Q: The Maximum Interpass temperature recorded on my BS EN ISO 15614-1 WPQR (S355 Carbon Steel MAG Butt Weld in Plate) is 229°C. Surely the welding Inspector has made a mistake...everyone knows it should be 250°C?
A: No mistake has been made. BS EN ISO 15614-1 para 8.4.10 states:
Interpass Temperature :The upper limit of the qualification is the highest interpass temperature reached in the welding procedure test.
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Harris Pye Engineering Ltd
Geoff Magaskil, JT Price