Emergency Response & System Restoration Procedures Flashcards
7 cards from real SOPD practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Emergency Response & System Restoration Procedures flashcards as text
A 'hot line tag' differs from a 'clearance' in that a hot line tag:
Answer: Only cautions workers that a line is energized and in service — it does not de-energize it
A hot line tag advises workers that the equipment is energized; unlike a clearance, it does not guarantee a de-energized state and requires linemen to use live-line techniques.
What is the purpose of a 'restoration priority list' maintained in an EOP?
Answer: To pre-determine the order in which loads and elements are restored to minimize outage duration and protect critical facilities
Restoration priority lists pre-define the sequence for energizing critical loads and system elements, ensuring hospitals, water pumping stations, and backbone transmission are restored first.
During a major disturbance, an operator receives conflicting SCADA readings on a breaker status. The safest assumption is:
Answer: Treat the breaker status as unknown and use field verification or secondary indicators before acting
When telemetry is unreliable, operators must treat equipment status as unknown and verify via phone with field personnel or use secondary indicators such as current flow and voltage to determine true status.
Which NERC standard specifically addresses the requirements for Transmission Operator Emergency Operations?
Answer: EOP-001
NERC EOP-001 establishes requirements for Transmission Operators to have documented emergency operations plans covering abnormal system conditions.
A generator on black start duty fails to start. The system operator should:
Answer: Activate the alternate black start unit identified in the restoration plan
Emergency restoration plans require at least one alternate black start resource so operators can pivot immediately if the primary unit fails to start.
Over-excitation of a generator during restoration can result in:
Answer: Generator step-up transformer saturation, high currents, and potential equipment damage
Excessive field current causes the generator and transformer core to saturate, producing large harmonic currents and heating that can damage transformer insulation.
When two subsystems are being synchronized before reconnection, which parameter mismatch poses the greatest immediate mechanical danger to generators?
Answer: A large phase angle difference at the moment of breaker closure
A large phase angle difference at breaker closure creates a severe out-of-phase condition causing massive current surges and torque transients that can physically damage generator shafts and windings.