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IATA危险品规章 Dangerous Goods Regulations 2(55)

时间:2014-11-10 01:35来源:IATA 作者:航空 点击:
  
●combination packagings with plastic inner packag-ings, other than plastic bags intended to contain solids or articles.
6.3.3.2.2 Where test samples are prepared in this way, the conditioning specified in 6.3.2.3 may be waived. Test liquids must be kept in the liquid state by the addition of anti-freeze, if necessary.
6.3.3.2.3 Removable head packagings for liquids must not be dropped until at least 24 hours after filling and closing to allow for any possible gasket relaxation.
6.3.3.3 Target
The target must be a non-resilient horizontal surface and must be:
(a)
integral and massive enough to be immovable;
(b)flat with a surface kept free from local defects capable of influencing the test results;
(c)rigid enough to be non-deformable under test con-ditions and not liable to become damaged by the tests; and
(d)sufficiently large to ensure that the test package falls entirely upon the surface.
6.3.3.4 Drop Height
6.3.3.4.1 For solids and liquids, if the test is performed with the solid or liquid to be transported or with another substance having essentially the same physical charac-teristics:
● Packing Group I—1.8 m;
6.3
●Packing Group II—1.2 m;
●Packing Group III—0.8 m.
6.3.3.4.2 For liquids in single packagings and for inner packagings of combination packagings, if the test is performed with water, where the substances to be carried have a relative density not exceeding 1.2:
●Packing Group I—1.8 m;
●Packing Group II—1.2 m;
●Packing Group III—0.8 m.
6.3.3.4.3 For liquids, if the test is performed with water, where the substances to be transported have a relative density exceeding 1.2, the drop height must be calculated on the basis of the relative density of the substance to be transported, rounded up to the first decimal, as follows:
●Packing Group I—relative density × 1.5 (m);
●Packing Group II—relative density × 1.0 (m);
●Packing Group III—relative density × 0.67 (m).
Note:
The term water includes water/antifreeze solutions with a minimum specific gravity of 0.95 for testing at -18°C.
6.3.3.5 Criteria for Passing the Test
A package passes the test if it meets the following criteria:
6.3.3.5.1 Each packaging containing liquid must be leak-proof when equilibrium has been reached between the internal and external pressures, except for inner packagings of combination packagings when it is not necessary that the pressures be equalized.
6.3.3.5.2 Where a packaging for solids undergoes a drop test and its upper face strikes the target, the test sample passes the test if the entire contents are retained by an inner packaging or inner receptacle, e.g. a plastic bag, even if the closure while retaining its containment function is no longer sift-proof.
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6.3.3.5.3 The packaging or outer packaging of a com-posite or combination packaging must not exhibit any damage liable to affect safety during transport. Inner receptacles, inner packagings, or articles must remain completely within the outer packaging and there must be no leakage of the filling substance from the inner recep-tacle or inner packaging(s).
6.3.3.5.4 Outer packagings and in the case of a bag, the outermost ply, must not exhibit any damage liable to affect safety during transport.
6.3.3.5.5 A slight discharge from the closure(s) upon impact is not considered to be a failure of the packaging provided that no further leakage occurs.
6.3.3.5.6 No rupture is permitted in packagings for goods of Class 1 which would permit the spillage of loose explosive articles or substances from the outer packaging.
6.3.4 Leakproofness Test
The leakproofness test must be performed on all types of packagings intended to contain liquids; however, this test is not required for the inner packagings of combination packagings.
6.3.4.1 Number of Test Samples
Three test samples per design type and manufacturer.
6.3.4.2 Test Method and Pressure to be Applied
For design type tests the packagings including their closures must be restrained under water for 5 minutes while an internal air pressure is applied; the method of restraint must not affect the results of the test. The air pressure (gauge) to be applied must be:
●Packing Group I—not less than 30 kPa (0.3 bar);
●Packing Group II—not less than 20 kPa (0.2 bar);
●Packing Group III—not less than 20 kPa (0.2 bar).
6.3.4.3 Other Methods
Other methods, at least equally effective, may be used.
6.3.4.4 Criterion for Passing the Test
There must be no leakage.
6.3.5 Internal Pressure (Hydraulic) Test
6.3.5.1 Packagings to be Tested
The internal pressure (hydraulic) test must be carried out on all design types of metal, plastic and composite packagings intended to contain liquids, however, this test is not required for the inner packagings of combination packagings. See 5.0.2.9 for the internal pressure require-ments for inner packagings.
6.3.5.2 Number of Test Samples
Three test samples per design type and manufacturer.
6.3.5.3 Test Methods and Pressure to be Applied
Metal packagings including their closures, must be subjected to the test pressure for 5 minutes. Plastic packagings and composite packagings (plastic material), including their closures, must be subjected to the test pressure for 30 minutes. This pressure is the one to be included in the marking required by 6.0.4.2(e). The manner in which the packagings are supported must not invalidate the test. The test pressure must be applied continuously and evenly: it must be kept constant throughout the test period. The hydraulic pressure (gauge) applied, as determined by any one of the following methods, must be:
6.3.5.3.1 Method A—Not less than the total gauge pressure measured in the packaging (i.e. the vapour pressure of the filling liquid and the partial pressure of the air or other inert gases minus 100 kPa) at 55°C (1 bar) multiplied by a safety factor of 1.5. This total gauge pressure must be determined on the basis of a maximum degree of filling in accordance with 5.0.2.8 and a filling temperature of 15°C. The test pressure must be not less than 95 kPa (0.95 bar), not less than 75 kPa
 
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