Health & Safety Protocols Flashcards
7 cards from real EMP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Health & Safety Protocols flashcards as text
An energy manager is implementing a new chiller maintenance program. Which document is required to authorize a technician to work on a live 480V circuit that cannot be de-energized?
Answer: An energized electrical work permit
NFPA 70E requires a written Energized Electrical Work Permit when circuits cannot be placed in an electrically safe work condition before maintenance.
What respiratory protection is required for a worker entering a space with an oxygen concentration of 18% at sea level?
Answer: Self-contained breathing apparatus (SCBA)
An atmosphere below 19.5% oxygen is considered oxygen-deficient and immediately dangerous; SCBA is required because air-purifying respirators do not supply oxygen.
Under EPA Section 608 regulations, which refrigerant venting practice is strictly prohibited during equipment servicing?
Answer: Venting CFCs, HCFCs, or HFCs intentionally to atmosphere
EPA Section 608 prohibits knowingly venting any ozone-depleting or substitute refrigerant during maintenance, service, or disposal of refrigeration equipment.
A technician is replacing insulation on steam pipes carrying 250 psi steam. What PPE element is MOST critical to prevent the most severe injury risk?
Answer: High-temperature insulating gloves and face shield
High-pressure steam can cause severe scalding burns; high-temperature gloves and a face shield protect against the greatest injury risk during insulation work.
Which concept describes the total energy a worker absorbs during an arc flash event, measured in calories per square centimeter (cal/cm²)?
Answer: Incident energy
Incident energy is the amount of thermal energy impressed on a surface at a working distance during an arc flash, expressed in cal/cm², and determines PPE requirements.
During an energy audit of a paint spray booth, the auditor identifies the space as having a Class I, Division 1 hazardous location classification. What does this mean?
Answer: Flammable vapors are present under normal operating conditions
NEC Class I, Division 1 classifies locations where flammable vapors or gases are present under normal operating conditions and can create an ignition hazard.
What is the primary goal of a pre-task safety briefing (toolbox talk) conducted before energy system commissioning work?
Answer: Ensure all workers understand hazards and controls before starting
Pre-task briefings ensure every worker is aware of specific hazards, control measures, and emergency procedures before work begins, preventing incidents.