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PLANT FEATURES AND DATA
General
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Owner/Operator:
Pakistan Atomic Energy Commission
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Prime
contractor and designer: Canadian General Electric Company Ltd.
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Civil
consultant: Montreal Engineering Company
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Reactor
type: CANada Deutrium Uranium (CANDU) Pressurized Heavy Water (PHWR)
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Heat
transferred to steam cycle: 432.8 MW (thermal)
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Gross
output: 137,000 kWe
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Net
station output: 125,000 kWe
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Generation/
transmission voltage: 15/132 kV
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Capital
cost (1971): Rs. 428.026 Million
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Overall
station efficiency: 27.42%
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Total
D20 inventory: 300,000 lbs (approximately)
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Total
cooling sea water requirement: 150,300 IGPM
Core
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Lattice
type: Square
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Number
of channels: 208
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Lattice
Pitch: 9.25 inches
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Cell
area: 85.56 square inches
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Core
radius: 75.27 inches
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Average
thermal neutron flux in new fuel at rated power: 5 x 1013 n/cm2
-second
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Number
of Fuelling Machines: 2
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Type
of fuelling: Bi-directional on-power
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Fuelling
operation: Automatic with the help of two digital computers
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Total
weight of Uranium in the core: 30 tons (approximately)
Calandria
(Reactor Vessel)
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Form,
material: Horizontal vessel with integral dump, stainless steel
304L) austentic
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Outside
width of shell: 16 feet 4 inches
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Overall
length: 16 ft. 3 inches
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Shell
wall metal thickness: 3/4 inches
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End
wall metal thickness: 1 inches
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No.
of calandria tubes: 208
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Tube
size: 3.985 in. (internal diameter)
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Tube's
wall thickness: 0.057 inches
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Dry
weight: 110,000 lbs (55 tons)
Fuel
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Type:
Sintred pellets of natural U02, clad in Zircaloy-4 tubing
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Enrichment:
0.7% (natural)
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Burn
up at discharge: 8650 MWd/tonne
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Bundle
length: 19.5 inches
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Bundle
diameter: 3.21 inches (nominal)
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Weight
of bundle: 36.47 lbs
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Bundles
per channel: 11
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Elements
per bundle: 19
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Number
of bundles in in the core: 2288
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Pellets
per element: 23
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Pellet
length: 0.25 inches
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Pellet
diameter: 0.561 inches
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Cladding
sheath thickness: 0.01 5 in. thick zircaloy-4
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Maximum
cladding sheath temperature: 612° F (322.2° C)
Control
System
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Reactor
Protection: By Moderator Dump
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Reactor
Regulation: Single Channel Digital Computer with complete standby
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Reactor
Reactivity Control: Moderator Level, Booster Rods, Fuelling,
Absorber Rods
Primary
Heat Transport System
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Hot
coolant quantity: 60,000 lbs
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Average
coolant flow: 15.15 million lbs/hour
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Average
coolant speed: 24.9 feet/second
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Coolant
inlet temperature: 474.3°F at 1624 psia
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Coolant
outlet: 560°F at 1554 psia
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Feed
water flow rate: 1.663 million lbs per hour at 334°F
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Throttle
steam flow: 1.646 million lbs per hour
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Throttle
steam pressure & temperature: 559 psia 478.6°F
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