Search results for query: *

Also only in DNV-OS-F-101 there is a correction factor named as fabrication factor which for U.O.E is about 0.85 but not in any other standards

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 I found something reliable in total specification for this type of repair: "For 3 ½ Ni materials, as well as for austeno-ferritic duplex stainless steels, a second repair of the same area on a given weld shall not be permitted: should a defect be repaired on a previously repaired weld area...

Dear DekDee thanks for your post; Can you please write what CYA stands for? or make a reference to what you declared above. Thanks

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...

Hi Dear members 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...

Dear Dekdee Did you mean 12.7 instead 14 mm ? Regards

Dear Dekdee you say 5.5 mm to 22 mm for non-impact tested applications ?! but you should declare your opinion based on reality and as stated above for thickness greater than 12.7mm impact test is required. Therefore whats your opinion now ? Thanks for following and consideration

Dear Dekdee if you take a look to table 323.2.2A then you will see that for thickness greater than 12.7 mm Design temperature without impact testing will be bigger than -29[0c] and as our design temperature is -29[0c] then Impact testing is required per Table 323.2.2 cell B-3. therefore testing...

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...

correction: Y2t to t + Y. in shall be replaced by T/2 to T+6.4 mm s/8 shall be replaced by 5/8 inch

Dear metenger Iam speeking about range of Qualification for Welding Procedure specification. Our welding Process is Short circuit GMAW and impact test is required. As you know and stated in QW-403.10 in Qualifying a PWPS for short circuit GMAW, the qualified thickness of base metal is up to 1.1...

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...

Thanks great guys I always says to managers do not ask me what will happen if we neglect a clause of a standard, because I don't know what was discussed in relevant committees and which aspects were considered, but here I should be directed to a conclusion which was made by Pennpiper. All you...

hi everybody 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...

Dear friends 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...

Hi 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...