February 14, 2014, the Xi'an International Trade Co. Lingke three staff members were invited to the company 6 # boiler feedwater piping electric valve stuffing box leakage with pressure plugging. The pipeline water pressure 13.5MPa, temperature about 170 ℃, due to the high pressure, high temperature, leakage volume, the diffusion of water ejected distributed to four weeks, were unable to close, to work to bring some difficulties. 

First, the workshop personnel with protective aluminum will take to contain the water column ejected dispersed, leaving part of the space operations, after the station staff to analyze the structure of the valve into operation, initially due to the leakage of a large amount of injected plastic packing boxes can not be stay inside, so plugging work has been no progress by further improving construction methods, the tenacious efforts of a few hours after they completed the plugging better job.