MECHANICAL-ELECTRICAL & PLUMBING
A HANDBOOK FOR MEP ENGINEERS
Photograph-Dubai sports city : Source – www.dubaisportscity.com
By: Dr. S.L.Sharma, B.E (E), M.Phil, Ph.D.
Author Dr. Sanwar Lal Sharma B.E (Ele.), D.E (Ele), D.M&M B.A (Economics), M.A (Criminology), M.Phil (I.R) &Ph.D (H.R) A. Resident Engineer (MEP)
DIAR Consult Victory height Project- Dubai International sports city DUBAI-UAE
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PREFACE This tiny effort has been made in the direction to appreciate the importance of electro-mechanical and plumbing work in the construction industry. This will serve as a hand book with ready reckoned to all professionals engaged in the MEP work. It will also provide a ready made guidance to all contractors and sub contractors at site. This book clearly defines the roll and responsibility of each one involved in the execution of the project. It is observed in my long years of experience in the field that there is always a dispute within the agencies regarding administrative procedures to be followed. Keeping that thing in mind we tried to segregate all administrative obligations to be adhered by each agency. It is hoped that this small effort will bring a big change in the professionals’ approach engaged in the construction industry. Sincerely, Dr. S.L.Sharma Date: 10-09-2007
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Contents Preface
Pages 3
Reference Standards/documents
5-6
Project Co-ordination
7-11
MEP Organization
12-25
MEP staff Responsibilities
26-32
Inspection Methodology (Electrical) Inspection Methodology (Mechanical) Standards of submittals
33-56
Annexure (Templates)
86-105
Abbreviation
106-107
About Author
108
57-74 75-85
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REFERENCE STANDARD& DOCUMENTS
5
3- Source of Documents
The philosophy of the electro mechanical project management is drawn from ISO 9001 (2000) and British standards. However, every particular project is guided by its own project contract and supervised by quality manual. Main documents referred for smooth operation and implementation of quality standards of the project are : 1.ISO 9001( 2000) 2. BS standards 3.ASTM standards 4. ASHRE standards 5.IEE regulation 16 th edition (Electrical) 6. IP Standards. 7. Local authorities’ rules and regulations. 8. MEP Guide 9. Contractual documents(applicable to specific project) such as : (a) Specification manual (b) BOQ (c) Tender drawings (d) Fidic-2005
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PROJECT COORDINATION
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4- Co-ordination
4.1 The project co-ordination is the main operational and management tool to Execute the project smoothly and timely. Co-ordination among all agencies such as client, consultant, main contractor and other subcontractor are most essential to have proper reporting system to Over look and supervise all activities in progress at site. Generally the following chain is maintained: Client(Management)
Consultant
Main Contractor
All sub contractor
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4.2
Co-ordination between client and consultant
4.2.1 It is the main obligation of the consultant to appraise the progress of the Project to the client periodically. 4.2.2 Where Specified with in the tender documents or in contract documents, specific client reporting templates (formats) and coordination procedures will Be implemented. In other cases the formats published/distributed by Consultant will be utilized and followed. 4.2.3 Should client need any direct reporting on specific formats the same will be Distributed to all concern by consultant. 4.2.4 Generally all reporting to the client or his representative will be followed or routed through consultant. However client as the owner of the project can direct any agency involved in the project to submit specific reports. All agencies are requiring submitting the desired report to client under intimation to consultant if not directed to do so by the client.
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4.3 Coordination between consultant and main contractor 4.3.1 It is the main obligation and sole responsibility of the contractor to convert designed project in to a reality. 4.3.2 To fulfill this task the consultant becomes the main controller of the all project. 4.3.3 It is the sole responsibility of the consultant that all local and international norms including safety and environment protection are adhered and followed. 4.3.4 The quality standards are maintained as per designed specification laid down in the construction documents. 4.3.5 The consultant or his representative will act as main controller of the project. 4.3.6 The main contractor will keep a close association with the consultant. All drawing/material will be approved by engineer before putting them in use. 4.3.7 The contractor will invite engineer for all technical activities prior decided. 4.3.8 It is the duty of consultant to remove all project bottlenecks. 4.3.8 The contractor is obliged to bring a clear picture of all activities going on at the site by submitting periodic reports. 4.3.9 The contractor will use all specific reporting formats advised by consultant for all project activities. 4.3.10It is the sole responsibility of contractor to provide all infrastructure facilities for his and engineer’s staff. 4.3.11The contractor is to provide all method statement as per enclosed template.
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4.4 Co ordination between main contractor and sub contractor 4.4.1 All sub contractors will work under the supervision of main contractor. 4.4.2 All sub contractors are compulsorily registered with local government. 4.4.3 All submittals submitted by sub contractor should be routed through main contractor. 4.4.4 Main contractor should act as intermediate agency between consultant and sub contractor. 4.4.5 All the periodic report submitted by sub contractor should be forwarded to engineer by main contractor. 4.4.6 It is mandatory for main contractor to take the approval of all sub contractors engaged for project activities. 4.4.7 Main contractor is required to pass on all standard formats of engineer to sub contractor. 4.4.8 It is the sole authority of engineer to deal directly with any of the sub contractor wherever required or desired so by engineer.
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MEP ORGANIZATION
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Index
Page no.
5. 01
Introduction
14-14
5.02
Management and reporting scheme
14-15
5.03
MEP orgonogram
16-16
5.04
Key personnel’s Job descriptions
17-25
5.05
Department’s responsibilities and functions
26-26
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5.01 - INTRODUCTION Comply with local Government guide lines with clear defined responsibilities especially in the area of quality assurance, site management, testing &commissioning and finally handing over the completed project to the client.
5.02 - Management reporting scheme
MANAGING DIRECTOR
Director
Design manager Architecture
Design manager-Inte.
Head MEP
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Project REs
General Affairs
It is desired that the final goal of organization will be reached together with company’s growth and development of all functions. The function of general affairs include: Human Resources, Computer systems, Legal affairs, Public relations etc. However, targeted structure of Operational organization is outlined separately and not in the scope of this manual.
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5.03- (MEP) ORAGONOGRAM The MEP organization structure, which is a good transitional solution adequate to the current company’s size, needs and resources.
In this document organization of MEP Operations is outlined in details. It is based on the planned scope of activities with the expectation that desired goals will be reached. Consultant Managing Director
Resident Engineer
HEAD OF MEP Department
Assistant Resident Engineers MEP
Senior Mechanical Engineers
Senior Electrical Engineers
Mechanical Inspectors
Electrical Inspectors
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5.04 Key personnel’s Job descriptions 5.04.01- Head MEP Division HEAD MEP DEVISION
Job title: Job code: Job holder: Managing Director /RE
Reports to: First reports:
All MEP project heads from various projects
Job description:
This is key position for ensuring Proper design with quality & safety. Development and control of quality program, technologies, products and system evaluation and highest adherence of all local and international standards. SEE IN STAFF RESPONSIBILTIES Can hire or fire staff with the approval of MD Can suspend staff notifying MD Approves revenue items within budget Approves capital expenditure against budget Agrees and approves product changes. Recruitment and training of MEP staff. Re location and realignment of MEP staff as per project requirements. All Project heads All senior management All other personnel deem fit.
Responsibility: Authority:
internal Communication external Requirements:
Regulatory authorities Professional bodies Customers Suppliers Graduated in Mechanical / Electrical engineering. Minimum 15 years experience out of which 10 years in Middle East. UAE experience preferred. Leadership & Management abilities Excellent oral and written English
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In depth understanding of local government rules and requirement. Familiar with computers A postgraduate qualification would be an advantage Managing Director’s Review
Human Resources Review Employee’s review
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5.04.01 Assist. Resident Engineer Assist. Resident Engineer
Job title: Job code :( if any) Job holder:
Head MEP /RE
Reports to: First reports:
From mechanical engineer and electrical engineer of respective project. This is key position for ensuring Proper design with quality & safety. Development and control of quality system, technologies, products and system evaluation. Design of specification and product selection .Highest adherence of all local regulation and international standards. SEE IN STAFF RESPONSIBILITIES Can hire or fire staff with the approval of Head MEP Can suspend staff notifying Head MEP Agrees, recommend and approves product changes. Recruitment and training of MEP staff under intimation to MEP Head. Re location and realignment of MEP staff as per project requirements with in own responsibilities.
Job description:
Responsibility: Authority:
internal
Respective Project heads All senior management All other personnel deem fit.
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Communication external
Requirements:
Regulatory authorities Professional bodies Customers Suppliers
Graduated in Mechanical / Electrical engineering. Minimum 10 years experience out of which 05 years in Middle East. UAE experience preferred. Leadership & Management abilities Excellent oral and written English In depth understanding of local government rules and requirement. Familiar with computers A postgraduate qualification would be an advantage
Head of MEP ’s review Human resource review Employee’s Review
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5.04.03 Sr. Engineers/Engineers Sr. Engineers
Job title: Job code :( if any) Job holder:
ARE(MEP)/RE
Reports to: First reports:
From engineer/inspectors (electrical/Mechanical) of respective project.
Job description:
This is key position for ensuring implementation of design with quality & safety. Follow of quality program and system. Highest adherence of all local regulation and international standards.
Responsibility: Authority:
SEE IN STAFF RESPONCIBILTIES
internal Communication external
Requirements:
Agrees, recommend and approves product changes. Recruitment /interview recommendations. Training of MEP staff under intimation to MEP Head. Re location and realignment of MEP staff as per project requirements with in own responsibilities. Respective MEP head /Project heads Technical co-ordination with other departs. All other personnel deem fit under intimation to ARE –MEP Regulatory authorities Professional bodies Customers Suppliers
Graduated in Mechanical / Electrical engineering.
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Minimum 7 years experience out of which 03 years in Middle East. UAE experience preferred. Leadership & Management abilities Excellent oral and written English In depth understanding of local government rules and requirement. Familiar with computers A postgraduate qualification would be an advantage. Head of MEP ’s review Human resource review Employee’s Review
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5.04.04 - MEP Inspectors MEP Inspectors
Job title: Job code :( if any) Job holder: Sr. Engineer/ Engineer
Reports to: First reports:
Nil.
Job description:
This is key position for ensuring Implementation design with quality. Follow quality program. Highest adherence of all local regulation.
Responsibility: Authority:
SEE IN STAFF RESPONCIBILTIES Can recommend approval/suspension /rejection of inspection notifying sr. engineer/engineer. Recommend product changes. Training of MEP staff under guidance of MEP Head. Respective sr. engineers/MEP heads All other personnel deem fit guided by superiors.
internal
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Communication external
Requirements:
Regulatory authorities &Professional bodies notifying MEP head in the project.
Graduated in Mechanical / Electrical engineering. Minimum 3 years experience out of which 02 years in Middle East. UAE experience preferred. Or Technical diploma with 10 years relevant experience. Excellent oral and written English In depth understanding of local government rules and requirement. Familiar with computers desirable
Head of MEP ’s review Human resource review Employee’s Review
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5.05
Department’s responsibilities and functions
5.5.01 MEP department will work with civil engineering in a close coordination. 5.5.02 it is the main responsibility of the department to approve all drawings/material related to HVAC, Plumbing and electrical. 5.5.03 the department will carryout all schedule inspections requested by MEP contractor. 5.5.4 It is the obligation of the department to verify and approve the sub contractor For MEP work at site. 5.5.5 All services coordination under ground and other floors above ground is to be checked and approved by department. 5.5.6 MEP department (Electrical) will assist sub contractor in solving DEWA bottle necks. 5.5.7 MEP department (Mechanical) will assist sub contractor in solving the DM problems related to water and drainage. 5.5.8 MEP department will also support civil and main contractor to solve civil defense and fire fighting problems. 5.5.9 MEP department will scrutinize all the CVs of sub contractor and approve them as per listed specification. 5.5.10 MEP department will participate in all weekly progress meetings. 5.5.11 MEP department will also participate in all other meetings called by client and or his representative. 5.5.12 MEP department will coordinate with other infrastructure contractor working with the specified area. 5.5.12 MEP department will submit periodic reports to MEP head at head office. 5.5.13 MEP department will keep all the records of inspection, material submittal and drawing submittals. 5.5.14 Any other obligations not listed here but falls under the jurisdiction of the MEP Department.
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STAFF RESPONSIBILITIES
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Index
Page no.
6.1
Head of Department ( MEP)
29-29
6.2
Assistant Residence Engineer (MEP)
30-30
6.3
Senior Engineer(Electrical/ Mechanical)
31-32
6.4
Electrical/Mechanical Inspector
33-33
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6.1- Head of Department (H.O.D)-MEP Technical /Administrative Responsibilities: 6.1.1
Electro Mechanical (MEP) project management as per Dubai Govt. /International norms. 6.1.2 To review and approve material submittals reviewed & recommended by ARE/ Sr. engineer / Engineer. 6.1.3 To review and approve drawing submittals reviewed & recommended by ARE/ Sr.engineer / Engineer. 6.1.4 Participating in weekly project review meetings for tracking project progress & de-bottlenecking & implementation of procedures as per norms and Standards. 6.1.5 To authenticate monthly payment bill after reviewed and recommended by ARE/ Senior engineers. 6.1.6 Involve in strategic technical planning for achieving targeted schedules and Their implementation 6.1.7 Departmental reporting to management on periodic basis. 6.1.8 Final authorization & counter signing for all MEP activity. 6.1.8 To provide management guidance and leadership to MEP team members. 6.1.9 To review and forward all MEP variations applicable to all on going projects. 6.1.10 To review and counter sign all the MEP correspondences made with the Client, main Contractor or Sub-Contractors. 6.1.11 to review and approve all contractor claim & variation (related to MEP). 6.1.12 Institute change-management practices in the department, including restructuring & manpower rationalization initiatives, and facilitate acceptance by the staff across hierarchical levels. Formulate and benchmark functional best practices to focus on core MEP function. 6.1.13 Evolution of performance of contractors and other associated agencies 6.1.14 Oversee smooth implementation of manpower planning, recruitment, selection, induction, orientation and development of new employee, promotion in the department through Career and Succession Planning.
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6.2- Assistant Resident Engineers (ARE) – MEP Technical and Administrative responsibilities 6.2.1
To provide leadership and technical guidance to site MEP department at site. To handle all incoming and out going correspondence related to MEP. 6.2.2 To review the Design of all MEP services and bring any concern to the attention of H.O.D. 6.2.3 To ensure that DIAR Consult concept / procedures are strictly followed by all the MEP staff. 6.2.4 Electro Mechanical (MEP) project management at site as per Dubai Govt. /International norms 6.2.5 To review and approve the material submittals reviewed & recommended by Sr. engineer / Engineer. 6.2.6 To review and approve the Drawing submittals reviewed & recommended by Sr.engineer / Engineer. 6.2.7 Participating in weekly project review meetings for tracking site progress & de-bottlenecking & implementation of procedures as per norms and standards. 6.2.8 To ensure that the contractors / subcontractors are registered and obtained license from local authorities before commencement of the work at site. 6.2.9 To obtain approval of H.O.D on all material submittal. (if they are not specified) 6.2.10 To coordinate the MEP services with Civil / Architectural works. 6.2.11 To review the program of work submitted by the contractor and approve comments 6.2.12 To ensure that all testing and commissioning procedure are strictly followed by concerned all MEP staff. 6.2.13 To review, write and forward the performance appraisals to head of the department for all the staff working under him. 6.2.13 To prepare periodic reports for the Head of the department related to site progress and execution.
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6.3- Senior Engineers (Electrical/Mechanical) (SEE/SEM) Responsibilities 6.3.1
To check and review all the related material submittals documents and verify their conformity with the specification and Contract documents and forward to the MEP head. 6.3.2 To ensure that all the material submittals must be submitted as per standards listed in specification book. Such as: a. Submittal to have Main index list b.Submittal to have Specified material list c. Submittal to have Specification copy. d.Submittal to have Catalogue copy e. Submittal to have Data sheet i.e. to describe about the proposed Technical characteristics of the material and also to show the catalogue number of the proposed material. f. Submittal to have Compliance statement showing the exact comparison between specified and proposed material submittal and to be properly stamped and signed by the main Contractor and Supplier. g.Manufacturer/supplier address to be clearly shown on submittal form. 6.3.3 To advise sample approval of all related material before any installation in the site for MEP Head. 6.3.4 To check and review all the related shop drawing as per the contract, tender drawing and all addenda. To ensure that shop drawings are accurate and detailed and are fully coordinated with all other services. 6.3.5 To note and review all the changes or variations coming in drawings or BOQ (i.e. Quantity) during execution of the project. 6.3.6 To approve request for inspection for any Electrical/mechanical activity done at site. 6.3.7 To check the quality of work at site and insure that site execution is as per project specification and authorities regulations. 6.3.8 To check as per actual installation and forward the “As Built Drawings” received from contractor to head MEP. To attend weekly site coordination meetings.
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6.3.9 6.3.10 6.3.11 6.3.12 6.3.13 6.3.14 6.3.15
To guide and liaise with contractor/sub contractor for obtaining all approvals related to MEP from authorities. To make correspondence with the Client, Main Contractor Sub-Contractor under guidance of head MEP/ project RE. To provide guidance and supervision to related inspectors for site inspection work. To counter sign on all the inspection reports performed at site by inspectors. To report to immediate superiors all matters of non conformity and irregularities of executed works and to record such matters consistently and systematically in proper filing system. To accept full responsibilities of site supervision of electrical / mechanical works on project as assigned by management in a professional and competent manner. To work in full coordination with all members of staff at site / head office and subscribe to the over all procedures.
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6.4- Inspectors (Electrical/ Mechanical) (EI / MI) Responsibilities 6.4.1
To accept full responsibilities of site supervision of Electrical/mechanical Works executed at site. 6.4.2 To conduct inspections for all Electrical /mechanical works done at site as per inspection request submitted by contractor. 6.4.3 To supervise & improve the quality and quantity of Electrical / Mechanical installation at site 6.4.4 To check and be ensured at site that only approve material/drawing is (being) used. 6.4.5 To conduct and witness all types of electrical/mechanical site testing and commissioning and make written report to superiors at sites. 6.4.6 To conduct / check all the insulation resistance test, continuity test of LV cable Polarity test, earth resistance test, air balancing test, chilled water balancing test, pressure test, hydraulic test, units & equipment test etc. 6.4.7 To review the location and the installation levels for all Electrical/Mechanical equipments, panels, accessories etc at site.
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INSPECTION METHODOLOGY (ELECTRICAL)
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INSPECTION METHODOLOGY-(ELECTRICAL) INDEX 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8 7.9 7.10 7.11 7.12 7.13 7.14 7.15 7.16 7.17 7.18 7.19 7.20 7.21 7.22
Page No. L.V Panel Main Distribution Board (MDB) SUB Main Distribution Board (SMDB) Final Distribution Board (DB) Capacitor Bank Equipment Control Panel Isolators Electrical Manholes (EMH) Telephone Manholes (TMH) Light Fittings (Indoor Fittings, Wall Lights, & Emergency Lights) Light Switches & Power Switches Switched Sockets Standby Generator Set Transformer & Ring Main Unit (RMU) Equipment Earth Pits Neutral Earth Pits (EP) Fire Alarm System Voice Data Structured Cabling System Intruder Alarm System CCTV System Building Management & Control System Public Address & Music System MATV System Lightning Protection System
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35-36 36-37 38-38 39-40 40-41 41-41 42-42 42-43 43-44 45-45 46-46 47-48 48-48 49-49 49-50 51-51 52-52 52-53 53-54 54-55 56-56 56-56
7.1- (L.V). Main Distribution Boards MDB M.D.B should be checked & inspected as per approved material submittal and Listed specification. The below mentioned checks should be done by electrical inspector and verified by sr. engineer/engineer electrical. 7.1.1 MDB Should be from approved vendor as per approved material submittals IP grade , color and “form” of the panel to be confirmed as per approval. 7.1.2 Check and verify “Factory Test Certificate” from panel manufacturer. 7.1.3 MDB should be as per approved component and drawings. 7.1.4 Make and rating of the Circuit Breakers, meters (A&V), ELCBs etc. should be as per approved submittal. 7.1.5 Rating & Quantity of future space / spare feeders should be as per approvals. 7.1.6 Fault rating of the bus bar & circuit breaker should be as per approved drawings 7.1.7 Circuit Breaker settings verified / adjusted should be as per approved drawings 7.1.8 Bus Bar compartment should be fully shrouded and proper warning labels to be provided 7.1.9 MDB door gaskets, protective covers / shrouds should be fitted 7.1.10 MDB installation should be done properly & sufficient supports provided 7.1.11 Cable glanding, termination, cables supports & tagging should be proper and satisfactory. 7.1.12 MDB power cables, Cable glands and all components should be easily accessible 7.1.13 Cable tray and trunking in side the panel should be in installed properly with cove on. Earthing to the panel to be provided. 7.1.14 Earthing and equiv. potential bonding of MDB is done properly & size of earth cable should be as per drawing 7.1.15 MDB internal & external surfaces should be clean & all unused holes plugged 7.1.16 Insulation (Megering) resistance for MDB should be carried out at site and to be recorded 7.1.17 Insulation resistance for main & all feeder cables should be carried out and to be recorded 7.1.18 ATS operation (auto / manual) functional check should be carried out (if applicable) 7.1.19 Earth Leakage / fault teat should be carried out & should be satisfactory where ever applicable.
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7.1.20 KWh installation, type, C.T ratio and locations should be as per local govt. authority’s approval. 7.1.21 MDB main label with feeder description & Component identification labels should be provided 7.1.22 Laminated approved load schedules should be provided inside the MDB. 7.1.23 As-Built drawing from panel builder should be provided in drawing pocket in MDB.
7.2- SUB Main Distribution Board (SMDB) Should be checked & inspected as per specification & material submittal approval by the inspector & is to be cross checked by Engineer stated as follow. 7.2.1 7.2.2 7.2.3 7.2.4 7.2.5 7.2.6 7.2.7 7.2.8 7.2.9 7.2.10
SMDB Supplied From approved vendor should be as per approved material submittal. Factory test certificate from panel builder should be verified and values to be accepted. SMDB should be as per approved drawings, single line diagram and to be requirements. Rating & Quantity of the Circuit Breakers, meter etc. should be as per approved drawing. Rating & Quantity of future space / spare feeders should be as per approvals Fault rating of the bus bar & circuit breaker should be as per approved drawings. Circuit Breaker settings verified / adjusted should be as per approved drawings. Bus Bar Compartment should be fully shrouded and to be proper warning label provided. SMAB door gaskets, protective covers / shrouds should be fitted SMAD installation to be done properly & sufficient supports should be provided.
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7.2.11 7.2.12 7.2.13
7.2.14 7.2.15 7.2.16 7.2.17 7.2.18 7.2.19 7.2.2O 7.2.21 7.2.22 7.2.23
Cable glanding, termination, cables supports & tagging should be satisfactory. SMDB power cables, Cable glands and all components should be easily accessible. Cable tray and trunking should be installed properly, covers and earthing are to be provided.
Earth bonding of SMDB to be done properly & size of earth cable should be as per drawing. SMDB internal & external surfaces should be clean & all unused holes to be plugged. Installation resistance for SMDB should be carried out at site and to be recorded. Installation resistance for main & all feeder cables should be carried out and to be recorded. Functional Test for SMDB should be carried out and to be found satisfactory. Earth Leakage / fault teat should be carried out &to be found satisfactory (if applicable). Main Label, feeder description & Component identification labels should be provided. Laminated approved load schedules should be provided inside the SMDB As-Built drawing from panel builder should be provided in drawing pocket in SMDB. As-Built drawing from panel builder should be provided in drawing pocket in SMDB.
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7.3- Final Distribution Board (DB) D.B should be checked & inspected as per approved material submittal and listed specification. The below mentioned checks should be done by electrical inspector and verified by sr. engineer/engineer electrical. 7.3.1 DB Should be from approved vendor as per approved material submittals IP grade, color and “form” of the panel to be confirmed as per approval. 7.3.2 Check and verify “Factory Test Certificate” from panel manufacturer. 7.3.3 DB should be as per approved component and drawings. 7.3.4 Make and rating of the Circuit Breakers, meters (A&V), ELCBs etc. should be as per approved submittal. 7.3.5 Rating & Quantity of future space / spare feeders should be as per approvals. 7.3.6 Fault rating of the bus bar & circuit breaker should be as per approved drawings 7.3.7 Circuit Breaker settings verified / adjusted should be as per approved drawings 7.3.8 Bus Bar compartment should be fully shrouded and proper warning labels to be provided 7.3.9 DB door gaskets, protective covers / shrouds should be fitted 7.3.10 DB installation should be done properly & sufficient supports provided 7.3.11 Cable glanding, termination, cables supports & tagging should be proper and satisfactory. 7.3.12 DB power cables, Cable glands and all components should be easily accessible 7.3.13 Cable tray and trunking in side the panel should be in installed properly with cove on. Earthing to the panel to be provided. 7.3.14 Earthing and equiv. potential bonding of DB is done properly & size of earth cable should be as per drawing. 7.3.15 DB internal & external surfaces should be clean & all unused holes plugged. 7.3.16 Insulation (Megering) resistance for DB should be carried out at site and to be recorded 7.3.17 Insulation resistance for main & all feeder cables should be carried out and to be recorded 7.3.18 ATS operation (auto / manual) functional check should be carried out (if applicable) 7.3.19 Earth Leakage / fault teat should be carried out & should be satisfactory where ever applicable 7.3.20 DB main label with feeder description & Component identification labels should be provided 7.3.21 Laminated approved load schedules should be provided inside the DB. 7.3.22 As-Built drawing from panel builder should be provided in drawing pocket in MDB.
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7.4- Capacitor Bank Should be checked & inspected as per specification & material submittal approval by the inspector & is to be cross checked by Engineer stated as follow. 7.4.1 7.4.2 7.4.3 7.4.4 7.4.5 7.4.6
7.4.7 7.4.8 7.4.9 7.4.1O 7.4.11 7.4.12 7.4.13 7.4.14 7.4.15 7.4.16 7.4.17 7.4.18
Panel supplied from approved vendor should be as per approved material submittal. Factory Test Certificate from panel builder should be verified and values to be accepted. Panel should be as per approved drawings, load schedules and requirement. Rating of circuit breakers, fuses, capacitor should be as per approved drawing. Switching step of capacitor banks should be as per approved drawing. Fault rating of the bus bar & circuit breaker should be as per approved drawing.
Circuit breaker settings should be verified / adjusted should be as per approved drawing. Bus bar should be fully shrouded and proper warning label should be provided. Panel door gaskets, protective cover/ shrouds should be fitted. Air inlet filter, ventilation with thermostat should be provided. Panel installation should be done properly& sufficient support should be provided. Cable glanding, termination cable support & tagging should be satisfactory Panel power cables, cables glands and all components should be easily accessible. Cable tray and trunking installed properly, cover and earthing should be provided. Earth bonding of panel should be done properly & size of earth cable should be as per drawing. Panel external and internal surface should be clean and all unused holes should be plugged. Installation resistance of panel should be carried out at site & to be record. Installation resistance of main cable should be carried out and to be record.
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7.4.19 7.4.2O 7.4.21
Functional test for the capacitor panel carried out & should be found satisfactory Panel main tag and components identification should be by permanent labels As-built drawing from panel builder should be provided in a drawing pocket in panel.
7.5- Equipment Control Panel Equipment control panel should be checked & inspected as per approved material submittal and listed specification. The below mentioned checks should be done by electrical inspector and verified by sr. engineer /engineer electrical. 7.5.1 7.5.2 7.5.3 7.5.4 7.5.5 7.5.6 7.5.7 7.5.8 7.5.9 7.5.1O
Panel supplied should be from approved vendor and as per approved material submittal. Factory test certificate should be from panel builder to be verified and result to be accepted Control panel dimensions & arrangements should be as per the approved drawings Ratings and quantity of MCB / MCCB / ELCB should be as per approved drawings. Panel power and control wiring should be as per standard drawings and requirements. Rating of contactors / over load relays should be as per approved drawings. Permanent identification of all components inside the control panel should be marked. Wire sizes, color coding, terminations should be properly executed inside the panel. Panel gaskets, bus bar shrouding, protective cover & warning label should be provided. Installation of the panel should be done properly.
7.5.11
Cable size type, glanding, terminations, support & tagging should be satisfactory.
7.5.12 7.5.13
Panel cables, glands and all components should be accessible easily. Control wiring type & size, dressing, terminations and marking should be done properly. Panel internal & external surfaces should be clean & all unused holes should be plugged.
7.5.14
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7.5.15 7.5.16 7.5.17 7.5.18 7.5.19
Earthing of the equipment and panel should be done satisfactorily. Insulation resistance for power and control cables should be carried out and to be recorded. Test / commissioning of system in coordination with supplier should be done & to be certified. All functional checks and testing for circuits should be carried out & to be found satisfactory. Panel builder “As-built drawing” should provided inside the panel in drawing pocket
7.6- Isolators Equipment control panel should be checked & inspected as per approved material Submittal and listed specification. The below mentioned checks should be done by electrical inspector and verified by sr. engineer /engineer electrical. 7.6.1 7.6.2 7.6.3 7.6.4 7.6.5 7.6.6 7.6.7 7.6.8 7.6.9 7.6.1O 7.6.11 7.6.12 7.6.13 7.6.14 7.6.15
Isolators should be from approved vendor as per approved material submittal Mounting arrangement of isolator unit should be satisfactory (Recess / Surface). Isolator should be suitable for the location (check IP rating). Isolator duty ampere rating should be as per approved drawing and requirements. Isolator unit location should be satisfactory & easily accessible for operation Gasket (if any), protective cover / shrouds (if applicable) should be fitted. Isolator unit installation should be done properly & sufficient support to be provided. Power cable glanding, termination, cables support & tagging should be satisfactory. Installation of the concealed ducts for isolator cables should be satisfactory ( If applicable). Cable tray and trunking should be installed properly, covers should be provided. Earthing of the isolator should be done properly & and size of earth cable to be as per approved drawing. Isolator unit internal & external surface should be clean and unused holes plugged. Earth leakage teat should be carried out and to be found satisfactory ( If applicable) Isolator unit main tag provided should be as per equipment & drawings.
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7.7- Electrical Manholes (EMH) Should be checked by inspector as per shop drawing. Location, specification & size are to be checked. A co-ordination between electrical and civil is to be done as per following steps. 7.7.1 Manhole construction should be as per specification. 7.7.2 Manhole size and location should be as per approved drawing and requirement 7.7.3 Manhole inner finish should be smooth and coated with water proofing material 7.7.4 Ducts should be as per approved vendor and material submittal 7.7.5 Duct location, arrangement should be in the manholes are to be satisfactory. 7.7.6 Duct size should be such that it remains with 60% empty space after installing the cable/wire in it. 7.7.7 Spare ducts with pull wires should be installed for future use. 7.7.8 Duct ends should not be damaged and to be provided with end bell. 7.7.9 Ducts should be utilized evenly and spare space should be available in each ducts. 7.7.1O Cable installations and neatness inside the manholes should be satisfactory. 7.7.11 Sufficient cable loops should be provided in side the Manhole (where applicable). 7.7.12 All cable should be in the Manholes are to be identified by aluminum / stainless steel tags. 7.7.13 All ducts ends should be sealed with gasoline resistance compound. 7.7.14 Cover size should be same as manhole size & is water tight. 7.7.15 Cover should be oil-gasoline resistance gasket, greased, painted and to be tagged. 7.7.16 Cover should fit to the frame properly and no rattle cover after installation. 7.7.17 Manhole to have Arabic and English tagging, clarifying the manhole is for Electrical.
7.8- Telephone Man Holes (TMH) Should be checked by inspector as per shop drawing. Location, specification & size are to be checked. A co-ordination between electrical engineer and civil engineer is to be done as per following 7.8.1 7.8.2 7.8.3
Manhole construction should be as per specification. Manhole size and location should be as per approved drawing and requirement. Manhole inner finish should be smooth and to be coated with water proofing material
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7.8.4
Ducts should be as per approved material submittal.
7.8.5
Duct location, arrangement in the manholes should be satisfactory. Electrical wiring and telephone wiring should not be mixed. Duct size should be as per approved drawing and to be sufficient to install cables. Spare ducts with pull wires should be installed for future use. Duct ends should be not damaged and to be provided with end bell. Ducts should be utilized evenly and spare space to be available in each ducts Cable installations and neatness inside the manholes should be satisfactory.
7.8.6 7.8.7 7.8.8 7.8.9 7.8.10
7.8.11 7.8.12 7.8.13 7.8.14 7.8.15 7.8.16 7.8.17
Signal / Data cables inside Manhole should be installed in flexible conduits. Sufficient cable loops should be provided in side the Manhole (where applicable). All cable in the Manholes should be identified by aluminum / stainless steel tags. All ducts ends should be sealed with gasoline resistance compound. Cover size should be same as manhole size & is water tight. Cover should be oil-gasoline resistance gasket, greased, painted and to be tagged. Cover fit to the frame should be properly and should not rattle cover after installation.0.
7.9- Light Fittings (indoor fitting, Wall light & Emergency Lights) Installation is to be checked & inspected as per specification, approved drawings & Approved submittal by the inspector. Engineer has to ensured that the following procedure is strictly followed. 7.9.1 7.9.2 7.9.3 7.9.4 7.9.5 7.9.6
Light fitting should be as per material submittal Light fitting should be as per specification, approved drawing approved sample & requirement Lamp wattage & type (day light, etc) should be as per the drawing and specification. Light fitting should be suitable for location (IP rating, Mounting etc.) Light layout / location should be as per approved drawings. Installation of light fitting should be done properly.
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7.9.7 7.9.8 7.9.9 7.9.1O 7.9.11 7.9.12 7.9.13
7.9.14 7.9.15 7.9.16 7.9.17 7.9.18
Fitting and Ceiling rose / light point should be easily accessible and to be replaceable. Control Transformer (if any) should be install properly and to be easily accessible. wiring should be as per drawing (Plug in Ceiling rose, heat resistance cable, etc). Earth connection to the fittings should be done properly. Conduit sizes are adequate & should be as per the specification. Conduit installation to the ceiling roses / light points should be satisfactory. Conduits above false ceiling should be clamped adequately (others concealed).
Switch / Automatic controls, circuit wiring and wire sizes should be as per the drawing. Light fitting surface, trims and diffusers should be clean. They are to be free from dust and stains. Light fitting should be complete in all respects (annular glass/ emergency kit etc.). Light fitting and circuit wiring should be tested for functionality. Emergency light / kit should be tested for functionality.
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7.10- Light Switches & Power Switches Installation is to be checked & inspected as per specification, approved drawings & approved submittal by the inspector. Engineer should ensure that the following procedure is strictly followed. 7.10.1
Switches should be as per specification and approved make and should be strictly as per approved material submittal. 7.10.2 Switch rating, type, poles rocker design and gang should be as per the drawing & approved specification. 7.10.3 Location & mounting height of switch should be as per local authority rules and regulation as well as per approved drawings and IP rating should be as applicable. 7.10.4 Wiring and wire type, size, color coding etc. should be as per drawing and specification. 7.10.5 Installation and finishing around the switch should be aesthetically satisfactory 7.10.6 Phase barrier and warning labels should be provided (If applicable). 7.10.7 Power switches should be with light indicator. 7.10.8 Brushed / stainless steel front plate accessory should be provided (where specified). 7.10.9 Power switches should be with approved flex outlet / connection unit to be as per drawing. 7.10.1O Location, Installation & finishing around flex outlet / connect unit should be satisfactory. 7.10.11 Functional test should be carried out and should be satisfactory.
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7.11- Switched Sockets Installation is to be checked & inspected as per specification, approved drawings & approved submittal by the inspector. Engineer should ensure that the following procedure is strictly followed.
7.11.1
Sockets should be as per specification, make and as per approved material submittal & sample provided. 7.11.2 Sockets rating, type & gang should be as per the drawing & specification. 7.11.3 Location & mounting height of sockets should be as per local authority’s rule and regulation and as per specification / requirement reflected in approved drawings. 7.11.4 Back box installation and conduit arrangement / termination should be satisfactory. 7.11.5 Socket suitable for location (IP Ratings) and should be as per drawing. 7.11.6 Wiring(ring/ radial), wire type, size, color coding etc. should be as per drawing and standard. 7.11.7 Earth connection to the socket & earth loop to back box should be done properly and satisfactorily. 7.11.8 Sockets should be switched type with Sutter and to be red light indicator (If applicable). 7.11.9 Installation and finishing around the socket should be aesthetically satisfactory. 7.11.1O Installation and wiring should be skirting & trucnking / floor box should be satisfactory (if applicable). 7.11.11 Brushed / stainless steel front plate accessory should be provided (where specified). 7.11.12 Installation / Location of socket above false ceiling (if applicable) should be satisfactory. 7.11.13 Functional test should be carried out and should be mandatory satisfactory.
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7.12- Generator (As stand by power source) Installation is to be checked & inspected as per IEE rules, approved drawings & Engineer has to ensure that the following procedure is strictly followed. 7.12.1
Generator supplied should be from approved vendor /make and capacity is as per approved material submittal.
7.12.2
Factory test certificate from manufacturer should be verified and values to be accepted Generator set should be as per approved, specification and capacity.
7.12.3 7.12.4 7.12.5
Technical characteristics of generator should be as per drawing / specification. Installation of generator should be done as per local authority’s /IEE rules regulation & should be certified by generator dealer/supplier.
7.12.6
Linear vibration isolator & anti vibration pad should be provided and leveling of the machine should be checked by calibrated level indicator and expert engineer only. 7.12.7 Silencer and muffler should be provided. 7.12.8 Flame/ spark arrestor and rain cap at end of exhaust pipe should be provided. 7.12.9 Type, rating of batteries and battery charger & controls should be verified. 7.12.1O Fuel level gauge, Fuel low level alarm and shut down should be verified. 7.12.11 Double earthing of Engine-generator frame and single earthing for fuel tank should be done satisfactorily. Earthing should be with flat copper plate /copper wire and should be as per IEE rules. 7.12.12 Generator neutral earthing should be done and tested. Earthing (Resistance) value to be recorded periodically and during commissioning. The earthing value should be less then 01 OHM when measure between two earthing points separated six meters from each other. Body earthing point and neutral earthing should not be mixed together. 7.12.13 Generator panel metering, control & alarms should be as per the specification and to be verified. A mechanical and electrical isolation should be provided as safety between DEWA power and generator. 7.12.14 Power cable glanding, termination, cable support & tagging should be provided. 7.12.15 Cable tray & trunking should be installed properly; covers and earthing should be provided.
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7.12.16 7.12.17
Installation resistance for alternator (with - outgoing cable disconnected), and out going cables (in open end status) should be carried out and to be recorded. Startup and commissioning should be carried out by authorized person from dealer/supplier and all parameters are to be recorded such as frequency, voltage, RPM, engine oil pressure and fuel governor function.
7.13- Transformer & Ring Main Unit (RMU) The Responsible Engineer must Ensure that the installation of Transformer & Ring Main Unit is done as per the rule & regulations of electricity authority & should be checked as follows 7.13.1 7.13.2 7.13.3 7.13.4 7.13.5 7.13.6
7.13.7 7.13.8
Transformer & RMU supplied should be as per approval by Electricity authority. Transformer & RMU rating should be as per approved drawings and specification. Installation should be done satisfactory & approved by authority (if done by contractor) Power cable glanding, termination, cable support & tagging should be satisfactory. Covered cable tray and trucking should be installed properly. Proper /satisfactory Earthing should be provided. Installation resistance for transformer LV cables should be carried out (In open end status) and to be recorded.
Transformer & RMU body earthing should be satisfactory and as per authority / IEE regulation. Transformer neutral earthing should be satisfactory and as per authority regulation. Neutral and body earthing should not be mixed. The earthing resistance value when measured should be less 01 OHM.
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7.14- Equipment Earth pits / Neutral Earth pits (EP) Inspection is to be conducted as per the following procedure & should be cross checked by the responsible Engineer as follows 7.14.1 7.14.2 7.14.3 7.14.4 7.14.5 7.14.6 7.14.7
Earth pit construction should be as per specification. Earthing materials should be from approved make and to be as per approved submittal. Earth pit location should be as per approved drawing / requirement and should be satisfactory. Copper earth rod (size), cable clamps (material) and accessories (make) should be as per approved material submittal. Earth cable size should be as per approved drawing & standards. Earthing cable installation should be duct/conduit as applicable and to be satisfactory. Spacing between parallel rods should be as per specified in the drawing & should be more then length of rods. Earth termination in pit should be visible, accessible, greased, tape and to be shrouded. White grease (white jelly) to be used.
7.14.8 Back filling of earth pit should be done properly. 7.14.9 Pit should be cover fit flush with finish floor / tile level without any rattle. 7.14.10 Earth pit cover (for transformer / generator - neutral earth) should be marked by paint. Other earthing points should be given number if more then one earthing point exits and to be recorded for future reference. 7.14.11 Earth resistance test should be carried out, to be recorded and should be found with in limits ( 01 OHM).
7.15- Fire Alarm System The responsible Engineer must ensure that the following procedure is strictly followed and checked 7.15.1 7.15.2 7.15.3
Fire Alarm system supplied should be as per approved make and as per material submittal. Factory QC test certificate from supplier should be verified. Fire Alarm panel zone, alarm and indications should be as drawing / specification.
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7.15.4
Mounting arrangements and installation of fire alarm panel should be satisfactory. 7.15.5 Cable glanding, terminations, & tagging in the fire alarm panel should be satisfactory. 7.15.6 Fire alarm panel internal and external surface should be clean. 7.15.7 Cable for out door (XLPE armored) / in door (FP200) and correct size should be used. 7.15.8 Fire sensor terminal box / Cover (From approved manufacture) should be in white color. 7.15.9 Junction box location and ducts location should be as per drawing. 7.15.1O Cable glanding, terminations & tagging inside junction box should be satisfactory. 7.15.11 Fire alarm detectors, Break glass, and bell their numbers and location should be as per approved drawing / specifications. 7.15.12 Location of fire alarm devices should be as per drawing and requirement. 7.15.13 Bell and Break glass installed out door should be W/P type (where applicable). 7.15.14 Installation and wiring of fire alarm devices should be as per drawing / satisfactory. 7.15.15 Wires for devices installed should be in conduit and concealed (except above false ceiling). 7.15.16 7.15.17 7.15.18 7.15.19
Installation resistance for cables should be carried out and to be recorded. Test / Commissioning of system in co-ordination with supplier should be done & to be certified. The system should be connected through telephone line to local fire station where necessary and mandatory as per local rules. Functional test should be carried out, should be recorded and to be found satisfactory Engraved zone chart should be provided adjacent to fire alarm panel. Emergency telephone numbers of fire station should be written with bold letters on or near to fire alarm system/panel.
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7.16- Voice Data / Structured Cabling System The responsible Engineer must ensure that the following procedure is strictly followed and checked 7.16.1 7.16.2 7.16.3 7.16.4
Structured cabling system installation should be done by approved contractor by Etisalate or DU. Location, size and installation of Etisalat & intermediate DP should be satisfactory. Recessed cabinet for Etisalat & intermediate DP should be satisfactory Patch panel size, location and installation should be satisfactory.
7.16.5
Cable glanding, terminations & tagging to / in patch panel should be satisfactory. 7.16.6 Patch panel internal & external surface should be clean. 7.16.7 Cables for outdoor / indoor used should be correct and as per approved submittal. 7.16.8 Telephone junction box / cover (from approved manufacturer) should be in white color. 7.16.9 Junction box locations and ducts should be as per approved drawing. 7.16.10 Cable glanding / terminations & tagging inside junction box should be satisfactory. 7.16.11 Voice / Data socket & locations should be as per drawings / specification. Identification tags should be provided. 7.16.12 Front plate accessories and voice data sockets to be as per approved submittal. 7.16.13 Installation & wiring of voice data device should be as per drawings and satisfactory. 7.16.14 Wires for devices should install in conduit and concealed (except above false ceiling). 7.16.15 DOMS unit location, installation and wiring should be satisfactory. 7.16.17 Cables & other elements installed should be as per automation drawing / requirements. 7.16.18 Test / commissioning of system in co-ordination with supplier should be done & to be certified. 7.16.19 Functional tests should be carried out and recorded and to be found mandatory satisfactory. 7.16.2O Tank gauging cabling, JB and power / data socket provided should be as per drawings.
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7.17- Intruder Alarm System The responsible Engineer must ensure that the following procedure is strictly followed and checked 7.17.1 7.17.2 7.17.3 7.17.4 7.17.5
7.17.6 7.17.7 7.17.8 7.17.9 7.17.10 7.17.1
System should be supplied from approved vender and should be as per approved material submittal. Panel, keypad, sensor, LIM & motion detector location should be as per drawings. Panel and LIM above false ceiling should be easily accessible / replaceable. Ceiling mounted glass break sensors should cover the entire glass area. Cabling, terminations & tagging of intruder elements should be satisfactory.
Cable installed should be in conduits and concealed (except above false ceiling). Intruder alarm buzzer location should be as per drawing & outdoor use (If applicable). Intruder alarm programmed should be as per user requirement. Test / Commissioning of system in co-ordination with supplier should be done & to be certified and recorded. Functional test should be carried out and recorded and to be found mandatory satisfactory. Engraved zone chart for intruder system should provide adjacent to key pad.
7.18- CCTV System The responsible Engineer must ensure that the following procedure is strictly followed and checked 7.18.1 7.18.2 7.18.3 7.18.4 7.18.5
System should be supplied from approved vendor & should be as per approved material submittal Cameras, monitors, switching & recording, modem locations should be as per drawings. Poles specification & installation should be as per approved drawings / user requirement. Cameras should be PTZ type and monitor is 17” size minimum (color monitor). Camera installation should be per approved drawing and to be easily accessible. 52
7.18.6 7.18.7 7.18.8
7.18.09 7.18.10 7.18.11 7.18.12 7.18.13 7.18.13
Ceiling mounted and pole mounted cameras should installed properly. System cable installation, termination & tagging should be satisfactory. Power cable installation, termination and tagging for cameras should be satisfactory.
Installation of monitors and switching devices should be satisfactory and as per user requirement. CCTV system should be programmed as per requirement & specification. Software integration should be satisfactory. Camera resolutions and picture quality on the monitor should Be satisfactory. Test / Commissioning of system should be coordination with supplier done & to be certified. Functional tests should be carried out, should be recorded and to be found satisfactory.
7.19- Building Management and Control System Installation is to be done in co-ordination with the supplier. The installation is to be Inspected & checked using the following procedure which is to be confirmed by the responsible Engineer 7.19.01 All wiring and tubing should be properly supported and run in a neat and workmanship manner. 7.19.02 All wiring and tubing exposed and in equipment rooms should run parallel to or at right angles to the building structure. 7.19.03 All piping and wiring with in enclosures should be neatly bundled and to be enclosed to prevent obstruction to devices and terminals. 7.19.03 Soft copy of Master computer programs and data files is to be preserved. (Including all control programs, initial approved parameters, settings, English descriptors, and color graphics complete with dynamic dispersed data) 7.19.04 Diskette should be copied and preserved and to be used/reloaded in cash of system crash and memory failure. 7.19.05 Should be completely checked for calibration test of all connected hardware and software to be insure that the system performs in accordance with the approved specification and sequences of operation submitted.
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7.19.06
All instruments, switches, sensors, transmitters etc. should be suitably wired and mounted. They are to be protect them from vibration, moisture, mechanical damages and temperature variations. 7.19.07 All equipment and panels should be identified, with permanently mounted tags. 7.19.08 Auxiliary pilot duty relays on all starters is require for control function. 7.19.09 All wiring should be as recommended by system supplier and manufacturer. All communication cables/wire should be of low impedance type and should be screened type. 7.20.10 All blower motors for AHUs connected to BMS system should be speed controlled with frequency control device. 7.21.11 if system is monitored and controlled type then it should be connected to PC as specified and directed by user. 7.19.12 Functional test should be carried out and to be found satisfactory.
7.20- Public Address and Music System The responsible Engineer must ensure that the following procedure is strictly followed and checked. 7.20.1 7.20.2 7.20.3
7.20.4 7.20.5 7.20.6
System supplied should be from approved vendor and make and as per approved material submittal. Speakers for public address and music system location should be as per approved drawing. Public address system cabinet and control installation should be as per approved drawing / requirement.
Radio Channel, VCD Channel, Tape channel, provided should be as per approved drawing / requirement. Zoning of each area to be required by the detail design as indicated in the single line diagram. PA system interlinked with the fire alarm system and provision for automatic broad cost of emergency evacuation message should be satisfactory and requirement.
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7.20.7
Sound pressure level (SPL) and distribution for the various area should be satisfactory. 7.20.8 Paging microphone mounted on a table desk with illuminated push buttons for selective paging of different zone should be satisfactory. 7.20.9 Test / Commissioning of system in co-ordination with supplier should be done and to be certified 7.20.1O Functional test to be carried out, should be recorded and to be found satisfactory.
7.21- MATV System The responsible Engineer must ensure that the following procedure is strictly followed and checked. 7.21.1 7.21.2 7.21.3 7.21.4 7.21.5
7.21.6 7.21.7
System should be supplied from approved vendor/make and as per approved material submittal MATV system (head end station, Disheartens, Amplifier, Junction Boxes) etc. location should be as per drawing. Numbers of satellite dishes complete with their feed horn and LNB selection of channels should be as per approved drawing / requirement. Number of Antennas with their mast for AM/FM reception channels should be as per approved drawing / requirement. Head end station which houses all amplifier, receiver, modulator, invertors, , power supply units character generators etc. for a minimum of 40 numbers digital channels and in house audio, video and information channels should be as per requirement and to be satisfactory. All necessary splitter boxes, line amplifies, cabling, conduits, cable trays, TV, FM outlets etc. location should be as per drawing. Provision to connect the MATV system at the head end station to a minimum 10 more channel in future should be provided.
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7.21.8
Splitters and tap-off boxes used with in system for distributing the signal to the outlet sockets have a minimum frequency range of 0.15 MHZ up to 2050 MHZ should be as per requirement and to be satisfactory.
7.21.9
Test / Commissioning of system in co-ordination with supplier should be done satisfactorily and to be certified. 7.21.1O Functional test should be carried out , to be recorded and should found satisfactory
7.22- Lightning Protection System The responsible Engineer must ensure that the following procedure is strictly followed and checked 7.22.1 7.22.2 7.22.3
7.22.5 7.22.6 7.22.7 7.22.8
System supplied should be from approved vendor/make and as per approved material submittal. Lightning system location should be as per drawing.( at the highest point of the building) Air terminal networks, down conductors, earthing network, equiv. potential bonding of all metal works, all related accessories, thermo weld joints and terminations and connections should be satisfactory Protection of all electronic equipment with in the building against the transient over voltage caused by lightning should be provided. Sufficient number of rods, resistance to earth not exceeding 10 ohm is satisfactory. Direct paths from air terminals to ground earth connections should be done. Avoid sharp bends & narrow loops. Testing / Commissioning of system in co-ordination with supplier should be done and certified.
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INSPECTION METHODOLOGY (MECHANICAL)
57
8- INSPECTION METHODOLOGY-(MECHANICAL)
INDEX 8.1 8.2 8.3 8.4 8.5 8.6 8.7 8.8 8.9 8.10 8.11 8.12 8.13 8.14 8.15 8.16 8.17 8.18 8.19 8.20 8.21 8.22 8.23
Page No. Piping Installations Sleeves & Escutcheon Access Panels & Accessibility Protection Identification Vibration Control Mechanical Insulation Valves Drainage Specialties Fire Fighting System Fire Pumps Plumbing Pumps Chilled Water Pumps Chilled Water Piping Chillers Air Handling Unit. Fan Coil Units Duct Work Air Outlets Air Filtration Coordination / Roof Works External Services Testing & Commissioning
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59 60 60 60 60 61 61 61 62 62 63 63 64 64-65 65-66 66 67 67 68 68 69-70 70 71-74
8.1- Piping Installation 8.1.1 Where possible, store pipe and tube inside and protected from weather 8.1.2 All piping under buildings and roads shall be encased in concrete with 150 mm cover on all sides 8.1.3 Provide thrust blocks for buried water mains, at every change in direction of the pipe 8.1.4 Provide expansion joints for all piping at building expansion joints 8.1.5 All horizontal drainage piping for sizes Ø100mm and above shall be installed with 1 % minimum slope unless otherwise indicated and 2% for sizes less than Ø100mm 8.1.6 All pipe work shall be tested hydraulically to a pressure equal to twice the working pressure. If the working pressure is greater than 600 kPa the test pressure may be one and a half times the working pressure 8.1.7 Install air vents at all high points where air may collect and not be carried by The system 8.1.8 Arrange and install piping to obtain maximum head room, avoiding structural interference 8.1.9 Install piping parallel to building walls 8.1.10 Pipes transporting hot fluids shall be installed at least 6" (150 mm) away from pipes transporting cold fluids 8.1.11 Electrical conduits shall not touch or be supported on pipe 8.1.12 Protect the open ends by using temporary plugs or caps. 8.1.13 All reductions in pipe size shall be made by using reducing fittings 8.1.14 Provide flanged or union connections for ready disconnection of piping at equipment 8.1.15 Provide drip pans below all water, or drain piping, if any, located in electrical rooms and transformer rooms 8.1.16 All piping work in finished areas shall be concealed in ceiling spaces and shafts or chased into walls. 8.1.17 Cover all temporary openings n ducts and pipes with polyethylene sheets or caps until final connection is made.
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8.2- Sleeves and Escutcheon 8.2.1 Escutcheons shall be provided at all penetrations of piping into finished areas. 8.2.2 Pipes, ducts and conduits shall have sleeves where they pass through walls, floors, ceilings and partitions, with minimum 12 mm clearance
8.3- Access Panels & Accessibility 8.3.1 All parts of the installation requiring periodic maintenance shall be accessible and provided with access panel
8.4- Protection 8.4.1 Fixtures and equipment shall be properly protected from damage during the construction period 8.4.2 All equipment shall be thoroughly cleaned before start-up and again before handover.
8.5- Identification 8.5.1 8.5.2 8.5.3 8.5.4 8.5.5
All piping and ductwork shall be marked in English to show the service and direction of flow. Marking shall be placed at 10 m intervals on all exposed piping and ductwork and at each access panel or door. All the equipments shall have a manufacturer’s name plate which shall show full details as manufacturer's name, unit and unit motors serial numbers, model numbers, date of manufacture and BS or other number. All the equipments should be identified by name. The schedules and schematic diagrams of all the systems shall be framed and glazed and hung in the relevant plant rooms.
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8.6- Vibration Control 8.6.1 8.6.2 8.6.3 8.6.4 8.6.5
All equipments to be adequately isolated to maintain acceptable noise levels in the occupied areas of the building Vibration isolators to be selected in accordance with the type of construction and the vibration/ noise generated by the selected equipment. If required, approved Acoustic Consultant to ensure and implement Appropriate noise and vibration control systems and elements Vibration isolation hangers should be installed with the spring as close to the ceiling as possible Where ductwork passes through a wall or floor, other than when a fire damper is required, pack around the duct using a fire resistant material to ensure a sound and air-tight joint
8.7- Mechanical Insulation 8.7.1 8.7.2 8.7.3 8.7.4
All the insulations stored at site should be protected from dirt and moisture by Adopting proper storing procedure. Fungicidal protective coatings shall be applied over external surfaces of chilled water pipes and interior and exterior surfaces of ductwork. All the pipe and ductwork exposed externally to the building, installed on roof is to be insulated and clad with aluminum. Diesel engine exhaust pipe and muffler shall be insulated.
8.8- Valves 8.8.1 8.8.2 8.8.3 8.8.4 8.8.5 8.8.6 8.8.7
Provide valves at inlet and outlet of equipment to isolate from the system for ease of maintenance. Do not support weight of piping system on valve ends. Install all valves with the stem in the upright position keeping aero marking towards direction of liquid flow. Prior to flushing of piping systems, place all valves in the full-open position. Provide drain valves at low points of piping systems. Install shut-off (NRV) valves at all equipment and at each branch take-off from mains. All equipment inlet piping should be connected through “V” mess filter installation.
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8.9- Drainage Specialties 8.9.1 8.9.2 8.9.3 8.9.4 8.9.5 8.9.6 8.9.7
All roof and floor drains shall be installed with water proof membrane extended up to and within the drain and flashed to prevent any water penetration through the drain. Make sure that only approved drains as per material submittal is only used. Co- ordinate with civil engineer for roof floor sloop. The sloop should lead to drain point from all direction. Floor drains should be located at the center of the floor tiles. Position roof drains and floor drains for easy access and maintenance. Co- ordinate with civil and make sure that sloop of the floor is such that it gives easy flow of water to drain. Grates of drains are to flush with finish floor level. Clean outs shall be installed at change of direction of drainage pipes.
8.10- Fire Fighting System 8.10.1 Run all piping as straight as possible There should be minimum possible bend to avoid dropping of water pressure/head. 8.10.2 Where piping is embedded in masonry or concrete, provide protective sleeve Covering. 8.10.3 System drain point to be provided at the lowest level of piping.8.10.4 Ensure that all the fire protection piping system shall be tested hydrostatically 8.10.5 Motorized /manual (as applicable) fire dampers should be installed in all ductwork crossing fire walls. 8.10.6 Fire dampers will be included in return and extract ductwork at each fire zone crossing. 8.10.7 While approving the sprinkler system shop drawings, ensure that it is well Co-ordinate with reflected ceiling plan. 8.10.8 All fire hydrant piping should be painted with florescent red paint. 8.10.9 All fire hydrant piping should be aero marked for the flow of water. 8.10.10 No valves are allowed to be installed in the piping. 8.10.11 Insure for battery’s make capacity and battery recharger in the system. 8.10.12 Functional test of the jet and spray at the end of hose to be done and ensure no leakage. 8.10.13 Hose real box is to be marked with “FIRE HOSE REAL”. The hose real box should not be locked. 8.10.14 Water level indicator should be installed in fire tank. 8.10.15 System should be commissioned by authorized person from supplier before presenting the system to civil defense and to be recorded.
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8.11- Fire Pumps 8.11.1 Contractor to submit full hydraulic calculations based on shop drawings to verify actual flow and head operating conditions. 8.11.2 Examine areas, equipment foundations, and conditions with installer present for compliance with requirements for installation and other conditions affecting pump performance 8.11.3 Check the alignment of pump and driver shafts after complete unit has been leveled on foundation. 8.11.4 All systems shall be field tested and run on load, with all automatic controls in operation and all circuits balanced to produce design conditions. 8.11.5 Contractor shall arrange the system manufacturer or factory trained representative to conduct on-site training for Client’s personnel. 8.11.6 Maintenance manual and operational manual to submitted by supplier. 8.11.7 Check for battery make, capacity and in built charger in the control panel. 8.11.8 Testing and commission procedure to be recorded.
8.12- Plumbing Pumps 8.12.1 Contractor to submit full hydraulic calculations based on shop drawings to verify actual flow and head operating conditions. 8.12.2 Contractor to submit the Civil Defense approval copy for proposed make of pumps and its supplier, together with the material submittal. 8.12.3 Examine areas, equipment foundations, and conditions with installer present for compliance with requirements for installation and other conditions affecting pump performance. 8.12.4 Check the alignment of pump and driver shafts ( If applicable)after complete 8.12.5 unit has been leveled on foundation. In cash of mono block check for pump level only. 8.12.6 All systems shall be field tested and run on load, with all automatic controls in operation and all circuits balanced to produce design conditions. 8.12.7 Contractor shall arrange the system manufacturer or factory trained Representative conduct on-site training for Client’s personnel.
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8.13- Chilled water pumps 8.13.1
While approving pumps, full hydraulic calculations and head of the pump to be verified in accordance with approved shop drawings. 8.13.2 Examine areas, equipment foundations, and conditions with installer present for compliance with requirements for installation and other conditions affecting pump performance. 8.13.3 Check the alignment of pump and driver shafts after complete unit has been leveled on foundation. 8.13.4 All systems shall be field tested and run on load, with all automatic controls in
8.13.5
operation and all circuits balanced to produce design conditions. Insulation on inlet and outlet is to be made as per specification to avoid condensing at the pipes.
8.14- Chilled water piping 8.14.1 Provide automatic air eliminators at all high points on piping mains for chilled water system 8.14.2 Arrange all piping to prevent interference with other services and to achieve a neat satisfactory workmanship installation. 8.14.3 Provide adequate allowance for expansion and contraction of piping by providing expansion joints. 8.14.4 Install drain valves at lowest points for draining the system . The drainage 8.14.5 point to be located at easy to operate location. 8.14.5 Arrange piping to permit ease of equipment removal. 8.14.6 Install all valves in equipment rooms in accessible locations from the floor. 8.14.7 All valves should be of raised flange end type. Use Teflon gasket only for flange joints. 8.14.8 Valve should be checked for its proper installation as per aero pointing towards flow. 8.14.9 Mostly ball valve with working parts made of SS or Butter fly valve is to used in the chilled water piping system.
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8.14.10 8.14.11 8.14.12 8.14.13 8.14.14
All valves are to be insulated as per specification. All chilled water pipes should be of ASTM grade seam less class “C”. Where required used long bend only. Avoid installing half bend. All welding are to be done after making “V” at the pipe end. After installation do the pressure testing of the piping before insulation. Pressure should be double then working pressure for 10-15 holding at pressure gauge. 8.14.15 Apply zinc oxide paint followed by insulation as per specification and thickness. Make sure that there are no air pockets in the insulation. 8.14.16 Apply aluminum cladding after insulation. Mark aero at intermediate places for flow of the liquid in side the pipes. 8.14.17 Before commissioning the system clean the piping with cleaning procedure.
8.15- Chillers 8.15.1 Connect inlet and outlet water piping to the chillers with flange joints. 8.15.2 Provide gate valves in piping upstream and downstream of the evaporator water boxes for isolating shells for maintenance. 8.15.3 Provide globe valve/balancing valve in out let line for pressure balancing and trim system. 8.15.4 8.15.5 8.15.6 8.15.7 8.15.8 8.15.9
Provide vapour proof flow switches in the chilled water piping properly interlocked to ensure that units can operate only when the flow is established. Provide wells and taps for thermometers sensors and pressure gauges in chilled piping adjacent to inlet and outlet connections of evaporators. Provide drain valves to each water box. Provide vent cocks to each water box. Provide valves, pressure gauges, temperature gauges and all accessories as shown in the details on the drawings. Provide certified wiring schematics to the electrical division for chillers, associated equipment and controls. Provide necessary wiring for control items, such as flow switches, temperature sensors etc., as recommended by the manufacturer.
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8.15.10 Provide necessary power wiring from starter to chillers control panel, control power transformer as required, purge motor, oil pump motor, oil heater, motor protection system, etc. as recommended by the chillers supplier 8.15.11 The manufacturer shall furnish a factory trained service engineer to supervise installation, field testing, and initial start-up of each chillers. 8.15.12 The manufacturer shall also allow for a one-week training program of client’s personnel to provide thorough understanding of supplied equipment, and full awareness of the daily checks and preventive maintenance procedures. 8.15.13 Submit maintenance and operational manual.
8.16- Air Handling Unit 8.16.1 8.16.2 8.16.3 8.16.4 8.16.5 8.16.6
8.16.7
Check material as per approved material submittal and install as shown on the drawings and according to AHU manufacturer's installation instructions. Install units at appropriately made foundation above floor to insure proper condensate trap depth and condensate drainage piping. Check for proper installation of filters and their specification. Check for filter integrity by using proper testing method. Install air handling unit to provide for adequate service access. Co-ordinate location to ensure air handling unit does not infringe upon access or service clearances of other equipment. Lubricate fan bearings. Verify fan isolators have proper deflection. Check the cleanliness of equipment. Check for blower leveling. Check for belt tension. There should be 5% slip in the belt. Upon completion of installation of air handling units, start-up and operate equipment to demonstrate capability and compliance with requirements. Field correct malfunctioning components then re-test to demonstrate compliance. Furnish one spare set of fan drive belts per fan for each AHU.
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8.17- Fan Coil Units 8.17.1 Install and level the fan coil properly. Location of the fan coil should be as per approved drawing. 8.17.2 At the time of “testing and commissioning” all the “throw away” filters shall be replaced by permanent washable filters for each fan coil unit. 8.17.3 Ensure that units are installed in such a way that all condensate from the drain pan flows freely 8.17.4 The actual location of thermostats should be decided at site coordinating with Arch. finishing details however the general location of the thermostat should be close to return duct in cash of ductable unit or it should be on the farthest corner in cash of unit installed in the room. 8.17.5 All FCU with duct should be installed with flex joints to avoid vibration isolation. 8.17. 6 Check for proper electrical wiring and speed controls wirings. 8.18.7 While commissioning check for current drawn and CFM of the machine.
8.18- Ductwork 8.18.1 Insure ducts are manufactured with proper material and thickness as per approved material submittal. 8.18.2 Insure ducts are manufactured and installed as per approved drawings. The routing of duct is proper and as per approved drawings. 8.18.3 Insure all elbow has inside radius equal to the depth of the main duct. 8.18.4 Provide access ports at convenient locations in all main ducts and main branch Takeoffs with airtight covers and extension sleeves through insulation to allow Air meter readings 8.18.5 Paint visible internal surface behind each grille or register flat black. 8.18.6 Provide temporary capping of ductwork to prevent entry of foreign material during construction. 8.17.6 Clean duct systems with high power vacuum machines. 8.17.7 Carry out light test of each branch of the duct to insure no leakage in the system. All joints should be leak proof. 8.17.8 Any leak detected to be blinded with silicon pest.
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8.19- Air Outlets 8.19.1 Verify inlet/outlet locations. 8.19.2 Verify the size of air terminals to achieve proper air pattern. 8.19.3 Verify ceiling and wall systems are ready for installation. 8.19.4 Ensure the noise generated by air terminals is within the permissible range. 8.19.5 Areas requiring no dirty extract will be pressurized by returning approximately 10% less air than that supplied. such as corridors etc. 8.19.6 Areas requiring dirty extract, will be maintained under negative pressure by extracting volumes at 110% of the supply volume. Such as kitchen and washrooms.
8.20- Air Filtration 8.20.1 8.20.2 8.20.3 8.20.4 8.20.5 8.20.6
Access doors shall be provided for maintenance and renewal of filter elements and related items. Where air handling equipment is to be used for temporary heating or ventilation of a facility, do not operate the equipment until specified filter media has been installed Where air handling apparatus is used during the construction period, install new filter media prior to start of air balancing. All filters to be checked for integrity and proper fitting. A proper cleaning procedure is to be place for cleaning of all washable filters. Air pressure or water pressure is only to be applied /used during the filter cleaning from the opposite side of the flow of air in the installation.
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8.21- Coordination / Roof Works 8.21.1 8.21.2 8.21.3
8.21.4
8.21.4
Ensure that Contractor has obtained approval for roof coordination drawing for MEP services, prior to the commencement of work. While approving the AC units and other equipments in the roof area, its height should be checked against the parapet height and ensure that none of the units and equipments are visible from outside. While approving the shop drawings for roof mechanical services like chilled water piping, AC and Ventilation ducting, water tanks, water supply piping, LPG tank and its piping, etc., ensure that none of the services are visible from outside. While approving the roof MEP services coordination layout the following details should be checked. Drawing scale should be bigger enough to review all the details All the details shown in the drawing should be of the same scale. Ensure that all the details shown in the approved individual services shop drawings are included in the coordination layout. Mechanical equipments, chilled water piping, AC and ventilation ducting, water supply piping, etc installation location and routing should be well studied and ensure that it occupies minimum possible roof area and are not making hindrance to the roof access. Wherever the services are crossing one over another, it’s cross sectional details should be studied Number of directional changes of chilled water piping and ducting to be kept as minimum as possible. The drawing should be finally checked and signed by Project Manager/ Architect with ‘No Objection’ status from Civil/Architectural works for the approved details in the drawing While approving AC and Ventilation roof shop drawings, Air discharge from the exhaust fans and AC equipments should be checked and ensure that: Hot air discharge from the equipments is not making any closed loop circuit with air suction of other nearby equipments Air discharge is not directed towards the parapet wall or minimum required distance is maintained between the parapet wall and air stream. Mechanical services shaft (OTS) size to be checked against the number of services entry like AC &Ventilation ducting, chilled water piping, drainage and storm water piping, water supply piping, etc. Ensure that all the referred services can be accommodated with required clearances. Ensure that AC drain from the roof equipments are terminated to the nearest Ground floor gully traps via separate piping. Do not discharging to the roof rainwater outlet with free discharge in ground floor. If the AC ducting and chilled water piping insulation and cladding are completed during the execution of project, ensure that all of them are well protected against any damages from the civil work or other mechanical damages.
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8.21.5 8.21.6 8.21.7 8.21.8
Vent pipes, exhaust hoods or other mechanical equipment mounted on roof, or housing for such equipment, shall not be closer to the edge of roof than a distance equal to the height of the pipe, hood or equipment Ensure that all the equipments can be installed in the available space of roof or equipments room and that there is adequate access to all equipments for easy maintenance. The coordination drawings must be comprehensive showing all details, dimensions, equipment, supports for all services and sections through critical areas. The contractor shall employ an approved Acoustic Consultant to ensure and implement appropriate noise and vibration control systems and elements (If Applicable).
8.22 - External Services 8.22.1 8.22.2 8.22.3 8.22.4 8.22.5 8.22.6 8.22.7 8.22.8 8.22.9 8.22.10 8.22.11 8.22.12 8.22.13
Ensure that Contractor has obtained approval for MEP services external coordination drawing, prior to the commencement of work. The coordination drawings must be comprehensive showing all details, dimensions, equipment, supports for services and sections through critical areas to properly coordinate all services and work of other trades The location of all the externally visible MEP services like manholes, gully traps, trenches, etc. should be well coordinated with external finishes. While approving the MEP services external coordination layout the following details should be checked: Drawing scale should be bigger enough to review all the details. All the details shown the drawing should be in same scale. Ensure that all the details shown in the approved individual services shop drawings are included in the coordination layout. Wherever the services are crossing one over another, its cross sectional details should be studied. Ensure that all the underground services are shown with exact invert level with reference to the bench mark level / external finish level. Ensure that all the manholes, gully traps, valve chamber, etc. are kept away from the walkway areas (If Applicable) Number of directional changes of piping and ducting to be minimum as Possible The drawing should be finally checked and signed by Project Manager/ Architect with ‘No Objection’ status from Civil/Architectural works for the approved details in the drawing Contractor shall take 'as-built' measurements for all the underground services, including all depths, distance from reference point, etc. details prior to commencement of backfilling operations.
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8.23 - Testing & Commissioning 8.23.1 The following approval should be obtained by the Contractor before testing and commissioning: Method Statements for testing and commissioning. Testing form for all tests. List of testing tools. Calibration certificate for testing tools. TESTING 8.23.2 The Contractor shall include for the cost of all tests, necessary instruments, plant, supervision and labour both at works and on site. The accuracy of the test instruments shall be demonstrated where so directed by the engineer. 8.23.3 The site test shall be of at least six hours duration. On large installation the site test may last several days and shall be long enough to allow the taking of all the measurements required in subsequent clauses of this section and to demonstrate the performance of the installation. Any defects in workmanship, materials and performance, maladjustments or other irregularities which become apparent during the tests shall be rectified by the contractor at his expense and the tests shall be repeated at the contractor's expense to the satisfaction of the engineer. 8.23.4 The Contractor's representative present at the site tests shall be fully conversant with the operation of the thermostatic controls, the control panel and the refrigeration system. In addition representatives of the manufacturer/supplier of the equipment shall be present. 8.23.5 Test pressure for water systems shall be 1 1/2 times working pressure. repair any leaks or defects and repeat the tests to the satisfaction of the engineer . 8.23.6 Test for leakage in all ductwork between air handling units and outlets. Seal ducts at all equipment connections and pressurize with a small blower. Leakage shall not exceed 5% of total designed air volume of the system at the maximum design working pressure. In addition seal any leaks causing noise. Test system as a whole or in parts provided all ductwork is accessible for inspection at the time of test. Provide blower, and all test equipment for inspection to the engineer.
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Commissioning 8.23.7 Each installation shall be fully commissioned. Commissioning shall include the balancing and regulation of air and water distribution systems and the final adjustment of control systems. 8.23.8 Particular attention shall be paid to: a) The maintenance of cleanliness of all plant and distribution systems during construction and ensuring that distribution systems are cleaned thoroughly as part of the commissioning b) The protection of plant, particularly to the sensitive or fragile items, from the activities of other trades during construction and from dirt and mal-operation during commissioning. c) The protection of electrical equipment from moisture during construction and commissioning. 8.23.09
The Contractor shall be responsible for fully commissioning each installation. All aspects of the commissioning procedure shall follow the recommendations in the relevant CIBSE Commissioning Codes and ASHRAE.
8.23.10
Commissioning shall include: a) Preliminary checks to ensure that all systems and system components are in a satisfactory and safe condition before start up. b) Preliminary adjustment and setting of all plant and equipment consistent with eventual design performance. c) Energizing and setting to work all plant. d) Final regulation and demonstration that the installation delivers the correct rate of flow of fluids at the conditions specified in the contract documents. e) Tolerance: i) Supply, return and exhaust fans: (+5) to (+10) percent of design flow. ii) Air outlets and inlets: (0) to (-10) percent of design flow. iii) Cooling water flow rate: (0) to (-5) percent of design flow. iv) Noise: +2 dBA at any point of one meter from grilles, registers and terminals. 8.23.11 The commissioning procedure shall be undertaken by a competent independent Commissioning Specialist acting for the Contractor and approved by the engineer. Before any commissioning is started, the Contractor shall ensure that each installation has been cleaned, inspected and pressure tested(if applicable). 8.23.12 The entire commissioning procedures shall be performed to the satisfaction of the engineer. The results of the commissioning shall be
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recorded by the Contractor (or his Specialist) on the Commissioning Certificate forming part of the contract documents and shall be endorsed by the engineer. The items on the Certificate shall be read in conjunction with the appropriate clauses of the contract and any supplementary specification and the design requirements of the drawings and the certified results and statement pertaining to the commissioning procedure shall be interpreted accordingly. The Commissioning Specialist is required to insert the certificate of temperatures and other data indicating the thermal performance of central and sub-plants. The information shall be recorded at the time of commissioning. 8.23.13
System validation Tests All equipment, installations and their associated services shall be subjected to the following tests: a)
Initial Trial (Installation) Test. After completion of works the Contractor shall test, adjust, balance until the required condition is obtained. The test shall include insulation test for all electrical works, interlocks, safety cut-outs and other protection devices to ensure correct functioning. All such tests shall be carried out in the presence of the engineer or his representative and full records of the values obtained shall be prepared along with final settings. b) Operational Test. After the completion of initial trial test, the operational test will be carried out to ensure correct functioning of the plant as a whole where all components of the plant will be in operational condition. c) Reliability (Performance) Tests After finishing the operational test, the summer reliability tests shall be made under the full responsibility of the Contractor. Contractor shall provide full time skilled operators for running the plant during the whole test period. For the HVAC system perform additional inspections such as air distribution pattern at diffused level, and CFM generated and interring the room etc, testing and adjusting during near-peak of summer to verify that all conditions are being maintained and systems are operating within contract specified parameters. d) Recovery Test Conduct recovery test for HVAC system and the following manner. Stop the system and ensure that room internal weather conditions and the external conditions are same (during extreme period). Start HVAC system by keeping all setting at designed level. The conditions (RH/Temperature and pressure) should be obtained within 20-25 minutes from starting.
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8.23.14
Training for “End User (Client) Personnel” Contractor’s specialist engineers shall train the Client’s maintenance personnel to adjust, operate and maintain different mechanical equipment and systems as follows: a) Train the Client’s maintenance personnel on procedures and schedules for starting up and shutting down the system. Minor trouble shooting, routine servicing and maintaining different mechanical equipment. b) Review data in maintenance manuals. c) Schedule training with the advance notice.
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STANDARD OF SUBMITTALS
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9- STANDARD OF SUBMITTALS
9.1
Shop Drawings Submittals
77
9.2
Materials Submittals
78
9.3
Samples Submittals
79
9.4
Contractor Work Procedures
79
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9.1- Shop Drawing Submittals 9.1.1 9.1.2 9.1.3 9.1.4
9.1.5 9.1.6 9.1.7 9.1.8
9.1.9
9.1.10
Shop Drawing Should be prepared on A3 Size with proper scale & Proper No & Revision (If any). Shop drawing Should have proper logo showing detail description for client, consultant, main contractor, sub-Contractor. Shop drawing Should be fully coordinated with all services before submitting drawing for approval. Shop drawing shall be signed & stamped by the contractor to indicate that has properly checked the drawings for conformance with all requirements of the drawing and specification. Shop drawing should indicate clearly all services and materials / requirements actually being supplied & installed at site. Shop drawings should indicate details of construction & installation, accurate dimensions, capacity for all materials / requirements. Shop drawing should indicate sufficient sectional details required for the approval by the consultant Shop drawing should have complete details of locations, sleeves, Opening for all passage through structure (trenches & ducts), & other such builder's work for all services With in one month from the date of awarding of the contract the contractor should submit to the Engineer for his approval, the detailed schedule of proposed shop drawing in a format acceptable to him. The drawing will be reviewed by the concerned Engineer, forwarded to MEP Head for rechecking.
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9.2- Materials Submittals 9.2.1
9.2.2 9.2.3 9.2.4 9.2.5
9.2.6 9.2.7 9.2.8 9.2.9 9.2.10
With in one month from the date of awarding of the contract, the contractor should submit to the Engineer for his approval a detailed schedule of proposed material in a format acceptable to him. Material submittal should have main index / list of items showing all the contents Inside the file. Material submittal should have a complete project specification, properly highlighted for the proposed items. The contractor should submit 4sets of material submitted for the consultant approval Material submittal should have our specified / approved manufacture list and to be highlighted for the proposed item.
Material submittal should have original catalogue & properly highlighted for the proposed item. Material submittal should have data sheet, showing the catalogue reference, model number, quantity of the proposed item. Material submittal should have supplier a contact number & contact person mobile number. The approved submittal form given by Engineer, should be properly filled by the contractor. The material submittal will be reviewed by he concerned Engineer and forwarded to MEP Head for rechecking.
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9.3- Samples Submittals 9.3.1
The contractor has to submit samples of all items proposed for use in the project Other then the major equipment or as directed by the engineer. 9.3.2. The sample will be checked & Confirmed by the relevant Engineer and forwarded to MEP Head for rechecking and final approval 9.3.3 The contractor shell obtain manufacturer's installation directions and should submit two set of copies of such directions to the consultant prior to installation
9.4- Contractor Work Procedures 9.4.1 9.4.2
9.4.3 9.4.4
9.4.5
The contractor should submit work procedure according to the type of installation. The work procedure should indicate the scope , risk involved, safety precaution to be observed, tools to be used and indicate clearly the laying of execution responsibility The work procedure should also indicate the name and designation of the persons “prepared by”, “checked by” and “approved by”. Finally it should be submitted to engineer for his authorization to be used this work procedure at site. . The work procedure should have a fixed sequence of operations required to complete any system installation. The contractor should have the responsibility to schedule his all type of installation at work so that all types of work will be installed at proper time and without delaying the completion of the entire project. The contractor should be responsible for coordination with any other trades or his subcontractor so that there is no conflict during the proper execution of project.
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Technical Administration/Procedure
80
10- PROCEDURES & FORMS FOR MEP WORKS. 10.1
Shop Drawing Submittal For Approval
82
10.2
Material Submittal For Approval
82
10.3
Submittal For Approval of Subcontractor
82
10.4
Request For Inspection (I.R)
83
10.5
Request For Information (R.F.I)
84
10.6
Non Conformance Report (N.C.R)
84
10.7
Method Statement of Installation (MI)
84
10.8
Testing & Commissioning Procedures (TC)
84
10.9
Operation & Maintenance Manuals (OM)
85
81
10.1- Shop Drawing Submittal for Approval (SD). 10.1.1 10.1.2 10.1.3 10.1.4
Shop drawing submittal should be initiated by the Contractor Shop drawing submittal should be received by the Engineer Shop Drawing Submittal Should be checked by the MEP- Head of Department (H.O.D) Shop Drawing Submittal template( Blank form) should be approved by the Project Manager / Project Engineer
10.2- Material Submittal for Approval (MS) 10.2.1 10.2.2 10.2.3 10.2.4
Material submittal should be initiated by the Contractor. Material submittal should be received by the Engineer. Material Submittal should be checked by the MEP -Head of Department (H.O.D). Material Submittal template (blank form) should be approved by the Project Manager / Project Engineer.
10.3- Submittal for Approval of Sub-Contractor/s 10.3.1 10.3.2 10.3.3 10.3.4 10.3.5 10.3.6
Sub-Contractor submittal should be initiated by the Contractor. Sub-Contractor submittal should be received by the Engineer. Sub-Contractor Submittal should be Checked by the MEP Head of Department (H.O.D). Sub-Contractor Submittal should be approved by Project Manager / Resident Engineer. Sub-Contractor should Submit an organization chart showing the designation and name of the relevant persons for engineer’s approval. CV's of All Engineers and foremen in the organization chart should be indicated in the submittal with separately indicating their job description and responsibility towards the project.
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10.3.7 10.3.8 10.3.9
Sub-Contractor Submittal for approval should have the valid copy of trade licenses. Sub-Contractor Submittal for approval should include a list of similar projects (i.e., same as awarded) executed in the UAE. Sub-Contractor Submittal for approval should include company profile and prequalification documents.
10.4- Requests for Inspection (IR) 10.4.1
Inspection request submittal should be initiated by the Contractor.
10.4.2 10.4.3
Inspection request submittal should be received by the Engineer. Inspection request should be Checked by the MEP Head of Department (H.O.D). Inspection request Submittal should be approved by Project Manager / Resident Engineer.
10.4.4
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10.5- Request for Information (RFI) 10.5.1 10.5.2 10.5.3 10.5.4
Request for information submittal should be initiated by the Contractor. Request for information submittal should be received by the Engineer. Request for information should be Checked by the MEP Head of Department (H.O.D). Request for information Submittal form should be approved by Project Manager / Resident Engineer
10.6- Non Conformance Report (NCR) 10.6.1 10.6.2 10.6.3 10.6.4
NCR submittal should be initiated by the engineer. NCR submittal should be received by the contactor. NCR should be Checked by the MEP Head of Department (H.O.D). NCR should be approved by Project Manager / Resident Engineer.
10.7- Method Statement of Installation (MI) 10.7.1 10.7.2 10.7.3 10.7.4
MI submittal should be initiated by the contractor. MI submittal should be received by the Engineer. MI should be Checked by the MEP Head of Department (H.O.D). MI Submittal should be approved by Project Manager / Resident Engineer.
10.8- Testing & Commissioning Procedures (TC) 10.8.1 10.8.2 10.8.3 10.8.4
TC submittal should be initiated by the Contractor. TC submittal should be received by the Engineer. TC should be Checked by the MEP Head of Department (H.O.D). TC Submittal Template (Blank form) should be approved by Project Manager / Resident Engineer. There should be separate TC template for each system.
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10.9- Operation & Maintenance Manuals (OM) 10.9.1 10.9.2 10.9.3 10.9.4
OM submittal should be initiated by the contractor. OM submittal should be received by Engineer. OM should be Checked by the MEP Head of Department (H.O.D). OM Submittal template (blank form) should be approved by Project Manager / Resident Engineer.
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ANNEXSURES (Templates)
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Index 11.01 11.02 11.03 11.04 11.05 11.06 11.07 11.08 11.09 11.10 (@)
Page Nos. Site Instruction Template (@) Template Non Conformance Report (N.C.R) Template Request for change (RFC) Project Budget amendment request Document Issue Template Material Submittal Template Request for Information template (RFI) Submittal for approval of sub. Contractor/ specialist Template. Template for Method statement Template for Job description. Template Means :
Blank Form/Format
87
88 89-90 91-92 93-94 95 96 97 98-99 100-103 106-107
SITE INSTRUCTION Project
:
Consultant
:
Contractor
:
Site Instruction No.
Subject
:
Issued By Received By
Date :
:
For Consult
:
For Main contractor 88
PROJECT : CLIENT : CONSULTANT: CONTRACTOR : NON-CONFORMANCE REPORT
Project No. Date of Inspection
NCR No : :
Architect/Engineer : Non-Conformance Details Signature of Architect/Engineer
Signature of Contractor
Corrective action proposed to be Taken
Signature of the Contractor
Date agreed for Completion
Preventive action proposed to be taken
89
Signature of the Contractor Date agreed for Completion Verification and approval of Corrective action Taken
Actual Date of completion
Sig. Of Architect/Engineer
Date of inspection
Verification and approval of Prevention action taken Actual Date of completion
Sig. Of Architect/Engineer
Date of inspection
Follow up and closing of NCR
Signature of Architect/Engineer
Date of close out of NCR
90
REQUEST FOR CHANGE
No. :
Contractor: RFC Dated : PROPOSED CHANGE DESCRIPTION ORIGINATOR
ORIGINATOR'S REFERENCE
REASON FOR REQUESTED CHANGE
DETAILED DESCRIPTION OF REQUESTED CHANGE
C. Revised Cost Summary is attached
Time Impact : No time implication at present
Cost Impact (AED) :
Contract Engineer
Signature 10/12/2006
PROJECT MANAGER / EXECUTIVE COST MANAGER'S COMMENTS & ACTION
Project Manager :
Signature
Executive Cost Manager :
Signature
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CLIENT'S COMMENTS / AUTHORISATION
Project Director :
Signature
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PROJECT BUDGET AMENDMENT REQUEST
No. :
PBAR / ?? /
PBAR Dated : PROPOSED CHANGE DESCRIPTION REASON FOR REQUESTED AMENDMENT TO CONTRACT BUDGET
DETAILED DESCRIPTION OF REQUESTED AMENDMENT TO PROJECT BUDGET Note: Provide details / history of why the Project budget is required to be amended. This may be a top up to the existing contingency, in which case all major cost impacts exhausting the original contingency are required to be explained.
ACTION PLAN TO MITIGATE OVERSPEND Note: Provide details of future actions to be taken to bring the budget back on original course, or / and to ensure further Requests for Amendments to Project Budgets are not made.
Original Project Budget:
Requested Project Budget:
Project Manager:
Signature
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Date
(Company & Name) Executive Cost Manager: (Company & Name)
Signature
Date
Signature
Date
CLIENT'S COMMENTS / AUTHORISATION te: Client to comment where / if necessary
Project Director: (Company & Name)
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DOCUMENT ISSUE To
:
Job. No : Ref. No. :
Attn
:
Date
:
STATUS CODES Information Comments Approval
C.C.
Coordination
:
Preliminary
From :
Tender Construction
Project :
As Built
1 2 3 4 P T C Z
Dear Sirs, We enclose the following documents as noted, Quanti ty
Document Ref./ Revisio Date of n No. Revision Drawing. No.
Description
Yours faithfully, For Contractor .…………………………………………………………..
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Statu s Cod e
MATERIAL SUBMITTAL FOR APPROVAL PROJECT CONSULTANT
Ref. Date
. CLIENT
Job No.
CONTRACTOR Description Location/Use B.O.Q. Ref. Spec. Ref.
Drawing Ref.
Manufacturer/ Supplier
Origin
Attachments to this submittal Submittal according to Specs. Submittal is alternative to Specs.
Submittal is equivalent to Spec.
FOR ENGINEER Date of receipt by Engineer Submittal is :APPROVED NOT APPROVED APPROVED WITH COMMENTS RETURNED FOR RESUBMISSION ENGINEERS COMMENTS
Engineer Stamp Signature Date :
Project Manager Stamp Signature Date :
For Contractor : Date of receipt: Signature:
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REQUEST FOR INFORMATION (RFI) Project Subject
: : Request No.
Please supply your instruction / information on the following by :
Date
for Signed : ………………………………..
Dated :
REPLY FROM ARCHITECT, ENGINEER, AND S.O OR AUTHORISED REPRESENTATIVE.
for Consultant. Signature: ………………………………..
Dated :
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SUBMITTAL FOR APPROVAL OF SUB-CONTRACTOR/ SPECIALISTS PROJECT
Ref.
.
CONSULTANT
Date
. CLIENT
Job No.
CONTRACTOR
Discipline / Activity Proposed Name Ownership of Company & Origin
Supporting Documents
List of attachments to this form : Statement of relevant experience Statement of ownership / origin Resources Statement (labour, machinery & equipment) Management Structure. Affiliation with International Firms. Others / Photographs of relevant project FOR ENGINEER Date of receipt by Engineer Submittal is :APPROVED NOT APPROVED APPROVED WITH COMMENTS RETURNED FOR RESUBMISSION ENGINEERS COMMENTS
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Engineer Stamp Signature Date : For Contractor : Date of receipt:
Signature:
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TEMPPLATE FOR METHOD STATEMENT Title: Method statement for -------------------------(mention the name of method statement Code No. As per department write code no Page No: current page no./ total page no. Example: Ref. ETTS/MS/Gen/02 Issue date: --------as applicable Effective date as applicable Revision: as applicable Supersedes: as applicable Distributed to: client, site engineer, site foreman, charge hand and File Reason for Revision: First Issue or second issue as applicable.
Objective:
Scope: Responsibility:
Prepared and checked by
Approved by
Authorized by
Site engineer
Project Manager
General Manager
Name:
Name:
Name :
Signature:
Signature:
Signature:
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Title: Method statement for -------------------------(mention the name of method statement Code No. As per department write code no. Page No: current page no./ total page no. Issue date: --------as applicable
Effective date as applicable
Revision: as applicable Supersedes: as applicable Distributed to: client, site engineer, site foreman, charge hand and File Reason for Revision: First Issue or second issue as applicable.
Abbreviation:
Standard Component:
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Title: Method statement for -------------------------(mention the name of method statement Code No. As per department write code no. Page No: current page no./ total page no. Issue date: --------as applicable
Effective date as applicable
Revision: as applicable Supersedes: as applicable Distributed to: client, site engineer, site foreman, charge hand and File Reason for Revision: First Issue or second issue as applicable.
General Safety precaution:
Description of Hazard:
Special safety precaution for above Hazard:
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Title: Method statement for -------------------------(mention the name of method statement Code No. As per department write code no. Page No: current page no./ total page no. Issue date: --------as applicable
Effective date as applicable
Revision: as applicable Supersedes: as applicable Distributed to: client, site engineer, site foreman, charge hand and File Reason for Revision: First Issue or second issue as applicable. Main Procedure for executing the method statement application: 1. 2. 3. 4. 5. 6. 7. n. The end of the document
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JOB DESCRIPTION (Template) Job title: Job code: Job holder: Reports to: First reports:
..... .....
Job description: Responsibility: Authority:
..... ..... ..... ..... ..... .....
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internal
..... ..... .....
external
..... ..... ....
Communication
Requirements:
...... ..... ..... ......
Department manager review Employee Review Human resource review
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ABBERIVATIONS
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>MEP : >MEP : >MDB : >SMDB : >DB : >ISO : >BS : >ASTM : >ASHRE: >IEE : >IP : >DEWA : >BOQ : >FIDIC : >RE : >ARE : >MD : >UAE : >HVAC : >HOD : >IR : >RFI : >NCR : >MS : >TC : >OM : >MCB : >ELCB : >A&V : >EP : >QC : >XLPE : >WP : >DP : >JB : >CCTV : >BMS : >VCD : >PA : >LNB : >FM/AM : >NRV : >AC : >A/C : >LPG : >CFM :
Mechanical Electrical and Plumbing Mechanical Electrical and Plumbing Main Distribution Board Sub Main Distribution Board Distribution Board International Standard Orders British Standards American society for temperature and material American society for heating and Refrigeration Engineers. International Electrical Establishment (I) Environmental Protection. Dubai Electrical and Water Authority Bill of Quantity Federation of Construction Engineer-France Resident Engineer Assit. Resident Engineer Managing Director United Arab Emirates Heating Ventilation and Air Conditioning Head of Department Inspection Request Request for information Non Compliance Report Method statement Testing & Commissioning Operation Manual Molded Circuit Breaker Earth Leakage Current Breaker Ammeter & Voltmeter Earth Pit Quality Control Cross Link Polyethylene Weather Proof Double Pole Junction Box Close Circuit Tele Vision Building management System Video Compact Disc Public Address Local Net work Band Frequency Modulation /Amplification modulation Non Return Valve Air Condition Alternating Current Liquid Petroleum Gas Cubic feet p
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About the author
Dr. S.L.Sharma is originally an electrical engineer converted in aeronautical engineering and avionic specialist from naval aviation of Indian Navy. Graduated from Naval Aviation Technical Institute Cochin-India in 1983 and specialized from USSR (Formally). After working on various aircraft/helicopter carriers of Indian Navy for 18 year, retired in December1989. Since then he has handled various projects comprising industrial and domestics. Industrial projects include: airport runway extension, chemical, textile, industrial plastics, bulk drug, pharmaceutical and disposable surgical items including plastic syringes. Domestic projects include skyscraper towers for hotel and residential purposes. Row town houses and villas in victory height project at Dubai international sports city- Dubai. Dr. Sharma is renowned and seasoned electro mechanical project engineer in India and in Middle East. He had been on various senior executive positions at corporate sector both in India and in Dubai. Presently he is engaged with DIAR consult – Dubai as A. Resident engineer (MEP) for “Dubai International sports city” at Dubai. He possesses doctorate in management and a human resource. Contact: Dubai +971-50-6848309 India +91 731 2402503 Email:
[email protected] [email protected]
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