DHS 157.67(12)(b)(b) A licensee shall have an authorized medical physicist do all the following: DHS 157.67(12)(b)2.2. Review the results of each spot-check required by par. (a) 1. within 15 working days of the check. The authorized medical physicist need not actually perform the spot-check measurements. DHS 157.67(12)(b)3.3. The authorized medical physicist shall notify the licensee as soon as possible in writing of the results of the spot check. DHS 157.67(12)(c)1.1. Assure proper operation of treatment table retraction mechanism, using backup battery power or hydraulic backups with the unit off; helmet microswitches; emergency timing circuits and stereotactic frames and localizing devices. DHS 157.67(12)(c)2.a.a. The output for one typical set of operating conditions measured with the dosimetry system described in sub. (6) (b). DHS 157.67(12)(c)2.b.b. The difference between the measurement made in subd. 2. a. and the anticipated output expressed as a percentage of the anticipated output. DHS 157.67(12)(d)(d) To satisfy the requirements of par. (a) 2. and 3., a spot-check shall assure proper operation of all of the following: DHS 157.67(12)(d)1.1. Electrical interlocks at each gamma stereotactic radiosurgery room entrance. DHS 157.67(12)(d)2.2. Source exposure indicator lights on the gamma stereotactic radiosurgery unit, on the control console and in the facility. DHS 157.67(12)(e)(e) A licensee shall arrange for prompt repair of any system identified in par. (c) or (d) that is not operating properly. DHS 157.67(12)(f)(f) If the results of the checks required in par. (d) indicate the malfunction of any system, a licensee shall lock the control console in the off position and not use the unit except as may be necessary to repair, replace or check the malfunctioning system. DHS 157.67(13)(13) Additional technical requirements for mobile remote afterloader units. DHS 157.67(13)(a)(a) A licensee providing mobile remote afterloader service shall do all of the following: DHS 157.67(13)(a)1.1. Check survey instruments before medical use at each client’s address of use or on each day of use, whichever is more frequent.