Electrical Safety and LOTO Flashcards
7 cards from real CSS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Electrical Safety and LOTO flashcards as text
When must a group lockout/tagout procedure be used?
Answer: When more than one employee performs servicing or maintenance on the same equipment
Group LOTO procedures are required when more than one employee is involved in the servicing or maintenance of the same piece of equipment.
During a shift change while LOTO is in effect, what is the correct procedure?
Answer: The outgoing shift's lock may remain until the oncoming authorized employee applies their own lock before the outgoing lock is removed
OSHA requires continuity of protection during shift changes — the oncoming employee applies their lock before the outgoing employee removes theirs, ensuring no gap in protection.
What action must be taken before removing a LOTO device and restoring energy to equipment?
Answer: Ensure all employees are clear of the equipment and that all tools and materials have been removed
Before restoring energy, the authorized employee must verify all affected employees are safely positioned away from the equipment and all tools, materials, and guards are in place.
What is the danger of 'phantom energy' or residual energy in a capacitor bank after de-energization?
Answer: It can deliver a lethal electrical shock even after the main power is disconnected
Capacitors can store significant electrical charge that remains dangerous long after the main power source is isolated, requiring deliberate discharge before working nearby.
An employee discovers that a lock from a LOTO procedure has been left on equipment but the employee who placed it cannot be contacted. What is the correct action?
Answer: Follow the employer's documented procedure for removing another employee's lock, which requires management authorization and verification
OSHA 1910.147 requires employers to have a documented procedure for removing a LOTO device when the employee who applied it is unavailable, involving management authorization and safety verification.
Which of the following is an acceptable LOTO device characteristic per OSHA 1910.147?
Answer: Substantial enough to prevent removal without excessive force, and standardized in color, shape, or size
OSHA requires LOTO devices to be durable, standardized (consistent color, shape, or size), substantial enough to deter removal, and uniquely identified to the authorized employee.
What is the correct term for an employee who works in an area where LOTO is in effect but does not perform the actual servicing?
Answer: Affected employee
OSHA 1910.147 defines an 'affected employee' as one whose job requires them to operate equipment being serviced or who works in an area where LOTO is being performed.