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PDFWAC 246-240-617

Records of periodic spot-checks for teletherapy units.

(1) A licensee shall retain a record of each periodic spot-check for teletherapy units required by WAC 246-240-378 for three years.
(2) The record must include:
(a) The date of the spot-check;
(b) The manufacturer's name, model number, and serial number of the teletherapy unit, source and instrument used to measure the output of the teletherapy unit;
(c) An assessment of timer linearity and constancy;
(d) The calculated on-off error;
(e) A determination of the coincidence of the radiation field and the field indicated by the light beam localizing device;
(f) The determined accuracy of each distance measuring and localization device;
(g) The difference between the anticipated output and the measured output;
(h) Notations indicating the operability of each entrance door electrical interlock, each electrical or mechanical stop, each source exposure indicator light, and the viewing and intercom system and doors; and
(i) The name of the individual who performed the periodic spot-check and the signature of the authorized medical physicist who reviewed the record of the spot-check.
(3) A licensee shall retain a copy of the procedures required by WAC 246-240-378(2) until the licensee no longer possesses the teletherapy unit.
[Statutory Authority: RCW 70.98.050. WSR 06-05-019, ยง 246-240-617, filed 2/6/06, effective 3/9/06.]
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