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Pakistan Research Reactor

Pakistan Atomic Research Reactor
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Pakistan Atomic Research Reactor is located in Pakistan
Pakistan Atomic Research Reactor
Location of Pakistan Atomic Research Reactor
Operating Institution Pakistan Institute of Nuclear Science and Technology (PINSTECH)
Location Nilore, Islamabad, Pakistan
Coordinates 33°39′13″N 73°15′30″E / 33.65361°N 73.25833°E / 33.65361; 73.25833Coordinates: 33°39′13″N 73°15′30″E / 33.65361°N 73.25833°E / 33.65361; 73.25833
Type Pool-type reactor
Materials Test Reactor
Miniature neutron source reactor (MNSR)
SLOWPOKE reactor
Power 10 MW (PARR-I)
30 Kw (PARR-II)
Construction and Upkeep
Construction Cost Unknown
Construction Began 8 July 1965; 52 years ago (1965-07-08)
Time to Construct 5 months
First Criticality 21 December 1965; 51 years ago (1965-12-21)
Shutdown date N/A
Decommission date N/A
Staff Classified
Operators Classified
Refuel Frequency N/A
Technical Specifications
Max Thermal Flux 1.05E+13 n/cm^2-s
Max Fast Flux 1.70E+14 n/cm^2-s
Cooling light water
Neutron Moderator light water
Neutron Reflector heavy water, graphite, beryllium
Control Rods 8 Rods
Cladding Material Aluminium Alloy

The Pakistan Atomic Research Reactor or (PARR) are two nuclear research reactors and two other experimental neutron sources located in the PINSTECH Laboratory, Nilore, Islamabad, Pakistan.

In addition a reprocessing facility referred to as New Labs also exists for nuclear weapons research and production.

The first nuclear reactor was supplied and financially constructed by the Government of United States of America in the mid 1960s. The other reactor and reprocessing facility are built and supplied by Pakistan Atomic Energy Commission (PAEC) in the 1970s and 1980s, respectively. Supervised by the United States and International Atomic Energy Agency (IAEA), the first two reactors are subject to IAEA safeguards and its inspections.

The PARR-I Reactor was supplied by the United States government in 1965 under the Atoms for Peace program. The PINSTECH institute was designed by American architect Edward Durrell Stone, when noted Pakistani scientists, Abdus Salam and Ishrat Hussain Usmani travelled to the United States of America in the early 1960s. The first reactor was supplied by the American Machine and Foundry as its contractors, and the first reactor was built by the American nuclear engineer Peter Karter.

In the first stage, reactor building and ancillary facilities were completed with the reactor becoming critical on 21 December 1965. The second stage, consisting of various laboratories, workshop, library and auditorium, became operational in 1974. The facility was last upgraded by PAEC chairman and noted nuclear scientist, Mr. Munir Ahmad Khan in 1989.


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