Thanks for your interest and comments. I'll have more information next week but it seems that the interior insulation has gaps and the exterior insulation is not that good. The cracks I mentioned before are significant long complete fractures of the external skin (between the insulations). This...
Severe cracking has occured in a power station gas turbine exhaust duct, 30mbar pressure and 500C temperature with turbulent conditions and high temperature ramp rates. The cracked pressure boundary is 8mm Coreten A steel material. The duct has internal and external insulation ('warm' casing)...
John:
Take your point on the moments. Since the new restraints are acting on the displaced shape of the pipe, most piping analysis programs (linear elastic and undeformed geometry) may not be able to determine the restraint forces required. How is this done?
A reheat pipe has been operating for approx. 30 years between boiler and turbine. It is proposed to cut the pipe at the turbine end to replace a nozzle. Design of restraints is required to maintain the cold pipe position for rewelding.
The initial construction required cold pulling. My question...
