[Code of Federal Regulations]

[Title 30, Volume 1]

[Revised as of July 1, 2006]

From the U.S. Government Printing Office via GPO Access

[CITE: 30CFR18.25]



[Page 101]

 

                       TITLE 30--MINERAL RESOURCES

 

  CHAPTER I--MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR

 

PART 18_ELECTRIC MOTOR-DRIVEN MINE EQUIPMENT AND ACCESSORIES--Table of 

Contents

 

             Subpart B_Construction and Design Requirements

 

Sec.  18.25  Combustible gases from insulating material.



    (a) Insulating materials that give off flammable or explosive gases 

when decomposed electrically shall not be used within enclosures where 

the materials are subjected to destructive electrical action.

    (b) Parts coated or impregnated with insulating materials shall be 

heat-treated to remove any combustible solvent(s) before assembly in an 

explosion-proof enclosure. Air-drying insulating materials are excepted.