This specification, applies at any Vale locations indicated with approval on the cover page, with the following exceptions:

Transcription

1 1/5 1.0 PURPOSE This specification describes the minimum requirements for cold potable water plumbing systems within buildings. 2.0 APPLICATION This specification, applies at any Vale locations indicated with approval on the cover page, with the following exceptions:.0 REFERENCE DOCUMENTATION The following documents are related to this specification and shall be used to their latest revision: ANSI/ASME B16.15 Cast Bronze Threaded Fittings, Classes 125 and 250 ANSI/ASME B16.18 Cast Copper Alloy Solder Joint Pressure Fittings ANSI/ASME B16.22 Wrought Copper and Copper Alloy Solder Joint Pressure Fittings. ANSI/ASME B16.24 Cast Copper Alloy Pipe Flanges and Flanged Fittings, Class 150, 00, 400, 600, 900, 1500 and ANSI/NSF 61 Drinking Water System Components. ASTM A 07 Standard Specification for Carbon Steel Bolts and Studs, 60,000 PSI Tensile Strength. ASTM A56 Standard Specification for Ductile Iron Castings. ASTM B 88M Standard Specification for Seamless Copper Water Tube (Metric). ASTM F 492 Standard Specification for Propylene and Polypropylene (PP) Plastic- Lined Ferrous Metal Pipe Fittings ASTM B828 Making Capillary Joints by Soldering of Copper and Copper Alloy Tube and Fittings AWWA C111 Rubber-Gasket Joints for Ductile-Iron Pressure Pipe and Fittings. AWWA C606 Grooved and Shouldered Joints. CSA B242 Groove and Shoulder Type Mechanical Pipe Couplings. MSS-SP-67 Butterfly Valves MSS-SP-70 Cast Iron Gate Valves, Flanged and Threaded Ends. MSS-SP-71 Cast Iron Swing Check Valves, Flanged and Threaded Ends. MSS-SP-80 Bronze Gate, globe, Angle and Check Valves NRCC 8728 National Plumbing Code of Canada (NPC) OBC Part 7 Building Code Part 7 Plumbing

2 2/5 4.0 PIPING AND FITTINGS Operating Conditions 80 Ambient Temperature. Maximum Operating Pressure 100 Ambient Temperature Design Fabrication Installation Testing Design, fabricate, install and test piping in accordance with the Building Code (O.Reg.50/06) Part 7 Plumbing as amended to date. Use material only of the types contained in this specification. Pipe 4" & Below - Seamless copper tube type L to ASTM B88 Fittings " & Below- Solder joint wrought copper pressure type, ANSI B Branches Use tees or reducing tees only for all branches Flanges Copper Tube - Solder type bronze 150 lb. companion flange, ANSI B Gaskets 1/16" thickness ring type full face EPDM Rubber. Flange Bolting Brass machine bolts with hex nuts, ASTM F468 06e1 Standard Specification for Nonferrous Bolts, Hex Cap Screws, and Studs for General Use. Unions Copper Tube - Solder joint cast bronze pressure type, ANSI B Dielectric Unions 2" & Below - Female iron pipe thread to copper solder joint - "CORRPRO" or "Watts". Dielectric Flange Unions " - Brass half union with bolt insulators, dielectric gasket bolts and nuts, solder joint - "CORRPRO" or "Watts".

3 /5 Ball Valves " & Below - 00 PSI W.O.G. with bronze body, SS Ball and Stem, PTFE stem packing seal, thrust washer and seats and solder joint ends. Watts FBVS--SS ½ to 2 Watts FBVS- for 2.5 & Crane 902S Globe Valves " & Below PSI W.O.G. with bronze body and solder joint ends. Jenkins No. 106 BP Crane No. 110 (Up to 2" only) Kitz 10; Red White 222; N-H 14 Check Valves " & Below PSI C.W.P. with bronze body and disc, solder joint ends. Jenkins No. 409 Crane No. 142 Kitz 29; Red White 28; N-H 47 Shock Absorbers Zurn "Shoktrol" water hammer arrestors, Z-1700 series, sized in accordance with the manufacturer's selection tables for the pipe size and length of pipe involved as determined by measuring from the last fixture on the branch piping, back to the point where the pipe size increases by at least 2 sizes. Install shock absorbers at each plumbing fixture or bank of plumbing fixtures. Equivalent water hammer arrestors as manufactured by "Watts" are acceptable. Sediment Strainers Y-pattern, bronze body, with monel screen clean out plug and screwed ends. Sarco Type SB. or Watts 777 or S777 Sediment Faucets /4" bronze body with male I.P.T. inlet, hose thread outlet. Watts SC8-1 Soldered Joints Solder 95/5 Tin-antimony, ASTM B2-95TA or 96/4 tin-silver, ASTM B2-96TS. The use of core solder is not permitted. Solder joints to be made in accordance with ASTM B828 Making Capillary Joints by Soldering of Copper and Copper Alloy Tube and Fittings.

4 4/5 Testing Hydrostatic test all lines in accordance with the requirements of Building Code Part 7 paragraph Testing of Potable Water Systems. Perform testing in the presence of the Vale Representative. Notify Vale at least 48 hours prior to testing. Flushing and Disinfection Provide bleed-off connections in piping system and flush system with potable water until turbidity-free flow is obtained. Maintain a minimum line velocity of 8 ft./sec. Disinfect piping system by applying an initial aqueous solution of 25 mg/l minimum chlorine residual throughout system. If residual chlorine is less than 10 mg/l after 24 hours, re-disinfect the system. Contact Vale Environmental Technician responsible for the plant where the work is being done to have samples analyzed. After disinfection, drain and flush line until chlorine residual is less than 1 mg/l. During draining and flushing procedure, take bacteriological samples. Do not put line into service until samples indicate no coliform bacteria are present. In order to prevent re-infection of line, put line into service as soon as possible after disinfection. Coordinate scheduling of flushing and disinfection with the Vale Representative to ensure sufficient lead time for the performance of laboratory test work and to witness task.

5 5/5 5.0 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 Revision Notes Risk Code Approved by Reviewed by Issue Date YYYY/MM/DD Document format and number changed. Previous number BM BM 2012/09/28 2 Reviewed No Change --- BM BM 201/10/02 Updated Code References A B. Morris C. Seiler