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  1. us1612

    Fuel Oil Heating

    Hi JMW! Regarding the safety I have to admit that I haven´t really thought about this matter in this case so far, having in mind, that for example in cracking furnaces the naphtha is always preheated in the convection section. Well, there is some diference between fuel oil and naphtha, so I...
  2. us1612

    Fuel Oil Heating

    Hi, I´d like to know if anyone has experience with heating fuel oil in a convection section of a fired heater where the flue gas contains SO2. The problem is the low tubewall temperature. Is there adequate material, or do I have to heat it in an extra heat exchanger by steam? Thanks for your...
  3. us1612

    Furnaces courses

    John Zink offers a course at their european HQ in Luxemburg. I think it´s a 4 days course and the fee is something like 600EUR. Can say anything about quality because my boss didn´t let me go . . . But included is the "John Zink Combustion Handbook" (750 pages) which I have actually on my desk...
  4. us1612

    water seal for flares

    hi psebes, disadvantages: - continuous water supply - continuous waste water generation - need of waste water treatment - steam tracing or steam injection depending on location advantages: - reliable installation / proven technology this is what i am thinking of at first . . . but as i am...
  5. us1612

    Eddy Current Testing vs Pressure Testing

    As it is part of their code i guess they won´t. But the exchanger will be pressure tested anyway, only after welding. I see the advantages of pressure testing before welding: You can inspect the tubes easier and you won´t have any repair welding in case the bundle doesn´t pass the pressure...
  6. us1612

    Eddy Current Testing vs Pressure Testing

    Well, it´s about manufacturing heat exchanger. The code of the company we´re working for demands pressure testing of every single tube before welded in the tube sheet. The tube supplier says eddy current testing was sufficient and wants to double the price of the tubes if pressure testing is...
  7. us1612

    Eddy Current Testing vs Pressure Testing

    Hi, I would like to know if eddy current testing can fully substitute pressure testing of tubes. THANKS
  8. us1612

    NaOH Pipe Sizing

    bngreene is referring to metal. you should as well consider HDPE or LDPE as tube material which is resistent to 50% caustic.
  9. us1612

    Quality Verification of manufacturers

    Hi, I´m looking for a company in europe that is specialized in expediting especially vessel manufacturers. Anyone can help???

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