distribution piping designed for 103 kPa (gage) 15 psig or lower and hot
water heating systems 207 kPa (gage) 30 psig or lower.
2.15.3
Materials
Suitable for the maximum pressure at the maximum temperature at which
equipment must operate.
2.15.3.1
Pipe Materials
a.
Steel Pipe:
(1) Steam Pipe, Boiler Feedwater Pipe, Relief Pipe and Steam
Tracer Pipe: Black, ASTM A 53 or ASTM A 106 seamless steel pipe,
Grade A or B. Wall thickness not less than Schedule 40. Steam
tracer pipe, with steam up to 103 kPa (gage) 15 psig, may be ASTM
B 88M ASTM B 88, Type K copper tubing.
(2) Condensate Pipe and Boiler Blowdown Pipe: Black, welded or
seamless ASTM A 53 or ASTM A 106, steel pipe, Grade A or B. Wall
thickness not less than extra strong (XS or Schedule 80).
(3) Chemical Feed Pipe:
ASTM A 312/A 312M austenitic stainless
steel.
(4) Fuel Oil Pipe:
ASTM A 53 or ASTM A 106, seamless black steel
pipe, Grade A or B.
(5) Treated Water, Hot Water Heating, High Temperature Water,
Drains (Other Than Sanitary), and Overflow Pipe: ASTM A 53 or
ASTM A 106, Grade A or B.
(6) Gas Pipe and Compressed Air Pipe:
ASTM A 53 or ASTM A 106,
Grade A or B.
b.
Copper Tubing:
(1) Instrument Air Pipe: ASTM B 88M ASTM B 88hard copper tubing,
Type K or L; except in a corrosive atmosphere or outside pipe
shall be copper tubing, Type K or L, with ASTM D 1047 PVC
jacketing.
(2) Steam Tracer Pipe: Contractor may provide ASTM B 88M ASTM B
88, Type K, copper tubing for steam up 103 kPa (gage) 15 psig.
(3) Potable Water, Sanitary Drains and Storm Drains: As
specified in Section 15400 PLUMBING SYSTEMS, unless otherwise
specified. Chlorinated polyvinyl chloride (CPVC) and other
plastic tubing and fittings shall not be used in the steam heating
plant.
2.15.3.2
Fittings
a.
Fittings for Steel Pipe:
(1) Sizes 6 to 50 mm 1/8 to 2 inches: ASME B16.3malleable iron,
screwed end fittings, for working pressures not greater than 2068
kPa (gage) 300 psig at temperatures not greater than 232 degrees C
450 degrees F or ASME B16.11 forged steel.
SECTION 15501N
Page 139
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