[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: 30CFR36.48]

[Page 176-177]
 
                       TITLE 30--MINERAL RESOURCES
 
  CHAPTER I--MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR
 
PART 36--APPROVAL REQUIREMENTS FOR PERMISSIBLE MOBILE DIESEL-POWERED TRANSPORTATION EQUIPMENT--Table of Contents
 
                      Subpart C--Test Requirements
 
Sec. 36.48  Tests of surface temperature of engine and components of the cooling system.

    (a) The surface temperatures of the engine, exhaust cooling system, 
and other components subject to heating

[[Page 177]]

by engine operation shall be determined with the engine operated as 
prescribed by MSHA. All parts of the engine, cooling system, and other 
components shall have reached their respective equilibrium temperatures. 
The exhaust cooling system shall be operated, but air shall not be 
circulated over the engine or components. Surface temperatures shall be 
measured at various places prescribed by MSHA to determine where maximum 
temperatures develop.
    (b) The temperature of any surface shall not exceed 400  deg.F.
    Note to Sec. 36.48: The engine may be operated under test conditions 
prescribed by MSHA while completely surrounded by a flammable mixture. 
MSHA reserves the right to apply combustible materials to any surface 
for test. Operation under such conditions shall not ignite the flammable 
mixture.

[Sched. 31, 26 FR 645, Jan. 24, 1961, as amended at 61 FR 55526, Oct. 
25, 1996]