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Recent content by Whin

  1. Whin

    Tank Settlement Survey

    API 653 , Appendix B can be applicable for concrete ring wall tanks?
  2. Whin

    Tank Settlement Survey

    If there is no signs of any settlement in 10yrs of operation (during routine visual inspection), is it nescessary to conduct the soil settlement survey?
  3. Whin

    Deaerator Inspection Frequency

    The root cause of defects in the water box has been identified as thermal fatigue and has been addressed; furthermore, it does not affect the pressure component of the vessel nor the quality of BFW output.
  4. Whin

    Deaerator Inspection Frequency

    We have deaerator operational for a decade, during which we have conducted annual internal inspections focusing on weld magnetic particle testing and ultrasonic thickness measurements of the shell and heads. To date, no deterioration has been noted in these areas. However, we have identified...
  5. Whin

    Nozzle internal design pressure.

    The metallic inlet roof nozzle has suffered corrosion from flow erosion. We suggest a temporary repair using composite FRP wrapping. Should we consider the internal design pressure of the tank or that of the piping connected to the nozzle for this repair? The tank's internal design pressure is...
  6. Whin

    Boiler Inspection Software

    May i know what is the best Inspection Data Management Software for in-service Boilers in Petrochemical Plant?
  7. Whin

    Tank Settlement Survey

    Settlement survey was taken during hydrostatic test after tank construction, subsequent external visual inspection (5yrs of service) doesn't shows any signs of settlement. Is it mandatory to have another set of settlement survey as planned frequency?
  8. Whin

    Tank Settlement Survey

    Is it necessary to perform a routine soil settlement survey for in-service tanks that are supported by concrete ring wall, or is this requirement applicable only to tanks that rest on an earthen foundation (without ring wall)? Could someone provide a relevant reference standard for this...
  9. Whin

    Tank Soil Settlement

    Is it necessary to perform a routine soil settlement survey for in-service tanks that are supported by concrete, or is this requirement applicable only to tanks that rest on an earthen foundation? Could someone provide a relevant reference standard for this requirement?
  10. Whin

    Heat Exchanger one stream out of service

    The BFW preheater exchanger, featuring MP steam on the shell side, will be permanently decommissioned, while the tube side BFW will remain operational. The design pressure for the shell side is 24 Barg, whereas the tube side is rated at 88 Barg. The design temperatures are 390°C for the shell...
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