30 CFR § 75.1100-3
Condition and examination of firefighting equipment.
All firefighting equipment shall be maintained in a usable and operative
condition. Chemical extinguishers shall be examined every 6 months and the
date of the examination shall be written on a permanent tag attached to the
extinguisher.
[35 FR 17890, Nov. 20, 1970, as amended at 47 FR 14706, Apr. 6, 1982; 60 FR
33719, June 29, 1995]