This specification describes the minimum requirements for piping systems for the following service:

Transcription

1 1.0 APPLICATION 1/8 This specification describes the minimum requirements for piping systems for the following service: Gland Water Design Condition Operating Conditions F 0 to 5 35 F to 150 F Design, Fabrication, Installation, Approval Requirements ASME B31.1 SPEC SPEC-3500 SPEC SPEC System Approvals Power Piping Piping Classification and Identification Identify and paint the piping system according to the requirements indicated on the project drawings or the scope of work. Do Not Paint stainless steel components. Piping General Requirements Welding Process Requirements Pressure Piping and Vessels Quality Requirements Not regulated Note: Gland water systems are to be constructed either of Carbon Steel or Stainless Steel. Mixing of piping materials is not permitted..0 MATERIALS 1 ½ and smaller Carbon Steel: Sch. 80, Carbon Steel per ASTM A53, Gr. B, ERW or Seamless, T&C ends. Stainless Steel: Sch. 80S, Stainless Steel ASTM A31 Gr. TP316L, ERW or Seamless, T&C ends. Pipe to 10 Carbon Steel: Sch. 40, Carbon Steel per ASTM A53, Grade B, ERW or Seamless, bevelled ends. Stainless Steel: Sch. 40S, Stainless Steel ASTM A31 Grade TP316L, ERW or Seamless, bevelled ends.

2 /8 1 ½ and smaller Carbon Steel: Class 3000 per ASME B16.11, Forged carbon steel, ASTM- A105, threaded Fittings Stainless Steel: Class 3000, per ASME B16.11, Forged stainless steel ASTM A18 Gr. F316L, threaded to 10 Carbon Steel: Sch 40 per ASME B16.9, wrought carbon steel, ASTM A34 Gr. WPB, butt weld Stainless Steel: Sch 40S per ASME B16.9, wrought stainless steel, ASTM A403 Gr. WP316L seamless or welded fittings, butt weld For connection type, see Appendix A Branch Connections - Attachment to run pipe by full penetration welds. Branch Connections Threaded and Socket Weld half couplings - Class 3000 per ASME B16.11 Sockolet, Class 3000 per ASME B16.11 and MSS SP-97 Weldolet, Extra Strong per ASME B16.11 and MSS SP-97 For Carbon Steel: Use forged carbon steel ASTM A105 For Stainless Steel: Use forged stainless steel ASTM A18, Gr. F316L 1 ½ and smaller Carbon Steel: Class 300 per ASME B16.5, Threaded, raised face, forged carbon steel ASTM A105 Stainless Steel : Class 300 per ASME B16.5, Threaded, raised face, forged stainless steel ASTM A18 Gr. F316L. Flanges to 10 Carbon Steel: Class 300 per ASME B16.5, Slip on or welding neck, raised face, forged carbon steel ASTM A105. Stainless Steel : Class 300 per ASME B16.5, Slip on or welding neck, raised face, forged stainless steel ASTM A18 Gr. F316L. Note : Bore of welding neck flange to suit pipe I.D.

3 3/8 Threaded Joint Sealant Flange Bolting Unions 1 and smaller - Teflon dope Larger than 1 - Teflon tape Carbon steel piping. Alloy steel bolts ASTM A193 Gr. B7 UNC threads with heavy series hex nuts, ASTM A194 Gr. H, with Class A fit on bolts and Class B fit on nuts. Dimensions to ASME B18..1, and ASME B18... Stainless steel piping. Stainless steel bolts ASTM A193 Gr. B8M with heavy series hex nuts, ASTM A194 Gr. 8MA with class A fit on bolts and B fit on nuts. Dimensions to ASME B18..1, and ASME B ½ and smaller: Carbon Steel: Class 3000, Forged carbon steel per ASTM A105, steel to brass seats, ground joint, MSS SP83, threaded ends per ASME B Stainless Steel: Class 3000, Forged carbon steel per ASTM A18 Gr F316L, per MSS SP83 to brass seats, ground joint, MSS SP83, threaded ends per ASME B ½ and smaller: Carbon Steel: Class 800, Forged steel body per ASTM A105, 13% chrome trim, OS&Y. Screwed to ASME B Valves to be lockable. Stainless Steel: Class 800, Forged stainless steel body per ASTM A18 F316, OS&Y. Screwed to ASME B Valves to be lockable. Gate Valves to 10 : Carbon Steel: Class 300, Forged or Cast steel body to ASTM A105 or A16, 13% chrome trim, OS&Y. Flanged ends per ASME B16.5. Valves to be lockable. Stainless Steel: Class 300, Forged or Cast stainless steel to A18 F316 or A351 CF8M, OS&Y. Flanged ends per ASME B16.5. Valves to be lockable. 1 ½ & below: Globe Valves Carbon Steel: Class 800, Forged carbon steel body to ASTM A105, 13% chrome trim, OS&Y. Screwed to ASME B Valves to be lockable. Stainless Steel: Class 800, Forged or Cast stainless steel body per ASTM A18 F316 or A351 CF8M, OS&Y. Screwed to ASME B Valves to be lockable.

4 to 10 : 4/8 Globe Valves (cont d) Carbon Steel: Class 300, cast steel body to A16, 13% chrome trim, OS&Y. Flanged ends per ASME B16.5. Valves to be lockable. Stainless Steel: Class 300, cast stainless steel to ASTM A351 CF8M, OS&Y. Flanged ends per ASME B16.5. Valves to be lockable. 1 1/" and smaller: Carbon Steel: Class 800, Forged carbon steel body to ASTM A105, 316 stainless trim. Screwed to ASME B Stainless Steel: Class 800, Forged stainless steel body to ASTM A18 F316. Screwed to ASME B Check Valves " to 10": Carbon Steel: Class 300, Forged or Cast carbon steel body to ASTM A105 or ASTM A16, 316 stainless trim. Flanged ends per /ASME B16.5. Stainless Steel: Class 300, Forged or Cast stainless steel body to ASTM A18 F316 or A351 CF8M. Flanged ends per ASME B16.5. **Note: Engineer to select style (I.e. Swing, Ball, etc) " to 10": Carbon Steel: Class 300, Carbon steel body, 316SS disc, 17-4PH shaft. Flanges per ASME B16.5. Face to face dimensions in accordance with MSS SP-68. Valve internals to be rated at or above 50 PSIG in the closed position. Valves to be lockable. Butterfly Valves Stainless Steel: Class 300, Forged or Cast stainless steel body, ASTM A18 F316 or A351 CF8M, 316 stainless steel shaft and disc. Face to face dimensions in accordance with MSS SP-68. Flanged ends per ASME B16.5. Valve internals to be rated at or above 50 PSIG in the closed position. Valves to be lockable. ***Valve to be supplied with lever operators for sizes up to 4, and with gear operators for sizes 6 and greater. Ball Valves 1 ½ and smaller: Carbon Steel: Minimum 600 PSI rated, Threaded, Carbon Steel body,

5 5/8 316SS trim, full port opening, PTFE seats and seals. Threaded ends per ASME B Valves to be lockable. Stainless Steel: Minimum 600 PSI rated, Threaded, Stainless Steel body, ball and stem, full port opening, PTFE seats and seals. Threaded ends per ASME B Valves to be lockable. 1/": Instrument Isolation Valves Gaskets Tubing Tube Fittings Pressure Gauges Pressure Relief Valves Pressure Reducing Valves Welding Carbon Steel: 600 PSI minimum rating carbon steel body per ASTM A105, 316SS trim, full port opening. PTFE seats and seals. Threaded ends per ASME B Valves to be lockable. Stainless Steel: 600 PSI minimum rating stainless steel ball valve ASTM A351, Gr. CF8M, 316SS ball and stem, full port opening, reinforced teflon seats and stem seals, lever operated, screwed to ASME B Valves to be lockable. 1/16" thick flat ring type, inside bolts, non asbestos, synthetic fibre, nitrile binder, gasket dope not permitted. ASTM F37 sealability 0.3 ml/hr. or better Dimensions per ASME B16.1. Durlon 8500, Klinger SIL C4401, or Vale approved equal. Carbon Steel: Cold drawn seamless carbon steel per ASTM A179, hardness 7 HRB max., plain ends, wall thickness to meet minimum pressure rating of 500 PSIG. Stainless Steel: Cold drawn seamless stainless steel per ASTM A69, hardness 90 HRB max., plain ends, wall thickness to meet minimum pressure rating of 500 PSIG. Minimum of 1500 PSIG rated compression mechanical fittings, ferrule type (flareless). 4 diameter, liquid filled, PSIG range, ½ NPT connection, stainless steel case. Selection by the Engineer Selection by the Engineer Carbon Steel: Essential variables to be in accordance with Vale SPEC- 3500, WP-1 Stainless Steel: Essential variables to be in accordance with Vale SPEC- 3500, WP-4

6 6/8 3.0 TESTING Testing must meet the requirements of ASME B31.1 and PROC (hydrostatic testing) and specific instructions in the scope of work. Test Pressure Duration Additional Requirements 375 PSIG None 4.0 EXAMINATION AND INSPECTION Examination and inspection must meet the requirements of ASME B31.1 and specific instructions in the scope of work. 100% visual examination for pressure welds or welds to pressure retaining components and a complete inspection of the system. 5.0 APPENDICES Appendix A: Branch Connections

7 7/8 6.0 REVISION AND TRANSITION NOTES Revision notes describe: what was changed, and if applicable, why it was changed, and the plan to implement the change, including whether changes are retroactive. Note: The revision notes are a summary of the changes and may not necessarily be a complete list. A risk code is entered for each revision and if applicable, the revision notes will describe how risk was addressed for the revision. Risk Code A Risk Category This revision is a minor change and/or introduces no risk. B C Risk has been addressed for this revision by the reviewer and approver. Low risk or no new hazards identified. For this revision, a PHR or other risk management tool has been used to address risk and minimize hazards. This risk assessment has been documented and is available through Central Engineering. Rev 1 Specification Created Revision Notes Risk Code Approved by Reviewed by Issue Date YYYY/MM/DD --- BML BML 013/11/9 016 Review Reformatted Regional approvals removed - minor technical changes A M.Fogarty B.Morris

8 8/8 APPENDIX A: BRANCH CONNECTIONS Inches B R A N C H / / Inches /4 1/ HEADER 1 = Equal Tee = Reducing Tee or Equal Tee with Reducer 3 = Threaded Half Coupling 4 = Weldolet