ML18139B472
| ML18139B472 | |
| Person / Time | |
|---|---|
| Site: | Surry, North Anna  |
| Issue date: | 07/24/1981 |
| From: | Clark R Office of Nuclear Reactor Regulation |
| To: | Leasburg R VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| Shared Package | |
| ML18139B473 | List: |
| References | |
| REF-GTECI-A-44, REF-GTECI-EL, TASK-A-44, TASK-OR NUDOCS 8108060162 | |
| Download: ML18139B472 (18) | |
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Docket Nos.Cso-338) 50 -
and Mr. R.H. Leasburg Vice President - Nuclear Operations Virginia Electric and Power Company Post Office Box 26666 Richmond, Virginia 23261
Dear Mr. Eea*sburg:
JUL 2 4 iS,<Biu vcs /fl:S-o/6
Subject:
Information Request Regarding Station Blackout, Unresolved Safety Issue A-44, North Anna Power Station, Units 1 and 2 and Surry Power Station, 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 qf a11 alternating current power and, if significant, to consider the need for any specific changes. Over the past several years information re'?tiests hive been forwarded which requested information 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-OOE-ES-002, NUREG/CR~0660, and NUREG/CR-1362.
The questionnaire (enclosure 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 Generator Scheduled Down Time Record, (3) Diesel Generator Unscheduled Down Time Record, and (4) Onsite Emergency Diesel Generator and Auxiliary Equipment Modification Record. Also enclosed are examples of completed tables as well as a clarification what should be entered. Please note that, although it may appear that only Licensee Event Report (LER) information is sought; data on* all diesel generator ma1 functions, 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 there are other reports which have not been-enclosed.
Fina-11y-, please find enclosed a copy of the appropriate
- portions of your response:cc.:Cenelosurce. -.. ~
OFFlCE~
~UR NAME.
- * * * * * * * * * * * * * * * * * *I., * * * * * * * * * * * * * * * * * * * *' * * * * *, * * * * * * * * * * * * * * * *; ** * ** * ** * * * * * * * * * * * * * * * * '.
- * * * * * * * * * * * * * * * * * * * *; * * ~ * * * * *
- o * * * * * *** * * * *: ** * * * * * * * * * * * * * * * * * *
- DATE~.............................................................
~....... *......... -... *... ~ :.
NRC FORM 318 11El/80l NRCM 240 OFFICtAL RECORD COPY
'< USGPO: 1980-329*324.
- 3) to our letter of March 6, 1978 which requested related~ but different, information.
Tlris is being forwarded for your information only and should aid in preparing Tables l through 4-.
In consideration of the time and effort necessary to obtain this information, the completion of Table 4 should b~ 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 lost 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 information 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 much real experience as possible into the reliability model for emergency power systems, it is requested that your response be provided within 120 days of the receipt of this letter. However, if this schedule is i neons i stent with priority requirements for other 1i cens ing work, please provide us with your proposed date of response within 30 da.vs.
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.
Mr. P. Baranowsky has been designated Task Manager for USI A-44.
you have any questions, please feel free to contact him at (301) 5921.
Your time and efforts are appreciated.
DISTRIBUTION Docket Files 50-338/339/280/281 NRC & Local PDRs T. Novak TERA
. R. Clark GIB Reading S. Varga ORB3 & ORBl Reading Files D. Eisenhut L. Engle R. Purple D. Neighbors J. Roe C. Parrish J. Heltemes P. Kreutzer
Enclosures:
T. Murley As Stated F. Schroeder K. Kni el cc: w/encl osures. P. Nori an See next page P. Baranowsky J. Butts Sincerely,
- Original sign~ by
- .. Robert J\\. Ciark
'.Robert A. Clark, Chief
. Operating Reactors Branch fl3 Division of Licensing Should 4 This request for information was approved by the Office of Management and Budget under cl ea ranee. number 315Q;..QQ67 v1hi ch expires May 31, 1983.
Corrrnents on burden-and duplication may be directed to the Office of
. M~nagement ~nd Budget, Washington, D. C.
20503.
NRG FORM 318 (10-80) NRCM 0240 0 FF ICIAL RECORD COPY USGPO: 1981-335*960
ti i l -.
e Virginia Electric and Power Company cc:
Richard M. Fo5ter, Esquir~
Musick, Williamson,*Schwartz, Leavenworth & Cope, P.C.
P. 0. Brii.4579. *--*.
Boulder, Colorado 80306 -
Michael W~ Maupin, Esquire Hunton, Wi'l 1 i ams, Gay* and Gibson P. 0. Boi 1535_
Richmond, Virginia 23212
- Alderman Library Manuscripts P_e.partment University of Virg.inia Charlottesville, Vfrgini~ 22901 Mr. Edward Kube
. Board of Supervisors
. Louisa County Courthouse P. O. Box 27 Louisa,. Virgihia 23093 Ellyn R.. Weiss-, Esquire Sheldon~ Harman,- Roisman and* Weiss 1725 l Street, N.W~-Suite 506 Washington, D. C.
20006. -
Mr. W. R. Cartwright, Station Manager P. 0. Box A02.
Mineral; Virginia 23117
- Mr. Anthony Gambardel Ta Off_i ce of the Attorney General 11 South 12th Street - Room 308 Richmond, Virginia 23219 Mr.*..Edward Webster Resident Inspector/North Anna
. c/o U.S.N.R;c.
Route 2-, Box _78A
_ Mineral, Virgini~ 23117
- Mr.. J. H. Ferguson Executive Vice Presirlent - Power Virginia Electric and Power Company Post Office Box 26666 Richmond, Virginia 23261 e
Mr. James Torson 501 Leroy Socorro, New Mexico 87891 Mrs. Margaret Dietrich Rout~ 2, Box 568 Gordonsville, Virginia 22042 Mr. James c~ Dunstance State Corporation Commisifon Commonwealth of Virg,inia Blandon Building*
Richmond, Virginia 23209 Mrs. June Allen North Ahna Environmental Co~lition 8720. Lockmoor -Ci rel e Wichita, Kansas 67207
- U~S. Environmental Protection _Agency.
Region III Office ATTN:
EIS COORDINATOR CurtisBuilding *
- 6th and Wal nut Streets Phil adel phi a, Pennsylvania - 19106 Mr. Paul -w. Purdom
- Environmental Studies Iristit~te Drexel University 32nd and Chestnut Streets -
Philar1elphia, Pennsylvania 19104 Atomic Safety and Licensing Appeal Board Panel U.S. Nuclear Regulatory Commission Washington, D. C.
20555
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,Hcauon for DG Operation 1 &scheduled DG Durntion of R1111 No~
Ti!ch. Spec Req 1d Test DG Actual Demand Starts not for Testing fliscellaneous Tests (Specify Type)
D~eeel. G~nerator Operations Dntn Calendar Year 19 Number Nmuber Percent Duration of Run of ot*
Loading of Defore Stop For Starts*
FailureE DG (KW)
- Each DG Failure I
Enclosure l - Pagel 1'1;111t fku11e, -----
'.µnit No.
1 Iden t 1f1ca tion of Failure*
fRefer to attached J.Ims or Table 3}
-e
l'Alll.li: 2 Reason for Downtime.
DGU Scheduled Maintenance
- ~ ',
'rime DG ts unavai I able for emergency service because of required te*sts Reacto.r Dteael Generator Sched~led Downtime Record Calendar Year 19 llours of. Downtime shutdown Re'actor.not shutdown uuu DG' UuU UGU m:i DGU UUf UlW llC-0
' - Page 2 Plant Nct1ne ____ _
Unit No.
Commen.ts e
i e
'l'AUL~ 3 Pleael Generator Unscheduled Downtime ltecord Calendar Year 19
~nclosure 1 - Page 3 Plant Name Unt't No, LER Abstract N, Downtime Hours (Refer to attcl Total Trouble-IParts,Del Repair/
ed LER Abstracl s) 11 ours shooting lverv,etcteplace Comments -
If any ot the *reported failures would not have been a failure und~r emergency conditions, please explain here, Refer to attached LERs or the failures listed in Table l.
e
TAUi.i~ It Equipment or procedure modified Dute of Mod.
Onsite Emergency l)iesel Gen1n-11tor,rnJ Au1'111ary Equipment Hodificutian llecard Reason far Modification and Desired Improvement - Page 4 l'lnnt Nau1e -----
Unit Na.
Description of Modificnt1on
,(
..closure 1 - P ag~ 5 TABLE ENTRIES EXPlANATI ON/CLARI FI CATION Table 1-Reason_ for DG Operation and Scheduled Duration of Run:
This column contains the different categories of diesel generator operation.
The categories 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 th_e number of diesel generator starts*thatare done* for each type of test. For example' if on the monthly test there is one start from the local. con-trols and one start from the remote controls, 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.:
Enter 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 category. 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.
Number of Failures:
Enter the sum of the failures for each category.
A failure is counted if the objectives of the test_ *are not achieved.* 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 required by the test, a failure should be_
recorded.* However, if the diesel 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 tripped to repair a minor oil leak that would not have been a problem in an emergency, _ this should be noted in Table 3. -
Percent Loading of DG (KW):
loaded for each category.
to be 100%.
Enter the percentage that the diesel is The continuous kilowatt rating is considered Duration of Run Before Stop for each DG Failure:
Record the run-tiine for each.failure. If the diesel failed to start, the run-time would be O min.
Identification of Failures: Attached to this questionnaire are abstracts of the LERs related to the diesel generators.
The abs*tracts are numbered starting with one.
Refer to this* number to identify the failures., but if there was a-failure for which there.is no abstract, assign the failure a number* and include it in Table 3.
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 generator ts unavailable for emergency service during su:cveillance test:tng, report that also *
- e. - Page 6.
2 Table 2 (cont'd)
Hours of Downtime:
Enter the number of hours that the diesel generator is unavailable. for emergency service.
Report the hours under the column reactor shutdown or reacto.r not shutdown as a*ppropriate.
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 numbered 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.
Downtime.Hours:. Enter the number of hours that the diesel generator is unavailable for emergency service.
Subdivide.these total hours
'into troubleshooting,. parts deliv:ery' and repair or replacement. '
Comments:
Use this c.olumn to comment on. the downtime and the failure.
'!-f the reported failure was only a technical specification violation, but* would not be a complete failure of the diesel generator. to.
supply*power or would only be a delay, please elaborate in this column.
Table 4 Equipme:nt or procedure modified:
List in. this column the equipment or procedures related to the emergency onsite power system that have been modified since the reactor became critical.
Date of Mod~:
Enter the date that the modification was completed.
Reason for Modification and Desired Improvement:
Report the reason for the modification and the desired or observed improvement in the system.
Description*of Modification: Briefly describe what modification was made.
- ... f TAUi.i! l (Sample}
Reason for DG Operation, & scheduled Duration of Run Tech, Spec*Rec1 1d Test Monthly Sur_veillance
( I hour)
(I start/test)
Refueling Outage (12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />)
(I start/test)
Mlsc, Tech Spec Req'd Tests (Slart Only)
(I start/test)
DG Actual Demand Starts not for Te!lting SIAS Signal (I hour)
Hlacellaneous Tests (Specify Type)
Verify Repairs (not full-test)
. (Start Only)
DG No.
1 2
J 1
2 3
l 2
3 1
2
- 3.
l 2
3 Dies~l Generator Operations Dutu Calendar Year 1916.
Number
'Numb.er Percent Duration of Run of of Loading of Defore Stop Fot*
Starts Llailures DG (KW)
Each OG Failure 12 2
100 30 mtn: 0 min n
0 100 12 l
100
. 0 min 1
0 100 l
0 lOQ l
l 100 l hour 2
0 100 4
p 100 2
0 100 l
0 0
l Q
(l l
()
0 6
0 I
0 min 4
0 0
4 0
0 I - Pagel l!lant Name:
xxx Unit No.
l & 2 Identification of Failures
{Refer to attached I.Ells or Table 3}
LER D l & 4 LER /J2 LEll I 3*
Table 3 No. 9 LER '
8 Multiele $tart of 3 DGs II II
. II II Table 3 u 10
'J
TAllLE 2 (Sample)
Reason for Downtime Scheduled Maintenance Preventive Maintenance Semi-annual &
Annual Equipment Modification Time DG is unavailable for emergency aervicE because of required tests Down 4 hrs per test Diesel Generator Scheduled Downtime Record Calendar Year 19 Hours of Downtime Reactor ~hutdown
_Reactor not shutdown u~;u 1
u~u u~u UuU DCT y D~I/
D~O DGO 24 16 16 8
8 8
I 8
48 40 48
/
DGII Enclosure l - Page 8 Plant Name -----
Unit No.
Comments e
Modified lube oil on each diesel. Diesels down at different times.
e Diesel cannot be automatically started during test or for three hours afterwards
Ti\\01.F. 3
{Sample)
Diesel Generator Unaclrnduled Downtime Record Calendar Year 19
. ErJialosure 1 -
Page 9 Pl~t Nnme XXX Uni't No.
11,2 '**.
LEll hhstrnct ijc, Downtime llours (Ile fer to uttcl Total Trouble- ~*orts,Del - llcpnit/
cd Lim Abstract s) 11 ours shoot11\\g lvery 1etc lcplnce 1
1 1
2 2
]
0.5 1
1.5
)
.12 1
10 1
4
,0.
0 o*
0 5
0 0
0 0
6
- 0.
0 0
0 7
0 0
0 0
8 0
0 0
0 No I.Im 9
0 0
0 0
10 0
0 0
0 Gonuncnte - It any ot the reported failures would not have been a follure under emeriency conditions, pleoee explnln l1erc.
Jefer to attached. LER~ or the failures listed in Tahle 1.
Diesel started in 15 sec inete~d of required 10 eec e
Secon<lary_ air preaaure low.
Primary air satisfactory.
Secondary air pressure lo~.
Primary air satisfactory, D!esel started in 20 sec instead of ~equire~ JO sec.
False ~G start signal.
DG satiefactqry Required DG starts after the failure of one* diesel.
Starts to verify repairs.
e
TABLE 4 (Sample)
Equipment or
- proc!_!dure modified Lube oil system Relay cabinets Instrument Relocation Date of Mod.
2/76 1/78 6/79 Onsite Emergency Dies~l Generat~r and Auxiliary Equipment Mo~ificati6n Record - Page 10 Plant Name Unit No. -----
Reason for Modification and Desired Improvement Improve turb*o charger lubrication for emergency starts.
Prevent dirt from fouling relay contacts.
Elimin~te vibration damage.to instruments Description of Modification Soak-~ack pump ~as removed and replaced with a continuous.lube oil pump.
New pump also continuously lubricates the crankshaft.
Cabinet doors ~1th gasket~ were installed.
Cbntrol and monitoring instrument panel was relocated from the engine skids to a free standing panel mounted on the engine room floor. *
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~~-LM~R~ Gt~t~AlOR ~YS
~ CU~l~GLS 33/5/000000l-OCUu~l5//
ACCESSION NO.
00Z0155316 4
TITLE l)IcS~L Ci.NEki,TOR Th.lPS Ut~ HIGH CkANK.CASE PRES~L:i<t AT Nc.rnH AM,.;,;
CORPAUTH DATE TYPE MEMO AVAIL A5STRACT COMPONENT CODE SYSTEM CODE 1
VIRGINIA :::.L~CTRIC & ~UW~R CO.
I 960 u
LTR W/Lf:.f..: eG-021 l[) u.ti. NRC, RcGlOt,.c., f[.o 2::.,
lS.'-iO,
- ..ocKET S0-33~. lYPE-PwR. ~FG--w~ST, AE--~~~
AVAlLAblL!TY -
NRC PU6LlC DOCU~ENT ~80M, 1717 H ~TR~ET, WA!>HH-;GlfJN,
[;. C.
- 0:0:):;t, Cuc C:::.NTS/s:>A-:,C:: -
r-*,]i-Jl11U,., CHAR(,E S-.2.00)
DATE UF ~vENl -
0::0:0~~o.
PDW~k L~VEL -
06%.
CAUSE
~OT YET KNO~N.
WllH lHE UNIT IN ~ODE 1, EMERGENCY Dl~SEL Gt.~C~ATC~
lH TRIPPci..> ON t-llGH CRANl~LASt. f-'RtSSUi-<E uUi-<.lNG A !*IA~lJ,;L STAh.T TO VERIFY [JI~t>E:.L OPE:::RA.t3ILITY.
REOUI-JU;..Nl DE.:SEL GENE:.,~ATOR ll.:'
\\'iAS
'.:>lARTt.D ANu v::Rlrlt:.D OPERJ,bU::. \\ollTHlr-.
lht=. HOU,/ AM) AGAih, EVERY 6 HOURS THEk2AFTER.
THC CAUSE CF THE HIGH CRANKCASE PRESSURE DIES~L T~IP IS NOT K~O~N Al THIS TIME.
THE C~ANKCA~E PkESSURE S~lTCrl hAS EXAMINED AND '.:>WITCH ACTION WAS FOU~D TLl
~~ ~ITHIN TOLERANCE.
~30UT 4~ HOUkS LAT~k. THE lH Gl~StL G~N~RAlG~ ~AS SATISFACTU~lLY ~~STARTCD AND U~CLAREU DP~RA3LE ~FT~R SATISFYING ALL SUHVEILLANCE REOUIRt.M~NTS.
THE V~N~UR HAS GLtN CONTACTED AN'u FURThC:R l!-JVESTlGAl 101\\i OF lr-:E Ph.JE.;LEiv:
I!:> l:C:li-Jl, CDHDUCH... D.
E.NG lf'..1:::-i:::.i'~Gl l\\:cS, I NlE kNAL CLJr,,c,U'.:>T lUN ct-EMERG Gch..:.RATOR SYS [, (.(1Nlh.uLS 33/5/0000001-000001~//
5 ACCESSION NO.
oozo1~20:::2 TlTLE COOLING,'t'ATCh'. Lil\\!E.
TU LJIE.SEL !.,u~*:::h:bAR<.:.ER Lt.AK!:>
Al t-,;ORTH J:.NNA CORPAUTH VlkGlN1A tLEC.T~lL & PQ~L~ CC., klCH~O~D. VA DATE 1979 TYP~
Q Ml::MO 2 PGS, L-,;:.:
Y,/LE.R 79-0G4/u.JL-0 TO NkC iJFFICE:. c,i---
l t *.::.,
R!::(,lur, II, JUNE 1, 1s;7s;, DUCi,cT ::,c,-.::,.::ic, TYfJC---P*w;...:, ~.f"(,--\\.c.~1.,
AE--STONL &
~EGSTER AVAIL AVAlLAt.lLlTY -
NRC PU0LlC DOCC~ENT KOUM, 1711 H ~TkEET,
'ilA!>HH.l:,.IL/~~,
- . C.
20~:..-.::,
(G,:, CENT!:,/F-,4(;;:: --
- d1'
- ll*,lJI-/. CHA;_t:,E
- .:2. Ou)
AbSTRACT DATE: UF t:Vc.NT 050~79.
Puv1E.1< L::..Vt.L -
uc,~f~~-
CAU~E LCCSE TliktAuE::D cu~:i....::::CTION.
A 2/4 1NCt-1 CCDLlNL, hJ:..Tt:i-< Ll"'c Tu lhE SUi->Ef-.1.LHAl,GtRS ON THE..
li--1 Ld[St.L [A:.Vt.LUi'i::U
/.,.
L:.hK. /,TA THi-![hDE:D cc,;-.1~...:i...C.TllJ:S.: f--<L(1UIR1NC, "IHE lH ulE...~tL 10 i:1[::.
l*t:CLAr<:::u 11,0P::f-...Ab.;Lt:.
C[.;NSEl.'Uc/*.;lES ':,Tr<E Ll/-',IlcO DUE: 10 THE AVt-.]LhblLI iY Clt'-
UfF SilE POWER At--.[; Tht lJ C.,lt:..SLL Gt:.Nt:FshlC'R.
TriU-.:E.
A~!.:.
- L-Gt...l~~RIC Jt,1,PLICAT!C.1NS.
THc.. CAUSE COUL[, 1',;LJT c.t ?kE.Ci.SLLY [;::.Tc.;...:r,;Jl';:::.D.
IT IS ~ELT THAT THE LEAKAGE WAS ~UE T~ I~C8MPLE12 CLt.~NlNG OF THk::AuS Ar.D lr-JSUFf-1(.}~NT 10R0Ll/\\.G CF lhi..: crn~~-cCllON AT lHt. Tl-1E OF l~JSl ALLAl lON.
f'<t.PAlR PF.;QCU."*UKt::.
\\>1t.::,:
REMr,VE::L, r-'lPt: t cu::M*l=D Th~[A(J!:,, Pkf::.SSURC: lL.sl:::..D PIPt., uurJ!::[J 11-l~f:..A[J!:, ;..NL, llC-,Hl~i-tL**
COMPONENT CODE PI~CXA-PIµLS,FITTING~
SYSTEM CODE EE-E~t.RG GENtRATOk SYS & CONlkUL~
33/~/0000001-000C015//
6 ACCESSION NO.
D0Z01~26U4 TITLE DIE:.Sf::.L C:..i:::.~;t.F;.ATOR lRlf-'S DUhdN(, A :-:M,UAL !:>TA~T AT i-JuRTH ANt-,A
- ORPAUTH VIRGINIA EL~C.TRIC & PG~Eh C8.
)A TE l s-19 TYPE U
"1EMO LTh:
'h'/Li:t-< 7<:;-12'1 TO u.s. 1\\.RL, ki....GlGr, 2. UCT c.6. l':<,S, !)[1CKE:T
- , L;-j... H**
- l YP:::. -fJ,*/R
- HFC --\\.'EST, ;.,t: --::.-+ **
LUh, 1,-._CJL--02 7 24 7 O.VAIL AVAILAl=-ILlTY NRC 1-"Ut:Ll(. uOC-..:1\\,c:."JT kUur:,.
171-,
H !:>1R£.c.T, WAS~ilt-..GTUN e,.c *.::055~.
(l,,:-
/P.:..C!= --
f.',li,;}:-,u~.,
Cf,Al,C,i.... s.2.uu, O.BSTRt.CT DATE CF EVENl -
G~2L7S.
~LIWt.k Li:::.VEL -
CJLO~. CAU!:,t. -
Al~ lN FUt.L FlLfc::.R.
- ... 11H THE U~lT 1:-.. lv,OuE 4, t::.r".C::.hCtNCY ClE:::.t:L Gc.N::RATDf-<
lH Tf~IPPE..0 DURH,"G A
MAt*:UAL
'.:.IAl-<T lt..., VCRIF-Y CJP!:::,'<:t-.UlLITY.
lHE DlE..SEL G:.."-:::.RATOR 1,.:A~
H-*,;.*,tulAli:.LY k::.STA'-i.T.::U At*.0 ~.ATl~*FACTCJ"ILY
- iPc:.RATE::.u.
H1c DL:.SE.L C.C::~JC:RATC.,ro' li-<.lf-'
l~> SUSl--'i:..i._Tt.Li TC, 1--::.vc ~EEN CP.US=.l.J f:iY Ar.: ACCUlv,ULATlu,-... CJF
,-,lR 1:.,.
THt::. rl.;cL FlLT~.R.
THE.
C.t>L!St:
15 ~:,:.lNG FUh'irlf:.R lNV::.SJJ1.,,:...lC::u TC*
- .J
- :TC..i:<,"',1NE.
Titt.: i-.CTl;..0,-.:S
-.Ji:..LLSSAkY 1[", c.Llr-iI:-..IAlt... Tr--;E.
Pi-<.L*l-:LC.i.,:.
- OMPONENT COD~
FILTC~-FlLTi:.~~
e 33/5/00oouol-uoouul5//
. l,
- .YSlEM CODE 33/5/0000001-000001~//
7
~CCESSION NO.
00LG1~22~3 TITLE DlL~::L GlNC.RAlU:',i f-A;~ CODLING ~,YSlE:Y,-,iJ..Y
- =,E:_
H,SUt-i-IClE:.Nl
..C..l
- ORPAUTH
)ATE rYPE:.
"-EMO
~VAIL
~l::3STRACT
- .OMPONt::NT CODE
- iYSTEM CODE NU..: TH ANl\\,A.
1 Vlk~lNlA EL~CTRIC
~ PUWEk CO.
l':179 Q
LTR w/LEf, 79-1 lu HJ u.s. NRC, r-<t:.GIDN 2, SEP,4, 197':, DOCK~l 50-336, TYPE~PwR, MFG--W~ST, AE--S+w CONl~UL--027078 AVAILABILITY -
NRC ~UcLIL DOCUME~l hOUM, 1711 h STR[ET, WASHINGTUN U.C. 205~~. (02 /PAb2 -- MlNl~UM (HAkG~ ~2.00)
DATE Ot-
~VENT O~lu7~. PG~ER L~VEL -
US2%. CA0S~ -
DESlGN ERROR.
VEPCLl GISCOVER~D THAl AM5I~NT T~~PE:.kAlU~E RANGE~ COULD EXIST WH~~E ThE DESIGN Ct..PAblLlTY OF THE UlE~CL G~NCkATUq FA~
COOLING SYSTEM WOULD bE E:.XCE~DED AN8 COOLING MA, G~
l~SUFFICI~NT.
BECAUSE l~MPER~lURE ~XlRE:.~~S A~~ NOT LIKELY AND THE:. DlESbL &E:.NERATGRS hAVE O~ERATl::.U 5~11SfALlURILY lrlROUGHOUT ThE. SUMMt;::;;,
lHE rAN E,LAD!:.S MAY NOT HAV~ Th;;: PRO?t::;:_ PITCH SETTING TO PR~VIDE TH~ NLCES~A~Y CLlDLlN~ FO~ lHC dlUE RANG~ OF T~MPERATU~ES THAT CAN occu~ ~URING lHt YEA~.
~lSCUSSIONS Wllrl THI:.
Vt:.NDOk A~,E IN PRCGRES~ TO lJtTEF-<.V.livt. R~SOLUTIUNS lU THE LC*OLING PF~Of,LE.M.
HLOWER-EiLL'ri E:_kS CE-1:.1>:1::.R G Gl:.l",!:.R AT Ok SYS f, CONTr<OLS 33/5/0000001-0000015//
s
\\CCESS10N NO.
Ou2Gl51IL2 flTLE DIESEL G~N~k~TOR bAll~RlES NUl
- oRPAUTH
)ATE fYPE
-1EMO
-,,_VAIL
~bSTRACT
- OMPONENT CODE
- >YSTEM CODC ANNA 1
VIRGINIA ELLCTRlC & PCWER CO.
197"1
(,,
LTR W/LE.k 7S--uGb TO U.!'.,.
l\\:f.<C, kCGICJN L~ JUL 2r-,,
1<,7'-J, DLJCKi:::T 5 u-3.::H:>
- 1 Y PE --Pi,,'R.,
rv:f G--l<'E: 5 1
- Ai:--~+ ii' c.u J*d r(U L--0 ;:* t, :, t>t:*
AVA1LA6IL1TY -
~~C PU~LIC UOCUM!:::.NT ~~OM.
1711 H SlREET, WASHINGlCd.....
L;.C..
20:S~S.
(Ge /f--'AGE. --
1:11\\:Jr,;u,,, Crit.hG::. $2.C:O)
DATE OF
~V~NT -
Ub2b79. PUWE~
LE:.V~L OS~~-
c~u~~ -
DEFECTIVE PROCEDURES.
Ci-. JUNE 28, 1S79, lhE.
-f DAY SU.-<VE:. lLLAr~Cl::: OF THE 1::.r-.*:tRGl:::~,CY DltSE.L G~l\\:E.;..;;.\\l(;i-< 8A.lTb;I!:::.~ EXCl:.i:-_!)EC THE SUf-.V~lLLAr--.CE INTCRVAL +~~%.
AME~UMENl 10 LiC~NSE UAT~D 0/l4/7S AUU~D SURVElLLAt-;CE_ Rt:GUlR::_Mt:NT 4.e,.1.1.3.A ll.J l~::.
Ti.:.CII SPC:C.
THI!:
CHANGi:::.
WA'=..
~C:Cc.lVEO AT NORTH AN";A
- ,Tt.l luN [IN b/~c:,/79, EXCf::::[;lNC, THE. FIRST ~likVClLLANCI::. li\\Jlc.h.VAL +25~~.
F->~~1LJL1C r;:.Sl (J.,:=,T-85)
RE:.VISLiJ TC ll\\iCURPClr<hTc.. lH.::c CHANGE:
AhlC-l T:__ST PC-,FU,-U1ELl SAl I Sf AL TOF.Y.
HATTRY-bAlT!:::.hlES & LHAR~!:::.kS
- EL-1::.M~RG GE:.NcRATOk SYS~ CU~TRULS 33/5/0000001-0000015//
~CC.ESSION NO.
- -1 TLE
- uRPAUTH
)ATE fYPE
.\\EMO
,VAIL
~[;STRACT
- OMPONt::.NT CODE
- .Y STEM CODE 0 OL u 1 ::i 1 1 L l Dl~S!:::.L G~NE:.kATOk TRIPS FLi~ NU APPARE~l R~ASCN Al NGkTH A~NA 1 VlR1.:,IhiIA E:LECTRIC. &.PUWEk GJ.
197S-Q LTk W/LEk 7~-0EE TD U.S. NRC, ~~GION 2, AUG Cl, 1S79, DOCKET
'.:>C,-33b, lYPE-fJWR, r-,FG--vn.:.s1, Ai:..--S+w CCJNT'<GL--u2G564 AVAlLAblL11Y -
NRC PU:_:LIL i.JUCUMt.l\\il ROUi*h 171-/ H
'.:>"IRE:.~T.
WASH!NGTUI\\. D.C. 20~~~. lu~ /P~~E --
MINIMUM CHA~~E ~~.UO) uAlE [1f t:VE:..Nl cru:_7s.,.
PU\\l,t:.R Lc:.\\it::.L -
U':-::~ ** (.AUSL -
l~CJT DETi:R,V.lNi__i:.,.
[Jl,k ING ThE Pc.1-<Fui:::1v,A,"CE (JF l -PT-t,2A *
~r-*ERuc:'-.CY D lt.Si.:.L C,:_NCr<ATlJ~
IH HdP}-*[::[J FC.1h.
NO Al-'~'AF-d:_:..;T r..... :A~U;**,.
THC:
1 J ult:~EL AS ~.E.LL AS or=F-Sl rt: P[lw[R v.AS A\\/AILAGLL.
lMl,'.t:..Dl.c.Tc.LY Af-TE.R THE l~CIUl::.NT. UlLScL lH ~kS F<~STARTEU A~U l-Pl-H2~ WAS PCr<t-=U;<r-,Lu v'1 lH NU Pr-<LJliLEMS E1'.CCJU1\\iTE.F<t::D.
- .;.11::.!:.,L_L l J y,;,.s ;..LSD SlAf-nCD TC.
Vb:.: !FY CJPE..KhblLITY.
/\\I~ L 1*1E:.f<G:::I\\.CY
- ,;A1;..;1
- :_~;Ar~c:. Kc.PORT
- .v A';;, SU t M 1 T T E:. u t, 'J [J
[J I E Sc. L
(;,, l: N i:. i-1 A l UR l H
~ l /, k T E C b H Cl l.. f'.: S L ;.. l E:. n:
/, :,; L, AGAIN.24 HOL',.,:::.
Af-lEf< lrlAf. bOltl l!Mt:S v;1*1H NO ~'f.<U:-oLE/;,.
ENG I N [ -
~,,~ L, I ~; t.S
- l r,n :::. I<~- J1 L
(.l d-',:j us l IO f...;
C:E.-E:r*:l.kG GE"1l.:--<.4T0k
~Y'...,
f, CUNTl,DLS
e 33/~/C000001-U000ul~//
1 l>
ACCESSION NO*
TITLE CDRPAUTH DATE TYPE
,-IE.MO AVAIL ABSTRACT COMPONENT CODE SYSTEM CODE 002014<:,:,24 TL/,,r-':lf,ARY IRL.i~~ SRAC:..!:, Lt:..rT
[)f\\ UC. CL:...iLl!JG FA~.J ::xr.'\\UST JUCl
.Al N LJF< l H A Ni,' A l
VIRGl~IA t_Lt.LTKIC
~ PCwt.k CU.
1Y79 u
LlR W/LEF< 7S--Ob2 TO U.S. h,RC, h'.tGION 2 *
.V.AY 1-1. 1.:..-1.,,..
DOC..ra_T t:.0-:;3[.,
TYPE.-PWR, t,.FG--~;t:~T, Ai:.--5+V, LUf-..1 :-..:LL--0,::.c~>l>
AVAILAblLlTY -
NRC 1--'UbLlC GCJCLJlv.i:NT 1-<uGI-',
1117 H ~lr<E:::T,
\\\\IASHINGTUI-J c,.c& <:.05~~.
(06 /P.AC,E --
Mli'IU.*,u,-.., C~lAF:Gt. !l-2.00)
DATE 0~ EVENI C50379. POWE~ Ll::':VEL -
09':1~. ChUS~ -
CONSTRUCTIO~ ERROR.
TEMPURARY IRON CO~NER ~RACES ~ERE DISC.OVE.KLD c.,,-.. lHE EXl-iAU!:>l UUCTll',.G OF THE DIESE.L GENEKAlOt...:
COOLING FAN~.
THE.SE oRAC::S Wt-RE TACi<.
i;EL[,c:_u ON Thl:. 1...HM;,',.:E.L STECL TO AIG lN FAdRICATlON OF THE DUCTING.
CGN~~~UENCES ~ERE LIMITED SlNCt THES~
TACK ~ELDS W~RE I~!:>PECl~G A~J FOU~0 10 BE SECU~E.
BRACes WERE MISTAKENLY LEFT 1~ PLACE AFTCR CO~PLETlUN OF DUCTING FAdklCATION.
ANGLt IRON BRACES ~fRE Rc:_MOVED.
B LOWE R -8 LOW c. RS EE-LMERG GEN~~AlOR ~YS & C.ONlhOLS 33/5/0000001-000U015//
1 1 ACCESSION NO.
OOZ014740~
TITLE.
DIE:.SEL Gc.NERJ!.TOK FAILS TO REALH SPEL[)
lr'-. "EUUIR[r, Tlr-*.E AT NCRTH
- ORPAUTH
)ATE TYPE
- c.;:.1PONENT COOE
- .YSTEM CODE ANNA 1
VIRGI~IA. ELE~TklC & POWER CO.
1979 Q
LTR W/LE~ 79-019 10 U.S. NRC. ~E:GION 2. ~A4 OS, l07S, DGCKEl 50-33B, TYP~~PwR, MFG--~E.ST, ~E--s+~
C~Nlh.UL--025303 AVAlLAt:ilLlTY -
NRC i-'Uf:3LIC DOCUlv,£..NT h:uUf1,, 1717 ri STh:Ef:.T.
'o\\'ASHINGTUN D.C. 205t:.::>,
((Jb /PAGL --
Mlr~I-"1UI*', Ct-.Ah-G::c 52.0G)
DATE UF CVE~l -
02lb7S. ~UWER L~V~L -
CS7%. CAGSi::.
N~l DETERl.';INE:.D.
wHIU::. PERFO~i~ING SlJ:-:./VE:ILL/\\NC.E RE..;UI,s!::MchlT Of-T.~.
3.6.1.1, tM~RGENCY DIESCL GENERATUR lH DI~ NOl LU~~ U? T0 900 Rf-->M IN lhE.. f-;:i:_QUIREI.J 10 Sc::.C.
TH!::
Ph.QCE.L*Ur<C: F<.:.v:Jlf.:.:i..._s fHAT GClTl--1 DIESEL G2f~t:~.O.TO~S 8::. ;JPc,--iAoU::.
A PLAUSI:*.LE Lf,USi::.
i*lAY HAVt: St::EN LOW AMdl~NT AIR TE.M~ERATUk[ ALlHQUGH SUF~IClt~T 0KTA
~~s ~nT TAKEN TO CUt,FI~M THIS.
lhE (o!:..h,r_i--<Alllr<
\\\\A:J lM/,:,'-J)lAli::LY Ri:STA~TC:[;
AND 11 k~hCHcD YOO
~PM 1~ 6.5 ~tC.
TH~ CON~lllU~S Al TH~ Tl~~
OF ~IRST STAhT ~cRE NOT RtP~ODULA~LE.
ENGIN~-ENGlN~S,INlER~AL CG~dUSTlON E.t.-!::.MtRG GE:1,=.KATOR SYS & COl-.Tr',:GL5 33/~/0000001-0000015//
1 2.
~CCESS10N NO.
00Z01473~b rITLE DG f.',UFFLL.:S:S NJT SEI5M1CALLY SUPr*JRl Uk ;JJlS'...,lLL 1.:,;...._]1::_(.ll:::D Al
- ORPAUTH
)ATE rYPE
-ltMO
~VAIL
~bSTRACT
- oMPONENT C.ODE
- >Y STE: M CODE NOR TH ANNA l
VIRGINIA EL~CTRIC &
POWER CO.
1979 a
LTR W/Lt.R 7'-;,-0l>=> llJ u.s. ~,~c. ht:GION ~. rt:r.., 12. 1S7S,,X)C,El 50-3~b, TYPt.~Pw~, MFG--wtST, AC--~+~
CO~r~OL--025:52 AVAILAciILITY -
NRC PuGLIC DGCUMt.NT kGO~~
1711 H Sl~EET, wASHINGTON D.C. 2055~, (Ob /PAGE --
f-',li"l,/,Ur-11 Ct-,ARGl:::. ;i,Z,.00)
DAli:: CF ~VENl -
Ul2S7~. P~WER LCVi::L -
coo~.
c~u~~ -
Ui::SlG~
ERROR.
lT \\i,AS D£.TE.i-s:M1NEJ THAl TrlE rl,uf-'FL.::RS FC,:::::
TrlE :-:_r,*,Ers:Gt.t~CY DIESEL Gc.NEkATQRS AKE !',.Of '.:>EL:.. M1CALLY S:.JfJ~:Jr<T~tJ 1-,;[K 1,,1ss1LE:
PROT~ClCJ AS ~EQUIREUo FhlLUkE OF THE ~U~FLt.R LLIULG POSS1~LY Rt.STRICT THt. FLOW Of t.XHAUST fh:UH Ai.:
Cir'c.~ATING L,l:::.Sl::.L.
Tt!E CAU~E WA~ FAILU~C lu !:>ElS~lChLLY SUPµOkT Li~ MISSIL~ PROTtCT ThE DlES~L E.XHAU~T MUFFLikS GURlNG CON~ThUCTlON.
Th:
Ir-.~~D1A1E Cui-<.REC..TlV!:.,C..CTJON WA~ THI:':
F.£::1",UVhL
(_;F lhi::.,.*,urFLU~::.
t:l\\:Gli.JffF-U~G R~VIC:l.,S AkE.
- --,2.J;-...ze, UNDE.RTAr<.E.N lu DETi::.1--U:,Jt-.l~
THE.
i-11\\:AL CC*F-.:rd::CTIV:::.
ACT l Ot-**
ENG 1 NE-::: :*,GI r..;cS
~,Y!:,
[,.
C.ONlh.ULS 33/5/0000001-UGOGOl~//
1~
~CCE5510N NO.
00L01L73~c rITLE FIELD FAILUF-..:C:. TRIP CF DIE.~EL t,GT LiYP.C..~St.i.J FCIR E=,*1.c:;::Gt.:.... cy DP~RATlON Al NO~TH k~~A I
- ORPAUTH VIRGH~l.£.. E:Lc:CTRIC [,
f-->CJw;::.1-i CU.*,.,:ICh/*1..Jt-i[J, V.~
)ATE 1977
e 33/5/@000001-00G001~//
l 3
µ :. c, C:
- -. l 0 TYPE u
MEMO l r'0, Ll" TO r..;~c [lrf-iC.L [,FI I~
t-.* ;.;::::Glut, II, ~..JL.Y le.',
lS'-77, DOCK::. l
~c;-3:*,B, l YPE--PV.k, MFC--wc.Sl.,
AC:.--'.:>TCJl';c_
L.
\\,,[hST'::F<
AVAIL AV.tdLAblLITY -
NRC PU8LIC DOCU,,,[.NT F<.,Ju/,,,
111*1 H SlRli:..T, WASHINGTON,
[;. C.
2.0t.4:::.
(Go C.ENT!:,/?J.C:,t. --
iiill..:l/.'.U~1 ChA.f..GE:..
!f.2.00)
At:3STRACT D Al E:.
(,F EVENT -
Ob(; 077.
PC*'l.*i::.r-<
U:: VC:::L N,;
- c~u '.',t.
D~S I GN Dl:fICIE:.NC.Y.
IN Oh:DC.Fi. Tu CCJ"'1PLY 11-.llH kf:::.(.,ULAT[l;...Y /.Jf)~l*r1c,1, c.z:.
THE DE~I~N QF THE C.D~lRDL Ll~CU!TRY FD~ lHE:. c:~i:..~~LNC)
LlE:.S~L Gt:..1'-~t<ATDKS HAO 10 !:H::..:E:.v1St::D FRL.li*~
THr_ C;Fi.lGit*:Ai_ f;Y LlCt.r.;:C,!::.0 DE~IGN.
ALTHOUGH ChANGE~ HAL, bi::E:.N r.*,,..[Jl.,
A 1-..E:.Vlt:1\\ Or TH!:.
CONTROL ClkCUlT kEVi:..ALE:.U lHAT THE Fl~LD FAILURE TRIP WAS NCT BYPASSED DURING AN E~~RG~NCY OPC~AlIO~.
lHE ~YPASS ~AS,;~DED.
THE: Ul ILJTY t-l:::c:LS l~IAT lHl!:,
I!:>
r-.uT A RE:.PDRTAi:ILE. (J(:l.URkct~C~
BtCAUSE TH~ REVISION ~A5 NECE!:>SITATtO LY A CHPNG~ IN ~KC 51AFF POSITION.
COMPONENT CODE ENGIN~-~NGINCS,lNTE~NAL COM8US1ION SYSTEM CODE EE-~MERG GLN~RATOR SYS & CU~l~OLS 33/5/0000001-000UOIS//
14 ACCESSION NO.
TITLE CORPAUTH DATE TYPE M!:.MO AVAIL o\\BSTRACT COMPONENT COUE:
SYSTEM CODE OO:i::0127104 D~SIGN CRROR FOUND IN DitSEL GcN~RATOR CONlROL CI~CUIT AT NORT~
AMcA l
& 2 Vl~GlNIA tLECTRlC & POW~~ CO., RICHMO~D, VA 1977 Q
1 PG, LTR TO NRC OF~lCE OF l
& E, RE:.GION II, JU~~ ~9, 1977P DOCK.ET ~50-::::.38/339, TYPE:--Pwk, MFG--l'Jc~T., AE.--SlONE &
tiEB5TER AVAILA8ILITY -
NRC PUULIC DOCUME:NT ROUM~
1717 h ST~EET, WASHlf'IGTDN, D. C.
20t>4~
(06 CENTS/PAGE --
t-'INll-',UM CHA~GE 5>2.0u>
DATE UF ~VE~T -
052777.
POWER LEVEL -
~M*
CAU!:>E DE~lGN DEFlCl~NCY.
A UE:~IGN E:RkOR
~A~ FOUND IN TH~ LM~RG~NCY DI~S~L G~NLRATOR CONTROL CI~CUll DURING A CIRCUIT ANALYSIS.
5yµA~SING OF THE ~~CESSARY lRIP CIRCUITS ~AS NOl INSURED FLJLLD~ING A RE-~NERCIZAllON 0~ lHE LM~RGtNCY bUS AFTEk AN EMlkGENCY DIESEL STA~T VIA UND~RVOLTAG~ DY THE AUUITIO~ 0~ ~L~Cl~lCAL l~TERLOCKS HH O THE C ul\\i TR OL, C I CR U I TS.
ENGINE-~kGINlS,lNT~RNAL CUMSU~llDN E.E-CMl..f.<G GEl-.~RAl Ok SYS & C.JNlf"<CJLS 33/5/0000001-0000015//
1 5 ACCESSION NO.
OOZU11474~
TITLE TIMING ~~LAYS ON DIE~~L GE~E~ATL~S UE~eClIVE,\\ 1 NUh 1 H
- ORPAUlH
)AlE TYPt::
'.1EMO
'\\VAIL AGSTRACT ANO 2 VIRGINIA ~LECTRIC & PDdER CU ** RlCH~OND. VA 1~7c, Q
1 PG, LTR i,/KPT TO NRC OFt-'ICE OF I
!... L. w,,...y 2c. l'77b, GClCKET~,
t:> 0-33G/.339, TY Pt::. ---P ~/R
- r.; f(,--v,f.. ST.,
A E.--S T Ut k I~
~,t. ::::; STE: R AVAILALlL!TY -
NR~ PUhLIC ODC.~~~NT RGG~.
171? h ~lqEtT, WA!:>rilNGTUN, U. C.
- 2054~
(0d C~NTS/PAGL::
f'*l~~lt,iU/~
Ch~'\\r,;C.E
- i.2.0U)
CAUSE -
~hNUFACTUkEU I~P~OPERLY.
DU~lNG
.C..N aµERAl lONAL ltST 0~
TH.::
t:11:=.RG:....NCY DIE:.St'.L Gt.t*!t.~ATC,~s.
IT... AS FUUN[) TH.C..T sur,:E OF THE llMING Rt.LAYS WER~ NOT O~~KATING Al THE COR~E:.CT 11NE:.
Tht.
01APHKAG/:.~ ON TH:c.~E
!Tc. Pl'J[.U:*,,A-1 lC TYPL J-1~ T lf'.-iE.1:;:~
FOh: DIRECT CLi~RENT O~ERATlUN ~t:.n~ NOT MA~UFAClU~~0 ~RO~~f~LY ANJ ~G0L~ NOT rlULD lHE:. hlh µk~SSU~t:. Nt.CE~SAkY TU µt:.~~11 CO~k~Ll TIMING OF*.::RATIQN.
hLL OF lhc:St:. lirv'*J:,,e, u:,Jll.S J1R'::.
T;J rJt:.,~LPLACEl*.
Tf-ic REPLACZ::..r.t,.__NTS A~!::
UNCJ'.::'-IGGlr,..(, Sr,~P T::.STli'<l, PR1C..1i-! lU 1:-...::,Tt..LLATIQI\\. *
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