Hi,
Re: QW 451.1 etc,
This thickness / dia range is for the test coupon used at the time of PQR. The welder who ran the PQR automatically gets qualified to this range. But same welding technique / parameters can be used for qualifying welder on any size test coupons w/o any more integrity (mech tests or other) tests - as required for field welds. Just a workmanship test such as bend or NDT is sufficient. In that sense, when a WPS passes in PQR required tests, it is good for all sizes.
Hope this is good enough?
Shashank Vagal
.
--- On Mon, 12/10/09, Muhammed Ibrahim <ibratech@gmail.com> wrote:
From: Muhammed Ibrahim <ibratech@gmail.com>
Subject: [MW:3494] Re: 3482] Re: WPS/PQR, Range Qualified
To: materials-welding@googlegroups.com
Date: Monday, 12 October, 2009, 9:45 PM
Dear Mr. Gopalasamy, There is restriction for thickness range qualified. Pls refer QW-451.1 in ASME Sec. IX. Regards, Ibrahim
2009/10/12 Gopalasamy, Ramasamy - PY1 Site <rgopalasamy@hoec.com> There is no restriction on thickness or diameter for the PQR. It is requireq for the performance (WPQT) only. Regards, R.Gopalasamy, Sr.QA/QC Consultant, Hindustan Oil Exploration Company Ltd, PY1, Onshore Gas Processing Facility, Thirukkadaiyur. Mobile : 09789090752 Hi What i interpret from the query is that the thickness of test coupon welded for PQR i.e while qualifying the WPS was 15mm. Hence as per ASME SecIX, QW-451:which states the Procedure qualification thickness limits, the range of thickness "T" of base metal qualified will be 5mm to 30mm (2T). Actually the question is not very clear and imp. details like impact requirements are missing .. All are requested to pose clear,detailed to the point queries so that they can get correct answers / solutions. Regards Prem Nautiyal Cell:9820313278 On Sun, 11 Oct 2009 14:06:21 +0530 wrote >thickness limits are defined in QW 403.6 and 403.8, diameter is not a restriction for procedure but thickness limits are.to weld 20mm thickness your PQR test coupon thickness shall be at least 10mm On Sun, Oct 11, 2009 at 10:53 AM, Shashank Vagal wrote: Hi Group Members,Please see the following and advise.Shashank Vagal Query: dear every one, i have this problem i need to know the thickness range or pipes diameter range for the wps in which standard i think its in asme sec 9 but where ??? for exmple if i have wps for thickness 15 is it cover the 20 mm waiting answer please regards My Reply: A WPS is a guideline to ensure joint integrity as proven by PQR + applicable mech tests + NDT. It is intended for all job sizes once the welding technique used proves itself in these tests. The sizes etc come in to picture by qualifying welder on test coupons of a given size as per your job requirements. ASME IX stipulates weld metal deposit and not job size. Please ref to QW 450 - 461. Now, send attachments up to 25MB with Yahoo! India Mail. Learn how PREM S NAUTIYAL CELL : 9820313278 -- Thanks & Regards Muhammed Ibrahim PK
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