Concepts for inventory verification in critical facilities

Cobb, D.D.; Sapir, Jonathan; Kern, E.A.; Dietz, R.J.

doi:10.2172/6393983

Cited by 2 publications

(3 citation statements)

References 4 publications

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“…In February 1979 NBL invited the Los Alamos National Laboratory to participate In an investigation and evaluation of nondestructive assay of the 2M U content of fabricated fuel rods for high-temperature gas-cooled reactors. As a result, Los Alamos undertook an extensive set of measurements including both delayed-neutron and passive gamma-ray nondestructive About mid-1978, technical input to a conceptual study report entitled "Concepts for Inventory Verification in Critical Facility" 22 was requested. Two separate technical proposals 2 '' resulted.…”

Section: High-temperature Gas-cooled Reactor Fuels Intercomparison (Jmentioning

confidence: 99%

Nuclear safeguards research and development. Program status report, October 1980-January 1981

Henry

1981

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This report presents tho status of the Nuclear Safeguards Research and Development Program pursued by the Energy, Chemistry-Materials Science, and Operational Security/Safeguards IHvisions of the Los Alamos National Laboratory. Topics include nondestructive assay technology development and applications, international safeguards, <>srimeter safeguards and surveillance, concepts and subsystems development, and integrated safeguards systems. Also discussed are training courses, technology transfer, analytical chemistry methods for fissionable materials safeguards, the Department of Energy Computer Security Technical Center, and operational security. PART I SAFEGUARDS TECHNOLOGY I. TEST AND EVALUATION PROGRAMS AT DEPARTMENT OF ENERGY FACILITIES A. Test and Evaluation of the In-Line Plutonium Solu-precisions achieved over this wider concentration range, tion Densitometer at the Savannah River Plant (H. A. and Fig. 2 compares the densitometer assay results with Smith, T. Marks, S. S. Johnson, R. W. Slice, J. K. the corresponding chemical analyses. Figure 1 demon-Sprinkle, L. R. Cowder, C. O. Shonrock, and D. L. strates that the densitometer can achieve better than Garcia) 0.5% statistical assay precision on plutonium concentrations ranging from 30 to > 100 g Pu#. Figure 2 shows Off-line measurements with the K-edge plutonium excellent agreement between the densitometer and solution densitometer 1 have continued. Concentrations chemical assays over the design range (and the range of measured standards have been extended from the over which the calibration was established, as described design range of 25 to 40 g Pu/V to a range of 5 to 200 g in Ref. 2) and very good agreement beyond that range. P#. Figure 1 summarizes the instrument densitometry The discrepancy at 200 g/(points out the limitation of % w a D°" 1.0 0.5 INSTRUMENT DENSITOMETRY ASSAY PRECISION ond Z9mCi S7 Co 20-mln dsnsitomstry assay-40-roln dtn*ltom«try assay

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Section: High-temperature Gas-cooled Reactor Fuels Intercomparison (Jmentioning

confidence: 99%

Nuclear safeguards research and development. Program status report, October 1980-January 1981

Henry

1981

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“…A report is currently being prepared by LASL which describes pro cedures and techniques which will be applicable to the special inventory verification task. 6 The results of this study will be published in a separate report and no attempt is being made herein to evaluate the effectiveness of the material accountancy scheme. However, one possible technique and sampling plan was investigated as part of the conceptual design effort to gain insight into the time that might be required to perform a meaningful special inven tory verification.…”

Section: Special Inventory and Inspectionmentioning

confidence: 99%

“…Prelim inary concepts for a material accountancy system have been developed for critical facilities 5 and a more detailed analysis is to be published. 6 T.iis is expected to result in a plan not only for special inventory veri fication in response to a monitor alarm but also for recommendations for both continuous and/or periodic routine inventory. Preliminary results from this effort suggest that timely special inventory verification can be achieved and that routine inventory can detect protracted di"ersion.…”

Section: Introductionmentioning

confidence: 99%

International safeguards for fast critical facilities

Gunderson¹,

J.L.²

1978

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A study was conducted to investigate various approaches to providing international safeguards for high-inventory fast critical facilities. Twenty-eight options were consiue 3d, ranging from technology intensive to inspector intensive . One option, believed to be a reasonable compromise between the number of inspectors and level of technological sophis tication, was further investigated for its application to a hypothetical model reference facility.

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Concepts for inventory verification in critical facilities

Cited by 2 publications

References 4 publications

Nuclear safeguards research and development. Program status report, October 1980-January 1981

Nuclear safeguards research and development. Program status report, October 1980-January 1981

International safeguards for fast critical facilities

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