ML20064F301
| ML20064F301 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 01/04/1983 |
| From: | Crouse R TOLEDO EDISON CO. |
| To: | Stolz J Office of Nuclear Reactor Regulation |
| References | |
| RTR-NUREG-0737, RTR-NUREG-737, TASK-2.K.3.17, TASK-TM 888, NUDOCS 8301060300 | |
| Download: ML20064F301 (6) | |
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Docket No. 50-346 7gL,gg License No. NPF-3 Serial No. 888 RcHAno P. CROUSE Vca Prestent Nuclear January 4, 1983 5415 259-522i Director of Nuclear Reactor Regulation Attention:
Mr. John F. Stolz Operating Reactors Branch No. 4 Division of Operating Reactors United States Nuclear Regulatory Commission Washington, D. C.
20555
Dear Mr. Stolz:
This is Toledo Edison's response to a verbal request for additional information by Al DeAgazio on Emergency Core Cooling System (ECCS) outage time at the Davis-Besse Nuclear Power Station, Unit No. 1.
The requested information is enclosed as Attachment I.
This is Toledo Edison's third submittal concerning this information, and there appears to be some question as to what exactly is required for Franklin Research to complete the review for NUREG 0737, Item II.k.3.17.
Should further questiens arise concerning this matter, I suggest a telephone conference be arranged to resolve them.
Very truly yours, f
RPC:RFP:nif encl.
cc: DB-1 NRC Resident Inspector C
O) 8301060300 830104 PDR ADOCK 05000346 P
PDR THE TOLEDO EDISON COMPANY EOISON PLAZA 300 MADISON AVENUE TOLEDO, OHIO 43652
Docket No. 50-346 License No. NPF-3 Serial No. 888 January 4, 1983 ATTACHMENT I HPI-LER NO.
TITLE DATE OF OCCURENCE 33-77-28 Removed HPI line 1-2 from service ~
7/29/77*
for test.
33-77-92.
Failure to vent HP-72 during ST.
11/1/77 33-78-82 HPI Pump 1-1. excessive vibration.
6/16/78 30-78-01 Partial HPI Actuation 4/29/78 32-79-03 Inoperability of HPI Pumps 1-1 and 1/3/79-1-2 due to minimum recire line freezing.
33-79-127 HPI Pump 1-1 failed to start.
11/12/79 33-79-154 HPI line 1-1 seismic support design 12/19/79 exceeded slenderness ratio of 200.
33-80-64 HPI Pump 1-1 motor inboard and out-6/23/80 board bearing thermocouple well broken.
HPI total hours of inoperability reported is 322 hrs.
Total hours in which the Station mode did not require equipment to be operable is 312 hrs.
Planned entry into action statement to permit testing is 5 hrs.
NP 32-79-03 should be removed from-the list of events, as a later safety evaluation that the HPI system were operable even with the frozen minimum recire, lines.
NP 33-80-64 under present guidelines, an event that occurs in a mode in which the equipment is not required, would not be reportable.
NP 30-78-01 did not report a f ailure but rather an activation.
- During Plant Startup and Testing.
d' Docket No. 50-346 License No. NPF-3 Serial No. 888 January 4,1983 Attachment I Page 2 of 5 EDH and LPI LER NO.
TITLE DATE OF OCCURRENCE 32-77-2 Loss of DH Pump (Insulation-Installa-5/27/77*
tion).
32-77-3 Loss of DH Pump (Maint. Instruct. -
5/28/77*
error).
32-77-5 Loss of DH Flow by personnel error 6/12/77*
during performance of SFAS monthly.
32-77-6 Loss of forced RC Flow due to error 7/11/77*
in DH Valve lineup.
32-77-8 Failure of DH stop check valve DH-77.
7/17/77*
32-77-9 Loss of DH flow caused by unauthorized 7/22/77*
work on pressure transmitter leaks.
33-77-26 DH 2733, DH pump 1-1 suction valve 7/24/77*
closed.
33-77-50 DH valve pit and DH-12 inoperability.
8/4/77*
33-77-57 DH-1A left closed after ST.
8/18/77*
33-77-66 DH Pump 1-2 removed from service.
8/24/77*
33-77-74 DH Flow 2800 CPM for less than 5 9/21/77 seconds (DH-12).
33-77-77 DH Valve pit open per FCR 77-034 10/10/77 (DH-12).
33-77-19 Hyd Snubber fluid reservoirs empty.
7/8/77*
33-78-13 DH Pump 1-1 failed to start.
1/16/78 33-78-22 Cooler valves stops incorrectly set.
2/10/78 33-78-72 No DH flow for 1 min.,39 sec.
5/28/78 (Switches AD 110 open).
- During Plant Startup and Testing.
a Docket No. 50-346 License No. NPF-3 Serial NO. 888 January 4, 1983 Attachment I Page 3 of 5 DH and LPI - con't.
LER NO.
TITLE DATE OF OCCURRENCE 33-78-75 DH flow less than 2800 gpm.
6/5/78 33-78-81 Lost DH flow (AD 110 opened) 6/15/78 33-78-94 DH Cooler 1-2 Outlet VLV DH-14A 7/13/78 inoperable.
33-79-45 Failure of pressurizer auxiliary 3/20/79 spray containment isolation valve DH 2735 to close.
33-79-114 DH Cooler 1 CCW outlet valve inoper-10/4/79 able.
33-79-113 One DH string #2 snubber inoperable.
11/16/79 33-79-145 DH Clr 1-1 CCW outlet valve CC 1467 12/8/79 inoperable.
33-80-54 Decay heat flow stopped due to loss 5/31/80 of flow indication on FI-DH2B.
33-80-53 Loss of decay heat flow when DH 11 5/28/80 closed due to procedural inadequacy.
33-80-43 DHR Train #2 inoperable due to DH14A 4/10/80 not opening beyond 20%.
33-80-71 DH flow rate less than 2800 gpm due 7/10/80 to procedural error.
32-80-12 Loss of DH flow due to personnel 7/24/80 error (1) procedure (2) error.
32-80-14 Loss of decay heat due to a personnel 8/13/80 error.
32-80-15 Protective curbs not installed in 9/5/80 Mechanical Penetration Rooms #3 & 4, due to an architect / engineer error.
DH/LPI total hours of inoperability reported is 303 hours0.00351 days <br />0.0842 hours <br />5.009921e-4 weeks <br />1.152915e-4 months <br />.
Deliberate entry into action statement for testing and/or planned maintenance in a plant mode that does not require equipment to be operable - 218 hours0.00252 days <br />0.0606 hours <br />3.604497e-4 weeks <br />8.2949e-5 months <br />.
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Docket No. 50-346 License No..NPF-3 Serial No. 888-January 4, 1983 Attachment I Page 4 or 5 CORE FLOOD LER NO.
TITLE DATE OF OCCURRENCE 33-79-18 Failure of CF isolation valve CF 1A 1/17/79 motor operator.
l 33-79-84 Failure of Core Flood Tank 1-1 level 7/8/79 transmitter (LT-CF3B2).
33-80-94 Gross back leakage detected through 10/8/80 CF 30 and out.of specification pressure in core flood tank.
There were 33 days reported in which Core Flood equipment and instruments were inoperable. However, none ever caused an entry into an action statement since there was either redundant instrumentation or the failure occurred in a mode that does not require CF system to be operable.
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Docket No. 50-346 License No. NPF-3 Serial No. 888 l
January 4, 1983 Attachment I Page 5 of 5 BWST LER NO.
TITLE DATE OF OCCURRENCE 33-77-107' Level indicator failed low SFAS ~
12/7/77 Ch. 3, BWST Trip.
33-78-01 BWST Level SEAS Ch. I failed low.
1/2/78
. 78-73 LT-1525B failed high.-
6/2/78 i
33-78-133 SFAS Channel 2 BWST Lo-Level Trip 11/10/78 Setpoint Out of Tolerance.
4 1
33-79-32 SFAS Channel 1 BWST level trans-2/17/79 i
mitter inoperable.
4 32-79-02
- Inadvertent closing of BWST isolation 3/6/79 valves DH 7A and DH 7B.
33-79-142 SFAS Channel 3 BWST level transmitter 12/10/78 frozen.
33-80-23 BWST level transmitter of SFAS Channel 2/17/80 3 out of tolerance due to freezing.
i s
BWST total hours of inoperability of equipment reported is 137 hrs, i
In each case, if the channel could not be restored to operable within one hour, it was placed in the action statement required
' tripped' condition. Once that was done, there was no further Tech.
f Spec. time requirements.
I Therefore, the total time that the system was actually affected was less than 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />.
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