Scram reduction as a means of availability improvement

Conference · Tue Jan 01 04:00:00 UTC 1985 · Trans. Am. Nucl. Soc.; (United States)

OSTI ID:5119603

Dodson, W B; O'Mara, R L

The objective of this study was to examine reactor trips for design or procedural root cause mechanisms, which, if corrected, could lead to significant improvements in nuclear power plant outage rates. The data used in this study were extracted from newly required scram reports contained in 1984 licensee event reports (LERs) and operating plant experience (OPEC) data. Previous work from Stone and Webster and the Institute of Nuclear Power Operations had identified the feedwater, auxiliary feedwater, and condensate systems as prime contributors to reactor and turbine trip events. Hence, the study focused on trip mechanisms originating in the feedwater, auxiliary feedwater, and condensate systems (OPEC code 07) but included system interactions with other equipment and systems (e.g., main steam-feed mismatch) as appropriate.

• Research Organization: Stone and Webster, Boston, MA
• OSTI ID: 5119603
• Report Number(s): CONF-850894-
• Conference Information: Journal Name: Trans. Am. Nucl. Soc.; (United States) Journal Volume: 49 Suppl. 2
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210100* -- Power Reactors
Nonbreeding
Light-Water Moderated
Boiling Water Cooled
210200 -- Power Reactors
Nonbreeding
Light-Water Moderated
Nonboiling Water Cooled
AVAILABILITY
BWR TYPE REACTORS
CONTROL SYSTEMS
ENGINEERED SAFETY SYSTEMS
FAILURES
FEEDWATER
HYDROGEN COMPOUNDS
OPERATION
OUTAGES
OXYGEN COMPOUNDS
PWR TYPE REACTORS
REACTOR CONTROL SYSTEMS
REACTOR OPERATION
REACTOR SHUTDOWN
REACTOR START-UP
REACTORS
RELIABILITY
SCRAM
SHUTDOWNS
START-UP
TRANSIENTS
WATER
WATER COOLED REACTORS
WATER MODERATED REACTORS