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  • Users: nur12
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  1. nur12

    Agitator Nozzle Flange Face Roughness Requirements

    Hello, We are planning to install an agitator in the bottom head of the vessel. My question: are there any specific requirements to the roughness (AARH) of the face of the flange connected to the mounting flange of the agitator?
  2. nur12

    Professional Liability Insurance

    I am a mechanical P.Eng. I am just starting to work as a contractor for an engineering consultant company. My contract with the Company states that I am responsible for buying liability insurance. Could anybody tell me how much a typical annual premium for professional liability insurance and...
  3. nur12

    Saddles "MDMT"?

    Hello, Is it correct to use the acronim "MDMT" if talking about vessesl saddles? Fo rexample, if the vessel saddles to be exposed to -50 deg C, shall I mention MDMT or MMT (minimum metal temperature)= -50C? I was under the impression that "MDMT" applied only to pressure envelope. Thanks.
  4. nur12

    ASME Code Case 2211

    Hello, I can not find in our library any reference to ASME Code Case 2211 "Pressure Vessels with Overpressure Protection by System Design". Is this a separate document or it is a part of the Code? Thank you.
  5. nur12

    ASME Section VIII Div. 2 - Full Range Pr. Cycle Definition

    Hi, What is "full-range pressure cycle"? Thanks.
  6. nur12

    Vessel vs. Column - Ratio?

    Hi, I have a simple question - from which length / diameter (or diameter / length) ratio the vertical vessel is considered a tower (column)? I have a Pressure Vessel handbook, but there is no information about this particular question. Thanks!
  7. nur12

    Hydrotest Pressure on Vessel Nameplate

    Hi, In our project specification we've asked the Vendor to hydrotest vessel to 1.3 MAWP (new& cold). I've got a question from them - which hydrotest pressure shall be mentioned on the vessel nameplate, 1.3 x MAP new&cold or 1.3 MAWP (the pressure of the test done at the field)? Their concern...
  8. nur12

    Flare Stack Aircraft Warning Lights Requirements

    Hi, I'm evaluating the flare stack bid proposal. The flare is 37 m high. One Vendor had included in the quote the aircraft warning lights, but the other one did not - he had mentioned that per ICAO recommendations, it is not needed for the flare of this height. The question: is ICAO the only...
  9. nur12

    Flare Stack Flame Monitoring Options

    Hi, I'm doing a bid evaluation for flare stack and try to evaluate the options for pilot flame monitoring: thermocouples, UV or infrared monitors, ot acoustic monitors. Do you have expierence with any of this? What is your favorite? Why? Thanks.
  10. nur12

    How many manways per vessel?

    Hi, I can't find any info in the Code regarding correlation between vessel length and quantity of the manways required. Is there anything (except common sense) to justify how many manways shall be on the long vessel (9 m and up)? Thank you.
  11. nur12

    NDE before / after PWHT?

    Hi, I have a question regarding performing NDE on the vessel joints. The Code requirement is to do NDE (RT & UT) before PWHT. Out Client's spec requires it before and after PWHT. The Vendor (due to extremely, uncompromisingly tight schedule) offered to perform it as per Code, before PWHT...
  12. nur12

    Glycol / Water Heater Capability

    Hi, We've got an existing Glycol / Water Heater (for glycol tracing), and now I have to evaluate if we can turn up fuel gas rate to get more heat... Is there a mechanical limitations on maximum temperature? I'm new to boilers - do you have any suggestions?
  13. nur12

    Flex hose for pump (HP, corrosive service)

    Alining the pump and pipe connections had been a continuous strauggle at the field, so we decided to use flexible connection for Cat / Reda M520 HPS ( as least for suction side). The problem is - service is corrosive (sea water, so SS probably can't handle it) and pressure is fairly high - up to...
  14. nur12

    Tank Calibration

    There are two currently approved methods of tank calibration - optical and laser. Is it true that laser method is faster and more accurate? Which one do you prefer?
  15. nur12

    Valve for sand application

    Hi, Which kind of valve would you suggest for sand application (not slurry, just crude oil / water mix with a small fraction of sand)? Our valves started to leak (even with sealant), so we try to replace it. We want to use a gate valve, but are concerned that the bottom seating area will simply...

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