Ariz. Admin. Code § 9-7-419

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

Section R9-7-419 - Conditions Requiring Individual Monitoring of External and Internal Occupational Dose

A. Each licensee or registrant shall monitor exposures from sources of radiation at levels sufficient to demonstrate compliance with the occupational dose limits of this Article.

B. At minimum each licensee or registrant shall supply and require the use of individual monitoring devices by the following personnel:

1. Adults likely to receive, in one year, an intake in excess of 10% of the applicable ALI in Table I, Columns 1 and 2, of Appendix B;

2. Minors and declared pregnant women likely to receive, in one year, a committed effective dose equivalent in excess of 0.5 mSv (0.05 rem);

3. Adults likely to receive, in one year from radiation sources external to the body, a dose in excess of 10 percent of the limits in R9-7-408(A);

4. Minors likely to receive, in one year, from radiation sources external to the body, a deep dose equivalent in excess of 1 mSv (0.1 rem), a lens dose equivalent in excess of 1.5 mSv (0.15 rem), or a shallow dose equivalent to the skin or to the extremities in excess of 5 mSv (0.5 rem);

5. Declared pregnant women likely to receive during the entire pregnancy, from radiation sources external to the body, a deep dose equivalent in excess of 1 mSv (0.1 rem) (Note: All of the occupational doses in R9-7-408 continue to be applicable to the declared pregnant worker as long as the embryo/fetus dose limit is not exceeded.);

6. Individuals entering a high or very high radiation area;

7. Individuals operating mobile x-ray equipment as described in R9-7-608;

8. Individuals holding animals for diagnostic x-ray procedures, as described in R9-7-613;

9. Individuals servicing enclosed beam x-ray systems with bypassed interlocks, as described in R9-7-803;

10. Individuals operating open beam fluoroscopic systems and ancillary personnel working in the room when the fluoroscopic system is in use, except when relieved of this requirement by registration condition;

11. Individuals performing well logging, as described in Article 17;

12. Individuals, wearing a finger or wrist individual monitoring device, during the operation of an open-beam or hand held analytical x-ray system or equipment with no safety devices as described in R9-7-806(C) and (F); and

13. Individuals, wearing a finger or wrist individual monitoring device, performing repairs that require the presence of a primary beam of the analytical x-ray system or equipment, as described in R9-7-806(C) and (F).

C. Each licensee shall monitor the occupational intake of radioactive material by and assess the committed effective dose equivalent to:

1. Adults likely to receive, in one year, an intake in excess of 10 percent of the applicable ALI in Table 1, Columns 1 and 2, of Appendix B;

2. Minors likely to receive, in one year, a committed effective dose equivalent in excess of 1 mSv (0.1 rem); and

3. Declared pregnant women likely to receive, during the entire pregnancy, a committed effective dose equivalent in excess of 1 mSv (0.1 rem).

D. Each licensee or registrant shall require that all individual monitoring devices be located on individuals according to the following requirements:

1. An individual monitoring device, used to obtain the dose equivalent to an embryo or fetus of a declared pregnant woman according to R9-7-415, shall be located under the protective apron at the waist. A qualified expert shall be consulted to determine the dose equivalent to the embryo or fetus if this individual monitoring device has a monthly reported dose equivalent value that exceeds 0.5 millisieverts (50 millirem). For purposes of this subsection, the value for determining the dose equivalent to an embryo or fetus under R9-7-415(C), for occupational exposure to radiation from medical fluoroscopic equipment, is the value reported by the individual monitoring device worn at the waist underneath the protective apron, which has been corrected for the particular individual and the work environment by a qualified expert.

2. An individual monitoring device used for lens dose equivalent shall be located at the neck or an unshielded location closer to the eye, outside the protective apron.

3. If only one individual monitoring device is used to determine the effective dose equivalent for external radiation, according to R9-7-408(C)(2)(a), the device shall be located at the neck outside the protective apron. If a second individual monitoring device is used for the same purpose, it shall be located under the protective apron at the waist. A second individual monitoring device is required for a declared pregnant woman.

4. An individual, wearing an extremity personnel monitoring device, during the operation of an open-beam or hand-held analytical x-ray system with no safety devices or an individual performing repairs in the presence of a primary beam of the analytical x-ray system or equipment, as described in R9-7-806(C) and (F), shall wear the device on the individual's finger or wrist.

E. Records.

1. Each licensee or registrant shall maintain records of doses received by all individuals for whom monitoring is required according to this Section, and records of doses received during planned special exposures, accidents, and emergency conditions. Assessments of dose equivalent and records made using units in effect before January 1, 1994, need not be changed. These records shall include, when applicable:

a. The deep-dose equivalent to the whole body, lens dose equivalent, shallow-dose equivalent to the skin, and shallow-dose equivalent to the extremities;

b. The estimated intake of radionuclides;

c. The committed effective dose equivalent assigned to the intake of radionuclides;

d. The specific information used to assess the committed effective dose equivalent according to R9-7-411(A) and (C), and when required R9-7-419;

e. The total effective dose equivalent when required by R9-7-409; and

f. The total of the deep-dose equivalent and the committed dose to the organ receiving the highest total dose;

2. The licensee or registrant shall make entries of the records specified in subsection (D)(1), at intervals not to exceed one year;

3. The licensee or registrant shall maintain at the inspection site the records specified in subsection (D)(1) in a clear and legible method that contains all the information required by this subsection;

4. The licensee or registrant shall maintain the records of dose to an embryo or fetus with the records of dose to the declared pregnant woman. The declaration of pregnancy, including the estimated date of conception, shall also be kept on file but may be maintained separately from the dose records; and

5. The licensee or registrant shall retain each required form or record for three years after the Department terminates each pertinent license or registration requiring the record.

Ariz. Admin. Code § R9-7-419

New Section R9-7-419 recodified from R12-1-419, at A.A.R. 813, effective March 22, 2018 (Supp. 18-1). Amended by final expedited rulemaking at 24 A.A.R. 2151, effective July 12, 2018 (Supp. 18-3).