South Carolina Code of Regulations
Chapter 61 - DEPARTMENT OF HEALTH AND ENVIRONMENTAL CONTROL
Subchapter 61-63 - Radioactive Materials (Title A)
Part IV - USE OF RADIONUCLIDES IN THE HEALTH PROFESSIONS
Subpart H - PHOTON EMITTING REMOTE AFTERLOADER UNITS, TELETHERAPY UNITS, AND GAMMA STEREOTACTIC RADIOSURGERY UNITS
Section 61-63.IV.H.RHA 4.67 - Periodic Spot-Checks for Teletherapy Units

Universal Citation: SC Code Regs 61-63.IV.H.RHA 4.67

Current through Register Vol. 48, No. 9, September 27, 2024

4.67.1 A licensee authorized to use teletherapy units for medical use shall perform output spot-checks on each teletherapy unit once in each calendar month that include determination of--

4.67.1.1 Timer accuracy, and timer linearity over the range of use;

4.67.1.2 On-off error;

4.67.1.3 The coincidence of the radiation field and the field indicated by the light beam localizing device;

4.67.1.4 The accuracy of all distance measuring and localization devices used for medical use;

4.67.1.5 The output for one typical set of operating conditions measured with the dosimetry system described in RHA 4.63.2; and

4.67.1.6 The difference between the measurement made in RHA 4.67.1.5 and the anticipated output, expressed as a percentage of the anticipated output (i.e., the value obtained at last full calibration corrected mathematically for physical decay).

4.67.2 A licensee shall perform measurements required by RHA 4.67.1 in accordance with written procedures established by the authorized medical physicist. That individual need not actually perform the spot-check measurements.

4.67.3 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 in writing of the results of each spot-check.

4.67.4 A licensee authorized to use a teletherapy unit for medical use shall perform safety spot-checks of each teletherapy facility once in each calendar month and after each source installation to assure proper operation of--

4.67.4.1 Electrical interlocks at each teletherapy room entrance;

4.67.4.2 Electrical or mechanical stops installed for the purpose of limiting use of the primary beam of radiation (restriction of source housing angulation or elevation, carriage or stand travel and operation of the beam on-off mechanism);

4.67.4.3 Source exposure indicator lights on the teletherapy unit, on the control console, and in the facility;

4.67.4.4 Viewing and intercom systems;

4.67.4.5 Treatment room doors from inside and outside the treatment room; and

4.67.4.6 Electrically assisted treatment room doors with the teletherapy unit electrical power turned off.

4.67.5 If the results of the checks required in RHA 4.67.4 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.

4.67.6 A licensee shall retain a record of each spot-check required by RHA 4.67.1 and 4.67.4 and a copy of the procedures required by RHA 4.67.2, in accordance with RHA 4.111.

Disclaimer: These regulations may not be the most recent version. South Carolina may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.