ML20236L927
| ML20236L927 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 06/27/1998 |
| From: | Dapas M NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Jeffery Wood CENTERIOR ENERGY |
| References | |
| NUDOCS 9807130231 | |
| Download: ML20236L927 (5) | |
Text
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m June 27,1998 Mr. John K. Wood Vice President - Nuclear Davis Besse Nuclear Power Station Centerior Service Company 5501 North S* ate Route 2 Oak Harbor, OH 43449
Dear Mr. Wood:
This letter torwards our Restart issues List for Davis-Besse Nuclear Power Station. The Restart
. Issues List, which was developed in accordance with NRC Inspection Manual Chapter (MC) 0350, " Staff Guidelines for Restart Approval," specifies the items that tbc NRC considers as necessary to be addressed prior to plant restart. The items in the Restart issues List will be reviewed prior to plant restart.
In accordance with 10 CFR 2.790 of the NRC's " Rules of Practice," a copy of this letter and its enclosure will be placed in the NRC Public Document Room.
Sincerely,
/s/ Marc L. Dapas Marc L. Dapas, Deputy Director I
Division of Reactor Projects l
Docket No.: 50-346 I
License No.: NPF-3 l
Enclosure:
Restart issues List cc w/ encl:
John P. Stetz, Senior Vice President - Nuclear J. H. Lash, Plant Manager J. L. Freets, Manager Regulatory Affairs State Liaison Officer, State of Ohio 1
Robert E. Owen, Ohio Department of Health C. A. Glazer, State of Ohio, Public Utilities Commission i
9807130231 980627 PDR ADOCK 05000346 G
PDR DOCUMENT NAME: G:\\DAVi\\lSSUES.LST To receive a copy of this documerit, indicate in the box "C" = Copy without attachment / enc.osure "E" = Copy with attachment / enclosure "N" = No copy r.
OFFICE Rlli l
Rlli M_ Rlli l
l NAME Kozak.
MDapas#8F l
DATE 06/ /98 068lJ'98 06/ /98 OFFICIAL RECORD COPY C00000
I J. Wood Distribution:
Project Mgr., NRR w/enci C. Papenello, Rlll w/enct J. Caldwell, Rllt w/ encl B. Clayton, Rill w/ encl SRI Clinton w/enct DRP w/enct TSS w/enci DRS (2) w/ encl Rlli PRR w/ encl PUBLIC IE-01 w/enci
' Docket File w/enci GREENS LEO (E-Mail)
DOCDESK (E-Mail) i l
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RESTART ISSUES LIST The Restart Issues List for Davis-Besse Nucleer Power Station specifies the items that the NRC considers as necessary to be addressed prior to plant restart. These items were derived frorn the NRC's review of inspection activities.
ISSUE DISPOSITION STATUS 1
Switchyard Breakers Open 1
345kV Breaker 34562 opened and closed many times starting at about 2040 on 6/25.
2
- 1 Emergency Diesel Open I
Generator (EDG) Manual Start from the Control Room l
The #1EDG did not start from the control room at 2044 on 6/25. The #1 EDG l
did respond to a local manual start at 2046 on l
6/25.
l 3
Control Room Emergency Open l
Ventilation System (CREVS) l At 2202 on 6/25, Service Water (SW) 2927 would not j
stay open while starting #1 CREVS, therefore #1
)
CREVS was placed in the air-cooled mode. At 2216 j
on 6/25, SW 2927 was opened and #1 CREVS was placed in the water-cooled mode.
4 Control Rod Group 7 Open j
Positinn Indication i
l Group 7 position to Integrated Control System j
stayed at 89% after the reactor trip.
5
- 2 Atmospheric Vent Valve Open (AW)(ICS 11 A)
When placed in AUTO, #2 AW went to 10-14% open j
with demand 0% Ir, AUTO the valve stayed at 10-14%
regardless of demand.
6 Pressurizer O Jench Tank Open Level Indicates loss of l
l approximately 3500 gallons.
l No sign of water in Reactor i
Coolard Dra'n Tank or Containment Sump.
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ISSUE DISPOSITION STATUS 7
Hard Grounds on both DC Open Motor Control Centers (MCC)
High resistance grounds on both DC MCCs.
8 Emergency nobfication Open System Vulnerabilities Loss of power to sirens, loss of federal phone system, loss of ring-down phones.
9 Water Intrusion into Turt>ne Open Building Cable Trays Occurred Fiiday moming through hole torn in turbine 4
building roof by tornado 10 Switchyard Hardware Open Problems The storm caused damage to a number of components.
What was damaged, hew was it repaired, what otter inspections were performed and what test;ng should be done in order to have a high I
confidence in the material condrtion of the yard?
11 Fire Detection System Open Sensitivity to Loss of Power Operability of fire detection panels after loss of off-site powe.
12 Circuit Breaker ABDC1 Open Failure to Close ABDC1 did not close while attempting to parallel:ne diesel with off-situ power.
13
- 2 EDG Electronic Gowrnor Open Failed during EDG Shutdown 120V fuses checked,4160V fuses need EDG tagged out for check l
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ISSUE DISPOSITION STATUS 14 Switchyard Operation Open With the Bayshore line out of l
service, switchyard procedure (DB-OP-06311) states that the plant will remain in Technical Specification 3.8.1.1 even with the LeMoyne and Ohio Edison lines in service.
15
- 2 EDG Output Breaker Open Reverse power trip, lockout relays.
16 Control Rod 4-6 Absolute Open Position Indication Periodic Asymmetric Alarms 17 Loss of Assessment Open Functions at the l
Meteorological Tower Apparentloss of allwind speed and direction due to f
physical damage.
18 Water intrusion into Motor Open Control Center ES Circuit Breaker AC211 experienced a ground fault trip. Water was observed intide of MCC E5.
19 Control Rod Drive Trip Open Confirm Annunciator Problem Operator reported that the annunciator came in much later than expected.
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