Section 120.301 - Purpose and Scope(A) Establish radiation safety requirements for persons using sources of radiation for industrial radiography,(B) Apply to all licensees and registrants who use sources of radiation for industrial radiography,(C) Apply to sealed radioactive sources and radiation machines, except for those regulations clearly applicable only to sealed radioactive sources; and,(D) Supplement, but do not replace, other applicable requirements of 105 CMR 120.000.