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Thank you TD2K I understand what you say, in other words you say that calculating the size of the p.s.v must be based on the compression unit to be installed on, especially the inlet flow capacity. If so, practically, the flow capacity of the p.s.v should be equal (at least) or greater than the...

Thank you TD2K I'll try to make myself more clear.. Suppose I am a pressure vessels manufacturer (just the vessels without the compression units), I must drill a hole into the vessel and weld an openning for the safety valve! Then, what should be the size of that hole/openning? Remember: In...

Hi everyone, I have to determine the size of safety valve for an air pressure vessel. I found in ASME and BS 5500 a procedure to calculate the size of safety valve, which relates the mass flow capacity to the: pressure, temprature, discharge area, s.v coefficient, and air parameters. This can...

Hi everyone, I have to determine the size of safety valve for an air pressure vessel. I found in ASME and BS 5500 a procedure to calculate the size of safety valve, which relates the mass flow capacity to the: pressure, temprature, discharge area, s.v coefficient, and air parameters. This can...

Thank you all, Guideon

Hi everyone, I am from the previous generaion of engineers, prior to the FEA widely usage.I intend to study (by myself) this subject, and I wish to get your proffessional recommendations/tips for basic books that I can study from (basic principles, easy to understand, includes examples &...

Thank you again Brian, Guideon

Thank you Brian, I found (simple geometry) that you are right, it should be b=2x! I also lie on your experiance in the aircraft industry and accept the conservative approach you discribed. Guideon

Hi everyone, Thanks for the answers, Brian, You are right, I found something like your answer in my notes, with one little correction 2b=x, and the only problem with this assumption is, that the bending stress equation you get is ?=3P/t^2, which is x independable (means that no matter what is...

Hi everyone, Recently I faced a problem in calculating bending stress in a long UPN profile "flange" due to concentrated force. It seems that the regular/familiar formula for bending stress in a finite/short element does not applicable in local bending of long/infinite beam. See sketch attached...

Hi Determ I have ISO 4310 but unfortunately it is not practical enough for the purpose I need. If you looked at the attached std you'll see the difference. I do not have the other std you stated, and hence I do not know if it answers my questions. If you are familiar with these stds/ subject- I...

Sorry for the inopperative link at the original masssge. The correct link was uploaded by cloa (Petroleum). Thank, Guideon

Hi everyone, I was looking for a std to calculate stability of truck mounted crane. Recently I found an australian std "australian code of practice for crane installation on truck" (I think it is a part of 1418 au std), and I found it simple and practical. But, when I tried to solve the example...

Thank you all for the info. Guideon

I could not ask a better answer than that. Thank you for the useful info. Guideon

Hi to everyone, I have a problem with sizing pipe threaded elements. I am looking for guide rules that with simple external meassurement I'll be able to determine the element size such as safety valves,threaded pipes,pressure gages,caps etc. To clarify my question, hereby an example, when I...

RebelBrill Hi, Thank you for your reply, but I think that you are wrong, because even in one ply (as you can see in several catalogues)there is a significant difference in SWL when the thickness increases(what I am trying to say is that SWL for one ply 4 mm thickness is greater than one ply 3...

Hi, I have read Lift-it catalogue and I found out it is very professional and useful . I have some questions in the subject and I'll be grateful for professional answers. I found out that there is a direct relationship between SWL and the width of the strip (1600 lbs/in of width for nylon...

Dear gr2vessels I already did it, but they have not answered. That is why I ask the forum. Thank you Guideon

Dear sir I found out that some of the hooks (crosby's & other's) are marked with two numbers separated by hyphen such as 13-8, 10-8, 7/8-8. What these numbers (the first number and the second number) mean? Is these numbers come from standard requirement? If positive – please note the standard...