Perform hydrostatic test. In order to comprehensively check the installation quality of pipes, the pressure test shall be carried out according to the test methods stipulated in the code for construction and acceptance of water supply and drainage pipe works, and the allowable seepage water quantity shall be carried out according to the standards of the steel pipe.
Check radial deflection values. In accordance with the requirements of the specification, the FRP pipe installation shall be completed within 24h, the initial radial deflection of the pipe shall be tested, and the pipe shall not be raised, flattened or otherwise mutated.
As the glass pipe between the use of socket type, double "O" type sealing ring connection, so each installation of a pipe, it is necessary to bear in the socket to suppress, in order to detect double "O" type sealing ring sealing effect. The pressure test pump passes directly through the test hole on the top of the pipe. The water pressure of the pipeline working pressure of 1.5 times after the pump stops (during the operation to open the drain valve exhaust), observation of 2min, the pressure drop value does not exceed the test pressure and the nozzle 5%, no leakage, nozzle pressure test is qualified. If the pressure drop is faster, the sealing effect is poor and needs to be reinstalled to ensure the overall pressure test of the FRP piping system is successful.
