Progress of Tripwire: Multi-Modal Distributed Sensing for Repository Verification

Conference · Mon Jul 25 00:00:00 EDT 2022

OSTI ID:3020318

Ocampo Giraldo, Luis A ^[1]; Thompson, Scott J ^[1]; Hix, Jay D ^[1]; Johnson, James T ^[1]; Chichester, David L ^[1]

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1. Idaho National Laboratory

This project is developing and demonstrating a multi-modal sensor system, TRIPWIRE, for containment verification in inaccessible radiological and nuclear waste repositories. The TRIPWIRE system will continuously monitor ionizing radiation and electromagnetic fields in the vicinity of emplaced nuclear materials buried in a repository, reporting on disturbances with a real-time alarm control station. The system will use long-length scintillating fiber bundles (SFBs) to perform area radiation monitoring; these will be coupled to kilometer-scale multimodal optical communication fibers – all light sensors and electronic components used with this system will be located above ground. Electromagnetic fields, and changes in local dielectric conditions caused by intrusion and soil movement, will be monitored using commercial grade, ported "leaky" coaxial cables (PCCs), with control electronics also located above ground. This paper documents the results of the simulations and modeling efforts that have helped identify the optimal placement of the SFBs. Additionally, the paper includes the current progress on the multi-modal SFB-PCC system, including the fabrication of long-length (>3-m) fibers and their coupling to optical fibers.

• Research Organization: Idaho National Laboratory (INL), Idaho Falls, ID (United States)
• Sponsoring Organization: USDOE Office of Nuclear Energy (NE); USDOE National Nuclear Security Administration (NNSA)
• DOE Contract Number: AC07-05ID14517
• OSTI ID: 3020318
• Report Number(s): INL/CON-22-68096
• Resource Type: Conference proceedings
• Conference Information: INMM Annual Meeting, Virtual, 07/25/2022 - 07/26/2022
• Country of Publication: United States
• Language: English

Related Subjects

98 - NUCLEAR DISARMAMENT, SAFEGUARDS, AND PHYSICAL PROTECTION
Scintillating Fiber
Tripwire