§ 71.51. Additional requirements for Type B packages.
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/us/cfr/t10/s§ 71.51·A research copy — for the controlling text, always check the official state or federal source. Not legal advice.
(a)A Type B package, in addition to satisfying the requirements of §§ 71.41 through 71.47, must be designed, constructed, and prepared for shipment so that under the tests specified in:
(1)Section 71.71 (“Normal conditions of transport”), there would be no loss or dispersal of radioactive contents—as demonstrated to a sensitivity of 10−6 A2 per hour, no significant increase in external surface radiation levels, and no substantial reduction in the effectiveness of the packaging; and
(2)Section 71.73 (“Hypothetical accident conditions”), there would be no escape of krypton-85 exceeding 10 A2 in 1 week, no escape of other radioactive material exceeding a total amount A2 in 1 week, and no external radiation dose rate exceeding 10 mSv/h (1 rem/h) at 1 m (40 in) from the external surface of the package.
(b)Where mixtures of different radionuclides are present, the provisions of appendix A, paragraph IV of this part shall apply, except that for Krypton-85, an effective A2 value equal to 10 A2 may be used.
(c)Compliance with the permitted activity release limits of paragraph
(a)of this section may not depend on filters or on a mechanical cooling system.
(d)For packages which contain radioactive contents with activity greater than 10 5 A2, the requirements of § 71.61 must be met. [60 FR 50264, Sept. 28, 1995, as amended at 69 FR 3794, Jan. 26, 2004; 69 FR 58039, Sept. 29, 2004]
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§ 71.51
Additional requirements for Type B packages.
Fed. Reg.×4
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