阀门试验.防火试验要求

[中文适用范围]： 适用于软座和金属座隔离阀（具有一或多个关闭件）的防火试验要求及试验方法。本文件不适用于对正常阀门组件中所包含的手动操作的变速箱或其他类似机构之外的其他类型执行器的试验要求。在本文件所述环境下运行的其他类型的执行器可能需要特殊保护，其防火试验超出了本文件的范围。 规定了以下测量和评估准则：a)通过阀座泄漏；b)外部泄漏；c)双座阀空腔 relieving 的过压；d)操作性。 按照本文件进行测试的阀门，可以通过扩展测试规则将其防火试验资格扩展到未经测试的尺寸、压力等级和材料。 根据本文件先前版本进行测试的阀门的防火测试报告，在与本版本第6.7条规定的完整且符合要求的防火测试报告一起提交时可接受。任何未在6.7中要求的数据是否被接受或拒绝，由购买者自行决定。 [外文原描述]： This document specifies fire type-testing requirements and a fire type-test method for soft- and metal-seated isolation valves with one or more obturators. It is not applicable to the testing requirements for valve actuators other than manually operated gearboxes or similar mechanisms when these form part of the normal valve assembly. Other types of valve actuators (e.g. electrical, pneumatic or hydraulic) can need special protection to operate in the environment considered in this valve test, and the fire testing of such actuators is outside the scope of this document. This document specifies the measurement and assessment criteria for: a) through-seat leakage; b) external leakage; c) cavity overpressure relief of double-seated valves; d) operability. This document specifies the rules whereby the fire-type testing qualification for a valve can be extended to untested sizes, pressure ratings and materials of construction of the same basic design type. Fire test reports of valves tested according to previous editions of this document are acceptable when submitted together with the full and compliant fire test report as per 6.7 of the edition under which it was tested. Any data missing as required from 6.7 within the fire test report are accepted or rejected at the purchaser’s discretion. NOTE For the purposes of this document, the terms “fire type-test” and “fire test” are synonymous.