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  1. starfarooq

    Inspection Interval of Ammonia Storage Tank

    As per RBI analysis of our Ammonia storage tank, the inspection interval is 15 years ( EFMA Criteria was used to calculate the inspection interval). Now we have read somewhere that by carrying Fracture Mechanics analysis, the inspection interval can be extended by 10 years. Does anyone know...
  2. starfarooq

    Cold Box Heat Exchanger

    I can share some literature. Please send me your email
  3. starfarooq

    Traces of Ammonia in CO2 gas in Urea plant

    We are running a fertilizer complex consisting of Ammonia and Urea plants. Ammonia and CO2 gas are separately fed into Urea plant from Ammonia plant. The CO2 gas is compressed to 143 bar before entering into Urea reactor where it mixes with Ammonia to form Ammonium Carbamate solution. We are...
  4. starfarooq

    Inspection Frequency of HP Loop of Urea plant

    We are operating a Urea plant built on Stamicarbon technology. The High pressure synthesis loop (consisting of Reactor and stripper and HP Carbamate condensers) is made of Safurex material. We had inspected it with Stamicarbon experts in 2011 and they advised to keep the next inspection after 6...
  5. starfarooq

    welding overlay for compensating thickness loss

    can somebody tell about some company which provide the services of repairing such vessels?
  6. starfarooq

    welding overlay for compensating thickness loss

    we have a pressure vessel of which the bottom shell portion (cylindrical) severely corroded due to which there is a thickness loss of 8 mm (original thickness was 34 mm and now it is 26 mm). There is an option of replacing the bottom shell course by new one but it will take a lot of time and we...
  7. starfarooq

    Forged vs. Rolled tube sheet

    ASME Section VISION Div.1
  8. starfarooq

    Forged vs. Rolled tube sheet

    Does the code allow using tube sheet made from hot rolled plate instead of forged one?
  9. starfarooq

    Separate Design Codes for shell and tube bundle of the same HX

    We have a vertical U-tube bundle type heat exchanger installed at our ammonia plant (Waste Heat Boiler). It was manufactured in 1975 on Stoom Weezen code. Now the bundle has completed its service life and we want to replace it, while keeping the existing shell unchanged. Our technical...
  10. starfarooq

    In-situ machining of heat exchanger pass partition

    Thank you very much for valuable inputs
  11. starfarooq

    In-situ machining of heat exchanger pass partition

    I am searching for a machine which can do onsite machining of round flange faces as well as pass partition slots of heat exchangers. Are there any such machines available which can do both the jobs?
  12. starfarooq

    Portable air conditioner for confined space entry

    I sorted it out... Actually I was using improper search phase while googling. When I used the word "spot cooler" it gave a lot of results.
  13. starfarooq

    Confined space entry in hot vessels

    I have searched many websites but could not find the required result
  14. starfarooq

    Confined space entry in hot vessels

    I am searching for a trolley mounted portable air conditioner with hose for cool air (up to 60 ft long). This is required for quick entries into vessels which take several days when cooled with conventional air blowing. Is there some product available in the market?
  15. starfarooq

    Portable air conditioner for confined space entry

    I am searching for a trolley mounted air conditioner with cool air hose (up to 60 ft long). This is required for quick entries into vessels which take several days when cooled with conventional air blowing. Is there some product available in the market?
  16. starfarooq

    On site Valve Seat Lapping Services

    Is there any vendors available in the middle east area? That is relatively near to our location.
  17. starfarooq

    On site Valve Seat Lapping Services

    We have some heavy Rockwell Edward valves (up to 24", #1500 size)installed at our plant. These valves are welded (no flanges) and dismantling is very difficult for seat lapping at our workshop. We are in search of some vendor who can provide on-site seat lapping services of these valves. Our...
  18. starfarooq

    Tube sheet thickness vs. tube thickness

    I have checked the data sheet of the original tube bundle, it says as follows: CODE: Design: Stoomvezen Construction: TEMA R Does Stoomvezen takes tube thickness into account when calculating tubesheet thickness?
  19. starfarooq

    Tube sheet thickness vs. tube thickness

    One of the heat exchangers at our plant is near to completion of its service life and now we want to retube its U-Bundle. Its a high pressure tube bundle with channel head as a integral part of it. Now for longer service life we want to change the material of the tubes from existing CS to SS...
  20. starfarooq

    Maximum service temperature of materials

    So you mean to say that the maximum allowable temperature depend upon the operating pressure?

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