Manpreet, Sec IX when referred to for procedure qualification by proving weld inegrity with applicale quality tests is meant for any welding done with the parameters as collected from the PQR. (pWPS -> PQR -> WPS). What ranges you see there (dia, thkns, P, G, F etc) are meant for the welder. So, in your case, to enable the welder to weld 0.25" to 0.5" you have to select a test coupon of 0.25" thick and test him to the parameters of the WPS. In short, for the present, your WPS is qualified but not the welder. Shashank Vagal
--- On Wed, 26/5/10, manpreet <manpreetsin88@rediffmail.com> wrote:
From: manpreet <manpreetsin88@rediffmail.com>
Subject: [MW:5253] Thickness for impact testing
To: materials-welding@googlegroups.com
Date: Wednesday, 26 May, 2010, 12:01 PM
Dear All My case is Material- Low carbon steel Applicable code: ASME B 31.3 According to ASME IX QW-403.6, the minimum base metal thickness qulified is the thickness of test coupon T or 0.625" (5/8"), whichever is less. That is 0.5". Therefore, the thickness range 0.25"-0.5" is not qualified. But the vendor pointed out the the qualified thickness range can based on fabrication code B31.3 Table 323.3.1 which indicates that qualifed thickness range is T/2 to T+0.25". In this case, what is the minimum qulified thickness: 0.25" or 0.5"? Please advise. -- 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/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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