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  1. yanuarsaja

    Aluminum dome design

    Hi all, thank you for your advice. the proposal of Aluminum dome is for Remin water and for Potable water. another proposal is for COndensate tank which has internal floating roof inside. another problem to be considered is about bolt retightening during operation since as we know the...
  2. yanuarsaja

    Aluminum dome design

    Hi all. As per subject, i dont have experience for aluminum dome roof design and the contractor propose to use it with construction cost and schedule benefits. I knew the design is listed in appendix G. What are considerations to use aluminum dome roof (advantage and dis. of it) since the tank...
  3. yanuarsaja

    Storage Tank spec.

    Hi.. Yes.. Clarification is important to estimste capex,complexity and also sometimes the schedule. For general spec.. We need clarification for the minimum diameter, and for more detail shall be shown in each individual tank data sheet. As you mention each tank may have different purpose and...
  4. yanuarsaja

    Hydrotest Fluid : Cl content

    Hi, I read some spec for vessel,for hydrotest purpose max. Chlor is 30 ppm I think,it will applicable for CS and SS material. Another reference said for Shell and Tube Heat Exchanger (stainless steel).. Shall have Chlor content 25 ppm. Question: i think both PV and STHE should have same...
  5. yanuarsaja

    Internal FLoating Roof Requirement

    Hi all... Sorry for unclear question. To be honest.. I am new in designing the storage tank. Attached vendor drawing from existing equipment. There is a air gap between liquid level and the floating roof = half Dia. Of ponton. I think,1st question is about the concept how to select type of...
  6. yanuarsaja

    Pipe Thickness

    Hi LittleInch, Thank you for a great explanation. [cheers] Yes MJCronin.. This will be a good start for me to understand about pipe class development. Thanks all. Yanuar.
  7. yanuarsaja

    Internal FLoating Roof Requirement

    Hi...thanks for the input. The fluid is condensate and we olan to use ponton type. There is circulation vent will be installed on the tank. I think we also wlwill use alumunium floating roof. Another question, is iit mandatory the liquid directly contact to floating roof? We keep some distance...
  8. yanuarsaja

    Fabricated 4way cross section

    hi, for special design, better to perform finite element analysis (FEA) to ensure stress integrity of the equipment/Component. And to ensure the integrity of product that you have fabricated just follow normal inspection/testing, UT and hydrotest for welding strength.
  9. yanuarsaja

    Pipe Thickness

    Hi, i found in some calculation procedure/criteria from various spec to calculate thickness of piping: 1. a. For Class 150 and 300 systems: The maximum pressure rating in accordance to the Temperature- Pressure Rating Tables in ASME B16.5 is used. b. For Class 600 and above: Design...
  10. yanuarsaja

    Painting requirement on duplex material

    Hi Syahar1975, Duplex is CRA material, but Painting requirement is mostly depend on Operating Temperature. in Some Project specify, for Operating Pressure Above 60 deg, so it need to be painted.
  11. yanuarsaja

    Internal FLoating Roof Requirement

    HI all, as per the Tittle, is it Non Mandatory/Optional to Install Secondary Seal. Refer to API 650 Appendix H : "H.4.4 Peripheral Seals In addition to the required floating roof primary peripheral seal, secondary peripheral seals shall be provided if specified on the Data...
  12. yanuarsaja

    Storage Tank spec.

    HI, thanks again for the sharing. The ManHoles quantity is writen in project/Client spec depend on the Tank Diameter. for ex. for dia less than 42 m, the spec request to have 2 Manholes as minimum. For above requirement, it is still debatable.
  13. yanuarsaja

    Storage Tank spec.

    HI MJCronin, Thank for the related forum. Basically, the requirement is clearly state in the specification size of Man Hole shall be 30",and Dia < 42 m shall have 2 Shell Man holes as minimum. There is challege for small tank, and also for cost point of view, It means even for small tank let...
  14. yanuarsaja

    Storage Tank spec.

    Hi all, thank you for the input. The storage tank will be designed as per API 650 not AWWA D100. refer to your feedback, for the out side, fillet weld is mandatory but for inside, seal weld is sufficient rather than fillet weld. Yes, cost of overhead welding will also be cosidered for this...
  15. yanuarsaja

    Storage Tank spec.

    Hi all, i am new in Storage Tank area, i have question: - is continously filled weld mandatory for roof plate lap joint if a tank roof is internally lined or coated (both inside and outside)? or seal weld is enough? - Emergency Vent requirement, is there any mandatory requirement to use it...

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