Electrical system failure at 165-KE, March 19, 1960
During an attempt to start the No. 6 high-lift pump at 190-KE on March 19, at 8:04 pm, the 13.8 KV bus No. 2 relayed out. All breakers connected to bus No. 2 were opened by an operation of the 13.8 KV bus differential relay. The KE Reactor was operating at the time with 190 process pump sets No. 1 through No. 5 pumping to the reactor. Process pump No. 6 was valued to the drainage sewer for pump testing following a Class A overhaul. Power to high-lift pumps Nos. 4, 5, and 6 was lost when the 13.8 KV bus No. 2 breakers opened. High-lift pumps Nos. 4 and 5 coasted down on fly-wheel energy, KE Reactor was shut down from the Panellit system and the remaining high-lift pumps Nos. 1, 2, and 3 went into severe cavitation, due to a drop in discharge pressure. The failure of the 13.8 KV system was due to a flashover from phase to phase and phase to ground at breaker bushing connectors for the No. 6 high-lift motor cables. Approximately 24.8 hours of KE Reactor's resulting outage can be charged to the incident. Damage to the electrical equipment is estimated to approximate $1000. 7 figs.
- Research Organization:
- General Electric Co., Richland, WA (USA). Hanford Atomic Products Operation
- Sponsoring Organization:
- DOE; USDOE, Washington, DC (USA)
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 6144656
- Report Number(s):
- HW-64767; ON: DE91009344
- Country of Publication:
- United States
- Language:
- English
Similar Records
13. 8-kV (ground) fault-bus-relaying study
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Related Subjects
220700* -- Nuclear Reactor Technology-- Plutonium & Isotope Production Reactors
DAMAGE
ELECTRICAL EQUIPMENT
EQUIPMENT
HANFORD PRODUCTION REACTORS
HAPO
MAINTENANCE
NATIONAL ORGANIZATIONS
OPERATION
PLUTONIUM PRODUCTION REACTORS
PRODUCTION REACTORS
REACTOR OPERATION
REACTOR SHUTDOWN
REACTORS
SCRAM
SHUTDOWN
US AEC
US DOE
US ERDA
US ORGANIZATIONS