Recently

with the increasing capacity of power plant units

there are increasing number of accidents caused by age of steam and water pipe supporter.increases the reliability and safety of power plants operation. Cold and hot state test

performance test and stress check of supporters and hangers and evaluation of the pipe system show that the main reason of Failures of supports and hangers are seriously oil leak of dampers

ultimate pulling pressure position of dampers

the limit failure

the limit self-lock

the blocked expansion of the pipeline and the seriously askew of cross arm and the limit position pulling of the hanger. The operation of the supporters and hangers improved by the following methods

such as replacing the dampers with serious oil leakage

reserving a reasonable scale for the dampers at the limit position

replacing the damaged support hanger and components

repurchasing and installing the unqualified support hanger

reserving a reasonable gap for the failed pipe clamps at the limit position

and adjust the skewed cross arm

etc. The overall stress of piping system is optimized and meets the design and safety requirements. The occurrence of vicious accidents such as pipe cracking and steam leakage has been avoided.