[Code of Federal Regulations]
[Title 30, Volume 1]
[Revised as of July 1, 2002]
From the U.S. Government Printing Office via GPO Access
[CITE: 30CFR57.4462]

[Page 327]
 
                       TITLE 30--MINERAL RESOURCES
 
  CHAPTER I--MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR
 
PART 57--SAFETY AND HEALTH STANDARDS--UNDERGROUND METAL AND NONMETAL MINES--Table of Contents
 
                 Subpart C--Fire Prevention and Control
 
Sec. 57.4462  Storage of combustible liquids underground.

    The requirements of this standard apply to underground areas only.
    (a) Combustible liquids, including oil or grease, shall be stored in 
non-glass containers or storage tanks. The containers or storage tanks 
shall be--
    (1) Capable of withstanding working pressures and stresses and 
compatible with the type of liquid stored;
    (2) Maintained in a manner that prevents leakage;
    (3) Located in areas free of combustible materials or in areas where 
any exposed combustible materials are coated with one inch of shotcrete, 
one-half inch of gunite, or other noncombustible material with 
equivalent fire protection characteristics; and
    (4) Separated from explosives or blasting agents, shaft stations, 
and ignition sources including electric equipment that could create 
sufficient heat or sparks to pose a fire hazard. Separation shall be 
sufficient to prevent the occurrence or minimize the spread of fire.
    (b) Storage tanks shall be vented or otherwise constructed to 
prevent development of pressure or vacuum as a result of filling, 
emptying, or atmospheric temperature changes. Vents for storage of Class 
II or IIIA liquids shall be isolated or separated from ignition sources.
    (c) At permanent storage areas for combustible liquids, means shall 
be provided for confinement or removal of the contents of the largest 
storage tank in the event of tank rupture.
    (d) All piping, valves, and fittings shall be:
    (1) Capable of withstanding working pressures and stresses;
    (2) Compatible with the type of liquid stored; and
    (3) Maintained in a manner which prevents leakage.