Primary coolant pump measurement for ICC trend analysis

Conference · Sun Jan 01 04:00:00 EST 1984

OSTI ID:5999300

Arave, A E; Adams, J P

Reactor coolant pump motor power and temperature measurements are used by Babcock and Wilcock (B and W) plant owners to calculate void fraction for trending ICC conditions while the pumps are running. This new measurement technology satisfies NUREG 0737, Item II.F.2, ''...licensees shall provide...additional instrumentation...to supplement existing instrumentation in order to provide a unambiguous, easy-to-interpret indication of inadequate core cooling. System accuracy, capability, and limitations are compared to measurement requirements using small break test data and full scale plant analytical studies. Small break experimental data shows that ICC void fraction calculations are conservative compared to gamma densitometer void fraction measurements in the pipe just upstream of the pumps and liquid level conductivity probes in the reactor vessel. Analytical studies verify that a measure of void fraction at the pumps is conservative relative to the desired coolant inventory trend conditions in the reactor vessel.

• Research Organization: EG and G Idaho, Inc., Idaho Falls (USA)
• DOE Contract Number: AC07-76ID01570
• OSTI ID: 5999300
• Report Number(s): EGG-M-16284; CONF-841122-2; ON: DE85004893
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210200* -- Power Reactors
Nonbreeding
Light-Water Moderated
Nonboiling Water Cooled
CONTAINERS
COOLANT LOOPS
COOLING SYSTEMS
ENERGY SYSTEMS
GRAPHS
MATHEMATICAL MODELS
MONITORING
PIPES
PUMPS
PWR TYPE REACTORS
REACTOR COMPONENTS
REACTOR CORES
REACTOR VESSELS
REACTORS
RISK ASSESSMENT
TEMPERATURE MEASUREMENT
TEMPERATURE MONITORING
VOID FRACTION
WATER COOLED REACTORS
WATER MODERATED REACTORS