Specially-Designed Six-Part Self-Sealing Repair Clamp Prevents Costly Shutdown
Specially-Designed Six-Part Self-Sealing Repair Clamp Prevents Costly Shutdown
2 PagesSpecially-Designed Six-Part Self-Sealing Repair Clamp Prevents Costly Shutdown Project: On-Line Leak Repair of Crack on High-Pressure/ High-Temperature Critical Line Location: United Kingdom TEAM Service: On-Line Leak Sealing and Repair Need and Challenge: The ExxonMobil Mossmoran Chemical Plant detected a small crack on a critical line, operating at pressures of up to 84 bar g (1220psi) and temperatures of some 480°C. The crack had formed between the 16-inch pipe and the branch connection that attached it to a 20-inch header. Although the repair was not termed immediately dangerous by ExxonMobil engineers, repair was clearly essential and, given the operating pressures and temperatures involved, it was initially thought that shutdown was the only option. The plant at Mossmorran
