20.3.6.608

SPECIAL REQUIREMENTS FOR X-RAY THERAPY EQUIPMENT OPERATED AT POTENTIALS OF 60 kVp AND BELOW:

1. A. Equipment: All provisions of 607.A [Subsection A., Section 607 of 20.3.6.607 NMAC] apply except that the leakage radiation 5 cm (1.96 inches) from the surface to the tube housing shall not exceed 0.1 R/hr.

2. B. Operating Procedures:

   (1) Automatic timers shall be provided which will permit accurate presetting and termination of exposures as short as one second.

   (2) In the therapeutic application of apparatus constructed with beryllium or other low-filtration windows, the registrant shall ensure that the unfiltered useful beam is blocked at all times except when actually being used.

   (3) Machines having an output of more than 1,000 R (100 Bq) per minute at any accessible place shall not be left unattended without the power being shut off at the main disconnect switch in addition to the control panel switch.

   (4) The tube-head shall not be hand-held during x-ray therapy.

   [5-3-95; 20.3.6.608 NMAC – Rn, 20 NMAC 3.1.6.608, Recompiled xx/xx/xx]