Minn. R. agency 144, ch. 4731, MEDICAL USE OF RADIOACTIVE MATERIAL, pt. 4731.4519 - SPOT CHECK RECORDS; TELETHERAPY UNITS

A. A licensee must retain a record of each periodic spot check for teletherapy units required under part 4731.4472 for three years. The record must include:

(1) the date of the spot check;

(2) the unit manufacturer's name;

(3) the model number and serial number for the teletherapy unit;

(4) the model number, serial number, and identity of the source;

(5) instruments used to measure the output of the teletherapy unit;

(6) an assessment of time linearity and constancy;

(7) the calculated on-off error;

(8) a determination of the coincidence of the radiation field and the field indicated by the light beam localizing device;

(9) the determined accuracy of each distance measuring and localization device;

(10) the difference between the anticipated output and the measured output;

(11) notations indicating the operability of each entrance door electrical interlock, electrical or mechanical stop, source exposure indicator light, and viewing and intercom system and doors;

(12) the name of the individual who performed the periodic spot check; and

(13) the signature of the authorized medical physicist who reviewed the record of the spot check.

B. A licensee must retain a copy of the procedures required under part 4731.4472, subpart 2, until the licensee no longer possesses the teletherapy unit.

Notes

Minn. R. agency 144, ch. 4731, MEDICAL USE OF RADIOACTIVE MATERIAL, pt. 4731.4519

29 SR 755

Statutory Authority: MS s 144.1202; 144.1203