[Code of Federal Regulations]
[Title 29, Volume 8]
[Revised as of July 1, 2007]
From the U.S. Government Printing Office via GPO Access
[CITE: 29CFR1926.155]

[Page 208-209]
 
                             TITLE 29--LABOR
 
CHAPTER XVII--OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT 
                                OF LABOR
 
PART 1926_SAFETY AND HEALTH REGULATIONS FOR CONSTRUCTION--Table of Contents
 
                Subpart F_Fire Protection and Prevention
 
Sec. 1926.155  Definitions applicable to this subpart.

    (a) Approved, for the purpose of this subpart, means equipment that 
has been listed or approved by a nationally recognized testing 
laboratory such as Factory Mutual Engineering Corp., or Underwriters' 
Laboratories, Inc., or Federal agencies such as Bureau of Mines, or U.S. 
Coast Guard, which issue approvals for such equipment.
    (b) Closed container means a container so sealed by means of a lid 
or other device that neither liquid nor vapor will escape from it at 
ordinary temperatures.
    (c) Combustible liquids mean any liquid having a flash point at or 
above 140 [deg]F. (60 [deg]C.), and below 200 [deg]F. (93.4 [deg]C.).
    (d) Combustion means any chemical process that involves oxidation 
sufficient to produce light or heat.
    (e) Fire brigade means an organized group of employees that are 
knowledgeable, trained, and skilled in the safe evacuation of employees 
during emergency situations and in assisting in fire fighting 
operations.
    (f) Fire resistance means so resistant to fire that, for specified 
time and under conditions of a standard heat intensity, it will not fail 
structurally and will not permit the side away from the fire to become 
hotter than a specified temperature. For purposes of this part, fire 
resistance shall be determined by the Standard Methods of Fire Tests of 
Building Construction and Materials, NFPA 251-1969.
    (g) Flammable means capable of being easily ignited, burning 
intensely, or having a rapid rate of flame spread.
    (h) Flammable liquids means any liquid having a flash point below 
140 [deg]F.

[[Page 209]]

and having a vapor pressure not exceeding 40 pounds per square inch 
(absolute) at 100 [deg]F.
    (i) Flash point of the liquid means the temperature at which it 
gives off vapor sufficient to form an ignitable mixture with the air 
near the surface of the liquid or within the vessel used as determined 
by appropriate test procedure and apparatus as specified below.
    (1) The flash point of liquids having a viscosity less than 45 
Saybolt Universal Second(s) at 100 [deg]F. (37.8 [deg]C.) and a flash 
point below 175 [deg]F. (79.4 [deg]C.) shall be determined in accordance 
with the Standard Method of Test for Flash Point by the Tag Closed 
Tester, ASTM D-56-69.
    (2) The flash point of liquids having a viscosity of 45 Saybolt 
Universal Second(s) or more at 175 [deg]F. (79.4 [deg]C.) or higher 
shall be determined in accordance with the Standard Method of Test for 
Flash Point by the Pensky Martens Closed Tester, ASTM D-93-69.
    (j) Liquefied petroleum gases, LPG and LP Gas mean and include any 
material which is composed predominantly of any of the following 
hydrocarbons, or mixtures of them, such as propane, propylene, butane 
(normal butane or iso-butane), and butylenes.
    (k) Portable tank means a closed container having a liquid capacity 
more than 60 U.S. gallons, and not intended for fixed installation.
    (l) Safety can means an approved closed container, of not more than 
5 gallons capacity, having a flash-arresting screen, spring-closing lid 
and spout cover and so designed that it will safely relieve internal 
pressure when subjected to fire exposure.
    (m) Vapor pressure means the pressure, measured in pounds per square 
inch (absolute), exerted by a volatile liquid as determined by the 
``Standard Method of Test for Vapor Pressure of Petroleum Products (Reid 
Method).'' (ASTM D-323-58).