Title :
Neutron Sensitive Criticality Detection System
Author :
Friend, P.C. ; Ratcliffe, C.A.
Author_Institution :
Battelle Memorial Institute Pacific Northwest Laboratories Richland, Washington 99352
Abstract :
An improved alarm system to detect and warn against uncontrolled nuclear criticality events has been developed for the Hanford site. The system is neutron sensitive with an alarm threshold of 8 millirad/hour of "steady" neutron irradiation or 4 microrad of pulsed radiation. Redundancy techniques and self-check features have been incorporated whenever possible to enhance operational reliability.
Keywords :
Alarm systems; Buildings; Circuit noise; Detectors; Event detection; Neutrons; Pulse amplifiers; Pulse circuits; Relays; Thyristors;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.1971.4325895
