Which statement about stop-and-restart requirements is true?

Which statement about stop-and-restart requirements is true?

• A. Stop-and-restart applies only to FW
• B. Stop-and-restart applies only to S
• C. Stop-and-restart applies to both FW and S
• D. None

Answer: (C)

Stopping the arc and restarting it later can create defects at the start of the new weld pass, regardless of the weld type. That’s why the stop-and-restart requirements apply to both fillet welds and groove welds. When you pause, you need to reestablish proper heat input, arc length, and travel technique, and you must tie the new bead into the end of the previous bead to avoid crater cracks, lack of fusion, or other defects. This usually means cleaning the crater, starting with a careful restart or a small tie-in bead, and then continuing with the appropriate welding sequence so the weld remains sound. Since both fillet and groove welds can suffer from same restart-related issues, the rule applies to both.

Stopping the arc and restarting it later can create defects at the start of the new weld pass, regardless of the weld type. That’s why the stop-and-restart requirements apply to both fillet welds and groove welds. When you pause, you need to reestablish proper heat input, arc length, and travel technique, and you must tie the new bead into the end of the previous bead to avoid crater cracks, lack of fusion, or other defects. This usually means cleaning the crater, starting with a careful restart or a small tie-in bead, and then continuing with the appropriate welding sequence so the weld remains sound. Since both fillet and groove welds can suffer from same restart-related issues, the rule applies to both.