Current through Register Vol. 54, No.43, October 26, 2024
Section 14.6 - Classes of flammable and combustible liquids(a) Flammable liquids shall be divided into the following classes: (1) Class I liquids include those having flash points below 100°F and may be subdivided as follows: (i) Class IA includes those having flash points below 73°F and having a boiling point below 100°F.(ii) Class IB includes those having flash points below 73°F and having a boiling point at or above 100°F.(iii) Class IC includes those having flash points at or above 73°F and below 100°F.(b) Combustible liquids shall be subdivided as follows:(1) Class II liquids include those having flash points at or above 100°F and below 140°F.(2) Class III liquids include those having flash points at or above 140°F and below 200°F.(c) The volatility of liquids is increased when heated to temperatures equal to or higher than their flash points. When so heated, class II and class III (combustible liquids) shall be subject to the applicable requirements for class I and class II liquids. This subpart may also be applied to high flash point liquids, which otherwise would be outside of the scope when they are so heated.The provisions of this § 11.6 adopted October 12, 1971, effective 10/23/1971, 1 Pa.B. 2018; amended June 22, 1984, effective 6/18/1984, 14 Pa.B. 2131; transferred from 37 Pa. Code and renumbered as 34 Pa. Code §14.6, February 28, 2014, effective 3/1/2014, 44 Pa.B. 1233.