ML20054A132
| ML20054A132 | |
| Person / Time | |
|---|---|
| Site: | 05000000, Indian Point |
| Issue date: | 03/03/1981 |
| From: | ORGANIZATION FOR ECONOMIC COOPERATION & DEVELOPMENT |
| To: | |
| Shared Package | |
| ML19240B432 | List: |
| References | |
| FOIA-81-380 NUDOCS 8204150303 | |
| Download: ML20054A132 (2) | |
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No IRS RESTRICTED 28*-#
DIFFUSION RESTREINTE Date of Receipt Date de R6ception 3rd March 1981 Name of nuclear power station Nom de la centrale Indian Point' Unit,2 U.S.A.
Date of incident Date de l' incident 31st January 1981 Type of reactor Type de rsacteur F.IR Authorized electrical power Niveau de puissance slectrique 963 MWe*
autoric4 First commercial operation Date de mise en service August 1976*
- added by OECD/IEA Secretariat.
t 8204150303 811109 PDR FOIA l
CONNORO1-380 PDR
2nd February 1981 PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE--PRO-I-81-16 Facility:
Power Authority of the State of New York Indian Point Unit 3 (DN 50-286)
Buchanan, New York Sub,ie ct :
Damaced Low Pressure Turbine At approximately 6.13 a.m. on January 31, 1981 blading from Number 31 Low Pressure Turbine (LPT) separated from the shaft during operation apparently causing tube leakage in the main condenser.
The secuence of events is as follows:' at 6.15 a.m.
a high vibration alarm occurred on No. 4 Main Turbine Shaft Bearing which is on the south end of No. 31 LPT.
Immediately following the alarm, chloride alarms on all condensers peaked, and the operator had difficulty maintaining condenser vacuun.
Load reduction was initiated and NRC was notified via the ENS at 6 50 a.m.
The condensers were isolated to identify the chloride source.
At 8.15 a.m. a mode reduction to Hot Shut i
Down was initiated.
At 8 39 a.m. a reactor trip occurred due to high steam generator (S/G) water level on No. 31 S/G.
j Reactor power was at 9% with one main boiler feed pump in l
manual control.
Separation of turbine blading from the "last stage of No. 31 LPT was verified at about 3 30 p.m. by visual inspection.
The unit is presently in cold shutdown.
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