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Title: Fuel Motion Monitoring System at TREAT – FY2017 Instrumentation Summary

Abstract

This document is a report summarizing FY2017 efforts related to the Transient Reactor Test Facility (TREAT) Fuel Motion Monitoring System, "hodoscope," refurbishment campaign. TREAT is an air-cooled, graphite-moderated, heterogeneous test facility designed to evaluate reactor fuels and structural materials under conditions that simulate various types of transient overpower and under-cooling situations in a nuclear reactor. Fuel meltdowns, metal-water reactions, thermal interaction between overheated fuel and coolant, and the transient behavior of ceramic fuel for high-temperature systems can be studied. A key instrument that monitors fuel motion as these events take place is the fast neutron hodoscope. The hodoscope is designed to allow for pre-, during-, and post- transient imaging of fuel within a test loop in the center of the reactor core. The preferred technique for imaging is detection of fast neutrons produced by fission in the test fuel, travelling unmoderated through an empty row of core fuel assemblies and then through a multi-slot collimator to a 360-detector array. Due to the age of the instrument, a refurbishment of the hodoscope’s fast neutron detection capability is necessary to support real-time, fuel-position experimental data collection. One particular challenge in this regard is related to the refurbishment of the fast-neutron-sensing detector elementsmore » in the detector array. This report summarizes major activities and accomplishments related to the FMMS refurbishment in FY2017. Of particular note was work related to identifying options for new proton recoil scintillator wafer and initial examination of the TREAT proton recoil proportional counter detectors.« less

Authors:
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1];  [1]; ORCiD logo [1]; ORCiD logo [1]
  1. Idaho National Lab. (INL), Idaho Falls, ID (United States)
Publication Date:
Research Org.:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Org.:
USDOE Office of Nuclear Energy (NE)
OSTI Identifier:
1468582
Report Number(s):
INL/EXT-17-43434-Rev000
DOE Contract Number:  
AC07-05ID14517
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; TREAT; Hodoscope; Instrumentation

Citation Formats

Chichester, David L., Watson, Scott M., Johnson, James T., Hix, Jay D., Thompson, Scott J., and Schulthess, Jason L. Fuel Motion Monitoring System at TREAT – FY2017 Instrumentation Summary. United States: N. p., 2017. Web. doi:10.2172/1468582.
Chichester, David L., Watson, Scott M., Johnson, James T., Hix, Jay D., Thompson, Scott J., & Schulthess, Jason L. Fuel Motion Monitoring System at TREAT – FY2017 Instrumentation Summary. United States. doi:10.2172/1468582.
Chichester, David L., Watson, Scott M., Johnson, James T., Hix, Jay D., Thompson, Scott J., and Schulthess, Jason L. Fri . "Fuel Motion Monitoring System at TREAT – FY2017 Instrumentation Summary". United States. doi:10.2172/1468582. https://www.osti.gov/servlets/purl/1468582.
@article{osti_1468582,
title = {Fuel Motion Monitoring System at TREAT – FY2017 Instrumentation Summary},
author = {Chichester, David L. and Watson, Scott M. and Johnson, James T. and Hix, Jay D. and Thompson, Scott J. and Schulthess, Jason L.},
abstractNote = {This document is a report summarizing FY2017 efforts related to the Transient Reactor Test Facility (TREAT) Fuel Motion Monitoring System, "hodoscope," refurbishment campaign. TREAT is an air-cooled, graphite-moderated, heterogeneous test facility designed to evaluate reactor fuels and structural materials under conditions that simulate various types of transient overpower and under-cooling situations in a nuclear reactor. Fuel meltdowns, metal-water reactions, thermal interaction between overheated fuel and coolant, and the transient behavior of ceramic fuel for high-temperature systems can be studied. A key instrument that monitors fuel motion as these events take place is the fast neutron hodoscope. The hodoscope is designed to allow for pre-, during-, and post- transient imaging of fuel within a test loop in the center of the reactor core. The preferred technique for imaging is detection of fast neutrons produced by fission in the test fuel, travelling unmoderated through an empty row of core fuel assemblies and then through a multi-slot collimator to a 360-detector array. Due to the age of the instrument, a refurbishment of the hodoscope’s fast neutron detection capability is necessary to support real-time, fuel-position experimental data collection. One particular challenge in this regard is related to the refurbishment of the fast-neutron-sensing detector elements in the detector array. This report summarizes major activities and accomplishments related to the FMMS refurbishment in FY2017. Of particular note was work related to identifying options for new proton recoil scintillator wafer and initial examination of the TREAT proton recoil proportional counter detectors.},
doi = {10.2172/1468582},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2017},
month = {9}
}

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