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铁路行业美国标准(美标)对于烟火毒方面的要求
作者: 海飞音   发布于:2014-4-16 15:47:02   点击量:

1 FLAMMABILITY and SMOKE EMISSIONS

     标准                          要求

     ASTM E 162             Is ≤ 25

     ASTM E 662flaming     Ds (4.0) ≤ 100  Dm≤300

     ASTM E 662 non flaming     Ds (4.0) ≤ 100  Dm≤300

2 HEAT RELEASE RATE and CALORIC CONTENT

All materials for which flammability, smoke emissions and toxicity reports will be submitted shall be tested as per ASTM E 1354 or the combined equivalent ISO 5660 and ISO 1716 to determine their caloric content (btu/lb) and heat release rate (kW/m2 or Btu/hr*m2). The tests will be performed at a heat input of 50 kW/m2. There are no performance criteria for this test. 50 kW/m2 is the typical North American heat input value to perform the ASTM E 1354 tests, providing a worse case evaluation of the materials’ heat output. The heat release rate as given at 180 seconds in the test will be the value used.

3 Toxicity 

All materials for which flammability and smoke emissions reports will be submitted shall be tested for smoke toxicit.The maximum toxic gas release limits are: 

  • Carbon Monoxide (CO) 3,500 ppm

  • Hydrogen Fluoride (HF) 200 ppm

  • Nitrogen Dioxide (NO2) 100 ppm

  • Hydrogen Chloride (HCL) 500 ppm

  • Hydrogen Cyanide (HCN) 150 ppm

  • Sulfur Dioxide (SO2) 100 ppm

The smoke toxicity tests may be performed in conjunction with the smoke emission tests using the NBS smoke chamber to collect the smoke, as required in the ASTM E 662 test procedure. The smoke toxicity testing protocole shall be BSS 7239.

英文的,原汁原味,不翻译。


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