消防给水用PSP化学管材公称压力等级的选用

Selection of PSP Chemical Pipe Nominal Pressure Grade in Fire-fighting Water Supply

针对PSP化学管材在消防给水系统中管材压力等级选用方面存在标准不一致的问题,通过研究规范、管道标准、规程之间试验压力标准名称、试验时长等方面的差异,提出PSP化学管材在临时高压消防给水系统中压力等级确定的一般方法。结果表明:按照《埋地塑料给水管道工程技术规程》(CJJ 101—2016)确定的PSP化学管道公称压力等级,大于按照《消防给水及消火栓系统技术规范》(GB 50974—2014)常规理解确定的管道公称压力等级,因此,为满足工程需要,应按照《埋地塑料给水管道工程技术规程》(CJJ 101—2016)确定PSP化学管材的压力等级。

Selection standards of PSP chemical pipe nominal pressure grade are inconsistent in fire-fighting water supply systems.Therefore,a general method for determining the PSP chemical pipe pressure grade in a temporary high-pressure fire-fighting water supply system was proposed through investigating the differences in test pressure standard name and test duration among specifications,pipeline standards and regulations.The PSP chemical pipe nominal pressure grade determined in Technical Specification for Buried Plastic Pipeline of Water Supply Engineering(CJJ 101-2016)was greater than that in Technical Code for Fire Protection Water Supply and Hydrant Systems(GB 50974-2014).Therefore,the PSP chemical pipe pressure grade determined in Technical Specification for Buried Plastic Pipeline of Water Supply Engineering(CJJ 101-2016)should be selected in order to meet the engineering needs.