| Hi, Please find below the answers as marked in red..and also find below the extraction of code para. What will be the thickness limitation when a WPS is qualified with a PWHT above the upper transformation temperature. - as per QW407.4,The thickness limit is 1.1xT (If T is 12mm...qualified thickness is 13.2mm maximum.) For example : Material 12 MM THICK SA516 GR.70 WELDED BY GTAW+SMAW AND PWHT DONE AT 900 DEG. C with and with out Impact requirement.- If your wps PWHT is above upper transformation temp.QW403.6 is not applicable.Qualified thickness for both(with and without Impact) shall be as per QW407.4(1.1xT) QW-407.4 For ferrous base metals other than P-No. 7, P-No. 8, and P-No. 45, when a procedure qualification test coupon receives a postweld heat treatment exceeding the upper transformation temperature, the maximum qualified base metal thickness, T, shall not exceed 1.1 times the thickness of the test coupon. QW-403.6 The minimum base metal thickness qualified is the thickness of the test coupon T or 5⁄8 in. (16 mm), whichever is less. However, where T is less than 1⁄4 in. (6 mm), the minimum thickness qualified is 1⁄2T. This limitation does not apply when a WPS is qualified with a PWHT above the upper transformation temperature or when Thanks & Regards, (Karthik) Karthikeyan.S QA/QC Manager Getabec Energy Co.,Ltd. 379,Moo6,Soi8,Nikhomphatana, Rayong-21180, Thailand. Phone: 0066 38 897035-8 (Off) Fax: 0066 38 897034 Hand Phone: 0066 892512282 --- On Tue, 6/7/11, ajay singh <asingh10088@gmail.com> wrote:
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