Kahuta Research Laboratories

Kahuta Research Laboratories is located at Kahuta, Punjab, Pakistan. Kahuta is the site of Pakistan's main nuclear weapons laboratory as well as an emerging center for long-range missile development. The primary Pakistani fissile-material production facility is located at Kahuta, employing gas centrifuge enrichment technology to produce Highly Enriched Uranium [HEU] .

History

Chinese assistance in the development of gas centrifuges at Kahuta was indicated by the presence of Chinese technicians at the facility in the early 1980s but it is not confirmed. The uranium enrichment facility began operating in 1984, but suffered serious start up problems. Kahuta began producing HEU in 1986, and Pakistan's fabrication of weapons may have begun soon thereafter, with the HEU hexafluoride being made into uranium metal which was machined into weapon pits. By the late 1980s Pakistan began advertising its nuclear potential by publishing technical articles on centrifuge design, including a 1987 article co-authored by A. Q. Khan on balancing sophisticated ultracentrifuge rotors.

Operations

Operating at full capacity, Kahuta is estimated to have the potential to produce enough weapon-grade uranium for as many as 3 to 6 weapons each year. But the gas centrifuge plant has been plagued by chronic delays. As of 1984 there were reportedly approximately 1,000 centrifuges operating at the facility. About 1991, Pakistan installed additional centrifuges, raising its HEU production capacity roughly threefold. By 1991 about 3000 machines were thought to be operating with a production capacity of 30-50 kg U-235/year, enough for 2-3 implosion weapons a year.

In 1988 the US and Pakistan reached an informal understanding, which according to US officials went into effect in 1993, under which Pakistan agreed to freeze production of bomb-grade HEU indefinitely, and to refrain from enriching uranium to a level above 20% U-235. Prior to the 1998 nuclear tests, the US had reportedly obtained intelligence indicating that Pakistan had stopped production of bomb-grade uranium. However, following the tests A.Q. Khan claimed that Pakistan had never stopped making bomb-grade HEU during the 1980s and 1990s, and reportedly US officials said "we don't have enough information" to conclude that Pakistan was not making weapons-grade HEU.Fact|date=February 2007 As of mid-1998 estimates of Pakistan's HEU inventory ranged between 100 and 500 kilograms. Assuming that Pakistan would need about 20 kilograms for a single weapon, Pakistan's stockpile might be estimated at between 5 and 25 weapons.

In early 1996 it was reported that the A.Q. Khan Research Laboratory received 5,000 ring magnets, which can be used in gas centrifuges, from the China National Nuclear Corporation, a subsidiary of the China National Nuclear Corporation, a state-owned corporation. The US intelligence community believed the magnets were for special suspension bearings at the top of the centrifuge rotating cylinders. The shipment was made between late 1994 and mid-1995 and was reportedly worth $70,000. Some reports suggested that the ring magnets would allow Pakistan to effectively double its capacity to enrich uranium for nuclear weapons production. Pakistan had operated the plant only intermittently, and little information is publicly available concerning annual or total production of weapon-grade uranium at Kahuta.

Ballistic Missile Development

The Kahuta facility has also been a participant in Pakistan's missile development program. Pakistan operates a ballistic missile research center at Kahuta along with its uranium enrichment operation. KRL has successfully developed and tested Intermediate Range Ballistic Missiles based on liquid fuel technology and its associated sub systems.

Other Projects

KRL has also undertaken many other defense projects of national importance to enable Pakistan to become self-reliant in various sophisticated weapon systems and to save valuable foreign exchange. These projects include:

*Surface-to-Air-Anti-Aircraft Guided Missiles - Anza Mk 1, and Anza Mk-II.
*'Baktar-Shikan' Anti-Tank Guided Missile Weapon System.
*Anti-personnel Mine Sweeping Line Charges.
*Anti-Tank Mine Clearing Line Charge-Plofadder-195 AT.
*Laser Range Finder.
*Laser Threat Sensor
*Laser Actuated Target
*Laser Aiming Device
*Add-On Reactive Armour Kit
*Anti-Tank Ammunition-Armour Piercing Fin-Stabilized Discordin Sabot (APFSDS)
*Remote Control Mine Exploder (RCME)
*Digital Goniometer
*Power Conditioners for Weapon Systems for TOW ATGM Weapon System, "Baktar Shikan" Weapon System, "ANZA" Training Missile System
*Switched Mode Power Supplies for LAADS Radar, Skyguard Radar, Air Defense Automation *System.
*Tow Missile Modules

External links

* [http://www.krl.com.pk/ Kahuta Research Laboratories]
* [http://www.globalsecurity.org/wmd/world/pakistan/kahuta.htm Global Security Report]
* [http://www.platts.com/Nuclear/highlights/2007/nucp_nf_012907.xml Pakistan developed more powerful centrifuges] , "Nucleonics Week", January 29, 2007


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