OPERATING AND EMERGENCY PROCEDURES

Subpart 1. Operating procedures. A licensee must have and follow written operating procedures for: A. operation of the irradiator, including entering and leaving the radiation room; B. use of personnel dosimeters; C. surveying the shielding of panoramic irradiators; D. monitoring pool water for contamination while the water is in the pool and before release of pool water to unrestricted areas; E. leak testing of sources; F. inspection and maintenance checks required under part 4731.6210 ; G. loading, unloading, and repositioning sources, if the operations will be performed by the licensee; and H. inspection of movable shielding required under part 4731.6060 , subpart 1, item H, if applicable. Subp. 2. Emergency procedures. A licensee must have and follow emergency or abnormal event procedures, appropriate for the irradiator type, for: A. sources stuck in the unshielded position; B. personnel overexposures; C. a radiation alarm from the product exit portal monitor or pool monitor; D. detection of leaking sources, pool contamination, or an alarm caused by contamination of pool water; E. a low or high water level indicator, an abnormal water loss, or leakage from the source storage pool; F. a prolonged loss of electrical power; G. a fire alarm or explosion in the radiation room; H. an alarm indicating unauthorized entry into the radiation room, area around the pool, or another alarmed area; I. natural phenomena, including an earthquake, a tornado, flooding, or other phenomena as appropriate for the geographical location of the facility; and J. the jamming of automatic conveyor systems. Subp. 3. Revision of procedures. A licensee may revise operating and emergency procedures without commissioner approval only if: A. the revisions do not reduce the safety of the facility; B. the revisions are consistent with the outline or summary of procedures submitted with the license application; C. the revisions have been reviewed and approved by the radiation safety officer; and D. the users or operators have been instructed and tested on the revised procedures before the procedures are put into use.