Why monitor vapors during cut-in operations?

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Multiple Choice

Why monitor vapors during cut-in operations?

Explanation:
During cut-in operations, the heat and sparks produced by cutting metal can ignite any flammable fuel vapors in the area. Monitoring vapors lets the crew know if an explosive atmosphere (above the lower explosive limit or with abnormal oxygen levels) is present, so they can pause, ventilate, or adjust techniques to reduce the ignition risk. Vapors can come from leaks anywhere around the aircraft and can spread with airflow, so detection helps ensure safety before and during the cut. Vapors aren’t used to cool metal; cooling comes from water or foam, not vapor.

During cut-in operations, the heat and sparks produced by cutting metal can ignite any flammable fuel vapors in the area. Monitoring vapors lets the crew know if an explosive atmosphere (above the lower explosive limit or with abnormal oxygen levels) is present, so they can pause, ventilate, or adjust techniques to reduce the ignition risk. Vapors can come from leaks anywhere around the aircraft and can spread with airflow, so detection helps ensure safety before and during the cut. Vapors aren’t used to cool metal; cooling comes from water or foam, not vapor.

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