Welder Red Seal · Question
A welding procedure specification (WPS) states that a preheat temperature of 100°C is required for a specific weld joint, according to ASME Section IX guidelines. During welding, the welder suspects the preheat has dropped below the specified temperature. What action must the welder take, consistent with ASME Section IX requirements?
ASME Section IX emphasizes adherence to the qualified WPS, including preheat requirements. If the preheat drops below the specified minimum, the welder must sto
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Question: A welding procedure specification (WPS) states that a preheat temperature of 100°C is required for a specific weld joint, according to ASME Section IX guidelines. During welding, the welder suspects the preheat has dropped below the specified temperature. What action must the welder take, consistent with ASME Section IX requirements?
Answer options:
- Continue welding and assume the interpass temperature will maintain required heat. ✅ Immediately stop welding and re-establish the specified preheat temperature.
- Increase the welding current to compensate for the lower preheat.
- Document the observed temperature drop and inform the inspector after the weld is complete.
Correct answer: Immediately stop welding and re-establish the specified preheat temperature.
Explanation: ASME Section IX emphasizes adherence to the qualified WPS, including preheat requirements. If the preheat drops below the specified minimum, the welder must stop welding and re-establish the correct preheat temperature. Failure to do so would result in a non-compliant weld, potentially leading to cracking or other discontinuities, and would be a deviation from the qualified procedure.
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