Design and operation of a digital low-power feedwater control system for PWRs: Final report
This report describes the elements of design and the operational results for the Combustion Engineering Digital Low Power Feedwater Control System at the St. Lucie I and II PWR Nuclear Generating plants owned and operated by Florida Power and Light Company. The microprocessor based feedwater system controller was designed to operate at low power levels (2 to 15% power). It was a replacement in this power range to a manual start-up procedure with a switchover to an analog system above the 15% power level. The Digital Low Power Feedwater Control System has proven to be a reliable system that has enhanced primary and secondary stability and has helped avoid four (4) potential trips at St. Lucie I and St. Lucie II in 1987 operations. The detailed descriptions of the digital controller design, testing and implementation in this report are intended to help utilities evaluate the benefits that digital technology could bring to the control of the feedwater system and other areas of control that are now done by manual or analog methods. 5 refs., 32 figs., 12 tabs.
- Research Organization:
- Electric Power Research Inst., Palo Alto, CA (USA); Combustion Engineering, Inc., Windsor, CT (USA). Nuclear Power Systems Group
- OSTI ID:
- 6533085
- Report Number(s):
- EPRI-NP-6149; ON: TI89005740
- Country of Publication:
- United States
- Language:
- English
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COMPUTERIZED CONTROL SYSTEMS
COMPUTERIZED SIMULATION
COMPUTERS
CONTROL SYSTEMS
COOLING SYSTEMS
DESIGN
DIAGRAMS
DIGITAL SYSTEMS
ELECTRONIC CIRCUITS
ENERGY SYSTEMS
ENERGY TRANSFER
ENRICHED URANIUM REACTORS
FEEDWATER
FLOWSHEETS
FLUID MECHANICS
HEAT TRANSFER
HYDRAULICS
HYDROGEN COMPOUNDS
LUCIE-1 REACTOR
LUCIE-2 REACTOR
MECHANICS
MICROELECTRONIC CIRCUITS
MICROPROCESSORS
OXYGEN COMPOUNDS
POWER REACTORS
PWR TYPE REACTORS
REACTOR COMPONENTS
REACTOR CONTROL SYSTEMS
REACTOR COOLING SYSTEMS
REACTOR SAFETY
REACTORS
SAFETY
SIMULATION
TESTING
VALIDATION
WATER
WATER COOLED REACTORS
WATER MODERATED REACTORS