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:
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a) Condition A: without any additional diametric or angular deflection;
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b) Condition B: with diametric deflection;
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c) Condition C: with angular deflection;
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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.