§35.2642. Records of periodic spot-checks for teletherapy units.
10 C.F.R. § 35.2642
A licensee shall retain a record of each periodic spot-check for teletherapy units required by § 35.642 for 3 years.
The record must include—
The date of the spot-check;
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;
An assessment of timer linearity and constancy;
The calculated on-off error;
A determination of the coincidence of the radiation field and the field indicated by the light beam localizing device;
The determined accuracy of each distance measuring and localization device;
The difference between the anticipated output and the measured output;
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
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.
A licensee shall retain a copy of the procedures required by § 35.642(b) until the licensee no longer possesses the teletherapy unit.
Notes, amendments, and revision history
Authority
Authority: Atomic Energy Act of 1954, secs. 81, 161, 181, 182, 183, 223, 234, 274 (42 U.S.C. 2111, 2201, 2231, 2232, 2233, 2273, 2282, 2021); Energy Reorganization Act of 1974, secs. 201, 206 (42 U.S.C. 5841, 5846); 44 U.S.C. 3504 note.
Source
Source: 67 FR 20370, Apr. 24, 2002, unless otherwise noted.