RE: [MW:15842] requirment of Lateral expansion for P1 TO P8 PQR as ASME Sec IX

Hi! As such for SS weld up to minus 104C the Impact test is not mandatory(. Refere all ref mentioned in UG84of sec VIII )(However the test requirement depends upon Client spec .But for any cryogenic temp like  minus 196C it is mandatory to have lateral expansion value of Impact test . As you can not directly  co relate with energy value in Joules   with Lateral expansion Regards Hegde --- On Fri, 2/11/12, Vairamuthu Ramar <vairamuthu78@hotmail.com> wrote: From: Vairamuthu Ramar <vairamuthu78@hotmail.com> Subject: RE: [MW:15839] requirment of Lateral expansion for P1 TO P8 PQR as ASME Sec IX To: "materials-welding@googlegroups.com" <materials-welding@googlegroups.com> Date: Friday, 2 November, 2012, 7:30 PM Dear Ankit, The answer to your query is in red color text Now our TPI says that for GR-316L Lateral Expansion Values is must for acceptance of the PQR. Is it so?   YES. What TPI says is 100% correct. Or based on these joules values these PQR can be accepted & used for weld having requirement of impact  test at -20°c?  BEST OPTION : Please ask the testing laboratory to revise the test report by including the LE value of 316L Grade. By seeing the absorbed energy values 158J & 298J of 316L grade, any one i.e metallurgists could easily convince that surely the LE value must be greater than 1mm for your 316L material. In my experience, i can assure you that definitely the LE value of your PQR's 316L material side must be >1mm. Hence please approach your testing laboratory to revise the test report. Second Option: No doubt that based on these values this PQR can be definitely accepted  for the weld having requirement of CVN at -20°C as i said above, the LE value must be greater than 1mm in your case. You can convince TPI in that manner but usually TPI needs supporting documents for their justification not verbally but in written. So if TPI not convinced for your verbal answer, the best option is revise the report. Thanks Regards R VAIRAMUTHU Onshore Projects From: ankit.patel@orientalindia.net To: materials-welding@googlegroups.com Subject: [MW:15830] requirment of Lateral expansion for P1 TO P8 PQR as ASME Sec IX Date: Thu, 1 Nov 2012 12:28:29 +0530 Dear Experts,   We have performed a PQR for 25 thk  plate , P1(SA 516 GR-70 ) To P8(SA 240 TP-316L). These PQR has been stress relieved at 620° C & impact tested at -20°C. The testing laboratory has noted down only the joule values for the impact test, but they have not noted the Lateral Expansion Values P-8 Material. The Avg. Joules Values observed are as follows: Weld-72.67 J HAZ(GR-70)-35.33J HAZ(GR-316L)-158 J PARENT(GR-70)-51.33J PARENT(GR-316L)-298 J   Now our TPI says that for GR-316L Lateral Expansion Values is must for acceptance of the PQR. Is it so? Or based on these joules values these PQR can be accepted & used for weld having requirement of impact  test at -20°c     Thanks & Regards Ankit Patel Engineer Quality     -- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com For more options, visit this group's bolg at http://materials-welding.blogspot.com/ http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm   The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.     -- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com For more options, visit this group's bolg at http://materials-welding.blogspot.com/ http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm   The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.

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