Redundant reactivity control system
US4584165A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 9, 1983 |
| Grant date | Apr 22, 1986 |
| Priority date | — |
| Expiry date | Feb 9, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E30/30
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A redundant reactivity control system, operating in conjunction with other systems in a nuclear power plant, to mitigate the potential consequences of an anticipated transient without scram event, is described. The invention interfaces to a boiling water nuclear reactor with the reactor's neutron monitoring system, standby liquid control system, control rod drive system, reactor recirculation system, reactor water clean-up feed water control system, and control room and local panels. Two divisionally separated control panels include associated detection and actuation logic and the necessary interface logic to other systems to perform the specific functions in response to an anticipated transient without scram event. Each separate division includes two identical channels. Actuation of any associated reactor system by the invention requires the agreement of the two channels within a division. A one channel indication actuates appropriate annunciators and alarm equipment to notify plant personnel of a possible system fault. Each divisional panel receives independent analog signals from high dome pressure transmitters, reactor low water level transmitters, and average power range monit…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.