special nuclear material


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special nuclear material

[′spesh·əl ′nü·klē·ər mə′tir·ē·əl]
(nucleonics)
Fissionable and related material controlled directly by the Atomic Energy Commission, such as uranium enriched in the isotopes 235U and 233U, and plutonium.
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References in periodicals archive ?
Application of IAEA safeguards to any material or facilities proposed to be exported, material or facilities previously exported, and to any special nuclear material used in or produced through the use thereof (these are not full-scope safeguards, but safeguards required under Article III.
After assuming the chairmanship of the subcommittee in 2003, Hobson and his staff became concerned that Y-12's plan to build a new, above-ground storage facility for its special nuclear materials was inadequate for the heightened-threat environment of the post 9/11 world.
This creates additional stockpiles of special nuclear material which then must be transferred from military to civilian custody--widely regarded as more lax than that in the military.
The definition also includes "any equipment or device used for the processing, fabricating or alloying of special nuclear material if at any time the total amount of such material in the custody of the insured at the premises where such equipment or device is located consists of or contains more than 25 grams of plutonium or uranium 233 or any combination thereof, or more than 250 grams of uranium of 235; and any structure, basin, excavation, premises or place prepared or used for the storage or disposal of waste; and includes the site on which any of the foregoing is located, all operations conducted on such site and all premises used for such operations.
To protect special nuclear materials, classified parts, and information, access to the site and to areas within it must be rigidly controlled.
Since special nuclear material is potentially suitable for bomb-making, visibly armed federal Homeland Security personnel guarded the site during prior cleanup operations.
In fact, the IAEA still only makes public its discovery of special nuclear materials it believes are unaccounted for.
The Corps contractor unearthed U-233 at the Parks site, which is considered a special nuclear material.
As requested, this report provides information on (1) security incidents that compromised or potentially compromised classified information, (2) incidents involving the loss of or failure to properly account for special nuclear material (highly enriched uranium or plutonium) and radiological material, (3) nuclear safety concerns at the laboratory, (4) safety accidents involving LANL employees or contractor personnel, and (5) project management weaknesses that may have resulted in significant cost overruns.
national capabilities to detect, find, and characterize special nuclear material production activities by developing advanced in-place, near-field, and remote sensing technologies.
The Nuclear Regulatory Commission (NRC) is asking for public comments by Feb, 18 on a proposal to update, clarify and strengthen the requirements for material control and accounting of special nuclear material.
In terrorists' hands, weapons-grade nuclear material--known as Category I special nuclear material when in specified forms and quantities--can be used to construct an improvised nuclear device capable of producing a nuclear explosion.

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