Ariz. Admin. Code § 9-7-1140

Current through Register Vol. 30, No. 50, December 13, 2024

Section R9-7-1140 - Enclosed Radiography

A. The Department has determined that any certified or certifiable cabinet x-ray system, as defined in Article 1, is exempt from the requirements of Article 11, provided that both of the following conditions are met:

1. The registrant makes, or causes to be made, an evaluation of each certified and certifiable cabinet x-ray system, at intervals that do not exceed 12 months, to determine whether the system conforms to the standards for certified and certifiable cabinet x-ray systems defined in Article 1. Records of each evaluation shall be maintained for three years from the date the record is created; and

2. The registrant performs a physical radiation survey with a survey instrument calibrated within the preceding 12 months and designed for the energy range and levels of radiation that will be assessed.

B. A registrant with a cabinet x-ray system that is not exempt under subsection (A) shall comply with the recordkeeping requirements of this Article and the following special requirements. The registrant shall:

1. Ensure that radiation levels measured at 5 centimeters (2 inches) from any accessible exterior surface of the enclosure do not exceed 50 microsievert (0.5 milliroentgen) in one hour for any combination of technical factors (i.e., mA, kVp);

2. Ensure that access to the interior of the enclosure is possible only through interlocked doors or panels that prevent production of radiation unless all interlocked doors or panels are securely closed. The registrant shall ensure that opening a door or panel results in immediate termination of radiation production and subsequent reactivation of the x-ray tube is only possible at the control panel;

3. Provide visible warning signals, activated only during production of radiation, at the control panel and at each access point to the interior of the enclosure;

4. Before using an x-ray system make, or cause to be made, an initial evaluation of the x-ray system to determine compliance with this Article, and subsequently evaluate the x-ray system at intervals that do not exceed three months. The registrant shall maintain a record of each evaluation for two years, and

5. Using instrumentation that complies with R9-7-1108, perform a physical radiation survey to satisfy the requirements of subsection (B)(4).

C. A registrant with a shielded room x-ray systems shall comply with the recordkeeping requirements of this Article and the following special requirements. The registrant shall:

1. Shield each x-ray room so that every location on the exterior meets the requirements for an "unrestricted area" as specified in R9-7-416;

2. Provide access to the interior of a shielded x-ray room only through doors or panels that are interlocked. The registrant shall ensure that radiation production is possible only when all interlocked doors and panels are securely closed, opening of any interlocked door or panel results in immediate termination of radiation production; and subsequent reactivation of the x-ray tube is only possible at the control panel;

3. Provide each access point with two interlocks, each on a separate circuit, so that failure of one interlock will not affect the performance of the other interlock;

4. Provide visible warning signals, activated only during production of radiation at the control panel and each access point to the shielded room;

5. Make, or cause to be made, an initial evaluation of each shielded room x-ray system to determine compliance with this Article, and subsequently evaluate the x-ray system at intervals that do not exceed three months. The registrant shall maintain a record of each evaluation for two years;

6. Perform radiation surveys to determine exposure with an instrument that meets the requirements of R9-7-1108;

7. Inspect electrical interlocks and warning devices for correct operation before each use, and maintain a record of each inspection for two years;

8. Not permit an individual to operate an x-ray machine for shielded room radiography unless the individual has received a copy of, and instruction in, the operating procedures and demonstrated competence in the safe use of the equipment;

9. Ensure that an individual does not occupy the interior of any shielded room x-ray system during production of radiation;

10. Provide personnel monitoring devices that meet the requirements of R9-7-1130 to each shielded room x-ray machine operator, and require that each operator use the devices;

11. Maintain records of:

a. Quarterly inventories for mobile systems, as prescribed in R9-7-1110; and

b. Utilization logs for all systems, as prescribed in R9-7-1112; and

12. Maintain records for three years from the date of the quarterly inventory or utilization log.

D. A registrant shall connect an enclosed radiography machine to the electrical system in a manner that will prevent a ground fault from generating x-radiation.

Ariz. Admin. Code § R9-7-1140

New Section R9-7-1140 recodified from R12-1-1140 at 24 A.A.R. 813, effective March 22, 2018 (Supp. 18-1).