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  1. flinana

    PSV ON SITE testing

    Thanks once again, very clear now. We will have to have that facility, its contractual, so, no arguing there.
  2. flinana

    PSV ON SITE testing

    That is correct, fuel and oil pipes and tanks.
  3. flinana

    PSV ON SITE testing

    Thanks again, what if we are talking about fuel and oil? Same would apply regardless of the product?
  4. flinana

    PSV ON SITE testing

    Thanks, the client has included this in their specification. However, hard to know what is meant by verified by site test. "The valves shall have a test certificate issued by the manufacturer with inspection authority approval and shall be verified by site test. "
  5. flinana

    PSV ON SITE testing

    Hi, is there any norm that states that PSV calibration must be tested on site before commissioning? thanks
  6. flinana

    Means of egress in fuel oil tank area platforms (NFPA, OSHA)

    Thank you!
  7. flinana

    Means of egress in fuel oil tank area platforms (NFPA, OSHA)

    Hi, I am trying to figure out how many accesses are needed in operation ad maintenance platforms on top and around fuel oil tanks. Cant seem to find any specifics in NFPA or OSHA requirements. I wonder if anyone can point me in the right direction. thanks,
  8. flinana

    Tricentric butterfly valve

    Hi, Our EPC contractor installed atricentric butterfly valve as a control valve, after about less than a year it is showing signs of poor regulation. Sometimes the valve won't respond or responds late. We have changed the positioner but that seems to be ok. I said from the beginning that this...
  9. flinana

    ST extraction system

    I mean ST (Steam Turbine)sorry.
  10. flinana

    Steam cycle feedwater preheater level compensation

    thanks for the article, our levels are local indicators are from Ktek as well and the signal is transmitted by a Vegaplus radar.
  11. flinana

    ST extraction system

    We have noticed that for some reason in order to achieve full power we need to close the 3rd extraction from the LP TV. How can this affect the TV?
  12. flinana

    Steam cycle feedwater preheater level compensation

    They ate shell and tube preheaters. I always understood as you say that it would need to be compensated for temperature and not pressure. Apparently the pressure is used to compensate for the turbulence that occurs when steam condenses from the steam extraction.
  13. flinana

    Steam cycle feedwater preheater level compensation

    Hi, Do level transmitters in FW preheaters need to be compensated for pressure?
  14. flinana

    Dearator Pressure

    It does fluctuate with load and how is it related to the condenser problema?
  15. flinana

    Dearator Pressure

    This is how our system is configured. There are two valves from the main hp header with the fucntion od prewarming the DA. The SP is about 1 bar so these only open during start up after that it is closed. The pressure comes from the TG extraction and from the blowdown.
  16. flinana

    Dearator Pressure

    thanks, all temperatures going into de TG are pretty much the same. I believe there is a preheating valve from the hp header leaking to the DA or the continuous blowdown valve. These valves could provide this excess in pressure to the DA.
  17. flinana

    Dearator Pressure

    Thanks, apparently the problem is that the setam is condensing at the vents tip because it is colder, and thefore it accumulates water!! weird We run 3 50MW plants and the one giving 1 MW less happens to have about 0.5bar nore pressure in the DA.
  18. flinana

    Dearator Pressure

    30ºC for starting up and 50ºC above 5 MW
  19. flinana

    Dearator Pressure

    Since the dearator is being heated by the turbine extractio I thought it would have an effect. Another thing I find strange is that one of the vents in the deaerator spits water while the other doesnt and it is working at its normal level.
  20. flinana

    Dearator Pressure

    Hi, How can the dearator pressure affect the production of a Stem Turbine?

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