Inspection during construction: Shielding should be inspected by the facility RSO or designee during installation to assure that it is installed according to specifications. Deficiencies shall be corrected prior to operation of the facility. After construction, the attenuation of shielding can be verified using a radiation source. Attenuation measurements can be used to determine the overall effectiveness of shielding, but cannot easily find small voids in the shielding.
Radiation survey before use of a radiation source: A radiation survey of adjacent controlled and uncontrolled areas shall be conducted by the facility RSO or designee to assure that shielding is adequate to meet regulatory exposure limits and/or limits specified in the shielding design. The radiation survey shall be conducted under conditions that are representative of actual operating conditions at the facility. Deficiencies shall be corrected prior to operation of the facility.
17 CCR 30312 (b) (5) for therapy facilities
Good Practice for non-therapy facilities