Dear Colleagues,
Could you please provide your expert opinion of whether deviations from the ASME Codes, particularly from hydrotest requirements in B31.3, are allowed at owner’s discretion?
My understanding always was that companies can deviate only from their own Standards and Specifications...
What system design factor f2 should be used for SUS, OPE and HYDRO cases in analysis of buried FRP pipeline as per UKOOA? I remember previously it was recommendation to run 3 separate cases with values as per attachment (0.67 for SUS, 0.83 for OPE and 0.89 for HYDRO)
Now I cannot find same in...
Dear Colleagues, in a course of review of stress analysis in oil treatment plant I came across of NPS 24” Sch.100 high pressure steam line at 320 deg.C and 11000 kPag. Line is on a pipe rack about 220m long and has 7 expansion loops. The issue is that there are only 4 line stops. Two pairs of...
I am a piping stress engineer currently developing a company procedure Acceptable Nozzle Loads for Process Equipment. We need this procedure because in the past we have seen equipment such as tanks and vessels supplied without any allowable external nozzle loads, with unreasonably low allowable...
Dear Colleagues
Please kindly share your expert opinion on application of Variable vs. Constant Springs and low friction TSP (PTFE) plates in combination with springs:
1. What variability/vertical travel of variable spring support is generally acceptable in front of static equipment (tanks...
Dear Pipers
I am performing flexibility analysis of piping on offshore oil platforms designed by European company for Asian market. Installation T=+30 deg.C, Design T varies from -40 deg.C to +120 deg.C for different lines.
Design group uses tight U-Bolts (without lugs) with spacing every 3-8...
Dear Pipers
Could you please shed some light on how to check for crushing load and for stress in thin-wall CS/SS piping to make sure they are not excessive for cases as follows:
- Bare pipe supported from the steel
- Pipe is on a shoe with no re-pad
If you can share a validated spread sheet for...
Could you please shed some light on how to check for crashing load and for stress in thing-wall CS/SS piping to make sure they are not excessive for cases as follows:
- Bare pipe supported from the steel
- Pipe is on a shoe with no re-pad
If you can share a validated spread sheet for performing...
Dear every piping/stress engineer
1). As per project requirements I need to come up with Trunnion support check calculation to make sure the stress at pipe-trunnion junction point do not exceed hot stress allowable. I also have to validate results produced by the given spreadsheet, developed...
Hello All
As a new member of piping design team I have to compute and deliver loads imposed by piping on a T-shaped pipe rack of petrochemical plant. These loads will be used by structural for pipe rack design. Wind, seismic snow etc loads are not a concern in this case.
After I calculated...
Hello All
As a new member of piping design team I have to compute and deliver loads imposed by piping on a T-shaped pipe rack of petrochemical plant. These loads will be used by structural for pipe rack design. Wind, seismic snow etc loads are not a concern in this case.
After I calculated...
Dear Pipers
Could you please help me to model the Spring Can with friction between load flange and bottom of shoe.
I have checked this with CAESAR Application Guide Chapter 4-19, but some people say it's not the bast way to follow.
There is an opinion that the only one +Y restrain with friction...
