Delayed-Neutron Monitors for the Detection of Sheath Failures in Reactor Fuel Rods

C. H. M<sc>ILLAR</sc>; B. W. S<sc>ARGENT</sc>; <sup>1</sup><sc></sc> J. C. H<sc>ORSMAN</sc>

doi:dx.doi.org/10.13182/NSE57-A25401

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Home / Publications / Journals / Nuclear Science and Engineering / Volume 2 / Number 3

Delayed-Neutron Monitors for the Detection of Sheath Failures in Reactor Fuel Rods

C. H. MILLAR, B. W. SARGENT,¹ J. C. HORSMAN

Nuclear Science and Engineering / Volume 2 / Number 3 / May 1957 / Pages 363-372

Technical Paper / dx.doi.org/10.13182/NSE57-A25401

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Development is described of a device to detect holes in the fuel-rod sheaths in an H₂O-cooled heterogeneous reactor by detecting delayed-neutrons from fission products in the effluent coolant. Operational comparison with other types of monitors is tabulated for 22 cases of burst rod sheaths. Modifications required to adapt the monitor to a D₂O-cooled reactor are discussed.