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9.2.1.4 Welding variables (including supplementary essential variables when<br />
impact tests are required by 9.2.2), as defined by QW-250 of Section IX of the<br />
ASME Code, shall be used to determine the welding procedure specifications<br />
and the procedure qualification records to be instituted. In addition, when<br />
impact tests of the heat-affected zone are required, the heat-treated condition<br />
of the base material shall be a supplementary essential variable. Plates<br />
produced by the controlled-rolled process (TMCP?) are not to be considered<br />
as having received any heat treatment. If a protective coating has been<br />
applied to weld edge preparations, the coating shall be included as an<br />
essential variable of the welding procedure specification, as required by<br />
7.2.1.9.<br />
Charlie Chong/ Fion Zhang
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