SPEC-3500 1/9 1.0 PURPOSE This specification describes the minimum requirements for service water piping systems (ie: cooling water, process water, etc.), located on surface. Note: This specification does not apply to piping for sprinkler systems, potable water, buried services or underground installations. 2.0 AND FITTINGS Design Condition Operating Conditions Design Fabrication Installation Approvals Pipe 150 PSIG @ 33 o F to 19 o F 100 PSIG @ 33 o F to 110 o F In accordance with this specification and SPEC-35002 Piping General Requirements CSA B51 Boiler, Pressure Vessel and Pressure Piping Code ASME B31.1 Power Piping Cold water piping systems are not subject to approval by regulatory agencies. 1 ½ " & Smaller Schedule 0 per ASME B36.10, carbon steel ASTM A53 Gr. B, ERW or seamless, threaded ends. 2" through 10" Schedule 0 per ASME B36.10, carbon steel ASTM A53 Gr. B, ERW or seamless, beveled ends. 12" through 16" 0.375" thick wall per ASME B36.10, carbon steel ASTM A53 Gr. B, ERW or seamless, beveled ends. 20" through 30" - 0.375" thick wall per ASME B36.10, carbon steel ASTM A139, Grade A or B, beveled ends.
SPEC-3500 2/9 1 ½ " & Smaller Fittings Class 150 malleable iron per ASME B16.3, ASTM A197, screwed and banded. 2" through 10" Schedule 0 per ASME B16.9, carbon steel ASTM A23 Grade WPB, butt weld. 12" & Above 0.375" thick wall per ASME B16.9, carbon steel ASTM A23 WPB, butt weld. Butt weld elbows to be long radius R = 1 1/2 x dia. unless otherwise noted. Branch Connections See Table 1 - Attach to run pipe by full penetration welds. 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 Weldolet, Extra strong per ASME B16.11 and MSS SP-97, forged carbon steel ASTM A105 Flanges 1 ½ " & Smaller Threaded type, raised face, Class 150 per ASME B16.5, forged carbon steel ASTM A105. Use flanges 1½ " and smaller only for connections to flanged equipment 2" through 2" Slip-on or welding neck type, raised face, Class 150 per ASME B16.5, forged steel ASTM A105. Bore of welding neck flanges to suit pipe ID. 26" through 30" Welding neck type, raised face, Class 150 per MSS SP-, forged carbon steel ASTM A105. Bore of welding neck flanges to suit pipe ID. Note: Flat faced flanges required at cast iron valves and flanges, for all sizes.
SPEC-3500 3/9 Threaded Joint Sealants Do not use wet sealants. Use teflon tape. Flanged Joints Gaskets Flange Bolting Welded Joints Unions Ball Valves 1/16" flat ring type for raised face inside bolts, non-asbestos, synthetic fibre, nitrile bonding. Dimensions per ASME B16.21. Full face gasket 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 Grade B, UNC threads with heavy hex nuts to ASTM A563 Grade A. Use Class 2A fit on bolts and 2B fit on nuts. Dimension per ASME B1.1, B18.2.1 and B18.2.2. Essential variables to be in accordance with SPEC-35003 for the welding procedure (WP) identified. All sizes WP1 1 ½ " & Smaller Class 150 per ASME B16.39, malleable iron ASTM A197, brass to brass seats, spherically ground joints, threaded ends to ASME B1.20.1. 1½ " & Smaller Class 00 minimum rating brass body and ball, stainless steel or brass stem, teflon seats, reinforced teflon seals, threaded ends to ASME B1.20.1. Valves to be lockable.
SPEC-3500 /9 2" through 6" Butterfly Valves Class 125 cast iron body wafer style for mounting between ASME Class 150 flanges, 316 stainless steel shaft and disc, EPDM 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. 8" & Above Same as above except shall have gear operator actuator and rated 150 PSIG minimum differential in closed position. Valves to be lockable. Notes: 1. Where slow opening characteristics are required for the above butterfly valves (to reduce the possibility of water hammer) replace the lever operator with optional gear operator 2. Lug style butterfly valves with through tapped holes to be used in dead end service or where line blinds are used for maintenance purposes. 3. Use Buna N seats where water is contaminated with oil, or where possibility of oil contamination exists. Gate Valves Globe Valves 2" & Above Class 125, flanged, iron body, bronze mounted, wedge disc, outside stem and yoke, rising stem. Valves to be lockable. 1 ½ " & Below Class 150, threaded, brass or bronze body, composition disc, inside screw. Valves to be lockable. 2" through 10" Class 125, flanged, iron body, bronze disc and seat, outside stem and yoke. Valves to be lockable. Check Valves 1 ½ " & Below Class 125, bronze swing check per ASTM B61 or B62, integral seat, bronze disc, screwed or union cap, threaded. 2" & Above Class 125, ductile iron body or cast iron body wafer style non-slam check valve, 316 stainless steel disc, Buna N seat, Inconel X or 316 SS spring. Safety Relief Valves Selection by the Engineer.
SPEC-3500 5/9 Pressure Reducing Valves Strainers Instrumentation Isolating Valves Selection by the Engineer. 1½ " & Below Class 250, iron body Y-Type strainer, screwed cap complete with blowoff connection and plug, 1/32" perforated stainless steel screen, threaded ends to ASME B1.20.1. 2" & Above Class 125, iron body Y-Type strainer, bolted cover complete with blowoff connection and plug, 1/32" perforated stainless steel screen, flanged ends to ASME B16.1. ½ " size ball valve, class 00, minimum rating brass body and ball, stainless steel or brass stem, teflon seats, reinforced teflon seals, threaded to ASME B1.20.1. Valves to be lockable. 3.0 TESTING Testing must meet the requirements of ASME B31.1 and PROC-83006 (hydrostatic testing) or SPEC- 3508 (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.0 EXAMINATION AND INSPECTION Examination and inspection must meet the requirements of ASME B31.1 and specific instructions in the scope of work. Minimum 100% visual examination for pressure welds or welds to pressure retaining components and a complete inspection. 5.0 PAINTING-PIPE SYSTEM CLASSIFICATION AND IDENTIFICATION The piping system shall be painted (classification) and labeled (identification) in accordance with SPEC-35001.
SPEC-3500 6/9
SPEC-3500 7/9 6.0 REFERENCE DOCUMENTATION The following documents were used in the development of this document or have instructions and procedures applicable to it. They shall be used in their most recent revision. SPEC-35001 SPEC-35002 SPEC-35003 SPEC-3508 PROC-83006 SPEC-11007 CSA B51 CSA Z180.1 ASME B31.1 ASTM A53 ASTM A23 ASTM A105 ASTM A106 ASTM B61 ASTM B62 ASTM F681 ASTM A139 ASTM A536 ASTM A563 ASTM D2000 ASTM A307 ASTM A179 ASTM A193 ASTM A19 ASME B16.1 Identification and Classification Piping General Requirements Welding Process Requirements Requirements for Pneumatic Testing of Piping Systems Hydrostatic Testing Buried Pipelines Water Boiler, Pressure Vessel and Pressure Piping Code Compressed Breathing Air and Systems Power Piping Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless Standard Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and High Temperature Service Standard Specification for Carbon Steel Forgings for Piping Applications Standard Specification for Seamless Carbon Steel Pipe for High Temperature Service Standard Specification for Steam or Valve Bronze Castings Standard Specification for Composition Bronze or Ounce Metal Castings Standard Practice for use of Branch Connections Standard Specification for Arc Welded Steel Pipe Standard Specification for Ductile Iron Castings Specification for Carbon and Alloy Steel Nuts Standard Classification System for Rubber Products in Automotive Application Specification for Carbon Steel Bolts and Studs, 60,000 PSI Tensile Strength Standard Specification for Seamless Cold-Drawn Low-Carbon Steel Heat- Exchanger and Condenser Tubes Standard Specification for Alloy Steel and Stainless Steel Bolting for High Temperature Service or High Pressure Service Standard Specification for Carbon Steel and Alloy Steel Nuts for Bolts for High Pressure or High Temperature Service or Both Gray Iron Pipe Flanges and Flange Fittings
SPEC-3500 ASME B16.3 Malleable Iron Threaded Fittings ASME B16.5 Pipe Flanges and Flanged Fittings ASME B16.9 Factory-Made Wrought Buttwelding Fittings ASME B16.11 Forged fittings Socket Welded and Threaded ASME B16.21 Nonmetallic Flat Gaskets for Pipe Flanges ASME B16.3 ASME B36.10 ASME B18.2.1 ASME B18.2.2 ASME B1.1 ASME B16.39 ASME B1.20.1 ASME B16.25 MSS SP- MSS SP-67 MSS SP-83 MSS SP-97 8/9 Valves Flanged, Threaded and Welding Ends Welded and Seamless Wrought Steel Pipe Square, Hex, Heavy Hex, and Askew Head Bolts and Hex, Heavy Hex, Hex Flange, Lobed Head, and Lag Screws (Inch Series) Nuts for General Applications: Machine Screw Nuts, Hex, Square, Hex Flange, and Coupling Nuts (Inch Series) Unified Inch Screw Threads Malleable Iron Threaded Pipe Unions Pipe Threads, General Purpose (Inch) Butt Welding Ends Steel Pipeline Flanges Butterfly Valves Class 3000 Steel Pipe Unions, Socket Welding and Threaded Integrally Reinforced Forged Branch Outlet Fitting
SPEC-3500 9/9 7.0 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 Rev 1 Description Specification updated and format and number revised. Previous number 3503-01.01.610 Rev 9 2 Approved for use in Thompson No Changes 3 Section 1: Reworded and added for clarity does not apply to underground installations. Section 3: Added some reference codes and/or standards Section : Changed Pressure Rating to Design Conditions, added temperature range to design and operating conditions. Added ASME B36.10 references to the Pipe Section. The lb. was removed from Class designations per ASME definition. Added ASME B16.11 and MSS SP-97 reference to Branch Connection section. Nuts and bolts to be the same across flats comment removed from Flange Bolting section as dimension will be as per code. Gasket section title replaced with Pipe Joint title and now includes welding section, flange bolts section and gasket section. Replaced incorrect SPEC-35002 with SPEC-35003 in Welded Joint section. Add full face gaskets required at flat face flanges. Changed pressure differential across 8 and Above Butterfly Valves from 200 PSIG to 150 PSIG, as this is Industry Standard. Section 5: Added table, added SPEC-3508 and PROC-83006 reference. Removed duplicate content that is in the SPEC or PROC. Section 6: Added Inspection to title. Added inspection criteria per code. Clarified examination requirements. Section 7: Changed section title for clarity. Revision by JB 2011/10/11 JB 2011/10/11 Approved by JB 2012/01/26 JB 2012/01/26 Issue Date YYYY/MM/ DD 2012/0/26 2012/08/09 M.Fogarty M.Fogarty 2015/12/23 Format updated Globe valve 1 ½ & smaller now brass or bronze Check valve 2 & above now ductile or cast iron body -spring materials now Inconel X or 316SS Butterfly valve Changed aluminum bronze disc to SS. M.Fogarty M.Fogarty