Chapter 1. Scope Of Chapter And General Provisions of California Labor Code >> Division 5. >> Part 6. >> Chapter 1.

"Division," as used in this part, means the Division of Occupational Safety and Health.
"Boiler" as used in this part means any fired or unfired pressure vessel used to generate steam pressure by the application of heat subject to this part.
"Tank" as used in this part, means any unfired pressure vessel, subject to this part, used for the storage of air pressure or liquefied petroleum gases; provided, however, that for the purpose of shop inspection, "tank" shall mean any unfired pressure vessel built according to the rules of any nationally recognized pressure vessel code.
This part applies to all boilers and tanks which are not specifically exempted in this chapter, or by the general safety orders of the division now in effect or which may be hereafter adopted.
The following tanks are not subject to this part:
  (a) Tanks under the jurisdiction or inspection of the United States government.
  (b) Air pressure tanks used in household domestic services.
  (c) Tanks of 1 1/2 cubic feet or less which are not subject to a pressure of more than 150 pounds per square inch.
  (d) Air pressure tanks supplied with air by the same air compressor which supplies air for the brakes of any motor vehicle or streetcar, which units of transportation are operated by any person, firm, or corporation subject to the jurisdiction of the United States Department of Transportation or the California Highway Patrol.
  (e) Tanks not subject to an internal or external pressure or more than 15 pounds per square inch, irrespective of size.
The following steam boilers are not subject to this part:
  (a) Boilers under the jurisdiction or inspection of the United States Government, and all other boilers operated by employers not subject to Division 4 of this code.
  (b) Boilers on which the pressure does not exceed 15 pounds per square inch.
  (c) Automobile boilers and boilers on road motor vehicles.
This part does not limit the authority of the division to prescribe or enforce general or special safety orders.