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Recent content by dungun

  1. dungun

    Curvature of reinf pad of lifting lug

    Dear All. Thank for your response. I will comeback to you.im outstation now. Cheers Dungun
  2. dungun

    Curvature of reinf pad of lifting lug

    Dear dhengr Sorry no sketch. We provide calc using WRC 107 - SATISFACTORY on the part as you mentioned. 4.1mm is the "bulge" at the middle... the welding ok. So many theory such as welding HAZ, expansion etc But i have only one - bulge! TQ Dear r6155 If omit .. mess to remove it. I think...
  3. dungun

    Curvature of reinf pad of lifting lug

    Dear r6155 [bluegreedy] TQ
  4. dungun

    Curvature of reinf pad of lifting lug

    Dear r6155 Thanks for the response, actually the Tolerance by End user is absent. This is make the problem started. My argument using UG80 (UG 82 .... I will check) TQ Dungun
  5. dungun

    Curvature of reinf pad of lifting lug

    Dear All. My fabricator installed 4 lifting lug on the 4m OD vessel with weight about 40MT. However the End User question (rejected) about curvature of the reinf pad for lifting lug, the curvature seem "bulged" due to the manual pressing forming. The "bulge" curvature height by 4.1mm from the...
  6. dungun

    Test Pressure

    G'Day all My Question, the system piping was designed as per ASME B31.3 and normally we hydrotested with 1.5xDesign Pressure as per clause 345.4.2. However the consultant interpret that the Hydrotest must follow ASME 16.5 Clause 8.2.2 which is 1.5xFlange Rating. My argument that ASME16.5 mean...
  7. dungun

    Heat Exchanger Tubes Leak

    Hi All I have one reboiler heatexchanger working in plant for 15months. The problem start appear on the month of 14. The tubeside medium is reflux hydrocarbon (ethane) about 35barg. On the shell ia R22 refrigeration medium working at about 17bargs. This reboiler start block/cloged after opening...
  8. dungun

    Certified True Copy

    Hello, My fabricators purchase the materials i.e ASME flange, elbow and fittings for process piping B31.3.The supplier provide only copy of Mill Cert and with stamped with "Certied True Copy" and some with "Certified match with Original". And with supplier name seperate stamp. In the code do we...
  9. dungun

    Cyrogenic Manhole

    RF - SPW Graphite Filler SS with Centering. Bolt Torquing Design Pressure : 78 barg Design Temp : -80C Oprating Pressure : 62barg Operating Temp : -70C Liquid HC Condensate Reflux and HC Gas on Top.
  10. dungun

    Cyrogenic Manhole

    Hi Friend I have problem with manhole low temperature suction drum in JT/TurboExpander section. The Design temperature minus 80C and design pressure 78barg. Operating pressure and temperature 62barg and minus 70C. Manholes 20"x600#. All Materials Stainless Steel 316. While shifting TExp to JT...
  11. dungun

    Vapour in LPG line

    Thanks All. pmover - about 1.2meter (Total head available = 2.5m) jeap - priming using vent to atm and P point back to the suction line (manually). After all priming ok,pump smoothe and eliver 240MT/day. But starting make crazy! The suction take from spherical tank to another farm.
  12. dungun

    Vapour in LPG line

    Hi, I have trouble every time to start the lpg pump. Before start I must prime around 20minutes before start the pump. Pictures - suction from spherical tank 12meter diameter, length around 12meter, size 3", temperature medium 12 to 45C, ambient 2 to 47C and suction strainer. Pump OH2 type. Some...
  13. dungun

    API2510 VS API2510A and VS API2218

    Hi, Some confusion!, I have LPG spherical with automatic deluge spray nozzle on the vessel and fix water monitors at 2 position around vessel plus one hydrant. If we refer to above API code, should that vessel to be apllied the fire proofing on the column?.
  14. dungun

    using pressure control valve as blowdown valve

    hello friend Agree that the PSV cant be used as BDV, but how about the PCV used for BDV?..
  15. dungun

    using pressure control valve as blowdown valve

    Hi JL I means that the Pressure Control Valves used as Blowdown valve (depressurized). How?? Regards
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