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  1. TBP

    I'm Not A Structural Guy, But This Looks Bad...

    https://www.zerohedge.com/markets/discovery-massive-bridge-crack-forces-us-coast-guard-close-portion-mississippi-river
  2. TBP

    CSA B149.1 Gas Code

    We've been asked to look at installing a gas monitor to detect leaks in the natural gas metering room of a commercial building in Alberta. Does anyone know of a requirement for this? I don't, but I'm a little out of touch with the gas code, particular as it applies to Alberta, and my code book...
  3. TBP

    NPS 2 Class 3000 Screwed Couplings Alert

    Several of these fittings from an Italian manufacturer have failed during hydro-testing in the Edmonton area of Alberta recently. Go to http://absa.ca/ to view the alert.
  4. TBP

    Ecc Reducer On Pump Suction Piping

    Is there ever a set of circumstances in which it desirable to install an eccentric reducer in a horizontal suction line to any pump (an ammonia pump, in this case) with the flat side down instead of up? In any installations I've seen, been involved with, or read about - for any pump - the flat...
  5. TBP

    Inconel And Chlorine Dioxide

    I'm only on the fringe of this situation, and it isn't an area I normally get involved in. A vendor has recommended an inconel X-750 spring in a metering pump check valve for chlorine dioxide service. This is to be installed in a location with very awkward access, so we don't want to be buying...
  6. TBP

    ASTM A356 LF2

    I don't normally get involved with materials like this. Just for my own info, can someone tell me what this material is, and what are it's typical applications? Thanks.
  7. TBP

    15 PSIG Threshold Being Reduced To 10 PSIG?

    I was speaking with a safety valve salesman today who indicated that the current 15 PSIG threshold for boilers, pressure vessels and pressure piping being considered "high pressure" is going to be reduced to 10 PSIG next year. Any truth to this?
  8. TBP

    B31.3 Exclusions

    The vast majority of my work falls under ASME B31.1. I haven't had much contact with B31.3, and am holding off buying the code until the update is available. In the meantime, I have a question about the exclusions: "B31.3 excludes (a) piping systems designed for internal gauge pressures above 0...
  9. TBP

    Stainless Steel To Copper Pipe Weld

    Hi: I'm not getting much response to this question on the piping board, so I'll try it here. I need to get from 304 or 316 SS to type 'L' or 'K' copper. This transition piece would be the final step of a shop fabricated assembly. It's important that joint left for the field installation crew be...
  10. TBP

    Stainless Steel To Copper Pipe Adapter

    Hi: I've got an unusual application (for me, anyway) which requires an adapter to take me from stainless steel pipe (probably sch 10) to type 'L' copper pipe. This would all be 2" and under, and needs to meet ASME pressure piping code standards for oxygen service. I'd rather not get into...
  11. TBP

    B31.1 Stub-Ins

    I'm involved with a retro-fit project that calls for 8" drips to be stubbed-in off the bottom of a 10" steam main. It's currently being determined if the main is Sch 40 or 80. The branch pipe will be a properly bevelled "fish-mouth" with a full-penetration weld connecting it...
  12. TBP

    Toluene/xylene Vent Condenser

    OK, chemical-types, I'm not getting much response to this question over at the "Heat Transfer & Thermodynamics" forum, so I'll try here. I need to select a heat exchanger for a vent condenser, and the plant people have very little information. Depending upon what they're doing, they...
  13. TBP

    Toluene/xylene Condenser

    I have to select a heat exchanger for a vent condenser using cooling tower water. Of course, the people who need this done have almost no information. They just know that they need a vent condenser. Depending upon what they're doing with the process, either toluene or xylene could be used. The...
  14. TBP

    Thermal Conductivity of #2 Fuel Oil

    We're working on a steam to #2 fuel oil heat exchanger application, and are having problems coming up with all of the required data. There's plenty of info for pumping and piping calcs, but not much for heating this oil. Does anyone know the thermal conductivity of #2 oil?
  15. TBP

    Steam Accumulator Sizing

    I'm on the fringes of a project gone bad. The customer has had a steam accumulator sized and installed (by others), that I think is grossly undersized. Having said that, I've never actually sized an accumulator before. The service conditions are: operating steam conditions are 220 PSIG (sat)...
  16. TBP

    ASTM Vs SAE Fasteners

    I've tried asking this on the ASME (mechanical) part of this site a couple of weeks ago. Nothing so far, so I'll try it here. Is substitution allowed for B7 bolts/studs & 2H nuts with the much more readily available SAE Gr 5 and/or Gr 8 fasteners for pipe flanges under codes like the ASME B31.1...
  17. TBP

    ASME Fasteners Vs SAE Fasteners

    Is there any cross-referencing for B7 studs/bolts & 2H nuts and SAE Gr 5 & Gr 8 bolts and nuts for flanged joints under codes like ASME B31.1? I see huge numbers of the SAE grades (usually 5 because they're cheaper) in all kinds of industrial steam and compressed air piping (flange bolts). I was...

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