Safety and PPE Flashcards
7 cards from real NETA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Safety and PPE flashcards as text
According to NFPA 70E, what is the minimum incident energy threshold that triggers mandatory use of arc-rated PPE?
Answer: 1.2 cal/cm²
NFPA 70E defines the arc flash boundary at 1.2 cal/cm², which is the incident energy level that causes a just-curable second-degree burn and mandates arc-rated PPE.
Which lockout/tagout step must be performed FIRST when preparing to de-energize electrical equipment?
Answer: Identify all energy sources
Identifying all energy sources (electrical, stored, mechanical) is the mandatory first step in a lockout/tagout procedure before any isolation actions.
What type of PPE is required when working within the restricted approach boundary of exposed energized conductors?
Answer: Shock protection PPE appropriate to the voltage
The restricted approach boundary requires shock protection PPE (insulated gloves, insulated tools) appropriate to the system voltage.
Which ASTM standard governs the performance requirements for arc-rated face protective products (face shields and hoods)?
Answer: ASTM F2178
ASTM F2178 covers the performance requirements for eye or face protective products used in electrical arc flash environments.
A technician discovers that a ground fault has made the equipment enclosure energized at 480V. What is the correct immediate action?
Answer: De-energize the system and report before touching
An energized enclosure is an uncontrolled hazard; the technician must immediately de-energize and report before any further contact.
What is the purpose of equipotential bonding when working on high-voltage substation equipment?
Answer: To eliminate voltage differences between nearby conductive objects that could cause shock
Equipotential bonding eliminates hazardous voltage differences between conductive objects, preventing step and touch potential shocks.
Which document must a NETA technician review before performing field testing to identify site-specific safety hazards?
Answer: Job hazard analysis (JHA) or site safety plan
A job hazard analysis (JHA) or site-specific safety plan identifies unique hazards at each location and must be reviewed before work begins.