CSS - PMS - CCE - PCS - Pakistan Affairs (P.A)
Chashma Nuclear Power Plant
Approximately how much net electricity did C-2 generate in 2025?
A. 1,990.1 GWh
B. 2,304.3 GWh
C. 2,589.3 GWh
D. 7,590.6 GWh
Correct Answer: B
PAEC reports 2,304.3 GWh net generation from C-2 in 2025.
CSS - PMS - CCE - PCS - Pakistan Affairs (P.A)
Chashma Nuclear Power Plant
Approximately how much net electricity did C-1 generate in 2025?
A. 1,990.1 GWh
B. 2,304.3 GWh
C. 2,589.3 GWh
D. 6,972.5 GWh
Correct Answer: A
PAEC reports 1,990.1 GWh net generation from C-1 in 2025.
CSS - PMS - CCE - PCS - Pakistan Affairs (P.A)
Chashma Nuclear Power Plant
Which Chashma unit produced the most net electricity in 2025?
A. C-1
B. C-2
C. C-3
D. C-4
Correct Answer: C
C-3 generated about 2,589.3 GWh net in 2025, the highest among the four Chashma units.
CSS - PMS - CCE - PCS - Pakistan Affairs (P.A)
Chashma Nuclear Power Plant
What was C-3's availability factor in 2025?
A. 77.9%
B. 82.4%
C. 86.9%
D. 96.8%
Correct Answer: D
PAEC reports C-3's availability factor as 96.8% for 2025.
CSS - PMS - CCE - PCS - Pakistan Affairs (P.A)
Chashma Nuclear Power Plant
Which Chashma unit had the highest availability factor in 2025?
A. C-1
B. C-2
C. C-3
D. C-4
Correct Answer: C
C-3 had the highest availability factor at 96.8% in 2025.
CSS - PMS - CCE - PCS - Pakistan Affairs (P.A)
Chashma Nuclear Power Plant
What was C-4's capacity factor in 2025?
A. 75.4%
B. 79.6%
C. 87.4%
D. 94.1%
Correct Answer: B
PAEC reports C-4's 2025 capacity factor as 79.6%.
CSS - PMS - CCE - PCS - Pakistan Affairs (P.A)
Chashma Nuclear Power Plant
What was C-2's capacity factor in 2025?
A. 75.4%
B. 79.6%
C. 87.4%
D. 94.1%
Correct Answer: C
PAEC reports C-2's 2025 capacity factor as 87.4%.
CSS - PMS - CCE - PCS - Pakistan Affairs (P.A)
Chashma Nuclear Power Plant
What was C-1's capacity factor in 2025?
A. 75.4%
B. 82.4%
C. 87.4%
D. 96.8%
Correct Answer: A
PAEC reports C-1's 2025 capacity factor as 75.4%.
CSS - PMS - CCE - PCS - Pakistan Affairs (P.A)
Chashma Nuclear Power Plant
What was C-3's capacity factor in 2025 according to PAEC?
A. 75.4%
B. 79.6%
C. 87.4%
D. 94.1%
Correct Answer: D
PAEC reports a 94.1% capacity factor for C-3 in 2025.
CSS - PMS - CCE - PCS - Pakistan Affairs (P.A)
Chashma Nuclear Power Plant
Which Chashma unit had the highest capacity factor in PAEC's 2025 statistics?
A. C-1
B. C-2
C. C-3
D. C-4
Correct Answer: C
C-3 recorded the highest 2025 capacity factor among Chashma units at 94.1%.
CSS - PMS - CCE - PCS - Pakistan Affairs (P.A)
Chashma Nuclear Power Plant
A reactor SCRAM refers to:
A. A rapid emergency shutdown of the reactor
B. Routine refueling
C. Startup of the turbine
D. Grid synchronization
Correct Answer: A
SCRAM is a rapid shutdown achieved by rapidly inserting shutdown/control rods or equivalent safety action.
CSS - PMS - CCE - PCS - Pakistan Affairs (P.A)
Chashma Nuclear Power Plant
The main fissile isotope commonly used in low-enriched uranium fuel for PWRs is:
A. Uranium-235
B. Uranium-238 only
C. Thorium-232
D. Plutonium-244
Correct Answer: A
Low-enriched uranium fuel increases the proportion of fissile uranium-235.
CSS - PMS - CCE - PCS - Pakistan Affairs (P.A)
Chashma Nuclear Power Plant
Control rods in a nuclear reactor are used mainly to:
A. Absorb neutrons and regulate the chain reaction
B. Produce steam directly
C. Increase uranium enrichment
D. Generate electricity in the grid
Correct Answer: A
Control rods absorb neutrons, allowing operators to regulate or stop the fission chain reaction.
CSS - PMS - CCE - PCS - Pakistan Affairs (P.A)
Chashma Nuclear Power Plant
Why is water kept under high pressure in a PWR primary circuit?
A. To make it freeze
B. To prevent boiling at reactor operating temperature
C. To enrich uranium
D. To reduce turbine speed
Correct Answer: B
High pressure keeps the primary coolant from boiling despite its high temperature.
CSS - PMS - CCE - PCS - Pakistan Affairs (P.A)
Chashma Nuclear Power Plant
In a PWR, ordinary water primarily serves as:
A. Only fuel
B. Coolant and moderator
C. Control-rod material
D. Radioactive waste
Correct Answer: B
A pressurized water reactor uses light water as both coolant and neutron moderator.
CSS - PMS - CCE - PCS - Pakistan Affairs (P.A)
Chashma Nuclear Power Plant
The basic purpose of a reactor containment structure is to:
A. Increase electricity tariff
B. Confine radioactive material during abnormal conditions
C. Store coal
D. Cool transmission lines
Correct Answer: B
Containment provides a major physical barrier against release of radioactive material.
CSS - PMS - CCE - PCS - Pakistan Affairs (P.A)
Chashma Nuclear Power Plant
C-2's operating license, after revalidation, is valid up to:
A. 2027
B. 2030
C. 2031
D. 2035
Correct Answer: C
PNRA states that C-2's operating license was revalidated up to December 2031.
CSS - PMS - CCE - PCS - Pakistan Affairs (P.A)
Chashma Nuclear Power Plant
C-1's operating license was revalidated after its second Periodic Safety Review up to:
A. 2026
B. 2027
C. 2030
D. 2035
Correct Answer: C
PNRA states that C-1's operating license is valid through December 2030.
CSS - PMS - CCE - PCS - Pakistan Affairs (P.A)
Chashma Nuclear Power Plant
A Periodic Safety Review (PSR) is mainly used to:
A. Set electricity prices
B. Reassess plant safety for continued operation
C. Calculate fuel taxes
D. Select transmission lines
Correct Answer: B
Periodic Safety Reviews reassess plant safety and support continued licensing decisions.
CSS - PMS - CCE - PCS - Pakistan Affairs (P.A)
Chashma Nuclear Power Plant
The PNRA regional office responsible for regulatory oversight at Chashma is:
A. RNSD-I
B. RNSD-II
C. RNSD-III
D. RNSD-IV
Correct Answer: B
PNRA identifies Regional Nuclear Safety Directorate-II (RNSD-II) at Chashma.