ČSN EN 12106   (643163) Plastové potrubní systémy - Trubky z polyethylenu (PE), síťovaného polyethylenu (PE-X) a neměkčeného polyamidu (PA-U) - Zkušební metoda odolnosti proti vnitřnímu tlaku po aplikaci squeeze-offu

Anotace textu normy ČSN EN 12106   (643163)

This document specifies a method to determine the resistance to internal pressure of polyethylene (PE), crosslinked polyethylene (PE-X) and unplasticized (PA-U) pipes to verify the condition of the pipe after being subjected to a squeeze-off procedure.

The equipment and procedure used to prepare the test samples and test parameters are given in this document, i.e.:

a) the diameter and series of the pipe to be tested (see 6.1),

b) the number of test pieces (see 6.2),

c) the parameters for the hydrostatic strength tests (see 7.6).

NOTE 1 - Further information on the squeeze-off procedure is given in EN 12007-2 and ISO/TS 10839 for polyethylene, and CEN/TS 12007-6 for unplasticized polyamide.

NOTE 2 - The squeeze-off procedure is specified to limit gas flow to allow maintenance, repair or to make network connections. Squeeze-off is used in an emergency for pipes carrying other media.