地下非压力应用热塑性塑料管道系统.弹性密封环式接头密封性的试验方法

[中文适用范围]： 本文件规定了测定埋地热塑性塑料非压力管道系统弹性密封环型接头密封性的测试方法。 除非参考标准另有规定，试验在下列基本试验压力下进行： ——p1：内部负气压（部分真空）； ——p2：低内部静水压力； ——p3：较高的内部静水压力。 它还描述了进行测试的以下四种测试条件： a) 条件 A：没有任何额外的直径或角度偏转； b) 条件B：有直径挠度； c) 条件C：有角偏转； d) 条件 D：同时有角度和直径偏转。 参考标准中规定了测试压力和测试条件的适用选择。 [外文原描述]： This document specifies a test method for determining the leaktightness of elastomeric sealing ring type joints for buried thermoplastics non-pressure piping systems. Unless otherwise specified in the referring standard, the tests are carried out at the following basic test pressures: — p 1 : internal negative air pressure (partial vacuum); — p 2 : a low internal hydrostatic pressure; — p 3 : a higher internal hydrostatic pressure. It also describes the following four test conditions under which the tests are performed: a) Condition A: without any additional diametric or angular deflection; b) Condition B: with diametric deflection; c) Condition C: with angular deflection; d) Condition D: with simultaneous angular and diametric deflection. The applicable selection of the test pressure(s) and the test condition(s) is/are specified in the referring standard.