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  • Users: Sergio76
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  1. Sergio76

    SA-36 for low temp on non retaining parts.

    Hello everybody, i have a spherical desander at 5000 psi, which was constructed for the American market at MDMT-20, now the Canadian market is interested in this equipment but the MDMT is -40, the non pressure retaining parts such as name plate, lift lugs, skirt and base plate are made form...
  2. Sergio76

    pipe failure

    Hello all, I have some equipment as shown in the pictures that have a pipe failure at the support attached. This is a Vertical Recovery Tower 30" OD X 30' S/S operating at 50 PSI @ 100 F. According to the field foreman, the vessel started leaking 30 min after operation start. my concerns about...
  3. Sergio76

    Vent holes in a Skirt support

    Hello all, i have some vertical separator vessels with a skirt support, those are code vessels, my question: is it required per ASME code add vent holes in the skirt? if so, how many and what are their typical size and location? what is the code reference paragraph that state this requirement...
  4. Sergio76

    beam deflection L/360

    thread507-37706 Hello Everybody after reading the reference thread i just want to figure out the meaning of 360 on the deflection parameter, where this number came from? it has any units? if my deflection calculations are in metric units i use the same value? what are the conditions to compare...
  5. Sergio76

    nozzle pad installation

    Hello everybody, i just want to know if there are some requirements per ASME code in the installation of nozzle repad, if not, what is the standard practice on 2-piece pad installation?
  6. Sergio76

    anchor bolt calcs for skid

    i have various equipments mounted on a skid, i have the total wgt and wind load, this skid is anchor concreate bolted, what are the basic formulas to determine the bolt size and quantities, after some searching i found those calcs are besed on ACI 318-08, is there any free site to download this...
  7. Sergio76

    vessels in a barge

    I have a vertical vessel which will be operating on a barge, this is a huge vessel (102" OD x 732" overall dims including the skirt), what is the movement impact on the vessel thks and what procedure or formulas i have to consider to add that extra load on thks calc? Thanks.
  8. Sergio76

    skirt openings

    Hello guys, after reading some post about this topic, I just wonder if every time we have an opening in skirt support, it is required to replace the area?, what is the calculation method?
  9. Sergio76

    o-bround reinforcement

    Hello guys, I have a vert. heater treater vessel where the opening is an o-bround shape, vessel is 72" OD and the o-bround is 27"W x 48"H, to calculate if the reinforcement is required, as this is a large opening, probably i need to use appx 1-10, my question is how i treat the shape geometry...
  10. Sergio76

    min thinning allowance in formed heads

    When we are designing heads (ellip 2:1 or F & D) the result in code formulas give us the min required after forming, i know the thinning allowance depends of many factors from the fabricator, also the knucle radious could no be lower than 6% of OD (for F & D), so somebody could give some safe...
  11. Sergio76

    safety factor and joint efficiency

    I have a non-code vessel, SA-36 material, I am increasing the allowable stress to 23200 psi decreasing the safety factor to 2.5, I'm not performing any RT, so I'm using 70% efficiency, but with the thks I have my MAWP is still below my DP, can I increase my Efficiency to reach my DP keeping my...

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