Shielding requirements — California
X-ray shieldingrequirements in California.
Plain-language guidance for imaging facilities in California — what to file, who regulates it, and where a shielding design fits in the process.
The short answer
Register every radiation machine through the California portal within 30 days after acquisition. California assigns one FAC number to each physical facility address.
From our California registration guide
The usual order of operations
Shielding design before construction
A qualified physicist calculates every barrier — walls, floor, ceiling, doors, and windows — for your exact equipment, layout, workload, and adjacent occupancy.
Register with the state
Radiation machines are registered with the state radiation-control program, usually before or as operations begin.
Build and install per the design
Your contractor builds to the material specifications in the shielding report — no guesswork at the job site.
Plan review and final checks
Where the state or local authority requires it, the report goes in for plan review; a post-installation survey closes the loop where required.
Official California resources
Local guides in California
Project in California?
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Requirements change and vary by project. The current rules of the responsible radiation-control authority always control — we confirm them for your project as part of every design.