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  • Users: deanc
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  1. deanc

    How Low Can You Go With SA-105 Flange?

    See UCS-66,b Stress in tension, you may have an exemption here.
  2. deanc

    weldolet and hot tapping

    Well,I know that hot taps can be safe and they are common. However, the welder would rather be swimming in a pond full of alligators. The split tee at least "feels" better.
  3. deanc

    flange orientation

    http://www.pipefitter.com/ Explore
  4. deanc

    How Low Can You Go With SA-105 Flange?

    After more thought....The best bet would be to follow vesselfab's advice.
  5. deanc

    Thin Walled Nozzles through Thick End Plate

    Suggest you review UW-16 2007 edition.
  6. deanc

    Eaten-up internals in X-changers

    Depending on several things such as fluid,pressure,time ....weld,weld-o-lets on the vessel walls at 180 degree locations. Thread thru small nylon or teflon rods between the tubes. Tye off and plug with bull plugs.
  7. deanc

    Furnace tube pinch

    Assume you mean tube expansion. http://www.mgt-inc.com/tips/Technical_Tips_Vol_1_3.html Start here
  8. deanc

    Acceptable Leak Rate

    http://books.google.com/books?id=AOCn1A3B4LoC&pg=PA663&lpg=PA663&dq=flange+leak+rate&source=web&ots=whX8EfWTqz&sig=c-oPNjHfKmI-iIAU10W4UGtYIBI#PPA662,M1 http://www.flowcontrolnetwork.com/issuearticle.asp?ArticleID=191 If you have leaks, you do have problems. It will likely get worse.
  9. deanc

    Best shielding gas mixture????

    What size gas cup are you using? Too much or too little flow. Do you have any cooling water leaks? Soap all your gas lines and fittings, may have a pin hole or thread leak. Is your liner good? Are you using Anti-spatter? To much is bad. Any fans or vents in the area? Leave a bowl of milk...
  10. deanc

    Material Certifications

    Over the years I have asked to see all kinds of Certs. Seldom a problem, but sometimes it was found that what the manufactuer got was not at all what they had ordered. The paperwork should be part of the deal and if the supplier complains or resists, be very cautious. Got a fax in one time...
  11. deanc

    API 5L pipe not allowed in ASME section 1

    CodeJackal told you....but to put it simply, API 5L has 47 flavors and some are not suitable for steam.
  12. deanc

    need help identifying threads

    How bad is it? Does it have a seal? Have you contacted the original supplier? Can you recut to a standard thread? Can you cut off and replace? If you get in a pinch, sit down at bench and hand work them out, awl, Dremel, bent files. Been there before.
  13. deanc

    Overpressurization of heat exchanger tube side

    Why not install a vessel that has a MAWP to handle the spikes? You risk burst or collapsed tubes, seal failures, vessel failure. Sounds like a poor practice to me.
  14. deanc

    bend allowance for odd shapes

    The calcs. are good to start. But are you bending with a press brake or a leaf? Hot or cold? Free form or die? With the grain or across? These all make a difference. Go to the Fab Shop and ask. If you need something special, pay for a few samples.
  15. deanc

    Material for Chiiled Water System

    http://www.infratrans.gov.ab.ca/INFTRA_Content/docType306/Production/TechPres28.pdf http://www.google.com/search?hl=en&q=converting+a+closed+loop+system+to+glycol&btnG=Google+Search Have a look.
  16. deanc

    Weld repairs - ASME Section VIII

    metengr is correct. Many times a Major or Minor is addressed in the QC System. Such as: A Major would be repairs to the base metal and a Minor is repairs to a weld. But if you are behind and the completion date was yesterday, its all Major.
  17. deanc

    Tolerancing Dimensions for Custom Machinery Drawings

    TheTick I agree with each part of your post. I use the last one often.
  18. deanc

    HYDROSTATIC TEST PRESSURE TOLERANCE

    What you have is an old requirement for SecI. It has changed see 2007 ASME Sec I, PG-99.1 and Sec VIII Div 1, UG-99 (d).
  19. deanc

    Pressure Vessel Bulge Assessment

    corus: You are trying for a "use as is" so suggest you contact your Local Jurisdiction and Insurance Carrier before you proceed. May be a waste of time to recalc. I have pushed bulges back into place and done flush/window patches. But,why did this happen, have you cut coupons to check for...
  20. deanc

    ASME BPVC -IID

    If you are working to any of the ASME Construction Codes you must have it anyway. Part of the package deal.

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