Based on the examination and adjustment experience of supports and hangers in recent years

the common problems occurred were systematically summarized and the reasons were analyzed.Combined with the actual cases

solution methods were proposed for these problems like pipe settlement

abnormal thermal expansion and vibration etc.Design and installation defects were the main problems for the new unit's supports and hangers.Therefore

systematical examination and complete regulation should be conducted for the supports and hangers before the unit put into service.If a wide range of replacement of insulating material or pipe is needed

the stress in piping system should be recalculated

and to prevent the force equilibrium of pipes from destroying

corresponding adjustment should be done on the affected supports and hangers.