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IATA危险品规章 Dangerous Goods Regulations 2(125)

时间:2014-11-10 01:35来源:IATA 作者:航空 点击:
  
10.6.2.5.8 A package must be so designed that, if it were subjected to:
(a)the tests specified in 10.6.3.4, it would restrict the loss of radioactive contents to not more than 10-6 A2 per hour; and
(b)the tests specified in 10.6.3.6, 10.6.3.6.1.2 Drop Test 2, 10.6.3.6.2 and 10.6.3.6.3.1 and the tests in:
1.10.6.3.6.1.3 Drop Test 3 when the package has a weight less than or equal to 500 kg, an overall density not greater than 1,000 kg/m3 based on the external dimensions, and radioactive con-tents greater than 1,000 A2 not as Special Form radioactive material; or
2.10.6.3.6.1.1 Drop Test 1 for all other packages.
it would meet the following requirements:
●retain sufficient shielding to ensure that the radiation level at 1 m from the surface of the package would not exceed 10 mSv/h with the maximum radioactive contents for which the package is designed to contain; and
●restrict the accumulated loss of radioactive contents in a period of one week to not more than 10 A2 for Krypton-85 and not more than A2 for all other radionuclides.
10.6.2.5.9 Where mixtures of different radionuclides are present, the provisions of 10.3.2.4 and 10.3.2.5 must apply except that for Krypton-85 an effective A2 value equal to 100 TBq may be used. For 10.6.2.5.8(a), the evaluation must take into account the external contami-nation limitations of 10.5.3.2.
10.6.2.5.10 A package for radioactive contents with activity greater than 105 A2 must be so designed that if it were subjected to the enhanced water immersion test specified in 10.6.3.6.3.2 there would be no rupture of the containment system.
10.6.2.5.11 Compliance with the permitted activity release limits must not depend either upon filters or upon a mechanical cooling system.
10.6.2.5.12 A package must not include a pressure relief system from the containment system which would allow the release of radioactive material to the environ-ment under the conditions of the tests specified in 10.6.3.4, 10.6.3.6 and 10.6.3.6.1 to 10.6.3.6.3.
10.6.2.5.13 A package must be so designed that if it were at the maximum normal operating pressure and it were subjected to the tests specified in 10.6.3.4, 10.6.3.6 and 10.6.3.6.1 to 10.6.3.6.3, the level of strains in the
containment system would not attain values which would adversely affect the package in such a way that it would fail to meet the applicable requirements.
10.6.2.5.14 A package must not have a maximum normal operating pressure in excess of a gauge pressure of 700 kPa.
10.6.2.5.15 A package containing low dispersible radio-active material must be so designed that any features added to the low dispersible radioactive material that are not part of it, or any internal components of the packaging must not adversely affect the performance of the low dispersible radioactive material.
10.6.2.5.16 A package must be designed for an ambient temperature range from -40°C to +38°C.
10.6.2.6 Requirements for Type B(M) Packages
10.6.2.6.1 Type B(M) packages must meet the require-ments for Type B(U) packages specified in 10.6.2.5.2 except that for packages to be transported solely within a specified State or solely between specified States, con-ditions other than those given in 10.6.2.4.1.4, 10.6.2.5.4, 10.6.2.5.6, 10.6.2.5.10 to 10.6.2.5.16 may be assumed with the approval of the competent authorities of those States. Not withstanding, the requirements for Type B(U) packages specified in 10.6.2.5.6, 10.6.2.5.10 to
10.6.2.5.16 must be met as far as practicable.
10.6.2.7 Requirements for Type C Packages
10.6.2.7.1 A Type C package is a packaging containing an activity that may be in excess of A1 (if Special Form radioactive material) or in excess of A2 (if not in Special Form radioactive material).
10.6.2.7.2 Type C packages must be designed to meet the requirements of 10.6.0, 10.6.1, 10.6.2.4.1 except for 10.6.2.4.1(b), 10.6.2.4.2, 10.6.2.5.3, 10.6.2.5.4,
10.6.2.5.6, 10.6.2.5.11 to 10.6.2.5.16, and, in addition, the requirements specified in 10.6.2.7.3 to 10.6.2.7.5.
10.6.2.7.3 A package must be capable of meeting the assessment criteria prescribed for tests in 10.6.2.5.8(b) and 10.6.2.5.12 after burial in an environment defined by a thermal conductivity of 0.33 W/(m.K) and a temperature of 38°C in the steady state. Initial conditions for the assessment must assume that any thermal insulation of the package remains intact, the package is at the maximum normal operating pressure and the ambient temperature is 38°C.
10.6.2.7.4 A package must be so designed that, if it were at the maximum normal operating pressure and subjected to:
(a)the tests specified in 10.6.3.4, it would restrict the loss of radioactive contents to not more than 10-6 A2 per hour; and
(b)the test sequences in 10.6.3.7.1, it would meet the following requirements:
●  retain sufficient shielding to ensure that the radiation level at 1 m from the surface of the package would not exceed 10 mSv/h with the maximum radioactive contents which the package is designed to contain; and
●  restrict the accumulated loss of radioactive con-tents in a period of 1 week to not more than 10 A2 for Krypton-85 and not more than A2 for all other radionuclides.
Where mixtures of different radionuclides are present, the provisions of 10.3.2.4 and 10.3.2.5 must apply except that for Krypton-85 an effective A2(I) value equal to 10 A2 may be used. For case (a) above, the assessment must take into account the external contamination limits of 10.5.3.2.
10.6.2.7.5 A package must be so designed that there will be no rupture of the containment system following performance of the enhanced water immersion test speci-fied in 10.6.3.6.3.2.
10.6.2.8 Requirements for Packages Containing Fissile Materials
10.6.2.8.1 General
Except as provided in 10.3.7.2, packages containing fissile material must be designed and used so as to comply with the requirements of 10.6.2.8.1.1 to
 
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