Htri software dimpled jacket3/10/2024 ![]() ![]() Obviously the end is near for this thing as the leaks will become more frequent, but as is typical the accountants need it to operate for another 2 - 3 years before they can come to terms with replacing the vessel. ![]() The stainless steel jacket is approximately 0.070" thick, while I suppose there may be an SCC angle to this as well lets assume for the time being we are dealing with primarily a pure fatigue mechanism. The jacket is operated at 60 psig Sat steam (designed for 100 psig)and very much in cyclic operation (2 hrs on, 1/2 hour off cycle repeated over a 24 hour period. Have vessel with an external ASME Section VIII Appendix 17 designed ss dimpled jacket assembly which is showing all the classic signs of age (30 yrs) with fatigue cracks developing at the toe of the condensate outlet nozzle, around some of the plug welds and at the jacket boundary welds. ![]()
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