Hi Dear Friends
As I know there are several methods for manufacturing longitudinally welded pipe like: U.O.E,U.O.C, continuous forming and Press Brake. All of these methods cause plastic cold forming.In ASME B31.4 it is written it is forbidden to use material with increased yield strength due to...
Hi Dear Friends
It is mentioned in our welding Specification that after for Example 2 time repair of Piping, New Defect shall be removed by Cut out; this removal shall include HAZ removal. HAZ per some handbook is 2 mm and macroethced of WPQR samples shows discolored part of base metal is...
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we have constructed many storage tanks for a refinery plant but due to many problems, their usage will be about at least two years later.Now we want to run cathodic protection system which is a anode wire system considered for usage under operation. Now all tanks are empty and...
Hi Dear Friends
Due to Paragraph 328.2.3 in ASME B31.3 I have these questions:
Does Employer refers to Conractors or Sub-contractor and also are employer and owner considered two different parts ?
Thanks for your Consideration
Hi Dear Friends
I ask my Question with an Example:
Consider that your Design Code for Piping System is ASME B31.3 and Also your material is in curve B;Design temperature is -29[0C]. So it is mandatory to take impact test for thickness greater than 12.7 mm. Now you know for PQRs with test coupon...
hi every body
I have a question about following interpretation of ASME B31.3
Interpretation: 15-23
Subject: ASME B31.3-1996 Edition, Table 323.3.1, Impact Testing Requirements for Metals
Date Issued: October 30, 1996
File: B31-96-044
Question: In accordance with ASME B31.3-1996 Edition, when...
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I work an inspector of construction project of a refinery plant.Due to wrong ETA(Estimated Time Arrival) of piping components; shortage of material in stock is going to make unacceptable delay in time schedule of construction plan, therefore managers are going to increase the number...
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I work in QA/QC Department for client in a project of constructing a Refinery Plant. Our main contractor
Hydro-test Group is going to be eliminated and their members will be distributed in different work areas under
supervision of Area Manager. Area managers biggest concern is...
Hi every body
We want to use Phase array UT in lieu of RT. therefore we shall consider requirements of Code Case 181-2. Iam confused with a phrase stated in Code case 181-2, 1-a), it says:((The examination shall be conducted using automated or semi-automated techniques utilizing computer based...
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I want to design a piping system by using RTR material based on astm D2996, designing code is ASME b31.3 and my problem is to define service design factor which is used in euation no.26b in paragraph A304.1.2.b. limitation on service design factor was described in paragraph A302.3.2.c but as...
