Which devices utilize a positive means to hold an emergency isolating device in the safe position?

Which devices utilize a positive means to hold an emergency isolating device in the safe position?

• A. Push-Button, Switch and Handle
• B. Combination or Key, Lockout and Tagout
• C. Padlock, Cable Tie and Seal
• D. Valve, Handle and Lock

Answer: (B)

The main idea is that a positive hold in safety isolation comes from lockout devices that physically lock the energy-isolating device in the safe position and cannot be removed without the proper key or combination, plus a tag to warn. This combination (a lockout device paired with a key or combo lock and a tag) provides both the physical barrier and the explicit warning that work is in progress, ensuring the device stays off until the authorized person removes the lock. That option clearly describes using a combination or key to secure lockout devices and applying tagout as part of the system. It aligns with how you achieve a positive hold: the device is locked in place, and only someone with the key or combination can release it, after verifying it’s safe to do so. The other options don’t specifically convey this locking-for-safety approach. They mention components or methods that may allow movement or re-energizing without a formal lockout/tagout process, or mix items (like seals or ties) that don’t provide the same positive, verifiable lock to keep the isolating device in the safe position.

The main idea is that a positive hold in safety isolation comes from lockout devices that physically lock the energy-isolating device in the safe position and cannot be removed without the proper key or combination, plus a tag to warn. This combination (a lockout device paired with a key or combo lock and a tag) provides both the physical barrier and the explicit warning that work is in progress, ensuring the device stays off until the authorized person removes the lock.

That option clearly describes using a combination or key to secure lockout devices and applying tagout as part of the system. It aligns with how you achieve a positive hold: the device is locked in place, and only someone with the key or combination can release it, after verifying it’s safe to do so.

The other options don’t specifically convey this locking-for-safety approach. They mention components or methods that may allow movement or re-energizing without a formal lockout/tagout process, or mix items (like seals or ties) that don’t provide the same positive, verifiable lock to keep the isolating device in the safe position.