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  • Users: rezapayman
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  1. rezapayman

    shell type selection

    Dear Friends I am working in an oil and gas Industry.I always asked to design specific type of Exchanger (like AES)due to thermal requirements.I would like to learn how does a Heat exchanger designer select shell types for his requirement? divided flow or two pass shell?split flow or kettle...
  2. rezapayman

    Set-through type Nozzle

    Dear Friends Could you please advise me what is the meaning of Set-Through type Nozzle in this statement"All Nozzle and manholes shall be designed as set through type with double welded ,inside and outside"
  3. rezapayman

    Thickness through the weld

    Dear Friends I would like to know what is the meaning of thickness through the weld in ASME B&PV ?
  4. rezapayman

    reinforcement of multiple opening

    Dear Friends For reinforcing of three opening which distance between their centers is less 1 1/3 of their diameters,what consideration could i mentioned?Could i overlap one of my reinforcement plates over another reinforcement plate?
  5. rezapayman

    number of mixer

    Dear Friends I like to know is there any rules for number and selection of mixer which we consider for a storage tanks.
  6. rezapayman

    material selection

    Dear Friends I like to know is there any refrences for material selection of pressure vessel.I want to select material for high H2S services and project spec do not mention it clearly!
  7. rezapayman

    (H/D )ratio

    Dear Friends I would like to know what is H/D ratio(Height/Diameter) in storage Tank Design.which references could be useful for this reason?
  8. rezapayman

    sizing of sump for roof drains

    Dear Friends I want to know how can i calculate volum of sump tank for roof drain nozzels? I have 40 m diameter (floating roof)Tank and i assume to use 4*4" roof drain nozzel (and also sump )for draining rainfall. best wishes
  9. rezapayman

    Support leg in floating roof tank

    dear friends For designing of support leg in floating roof tank,how we connect large bore pipe (as a sleeve)to small bore pipe as a deck support? is it welding or some special option?
  10. rezapayman

    bleeder vent size and length

    Dear Frineds I have a 54 meter floating roof storage tank and i would like to know what size of blideer valve should i use ?what about it length?is there any refrences for it? best wishwes
  11. rezapayman

    sizing of nitrogen purge nozzle

    Dear Friends I have a pentane tank 20000 m^3 capacity and i want to know what size of nozzle can i use for Tank Nitrogen purge ?is there any references for it?
  12. rezapayman

    sizing of Nitrogen purge nozzle

    Dear Friends I have a pentane tank 20000 m^3 capacity and i want to know what size of nozzle can i use for Tank Nitrogen purge ?is there any refrences for it?
  13. rezapayman

    exchanger on the tank

    hi guys I am involving in design of pentane storage tank and a condenser for it.It should be on top of pentane storage tank as per process data sheet.could you please give me an advice that how can i support this condenser on top of Tank? Since this is shell and tube Exchanger ,how do i...
  14. rezapayman

    A 283 gR C & A 285 gr C

    Dear Friends I would like to know what is a difference between A283 gr c and A285 gr c .I reviewing an spec and my contactor ask my to replace A283 gr c with A285 Grade c. Can you give me an advices? regards
  15. rezapayman

    diffference between ASTMA435 and ASTM A578

    Hi I would like to know what is a difference between ASTM A435 and ASTM A578?.I am reviewing an pressure vessel spec and i should decide to choose one of this standards to notify. best wishes

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