Zero Voltage Verification; It is a Three Step Process
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Type:  Lessons Learned

Publisher:  Argonne National Laboratory, Argonne, IL

Date: 

Topics:  Electrical, Operations

A lead machinist was performing a complex Lock & Tag procedure involving pneumatic and electrical de-energizing processes while under a management work observation. While conducting the electrical lockout, the previously energized conductors were verified in the zero energy condition, but the digital multimeter was observed to have been checked only once, a violation of the Hazardous Energy and Lockout/Tagout (LOTO) procedure.

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