Environment, health and safety

Which procedure, before tool maintenance, shuts off energy sources such as electricity and gas and attaches locks and tags so that no one can mistakenly turn them back on during the work?

  1. AJust-in-time
  2. BLockout/tagout (LOTO)
  3. CBurn-in
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Answer: B. Lockout/tagout (LOTO)

Lockout/tagout is the procedure of shutting off energy sources before maintenance or repair and attaching the worker's own lock and a tag showing that work is in progress to the breakers and valves. Because workers hold their own keys, it prevents others from mistakenly turning power or gas back on during the work.

  • A. Just-in-time is a production concept of making what is needed when it is needed.
  • B. Correct. Locks and tags prevent mistaken re-energizing.
  • C. Burn-in is a test to weed out early failures.
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