Structural Restraint for Cracked Steam Line
Outline of Problem
The clamp was required to restrain the full axial pressure load (about 100 tonnes f)
It had to pre-tensioned so as to remove the axial stress from the pipe
The clamp was to be installed with the pipe de-pressurised
The pipe could be de-pressurised for only a short period of time and would still be very hot – speed was of the essence
The clamp needed to maintain the pre-tension with allowance for differential thermal expansion
Restraint designed using 3D modeling software.
Innovative design validated using finite element analysis
Project completed in 32 days (initial site visit to installation)
600 man hours expended on design and engineering
Full workshop test completed prior to installation
Assembly on-site took just 8 hours (with the pipe still hot)
For the nearest general Service Delivery Center (SDC)
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