Pennsylvania Code
Title 34 - LABOR AND INDUSTRY
Part I - Department of Labor and Industry
Chapter 14 - FLAMMABLE AND COMBUSTIBLE LIQUIDS; PRELIMINARY PROVISIONS
GENERAL PROVISIONS
Section 14.6 - Classes of flammable and combustible liquids
Universal Citation: 34 PA Code ยง 14.6
Current through Register Vol. 54, No. 38, September 21, 2024
(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.
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