受限空间内的所有动火作业必须要有动火作业许可证和受限空间作业许可证及作业危险性分析。
All hot work in confined space must have work Permits of the hot work and confined space and Job Hazard Analysis.
通过对探测器电路的具体分析，进一步阐明自动火灾离子感烟探测器的相关功能。
And it elaborates certain functions of ion sensing smoke detector through-the concrete analysis of the circuit.
以油气场所为对象，根据不同性质的危险区域，着重分析了油田施工动火方面的防火防爆问题及采取的安全措施。
The site of the oil and gas construction is taken as an object. The fireproof and explosion protection during firing is analyzed, and the safety measures are adopted, based on various risky areas.
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