Design and performance of the Savannah River Site Billet Active Well Coincidence Counter

Conference · Tue Jan 01 00:00:00 EST 1991

OSTI ID:5537737

Griffin, J C; Sadowski, E T

The Savannah River Site (SRS) has acquired, installed, and tested a custom-built Billet Active Well (neutron) Coincidence Counter (BAWCC). The BAWCC is used to make accountability measurements of the {sup 235}U content of U-Al coextrusion billets in the SRS fuel fabrication facility. The instrument design incorporates a unique center-source configuration, with two moderated americium-lithium (AmLi) neutron sources located in a central spindle that inserts through the center hole of the U-Al billets. This configuration, a result of earlier experimental studies at SRS, yields improved response and precision for billet assay when compared to the standard AWCC source arrangement. Initial tests of the BAWCC at SRS have yielded one-sigma uncertainties of 0.8--1.0% for a fifteen-minute assay. This paper will describe the design, testing program and performance characteristics of the BAWCC.

• Research Organization: Westinghouse Savannah River Co., Aiken, SC (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC09-89SR18035
• OSTI ID: 5537737
• Report Number(s): WSRC-MS-91-001; CONF-910774-101; ON: DE92009825
• Resource Relation: Conference: 32. Institute of Nuclear Materials Management (INMM) annual meeting, New Orleans, LA (United States), 28-31 Jul 1991
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
98 NUCLEAR DISARMAMENT, SAFEGUARDS, AND PHYSICAL PROTECTION
NEUTRON DETECTORS
DESIGN
PERFORMANCE
URANIUM 235
NUCLEAR MATERIALS MANAGEMENT
ALUMINIUM ALLOYS
COINCIDENCE METHODS
SAVANNAH RIVER PLANT
URANIUM ALLOYS
ACTINIDE ALLOYS
ACTINIDE ISO
ACTINIDE NUCLEI
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ALPHA DECAY RADIOISOTOPES
COUNTING TECHNIQUES
EVEN-ODD NUCLEI
HEAVY NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MANAGEMENT
MEASURING INSTRUMENTS
MINUTES LIVING RADIOISOTOPES
NATIONAL ORGANIZATIONS
NUCLEI
RADIATION DETECTORS
RADIOISOTOPES
SPONTANEOUS FISSION RADIOISOTOPES
URANIUM ISOTOPES
US AEC
US DOE
US ERDA
US ORGANIZATIONS
440103* - Radiation Instrumentation- Nuclear Spectroscopic Instrumentation
055001 - Nuclear Fuels- Safeguards
Inspection
& Accountability- Technical Aspects