ASTM E1226-12a由美国材料与试验协会 US-ASTM 发布于 2012。
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ASTM E1226-12a 尘雾爆炸性的标准试验方法的最新版本是哪一版?
最新版本是 ASTM E1226-19 。
5.1 This test method provides a procedure for performing laboratory tests to evaluate deflagration parameters of dusts.
5.2 The data developed by this test method may be used for the purpose of sizing deflagration vents in conjunction with the nomographs and equations published in NFPA 68, ISO 6184/1, or VDI 3673.
5.3 The values obtained by this testing technique are specific to the sample tested and the method used and are not to be considered intrinsic material constants.
5.4 For dusts with low KSt-values, discrepancies have been observed between tests in 20-L and 1-m3 chambers. A strong ignitor may overdrive a 20-L chamber, as discussed in Test Method E1515 and Refs (1-3).7
Note 5—Ref (2) concluded that dusts with KSt-values below 45 bar m/s when measured in a 20-L chamber with a 10 000-J ignitor, may not be explosible when tested in a 1-m3 chamber with a 10 000-J ignitor. Ref (2) and unpublished testing has also shown that in some cases the KSt-values measured in the 20-L chamber can be lower than those measured in the 1-m3 chamber. Refs (1) and (3) found that for some dusts, it was necessary to use lower ignition energy in the 20-L chamber in order to match MEC or MIC test data in a 1-m3 chamber. If a dust has measurable (nonzero) Pmax- and KSt-values with a 5000 or 108201;000-J ignitor when tested in a 20-L chamber but no measurable Pmax- and KSt-values with tests conducted using an ignition sou......
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