Click on the heading to access the searchable and printable pressure vessel database showing the current permit and inspection activities for all steam boilers, air tanks, and LPG tanks in the State of California.

A new inspection and permit for operation shall be required whenever there is a change of ownership and permanent location of the tank or there is an alteration or change in the tank which affects the tank's safety.

This request for a “Permit to Operate” your boiler, air tank, and/or LPG tank satisfies the requirements of the California Code of Regulations, Title 8, Chapter 4, Sections 461(a), 470(a), and 780(a).

Mar 17, 2014 · Cal/OSHA requires a permit if the air compressor tank is 1.5 cubic feet in volume or larger, OR when the safety valve is set greater than 150 pounds per square inch (psi). Tanks with less than 1.5 cubic feet of air AND less than 150 psi ARE EXEMPT.

Jan 10, 2025 · Section 461 - Permits to Operate (a) Except during the time that a request for a permit remains unacted upon or as permitted in Section 461 (f), no air tank shall be operated unless a permit to operate has been issued.

Each required Cal/OSHA permit to operate is posted under glass in visible place on or near the air tank or in a weatherproof container secured to the unit, and is available at all times to any qualified inspector.

The California Code of Regulations (CCR), title 8, section 341 and section 341.1 require employers to obtain Project Permits and Annual Permits from Cal/OSHA before conducting certain construction activities. 2 A Project Permit authorizes an employer serving as a Project Administrator to conduct permit-required activity at specific location(s ...

• Air tanks for compressors must have a permit from Cal/OSHA’s Pressure Vessel Unit –Exception air tanks with a volume less than 1 ½ cubic feet that have safety valves set to open at no more than 150 psi • Permit must be posted on or near tank • Permits expire - Reinspection required every 3 (portable tanks) or 5 years (fixed tanks)

A new inspection and permit for operation shall be required whenever there is a change of ownership and permanent location of the tank or there is an alteration or change in the tank which affects the tank 's safety.

The low air compressor plant shall be of sufficient capacity to not only permit the work to be done safely, but shall also provide a margin to meet emergencies and repairs.