Active Well Coincidence Counter measurements of enriched uranium fuel assemblies in scanning and stationary modes

Technical Report · Sun Dec 01 04:00:00 EST 1991

OSTI ID:5925987

Krick, M S; Cowder, L R ^[1]; Maltsev, V; Chernikov, A; Mokeenko, P; D'yadkov, K; Ivanov, V ^[2]; Lagattu, A; Lopatin, Y; Czock, K; Rundquist, D; Pedraza, L ^[3]

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1. Los Alamos National Lab., NM (United States)
2. Kurchatov (I.V.) Nuclear Power Plant, Sverdlovsk (USSR)
3. International Atomic Energy Agency, Vienna (Austria)

The Active Well Coincidence Counter (AWCC) was evaluated at the Beloyarskaya Nuclear Power Plant for the verification of BN600 enriched-uranium fuel assemblies. A custom AWCC insert, new coincidence electronics, and custom software were used. Measurements were performed in stationary and scanning modes to verify the amount of {sup 235}U/cm and the total {sup 235}U. A calibration curve for this type of fuel was established. A stationary measurement determines the amount of {sup 235}U/cm to 2.6% (1 {sigma}) in 1000 s; a single scan at 0.23 cm/s determines the length of the enriched region to 1.4% (1 {sigma}) and determines the total {sup 235}U to 4.2% (1 {sigma}).

• Research Organization: Los Alamos National Lab., NM (United States)
• Sponsoring Organization: DOE; PTAIAEA; DOD; USDOE, Washington, DC (United States); US Program for Technical Assistance (United States); Department of Defense, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 5925987
• Report Number(s): LA-12224-MS; ISPO--334; ON: DE92006833
• Country of Publication: United States
• Language: English

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