Thursday, September 16, 2010

Re: [MW:7041] ASME SEC IX Code Issue

According to ASME IX, QW-406.3, when the Preheat is a supplementary essential variable, an increase of more than 55 degC in the max Interpass temperature requires requalification.
I would suggest you read carefully QW 406.1 to 406.3

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[MW:6999] ASME SEC IX Code Issue

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Dear All,
Design Code: ASME B31.3     Welding Code: ASME SEC IX
I have a Low temperature carbon steel impact tested PQR with a PWHT range of 600⁰±10⁰C.Is this condition giving an exemption for me on QW406.3 to prepare a WPS with maximum interpass temperature of 200⁰C.
Maximum interpass temperature observed during specimen welding: 140⁰C
 
Regards,
 
Limesh

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