Table 4-7. Activity Limits for Limited Quantities, Instruments, and Articles

TM 55-315

Table 4-7. Activity Limits for Limited Quantities, Instruments, and Articles

does not contain more than 15 grams of uranium-235.

The material is otherwise prepared for shipment to meet the additional requirements for limited quantities of

radioactive materials and radioactive instruments and articles (49 CFR 173.421-1).

4-21. Exception for Instruments and Articles (49 CFR 173.422)

Instruments and manufactured articles (including clocks and electronic tubes or apparatus) or similar devices that have,

as a component, radioactive materials in gaseous or nondispersible solid form are excepted from the specification

packaging, shipping paper and certification, marking, and labeling requirements if:

a. The activity of the instrument or article does not exceed the relevant limit listed in table 4-7.

b. The total activity per package does not exceed the relevant limit listed in table 4-7.

c. The radiation level at 10 centimeters (4 inches) from any point on the external surface of any unpackaged

instrument or article does not exceed 10 millirems per hour.

d. The radiation level at any point on the external surface of a package bearing the article or instrument does not

exceed 0.5 millirem per hour.

e. The nonfixed (removable) radioactive surface contamination of the external surface of the package does not

exceed the limits specified in paragraph 3-11.

Except for the excepted articles containing natural uranium or thorium (49 CFR 173.424), the package does not

contain more than 15 grams of uranium-235.

g. The instrument or article is otherwise prepared for shipment to meet the additional requirements for limited

quantities of radioactive materials and radioactive instruments and articles (49 CFR 173.421-1).

4-22. Exemption for Shipment Quantities of Low Specific Activity Materials (49 CFR 173.423)

Radioactive materials whose activity per package does not exceed the limits specified in paragraph 4-21 and table 4-7

and also meet the requirements of b through d below are qualified for shipments under the provisions of a below.

a. Low specific activity (LSA) radioactive materials consigned as exclusive use are exempt from the provisions of

paragraphs 4-4a, b, e and g. However, they must be packaged according to the requirements of paragraph 4-11 and

must be marked and labeled as required in chapter 5 (49 CFR 172.300 and 172.400).

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