Is there a proper definition of what 'balanced' nozzle reinforcement means? I wrote it into my spec, thinking it was understood , but it is not a term used in BPVC and my client seems to think it means a dollar plate. Client does not accept my interpretation.
Yes, before you ask: I HAVE searched this subject on Eng-Tips.
For the last couple of decades I have worked in an industry that prohibits the use of backing strips in Pressure Vessels. Why?
OK, I know what backing strips are for, and when they are appropriate, but I do not understand why there...
I have been wracking my brains over the theory behind sleeve bolts (some people call these compensators).
It is a sleeve to extend the stud for high temperature service.
Every time I try to do the theory I seem to come up with a different answer. Example: one time I try to maintain constant...
I see some nit-wit has effectively added the ABSA IB05-004 joint efficiencies into the A5 calc in Division 1. Thankfully, this has not been done in Division 2 (AFAIK): probably because those Div2 people understand PV engineering - and know that the old rules (no JE) worked. Hopefully UG-37h...
API 661 had, some time ago, a clause to the effect that fans had to be designed such that, by increasing fan blade angle, a 10% increase in air flow can be achieved. Some of the major operators understood this to mean "and thus the motor must be sized for this increased airflow". Often, in specs...
There are a number of threads in this forum ( thread338-159732 , thread338-171512 , and thread338-130588 ) where the same contributor consistently states 'with authority' that a corrosion allowance is not required if you don't expect uniform corrosion.
Now then, as a vessel engineer in oil and...
Hello. Here is a question about the formulas used in TEMA 8th edition for the design of expansion bellows (called FSE). Actually, I doubt if anybody knows the definitive answer - this is more of a heads-up to my fellow engineers that there is yet another problem in TEMA. I've been wanting to...
Hello,
I'd be very interested to read your opinions about good practice in the design of a FTS exchanger with a thick walled expansion joint.
Is it acceptable for it be used as the limiting component in MAWP? If so, what is the procedure for calculating MAWP of the element?
I ask because...
Is TEMA RCB-5.141 method valid for the split backing ring of a U-stamped exchanger? The method appears to permit the use of 100% moment instead of the 200% used in ASME div 1 App 2.9. The justification for that approach seems to be that certain geometries inherently resist bending as the...
