YINSON PRODUCTION
Ghana OCTP Development Project OCTP Offshore FPSO
A1
EX-DE
-
28.04.2015 Issued For Review
KP
CPL
MV
01 YP Rev.
EX-DE Validity status
ENI Rev.
24.04.2015 For IDC Date Reason for issue
KP Prep.
ALJU Checked
CPL Accepted
Contract no. : Yinson Production Pte. Ltd. 3 Church Street, Samsung Hub #17-05 Singapore 049483
AR/PROC/2013/08/0508 Purchase order no.:
Doc. title :
Pipe Support Specification Tag No.:
Supplier document no._Rev. ENI document ID
Facility
Subfacility
Phase
3514
01
B
Project no.
1305
Origin. code
-
YP
Disc. code
YP document number Disc. code Doc. type
System code
-
00
Type & subtype
-
L
-
SA
-
Sequence no.
ENI Rev
Sequence no.
Rev
Total no. of Pages
00002
A1
72
Ghana OCTP Development Project OCTP Offshore FPSO Document no. : 1305-YP-00-L-SA-00002 Title : Pipe Support Specification Revision : A1
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TABLE OF CONTENTS 1.
INTRODUCTION ............................................................................................................................. 4 1.1 Purpose ............................................................................................................................... 5
2.
SCOPE OF WORK ........................................................................................................................... 5
3.
CODES, STANDARDS AND REGULATION DOCUMENTS ................................................................. 5
4.
REFERENCE DOCUMENTS .............................................................................................................. 6
5.
DEFINITIONS & ABBREVIATIONS ................................................................................................... 6
6.
PIPE SUPPORT CATEGORIES .......................................................................................................... 7 6.1 Standard Pipe Supports ...................................................................................................... 7 6.2 Non-Standard Pipe Supports (NSPS) ................................................................................... 7 6.3 Special/Structural Pipe Support (SPS) ................................................................................. 7
7.
MATERIALS .................................................................................................................................... 7 7.1 Welding of Supports ........................................................................................................... 7 7.2 Pipe Support Frames and Components .............................................................................. 7 7.3 Fasteners ............................................................................................................................. 8 7.4 Painting ............................................................................................................................... 8
8.
DESIGN CRITERIA ........................................................................................................................... 8 8.1 General................................................................................................................................ 8 8.2 Design Stresses ................................................................................................................... 8
9.
DESIGN GUIDELINES AND FABRICATION REQUIREMENTS ............................................................ 9 9.1 General................................................................................................................................ 9 9.2 Non-Insulated Carbon Steel Lines ....................................................................................... 9 9.3 Insulated Carbon Steel Lines ............................................................................................... 9 9.4 Non-Insulated Stainless Steel 316/316L and Duplex .......................................................... 9 9.5 Insulated Stainless Steel 316/316L and Duplex ................................................................ 10 9.6 Welded Attachment to Pipe ............................................................................................. 10 9.7 Guide Clearance ................................................................................................................ 10 9.8 Trunnion ............................................................................................................................ 10 9.9 Penetrations ...................................................................................................................... 10 9.10 Dissimilar Metals ............................................................................................................... 10 9.11 Support for Pipe NPS 1 ½” and Below............................................................................... 11
10.
FABRICATION RECORDS AND TRACEABILITY ............................................................................... 11 10.1 Material Traceability ......................................................................................................... 11 10.2 Weld Traceability .............................................................................................................. 11
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11.
STANDARD SUPPORT ITEMS........................................................................................................ 11 11.1 General ........................................................................................................................... 11 11.2 Shoes ........................................................................................................................... 11 11.3 Isolation Components ....................................................................................................... 12 11.4 Low Friction Slide Units ..................................................................................................... 12
12.
SPRING SUPPORT ........................................................................................................................ 12
13.
PIPE SUPPORT LOCATIONS .......................................................................................................... 13 13.1 General ........................................................................................................................... 13 13.2 Structural Considerations ................................................................................................. 13
APPENDIX I – STANDARD PIPE SUPPORT INDEX .................................................................................... 14 APPENDIX II – RECOMMENDED SPANS FOR PIPE .................................................................................. 16 APPENDIX III – STANDARD PIPE SUPPORT DETAILS (53 PAGES) ............................................................ 19
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1.
INTRODUCTION
The OCTP (Offshore Cape Three Points) block is located in the offshore Ghana in 600-1000 meters (900 meters to be considered as average) of water depth and about 60 km from the coast. The OCTP block is regulated by a Petroleum Agreement signed on 15th March 2006 between the Republic of Ghana (Minister of Energy) and the Contractor group, formed by: Eni Ghana E&P Limited Vitol Upstream Ghana Limited GNPC
P.I. = 47.22%; P.I. = 37.78%; P.I. = 15%;
W.I. (expl. phase) = 55.56% W.I. (expl. phase) = 44.44% W.I. (expl. phase) = 0%
GNPC (Ghana National Petroleum Corporation) has an additional 5% back-in exercisable within 30 days of the date the commerciality is declared taking then their paying share to 20%; Eni’s equity reduces to 44.44% and Vitol to 35.56% as consequence. The exploration period consists of 7 years and the second exploration period expired on the 14 th of March 2013. The commerciality of the gas discoveries has been declared and approved while, end of March 2013, an extension of the appraisal phase for the oil level has been requested for the drilling of the appraisal well Sankofa East 3A.
Figure 1: OCTP Block Location
Figure 2: OCTP Block Discoveries
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1.1
Purpose
This specification describes the minimum requirements for design, materials, installation and inspection of offshore facility support systems that will be used in offshore Ghana OCTP Development Project Yinson Production Pte. Ltd., hereinafter known as the COMPANY In case of conflict between the referenced codes and standards, COMPANY shall be consulted to solve the issue; as reference, the precedence will be: I. II. III. IV.
Ghana’s national and international laws Project Specifications, Standards Eni E&P Standards International Code and Standards
Any conflicts between requirements of this specification, related contract documents, datasheets, international standards, code of practice and the contract shall be referred to the COMPANY for clarification.
2.
SCOPE OF WORK
The scope of this document is to a) Outline the philosophy of pipe supporting on Topsides and Marine Piping above main deck (32410mm ABL) for Ghana OCTP Development Project. b) Provide a list of Standard Pipe Supports. This specification is relevant for supporting of all piping systems within Contractor and Sub-Contractors Scope. Pipe Supports are not included in this specification for following a) All instrument control piping/tubing on the downstream side of the first piping block valve. b) Risers, subsea pipework and pipelines. c) All heating and ventilation systems, air and water service systems within the E-house The CONTRACTOR shall use this specification and design the pipe support for process, utility and marine piping on FPSO Topsides and Marine Piping above main deck (32410mm ABL) i.e. forward of accommodation block (Frame 56) and Aft Pump Room (Frame 61) for Ghana OCTP Development Project. COMPNAY’s approval is required for the standard pipe support which CONTRACTOR is going to use on multiple locations and is not covered this specification prior to use. This excludes the pipe support frame structure and special pipe supports (SPS).
3.
CODES, STANDARDS AND REGULATION DOCUMENTS
ASME B31.3 ASME B31.4
ASME B31.8 ASME B16.5 ASME A36/36M ASME II Part C
ASME VIII
Process Piping Pipeline Transportation Systems for Liquid Hydrocarbons and Other Liquids Gas Transmission and Distribution Piping Systems Pipe Flanges and Flanged Fittings Standard Specification for Carbon Structural Steel (DNV Grade NV A36) ASME Boiler and Pressure Vessel Code Section II - Materials – Part C Specifications for Welding Rods, Electrodes and Filler Metals. ASME Boiler and Pressure Vessel Code Section VIII – Rules for Construction of Pressure Vessels (Div. 1 & Div. 2) Page 5 of 19
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4.
Classification Rules WRC No. 107 AWS D1.1
REFERENCE DOCUMENTS
5.
DNV rules and regulations on offshore installations Local Stresses in Spherical and Cylindrical Shell due to External Loading
GEN-L-XXX-SP-0004_2 Specification For Pipe Supports (By PTSC) 06732.PIP.MEC.SDS Pipe and Piping Components for Plant Piping Project Specification 1305-HW-00-L-SA-00001 Marine Pipe & Valve Specification 1305-YP-00-L-FD-00002 Pipe Stress Analysis Philosophy – Topside Piping 1305-DP-00-L-SA-00001 Pipe Stress Analysis Specification 1305-DP-00-Z-PH-00001 PDMS Modelling Philosophy 1305-DP-00-Z-PH-00002 PDMS 3D Model Review Philosophy 1305-YP-00-A-KA-00001 Numbering and Documentation Requirement 1305-YP-00-L-SA-00001 Topside Insulation Specification 1305-YP-00-L-TN-00001 Transiting Pipework through Modules 1305-YP-00-L-TN-00003 Piping Interface Strategy 1305-YP-00-R-FD-00001 Mechanical Handling Philosophy 1305-YP-00-Z-KA-00003 Project Equipment Numbering and Tagging Procedure 1305-YP-00-Z-SA-00004 General Technical Requirements 1305-YP-90-M-SA-00001 Structural Steel Material Specification 1305-YP-95-N-FD-00001 Topside Modules Structural Design Basis 1305-YP-90-N-SA-00001 Structural Welding and Fabrication Specification 1305-YP-98-J-SA-00002 Paint Specification 351400FFRB09900_Rev.00 HSE Philosophy (Minimum Requirements) 351401FGPG09406_Rev.01 FPSO Applicable Codes & Standards Norsok Lista req – YP reply 8th Dec.xls, Email attachment from Yinson on OCTP - NORSOK compliance S-001 / S-002 / C-001 and C-002.
DEFINITIONS & ABBREVIATIONS
The following are used throughout this philosophy:
CLIENT COMPANY CONTRACTOR INTEGRATOR
CAD MDS NSPS PDMS PTFE SPS TOS UNO 3D model
Description ENI GHANA E&P Ltd Yinson Production Pte Ltd The party responsible for the supply of EPC work/service for COMPANY The party responsible for integrating the topside and Main Deck of FPSO for COMPANY Computer Aided Design Multi-Discipline Supports Software by Aveva Non Standard Pipe Support 3D CAD software for engineering and design
Polytetrafluroethylene Special Pipe Support/Structural Pipe Support
Top of steel Unless Noted Otherwise Data files covering the physical volume of the plant, similar to a plastic model
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6.
PIPE SUPPORT CATEGORIES
6.1
Standard Pipe Supports
These shall be used wherever possible and practical, the details of which are shown in the attachments to this specification. The piping designer shall model standard pipe supports in MDS.
6.2
Non-Standard Pipe Supports (NSPS)
These are pipe supports that cannot be produced using the standard pipe supports, but do not require any design input from the Structural engineering group. The Piping designer shall model NSPS’s in MDS.
6.3
Special/Structural Pipe Support (SPS)
These are pipe supports that cannot be produced using the standard pipe supports because: the support dimensions, or the support loads are greater than those specified in the standard supports. Notification of the support details including dimensions, TOS elevation, support orientation, support loads and pipe sizes will be given to Structural Design Group by the Pipe Stress Engineer as soon as they have been identified and will be noted on the Pipe Stress Isometric. The Structural Group shall model this support in PDMS Structural and the Pipe Stress Engineer will verify the location and design of the support. Refer section 13.2.
7.
MATERIALS
7.1
Welding of Supports
Welded attachments to pipe shall be made of material that is compatible with the parent pipe. Pipe trunnions and dummy legs shall be made from the same material type as that of the parent pipe and shall be of wall thickness as defined by the relevant piping class as per Project Piping and Valve Material Specification. Only in exceptional circumstances shall a trunnion be specified outside of the relevant piping class, size and wall thickness range. For pipes requiring PWHT, attachments required for supporting purposes shall be indicated on the piping isometric drawings, and welding shall be performed in the workshop before PWHT.
7.2
Pipe Support Frames and Components a) Welded Material for pipe supports that are not integrally welded to the pipe shall be as follows:
CARBON STEEL All carbon steel material for general pipe support frames shall be ASTM NV A36 (or Company’s approved equivalent) in accordance with project specification 1305-YP-95-N-FD-00001 Topside Modules Structural Design Basis and 1305-YP-90-N-SA-00001 Structural Steel Material Specification. Carbon steel for general applications shall be within design temperature range -29 °C to 200 °C. For continuous duty below -10°C, NV A36 to be charpy impact tested at -29°C or replaced by NV A516 GR.70 (normalised).
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All structural components shall be supplied, fabricated, and NDE inspected in accordance with the project Specification, 1305-YP-90-N-SA-00001 Structural Welding and Fabrication Specification. STAINLESS STEEL Stainless steel for general pipe support use within design temperature range -100 °C to 100 °C shall be type 316/316L as follows: Plate to be in accordance with ASTM A240 TYPE 316/316L. Material shall be dual certified as 316/316L to take advantage of the full strength of Type 316, while providing the low carbon of Type 316L for weld ability purposes. Higher alloy grades of stainless steel (22Cr Duplex) may be specified when required by the design and/or operating conditions. b) Material for pipe supports that are integrally welded to the pipe (welded shoes, trunnions, etc.) shall be in accordance with the general notes & Table 1 of Appendix III (refer Appendices).
7.3
Fasteners
All U-Bolts are to be hot dipped galvanized in accordance with ASTM A153. All bolts shall be supplied complete with nut, locknut and 2 plain washers. Bolts are to be in accordance with ASTM A193 / A193M, and nuts in accordance with ASTM A194/A194M.
7.4
Painting
Painting of support frames and components shall be in accordance with project paint specification 1305-YP-98-J-SA-00002. Welded attachments shall be painted in accordance with painting system as parent pipe. All pipe attachments e.g. clamped shoes etc. which are beneath insulation, shall be painted in accordance with painting system as parent pipe.
8.
DESIGN CRITERIA
8.1
General
The atmosphere will be saline and corrosive. Pipe supports/restraints shall be positioned and designed such that the piping is supported and controlled in a manner which will minimise stresses and reactions within the system as far as is practicable. The pipe supports shall be located to minimise deflection of pipe during normal design conditions. Liquid pockets are to be avoided, as this may cause corrosion and increased slugging effects. Pipe supports attached to flange connections shall be avoided unless approved by Pipe Stress Engineer.
8.2
Design Stresses
Combined bending stresses in the support structure shall not exceed 2/3 x yield stress for maximum operating loads. Local pipe stresses must be evaluated for welded attachments (shoes, trunnions, linestops, etc.) taking consideration of all operating cases including thermal, deadweight, internal pressure, dynamic reactions and environmental. Combined stresses shall be no more than 1.5x Sch for material as given by ASME B31.3. Page 8 of 19
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For local buckling calculations for bare pipe resting on support, the stresses shall not exceed 0.67 x Sch as given by ASME B31.3. The limiting stress for calculations of pipe spans shall be 0.25 x Sch as given by ASME B31.3
9.
DESIGN GUIDELINES AND FABRICATION REQUIREMENTS
9.1
General
The method used to support the pipe shall ensure that the temperature at the interface with the supporting steelwork be within the range -10°C to 200°C for carbon steel.
9.2
Non-Insulated Carbon Steel Lines
NPS 2” - 14” Lines may rest on the support steel with due consideration to local indentation, local corrosion, and pipe wear. Bare pipe shall have a 5mm thick PTFE isolation pad between pipe and supporting steel, fixed to steel by adhesive, or screws. NPS 16” - 24” Lines shall be supported on shoes. Shoes to be clamped wherever possible.
9.3
Insulated Carbon Steel Lines
NPS 2” - 14” Carbon steel lines NPS 2” - 14” with personnel protection shall have the insulation locally removed for supporting, and be supported as un-insulated pipe, with due consideration to local indentation, local corrosion, and pipe wear. Bare pipe shall have a 5mm thick PTFE isolation pad between pipe and supporting steel, fixed to steel by adhesive, or screws. NPS 16” - 24” All other insulated lines shall be supported on shoes. Shoes are to be clamped wherever possible.
9.4
Non-Insulated Stainless Steel 316/316L and Duplex
316 / 316L and Duplex shall have galvanic isolation between the pipe and the support steel or standard component. The design temperature for the isolation material shall cover the operating temperatures for the piping system. Refer to section 11.3 – “Isolating Components”. NPS 2” - NPS 6” Lines may rest directly onto support steelwork, using a 5mm thick PTFE galvanic isolating pad (fixed to steelwork with adhesive or screws). Consideration shall also be given for local indentation. Refer to section 11.3 – “Isolating Components”. NPS 8” - NPS 24” Lines shall be supported on shoes. Shoes to be clamped wherever possible with galvanically isolated clamps, however lines with design minimum temperatures below-50°C shall be supported on welded shoes. Refer to section 11.3 –“Isolating Components”.
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9.5
Insulated Stainless Steel 316/316L and Duplex
NPS 2” - 6” Lines NPS 2” - 6” with personnel protection insulation shall have the insulation locally removed for supporting and be supported as for uninsulated pipe, i.e. resting directly on 5mm thick PTFE galvanic isolating pad. Refer to section 11.3 – “Isolating Components”. NPS 8” - 24” All other insulated lines to be supported on shoes. Clamped shoes to be used wherever possible with galvanically isolated clamps, however lines with design minimum temperatures below -50°C shall be supported on welded shoes.
9.6
Welded Attachment to Pipe
For all welded attachments to the pipe (except trunnions), the weld shall be C.F.W. (continuous fillet weld). The minimum distance from a pipe support attachment weld to any other weld on the parent pipe (e.g. circumferential butt welds) shall be 50mm or 2.5 x pipe wall thickness, whichever is the greater. All attachments welded to stress relieved pipes shall themselves be stress relieved. However, where the pipe has been supplied with a load distribution pad, then the attachment may be welded to the pad without stress relieving. All welding to pipes shall be in accordance with the project Piping Fabrication and Installation Specification. NDT shall be in accordance with the NDT Group assigned to the pipe, as detailed in the line list.
9.7
Guide Clearance
The normal clearance for guides shall be 3 mm unless noted otherwise.
9.8
Trunnion
Trunnions shall be of the same material and specification as the parent pipe. Reinforcement pads shall be avoided wherever possible using line size trunnions if required. Thin wall trunnions shall be checked for local buckling. A checked calculation sheet shall be filed for each trunnion. Note: For very highly loaded trunnions attached to elbows, the selection of out of spec thicker elbows may be considered provided a suitable tapered joint can be made between mismatched bores.
9.9
Penetrations
The design of supports next to the penetrations shall avoid any fouling of the seals and the sleeves around the penetration. Welding in any restricted areas around the penetrations shall also be avoided.
9.10 Dissimilar Metals The use of dissimilar metals in the design of a pipe support shall be avoided wherever possible. In situations where it is unavoidable, then the differing materials should be protected by providing suitable galvanic isolation, e.g painting, epoxy coating, etc. Welding between stainless steel and carbon steel is acceptable provided the distance from the weld to the parent pipe and / or primary steel is at least 50mm or the thickness of insulation, whichever is the greater. Welding must be carried out using approved procedures.
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Carbon steel and stainless steel may be bolted together using galvanised bolts, as long as a suitable isolating strip is provided between the two metals.
9.11 Support for Pipe NPS 1 ½” and Below Supports for non-stress critical pipes NPS 1½” (DN40) and smaller may be site adjusted as required. Additional supports may also be included by the fabricator. Guiding and supporting shall be sufficient to withstand operation, wind loads, and transit accelerations. Appendix II includes recommendations for spans for small bore pipe. U-Bolting of small pipes is permissible with due consideration of galvanic isolation where dissimilar materials may be in contact (in such cases an isolation pad, and insulated U-Bolts are to be used).
10.
FABRICATION RECORDS AND TRACEABILITY
10.1 Material Traceability All pipe support materials directly welded to the pipe shall be covered by material certificates EN 10204 type 3.1 (previously 3.1B), all other materials shall be covered by material certificates EN 10204 type 2.2. Material for pipe supports is not required to be traceable to material certificates after fabrication. Fabricators must have a system to control and identify material grades during fabrication, and be able to certify that the correct materials have been supplied in each component.
10.2 Weld Traceability Weld traceability shall be maintained by assigning unique numbers to individual welds or groups of welds which will be entered into a Weld Summary List. The Weld Summary List shall contain the following: Weld Number Drawing Number(s) Piping Line No. (as per P&ID, or Piping Fabrication Isometric) WPS Number(s) Welder Identification Number(s) Inspection Report Number(s) NDT Report(s) Weld numbering shall be established by the Fabricator. Numbering can be per individual weld, but for pipe supports it is expected that weld numbers can be grouped. For simple fabrications where only one weld type is used, a single weld number can be assigned to all welds on one support or a group of identical supports. The level of detail in assigning numbers shall be sufficient to demonstrate that the Fabricator has control of the application of weld procedures, welder qualification, and inspection status.
11.
STANDARD SUPPORT ITEMS
11.1 General Standard pipe support components as per Appendix III shall be used where ever possible.
11.2 Shoes Topside Piping: Shoes will be 100 mm high (measured from B.O.P to T.O.S) as standard and for insulation thickness upto 60mm. Where insulation thickness is 76 mm to 125 mm thick then a shoe height of 150 mm is to be used. The Page 11 of 19
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use of 150 mm high shoes (or higher) is also required where line temperatures are less than -46°C for sustained periods, and for sloped lines, to facilitate adjustment. Marine Piping: Non-insulated pipes: Pipes shall be supported on bonded wear pad except piping systems inside cargo oil tanks where pipes can be set directly on pipe support steel structure. Shoes will be 100 mm high (measured from B.O.P to T.O.S) as standard and for insulation thickness upto 60mm. Where insulation thickness is 76 mm to 125 mm thick then a shoe height of 150 mm is to be used. Shoes and welded attachments to the pipe will be in the pipe support contractor/fabricators scope of supply, and in general will follow requirements of this specification, unless otherwise noted.
11.3 Isolation Components Isolation components shall be used where protection from galvanic action is required due to dissimilar materials, or to reduce transmitted vibrations from lines subject to acoustic vibration. Isolating material for general galvanic separation requirements shall be PTFE. Proprietary insulated U-Bolts with Polyolefin or Neoprene coating, and Pipe Clamps with Comlin Gr. FR80, TICO HT/CL, or Company’s approved equivalent isolation clip strips are permissible. Proprietary isolation components may be substituted for the above materials with COMPANY approval. The isolation materials shall be suitable for service temperatures of -50°C to 200°C.
11.4 Low Friction Slide Units When installing low friction slide units care shall be taken to prevent excessive heat due to welding and the bearing surfaces shall be protected from weld splatter. Low friction sliding plates shall be used when advised by the Piping Stress Department or the Structural department. The effect of friction shall be calculated based on the following: Surface Friction factor Steel to steel 0.3 Steel to PTFE 0.1 PTFE to PTFE shall not be used.
12.
SPRING SUPPORT
Spring supports will be detailed out separately as special pipe supports, on separate datasheets, and are not included in the list of standard pipe supports. The spring vendor will supply spring units with all associated rods, turnbuckles, beam attachments clamps, pins etc, details of which shall be determined during procurement stage. Application of spring support shall be kept as mimum as possible. Pipe hangers are not permitted for any support application.
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13.
PIPE SUPPORT LOCATIONS
13.1 General Pipe-supports should be located as close as possible to heavy valves, strainers, orifice flanges, removable spools, etc. Pipe-support location, especially guides, linestops etc., shall not restrict flexibility of piping system to the point of over-stressing it. The location of spring supports shall ensure that load adjusters, load flanges, fixing bolts, etc. are accessible for adjustment or removal. Under no circumstances shall a pipe support be placed where it presents a hazard to personnel, also it is not permitted to encroach into escape routes. A clear head room of 2300 mm over all escape routes must be maintained. Pipe-supports shall not restrict withdrawal areas, equipment maintenance areas, or interfere with the installation or removal of maintenance blinds and spacers. Enough clearance shall be maintain above material handling route. Consideration shall be made for support deflections arising from load-out, transit or lift conditions. In general, temporary supports are to be avoided, however, if required are to be clearly identified (e.g. painted Signal Brown RAL8002), and removed prior to commissioning. In cases where the support may need to be removed to avoid overstressing the pipe during load-out etc, consideration of removable, or adjustable supports are to be considered (e.g. pipe clamps).
13.2 Structural Considerations Location of supports shall maximise the use of existing structure with additional structural members being kept to a minimum. Support loads and height exceeding the allowable limits defined in this sepcification shall be designed by Structure discipline. All pipe supports which transmit loads above 10 KN to a structural member shall be closely coordinated with Contractor’s Structural Department. Generally, the following are not allowed: Supports fixed to truss diagonals should in general be avoided. Supports which will cause torsion in the structural steel member. Supports onto un-stiffened deck plate.
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APPENDIX I – STANDARD PIPE SUPPORT INDEX Support Tag -
1305-YP-00-L-XO-02000
-
1305-YP-00-L-XO-02001
PS01 PS02
1305-YP-00-L-XO-02002 1305-YP-00-L-XO-02003
PS03
1305-YP-00-L-XO-02004
PS04
1305-YP-00-L-XO-02005
PS05
1305-YP-00-L-XO-02006
PS06 PS07 PS08
1305-YP-00-L-XO-02007 1305-YP-00-L-XO-02008 1305-YP-00-L-XO-02009
PS09
1305-YP-00-L-XO-02010
PS10
1305-YP-00-L-XO-02011
PS11
1305-YP-00-L-XO-02012
PS12
1305-YP-00-L-XO-02013
PS13
1305-YP-00-L-XO-02014
PS14 PS15
1305-YP-00-L-XO-02015 1305-YP-00-L-XO-02016
PS16
1305-YP-00-L-XO-02017
PS17
1305-YP-00-L-XO-02018
PS18
1305-YP-00-L-XO-02019
PS19
1305-YP-00-L-XO-02020
PS20
1305-YP-00-L-XO-02021
PS21
1305-YP-00-L-XO-02022
PS22
1305-YP-00-L-XO-02023
PS23
1305-YP-00-L-XO-02024
PS24
1305-YP-00-L-XO-02025
PS25
1305-YP-00-L-XO-02026
PS26
1305-YP-00-L-XO-02027
PS27
1305-YP-00-L-XO-02028
Dwg No.
Description PIPE SUPPORT STANDARDS - GENERAL NOTES PIPE SUPPORT STANDARDS - PIPE SUPPORT COLLECTION PIPE SUPPORT STANDARDS - PS01 `U' BOLT GUIDE PIPE SUPPORT STANDARDS - PS02 `U' BOLT ANCHOR PIPE SUPPORT STANDARDS - PS03 GRP/GRE WEAR PAD FOR GRP/GRE PIPE PIPE SUPPORT STANDARDS - PS04 PIPE SHOE PIPE SUPPORT STANDARDS - PS05 PIPE SHOESLOPING LINES PIPE SUPPORT STANDARDS - PS06 SADDLE PLATE PIPE SUPPORT STANDARDS - PS07 PIPE SHOE GUIDE PIPE SUPPORT STANDARDS - PS08 PIPE GUIDE PIPE SUPPORT STANDARDS - PS09 PIPE STOP - NS50 TO NS200 PIPE SUPPORT STANDARDS - PS10 PIPE STOP - NS250 TO NS900 PIPE SUPPORT STANDARDS - PS11 PIPE SHOE STOP PIPE SUPPORT STANDARDS - PS12 ELBOW SUPPORT GUIDE/FIXED PIPE SUPPORT STANDARDS - PS13 PIPE SHOE HOLD DOWN PIPE SUPPORT STANDARDS - PS14 PIPE HOLD DOWN PIPE SUPPORT STANDARDS - PS15 ELBOW SUPPORT PIPE SUPPORT STANDARDS - PS16 PEDESTAL SUPPORT (ADJUSTABLE) PIPE SUPPORT STANDARDS - PS17 DUMMY LEG PIPE SUPPORT STANDARDS - PS18 VERTICAL PIPE TRUNION PIPE SUPPORT STANDARDS - PS19 RISER CLAMP PIPE SUPPORT STANDARDS - PS20 VERTICAL PIPE STOP PIPE SUPPORT STANDARDS - PS21 VERTICAL PIPE GUIDE PIPE SUPPORT STANDARDS - PS22 FIRE MONITOR SUPPORT PIPE SUPPORT STANDARDS - PS23 BRACING FOR BRANCH CONNECTION PIPE SUPPORT STANDARDS - PS24 CANTILEVER PIPE SUPPORT STANDARDS - PS25 CANTILEVER BRACKET PIPE SUPPORT STANDARDS - PS26 INVERTED GOAL POST PIPE SUPPORT STANDARDS - PS27 GOAL POST
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Rev
Ghana OCTP Development Project OCTP Offshore FPSO Document no. : 1305-YP-00-L-SA-00002 Title : Pipe Support Specification Revision : A1
ENI Document ID Validity status Revision
: 351401….. : EX-DE : -__________
Support Tag
Dwg No.
PS28
1305-YP-00-L-XO-02029
PS29
1305-YP-00-L-XO-02030
PS30
1305-YP-00-L-XO-02031
PS31
1305-YP-00-L-XO-02032
PS32 PS33
1305-YP-00-L-XO-02033 1305-YP-00-L-XO-02034
PS34
1305-YP-00-L-XO-02035
PS35
1305-YP-00-L-XO-02036
PS36
1305-YP-00-L-XO-02037
PS37
1305-YP-00-L-XO-02038
PS38
1305-YP-00-L-XO-02039
PS39
1305-YP-00-L-XO-02040
PS40
1305-YP-00-L-XO-02041
PS41
1305-YP-00-L-XO-02042
PS42
1305-YP-00-L-XO-02043
PS43
1305-YP-00-L-XO-02044
PS44
1305-YP-00-L-XO-02045
PS45
1305-YP-00-L-XO-02046
PS46
1305-YP-00-L-XO-02047
PS47
1305-YP-00-L-XO-02048
PS48
1305-YP-00-L-XO-02049
PS49
1305-YP-00-L-XO-02050
PS50
1305-YP-00-L-XO-02051
PS51
1305-YP-00-L-XO-02052
Description PIPE SUPPORT STANDARDS - PS28 RIGHT ANGLE SUPPORT (WELDED) PIPE SUPPORT STANDARDS - PS29 INVERTED RIGHT ANGLE SUPPORT PIPE SUPPORT STANDARDS - PS30 RIGHT ANGLE SUPPORT PIPE SUPPORT STANDARDS - PS31 INVERTED `T' POST PIPE SUPPORT STANDARDS - PS32 `T' POST PIPE SUPPORT STANDARDS - PS33 POST PIPE SUPPORT STANDARDS - PS34 RIGHT ANGLE BRACKET PIPE SUPPORT STANDARDS - PS35 VALVE SADDLE SUPPORT NOT USED. PIPE SUPPORT STANDARDS - PS37 GUIDE FOR GRP/GRE PIPE PIPE SUPPORT STANDARDS - PS38 PLATE TRUNNION FOR GRP/GRE PIPE PIPE SUPPORT STANDARDS - PS39 GRP/GRE PIPE CLAMP SHOE PIPE SUPPORT STANDARDS - PS40 REINFORCEMENT PLATE FOR PIPE TRUNION PIPE SUPPORT STANDARDS - PS41 BOTH END WELDED BRACKET PIPE SUPPORT STANDARDS - PS42 CONSTANT SPRING HANGER PIPE SUPPORT STANDARDS - PS43 VARIABLE SPRING HANGER PIPE SUPPORT STANDARDS - PS44 GRP/GRE FLANGE RESTING SUPPORT PIPE SUPPORT STANDARDS - PS45 GRP/GRE FLANGE HOLD DOWN SUPPORT PIPE SUPPORT STANDARDS - PS46 GRP/GRE PIPE CLAMP & AXIAL STOP PIPE SUPPORT STANDARDS - PS47 PIPE CLAMP SHOE PIPE SUPPORT STANDARDS - PS48 SUPPORT FOR CU-NI PIPE PIPE SUPPORT STANDARDS - PS49 ELBOW SUPPORT HOLD DOWN PIPE SUPPORT STANDARDS – PS50 SMALL BORE VALVE SADDLE SUPPORT PIPE SUPPORT STANDARDS - PS51 PIPE REST SUPPORT
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Rev
Ghana OCTP Development Project OCTP Offshore FPSO Document no. : 1305-YP-00-L-SA-00002 Title : Pipe Support Specification Revision : A1
ENI Document ID Validity status Revision
: 351401….. : EX-DE : -__________
APPENDIX II – RECOMMENDED SPANS FOR PIPE Notes: 1. The data given below is applicable for: Carbon Steel pipes, STD wall and heavier, with maximum temperature of 200°C. Austenitic Stainless and Duplex steel pipes, schedule 10S and heavier, with a maximum temperature of 177°C. 2. Required reinforcing saddle plate as per PS06, refer to DWG No. 1305-YP-L-XO-02007 MASS PER METER OF STEEL PIPE FILLED WITH WATER. MASS OF PIPE AND WATER
MASS OF INSULATION PIPE WALL THICKNESS (mm) NOMINAL 200kg/m3 PIPE SIZE 50mm 25mm SCH SCH SCH SCH SCH SCH SCH SCH SCH SCH SCH XXS WT WT WT WT 25.4 30 40 50 THICK THICK 30 40S STD 40 60 80S XS 80 100 120 160
WT 60
INCH mm Kg/m Kg/m 1/2"
15
2.4
0.8
2
3
3/4"
20
2.4
0.8
3
4
1"
25
2.6
0.9
4
4
5
6
1 1/2" 40
3.1
1.2
7
7
8
10
2"
50
3.5
1.3
9
9
13
15
3"
80
4.4
1.8
20
20
25
30
4"
100
5.2
2.2
24
24
30
30
35
40
46
6"
150
6.9
3
47
47
60
60
70
81
91
112
8"
200
8.5
3.8
75
75
94
94 104 116 135 132
160
10"
250
10.1
4.7
111 111
130
142 158 174 209
216 259
12"
300
11.7
5.5
147 147
177 167
197 221 245 291
273 327 377
14"
350
12.7
6
170 182 210
237 269 295 345
310 371
16"
400
14.3
6.8
211 237 269
307 344 379 448
373 445
18"
450
15.9
7.6
271
256 300 343
20"
500
17.5
8.4
338
305
24"
600
20.7
10
475
416
28"
700
-
-
541
30"
750
-
-
611
859
32"
800
-
-
684
950 1025 1185 1340 1491
34"
850
-
-
762
1054 1125 1296 1462 1624
36"
900
-
-
842
1142 1227 1408 1586 1759
285 386 434
565
440 523 602
419
474 535
696
512 606 696
602
454 678 770
998
667 783 895 1002
588
Note : 1 Kg results in force of 9.807 newtons (N). : Mass of pipe fittings and valves not included
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781
837 975 1108 1238 929 1078 1222 1362
Ghana OCTP Development Project OCTP Offshore FPSO Document no. : 1305-YP-00-L-SA-00002 Title : Pipe Support Specification Revision : A1
ENI Document ID Validity status Revision
: 351401….. : EX-DE : -__________
PIPE SPACING PIPE SIZE 'W'(mm) INCH MM 2" 50 75 3" 80 75 4" 100 75 6" 150 75 8" 200 75 10" 250 90 12" 300 90 14" 350 90 16" 400 110 18" 450 110 20" 500 110 24" 600 160 28" 700 160 30" 750 160 32" 800 175 34" 850 175 36" 900 175
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Ghana OCTP Development Project OCTP Offshore FPSO Document no. : 1305-YP-00-L-SA-00002 Title : Pipe Support Specification Revision : A1
ENI Document ID Validity status Revision
: 351401….. : EX-DE : -__________
Maximum Span for horizontal Straight Pipe RECOMMENDED MAXIMUM SPANS FOR STRAIGHT RUN PIPES EXCLUDING FITTINGS – REFER NOTES (1)& 2) NOMINAL
INCH
8
3/4"
1"
1 1/2"
2"
3"
4"
6"
8"
10"
12"
PIPE SIZE
MM
15
20
25
40
50
80
100
150
200
250
300
STEEL PIPE (1)
SCH
80
80
80
80
40
40
40
40
40
40
STD
SPAN (M)
2.8
3
3.45
3.45
4.55
5.45
6
6.5
6.7
7.4
7.8
SCH
40s
40s
40s
40s
40s
10s
10s
10s
10s
10s
10s
SPAN (M)
2.8
3
3.45
3.45
4.3
4.95
5
5.1
5.2
5.65
6.05(2)
DUPLEX / SS (1) ALLOY 625 (1)
SCH
80s
80s
80s
80s
10s
10s
10s
10s
10s
40s
STD
SPAN (M)
3
3.3
3.7
4.4
5
5.9
6.5
7.5
8.5
10.4
11.1
NOMINAL
INCH
14"
16"
18"
20"
24"
28"
30"
32"
34"
36"
PIPE SIZE
MM
350
400
450
500
600
700
750
800
850
900
STEEL PIPE (1)
SCH
STD
STD
STD
STD
STD
STD
STD
STD
20
20
SPAN (M)
9.3
9.75
SCH
10s
10s
DUPLEX / SS (1)
SPAN (M) SCH
ALLOY 625 (1)
SPAN (M)
10.15 10.4(2) 10.95(2) 11.52(2) 11.79(2) 12.04(2) 12.88(2) 13.13(2) 10s
10s
10s
10s
6.3(2) 6.55(2) 6.75(2) 7.3(2) 8.05(2) 9.3(2) 10.31 11.91 11.4
12.4
10s 9.5(2)
10s
10s
10s
9.7(2) 10.0(2) 10.2(2)
40
40
40
-
-
-
-
-
13.3
13.9
15.2
-
-
-
-
-
SUPPORT SPANS FOR COPPER - NICKEL PIPE NOMINAL
INCH
3/4"
1"
1 1/2"
2"
3"
4"
6"
8"
10"
12"
14"
16"
PIPE SIZE
mm
20
25
40
50
80
100
150
200
250
300
350
400
2
2.25
2.5
3
3
3.75
4.5
5.25
6
6
6
6
MAX SPAN(m)
NOTE : THE MAX SPAN FOR COPPER-NICKEL PIPE IS BASED ON MANUFACTURERS RECOMMENDATION.
SUPPORT SPANS FOR GRP/GRE PIPE - AMERON 2000M SERIES & AMERON 7000M SERIES NOTE : THE MAX SPAN FOR GRP/GRE PIPE IS BASED ON MANUFACTURERS RECOMMENDATION.
Page 18 of 19
Ghana OCTP Development Project OCTP Offshore FPSO Document no. : 1305-YP-00-L-SA-00002 Title : Pipe Support Specification Revision : A1
ENI Document ID Validity status Revision
: 351401….. : EX-DE : -__________
APPENDIX III – STANDARD PIPE SUPPORT DETAILS (53 PAGES)
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