IMPROVEMENTS IN OR RELATING TO CONTROL SYSTEMS FOR NUCLEAR REACTORS

Patent · Wed Mar 25 04:00:00 EST 1964

OSTI ID:4028543

Harrison, D

A control system for obtaining a trip signal for reactor shutdown in response to excess neutron flux, is designed in which the risk of spurious trip signals is reduced to a minimum. The control system includes an ionization chamber, an a-c generator for providing polarizing potentials for the chamber, an integrator for receiving the chamber output, means for feeding to the integrator current components which cancel out the normal in-phase component of the chamber output and produce a residual signal from the quadrature components, means for sampling the integrator output at electrical angle intervals, and means for causing a control element to trigger in response to the integrated in-phase component. The operation of the control system is discussed in detail, and the reasons for its good fail-safe characteristics are outlined. (D.L.C.)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-18-019293
• OSTI ID: 4028543
• Report Number(s): GB 953383
• Country of Publication: United Kingdom
• Language: English

Related Subjects

CIRCUITS
CONTROL ELEMENTS
CONTROL SYSTEMS
CURRENTS
ELECTRIC POTENTIAL
ELECTRONIC EQUIPMENT
EXCURSIONS
INTEGRATORS
IONIZATION CHAMBERS
NEUTRON FLUX
OPERATION
PLANNING
POLARIZATION
PULSE GENERATORS
REACTOR TECHNOLOGY
REACTORS
SHUTDOWN
SIGNALS
TRIGGERS