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{"extract_results":{"Document":{"Metadata":{"Title":"","Author":"","CreationDate":"","ModificationDate":"","Size":""},"Catalog":{"Entries":[]},"Chapters":[{"Title":null,"Content":[{"Type":"Footer","Data":"2"},{"Type":"Footer","Data":"83"}],"SubChapters":[{"Title1":"1总则","Content":[{"Type":"Text","Data":"1.0.1为了规范爆炸危险环境电力装置的设计·使爆炸危险环境电力装置设计贯彻预防为主的方针，保障人身和财产的安全，因地制宜地采取防范措施，制定本规范"},{"Type":"Text","Data":"1.0.2本规范适用于在生产、加工处理转运或贮疗过程申山玖或可能出现爆炸危险环境的新建、打建和改建工程的爆炸危险区域划分及电力装置设计："},{"Type":"Text","Data":"本规范不适用于下列环境：1矿并井下;2制造、使用或贮存火药、炸药和起爆药、引信及火工品生产等的环境；3利用电能进行生产并与生产工艺过程直接关联的电解、电镀等电力装置区域；4使1强氧化剂以及不用外来点火源就能自行起火的物质的环境；5水、陆、空交通运输工具及海上和陆地油开平台；6以加味天然气作燃料进行采暖空调、烹饪、洗衣以及类化的管线系统：7医疗室内；8灾难性事故。"},{"Type":"Text","Data":"1.0.3本规范不考虑间接危害对于爆炸危险区域划分及相关电力装置设计的影响。"},{"Type":"Text","Data":"1.0.4爆炸危险区域的划分应由负责生产工艺加工介质性能、设备和工艺性能的专业人员和安全、电气专业的工程技术人员共同商议完成。1.0.5爆炸危险环境的电力装置设计除应符合本规范外，尚应符合国家现行有关标准的规定。2"},{"Type":"Footer","Data":"品"}],"SubChapters":[]},{"Title1":"2术语","Content":[],"SubChapters":[{"Title2":null,"Content":[],"SubChapters":[{"Title3":"2.0.1闪点Hlash point","Content":[{"Type":"Text","Data":"在标准条件下，使液休变成蒸气的数量能够形成可燃性气体或空气混合物的最低液体温度2"}]},{"Title3":"2.0.2引燃温度ignition temperature","Content":[{"Type":"Text","Data":"可燃性气体或蒸气与空气形成的混合物·在规定条件下被热表面引燃的最低温度。"}]},{"Title3":"2.0.3环境温度ambienttemperature","Content":[{"Type":"Text","Data":"指所划区域内历年最热月平均最高温度+"}]},{"Title3":"2.0.4可燃性物质lammable material","Content":[{"Type":"Text","Data":"指物质本身是可燃性的，能够产生可燃性气体、蒸气或薄雾。"}]},{"Title3":"2.0.5可燃性气体或蒸气[lammable gas or vapor","Content":[{"Type":"Text","Data":"以一定比例与空气混合后，将会形成爆炸性气体环境的气体或蒸气。"}]},{"Title3":"2.0.6可燃液体flammable liguic","Content":[{"Type":"Text","Data":"在可预见的使用条件下能产生可燃蒸气或薄雾的液体。"}]},{"Title3":"2.0.7可燃薄雾flammable mist","Content":[{"Type":"Text","Data":"在空气中挥发能形成爆炸性环境的可燃性液体微滴。"}]},{"Title3":"2.0.8爆炸性气体混合物explosive gasmixture","Content":[{"Type":"Text","Data":"在大气条件下·气体蒸气薄雾状的可燃物质与空气的混合物，引燃后燃烧将在全范围内传播。"}]},{"Title3":"2.0.9高挥发性液体highly volatile liguid","Content":[{"Type":"Text","Data":"高挥发性液体是指在37.8℃的条件下，蒸气绝压超过276kPa的液体·这些液体包括T烷、乙烷、乙烯、丙烷、内烯等液体·液化天然气，大然气凝液及它们的混合物："},{"Type":"Footer","Data":"3"}]},{"Title3":"2.0.10爆炸性气体环境explosivegasatmosphere","Content":[{"Type":"Text","Data":"在大气条件下，气体或蒸气可燃物质与空气的混合物引1燃后能够保持燃烧自行传播的环境"}]},{"Title3":"2.0.11爆炸极限explosivelimitN爆炸下限（LEL）lower explosive limit","Content":[{"Type":"Text","Data":"爆炸下限（LEL）lower explosive limit一"},{"Type":"Text","Data":"可燃气体、蒸气或薄雾在空气中形成爆炸性气体混合物的最低浓度。空气中的可燃性气体或蒸气的浓度低于该浓度·则气体环境就不能形成爆炸。"},{"Type":"Text","Data":"2爆炸上限（UEL）"},{"Type":"Text","Data":"upperexplosivelimit"},{"Type":"Text","Data":"可燃气体蒸气或薄雾在空气市形成爆炸性气体混合物的最高浓度。空气中的可燃性气体或蒸气的浓度高于该浓度，则气体环境就不能形成爆炸。"}]},{"Title3":"2.0.12爆炸危险区域bazardous area","Content":[{"Type":"Text","Data":"爆炸性混合物出现的或预期可能出现的数量达到是以要求对电气设备的结构安装和使用采取预防措施的区域"}]},{"Title3":"2.0.13非爆炸危险区域non-hazardous area","Content":[{"Type":"Text","Data":"爆炸性混合物山现的数量不足以要求对电气设备的结构、安装和使用采取预防措施的区域。"}]},{"Title3":"2.0.14区zone","Content":[{"Type":"Text","Data":"爆炸危险区域的全部或一部分。按照爆炸性混合物出现的频率和持续时间可分为不同危险程度的若十区"}]},{"Title3":"2.0.15释放源sourceofrelease","Content":[{"Type":"Text","Data":"可释放出能形成爆炸性混合物的物质所在的部位或地点。"}]},{"Title3":"2.0.16自然通风环境natural ventilation atmosphere","Content":[{"Type":"Text","Data":"由于天然风力或温差的作用能使新鲜空气置换原有混合物的区域。"}]},{"Title3":"2.0.17机械通风环境artificialventilationatmosphere","Content":[{"Type":"Text","Data":"用风扇、排风机等装置使新鲜空气置换原有混合物的区域。"}]},{"Title3":"2.0.18正常运行normaloperation","Content":[{"Type":"Text","Data":"指设备在其设计参数范围内的运行状况"}]},{"Title3":"2.0.19粉尘dust","Content":[{"Type":"Text","Data":"在大气中依其自身重量可沉淀下来，但也可持续悬浮在空气中一段时间的固体微小颗粒，包括纤维和飞絮及现行国家标准《袋式除尘器技术要求》GB/T6719中定义的粉尘和细颗粒。"}]},{"Title3":"2.0.20可燃性粉牛combustible dust","Content":[{"Type":"Text","Data":"在空气中能燃烧或无焰燃烧前在大气压和正常温度下能与空气形成爆炸性混合物的粉尘、纤维或飞絮。"}]},{"Title3":"2.0.21可燃性飞絮conductive flyings","Content":[{"Type":"Text","Data":"标称尺寸大于500um，可悬浮在空气中，也可依靠自身重量抗淀下来的包括纤维在内的固体颗粒"}]},{"Title3":"2.0.22导电性粉心conductivedust","Content":[{"Type":"Text","Data":"电阻率等于或小于1X10°0·m的粉尘"}]},{"Title3":"2.0.23非导电性粉尘non-conductive dusi","Content":[{"Type":"Text","Data":"电阻率大于1X100·m的粉尘"}]},{"Title3":"2.0.24爆炸性粉尘环境explosive dust atmosphere","Content":[{"Type":"Text","Data":"在大气环境条件下，可燃性粉尘与空气形成的混合物被点燃后，能够保持燃烧自行传播的环境。"},{"Type":"Text","Data":"2.0.25重于空气的气体或蒸气heavier-than-air gases orvapors"},{"Type":"Text","Data":"相对密度大于1.2的气体或蒸气。"},{"Type":"Text","Data":"轻于空气的气体或蒸气、lighter-than-airgasesorva2.0.26pors"},{"Type":"Text","Data":"相对密度小于0.8的气体或蒸气。"}]},{"Title3":"2.0.27粉尘层的引燃温度gnition temperature oldustlayer","Content":[{"Type":"Text","Data":"规定厚度的粉尘层在热表面上发生引燃的热表面的最低温度。"},{"Type":"Text","Data":"2.0.28粉尘云的引燃温度ignitiontemperatureofdust cloud炉内空气中所含粉尘云发生点燃时炉子内壁的最低温度。"},{"Type":"Footer","Data":"En"}]},{"Title3":"2.0.29爆炸性环境explosive atmospheres","Content":[{"Type":"Text","Data":"在大气条件下，气体、蒸气粉尘、薄雾、纤维或飞絮的形式与空气形成的混合物引燃后，能够保持燃烧自行传播的环境"},{"Type":"Text","Data":"设备保护级别（EPL）Llevel2.0.30eguipmentprotection"}]},{"Title3":"2.0.30设备保护级别（EPL）equipment protection level","Content":[{"Type":"Text","Data":"根据设备成为引燃源的可能性和爆炸性气体环境及爆炸性粉尘环境所具有的不同特征而对设备规定的保护级别"},{"Type":"Text","Data":"D"}]}]}]},{"Title1":"V爆炸性气体环境",