# Tenn. Comp. R. & Regs. 0400-20-04-.04 - DEFINITIONS

_{1}" means the maximum activity of special form radioactive material permitted in a Type A package. This value is either listed in Table A-1 of Schedule 10-6 in Rule 0400-20-10-.38, or may be derived in accordance with the procedures prescribed in Schedule 10-6 in Rule 0400-20-10-.38.

_{2}" means the maximum activity of radioactive material, other than special form material, LSA, and SCO material, permitted in a Type A package. This value is either listed in Table A-1 of Schedule 10-6 in Rule 0400-20-10-.38, or may be derived in accordance with the procedure prescribed in Schedule 10-6 in Rule 0400-20-10-.38.

^{2}(1x10

^{-5}µCi/cm

^{2}) for beta and gamma emitters and low toxicity alpha emitters, or 0.04 Bq/cm

^{2}(1x10

^{-6}µCi/cm

^{2}) for all other alpha emitters.

_{2}value is unlimited; or

_{2}/gram for solids and gases or 1 E-5 A

_{2}/gram for liquids.

_{2}; and

_{2}/gram.

^{2}) gauge or a pressure relief device that would allow the release of radioactive material to the environment under the tests specified in 10 CFR 71.73 (hypothetical accident conditions), in which case it will receive a designation B(M). B(U) refers to the need for unilateral approval of international shipments; B(M) refers to the need for multilateral approval of international shipments. There is no distinction made in how packages with these designations may be used in domestic transportation. To determine their distinction for international transportation, see U.S. DOT regulations in 49 CFR 173. A Type B package approved before September 6, 1983, was designated only as Type B. Limitations on its use are specified in 10 CFR 71.19.

^{-4 }coulombs per kilogram of air.

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^{2}(or the area of the surface if less than 300 cm

^{2}) does not exceed 1 E-4 microcurie (4 becquerels) per square centimeter (cm

^{2}) for beta and gamma and low toxicity alpha emitters or 1 E-5 microcuries (0.4 becquerel) per cm

^{2}for all other alpha emitters;

^{2 }(or the area of the surface if less than 300 cm

^{2}) does not exceed 1 microcurie (4 E+4 becquerels) per square centimeter (cm

^{2}) for beta and gamma and low toxicity alpha emitters or 0.1 microcurie (4 E+3 becquerels) per cm

^{2}for all other alpha emitters; and

^{2}(or the area of the surface if less than 300 cm

^{2}) does not exceed 1 microcurie (4 E+4 becquerels) per square centimeter (cm

^{2}) beta and gamma and low toxicity alpha emitters or 0.1 microcurie (4 E+3 becquerels) per cm

^{2}for all other alpha emitters.

^{2}(or the area of the surface if less than 300 cm

^{2}) does not exceed 1 E-2 microcurie (400 becquerels) per square centimeter (cm

^{2}) for beta and gamma and low toxicity alpha emitters or 1 E-3 microcurie (40 becquerels) per cm

^{2}for all other alpha emitters;

^{2}(or the area of the surface if less than 300 cm

^{2}) does not exceed 20 2 microcuries (8 E+5 becquerels) per square centimeter (cm ) for beta and gamma and low toxicity alpha emitters or 2 microcuries (8 E+4 becquerels) per cm

^{2}for all other alpha emitters; and

^{2}(or the area of the surface if less than 300 cm

^{2}) does not exceed 20 microcuries (8 E+5 becquerels) per square centimeter (cm

^{2}) for beta and gamma and low toxicity alpha emitters or 2 microcuries (8 E+4 becquerels) per cm

^{2}for all other alpha emitters.

_{1}for special form radioactive material or A

_{2}for normal form radioactive material, where A

_{1}and A

_{2}are given in Table A-1, Schedule 10-6, Rule 0400-20-10-.37, or may be determined by procedures described in Schedule 10-6, Rule 0400-20-10-.38.

### Notes

**Authority:** T.C.A. §§
4-5-201,
et seq.; 68-202-101, et seq.; and 68-202-201, et seq.

It is reasonable to assume that individuals will not occupy the area within 8 centimeters of the barrier continuously.

When not underlined the term "exposure" has a more general meaning in these rules.

Type X quantities are defined in Tables RHS 2-1, RHS 2-2 and RHS 2-3 as contained in Chapter 0400-20-05. For purposes of Rule 0400-20-04-.04, where there is involved a combination of radioactive materials licensed, the method of deriving a Type X quantity is as specified in Rule 0400-20-05-.162(1)(b).

Licensees or certified registrants that utilize persons who do not meet these criteria for minimum training and experience may request a variance excepting them from the requirements of using qualified experts. The request should include:

1. The name of the proposed individual,

2. A description of his or her training and experience including information similar to that specified in Rule 0400-20-04-.04,

3. Reports of at least one calibration and spot-check program based on measurements personally made by the proposed individual within the last 10 years, and

4. Written endorsement of the technical qualifications of the proposed individual from personal knowledge by a physicist certified by the American Board of Radiology in one of the specialties listed in Rule 0400-20-04-.04. The variance request should be addressed to the Division of Radiological Health at the address given in Rule 0400-20-04-.07.

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