ML20237J978
| ML20237J978 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 08/24/1987 |
| From: | Myers T TOLEDO EDISON CO. |
| To: | |
| References | |
| NUDOCS 8709040148 | |
| Download: ML20237J978 (6) | |
Text
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d DAVIS-BESSE NUCLEAR POWER STATION SALP 6 Weekly Report p For Weekly Period Ending August 24, 1987 This Executive Summary is pnvided to help in maintaining up-to-date cognizance of those indicators of regulatory interest and events being tracked by Toledo Edison for trending of performance during the current i
SALP period. These indicators and events were developed using some of the
'I NRC recommended performance indicators. The previous-SALP (SALP 5)-
covered the period November 1, 1986 through July 31, 1987 and the current period began on August 1, 1987.
The Executive Summary provides a brief description of the event (s)/ action (s) which occurred during the week and a cumulative total for each regulatory performance indicator category on a weekly basis. Additionally, commitment status data for NRC open items related to Licensee Event Reports and Inspection Reports is included. A cumulative listing of individual events / actions with the most recent being listed first will be provided monthly under a separate report.
i Should you have any questions regarding the enclosure, please contact George Honma, Compliance Supervisor, Nuclear Licensing Division, at (419) 249-2309.
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Nuclear Licensing Director cc:
P. Smart D. Shelton A. Davis A. DeAgazio P. Byron J. Williams, Jr.
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8709040148 870824 PDR ADOCK 05000346 G
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EXECUTIVE
SUMMARY
Events / Actions During Period of 08/18/87 to 08/24/87 The Unit operated at approximately 100 percent power until Friday, August 21, j
1987 at 10:48 p..,
when an electrical disturbance (lightning strike) on the grid resulted in a turbine generator trip and subsequent reactor trip. Reactor Protection System initiaticn was from the Anticipatory Reactor Trip System (ARTS). The turbine tripped on high vibration caused by an out-of-phase condition.
Reactor startup commenced at approximately 2:00 a.m. on August 23, 1987.
The turbine generator was synchronized online at 11:18 a.m.
On Monday, August' 24, 1987, the Unit was back to 100 percent power at approximately 6:00 p.m.
Three Technical Specification Limiting Condition for Operation Action Statements were unintentionally entered during the week (Page 3, j
Occurrence Nos. 3, 4 and 5).
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Davis-Besse Report No. 3
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u EXECUTIVE
SUMMARY
(continued)
Indicator / Event Description Event Date Occurrence No.(s) 1.
Reactor Trips A turbine generator 08/21/87 1
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trip and subsequent reactor trip occurred at approximately 2300 hours0.0266 days <br />0.639 hours <br />0.0038 weeks <br />8.7515e-4 months <br /> due to an elect-rical disturbance on the grid.
2.
Engineered Safety Features Actuations Reactor Protection 08/21/87 1
System initiation from the Anticipatory i
Reactor Trip System.
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3.
Safety System None Failures j
4.
LCO Action Statement
- a. Meteorological 08/22/87 5
tower instruments failed during lightning storm.
Meteorological instruments were returned to service approximately two hours later.
- b. Liquid effluent 08/21/87 4
total flow computer point was declared inoperable due to service water to collection box computer flow point indicating no flow cond1 tion. Flow i
is being estimated every four hours dur-ing releases until computer noint can be i
repaired 3
Davis-Besse Report No. 3
1 EXECUTIVE
SUMMARY
(continued)
Indicator / Event Description Event Date Occurrence No.(s)
LCO Action Statement
- c. The diesel fire 08/20/87 3
(continued) pump was declared j
inoperable after l
review of surveil-j l
lance due to high 1
cooling water temp-erature. The cooling water regulator was repaired and the diesel
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fire pump was returned to operable status.
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5.
Forced Outages None i.
6.
10CFR50.72 Reports See Reactor Trip (1) 08/21/87 1
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and ESF Actuation l'
(1) occurrences, j
7.
Tech 9fealSpecifi-cation Violation None 8.
Security Events None 4
Davis-Besse Report No. 3
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