ML19341C553
| ML19341C553 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 02/24/1981 |
| From: | Crouse R TOLEDO EDISON CO. |
| To: | Reid R Office of Nuclear Reactor Regulation |
| References | |
| RTR-NUREG-0737, RTR-NUREG-737, TASK-2.K.3, TASK-2.K.3.17, TASK-TM 689, TAC-45620, NUDOCS 8103030738 | |
| Download: ML19341C553 (4) | |
Text
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TOLE N h ED: SON Rcsso P Cucun n n ce n Docket No. 50-346 N-auuss sw License No. NPF-3 Serial No. 689 D'
February 24, 1981 g
/,J,M O 2 ISST A b, Director of Nuclear Reactor Regulation
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Attention:
Mr. Robert W. Reid, Chief Operating Reactors Branch No. 4
'3 Division of Licensing p
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United States Nuclear Regulatory Commission 4.p kj, T [-p Washington, D.C.
20555
Dear Mr. Reid:
This letter is to document a partial response to NUREG 6737, Clarification of TMI Action Plan Requirements, for Davis-Besse Nuclear Power Station Unit 1 (DB-1).
Item II K.3.17 deals with Emergency Core Cooling System (ECCS) outages.
Attached is a list of all such outages since issuance of the DB-1 3perating license on April 27, 1977.
The attached list of License Event Reports (LER) are listed by LER number with title of the event and date of occurrance. The LER's should contain all requested information of interest. Please contact us if additional information is desired. No further submittals are planned for NUREG 0737 item II K.3.17.
Very truly yours, ffh=__ -
RCP/ GAB Attachment ks a/aa cc: DB-1 NRC Resident Inspector kk I
l THE TCLEOO EDISON COMPANY EDISON PLAZA 300 MADISON AVENUE TOLEDO. OHIO 43652
'7 810303073S
1 i
Docket No. 50-346 License No. NPF-3 Serial No. 689 Februa ry 24, 1981 Page 1 of 3 H. P I.,
LER DATE OF
_{_
TITLE OCCURRENCE 33-77-28 Removed HPI line 1-2 from service for test 7/29/77*
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 1-2 due to 1/3/79 minimum recirc 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 exceeded 12/19/79 slenderness ratio of 200 33-80-64 HPI Pump 1-1 motor inboard and outboard bearing 6/23/80 thermocouple well broken BWSI LER DATE OF TITLE OCCURRENCE 33-77-107 Level indicator failed low SFAS Ch. 3 BWST Trip 12/7/77 33-78-01 BWST Level SFAS Ch. I failed low 1/2/78 33-78-73 LT-1525B failed high 6/2/78 33-78-133 SFAS Channel 2 BWST Lo Level Trip Setpoint Out 11/10/78 of Tolerance 33-79-32 SFAS Channel 1 BWST level transmitter inoper.
2/17/79 32-79-02 Inadvertent closing of BWST isolation valves 3/6/79 DH7A and DH7B 33-79-142 SFAS Channel 3 BWST level transmitter frozen 12/10/78 33-80-23 BWST level transmitter of SFAS Channel 3 out of 2/17/80 tolerance due to freezing
- During Plant Startup and Testing.
Docket No. 50-346 License No. NPF-3 Serial No. 689 February 24, 1981 Page 2 of 3 DH and LPI LER DATE OF
_i_
TITLE OCCURRENCE 32-77-2 Loss of DH Pump (Insalation-Installation) 5/27/77*
32-77-3 Loss of DH Pump (Maint. Instruct.-error) 5/28/77*
32-77-5 Loss of DH Flow by personnel error during per-6/12/77*
formance of SFAS monthly 32-77-6 Lo s of RC Flow due to error in DH Valve lineup 7/11/77*
32-77-8 Failure of DH stop check valve DH-77 7/17/77
- 32-77-9 Loss of DH flow caused by unauthorized work on 7/22/77*
pressure transmitter leaks 33-77-26 DH2733, DH pump 1-1 suction valve closed 7/24/77
- 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 GPM for less than 5 seconds (DH-12) 9/21/77 33-77-77 DH Valve pit open per FCR 77-034 (DH 12) 10/10/77 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. (switches AD 110 5/28/78 open) 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 Inoperable 7/13/78 j
33-79-45 Failure of pressurizer auxiliary spray contain-3/20/79 cent isolation valve DH 2735 to close
- During Plant Startup and Testing.
Docket No. 50-346 License No. NPF-3 Serial No. 689 February 24, 1981 Page 3 of 3 Dli and LPI LER DATE OF
_f/_
TITLE OCCURRENCE 33-79-114 DH Cooler 1 CCW outlet viv inoperable 10/4/79 33-79-113 One DH string #2 snubber inoperable 11/26/79 33-79-145 DH Clr 1-1 CCW outlet valve CC1467 inoperabic 12/8/79 33-80-54 Decay heat flow stopped due to loss of flow indi-5/31/80 cation on FI-DH2B 33-80-53 Loss of decay heat flow when DH11 closed due to 5/28/80 procedural inadequacy 33-80-43 DHR Train #2 inoperable due to DH14A not opening 4/10/80 beyond 20%
33-80-71 DH flow rate less than 2800 gpm due to procedural 7/10/80 error 32-80-12 Loss of DH flow due to personnel error (1) pro-7/24/80 cedure (2) error 32-80-14 Loss of decay heat due to a personnel error 8/13/80 32-80-15 Protective curbs not installed ir f.echanical 9/5/80 Penetration Rooms #3 & 4 due to an architect /
engineer error CORE FLOOD LER DATE OF TITLE OCCURRENCE 33-79-18 Failure of CF isolation valve CFIA motor oper-1/17/19 ator 33-79-84 Failure of Core Flood Tank 1-1 level transmitter 7/8/79 (LT-CF332) 33-80-94 Gross back leakage detected through CF30 and out 10/8/80 of specification pressure in core floc'l tank ks a/aa