Purpose and Scope

(A) 105 CMR 120.620 contains requirements for the issuance of a license authorizing the use of sealed sources containing radioactive materials in irradiators used to irradiate objects or materials using gamma radiation. 105 CMR 120.620 also contains radiation safety requirements for operating irradiators. The requirements of 105 CMR 120.620 are in addition to other requirements of 105 CMR 120.000. In particular, the provisions of 105 CMR 120.001, 120.100, 120.200, 120.750 and 120.770 apply to applications and licenses subject to 105 CMR 120.620. Nothing in 105 CMR 120.620 relieves the licensee from complying with other applicable Federal, State and local regulations governing the siting, zoning, land use, and building code requirements for industrial facilities. (B) 105 CMR 120.620 applies to panoramic irradiators that have either dry or wet storage of the radioactive sealed sources and to underwater irradiators in which both the source and the product being irradiated are under water. Irradiators whose dose rates exceed five grays (500 rads) per hour at one meter from the radioactive sealed sources in air or in water, as applicable for the irradiator type, are covered by 105 CMR 120.620. (C) 105 CMR 120.620 does not apply to self-contained dry-source-storage irradiators (those in which both the source and the area subject to irradiation are contained within a device and are not accessible by personnel), medical radiology or teletherapy, radiography (the irradiation of materials for nondestructive testing purposes), gauging, or open-field (agricultural) irradiations.