ML20009F141
| ML20009F141 | |
| Person / Time | |
|---|---|
| Site: | Point Beach  |
| Issue date: | 07/20/1981 |
| From: | Clark R Office of Nuclear Reactor Regulation |
| To: | Burstein S WISCONSIN ELECTRIC POWER CO. |
| Shared Package | |
| ML20009F142 | List: |
| References | |
| REF-GTECI-A-44, REF-GTECI-EL, TASK-A-44, TASK-OR TAC-43944, TAC-43945, NUDOCS 8107290241 | |
| Download: ML20009F141 (16) | |
Text
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Docket flos. 50-266 ef and 50-301
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Mr. Sol Burstein p
S Executive Vice President
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[$' f/7 Wisconsin Electric Power Company 231 West Michigan Street Milwaukee, Wisconsin 53201
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Dear Mr. durstein:
Subject:
Information Request Regarding Station Blackout. Unresolved Safety Issue A-44, Point Beach fluclear Plant, Units 1 and 2 The NRC staff is currently addressing Unresolved Safety Issue (USI)
A-44, Station Blackout. The purpose of this work is to establish the safety significance of an event resulting in a loss of all alternating current power and, if significant, to consider the need for any specific changes. Over the past several years information requests have been forwarded which requested infomation that is being used in the USI analysis. Your interest and cooperation in the past have been appreciated.
At this time the USI A-44 effort is being directed toward determining the reliability of the onsite standby diesel generators. The enclosed questionnaire has been prepared to provide accurate operating experience to serve as a basis for such a determination. More specifically, its purpose is to obtain more detailed data than were available in previous diesel generator studies such as AEC-00E-ES-002, fiUREG/CR-0660, and ilDREG/CR-1362.
The questionnaire (cr,r.losure 1) requests information in tabular form and solicits data for the years 1976 through 1980, inclusive. There are four tables enclosed:
(1) Diesel Generator Operations Data, (2) Diesel cenerator Scheduled Down Time Record, (3) Diesel Generator Unscheduled Down Time Record, and (4) Onsite Emergency Diesel Generator and Auxiliary Equipnent Modifiestion Record. Also enclosed are examples of completed tables as well as a clarification of what should be entered. Please n-te that, although it may appear that only Licensee Event Report (LER) information is sought, data on all diesel generator malfunctions, independent of whether an LER was prepared, is requested.
Please find enclosed LER documentation (enclosure 2) presently docketed for your facility. You are requested to review these and to indicate if thera are other reports which have not been enclosed.
Finally, please find enclosed a copy of the appropriate portions of your response (enclosure 8107290241 810720 PDR ADOCK 05000266 i
F pop omcip sumew >
oan y pe ronu m paw mcu ous OFFICIAL RECORD COPY w o m s a vo
s Mr. Sol Burstrin 3) to our letter of March 6,1978 which requested related, but different, infornation. This is being forwarded for your information only and should aid in preparing Tables 1 through 4 In considerat on of the time and effort necessary to obtain this infomation, the conpletion of Table 4 should be considered voluntary. However, it should be noted that if operational and hardware modifications are not identified, the positive or negative influence of these features on emergency alternating current power reliability may be lott in the evaluation of the data. The expected effect is that our generic reliability estimates may be lower than that which actually exists.
The above in"ormation is requested in accordance with Sections 103.b.(3) and 161.c of the Atomic Energy Act of 1954, as amended. To meet our schedule requirements for the resolution of USI A-44 and to incorporate as nuch real experience as possible into the reliability model for emergency power systems, it is requested that your response be orovided within 120 days of the receipt of this letter. However, if this schedule is inconsistent with priority requirements for other licensing work, please provide us with your proposed date of response within 30 days.
We plan to complete our analysis of this data by February 1982. Your data should be provided by that time so that an accurate assessment of onsite alternating current power sources can be made, fir. P. Baranowsky has been designated Task Manager for USI A-44.
Should you have any questions, please feel free to contact him at (301) 443-5921. Your time and efforts are appreciated.
DISTRIBUTION
. Docket Files 50-266/301 Sincerely, NRC & Local PORs R. Clark TERA P. Kreutzer Original signed by GIB Reading T. Colburn Robert A. Clark 4
ORB #3 Reading T. Murley D. Eisenhut F. St.hroeder Robert A. Clark, Chief h
R. Purple K. Kniel Coerating Reactors Pranch #3 J. Roe P. norian Division of Licensing T. Novak P. Baranowsky Enc'osures:
J. Butts As Stated J. Heltemes 0 ELD cc: w/ enclosures I&E (3)
See next page ACRS (l@)
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This request for infon> tion was approved by the Office of Management and Budget uni; cleara, ' number 3150-9067 which expires t'ay 31, 1983.
l Coments on burden and G
'ication nay be directed to the Office of l
ttanagement and Budget, Wi Lington, D. C.
20503.
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Mr. Bruce Churchill, Esquire Mr. William Guldemond Shaw, Pittman, Potts and Trowbridge USNRC Resident Inspectors Office 1800 M Street, N. W.
6612 Nuclear Road Washington, D. C.
20036 Two Rivers, Wisconsin 54241 Joseph Mann Library 1516 Sixteenth Street Two Rivers, Wisconsin 54241 Mr. Glenn A. Reed, Manager Nuclear Operations Wisconsin Electric Power Company Point Beach Nuclear Plant 6610 Nuclear Road Two Rivers, Wisconsin 54241 Mr. Gordon Blaha Town Chairman Town of Two Creeks Route 3 Two Rivers, Wisconsin 54241 Ms. Kathleen M. Falk General Counsel Wisconsin's Environmental Decade 302 E. Washington Avenue Madison, Wisconsin 53703 U. S. Environmental Prctection Agency Federal Activities Branch Region V Office ATTN: EIS COORDINATOR 230 S. Dearborn Street Chicago, Illinois 60604 Chai rman Public Service Commission of Wisconsin Hills Farms State Office Building Madison, Wisconsin 53702 l
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Em lo:ura 1 - Pegi 3 TABl.E 3 Die: eel Generator Unsclieduled Downtime 1(ecord Plant Name Calendar Year 19 _
Unit No.
I.EK Alast rac t N.
Downtime llours Comunents - If any of clie reported failures would not have been a (Ref er to at tch g,g g
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e 1 Abstract s) Total Trouble-Parts. Del - Repair /
Ref er to attactied LERs or Elie failures listed in Table 1.
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T ~~ - Page 5 TABLE ENTRIES
~~
EXPLANATION / CLARIFICATION T. I ol t l.
. Reason for DG Operation and Scheduled Duratica of Run: This column contains the different categories of diesel generator operation. The estegories are structured such that the start and run conditions are similar for all of the tests in a category. In this column, enter the scheduled run duration for each of the test categories. Also enter the number of diesel generator starts that are done for each type of test. For example, if on the monthly test there is one start from the local een-trols and one start from the remote controts, the number of starts per test is two.
If two or more diesels are started simultaneously for any reason, please record it as a multiple start.
DG No.: Ente e each diesel generator's identification number in this column as shown in the example.
Number of Starts: Enter the sum of the successful and unsuccessful start attempts for each categon. If there are several starts for each test, include all of them, but be certain to record the number of starts per test in column one.
Numoer of Failures: Enter the sum of the failures for each category. A failure is counted if the objectives of the test are not aghieved. A subsystem failure that does not cause failure of the diesel generator system is not counted as a failure.
If the diesel generator did not start, run, and load as reqstred by the test, a failura should be recorded. However, if the ciesel generator would have supplied power in some capacity for an emergency, please explain in Table 3.
For example, if the diesel started on the second attempt or the diesel was aripped to repair a minor oil lealc tStt would not have been a probism in an emergency, this should be noted in Table 3.
J Percent Loading of DG (KW): Enter the percentag=. that the diesel is loaded for each category. The centinuous kilowatt rating is enusidered to be 100T.
Duration of Run Before Stop for each UG Failure: Record the run-time for each f ailure. If the diesel failed to start, the run-tiae would be 0 min.
Identification of Failures: Attached to this questiminaire are abstracts of the LERs related to the diesel generators. The abstracts are nu:roered starting vich one.
Refer to this number to idantify the failures, but if thera was a failure for which there is no abstract, assign the failure a number and include it in Table 3.
1 Table 2 Reason for Downtime: Enter in this column the categories of schedule main-tenance that make the diesel generator unavailable for emergency service.
If the diesel generater is unavailable for e.ergency service during surveillance test ng, report that also.
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Hours of Downtime: Enter the number of hours that the diesel generator is unavailable for emergency service. Report the hours ender the column reactor shutdown or reactor not shutdown as appropriate.
Comments: Comment on time to return to service after maintenance has begun, or other pertinent information.
Table 3 LER Abstract No. (Refer to attached LER Abstracts): The attached LERs are nu=bered starting from one. Refer to this LER number in column one.
Each LER abstract should have an entry in this table.
If there was a failure not included in the attached abstracts, please assign it a number and enter it in this table.
Downti=e Hours:
Enter the number of hours that the diesel generator is unavailabic for emergency service.
Subdivide these total hours into troubleshooting, parts delivery, and remir or replacement.
Corments: Use this column to comment on the downti=.a and the failure.
If the reported failure was only a technical specification violttion, but would not be a complete failure of the diesel generater to supply power or would only be a delay, please elaborate in this column.
Table 4 Equipment or procedure modified: List in this column the equip =ent or 1.rocedures related to the e=ergency onsite power system that have been modified since the reacter became critical.
Date of Mod.:
Enter the date that the modification was ce=pleted.
Reasce #ct Modification and Desired I=provement: Report the reason fer the modification and the desired o ~ observed i=provement in the system.
Description of Modification: 3rief1f describe what = edification '.:as
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TAhl.E 2 - Page 8 Plcnt Nrme i*'
(Sample)
D*cael Generator Scheduled Downtims Record Unit Ilo.
Calendar Year 19 _
~
llours of Downtime Reason for React or shutdoun Reactor not sliutdown Gements
'U{]F ]F DGI' 7CT l-Downtime Dgf
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DCI DCI Scheduled Halutenance 4
Preventive 24 16 16 Maintenance Semi-annual &
Annual i
7 Equipment i
inodi fica t ion 8
8 8
Hodified lube oil on each diesel. Diesels down at :lt f ferent times.
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Time DC is unovoilable
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tkmn 4 lirs per test 8
48 4D 48 l
Diesel cannot be automatically started l
during test or for three hours afte wards I
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Enclosure ! - Pags 9 TAnit 3 Dicael Generator Unacheduled Downtime Racord Picat Nxme X X,X (Sample)
Calendar Year 19__
Unit No.
12, Ni
..y I.Elt Abs t ract Ni Downtime llours men a - It any of time regiorM faHures wouM not liave been a (itefer to attcl falture under emergency conditions, please explain here, a
u c-a a,
e een t Re er oa aclic s r he failures listed in Tatile 1.
ed I. Ell Abstract s)Ilours shoot ieng tverney teplace 1
4 1
1 2
i 2
3 0.5 1
1.5 3
12 1
10 1
4
,0 0
0 0
Diesel started in 15 aec instead of required 10 sec 5
0 0
0 0
Secondary air pressure low.
Primary air satisfactory.
6 0
0 0
0 Secondary air pressure low.
Primary air satisfactory.
7 0
0 0
0 Diesel atarted in 20 eec instead of required 50 sec.
0 0
9 0
0 False DC start signal. DC satinfactqry
^
Ho 1. Ell 9
0 0
0 0
Required DC starts af ter the failure of one diesel.
10 0
0 0
0 Starts to verify repaire.
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Onsite Emergency Diesel Cenarator and l*le n t Nina (C ampi.s)
Aust11ery Equipment Ho.lification Record Unit No.
Equipment or Date of I:cason for Hodificatsan and procedure Hod.
Desired Improven.ent Description of Hodification modified Lube oil system 2/76 Improve turtio charger lubrication Soak-1ack pump was removed and replaced with a 4
for emergency starts.
continuous lube oil pump.
New pump also continuously lubricates the crankshatt.
Helay cabinets 1/78 Prevent dirt from fouling relay Cabinet dooro with gaskets were installed.
contacts.
Instrament 6/79 Eliminate vibration damage to Cbutrol and monitoring instrument panei was Relocation instruments relocated from the engine skids to a free standing panel mounted on the engine room a
floor.
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1 PAbE 446 ACCFNbl(W NU.
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NRC. hEG ION 3.
JAN 16.
1961. DOCKtT LG-26o.
T Y P C --P a~ 4 N F G--w E S T. AE--TECH. DC5 NO.--ol01270574
- AVAIL AVAILAblulli - NRC PUbLIC DOCUMENT ROOM. 1717 H STREET.
a Ab H l h G T Cis,
b.
C.
20555 (US CENTb/PAGE -- MINIMUM CHARGE A2.00) l abs 14ACl D Al l LF cVtNT - 121760.
PUwEs LEVEL - 000%.
CAUSE - SLIPPACE OF FLLAILLt aHAFT COUPLING.
DLklNG TESTING THC 40 EMERGENCY DIESEL OLNhF AT GR 'CO% MON TQ UNITS 1 nND 2) FAILED TG CLOSE IN ON THE LUS.
ADtGUATL ENGINC SPEt0 WAS NOT SEN5td BY THE GUS dhEAKEh CLU S IN L LOGIL DOE TO SLIPPAGE OF A GENERAL MOTORb C LEC T kul all ! VL DIVISION FLExlELE SHAFT COUPLINC (P.N.
8276102)
JN THE Sr:dO SEN51NG FRCOutNCY GCNCRATuk DRIVE SHAFT.
THE COUPLING 4Ab d EC UH d D.
- COMPJNEhI CDOC t NG IN L-LNG I N LS. I Nl E MN AL COMBUSTION l SYS IC M Coat EL-EMtsu otNusATUR SYb b CONTROLS 5b/b/000uGGI-OGOOOO3//
C
, ACCL L S I.)N NO.
0 G4 015 7 0.. b
=
71TL1 DlibdL i.N i k A T OR FAILb TO START AI PQ1NT BEACH I l Co h uTH
=!sCON51a-nlcnlGAN P O w t.R CO.
' DAlt 19n0 TYPu
, MdMu Lin a/Ltn c u -0 J4 TO U.S.
NRC. REGION 3.
APR 25.
1960. GOCKET l
60-46o.
i Y P t -- J w R. taF G --w L b l. AE--StCH AVAIL AVAILALILITY -NHC PuSLIC DOCUMhNT ROOM. 171/ H STREET.
JAbHINGloN.
S.
C.
205ub (00 CENTS /PAGE -- MINIMUM CHARGE
- E.uG)
Abbl7ACI LATE OF ;ViNT - 040vbb.
POWER LEVEL - 0 7 9 %..
CAUSE - ShCKEN VAwd la STAnTING AIR MOTCR.
AT 0422. alTH THE PLANT AT NORMAL STEADY STAla. TH t iMERGtNCY OltbCL GENERATOR FAILCD TO START D Um IN G A 4GuilNE SURVCILLANCE TEST.
A SECOND 51 ART ATTEMPT AT l
0435 wAb ALLO UNSUCCESSFLL.
Al TH1b TIME ThE 4D dDG WAS UCCLAkt3 INOvCRAcut ANJ <CMOVED FROM SERVICE FOR MAINTENANCC.
l T he OPCR At lL IT Y OF THE MtuUNDANT EDG WAS VERIFIED AT 0420.
THE F ld LT binni #41Lund wAb CAU5c0 6Y A 3RCKEN VANd IN THC STAR 11NG l
A lk MUTuk.
lHE SECONU START FAILURE COULD HAVc OcLN CAUSED HY Ted Ala Muluk uw oY A SHUTDOeN TIMER INITIATED BY THE OPERATOR FLLLOwlNO in; FIAST FAILVRE.
THE AIR MOTOR mAb W E P L A CE D ANC
~ A5 VERIFIED.
A RECONOANT START OPEW A L I L 61 Y CF IHE DitSEL e
SYLIER ndvLD H AV E FUNCTIONLD ON LOSS OF AC.
CLMJLNtWI CGJL M C T GR A -F G T u R '.
SYblCM C ou' E-LMe%L utNcwAlON SYS C CONTRCL5 65/5/0000001-000000e//
3 ACCL b S IO N NG.
CGZUlbitb9 llsTLc ulth=L L L N L A A T OR FAlth TO biART Al POIN1 dEACM 1 lCU4 eau 1H a l btO N E l t.-M I LH IG A N POadA Co.
DAi; 197' l
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NRC. MLLlDA 2,
OCT 19.
1979. DUCKET j
j 60-2o0.
l Y F t --Pw R.
FFG--atbl.
AE--etch CONTROL--0272OI
!AVAll mVAILAblLilt - NR L PusLIC DOCUMENT ROOM. 1717 H STREET.
=AbMINv10N J.C.
LuS55. (J6 /PAGE -- MINIMUM CMARUC 12.00)
} Ar. N A L T L AI C Cr : VENT - 100479. power LtVEL - 100%. CAubc - FAULlY l
OLVLANoh.
Al 04 0 u HGvRs.
10-3-79, lHe 30 EMLRGtNCY DIESEL l
btN: 4 Al ts ( G r.C OF T*O) PAILED TO ElAkT FCR 11E VUNTHLY l
IECHNICAL LPLCIFILAllGN TdbT.
THE 4D DIESEL GCNERATOR *AS blAWTtb IU VL41F Y ITS GPEkAUILITY.
THL 3D Dit$tL GENERATOE WAb RLSTORet TL SERVICE AT 1720 HOUkb.
10-3-79.
AFTEn COMPLETION OF 4 tHAlhL AAD e TE bl WUN.
THE GM LLECTROMOT;VL Div lSION 999-20 Dit5EL GtALWAIGR FAILED TO STAPl LCCAUSE THE ADODAARD UG6 DIAL LLNT4OL OtsVENNDR (JLLLLIIN NU.
vaOG4G) LCAO LIMIT bTRAP STUCK IN lHE 5806 rOLillGN.
IME FAULlY GOVERNOR WAS HtPLACED wlTH A LPAhi AND eAb AtlVRNEL 1G TMc FACTORY.
COMRONtN1 C%t 4 t C F u rs - f,t C h A r.1 L A L FUNC11LN UNITS S Y b i t.* COut i E-C.%C h o vtatAATbR SY b L CON 1ROLS
PAGE 449 55 / t / O c v J O U I -0 0 0 00 0e / /
4 ACLESSION NO.
0C201495 3
.TalLt DILbEL Gs.NL k A T OR V. l GH T bE UVERLOALED BY SIMULTANEOUS SI ACTUAllO % Al POIN1 dLACH 1 CCHP A U f n
- r. IbtO NS 1.v-M 1 CH 16 AN PO*tR CO.
DAIc.
I979 lYPE o
Mt' MU LTR w/Ltk 79-008 10 U.b.
NRC. REGION 3.
MAY 21, 1979. DOCKET b O-i t, b. l v PL-PW R. MFG--WEST, AE--SECH CONlROL--025665 AVAll AVAILAHILITY - N4C PUBLIC DOCUMENT ROOM. 1717 H STREET.
TASHINuTON U.C. 20SSd. (Oe /PAGt -- M I NI MUM CHARGb $2 00)
- AbdTRACT Dale OF EVENT - 0o0279. POWER LEVtL - 100%. CAUSt - DESIGN DEFIClENLY.
DVWING i. RdVIEW OF AN NRC M AND A TE TO PLACE P RE SSul 12 ti k LiiVEL H I S T A6 Lti b I f% THE TRIPPED CONDITION 11 WAS UlSC3VEkiD T nA T T H2 m E WAS A R E fd OT E POSSidlLITY THAT THIS C CM l uuh A T I UI. COULO LCAD TO SIMULTANEOUS SAFETY INJCCTION IN SOTH UN115 AND Rhbull IN r.MERGENCY DIEbcL OVERLUADING.
THIS SVENT Ib ALSU AP PL I C Ab Lt TO UN1T 2.
TO REDUCC THE EXTREMELY 4tMUTt POSSlolLITY OF A SIMULTANEOUS SAFETY I N J tic T I ON TJ Ph0bAc!L1 TIED CO t.S l S T EN T w1TH PLANT DESIGN. THc PRtE SSUR I Z ER PACSSUkE Lo b lC AND P O '* E R SUPPLIES HAVE 6 ti E N CHANGED.
.CUWONLNT COOL GCNL4 A-L CNt R AT OR S SY b Ib M COOL it-tMCWL 6ENtR ATUN SYb & C O N TR O LS tb / >/OO Guu C 1 -uOv 00Gd //
b
. ACCESLlL N NC.
%Z u l 49 210
'llit.
POTENTIAL P H eJ LL M w!TH DlbSCL TUWSOCHARGER SEARING LLd71 CATION AT P'J I N T d k A uM 1
- Cbwu A u st-4IStuNbIN-m1CHIGAN PGwER CO.
SCAlt 1979 Tyst w
ME
- C LTh w/Lth 79-OG7 10 U.S.
NRC, HEG10N 3,
MAY G7.
1974. DOCKET t O.: m.. Tvee -Pa x. S e u --w tE S T. AE--dECH CONTROL--025081
. AVAIL AVAILA31L11Y - NWC PUBLic DOCUMENT ROOM. 1717 H STREET.
.v Ab H I N o l ut. 0.0. 205Sb, (Od /PAGE -- M I fel MUM CHARbt $2.00)
9.
POwtR LEVEL - 100%. CAubE - D E S I GN C,<R u a. MANbF AC TURE4 UF THE PLANT EMERGENCY DIESCLS HAS ISSUED A'
OULLETIN GW A POTENTIAL PRO 3 LEY alTH TLRHOCHARGER 6 EARING L U M k ! C A T I O t..
IF ENGINE RECEIVES A RcPEAT RAPID STAR 1 COINCILc*;T alTH A LOSb LF AC uETetEN IS AND 160 MINUTES AFTER A PkbVluuS HOI RUN.
TURBOCHARGER BEAhlNbS MAY bME Aft.
A SdRIES OF S UC r i STAxTb MAY LEAD TO TURbOCM/MGER FAILURE.
THIS COULD OCCU4 HECAUSi MAIN LUBE OIL SYSTEM " P R I M ti" MAY NOT bL MAINTAINED vuRING TnlS P.i R I O D. NO SERIOUb SAFETY ISSUE EXISTS PROVIDED SUCH STAxTS AR E A VO I DED. AO M I N I S TR Al l VE CONTROLS MAVE BECN INSTITUTtD To ef4SURL THAT Al LbAST GNE'OltStL 15 AVAILAdLE AT ALL T I N.c h ANC. TU CN SUR E THAT SULH STARTS ARE AVOIDED.
YAt=UFACIvRER IE UtVELOP1NC A MODIFICATlON PACKAGE wHICH-WILL WCVcNI int ABOVE PkOLLEM FROM OCCU4 RING.
RACAAGE WILL DE INSTALLtL AS SOON AS PRACTICAOLL AFTER IT GECOMES AVAILASLE.
C u iP O N L tdt CGDC Nu I NL -E r.O I NCb. I t.T E AN AL LOMt-US T I UN
.SYSTc" CU9t CE-t NL n t Ld.L4ATOn Lyd G CONTROLS tb /b / cu vuu v s -O G J 0v uG / /
c ACCdS013N M O LZ ul 3Mab IIILc b ]C bdL L t-N t-N AT (N GRLAAER r; A I L S TO LLOSL ON TO ESF dVS Al POINT W.ACH I
.CUwsAUTn
, IbCOP.S 1: :: LtC TR I C POwcR CO..
MILWAUNEE. n1 UAit 197L Iyut
. M: R 2 PGb. L14 c./LtH /6 -O c e / 03 L -O TO NRC OFFICE OF 1 O E.
REGION 111. JUNu 5.
a47h. LGCAEl dO-2ec,.
TYPE
^>R.
MFG--wtST..
o t--i.n t n T E L
. AVAIL AVAILABILITY - Nnt PU5L1C DOCUNtNT AOOM. 1717 H STREET.
wASHINLlur4.
b.
C.
20555 (OS CdNTS/PAGE -- MINIMUM CHARCE R.00)
' An b 'I 4 aC T JAlt uF EVCN1 - 051 Lye.
POWER Lt. V EL - 85'.
CAUSC - DEFECTIVE 4
L A T CH -t ht L A I NG SwlfLH.
wnlLC ATTEMPTING TO PHASL THE 4D Ei'E k oE NLY D 1 tbt L,cNEhATOR DURINO A TEST AT 041O HOURS ON
$ 76. 6 R AA LR l-Ai2-ou *OULO NOl CLOSE CN TO ENGINELnED S AFluuAnUb Cub 1 - A O c..
1HE 3kE A 4 W FAILCD 10 CLOSE SECAUSc A mub T tratrcVLc c LE CTH IC CAT.
NC. 662 Al4 3 HOI L A TC H-C Hc CK IN G S a' ! T C H aAS DE F LCT ! v '.
Inc balTCH wAS AcPLACED IN K l f.D.
AFTER BREAKER l - A b 2 -c. c.. A b WEPAlmtb. A SUCCESSFUL TEST HUN CF THE 4D EDG WAS CLMPLLTis Al 111J HOUkb. 5 7 c.
~ _. _ _
_ ~.
. ~. _..
1 9
Sb/ a/C G GV O L I -64 b tD od / /
6 CONTINUATION I
~ PAGE 450 Luv.90 NE N T LJUF LN1 <n-Cl4CUIT CLOSERS /INTERkUPTcRt SYSTLM Cast t r.-d 1 t R G GENER AT OR LY b C LLNTh0L5
.-5b/5/OLCucul-ovvvbod//
7 ACCL5SION NO.
0 c4 013* u00 T11Lc s lE S.:L C NE H ATOQ FAILS TO START AT POINT dEACH I CC4PAUTH a lSC UN51t. M I LH IG AN POWER CO..
WI DATL 1477 TYPr.
J NCMD 2 PGS. LTP w/LER S0-26o/77-Oo TG Nhc OFF ICE OF 1 C E.
REGIO" 111. JULY 21.
1977. DOCNCT 50-20o. TYPE--PWH, M F G --W E ST.,
al--ULChTEL AVAll AVAILAalLITY - NRC PU9LIC DOLUMENT ROOM. 1717 H STREET.
.vAbhlNClON, L.
C.
2Gb45 (06 CENTS /PAGE -- MINIMUM CHARGE 5i.30)
AbSihACT DATt OF EVENT - 062977.
POWER level - 0%.
CAUSE - SET POINT onlFT IN SPCLD SCNSING RELAY.
DURING A TEST. EMERGENCY DIESEL uCNE4AT0n 3L. COMkJN TO bOTH UNITS. FAILED TO START OUC TO A 4
STAkTifL SCCUtNCE LOGIC FAILURE IN ETART CIRCUIT 2.
THE LOCAL CCNTRUL PANEL *Ab UbtU TC STAhT THC ENGINE.
HOwCVER, A SECONC AITEMPT Fh0M T he LOCAL PANcL FAILED.
THE GM ELECTROMOTIVE DIV.
M LO C L tMJ 64L5014 SPEED St NS ING P ANEL ASSEMBLY RELAY PICKUP SET POINT MAC OklFTED CAUSING THE S T AR T ING SEQUENCE LOGIC FAILURE
- HEN INDICATED SPEEL AAb INSUFFICicNT AFTER 4 SEC. INTO THE dttuiNLc.
THe SET POINT AAS RESdT.
COvP)NENT CuGi uNGINE-ENGINED. INTERNAL COMOUSTION SYa1EM COvL ci-C Mr.R L ubNERATOk Lyd L CCNTROLS bb/u/00vuo01-GuOvuv6//
b ACLEdblON NO.
0 0Z O 122 5 35 TITLt vicdct ( ctiE R AT LR CIRCUIT 6REAKER TRIPS AT POINT SCACH 1 COMPAUlH nibcuNblN MIChlGAN POWER CU..
WI CATE 1977 TYut u
MLttu
? PG5. Ltu Su-26o/.7-01 TO NkC, F E r2.
21.
1977. DOCKET bO-Eco.
T YP E --P
- R. M FG -- w d S l.. AC--bECHTEL AVAIL AVAILAMILITY - N9C PUBLll OGCUMENT ROOM. 1717 H STREET.
- A b h l N G T O.N.
L.
C.
2C545 (06 CEN1S/PAGE -- MINIMUM CHARGC tE.00)
Anbl<ACT J li UF LVEN1 - 020977.
POWER LEVtL - 100%.
CAUSE - DIRT IN OVERCUHhtNT ki L A Y.
DLRING TESTING OF DIESEL GENERATOR 30.
C IR Cull cREAKER l-A52-60 TRIPPED IMMEDIATELY UPON 6EING CLOSED dumt ATit 4P T ING TO PMASE THE GENERATOR TO THE A105 6US.
THE C IR Cu l T uREAKER WAb TRIPPED BY A WESTINGHOUbL STYLE 1675236A TYPC CO -b O V CR CUR RE N T RELAY.
DIR1 IN THE LO m' ER SCARING Oc THE OVeaCUNGENI RELAY TIMING JISC PREVENTED THE 01SL FROM FULLY HLSET11NG "OLLUWING ANY SHORT SURGE OF OVERCURRENT.
THE RELAY
- AE CLEANEv. A ND TCSTED $UCCESSFULLY.
COP *uuN: N T CO D:.
4mLAYX mcLAYb d' - t*1L H L biNtR AT Cn dYb & CONTHOLS SYSitM Coot c
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