Directing againt the problem of joint interface misplacement occurred between the main steam pipeline and the main steam valve of a 220 MW heat-supplying unit in one power plant

the causes resulting in misplacement and its influence upon thrust on the port of said main steam valve have been analysed

and disposal measure

i.e.decreasing the thrust of main steam pipeline in vertical direction onto the port of main steam valve through the load redisposition of supports and hangers

has been put forward

and the safety of said measure being evaluated.After implementation of the measure

the thrust of pipe-line system excerted onto the port of main steam valve has reached the requirement of design.