[Code of Federal Regulations]
[Title 27, Volume 7]
[Revised as of July 1, 2002]
From the U.S. Government Printing Office via GPO Access
[CITE: 29CFR1917.24]

[Page 195]
 
                             TITLE 29--LABOR
 
CHAPTER XVII--OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT 
                          OF LABOR (CONTINUED)
 
PART 1917--MARINE TERMINALS--Table of Contents
 
                  Subpart B--Marine Terminal Operations
 
Sec. 1917.24  Carbon monoxide.

    (a) Exposure limits. The carbon monoxide content of the atmosphere 
in a room, building, vehicle, railcar, or any enclosed space shall be 
maintained at not more than 50 parts per million (ppm) (0.005%) as an 
eight hour average area level and employees shall be removed from the 
enclosed space if the carbon monoxide concentration exceeds a ceiling of 
100 ppm (0.01%).
    (b) Testing. Tests to determine carbon monoxide concentration shall 
be made when necessary to ensure that employee exposure does not exceed 
the limits specified in paragraph (a) of this section.
    (c) Instrumentation. Tests for carbon monoxide concentration shall 
be made by designated persons using gas detector tube units certified by 
NIOSH under 30 CFR part 11 or other measuring instruments whose accuracy 
is as great or greater.
    (d) Records. A record of the date, time, location and results of 
carbon monoxide tests shall be available for at least thirty (30) days.

[48 FR 30909, July 5, 1983, as amended at 49 FR 28551, July 13, 1984; 61 
FR 5509, Feb. 13, 1996; 62 FR 40197, July 25, 1997]