LADWP ELECTRICAL GENERATION SAFETY
EXAM WITH QUESTIONS AND VERIFIED
ANSWERS, PLUS DETAILED
RATIONALES/EXPERT VERIFIED FOR
GUARANTEED PASS 2026/LATEST
UPDATE/INSTANT DOWNLOAD PDF
1. During maintenance on a large turbine-generator, an employee
opens the generator output breaker and assumes the generator is
safe because the breaker is open. Which statement best describes the
safety condition?
A. The generator is automatically considered electrically dead once the
breaker opens.
B. Opening the breaker eliminates all mechanical and electrical energy
hazards.
C. The generator must still be evaluated for stored, induced, residual,
mechanical, and other hazardous energy before work begins.
D. The generator is safe provided the control-room operator confirms the
breaker indication.
Answer: C.
Rationale: An open breaker does not by itself establish a zero-energy
condition. Generating equipment can retain electrical charge,
mechanical energy, pressure, steam, hydraulic energy, rotational
energy, or other hazardous energy. Proper hazardous-energy control
requires identification, isolation, dissipation or restraint of hazardous
energy, and verification before employees begin work. OSHA
specifically treats hazardous-energy control as a central requirement
for generation facilities.
1
,2. A qualified employee is preparing to work near an exposed
energized bus inside a generation switchgear lineup. What should
primarily determine the employee's approach and protective
requirements?
A. The employee's years of experience alone
B. The voltage, hazard assessment, applicable approach limits, task,
equipment condition, and required protective measures
C. The physical size of the switchgear room
D. Whether another employee has performed the same task previously
Answer: B.
Rationale: Electrical safety is hazard-based rather than experience-
based. The worker must understand the maximum voltage, electrical
hazards, applicable approach requirements, protective equipment, and
work practices necessary for the assignment. Training and work
practices must correspond to the hazards actually encountered.
3. A generator is shut down for maintenance, but the rotor has not
completely stopped rotating. What is the safest interpretation?
A. The generator is electrically safe because its breaker is open.
B. The generator can be entered immediately because the turbine is no
longer producing power.
C. Rotational and mechanical energy must still be controlled before
employees enter or work on affected components.
D. Only the electrical leads need to be locked out.
Answer: C.
Rationale: Shutdown and isolation are not synonymous. Rotating
masses can retain substantial kinetic energy after electrical generation
stops. Mechanical energy can also come from turning gear, steam,
2
,hydraulic pressure, compressed air, or other systems. A complete
hazardous-energy assessment must address every applicable energy
source, not merely the electrical source.
4. During a job briefing, the supervisor discovers that a contractor's
work will cross into an area containing energized generator
terminals. What is the best action?
A. Allow the contractor to continue if the contractor has electrical
experience.
B. Tell the contractor to work quickly and stay alert.
C. Stop and reassess the job, establish appropriate boundaries and
controls, and ensure workers understand the electrical hazards before
work resumes.
D. Permit the contractor to determine the appropriate precautions
independently.
Answer: C.
Rationale: A job briefing must address hazards and the methods used
to control them. If conditions change or the original briefing does not
adequately address the actual work area, the job must be reassessed. A
worker's general experience cannot substitute for site-specific hazard
controls.
5. Which condition represents the greatest concern when an
employee is working inside energized switchgear?
A. High ambient noise
B. Arc-flash and electric-shock exposure
C. Reduced lighting only
D. Increased paperwork
Answer: B.
3
, Rationale: Energized switchgear can expose workers to lethal shock
and arc-flash hazards. Arc flashes can produce extreme heat,
pressure, molten metal, intense light, and hazardous gases, while
shock can cause severe injury or death. OSHA identifies arc flash,
electric shock, falls, and thermal burns among significant hazards in
electric power work.
6. A lock has been placed on a generator disconnect, but the
employee has not verified that the equipment is actually
deenergized. What is missing?
A. A second employee's signature only
B. Verification of isolation and absence of hazardous energy
C. A larger warning sign
D. A longer lock
Answer: B.
Rationale: Applying a lock is a control measure, but verification is
essential. Employees must ensure that the energy-isolating devices
have actually isolated the equipment and that hazardous energy has
been rendered safe before beginning work. Verification is especially
important where electrical backfeed, alternate sources, stored energy,
or complex switching arrangements exist.
7. Why can a generator present an electrical hazard even when it is
disconnected from the utility system?
A. Generators can never be disconnected from a load.
B. The generator itself can remain a source of electrical energy or can
contain stored electrical energy.
C. Generator housings always become energized.
D. Utility voltage automatically returns through the generator frame.
4
EXAM WITH QUESTIONS AND VERIFIED
ANSWERS, PLUS DETAILED
RATIONALES/EXPERT VERIFIED FOR
GUARANTEED PASS 2026/LATEST
UPDATE/INSTANT DOWNLOAD PDF
1. During maintenance on a large turbine-generator, an employee
opens the generator output breaker and assumes the generator is
safe because the breaker is open. Which statement best describes the
safety condition?
A. The generator is automatically considered electrically dead once the
breaker opens.
B. Opening the breaker eliminates all mechanical and electrical energy
hazards.
C. The generator must still be evaluated for stored, induced, residual,
mechanical, and other hazardous energy before work begins.
D. The generator is safe provided the control-room operator confirms the
breaker indication.
Answer: C.
Rationale: An open breaker does not by itself establish a zero-energy
condition. Generating equipment can retain electrical charge,
mechanical energy, pressure, steam, hydraulic energy, rotational
energy, or other hazardous energy. Proper hazardous-energy control
requires identification, isolation, dissipation or restraint of hazardous
energy, and verification before employees begin work. OSHA
specifically treats hazardous-energy control as a central requirement
for generation facilities.
1
,2. A qualified employee is preparing to work near an exposed
energized bus inside a generation switchgear lineup. What should
primarily determine the employee's approach and protective
requirements?
A. The employee's years of experience alone
B. The voltage, hazard assessment, applicable approach limits, task,
equipment condition, and required protective measures
C. The physical size of the switchgear room
D. Whether another employee has performed the same task previously
Answer: B.
Rationale: Electrical safety is hazard-based rather than experience-
based. The worker must understand the maximum voltage, electrical
hazards, applicable approach requirements, protective equipment, and
work practices necessary for the assignment. Training and work
practices must correspond to the hazards actually encountered.
3. A generator is shut down for maintenance, but the rotor has not
completely stopped rotating. What is the safest interpretation?
A. The generator is electrically safe because its breaker is open.
B. The generator can be entered immediately because the turbine is no
longer producing power.
C. Rotational and mechanical energy must still be controlled before
employees enter or work on affected components.
D. Only the electrical leads need to be locked out.
Answer: C.
Rationale: Shutdown and isolation are not synonymous. Rotating
masses can retain substantial kinetic energy after electrical generation
stops. Mechanical energy can also come from turning gear, steam,
2
,hydraulic pressure, compressed air, or other systems. A complete
hazardous-energy assessment must address every applicable energy
source, not merely the electrical source.
4. During a job briefing, the supervisor discovers that a contractor's
work will cross into an area containing energized generator
terminals. What is the best action?
A. Allow the contractor to continue if the contractor has electrical
experience.
B. Tell the contractor to work quickly and stay alert.
C. Stop and reassess the job, establish appropriate boundaries and
controls, and ensure workers understand the electrical hazards before
work resumes.
D. Permit the contractor to determine the appropriate precautions
independently.
Answer: C.
Rationale: A job briefing must address hazards and the methods used
to control them. If conditions change or the original briefing does not
adequately address the actual work area, the job must be reassessed. A
worker's general experience cannot substitute for site-specific hazard
controls.
5. Which condition represents the greatest concern when an
employee is working inside energized switchgear?
A. High ambient noise
B. Arc-flash and electric-shock exposure
C. Reduced lighting only
D. Increased paperwork
Answer: B.
3
, Rationale: Energized switchgear can expose workers to lethal shock
and arc-flash hazards. Arc flashes can produce extreme heat,
pressure, molten metal, intense light, and hazardous gases, while
shock can cause severe injury or death. OSHA identifies arc flash,
electric shock, falls, and thermal burns among significant hazards in
electric power work.
6. A lock has been placed on a generator disconnect, but the
employee has not verified that the equipment is actually
deenergized. What is missing?
A. A second employee's signature only
B. Verification of isolation and absence of hazardous energy
C. A larger warning sign
D. A longer lock
Answer: B.
Rationale: Applying a lock is a control measure, but verification is
essential. Employees must ensure that the energy-isolating devices
have actually isolated the equipment and that hazardous energy has
been rendered safe before beginning work. Verification is especially
important where electrical backfeed, alternate sources, stored energy,
or complex switching arrangements exist.
7. Why can a generator present an electrical hazard even when it is
disconnected from the utility system?
A. Generators can never be disconnected from a load.
B. The generator itself can remain a source of electrical energy or can
contain stored electrical energy.
C. Generator housings always become energized.
D. Utility voltage automatically returns through the generator frame.
4
