Safety Protocols & Hazard Prevention Flashcards

What does the acronym 'SDS' stand for in the context of hazardous material safety?

Answer: Safety Data Sheet

SDS (Safety Data Sheet) replaced the MSDS format under OSHA's HazCom 2012/GHS alignment.

Which NFPA 70E requirement must be completed before energized electrical work is permitted?

Answer: Completing an energized electrical work permit

NFPA 70E requires an energized electrical work permit signed by authorized management before performing live electrical work.

What is the purpose of an equipment grounding conductor (EGC) in a branch circuit?

Answer: Provide a low-impedance fault path to trip overcurrent protection

The EGC provides a low-impedance return path for fault current, causing the overcurrent device to open and clear the fault.

A worker discovers a damaged insulated tool with a cracked handle on site. What is the correct action?

Answer: Tag it out of service and remove it from the work area

Damaged insulated tools must be immediately removed from service and tagged out to prevent unintentional use.

Under NEC Article 110.26, what is the minimum working space depth in front of a 480V panelboard with exposed live parts on both sides?

Answer: 4 feet

Condition 3 (live parts on both sides) at 151–600V requires a minimum working space depth of 4 feet per NEC 110.26.

What is the primary hazard associated with 'flash blindness' during an arc flash event?

Answer: Permanent corneal damage from UV radiation

Arc flash emits intense UV and visible radiation that can cause flash blindness and permanent corneal damage.

Which signal word on a product label indicates the MOST severe hazard level under GHS/HazCom?

Answer: Danger

'Danger' is the GHS signal word for severe hazards, while 'Warning' is used for less severe hazards.