Hi All,
In order to check the flanges of the piping system I use the Pressure Equivalent method(concerning leakage).Now I face a problem: Since the margine between the design pressure(19barg) and working pressure of flange 150#(19.6barg @50C) is low most of the flanges have been failed. If i try...
Hi All,
In Api 650, the min. required thk. for nozzles are specified. I do not know if the corrosion allowance has been applied to the mentioned thicknesses because the specified thicknesses are high. please let me know if the C.A is specified by the purchaser it must be added to the thk. which...
Dear All,
I have some tall towers(h=70m, OD=7.8m) which i applied vortex shedding to design the tower and the anchor bolts.Recently our client infromed us which the towers will be installed and erected in site for a long period(6 months) without any attached accessories such as platform. so i...
Dear All,
Please let me know what is the tolerance ( misalignment ) for two flanges joint together by stud bolts as per any standard.
Thanks in advance
Dear All,
To design one vessel our client asked us to perform wrc for designed tailing lug(normally we design according to Bednar )is it required to check with wrc also?
please let me know your opinion
Thanks in advance
Dear All,
I want to make a new WPS for past PQR. is there any limitation about thickness of basemeta?the process welding is GTAW and SMAW
Thanks in advance
Dear All,
Per ASME VIII-div2, principal stresses for cylindrical and spherical shell are specified(4-221,4-321). please let me know if I may use the formulas mentioned for spherical shell (4-321)to specify the principal stresses of ellipsoidal head.
Thanks in advance
Hi All,
Does someone know any reference regarding Pressure numbers (PN)for EN flange(En 1092) compare to ASME flange class designations?e.g what is equivalent rating in ASME flange compare to PN63?
Thanks in advance
Dear All,
I face a question about welding(our weld specialist is in vacation), in one vessel(2.25Cr1Mo)we have some coupling for thermo wells, the thermo wells material is Incoloy800, I'm not sure if the welding between 2.25Cr1Mo(SA182-F22) and Incoloy 800 is possible or some special...
Dear All,
please let me know, the mimum applicable working temperature for P-265GH and P-245GH.is it possible to use them for -20C temperature? (thk.<16mm)
Thanks in advance
Hi All,
Regarding WRC calculation i have a question: please consider a 4" nozzle on a vessel including 4"pipe attached to shell, 4x2 reducer and 2" flange. To check the WRC for this nozzle should i consider the allowable nozzle load applicable for 2" size or 4"?
Thanks in advance
Dear All,
I have a vessel (12")with body flanges I selected the flange acc. ASME B16.5(Temp-Pres.)but our client asked me to perform flange calculation acc. ASME VIII-App.2!! I specified standard flanges acc.B16.5 so i do not see any requirement to follow App.2
please let me know your opinion...
Dear All,
for our pipeline project the client insist using seamless instead of welded(12" API-5LX60 100barg=design pressure)is there any requirements or criteria for using seamless pipe regarding pressure or size?
Thanks in Advance
Dear All,
I have a question regarding pipeline with pigging system. The pipe thickness is caculated is lower than the thickness of equal Tee(half percent) For pigging the ID of pipe and Tee should be same, normally whats the solution? I guess increasing thickness of pipe(same as Tee) is not good...
Hi all,
when I tried to find the rating of A694 as forging material in ASME B16.5 I could not find this material and also some equivalent high strength material. How can i find the rating for this material,
Thanks in Advance
Hi All,
Regarding one of our pipeline project, the client ask us to supply L415 as pipe instead of API 5l-X60.I want to need which EN materials I can use for fitting(elbow, Tee..) and forging that have same properties as L415.
Thank in Advance.
Dear All,
Please let me know, if UG29/30 are applicable to design the stiffening ring that is not welded or brazed to shell.(The ring is included 2same piece that attached to gether by bolts)
Thanks in Advance
Dear All,
Our client has problem with buckling of a aluminum vertical silo(ID=3500mm, L=10000mm, thk.=4mm)first i tried by using ASME Div1,considering ring but it did not work.Actually Im not sure ASME applicable for silo or not?and if it is, so what is the solution?
Thanks in Advance
Dear All,
How can I design a reinforcing bar for a head against ext, pressure? Applying a reinforcing ring on head can not not be done by pv-elite.
Thanks in advance
Dear All,
how can i apply reinforcing ring on the head, because it is impossible with PV-Elite.
is there available any program for this application?
Thanks in Advance
