Thanks you very much for your advice but I still confuse because in QW 407.2 state that "A change in temperature and time range" and this WPS change only in time range but temperature still the same so this clause shouldn't be essential variable otherwise why the code shouldn't state"A change in temperature or time range" instead of "A change in temperature and time range" please advice.
BRG
Solomon
2012/1/25 vijayan <vijayan.m@madinagulf.com>
Hi
Because the wps is not written as per the QW.407.2. it means the WPS can
support only up to 108 minutes (not 3.5 Hours)
BR
M.Vijayan
-----Original Message-----
From: materials-welding@googlegroups.com
[mailto:materials-welding@googlegroups.com] On Behalf Of solomon
Sent: Wednesday, January 25, 2012 4:45 AM
To: Materials & Welding
Subject: [MW:13563] Interpret IX-04-15
Dear Expert
.
According to interpretation below could you please explain why the answer is
"No". In my understanding WPS has change only time range but doesn't change
in the temperature(logic "and" mean change both time and temperature).
In SEC IX QW-407.2 state that "A change in the postweld heat treatment (see
QW-407.1) temperature and time range"
Interpretation: IX-04-15
Subject: QW-403.7, Base Metal Thickness Qualification and QW-407.2, PWHT
Temperature and Time Range Date Issued: December 22, 2004
File: BC04-1595
Question (1): Will a procedure qualification test coupon on 1.5 in.
thick P-No. I, Gr. 2 material and
postweld heat-treated at I,lOO°F for 1.5 hr with supplementary essential
variable requirements met, support a WPS with supplementary essential
variable requirements for production welding on 8 in. thick P-No. 1, Gr. 2
material that is PWHT at l,lOO°F for 3.5 hr?
Reply (1): No
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