insulation are:
Rock Wool - 75 percent slag by weight
Fiberglass - 20-25 percent glass cullet by weight
Phenolic Rigid Foam - 5 percent recovered material
Plastic Rigid Foam - 9 percent recovered material
Polyisocyanurate/Polyurethane - 9 percent recovered material
Rigid Foam - 9 percent recovered material
PART 2
PRODUCTS
2.1
PIPING INSULATION
Products containing asbestos will not be permitted.
2.1.1
Fibrous Glass Pipe Insulation
ASTM C 547.
2.1.2
Mineral Fiber Pipe Insulation
ASTM C 547.
2.1.3
Calcium Silicate Pipe Insulation
ASTM C 533.
2.1.4
Cellular Glass Pipe Insulation
ASTM C 552.
2.1.5
Polyurethane and Polyisocyanate Pipe Insulation
ASTM C 59/C 59M1, minimum density of 27.20 kilograms per cubic meter (kg/cu
m) 1.7 pcf.
2.1.6
Mineral Fiber Pipe Wrap Insulation
ASTM C 547 for material, minimum density of 36.80 kg/cu m 2.3 pcf.
2.2
MINIMUM THICKNESS OF INSULATION FOR STEAM PIPING
2.2.1
Fibrous Glass Pipe Insulation
Nominal
Aboveground Piping
Piping in Trenches on Piers
Pipe Sizes
Insulation Thickness
Insulation Thickness
(mm)
(mm)
(mm)
____________
____________________
___________________________
less than 80
88.90
63.50
80 thru 100
101.60
76.20
125 thru 150
114.30
88.90
200 and larger
127.00
101.60
SECTION 15081N
Page 6
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