CSLB C-36 Plumbing ContractorSafetyMedium
A plumbing contractor is preparing to use a power-driven pipe threading machine. To prevent entanglement injuries, what is the most important safety precaution to take regarding personal attire?
- ARemove all jewelry and secure loose clothing/hair.
- BWear a long-sleeved shirt to protect arms from shavings.
- CEnsure work boots have steel toes.
- DWear tight-fitting gloves to improve grip.
Show answer & explanationAnswer & explanation
Correct answer: A. Remove all jewelry and secure loose clothing/hair.
Rotating machinery like pipe threaders poses a significant entanglement hazard. Loose clothing, jewelry, and long hair can easily get caught, leading to severe injuries. Removing or securing these items is critical.
Why the other options are wrong
- B. While long sleeves protect from shavings, if they are loose, they can become an entanglement hazard, counteracting the safety benefit.
- C. Steel-toe boots protect feet from falling objects, but do not mitigate the entanglement risk associated with clothing or jewelry near rotating machinery.
- D. Wearing tight-fitting gloves can still pose an entanglement risk if caught in rotating parts, and bare hands are often safer around rotating machinery.
Rotating Machinery Entanglement
The risk of body parts, hair, clothing, or jewelry becoming caught in moving machine parts, leading to severe injury.
- Common with lathes, drills, grinders, threaders.
- Remove jewelry, secure hair, wear fitted clothing.
- Never wear gloves with rotating machinery.
Memory trick: Spinning parts mean no loose starts.