Philadelphia Code Subcode B, § 202 DEFINITIONS
SECTION 202 DEFINITIONS
[Add the following definition]
COOL ROOF RATING COUNCIL (or CRRC): The Cool Roof Rating Council, Inc., an American National Standards Institute-accredited standards developer organization that created, maintains, and updates the ANSI/CRRC S100 standard, entitled “Standard Test Methods for Determining Radiative Properties of Materials.”
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[Delete the definition of Flammable Gas and replace as follows:]
[F] FLAMMABLE GAS. A material that is a gas at 68°F (20°C) or less at 14.7 pounds per square inch atmosphere (psia) (101 kPa) of pressure [a material that has a boiling point of 68°F (20°C) or less at 14.7 psia (101 kPa)] subdivided as follows:
1. Category 1A. A gas that meets either of the following:
a. Ignitable at 14.7 psia when in a mixture 13 percent or less by volume with air.
b. A flammable range at 14.7 psia (101kPa) with air of at least 12 percent, regardless of the lower limit, unless data shows compliance with Category 1B.
2. Category 1B. A gas that meets the flammability criteria for Category 1A, is not pyrophoric or chemically unstable, and meets one or more of the following:
a. A lower flammability limit of more than 6 percent by volume in air; or
b. A fundamental burning velocity of less than 3.9 in/s (10 cm/s)
The limits specified shall be determined at 14.7 psi (101 kPa) of pressure and a temperature of 68°F (20°C) in accordance with ASTM E681.
Where not otherwise specified, the term “flammable gas” includes both Category 1A and Category 1B.
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