Hi Prem,
Could you be more specific about your query:-
· Underclad Cracking Test— is it related to SAW strip cladding of S.S / Inconel on Reactor Pressure Vessels (RPV) shells. What kind of reheat cracking tests you have to do? Usually reheat cracking is very difficult to simulate.
· Regarding hydrogen cracking, there are standard tests developed and adopted by the industry. If you are familiar with Tekken Y-Grove test, it's a very popular test for hydrogen cracking. What's the test you're asked to perform in this case.
However underclad hydrogen cracking is a bit different issue. Typically it's commonly performed as autoclave testing, and ASTM –G-146, is the standard followed for this underclad hydrogen disbanding test.
Due to copyright issue, I can not post the ASTM standard. However the attached article tells clearly how this test is performed.
Thanks
Pradip Goswami,P.Eng
Senior Engineer/Specialist(Welding-Metallurgy)
Engineering & Training Services Division
ONTARIO POWER GENERATION Inc.
PO Box-2000, RR-55(South)
Nanticoke, Ontario,N0A1L0
Tel:-(519) 587-2201, Ext 3107--in Nanticoke
(416) 231-4111, Ext 5925--in Kipling,Toronto
Fax: (519) 587-6814
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of PREM SHANKARDUTT NAUTIYAL
Sent: Wednesday, January 27, 2010 1:20 PM
To: materials-welding@googlegroups.com
Subject: *****SPAM***** [MW:4160] Underclad cracking tests
Dear All
Can anyone provide some article / explanation / detailed procedure about how to prepare specimens and conduct test for the following Underclad cracking test ---
1)Weld specimen for reheat cracking.
2)weld specimen for Hydrogen induced cracking.
The job is a PV, code of construction is ASME Sec III, NB.
Regards
Prem Nautiyal
PREM S NAUTIYAL
CELL : 9820313278
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