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Dear Pennpiper, Run size is 32 inch and Branch is 28 inch. Design pressure 8.1kg/cm2. Actually this arrangement is mainly used to accommodate the desuperheating nozzle inside the run pipe. That's why we need this size even though at low pressure. Though I have already suggested to use the...

Hi All, I need to know that the maximum size of branch nozzle that can be drilled on a run pipe as per ASME B31.1. I found that the maximum size of hole on vessel as per ASME Sec 1 (PG-32.1.2) & ASME Sec VIII Div 1 (UG-36 & Mandatory App 1.7, 1.9 & 1.10). I am new to B31.1. Even I found for...

Hi All, As per PV Elite attachment, Allowable stress due to hydrotest will be 90% yield or as per (asme sec viii div 1) 1.3 times of ambient allowable stress. Can anyone tell the exact location of that point on div 1...

HI, Can anyone please advice me that how are the highlighted values are calculated from top table(Stresses in the vessel at the attachment junction) in attachment? Please refer the attachment. It's a pv elite...

can we weld SA-335 GR P22 and DIN 1.4122 PL.NT.? Will it be a good strength joint?

Thanks a tonne Mr. Metengr, Did you find anything in ASME code like we can interpolate the values for that ... (Hyphen)?

Hi, While calculating allowable stress value using sec II part D & code of construction is sec Viii Div 1 for SA-240 304 at 150F, it show just "-"(hyphen)only. that symbol refers to what? Can I use that material at 150F? How can I find the allowable stress value at 150F for that material...

Thanks prex, Against point 2, Fig. UG-53.5 & Fig. UG-53.6 are correspondingly drawn between the diagonal efficiency Vs Longitudinal Efficiency and Equivalent longitudinal efficiency vs angle of diagonal with longitudinal. From this two graphs, how can I transfer the diagonal ligament into...

Hi all, As per UG-27 (c)(1), E stands for joint efficiency or ligament efficiency, whichever is less to be used. My questions are, 1) While modelling the vessel in PV elite, The software doesnot consider about the ligament efficiency for nozzle holes, why??? 2) In asme sec viii div 1, UG-53...

Hi coolniks37, Deaerator of a power plant is a pressure vessel component which is come under the jurisdiction of ASME SEC VIII DIV 1. The Deaerator component is located before the firing station of power plant. And also, it is seperated from firing station by number of pipings. So, it won't be...

Hi TGS4, And My material of construction is SA 350 LF2 Allowable stress at 95C is 1) as per Table 1A of sec viii Div 1, 137.89 Mpa 2) as per Table 5A of sec viii Div 2, 151.68 Mpa doubt 1: In Pv elite calculation, Induced stress intensity are calculated for nozzle...

Hi, My code of construction is ASME SEC VIII Div 1 and I need to do the local stress analysis for the nozzle connected to vessel as per WRC 107.

Hi All, As per WRC 107, I calculated the Induced combined stress intensity in nozzle shell junction. Now, I need the Allowable stress intensity for comparison. But in PV Elite calculation, the induced combined stress intensity is compared with allowable stress for Div 2 as per table 5A in...

Is there anybody to answer the above question??? VIJAYAN S A

Thanks Prex, In above formulae, the first one needs the value of ρ(highlighted in red color), ie) ρ = tan ρ[0.5+(∏-ß)cotß]. I am confused with the similar notation like ρ, where can I get the value of ρ(highlighted in red color). If you say, use the second formulae, then it wont matching...

Hi, In ASME SEC VIII DIV 2, Design Rules for Supports and Attachments, There are two formulas for calculating angle ρ, ie) ρ = tan ρ[0.5+(∏-ß)cotß]. ρ = -158.58+7.8668θ-8.8037(10)-2θ2+4.3011(10)-4θ3-8.0644(10)-7θ4 Can anyone pls. suggest me which one can I use to calculate ρ for Stress...