Pipe repairing in tidal area

toric high pressure inflatable jacks to repair CP for offshore
Apr 10 2015 OIL & GAS

A pipe 40” of a large oil producer ensuring the supply of tankers is cut because of significant oil leaks due to corrosion. Due to the importance of this main pipe, a doubling of the pipe must be carried out as quickly introducing a length of 150 m of pipe 32 “into the pipe 40” corroded.

The customer has asked Musthane engineers to design a pneumatic system allowing both the guidance of a pipe relative to each other but also the filling of concrete in the gap of the two pipes.

Musthane designed inflatable toric cushions Mustpress set up at the end of the pipe 32 ”; once set up, these rubber toric cushions Mustpress then retained a pressure of 15 bar.

For safety reasons, two expandable toric cushions Mustpress are made. These cylinders have a by-pass to isolate in order to have a double safety shutter in case of failure of one of them. A polyurethane membrane is also achieved ; mounted on the 32″, it protects the airbags during process. Once the pipe 32″ set up, the cushions are inflated at 20 bar during all the annular Groutage operation (40/ 32″).

Musthane® designed and manufactured all the equipment, which one is very specific (need of the tools) within 12 days.