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IATA危险品规章 Dangerous Goods Regulations 2(129)

时间:2014-11-10 01:35来源:IATA 作者:航空 点击:
  
(b)exposure of the specimen to an ambient temperature of 38°C, subject to the solar insolation conditions specified in Table 10.6.A and subject to the design maximum rate of internal heat generation within the package by the radioactive contents for a sufficient period to ensure that temperatures in the specimen are everywhere decreasing and/or are approaching initial steady state conditions. Alternatively, any of these parameters are allowed to have different val-ues following cessation of heating, providing due account is taken of them in the subsequent assess-ment of package response.
During and following the test the specimen must not be artificially cooled and any combustion of materials of the specimen must be permitted to proceed naturally.
10.6.3.6.3 Water Immersion Test
10.6.3.6.3.1 General
The specimen must be immersed under a head of water of at least 15 m for a period of not less than 8 hours in the attitude which will lead to maximum damage. For demonstration purposes, an external pressure of at least
10.6
150 kPa [gauge] (1.5 bar [gauge] or 22 lb/in2 [gauge]) is considered to meet these conditions.
10.6.3.6.3.2 Enhanced Water Immersion Test for Type B(U) and Type B(M) Packages Containing more than 105 A2 and Type C Packages
The specimen must be immersed under a head of water of at least 200 m for a period of not less than one hour. For demonstration purposes, an external gauge pressure of at least 2 MPa is considered to meet these conditions.
10.6.3.6.4 Water Leakage Test for Packages Containing Fissile Material
10.6.3.6.4.1 Packages for which water in-leakage or out-leakage to the extent which results in greatest reac-tivity, has been assumed for purposes of assessment under 10.6.2.8.2 and 10.6.2.8.3 must be excepted from the test.
10.6.3.6.4.2 Before the specimen is subjected to the water leakage test specified in 10.6.3.6.4.3, it must be subjected to Drop Test 2 in 10.6.3.6.1.2, and either Drop Test 1 in 10.6.3.6.1.1 or Drop Test 3 in 10.6.3.6.1.3 as required by 10.6.2.8.3.2 and the Thermal Test specified in
10.6.3.6.2.
10.6.3.6.4.3 The specimen must be immersed under a head of water of at least 0.9 m for a period of not less than 8 hours and in the attitude for which maximum leakage is expected.
10.6.3.7 Tests for Type C Packages
10.6.3.7.1 Test Requirements
Specimens must be subjected to the effects of each of the following test sequences in the orders specified:
(a)
the tests specified in 10.6.3.6.1.1, 10.6.3.6.1.3,
10.6.3.7.2 and 10.6.3.7.3; and
(b)
the test specified in 10.6.3.7.4.
Separate specimens are allowed to be used for each of the sequences (a) and (b).
10.6.3.7.2 Puncture/Tearing Test
The specimen must be subjected to the damaging effects of a solid probe made of mild steel. The orientation of the probe to the surface of the specimen must be as to cause maximum damage at the conclusion of the test sequence specified in 10.6.3.7.1(a).
(a)  the specimen, representing a package having a mass less than 250 kg, must be placed on a target and subjected to a probe having a mass of 250 kg falling from a height of 3 m above the intended impact point. For this test the probe must be a 20 cm diameter cylindrical bar with the striking end forming a frustum of a right circular cone with the following dimensions: 30 cm height and 2.5 cm in diameter at the top with its rounded edge rounded off to a radius of not more than 6 mm. The target on which the specimen is placed must be as specified in 10.6.3.3;
(b) for packages having a mass of 250 kg or more, the base of the probe must be placed on a target and
10.6  the specimen dropped onto the probe. The height of the drop, measured from the point of impact with the specimen to the upper surface of the probe must be 3 m. For this test the probe must have the same properties and dimensions as specified in (a) above, except that the length and mass of the probe must be such as to incur maximum damage to the speci-men. The target on which the base of the probe is placed must be as specified in 10.6.3.3.
10.6.3.7.3  Enhanced Thermal Test
The conditions for this test must be as specified in 10.6.3.6.2, except that the exposure to the thermal environment must be for a period of 60 minutes.
10.6.3.7.4 Impact Test
The specimen must be subject to an impact on a target at a velocity of not less than 90 m/s, at such an orientation as to suffer maximum damage. The target must be as defined in 10.6.3.3, except that the target surface may be at any orientation as long as the surface is normal to the specimen path.
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10.6.3.8 Tests for Packagings Designed to Contain Uranium Hexafluoride
Specimens that comprise or simulate packagings designed to contain 0.1 kg or more of uranium hexafluo-ride must be tested hydraulically at an internal pressure of at least 1.38 MPa but, when the test pressure is less than
2.76 MPa, the design must require multilateral approval. For retesting packagings, any other equivalent non-destructive testing may be applied subject to multilateral approval.
10.6.3.9 Notification and Registration of Serial Numbers
The competent authority must be informed of the serial number of each packaging manufactured to a design approved under 10.6.2.5, 10.6.2.7 and 10.6.2.8.4. The competent authority will maintain a register of such serial numbers.
Multilateral approval may be by validation of the original certificate issued by the competent authority of the State of origin of the design or shipment.
10.6.4 Transitional Measures for Class 7
10.6.4.1 Packages Not Requiring Competent Authority Approval of Design Under the 1985 and 1985 (as amended 1990) Editions of IAEA Safety Series No. 6
10.6.4.1.1 Excepted packages, Industrial packages Type IP-1, Type IP-2 and Type IP-3 and Type A packages that did not require approval of design by the competent authority and which meet the requirements of the 1985 or 1985 (As Amended 1990) Editions of IAEA Regulations for the Safe Transport of Radioactive Material (IAEA Safety Series No. 6) may continue to be used subject to the mandatory programme of quality assurance in accordance with the requirements of 10.0.3 and the activity limits and material restrictions of 10.3.2 and 10.3.11.
 
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