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  • Users: ET50
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  1. ET50

    Constructed in accordance with...?

    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...
  2. ET50

    OSHA and ASME compliant belt guard question

    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...
  3. ET50

    API 614 lube oil question

    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...
  4. ET50

    CRN in Alberta for Pressure Vessel and Piping System

    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...
  5. ET50

    True Position or Perpendicularity

    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...
  6. ET50

    Quick parallelism question

    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...
  7. ET50

    Production Revision Lettering Method

    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...
  8. ET50

    Company changes policy on revisions - is this used by others?

    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...
  9. ET50

    Welding Flanges to stub connections on Brazed Plate Heat Exchangers

    I hope this is the right place to ask this question. If you have Brazed Plate Heat Exchangers that are CE approved (meet ASME requirements), and they are supplied with stub connections, can flanges be welded on these stub connections legally per code(s) or do they require additional testing and...
  10. ET50

    "R" Stamp required or not?

    We recently recieved a pressure vessel and installed it in our system. Before actually putting it into service we discovered a pinhole leak on one of the weld seams on the shell during a Nitrogen purge/leak test of other devices. We sent the vessel back for repair, and it arrived back without an...
  11. ET50

    Welding pipe to pressure vessel nozzle

    If you have a code certified pressure vessel, with a stub pipe coming off the side and bottom head of the vessel, are you allowed to weld a pipe directly to it? Is this acceptable, or do all connections need to be flanged or screwed into a threaded connection on pressure vessels. The vessel is...

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