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ASTM E2067-2008 完全氧燃烧热量测量火灾试验的标准实施规程

ASTM E2067-2008 完全氧燃烧热量测量火灾试验的标准实施规程

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【英文标准名称】: Standard Practice for Full-Scale Oxygen Consumption Calorimetry Fire Tests
【原文标准名称】: 完全氧燃烧热量测量火灾试验的标准实施规程
【标准号】: ASTM E2067-2008
【标准状态】: 现行
【国别】: 美国
【发布日期】: 2008
【实施或试行日期】:
【发布单位】: 美国材料与试验协会(US-ASTM)
【起草单位】: E05.21
【标准类型】: (Practice)
【标准水平】: ()
【中文主题词】:
【英文主题词】: calorimetry; fire; full-scale test; heat release; oxygen consumption; smoke; Calibration--laboratory analysis instrumentation; Fire testing--building materials; Full-scale testing; Heat release; Oxygen consumption calorimetry; Smoke analysis; Smoke obscur
【摘要】: The oxygen consumption principle, used for the measurements described here, is based on the observation that, generally, the net heat of combustion is directly related to the amount of oxygen required for combustion (1). Approximately 13.1 MJ of heat are released per 1-kg of oxygen consumed. Test specimens in the test are burned in ambient air conditions, while being subjected to a prescribed external heating source. This technique is not appropriate for use on its own when the combustible fuel is an oxidizer or an explosive agent, which release oxygen. Further analysis is required in such cases (see Appendix X2). The heat release is determined by the measurement of the oxygen consumption, as determined by the oxygen concentration and the flow rate in the combustion product stream, in a full scale environment. The primary measurements are oxygen concentration and exhaust gas flow rate. Additional measurements include the specimen ignitability, the smoke obscuration generated, the specimen mass loss rate, the effective heat of combustion and the yields of combustion products from the test specimen. The oxygen consumption technique is used in different types of test methods. Intermediate scale (Test Method E 1623, UL 1975) and full scale (Test Method D 5424, Test Method D 5537, Test Method E 1537, Test Method E 1590, Test Method E 1822, ISO 9705, NFPA 265, NFPA 266, NFPA 267, NFPA 286, UL 1685) test methods, as well as unstandardized room scale experiments following Guide E 603, using this technique involve a large instrumented exhaust hood, where oxygen concentration is measured, either standing alone or positioned outside a doorway. A large test specimen is placed either under the hood or inside the room. This practice is intended to address issues associated with equipment requiring a large instrumented hood and not stand-alone test apparatuses with small test specimens. Small scale test methods using this technique, such as Test Methods D 6113, E 1354, E 1474 and E 1740, as well as ISO 5660 internationally, are based on a stand-alone apparatus, wherein a small specimen is tested within the equipment. Another small scale heat release test method, Test Method E 906, does not use the oxygen consumption technique. Throughout this practice, test equipment is referenced to provide helpful guidance to test facilities. Substitution of equivalent, or better, test measuring devices is permissible.1.1 This practice deals with methods to construct, calibrate, and use full scale oxygen consumption calorimeters to help minimize testing result discrepancies between laboratories. 1.2 The methodology described herein is used in a number of ASTM test methods, in a variety of unstandardized test methods, and for research purposes. This practice will facilitate coordination of generic requirements, which are not specific to the item under test. 1.3 The principal fire-test-response characteristics obtained from the test methods using this technique are those associated with heat release from the specimens tested, as a function of time. Other fire-test-response characteristics also are determined. 1.4 This practice is intended to apply to the conduction of different types of tests, including both some in which the objective is to assess the comparative fire performance of products releasing low amounts of heat or smoke and some in which the objective is to assess whether flashover will occur. 1.5 This practice does not provide pass/fail criteria that can be used as a regulatory tool, nor does it describe a ......
【中国标准分类号】: C80
【国际标准分类号】: 17_200_20
【页数】: 24P.;A4
【正文语种】: 英语

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ASTM[1] E2067-[1]

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