180 NAC 7-077. PERIODIC SPOT-CHECKS FOR REMOTE AFTERLOADER UNITS

077. PERIODIC SPOT-CHECKS FOR REMOTE AFTERLOADER UNITS. 077.01 SPOT-CHECK FREQUENCY. A licensee authorized to use a remote afterloader unit for medical use must perform spot-checks of each remote afterloader facility and on each unit: (A) At the beginning of each day of use of a HDR, MDR, or PDR remote afterloader unit;(B) Prior to each patient treatment with a LDR remote afterloader unit; and(C) After each source installation. 077.02 WRITTEN PROCEDURES. The licensee must have the authorized medical physicist establish written procedures for performing the spot-checks required in 180 NAC 7-077.01. The authorized medical physicist need not actually perform the spot-check measurements. 077.03 RESULTS. A licensee must have the authorized medical physicist review and sign the results of each spot-check within fifteen days. The authorized medical physicist must notify the licensee within ten days in writing of the results of each spot-check. 077.04 ASSURANCE OF PROPER OPERATION. To satisfy the requirements of 180 NAC 7-077.01, spot-checks must, at a minimum, assure proper operation of: (A) Electrical interlocks at each remote afterloader unit room entrance;(B) Source exposure indicator lights on the remote afterloader unit, on the control console, and in the facility;(C) Viewing and intercom systems in each HDR, MDR, and PDR remote afterloader facility;(D) Radiological emergency response equipment;(E) Radiation monitors used to indicate the source position;(F) Timer accuracy;(G) Clock, date and time, in the unit's computer; and(H) Decayed source or sources activity in the unit's computer. 077.05 SYSTEM MALFUNCTION. If the results of the checks required in 180 NAC 7-077.04 indicate the malfunction of any system, a licensee must lock the control console in the off position and not use the unit other than as necessary to repair, replace, or check the malfunctioning system. 077.06 RECORDS. A licensee must retain a record of each check required by 180 NAC 7-077.04 according to 180 NAC 7-110.