Please describe your application?
Test is more applicable for Pipelines where there is possibility that in an event of small
crack, it might run through quite a distance.
API5L Table18 & ASME B31.8 requires DWTT for linepipe after reaching a certain diameter
(If agreed, DWT testing of Pipe Body of welded pipe with D>508mm = Once per test unit of pipe)
Result values are specified in Percentage shear (ASTM E436), It assures resistance to ductility
running fracture if shear is 85% or better at the min. design temp. of the line, which a charly
bar does not, Test Coupon is comparably bigger than Charpy testing.
Regards
Manpreet Singh
From: Mohit Aggarwal
[mailto:aggarwalmohit05@gmail.com]
>Sent: Tuesday, February 14, 2012
10:17 AM
>To: materials-welding
>Cc:
christopher_rajku...@yahoo.com; george.dilintas@gr.bureauveritas.com;
manojac...@gmail.com; welding_engr_r...@charter.net; AA karandish; Abuhanip bin
Abdul; Ahmed Osman; akcme; Ali Asghari; Aly; AMIT PAHUJA; Amos Majola; Anil
Hegde; antony jenis; Arun Jacob; Arunachalam A; Ary Agung Prasetyo; asad azmi;
Brl Pp; Dindo; Dinesh Somwanshi; duc hoang; ENAYAT ZAREI; Endri Prasetyo; Fitria
Rahman; fredric; Garry Mat Eng.; Himan Nikdin; james gerald; John Henning; jose;
Kaja Mohideen; kannayeram gnanapandithan; Karthik; Kavin Murugam; ketan shah;
khemici badri; lakshman kumar; Madhusudan Rout; mahesh sanghvi; Mahmoud; meemo
prasad; Mehdi Emami; mpk mpk; MRG; Muhammed Ibrahim PK; muthu barathi; Nadgauda,
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rajkumarantoni; Ramchandra vichare; Ramin Kondori; ravi varman; S C Balawat;
sanggyu LEE; santhosh kumar; SAQIB SHIRAZI; sevak hiren; Shadab Alam Ansari;
shanmuga mari; snbagchi; Srinivas Engr; srinivasu; T. Mahendran; U WYNN-NAING;
vaibhav Joshi; venkat ramana; Vijay Katkar; vinit.deshpande; Vino Varghese; Wu
Hua; yogeshkumar Kumbhar; ZUL MAS
>Subject: Drop Weight
Test.
>
>
Respected Experts,
>
As per client Requirement We will have to conduct Drop Weight Test IN
NPCIL.. What is Drop Weight Test and how we will determine Nil ductility
transition temp..PLease reply
>
Thanks & REgards
MOhit Aggarwal.
--
>
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