Ditto on David's comments on finding the right packager. Just one major point, the cheapest packager will almost never give you the best value. Ariel is a great machine and we package them almost exclusively (we have about 1400 of these in our rental fleet).
No matter what course you take...
I am not too worried about it. We have decent SPAM software. As Art said, what you have done and what you are doing is a part of your credentials. On hindsight, I guess I should have put one of those extra character strings that needs to be manually removed.
Art,
I work for Compressor Systems, Inc. I sent David our website address earlier but it is down and the IT folks are working on it (www.compressor-systems.com) Our main fab shop is Midland. We have business units all over the gas patch from LA to NM to CO.
Both Hanover and Universal are...
Just FYI,
Just lately, Ariel has been actively pursuing the industrial markets that would normally want an API 618 type compressor. This is an active new market for them. In fact, we are starting to get more CO2 machines though our shop for the petrochemical industry. Ariel definitely wants...
sarahr,
I am well familiar with the program that David speaks of. Depending on your accuracy required, you may have to have the entire engineering process completed. By this, I mean all the pulsation vessels with internals, piping studies and the acoustical analysis. Without doing this work...
This is exactly the sort of thing that I am trying to address. My company supplies compression equipment for natural gas. Everything that we do is CL I, Div 2 and many of the "this is how we have always done it" methods are not even close to what is require by code.
It is sad to say that many...
Mechanical Vibration is created by rotating equipment that is not balanced. A rotor imbalance in a motor is very typical. A mechanical analysis will include dynamic driving forces (from this imbalance) as well as natural frequency studies.
Another source of vibratory forces is Acoustical...
As you gentlemen have been so much help in the past, I wonder if you would mind verifying my assessment regarding an IS device installation.
Basically, a 4-20 mA transmitter is connected to a zener barrier and then to a PLC. The transmitter has no hazardous ratings whatsoever. An IS circuit...
Metengr, I wonder if you read minds. This is exactly what I was thinking when I wrote the above including the critical transformation temperatures as the max.
However I need a correction to my previous as I had UG-56 which is actually UCS-56.
Thanks!
Gentlemen,
I appreciate the response. I have listed an example below with a few more questions at the end.
Example:
Project Manager A has a job with 2 vessels of the same thickness.
Project Manager B has a job with 6 vessels with the maximum one having a thickness of 1.5"
If, for economy...
A colleague of mine is upset with a request of our ASME QC manager. It involves the min hold time and temperature for stress relieving a large number of pressure vessels.
My colleague did the calcs and drawings with each showing the min required hold time and temperature for each vessel. Each...
Is nonincendive wiring required to be separated from other circuits like IS wiring? I have seen a reference supporting that this separation is required but I cannot locate it. It very well could have been a "recommended practice" from a customer or a manufacturer.
Does anyone know of a NEC...
The only people that can prevent this are the hiring managers. We are our own police force in this issue. I have not had a problem with fake credentials but I have had several problems with "claimed experience". Some of the things that we can do are:
1. Accept only graduates of ABET...
I have heard of one job where each weld pass had to be RT'd. I do not know if ASME Class 2 or Class 3 mandates this process. Needless to say this was a nuclear power job.
This is directly related to repair costs after the job goes into service (I cannot even imagine how high a repair cost...
Yes, I have had to modify my view on 661 loads being high. Since the original posting, I have noticed quite a few specs requiring more.
I am still very curious as to how manufacturer's say that they will comply and then still use the maximum temperature & pressure rating of a B16.5 flange...
Capntom,
I have been working in the high pressure gas industry (read "high pressure" as 3,000 - 7,500 gas compression). It is critical that systems be structurally tested by hydro.
Hydro is not a leak check. Special precautions are always taken when doing pneumatic leak tests. First of...
PZas has brought up a good point. My posts refer specifically to leak checking as it was my understanding that you have already proven the design. This can only happen after a design is proven. If codes require you to do a proof test, that must be done with water.
Leak checks should be done...
For industrial components where capital costs is minimized by huge volumes, I would use helium with a mass spec. This is not cheap but I used to work for a global supplier of high purity gases. Given the volumes required, I can help you look at an order of magnitude sizing for gas or liguid He...
Capntom,
What you use really depends on your process. If I were leak checking something for liquid service, then I would probably spec out air. Whether the air was dried or not would depend on if the process is moisture tolerant.
For inert gas service, it would depend on how leak free you...
