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Safe Work Practices & Procedures Flashcards

7 cards from real ESC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Safe Work Practices & Procedures flashcards as text

  1. A worker is asked to perform electrical testing in an area where the floor is wet from a recent pipe leak. What is the safest course of action?

    Answer: De-energize and LOTO the area, remove the water hazard, then resume work after the area is dry

    Wet conditions dramatically reduce body resistance and increase electrocution risk; the area must be de-energized, the water removed, and surfaces dried before safe electrical work can resume.

  2. What is 'flash fire' boundary, distinct from arc flash boundary, and when is it relevant?

    Answer: It is the distance at which ignitable gases or vapors could be ignited by an arc, relevant in classified (hazardous) locations

    In classified (hazardous) locations, an electrical arc can ignite flammable atmospheres beyond the arc flash boundary, creating a flash fire hazard that requires additional hazard assessment.

  3. An electrician must work on a 480V motor control center while it remains energized. The arc flash label shows PPE Category 2. Which PPE ensemble is required at minimum?

    Answer: Arc-rated face shield, arc-rated gloves, and AR clothing with minimum 8 cal/cm² rating

    PPE Category 2 under NFPA 70E requires arc-rated clothing and face protection with a minimum arc rating of 8 cal/cm², including an arc-rated face shield or arc flash suit hood.

  4. Which practice is required before re-energizing equipment after completing LOTO-controlled maintenance work?

    Answer: Verify all tools and personnel are clear, remove all lockout devices, then re-energize with authorization

    Before re-energization, the authorized employee must verify all workers are clear, all tools are removed, guards are reinstalled, and each person removes their own lock before power is restored.

  5. Under NFPA 70E, what distinguishes a 'qualified person' from an 'unqualified person' for electrical work purposes?

    Answer: Having training and demonstrated skills to work safely on energized equipment of the voltage involved

    NFPA 70E defines a qualified person as one who has demonstrated skills and knowledge related to electrical equipment construction and operation, and has received safety training to work on the specific voltage levels involved.

  6. A portable power tool's ground prong has been broken off. What action must be taken?

    Answer: Remove the tool from service immediately and tag it 'Do Not Use' until repaired

    A missing ground prong eliminates the equipment grounding path, creating an electrocution hazard; the tool must be immediately removed from service and not used until properly repaired.

  7. What information must be recorded on a lockout/tagout tag at minimum per OSHA 1910.147?

    Answer: The employee's name and a warning against operating the equipment

    OSHA 1910.147 requires lockout/tagout tags to identify the employee who applied the device and warn other workers not to energize the equipment.