GB/T 21476-2024 Active

This document specifies the requirements for test benches used to determine the fire resistance performance of non-metallic hose assemblies and non-metallic compensators with a nominal diameter not exceeding 150 mm. When the test benches meet the requirements, this document is also applicable to determining the fire resistance performance of non-metallic hose assemblies and non-metallic compensators with a larger nominal diameter. When exposed to flames, the test benches can withstand a working pressure of no more than 1.6 MPa. The flame propagation capability of non-metallic hose assemblies and non-metallic compensators cannot be tested using the test benches specified in this document. The test medium is only allowed to be water. To ensure the safety of the operators and the test benches in the event of damage to the non-metallic hose assemblies or non-metallic compensators during the test, the use of flammable test media is not permitted.