A purchase order came through that says "The system will be constructed in accordance with appropriate ASME standards...."
For the purpose of this discussion it is piping per B31.3 and B31.8, however the PO doesn't specifically say that, and the this was intentional by the customer so we...
I understand the requirements for a belt guard required for 2 sprockets and a synchronous belt per OSHA and ASME standards. The belt in question is part of skid mounted mechanical apparatus. If this skid has an enclosure (4 sides with doors and a roof) does it still require an OSHA and ASME...
We have a dry compressor (API 619), and it requires an API 614 lube system (Chapter 3). I say it requires an API 614 lube system because of what API 619 says. If our system will be installed anywhere in North America I'm assuming it will require an API 614 approved lube system since we will be...
"Is this going to be a skid? All the equipments will be shipped together on a structural skid?"
Yes that is correct, Everything will on a structural skid and the skid will be inside a container.
Thanks for the quick and informative responses. The Pressure Vessels we have are less than 6 months old, but the piping has not been fabricated yet. This will be quite the learning experience I believe. Any thoughts on the time frame associated with this if we're starting from zero.
It looks like we need CRN certification for a pressure vessel, associated piping, and fittings for a system being manufactured in the USA and being shipped to Alberta. My question is, do we need to have a CRN before fabrication begins or can we certify our vessel and piping system after it's...
Sorry I can't provide a sketch right now, maybe I can describe it better. Imagine a box with flanged connections protruding from it (call them pins if you like). The position of the flanges or pins must be accurate enough for mating flanges or other pins (other assemblies) to mate to them in a...
I have a part that looks like a box with 4 flanged conections protruding from that box. 2 are on one side and 2 are on the opposite side. Pipes with flanges connect to the flanges on the box. Currently the designer has coordinate dimensions locating the flanges with a perpendicularity call out...
Okay and thanks to all. I understand now that where the feature control frame is makes no difference. I will have a tolerance stack up going from one dimension to another however. One dimension is +/- 0.30 and the second is +/- 0.60.
Thanks again!
It's a little odd (to me) how they have it called out. What I want is for each surface (1 to the right and 1 to the left)to be independantly parallel to Datum A. I would think the best way is to have 2 callouts, each independant and with it's own dimension from A. The way they have it is a...
Datum A has 2 surfaces parrallel to it. One surface to the right of Datum A, and 1 to the left of Datum A. Should there be 2 seperate dimensions originating from Datum A with 2 seperate parralelism callouts, or can you dimension from Datum A to one surface, and then a second dimension from the...
KENAT,
Form, fit function would still get a new part number. What I see as an issue is once a drawing is production released most if not all revisions will be minor, relative to form, fit, function. So why do an Alfa Numeric revision in the middle of strictly Alfa revisions. I see this as...
I'm aware of the standards of revision control, however I have a question as a result of a new company policy. I asked this in the document control area as well but I think this is a more appropriate place to ask this.
First our old revision policy was to start with A at the initial Production...
Keeping this simple, our old policy was to use numbered revisions (1,2,3,..) for pre released documents and change to A,B,C... for revisions that were production released.
New policy is to keep pre production the same but to have 2 different types of revisions for Production released documents...
