This specification describes the minimum requirements for piping systems for the following service: Plant air systems operating up to 125 PSIG.

Transcription

1 SPEC /11/0 1/9 1.0 APPLICATION This specification describes the minimum requirements for piping systems for the following service: Plant air systems operating up to 125 PSIG. Design Conditions Operating Conditions F Lowest rated component in system 125 temperature up to 140 F Design, Fabrication, Installation, Approval Requirements Piping Classification and Identification SPEC Identify and paint the piping system according to the requirements indicated on the project drawings or the scope of work. SPEC Piping General Requirements SPEC SPEC-3003 CSA B51 ASME B31.1 System Approvals Welding Process Requirements Pressure Piping and Vessels Quality Requirements Boiler, Pressure Vessel and Pressure Piping Code Power Piping Piping systems are subject to the approval of TSSA, Boilers and Pressure Vessels Safety Division. 2.0 MATERIALS 3/4 to 1 ½ Sch 0 per ASME B36.10, carbon steel ASTM A53 Gr. B or ASTM A106 Gr. B, ERW or seamless, grooved or plain ends. Pipe 2 to 10 Sch 40 per ASME B36.10, carbon steel ASTM A53 Gr. B or ASTM A106 Gr. B, ERW or seamless, grooved or plain ends. 12 to thick wall per ASME B36.10, carbon steel ASTM A53 Gr. B or A106 Gr. B, ERW or seamless, grooved or plain ends. Fittings 3/4 to 12 Ductile iron conforming to ASTM A536 Grade with grooved ends. Victaulic #10, #11, #12, #13 elbows, #20 Tees, #35 Crosses and #50, 51 Reducers, or Gruvlok 7050, 7051, 7052, 7053 elbows, 7060 Tees, 706 crosses and Fig reducer.

2 SPEC /11/0 2/9 Fittings (cont d) 14" to 16".375" thick wall carbon steel to ASTM A234 Gr WPB with grooved ends. Note: Elbows - Long Radius 1.5 D or 3 D, as indicated on project drawings. Victaulic #100 and #110, or Gruvlok 7050 LR and 7051 LR long radius elbows. Use: Threaded and socket weld half couplings, Class 3000 per ASME B16.11, forged carbon steel ASTM A105. Thredolet and sockolet, Class 3000 per ASME B16.11 and MSS SP-97, forged carbon steel ASTM A105. Branch Connections Weldolet, Extra strong per ASME B16.11 and MSS SP-97, forged carbon steel ASTM A105. Use ductile iron reducing tees with grooved ends or ductile iron tees with reducer fittings. Victaulic #25 or #29, or Gruvlok Fig reducing tees. Attachment to run pipe by full penetration welds. For connection type, see Appendix A Branch Connections 3/4" to 1 ½ Class 150 per ASME B16.5, forged carbon steel ASTM A105, threaded type, raised face. Use flanges 3/4" through 1 1/2" only for connections to flanged equipment. Flanges 2 to 16 Class 150, grooved pipe adapter flanges of ductile iron conforming to ASTM A536 Gr with flange manufacturer standard carbon steel fasteners and pressure responsive ASTM D2000 synthetic rubber (Buna N Nitrile) gasket. Victaulic Style 741 or Gruvlok Fig Victaulic Gr. T or Gruvlok Gr. T. 2 to 16 Class 150 per ASME B16.5, forged carbon steel ASTM A105, slip on or welding neck, raised face. Bore to match pipe ID. Note: Flat faced flanges required at flat faced cast iron equipment.

3 SPEC /11/0 3/9 Couplings 3/4" to 16" - Grooved mechanical type, cast segments of ductile iron conforming to ASTM A536 Gr with coupling manufacturer standard carbon steel fasteners and pressure responsive ASTM D2000 synthetic rubber (Buna N Nitrile) gasket. Victaulic Gr. T or Gruvlok Gr. T. Surface: Victaulic Style 77 or Gruvlok Fig flexible couplings. Victaulic Style 07 or Gruvlok fig rigid coupling. Underground: Victaulic Style 77 or Gruvlok Fig flexible couplings for mine development areas. Threaded Joint Sealant Flanged Joint Gaskets Flange Bolting Welded Joints Use Teflon Tape. Do not use wet sealants 1/16" thick ring type for raised face inside bolts, non-asbestos, synthetic fibre, nitrile bonding. Dimensions per ASME B Full face gaskets required at flat face flanges. Gasket dope is not permitted. Manufacturer's gasket material recommendation subject to Vale approval. Carbon steel bolts to ASTM A307 Gr. B, UNC threads with heavy hex nuts to ASTM A563 Gr. A. Use Class 2A fit on bolts and 2B fit on nuts. Dimensions per ASME B1.1, B1.2.1 and B Essential variables to be in accordance with SPEC for the welding procedure (WP) identified. All sizes WP1 2" and smaller Class 125 bronze swing check ASTM B62 or B61, integral seat, bronze disc, screwed or union cap, threaded to ASME B Check Valves 2 ½ and larger Ductile iron body non-slam check valve, aluminum bronze or ductile iron disc, Buna N seat, stainless steel or Inconel X spring. Minimum pressure rating 200 PSIG. Victaulic Series 716 or Gruvlok Series 700 check valves. 2 ½ and larger Class 125/150 ductile iron body wafer style non-slam check valve, bronze disc, Buna N seat, stainless steel or Inconel X spring.

4 SPEC /11/0 4/9 2" to 6" 150 PSIG rated ductile iron body wafer style for mounting between Class 150 ASME flanges, 316 stainless steel shaft and disc, Buna N seat, lever operated, rated 200 PSIG minimum differential in closed position, face to face dimensions in accordance with MSS SP-67. Valves to be lockable. 1 ½ to 6" Two piece body, integrally grooved for use in conjunction with grooved pipe systems, ductile iron body, Buna N seat, aluminum bronze or 316 stainless steel disc and shaft, lever operated, rated 200 PSIG minimum differential in closed position. Victaulic Series 700 or Gruvlok Series 7600 butterfly valves. Valves to be lockable. Butterfly Valves " and larger 150 PSIG rated ductile iron body wafer style for mounting between Class 150 ASME flanges, 316 stainless steel shaft and aluminum bronze disc, Buna N seat, gear operated, rated 150 PSIG minimum differential in closed position, face to face dimensions in accordance with MSS SP-67. Valves to be lockable. " to 12" Ductile iron body butterfly valve integrally grooved for use in conjunction with grooved pipe systems, Buna N seat, nickel plated or aluminum bronze disc, 316 stainless steel shaft, gear operated, rated 300 PSIG minimum differential in closed position. Victaulic VIC-300 or Gruvlok Fig butterfly valves. Valves to be lockable. Note: Use lug style butterfly valves with through tapped holes to be used in dead end service or where line blinds are required for maintenance purposes. Ball Valves 1 " and smaller 600 PSIG minimum rating, brass body and ball, stainless steel or brass stem, teflon seats, reinforced teflon seals, lockable lever handle screwed to ASME B Valves to be lockable. 1 ½ to PSIG minimum rating, ductile iron two piece body ball valve, chrome plated or stainless steel ball, Teflon seats and seals, lockable lever handle, integrally grooved ends. Victaulic Series 726 or Gruvlok Series 7500 ball valves. Valves to be lockable.

5 SPEC /11/0 5/9 Instrument Isolation Valves Safety Relief Valves Pressure Reducing Valves 1/2" Ball Valve Class 600. Minimum rating, brass body and ball, stainless steel or brass stem, teflon seats, reinforced teflon seals, threaded to ASME B Selection by Engineer Selection by Engineer 150 PSIG rated ball float type liquid drain trap, cast iron body and cap. Drain Traps Automatic drain valve 150 PSI rated, 110 volts, 60 cycle, single phase. 1 ½ and smaller Class 250 iron body Y-Type strainer, screwed cap complete with blow-off connection and plug, 1/32" perforated stainless steel screen, threaded ends to ASME B Strainers 2 to 300 PSIG minimum rating ductile iron Y-type strainer, bolted or coupling cover, complete with blow-off connection and plug, 1/16 to 1/ perforated stainless steel screen, integrally grooved ends. Victaulic Style 732 or Gruvlok Model 75G strainers. 2" and larger Class 150 cast steel body Y-Type strainer, bolted cover complete with blow-off connection and plug, 3/64 or 1/ perforated stainless steel screen, flanged ends to ASME B TESTING Testing must meet the requirements of ASME B31.1and PROC-3006 (hydrostatic testing) or SPEC (pneumatic testing - only at the discretion of the Engineer) and specific instructions in the scope of work. Test Pressure Duration Additional Requirements 225 PSIG Per Code None

6 SPEC /11/0 6/9 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 all sizes and thicknesses is required. 5.0 APPENDICES Appendix A: Branch Connections

7 SPEC /11/0 7/9 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 Revision Notes Document format and number changed due to Vale Engineering Document Program changes in Previous Standard number Rev. Approved for use in Thompson. Piping system approval requirements updated for Manitoba. Reference to SPEC-3003 corrected in Reference document section. No technical changes. Testing was corrected to reference B31.1 code compliance rather than B31.3 code compliance. Risk Code Approved by Reviewed by Issue Date YYYY/MM/DD --- AR BL 2012/04/ AR BL 2012/10/ AD BL 2012/11/ MDF MDF 2013/02/22 5 Approved for Thompson. --- MDF MDF 2013/04/22 6 See Rev 6 Notes Below --- MDF MDF 2015/05/14 7 See Rev 7 Notes Below --- MDF MDF 2015/0/ Review Reformatted Regional approvals removed - minor technical changes. A M.Fogarty A.Delost 2016/11/0

8 SPEC /11/0 /9 Rev 6 Notes Added some reference codes. Changed Pressure Rating to Design Conditions, added temperature range to design and operating conditions. Changed design conditions maximum temperature from 140 F to 149 F to be consistent with other specifications and changed operating conditions from 33 F to 140 F to temperature up to 140 F. The lb. was removed from Class designations per ASME definition. ANSI was removed from ANSI/ASME designations. Added ASME B16.11 and MSS SP-97 reference to Branch Connection section. Add full face gaskets required at flat face flanges. Added SPEC-3504 and PROC-3006 reference. Added inspection criteria per code. Clarified examination requirements. Rev 6 changes are applicable to any new installations and/or modifications to existing systems from this date forward. Rev 7 Notes Results from an investigation regarding an over-torquing failure of a Victaulic Style 75 coupling, the OEM states these couplings should not be exposed to sudden shock or blasting as in an underground mining environment. OEM preferred coupling is the Style 77. The Victaulic Style 75 and Gruvlok Fig 7000 have been removed from this specification and replaced with Victaulic Style 77 or Gruvlok Fig APPENDIX A: BRANCH CONNECTIONS Inches B R

9 SPEC /11/0 9/9 A N C H / / Inches /4 1/2 HEADER 1 = Equal Tee, D.I. grooved fitting 2 = Reducing Tee, D.I. grooved fitting 3 = Threaded Half Coupling 4 = Threadolet, Sockolet, Weldolet, as indicated on project drawings 5 = Straight or reducing tee with grooved reducer, D.I. grooved fittings 6 = Outlet coupling with integral reducing outlet, grooved or threaded outlet, Victaulic Style 72 coupling or equal 7 = Fabricated tee with grooved ends