Laserfiche WebLink
ASME B31.3-2016 <br /> Fig. 304.5.3 Blanks <br /> d9 <br /> t <br /> oil <br /> d9 dg <br /> To calculate t, the rules of Section VIII, Division 1, P = design gage pressure <br /> UG-34 may be used with the following changes in S = same as defined in para. 304.1.1 <br /> nomenclature: W = same as defined in para. 304.1.1 <br /> c = sum of allowances defined in para. 304.1.1 <br /> P = internal or external design gage pressure 304.6 Reducers <br /> Sf = product SEW [of the stress value, S, and the 304.6.1 Concentric Reducers <br /> appropriate quality factor, E,from Table A-IA <br /> or A-1B and weld joint strength reduction factor (a) Concentric reducers not in accordance with <br /> para. 303 or 304.6.1(b) shall be qualified as required by <br /> per para. 302.3.5(e)] for flange material. See <br /> ara. 304.7.2. <br /> para. 302.3.2(e). p <br /> t = pressure design thickness,as calculated for the (b) Concentric reducers made in a conical or reversed <br /> curve section, or a combination of such sections, may <br /> given styles of blind flange, using the appro- <br /> be designed in accordance with the rules for conical and <br /> priate equations for bolted flat cover plates in <br /> UG-34 toriconical closures stated in para. 304.4.1. <br /> 304.5.3 Blanks 304.6.2 Eccentric Reducers. Eccentric reducers not <br /> (a) Blanks not in accordance with para. 303 or in accordance with para. 303 shall be qualified as <br /> 304.5.3(b)shall be qualified as required by para.304.7.2. required by para. 304.7.2. <br /> (b) The minimum required thickness of a permanent 304.7 Pressure Design of Other Components <br /> blank (representative configurations shown in <br /> Fig. 304.5.3) shall be calculated in accordance with 304.7.1 Listed Components. Other pressure- <br /> eq. (15) containing components manufactured in accordance <br /> with standards in Table 326.1 may be utilized in accor- <br /> t — d 3P +c (15) dance with para. 303. <br /> m 8 16SEW <br /> 304.7.2 Unlisted Components. Pressure design of (16) <br /> where unlisted components to which the rules elsewhere in <br /> c = sum of allowances defined in para. 304.1.1 para. 304 do not apply shall be based on the pressure <br /> dg = inside diameter of gasket for raised or flat face design criteria of this Code. The designer shall ensure <br /> flanges, or the gasket pitch diameter for ring that the pressure design has been substantiated through <br /> joint and fully retained gasketed flanges one or more of the means stated in subparas.(a)through <br /> E = same as defined in para. 304.1.1 (d) below. Note that designs are also required to be <br />