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q source of materialsthe user may restrict sources of fabrication materials if there is a restriction the prospective manufacturers must be informed
q explain about horizontal vesselshorizontal vessels shall preferably be designed for two saddle supports attached by welding design of saddle
q explain about vertical vesselsvertical vessels shall normally be designed as self-supporting units and shall resist overturn based upon wind or
q show the vessel supportsapproved materials and allowable stresses shall be used for vessels and their supportsfor structural shape support members
q show the vessel internalsfunctional design of trays and other removable internals are outside the scope of this documentremovable internals shall
q vessels resting on concrete foundationsfor vessels resting on concrete foundations the allowable concrete bearing stress shall be 750 psi 5 mpa
q explain working of nozzlesnozzles supporting agitators pumps or other mechanical equipment shall be suitably reinforced to withstand the mechanical
q flange facing and surface finishraised face flange facings are preferredflat face flanges to be used only when mating with like equipment
slip-on flangesslip-on flanges are limited to use under the following conditionsasmeansi b165 standard forged flanges for design pressures and
q flange bevel and lap ring weldthe fillet weld attaching the lap ring to the shell shall be an equal leg fillet weld with the leg dimension equal to
q lap-type flange-to-shell clearancelap-type flange-to-shell clearancethe difference between the flange id and the shell od shall not exceedbull116
custom-designed lap joint flangespractices relative to lap-joint flanges that experience has shown will result in a level of damage tolerance
q flanged pressure vessel nozzlesthe designer is responsible for ensuring that the facings bolt circle number of bolts and size of bolts of vessel
q formed heads of vesselsformed heads are generally of 21 semi ellipsoidal form but other heads may be used such as hemispherical torispherical
q what is vertical spoilersvertical spoilers - use a three-start system of short vertical spoilers arranged in a helical pattern on the top third of
q wind induced vibration of vertical vesselsvertical vessels having a height-to-diameter ratio hd does not include insulation thickness but does
q design loads and load combinationsthe designer shall determine the following loads and specify them on the data sheet design loads are defined and
q seismic loads for structure-mounted equipmentfor equipment mounted in a structure above grade the governing equation for seismic force isfp
q show seismic loads for ground supported equipmentv csw is the governing equation for horizontal seismic base shear of ground supported equipment
q calculation of seismic response loadsthe seismic design requirements and the specification of criteria variables for the calculation of seismic
q what is gust response factorfor flexible structures such as a tall vertical process vessel a gust response factor gf is another essential variable
q determination of wind-induced forces on pressure vesselsasce does not provide the complete methodology needed to account for wind-induced forces on
q procedure for calculating the wind force on vesselsthe national building code of canada has a similar procedure for calculating the wind force on
q explain about postweld heat treatmentpressure vessels shall be postweld heat treated per applicable sections in accordance with applicable material
q welded pressure joint requirementsthe welded pressure joint requirements should be selected to be suitable to the need however the following shall