27-SAMSS-003

Materials System Specification 27-SAMSS-003 Field Erected Cooling Towers

5 December 2012

Document Responsibility: HVAC Standards Committee

Saudi Aramco DeskTop Standards Table of Contents 1

Scope............................................................. 2

2

Conflicts and Deviations................................ 2

3

References..................................................... 2

4

Definitions...................................................... 5

5

Responsibilities.............................................. 5

6

Proposals....................................................... 5

7

Design............................................................ 7

8

Materials....................................................... 14

9

Painting and Coating.................................... 14

10 Inspection and Performance Testing........... 14 11 Preparation for Shipment............................. 15 12 Drawings, Calculations and Data................. 16 13 Energy Efficiency……………………..……… 18

Previous Issue: 27 March 2012 Next Planned Update: 27 March 2017 Revised paragraphs are indicated in the right margin Primary contact: Hamid, Adel Sulaiman on 966-3-8809593 Copyright©Saudi Aramco 2012. All rights reserved.

Page 1 of 18

Document Responsibility: HVAC Standards Committee Issue Date: 5 December 2012 Next Planned Update: 27 March 2017

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3

27-SAMSS-003 Field Erected Cooling Towers

Scope 1.1

This specification covers the minimum mandatory requirements for the mechanical design; materials, fabrication, inspection, and testing of new induced draft-cooling towers, field erected, open type, (herein referred to as towers) used for both industrial and non-industrial applications.

1.2

The requirements in this specification are in addition to and supplement the requirements of the Cooling Tower Institute (CTI) standards and publications.

1.3

This standard does not address Humidified Air-Cooled Heat Exchangers.

Conflicts and Deviations 2.1

Any conflicts between this specification and other applicable Saudi Aramco Materials System Specifications (SAMSSs), Engineering Standards (SAESs), Standard Drawings (SASDs), or industry standards, codes, and forms shall be resolved in writing by the Company or Buyer Representative through the Manager, Consulting Services Department of Saudi Aramco, Dhahran.

2.2

Direct all requests to deviate from this specification in writing to the Company or Buyer Representative, who shall follow internal company procedure SAEP-302 and forward such requests to the Manager, Consulting Services Department of Saudi Aramco, Dhahran.

References Materials or equipment supplied to this specification shall comply with the latest edition of the references listed below, unless otherwise noted. 3.1

Saudi Aramco Documents Saudi Aramco Engineering Procedure SAEP-302

Instructions for Obtaining a Waiver of a Mandatory Saudi Aramco Engineering Requirement

Saudi Aramco Engineering Standards SAES-A-112

Meteorological and Seismic Design Data

SAES-B-054

Access, Egress, and Material Handling for Plant Facilities

SAES-B-068

Electrical Area Classification

SAES-H-001

Selection Requirements for Industrial Coatings Page 2 of 18



SAES-H-101

Approved Protective Coating Systems

SAES-K-101

Regulated Vendor list for Heating, Ventilating and Air Conditioning (HVAC) Equipment

Saudi Aramco Materials System Specifications 01-SAMSS-034

RTR Pressure Pipe and Fittings

17-SAMSS-503

NEMA Frame Motors

Saudi Aramco Inspection Requirements 175-270400

Manufacture of Water Cooling Towers

Saudi Aramco Forms and Data Sheets

3.2

Form 7305-ENG

Noise Level

Form NMR-7922-5

Nonmaterial Requirements for Cooling Towers

Industry Codes and Standards American National Standards Institute ANSI A14.3

Safety Requirements for Fixed Ladders

ANSI A58.1

Minimum Design Loads for Buildings and Other Structures

American Petroleum Institute API SPEC 5L

Specification for Line Pipe

American Society of Civil Engineers ASCE 7

Minimum Design Loads for Buildings and Other Structures

American Society of Heating, Refrigerating & Air-Conditioning Engineers ASHRAE Latest Edition

ASHRAE Standard 90.1

American Society of Mechanical Engineers ASME B16.5

Pipe Flanges and Flanged Fittings

ASME B16.47

Large Bore Flanges

American Society for Testing and Materials ASTM A27

Steel Castings, Carbon

ASTM A36

Structural Steel Page 3 of 18



ASTM A193

Alloy-Steel and Stainless Steel Bolting Materials for High-Temperature Service

ASTM A194

Carbon and Alloy-Steel Bolting Materials

ASTM A322

Steel Bars, Alloy, Standard Grades

ASTM A536

Ductile Iron Castings

ASTM A775

Epoxy Coated Reinforcing Bars

ASTM B85

Aluminum Alloy Die Castings

ASTM B97

Copper-Silicon Alloy Plate, Sheet, Strip and Rolled Bar

ASTM B179

Aluminum Alloys in Ingot Form

ASTM C94

Ready Mixed Concrete

ASTM C150

Portland Cement

ASTM E84

Surface Burning Characteristics of Building Materials

ASTM F467

Nonferrous Nuts for General Use

ASTM F468

Nonferrous Bolts, Hexagon Cap Screw, and Studs for General Use

American Wood-Preservers' Association AWPA C1

Timber Products, Preservative Treatment by Pressure Processes

AWPA C20

Structural Lumber, Fire Retardant Treatment by Pressure Processes

AWPA P5

Standards for Waterborne Preservatives

Cooling Tower Institute Publications CTI ATC 105

Acceptance Test Code for Water Cooling Towers

CTI STD 111

Gear Speed Reducers

CTI STD 114

Douglas Fir Lumber

CTI STD 118

Inquiry and Bid Form

CTI STD 131

Fiberglass Reinforced Plastic Panels Acceptance Test

CTI STD 137

Fiber Glass Pultruded Structural Products for use in Cooling Towers

CTI STD 152

Structural Design of FRP Components

CTI NCL 109

Nomenclature for Industrial Water Cooling Towers Page 4 of 18


CTI WMS 112


Pressure Preservative Treatment of Lumber

National Fire Protection Association NFPA 214

Standards on Water Cooling Towers

US Military Standards and Federal Specifications MIL-C-16173 3.3

Corrosion Preventive Compound, Solvent Cutback, Cold-Application

Material Field Erected Cooling Towers 9COM No. 6000002404 is a regulated vendor commodity as per SAES-K-101.

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Definitions Definitions shall be in accordance with CTI NCL 109 and this specification. Design Engineer: The Engineering Company responsible for specifying the design requirements for towers on CTI STD 118 data sheet, in accordance with the requirements of this specification. Energy efficiency ratio (EER): The ration of net cooling capacity in Btu/h to total rate of electric input in watts under designated operating conditions. Saudi Aramco Engineer: The Supervisor of the Piping and Mechanical Unit, Consulting Services Department, Dhahran. Saudi Aramco Inspector: The person or company authorized by the Saudi Aramco Inspection Department to inspect towers to the requirements of this specification.

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6

Responsibilities 5.1

The Tower Manufacturer is responsible for the thermal design, mechanical design, supply of all materials, fabrication, inspection, testing, and preparation for shipment of towers in accordance with this specification.

5.2

The Design Engineer is responsible for specifying the design requirements for towers.

Proposals 6.1

General 6.1.1

The Tower Manufacturer's proposal shall be based on CTI STD 118 Page 5 of 18



bid form details for individual towers and this specification.

6.2

6.1.2

The Tower Manufacturer may offer an alternative design, but must quote on the base inquiry documents.

6.1.3

The Tower Manufacturer's proposal shall include a detailed description of any exception to the requirements of this specification.

Detailed Requirements The proposal shall include a completed CTI STD 118 data sheet containing all applicable information, with the additional information as listed below. This information is necessary and will be used to complete the technical evaluation of the quotation. The quotation will be technically unacceptable if any of the information required is not included. 1)

Exit air temperature from the tower(s).

2)

For multi-cell towers, the cold water temperature when one cell is shutdown and design duty and flow is distributed between remaining cells.

3)

Performance curves for 90%, 100% and 110% of design water low rates, indicating the tower temperatures versus ambient air wet bulb temperature. Commentary Note: The curves shall cover cooling ranges corresponding to 60%, 80%, 100% and 120% of design heat duty, at wet bulb temperatures ranging from 6°C below to 2°C above the ambient design wet bulb temperature at 1% exceedence level as specified in SAES-A-112 for the applicable location, and shall be based on constant fan power equal to the design power.

6.3

4)

If multi-speed fans are specified or proposed, the air delivered per fan at all speeds at inlet condition.

5)

Fan performance curves.

6)

A completed noise data sheet Form 7305-ENG with a detailed description of acoustical design.

7)

Thermal performance certificate in accordance with CTI STD105.

8)

Complete technical data for the fill materials in order to facilitate calculations of diffusion units.

Performance Guarantees The following shall be guaranteed for the length of the warranty period specified in the purchase order or contract documents:

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1)

Towers shall perform under continuous operation at design conditions specified on the data sheets. Thermal guarantee shall be in accordance with CTI STD 105 for 100% capability.

2)

Sound levels at all specified operating conditions.

3)

Vibration limits of the complete assembly in accordance with the requirements specified in this specification.

4)

Acceptable third party testing Agency shall be approved by CTI under “licensed CTI thermal Testing Agencies”.

Design 7.1

General 7.1.1

Towers shall be designed, supplied, and tested in accordance with the references specified in this specification and shall be CTI code towers. The thermal performance of towers shall be certified in accordance with CTI STD105 for 100% capability.

7.1.2

Unless otherwise specified by the Design Engineer, towers shall consist of a minimum of two cells.

7.1.3

The Tower Manufacturer shall advise the Design Engineer of the optimum tower orientation with respect to the prevailing summer wind direction.

7.1.4

All electrical equipment shall be in accordance with the area classification specified in SAES-B-068.

7.1.5

Towers shall be designed for installation on a supplied concrete cold water basin. The Tower Manufacturer shall provide all data for the design and construction of the water basin and foundation. Water basin capacity shall be six (6) times the design flow rate. Basin shall be provided with double suction screen.

7.1.6

Tower components shall be designed for maximum interchangeability of components.

7.1.7

Towers shall be designed for wind and earthquake loads in accordance with ASCE 7 (ANSI A58.1). With reference to ASCE 7 (ANSI A58.1)., the wind Category Classification to be used in the calculations of wind loads shall be

Page 7 of 18



Category III, and the Seismic Hazard Exposure Group to be used in calculations of earthquake loads shall be Group III. Wind pressures shall be assumed to act on the projected surface area and shall include due allowances for platforms, ladders, piping, insulation, and supported equipment. 7.2

7.3

7.4

Fill 7.2.1

Individual fill assemblies shall be removable and designed to prevent warping, sagging, or movement.

7.2.2

The minimum thickness of wood fill if used shall be 12 mm.

7.2.3

The fill shall be supported and fastened to prevent warping or buckling.

7.2.4

Only splash type fill or non-clog types shall be used in towers.

Casings 7.3.1

Casings shall be designed to preclude any leakage of water, and all joints shall be lapped and sealed.

7.3.2

Fire-retardant glass fiber reinforced plastic shall be 2.4 kg/m² minimum weight with vertical lapped joints. Corner rolls of glass fiber reinforced plastic shall be 3.6 kg/m² and shall blend harmoniously with endwall casings.

Louvers 7.4.1

Louvers shall be designed for easy removal in order to permit access to tower internals, and designed to prevent warping or sagging.

7.4.2

The minimum thickness of materials and the maximum support spans shall be as follows:

7.4.3 7.5

1)

Wood: 16 mm, on 900 mm centers

2)

Reinforced plastic: 10 mm, on 1200 mm centers

Louvers shall be constructed of precast reinforced concrete planking, when concrete towers are used.

Partitions 7.5.1

Multiple cell towers shall be provided with transverse partition walls between each cell to permit the removal of a cell without affecting the operation or capacity of the other cells. Page 8 of 18


7.6

7.7

7.8


7.5.2

Wood partitions shall have a minimum thickness of 12 mm.

7.5.3

Individual cells utilizing two or more fans shall be provided with partition walls to minimize recirculation of air and air bypassing when one or more fan is out of service.

7.5.4

Individual cells of counter-flow towers serviced by a single fan and having more than one louver face shall be provided with a partition located to prevent air from blowing from one louver face through the other louver face.

Structural Framing 7.6.1

Bolted construction shall be used for tower framework. Non-framework members, such as fill, sheathing and louvers shall not contribute to the structural strength of the tower.

7.6.2

Structural framework shall be provided with sufficient cross bracing to prevent tower vibration or sway.

Drift Eliminators 7.7.1

The maximum allowable drift loss shall be 0.0015% of the design water circulation rate for fresh water towers and 0.002% for salt water and brackish water towers.

7.7.2

Drift eliminators shall be easily removable.

7.7.3

Drift eliminators for counter-flow towers shall be designed to permit access to the entire water distribution system and shall be able to withstand a minimum live load of 122 kg/m².

7.7.4

Drift eliminators for cross-flow towers shall include removable sections for access to fill areas.

7.7.5

The minimum thickness of wood slats shall be 12 mm.

Tower Water Distribution Systems 7.8.1

Water distribution systems shall be designed to provide even distribution of water over the fill and to allow for the shutdown of individual cells.

7.8.2

Spray nozzles shall be designed as self-draining, and non-clogging.

7.8.3

Inlet water piping shall be provided with flanged terminal connections in accordance with ASME B16.5 or ASME B16.47. Page 9 of 18


7.8.4

7.8.5

7.9

7.10


Water distribution systems for counter-flow towers shall be designed as follows: 1)

A separate central header shall be provided for each cell, complete with laterals, fittings and spray nozzles.

2)

Headers and laterals shall be provided with cleaning access or flush-out facilities.

3)

Distributing systems shall be designed to accommodate pressure surges.

Water distribution systems for cross-flow towers shall be designed as follows: 1)

Each water distribution basin (pans) shall be fed through a flow control valve. Flow-control valves shall be located external to the distribution header.

2)

Plastic diffusing metering orifices to distribute water uniformly over the fill area shall be included.

Process Water Return Piping 7.9.1

Return water used for process cooling shall be designed by the Design Engineer in order to prevent the accumulation of process gases in a tower. Vents shall be extended out of the tower structure away from any ignition source.

7.9.2

Return process water piping shall be designed to accommodate pressure surges and water entrained process gases.

7.9.3

Gas vents shall be located above the tower structure.

7.9.4

Dirt and air separator vessels shall be provided upstream of pumps suction. Side stream separators are allowed.

Fans, Drivers and Transmissions 7.10.1

Fans shall be of the propeller type with fan blades having manual adjustment for varying pitch angles. Entire assemblies shall be statically balanced and match-marked prior to shipment and guaranteed to be dynamically balanced within 15 mil accuracy at the design operating speed.

7.10.2

The fundamental frequency of fan blades shall not coincide with any source of vibration in the range of 10% below the minimum design operating speed and 10% above the maximum design operating speed. Page 10 of 18



The machinery and mounting structure natural frequencies must also have a 10% separation margin with any source of vibration. 7.10.3

Fan hubs shall be statically balanced with each fan blade statically balanced against a master blade.

7.10.4

When fan hub and blades are of dissimilar metals, they shall be insulated from each other to prevent galvanic corrosion.

7.10.5

Fan drivers shall be by electric motor, located outside the perimeters of moist air streams. Motors shall be TEFC type, premium efficiency, sever duty, class F insulation, constant speed, variable torque with normal starting torque, and VFD compatible. Motors shall have weather proof electrical connection boxes.

7.10.6

Motors shall be manufactured in accordance with 17-SAMSS-503.

7.10.7

Speed reducers shall be spiral bevel type gears with a service factor of 2.0 in accordance with CTI STD 111. Seals shall be provided for protection against moisture leakage at shafts. Oil filling and level indicator shall be located outside fan stacks. Oil filling line shall be gradually sloped towards the gearbox, and shall be separated from the oil level indicating line. Both lines shall be of 316 SS material or better.

7.10.8

Gear boxes for reversible motors shall be suitable for lubrication in both directions.

7.10.9

Speed reducers shall be directly coupled with a non-lubricated type of flexible coupling. Motor-Gear box coupling hubs shall be 316 SS or better. Coupling spacer shall be of 316 SS or Reinforced Composite material.

7.10.10 Non-corrosive metal safety guards shall be supplied on all moving equipment constituting a personal hazard. Guards, with a minimum thickness of 12 mm, shall be provided at each end of the floating shaft. 7.10.11 The entire drive assembly, including motor and speed reducer shall be mounted on a welded unitized steel support, and hot dip galvanized after fabrication. 7.10.12 Motor power shall have a 10% margin over the fan power requirement at maximum required pitch angle and design speed and at maximum ambient air temperature. Pressure loss due to louvers, fill, drift eliminators and guards shall be taken into account.

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7.10.13 Each fan shall be provided with a vibration shutdown device that will activated by an electrical signal from a vibration measuring transducer. The transducer location shall be such that frequencies associated with the fan and driver speed and the blade-pass vibration are sensed. If a single transducer system is used, the best mounting position shall be determined from the results of a vibration survey. 7.10.14 Maximum vibration on any machinery bearing in any direction shall not exceed 0.18 ins/sec RMS (4.5 mm/sec RMS), at rated speed and power. 7.10.15 Gear reducer shall be provided with Low Oil Level Switch, this switch shall disengage the fan motor on low oil level. 7.11

Access 7.11.1

Platforms with stairways or ladders shall be in accordance with the requirements of SAES-B-054 and this specification.

7.11.2

As a minimum, access for operations and maintenance shall be provided as follows: 1)

A minimum of one full stairway at one end and a stairway or ladder with safety cage at the other end. An additional stairway or ladder shall be provided where the distance to access exceeds 22.5 m.

2)

Guard railing, consisting of a top and midrail, shall be provided on stairways and platforms and around the perimeter of fans and water distribution decks.

3)

Extended fan stacks shall be provided with access means to fans, gears and couplings by removable sections or doors in the stack and shall be of sufficient size for removal of the fan hubs and speed reducers.

4)

For counter-flow towers, access shall be provided to drift eliminators, water distribution systems, and the fans of each cell by a ladder from fan decks. Each fan assembly shall be equipped with an access door with minimum opening of 600 x 760 mm through the fan deck. Doors shall open and close easily and be of watertight construction. Each cell shall be provided with safe maintenance access way to gearbox and hot water distribution deck at the drift eliminator level.

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5)

7.11.3 7.12

7.13

7.14


For crossflow towers, walkways and doors shall be provided at basin level for access to the tower interior and interior walls. Access and walkways shall be provided to fans and speed reducers.

Ladders and safety cages shall be designed in accordance with ANSI A14.3.

Decks and Fan Stacks 7.12.1

Fan and water distribution decks shall be designed for a live load of 290 kg/m² and shall be reinforced for concentrated or distributed dead loads such as fans, drivers and equipment used to maintain these items. Fan deck surface shall be anti-skid type.

7.12.2

Fan stacks shall have a minimum height of 1.2 m. Stacks in excess of 1.8 m shall be provided with a covered inspection opening located near fan blade elevations. The opening shall be a minimum of 150 mm diameter.

7.12.3

Fan stack shall be manufactured from high quality hand-laid FRP and shall provide a minimum of 17 mils UV gel-coat protection all surfaces.

7.12.4

Stack profile shall have a curved bell inlet to minimize fan inlet losses and a velocity recovery exit profile to reduce fan energy.

Noise Attenuation 7.13.1

The Design Engineer shall specify permissible limits for sound pressure levels (SPL) and sound power levels (PWL) at the designated locations, on Form 7305-ENG.

7.13.2

The Tower Manufacturer shall design and provide acoustical treatment necessary to meet the specified noise levels. This shall include muffling and acoustical lining as required.

Fire Fighting System Fire sprinkler system shall be provided by cooling tower manufacturer in compliance with NFPA 214. Fire detection system shall be pneumatic type. Fire water piping material shall be corrosion resistance type. Exception: FM approved Cooling Towers.

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Materials 8.1

All materials for a tower shall be in accordance with the CTI publications listed in the reference section and with Table 1.

8.2

The Tower Manufacturer may propose alternative materials at time of proposal, but the alternative materials must comply with all the requirements of this specification.

8.3

Materials other than those listed in Table 1 of this specification shall not be permitted without the prior approval of the Saudi Aramco Engineer.

8.4

All lumber shall be given a preservative treatment in accordance with CTI WMS 112 using Acid Copper Chromate (ACC) or Chromate Copper Arsenate (CCA). Applicable standards of AWPA for material, treatment, inspection and handling pressure treated wood are mandatory (AWPA P5, AWPA C1, and AWPA C20).

8.5

Plastic tower-fill and plastic panels used for casing, louvers, drift eliminators and fan stack construction shall have a flame spread classification of not more than 25 in accordance with ASTM E84.

Painting and Coating 9.1

Surfaces shall be prepared and painted in accordance with SAES-H-001 and SAES-H-101.

9.2

Gasket contact surfaces shall not be painted.

Inspection and Performance Testing 10.1

Inspection 10.1.1

All materials and fabrication shall be subject to inspection by the Saudi Aramco Inspector in accordance with Saudi Aramco Inspection Requirements Form 175-270400.

10.1.2

Written reports and evaluations of all inspections performed by the Tower Manufacturer shall be made and submitted to the Saudi Aramco Inspector, at a frequency to be determined by the Saudi Aramco Inspector.

10.1.3

Prior to final inspection and performance testing, the inside and outside of towers shall be thoroughly cleaned of all slag, scale, dirt, grit, weld spatter, paint, oil, etc.

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10.2

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10.1.4

The Saudi Aramco Inspector shall have free access to the work at all times.

10.1.5

No tower or tower parts shall be released for shipment without the approval of the Saudi Aramco Inspector.

10.1.6

Treated lumber shall be certified the Tower Manufacturer by either group markings or individually grade marked. Incised lumber shall be inspected for proper depth and incisions prior to preservative treatment.

10.1.7

A certificate of grading shall be supplied for all lumber that requires a preservative treatment.

Performance Testing 10.2.1

A performance test shall be conducted in accordance with the procedures specified in CTI ATC 105 and this specification. The test shall be made during the first period of hot weather following tower completion and within the guarantee period specified in the purchase order or contract documents.

10.2.2

The wet bulb ambient air temperatures shall be based on the ambient wet bulb temperatures and shall be the arithmetic average of measurements from not less than three locations, measured on the windward side of the tower only and not more than 1500 mm above the top of the basin curb and not less than 15 m or more than 30 m from air intakes at intervals not to exceed the width of each cell.

10.2.3

The average results of three tests, each of one hour duration, shall be the basis for fulfillment of the guarantee. Tests may be consecutive but shall not overlap.

10.2.4

All connections and instruments required for flow, temperature and pressure required for performance testing shall be provided by the Tower Manufacturer.

Preparation for Shipment 11.1

The Tower Manufacturer is responsible for preparing materials for shipment and assuring their arrival on-site in good condition.

11.2

All components shall be packed, securely anchored and satisfactorily protected for their respective shipment methods.

11.3

One complete set of installation, operating, and maintenance instructions shall be packaged and shipped with the equipment. Page 15 of 18


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11.4

Bracing, supports, and rigging connections shall be provided to prevent damage during shipment, lifting and unloading.

11.5

All exposed finished and machined surfaces, including un-galvanized bolts, shall be coated with a rust-inhibiting compound.

11.6

Bearings and seal assemblies shall be fully protected against the entry of moisture and dirt.

11.7

Metallic flanged connections and all other metallic machined surfaces shall be protected by a coating, such as MIL-C-16173 Grade IV, which is easily removed in the field. All flanges shall be fitted with a steel or wood cover, 3 mm thick and neoprene gaskets.

11.8

Markings shall be done with water soluble materials that contain no harmful substances that would attack or harmfully affect coils at both ambient and operating temperature.

11.9

Marking materials shall be free of lead, sulfur, zinc, cadmium, mercury, chlorine, or any other halogens.

Drawings, Calculations and Data 12.1

The Tower Manufacturer shall prepare drawings, calculations, and data in accordance with Form NMR-7922-5, Non-material Requirements.

12.2

Drawings and calculations, which are approved by the Design Engineer, shall not relieve the Tower Manufacturer of the Tower Manufacturer's responsibilities to comply with the Code, and this specification. Table 1 Component

Basic Material

Structural Framework

Douglas Fir Concrete FRP Pultruded Fiber Glass

Fill

Polypropylene Ceramic Polyvinyl Chloride Douglas Fir Plywood Glass Fiber Reinforced Polyester Douglas Fir

Casting and Louvers

Specification CTI STD 114 CTI-137 CTI-152 ASTM C150 Type I or II ASTM C94, ASTM A775 CTI STD 114

CTI STD 131 CTI STD 114

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Document Responsibility: HVAC Standards Committee Issue Date: 5 December 2012 Next Planned Update: 27 March 2017 Component Drift Eliminators

Basic Material

27-SAMSS-003 Field Erected Cooling Towers Specification

Douglas Fir Polyvinyl Chloride Glass Fiber Reinforced Polyester Douglas Fir Plywood Concrete FRP Carbon Steel RTR PVC HDPE Douglas Fir Glass Fiber-Reinforced Polyester Concrete Douglas Fir Carbon Steel Concrete FRP Aluminum Glass Fiber-Reinforced Polyester or Epoxy Coated Ductile Cast Iron Cast Aluminum Aluminum 316 SS Quenched and tempered, and stress relieved BHN 280 min. Composite

CTI STD 114

Coupling

Carbon Steel

ASTM A27, Grade 60, 30

Fan Bolts and Hardware

Stainless Steel

ASTM A194 - 8M ASTM A193 - B8M ASTM B97 Alloy C65500

Fan Deck Flooring Internal Partitions

Piping

Fan Stack

Stairways and Railings

Fan Blades

Fan Hubs

Drive Shaft

Anchors and Structural Connections

Fiber Glass-Reinforced Polyester Silicon Bronze Bolts, self lock Nuts, Washers, Silicon Bronze or Nails and Lag Screws Aluminum Bronze Mechanical Equipment Carbon Steel Supports, Guards, Ladders and Safety Cages

CTI STD 114 PS 1 ASTM C150 Type I or II API SPEC 5L 01-SAMSS-034

CTI STD 114 CTI STD 131 ASTM C150 Type V CTI STD 114 ASTM A36 ASTM C150 Type I or II ASTM B85, 6061-T6

ASTM A536 Grades 60-14-18, 60-45-12, 80-55-06 ASTM B179 ASTM B85 SG 100A ASTM A322 Grade 4340 BD

ASTM F467, ASTM F468 UNS C65500 or UNS C61400 ASTM A36

General Notes: (1)

Douglas fir lumber shall be dense select structural grade.

(2)

Douglas fir plywood shall be exterior marine type AA.

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(3)

Carbon steel tower piping shall be internally FBE-coated and externally coated in accordance with the Index H standards referenced in this specification.

(4)

Carbon steel guards, ladders, safety cages and mechanical equipment supports shall be coated in accordance with the Index H standards referenced in this specification.

Energy Efficiency The Energy Efficiency Ratio (EER) or the Coefficient of Performance (COP) for the equipment in this MSAER shall meet or exceed ASHRAE 90.1 “Energy Standard for Buildings Except Low-Rise Residential Buildings”.

27 March 2012 5 December 2012

Revision Summary Major revision to include FRP Industrial Cooling Towers. Minor revision to optimize HVAC equipment energy consumption.

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27-SAMSS-003

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