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  • Users: cwood3
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  1. cwood3

    API 650/653 Fillet Weld Base Metal Thickness w/Impact Testing

    I need a tank expert. In welding the annular floor plates to the shell plates, where floor plate thickness is 3/8" (P-No. 1, Group 1) and the shell plate is 1-1/4" (P-No. 1, Group 3) and impact testing at -25F is required................. If the PQR/WPS is generated via a V-Groove test weld...
  2. cwood3

    B31.3 Minimum Fillet Weld Size (special case)

    Here's one for you guys..................... Here is the scenario. The applicable code is ASME B31.3. A53, Gr. B pipe. 26” Std, hence, 0.375” wall thickness. Welding a split “Tee” fitting on for a hot tap operation. The split “Tee” fitting material is A516, Gr. 70 and is 1” thick (for the...
  3. cwood3

    API 1104 (20th Ed.) Branch Test Destructive Testing Specimens

    I overhear a lot of stuff in my office. I'm always interested in the "correct" answers to most of these arguments. I did a search here already but am still a bit perplexed. Say a welder is taking a 12" "butt" and 12"-on-12" "branch" test (for procedure qualification and/or welder qualification)...
  4. cwood3

    Molten Sulfur Pipeline Integrity Assessment

    I ran across a situation yesterday that I haven't encountered before. A facility has a 2000' long 12" Std, Class 150 molten sulfur transfer pipeline. It operates at ~300F, less than 100 psig. The concern is that 3-4 years ago, it was noticed that the line had obviously undergone some thermal...
  5. cwood3

    3R Bend/Ell in CADWorx

    OK, I'm a little rusty with my AutoCAD/CADWorx Plant design, but I need to add an 8" 3R Ell/Bend to my piping spec. I'm desperate......please help.
  6. cwood3

    Pumping Crude From a LACT Unitto a Pipeline

    So there is a crude oil storage/stock tank. It feeds oil through a LACT Unit via the LACT Unit charge pump. A backpressure valve at the LACT Unit discharge holds approximately 35 psig backpressure on the LACT Unit. The crude discharge from the LACT Unit goes to a "PD" pump where it is then...
  7. cwood3

    Monitor PLC Remotely

    I have a compressor station that is equipped with a "Station PLC" that runs everything. There is also a remote field office that monitors several of the station parameters via SCADA. In other words, an operator can be at the field office and look at a screen that displays the current...
  8. cwood3

    Fin Fan Process Cooler

    I'm sitting on the sidelines at work listening to two views on how to control gas temperature when using a "Fin Fan" type cooler. The concern is that in the winter the gas needs to stay at 85F. The new cooler is a dual fan model using two (2) 50 HP electric motors. (this in the South Texas...
  9. cwood3

    Reuse of Stud Bolts/Used Stud Bolts

    Beyond good engineering practices and quality issues in general (also PCC-1, Appendix N), are there any specific codes, regulations, guideline, recommended practices for reusing stud bolts for flanged connections on either pressure vessels and/or pressure piping? I do not want to use...
  10. cwood3

    Instrument Air Linetype

    Anybody have a ".lin" file for an instrument air line that looks similar to: ---//---//---// .................???? jcwoodall@att.net thanks
  11. cwood3

    Back To Non-Circular Nozzles

    Yes, I have read about all I can locate, on here and on the net. There must be about a kajillion Firetube Reboilers (U-tube configuration) that utilize an "ob-round" nozzle/flange on the end of the semi-elliptical head. The topic of ASME Code calc's seems to involve a slight degree of voodoo...
  12. cwood3

    Dual Pressure Chamber Vessel

    I'm trying to figure out to do this: I have a vessel that is a still column/reflux accumulator. Let's say 16" O.D. The still column is a simple cylinder with an ellipsoidal head on each end. The reflux accumulator is a cylinder with an ellipsoidal head on the bottom, and the top end of the...
  13. cwood3

    Control Valve Sizing for Amine Service

    #1, I am mechanical, not process/chemical/instrumentation. Heck, actually right now I am just hiring myself out to do some CAD work for various entities. I got interested in control valves (Fisher D-body style) and what makes the able to do what they are supposed to do. So naturally I start...
  14. cwood3

    AutoCAD Plant 3D 2010 Laptop Workstation

    I use AutoCAD Plant 3D and P&ID 2010.....alot. Recently, my job has involved doing as much work out in the field as in the office. I also run programs like HYSYS Compress and several others related to process plants and piping. I'd really like a laptop (i'd just as soon build my own) that was...

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