[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: 30CFR27.41]

[Page 147]
 
                       TITLE 30--MINERAL RESOURCES
 
  CHAPTER I--MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR
 
PART 27--METHANE-MONITORING SYSTEMS--Table of Contents
 
                      Subpart C--Test Requirements
 
Sec. 27.41  Test to determine resistance to moisture.

    Components, subassemblies, or assemblies, the normal functioning of 
which might be affected by moisture, shall be tested in atmospheres of 
high relative humidity (80 percent or more at 65 deg.-75  deg.F.) for 
continuous operating and idle periods of 4 hours each. The component or 
subassembly or assembly shall function normally after being subjected to 
those tests.