Allied PipeFreezing were contacted and were able to provide the expertise needed. The same day the initial call was made APS attended site and carried out an initial survey to find out what the works entailed.
The existing pipework had been in for many years. The existing 4” steel main was made up of screwed sections of pipe. It would not be possible to split any of these joints and reuse them so It was agreed not to disturb any of the existing joints and instead would cut out the existing leaking section and replace with a new section. As well as the leaking pipe it was noted that most of the supports for the pipework had corroded severely and most were not performing the task they were meant for. The first port of call was to replace all the existing supports with new to ensure the pipe was adequately supported before any modification works were undertaken.
Once the pipe was fully supported the pipe, which had been purged by the client, was cut out. Two flanges were welded to the open ends of the gas pipe. A new isolation valve was installed and the new piece installed. Once the pipework install was completed, the client carried out a strength test and the line was put back into service. Every obstacle was overcome and the repair was completed ready for the start of the new term.
