Periodic spot-checks for remote afterloader units.

CFR · 2024-01-01 · US · Title 10

(a) A licensee authorized to use a remote afterloader unit for medical use shall perform spot-checks of each remote afterloader facility and on each unit— (1) Before the first use of a high dose-rate, medium dose-rate, or pulsed dose-rate remote afterloader unit on a given day; (2) Before each patient treatment with a low dose-rate remote afterloader unit; and (3) After each source installation. (b) A licensee shall perform the measurements required by paragraph (a) of this section in accordance with written procedures established by the authorized medical physicist. That individual need not actually perform the spot check measurements. (c) A licensee shall have the authorized medical physicist review the results of each spot-check within 15 days. The authorized medical physicist shall notify the licensee as soon as possible (d) To satisfy the requirements of paragraph (a) of this section, spot-checks must, at a minimum, assure proper operation of— (1) Electrical interlocks at each remote afterloader unit room entrance; (2) Source exposure indicator lights on the remote afterloader unit, on the control console, and in the facility; (3) Viewing and intercom systems in each high dose-rate, medium dose-rate, and pulsed dose-rate remote afterloader facility; (4) Emergency response equipment; (5) Radiation monitors used to indicate the source position; (6) Timer accuracy; (7) Clock (date and time) in the unit's computer; and (8) Decayed source(s) activity in the unit's computer. (

official document · source cfr-2024 · id 10:§ 35.643