AWS Certified Welding Inspector — FundamentalsSafetyMedium
A welding inspector is observing a maintenance operation where a welder needs to replace a heating element in a large industrial oven. To prevent accidental energization, the inspector verifies that the electrical breaker is locked out and tagged out. What is the primary purpose of the 'tag out' component of Lockout/Tagout (LOTO)?
- ATo provide a visual warning that the equipment is out of service and being worked on.
- BTo physically prevent the breaker from being re-energized.
- CTo automatically shut down power if the lockout device is removed.
- DTo measure the remaining electrical charge in the system.
Show answer & explanationAnswer & explanation
Correct answer: A. To provide a visual warning that the equipment is out of service and being worked on.
The tag-out component of LOTO serves as a visual warning, communicating to others that the equipment is de-energized and should not be re-energized due to ongoing maintenance or repair.
Why the other options are wrong
- B. This is the function of the 'lock out' device, not the tag.
- C. This describes an automatic safety system, not the purpose of a tag.
- D. Measuring electrical charge is part of verifying zero energy, not the function of the tag.
Tagout Purpose
The tagout component of Lockout/Tagout (LOTO) provides a warning to others that equipment is de-energized and must not be operated, indicating the reason and responsible party.
- Visual warning.
- Communicates 'do not operate'.
- Identifies who applied the LOTO.
- Supplements the physical lockout device.
Memory trick: Lock Stops, Tag Tells!