A few examples of Piping Design / Analysis performed by Pressure Equipment Engineering Services, Inc. are as follows:
Fitness for service evaluation was performed for a large diameter piping system containing a new Pressure safety valve. To take care of the valve weight, new piping support location was added. The piping system was analyzed using the Pipe stress analysis software CAESAR-II. The sustained and expansion stresses in the piping were checked to make sure that all the pipe support locations specified were acceptable per the analysis. At the connection with the flare line, all the primary and secondary stress combinations were within ASME code allowable stress limits. At the connection with the 42” dia. pipe, the overstress condition was found for the given loads. It was recommended to use a 4” wide x 0.5” thick reinforcing pad. This eliminated the overstressing condition in the 42” dia. pipe. Thus, the existing pipe was fit for service with the new pipe support location and a new reinforcing pad at the intersection of 42” dia. pipe.