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

Conference · Mon Dec 30 23:00:00 EST 1991

OSTI ID:10134055

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, Washington, DC (United States)
• DOE Contract Number: AC09-89SR18035
• OSTI ID: 10134055
• Report Number(s): WSRC-MS--91-001; CONF-910774--101; ON: DE92009825
• Country of Publication: United States
• Language: English

Related Subjects

055001
440103
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
98 NUCLEAR DISARMAMENT, SAFEGUARDS, AND PHYSICAL PROTECTION
ALUMINIUM ALLOYS
COINCIDENCE METHODS
DESIGN
NEUTRON DETECTORS
NUCLEAR MATERIALS MANAGEMENT
NUCLEAR SPECTROSCOPIC INSTRUMENTATION
PERFORMANCE
SAVANNAH RIVER PLANT
TECHNICAL ASPECTS
URANIUM 235
URANIUM ALLOYS