Thermoplastics piping systems for underground non-pressure applications. Test method for leaktightness of elastomeric sealing ring type joints

Thermoplastics piping systems for underground non-pressure applications. Test method for leaktightness of elastomeric sealing ring type joints

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1   Scope

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:
  • — p1: internal negative air pressure (partial vacuum);
  • — p2: a low internal hydrostatic pressure;
  • — p3: a higher internal hydrostatic pressure.
It also describes the following four test conditions under which the tests are performed:
  1. a) Condition A: without any additional diametric or angular deflection;
  2. b) Condition B: with diametric deflection;
  3. c) Condition C: with angular deflection;
  4. d) Condition D: with simultaneous angular and diametric deflection.
The applicable selection of the test pressure(s) and the test condition(s) is specified in the referring standard.