ML20009F147
| ML20009F147 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 07/20/1981 |
| From: | Ippolito T Office of Nuclear Reactor Regulation |
| To: | Parris H TENNESSEE VALLEY AUTHORITY |
| Shared Package | |
| ML20009F148 | List: |
| References | |
| REF-GTECI-A-44, REF-GTECI-EL, TASK-A-44, TASK-OR NUDOCS 8107290247 | |
| Download: ML20009F147 (16) | |
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Docket l'ot 50-259 JUL 2 0 19 81 r
4 50-260 p
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and 50-296
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,pl Mr. H. G. Parris
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4 Manaqer of Power
% 'A Tennessee Valley Authority 500 Chestaut Tower II Chattanooga,lennessee 37401
Dear Mr. parris:
Subject:
Information Request Regarding Station Blackout, Unresolved Safety Issue A-44, Browns Ferry, Units 1, 2, and 3 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 alterrating current power and, if significant, to consMee the need for any specific changes. Over the past several years information requests have 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-00E-ES-002, NUREG/CR-0660, and NUREC/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 Schefuled 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 of what should be entered.
Please note that, althout," it may appear that only Licensee Event Report (LER) information is sought, data on all diesel generator nalfunctions, indepmdent 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 omer) 9107290247 810720 sewe )
PDR ADOCK 05000259 P
PDR,,
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nnc renu 318 oua nncu em OFFICIAL RECORD COPY um e-amo
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i Mr. H. G. Parris !
- 3) to our letttr of March 6,1978 which requested related, but different, information. This is being forwarded for your information only and should aid in preparing Tables 1 through 4.-
l In consideration of the time and effort necessary to obtain this information,
.the completion of Table 4 should be considered voluntary. However, it should be noted that if operational and hardware mn<tifications are not i
identified, the positive or negative influence of these features on i
emergency alternating current power reliability may be lost in the esaluation cf the data. The expected effect is that our generic reliability estimates may be lower than that which actually exists.
i The above iaTonnation is requested in accordance with Sections _103.b.(3) and.161.c of the Atomic Energy Act of 1954, as amended. To meet our i
schedule requirements for the resolution of USI A-44 and to incorporate as much real experience as possible into the reliability model for i
emergency power systems, it is requested that your response be provided 4
within 120 days of the receipt of this letter. However, if this schedule l
is inconsistent with priority requtrements for other licensing work,
[
please provide us with your oroposad date of response within 30 days.
l 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 j
onsile alternating current power sources can be made.
Mr. P. Baranowsky has been designated Task Manager for USI A-44.
Should t
you have any questions, please feel free to contact him at (301) 443-5921. Your time and efforts are appreciated.
I DISTRIBUTION Docket Files 50,259/260/296 Sincerely, i
4
!NRC & Local-PDRs R. J. C1 ark
' TERA '
S. Norris v
2 GIB Reading ACRS (16) b>jd. i.
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Thoma/ C~s A. Ippolito,k l
' 4 ORB #2 Reading 0 ELD Chief
.l D. Eisenhut I&E(3)
R. Purple J. Roe Operating Reactors Branch f2 i
T. Novak P. Norian Division of Licensing T. Ippolito K. Kniel
Enclosures:
F. Schroeder f
As Stated T. Murley l
P. Baranowsky cc: w/ enclosures J. Butts i
l See next page This request for information was approved by the Office of Management j
and Budget under clearance number 3150-0067 which expires May 31, 1983.
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Comments on burden and dt: plication may be directed to the Office of t
20503.
Managerent ar.d Buoget, L'ashington, Dq.
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om, NRC FORM 318 (10-80)NACMOv.o OFFICIAL RECORD COPY usam msmee i
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Mr. 'Hugh G. Parris cc:
- H. S. Sanger, Jrl, Esquire U'. S. Environmental Protection General Counsel
- Agency Tt onessee Valley Authority Region IV Office 40') Comm.erce Avenue ATTH:
EIS C0ORDINATOR E llB 33C 345 Courtland Street Knoxville, Tennessee 37902
- Atlanth, Georgia 30308 Mr. Ron Rogers Mr.. Robert F. Sullivan Tennessee Valley Authority U. S. Nuclear Regulatory Commission 400 Chestnut Street, Tower II P. O. Box 1863 Chattanooga,. Tennessee 37401 Decatur, Alabama 35602; o
Mr. Ch rles R. Christopher Mr. John F. Cox Chairman, Lir..estone Coun y Commission Tennessee Valley Authority P. O. ~ Box 188 W9-D 207C Athens, Alabama 15611 400 Co6merce Avenue-Knoxville, Tennessee 37902 Ira L. liyerr, M.D.
': Herbert Abercrombie d
State Health Officer State Depart ent of Public Health Tennessee Valley Authority State Office Buildirq P. O. Box 2000 Montgomery, Alabama 36104 Decatur, Alabama 35602 t
Mr. H. N. Culver
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249A HSD 400 Cohmerce Avenue Tennessee Valley Authority Knoxville, iennessee 37902 Athens Public Library j
South and Forrest Athens, Alabama 35611 Director, Office of Urban & Federal Affairs- '
10S Parkway Towers 404 James.Robertson Way i
Nashville, Tennessee 37219 i
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Enclo:uro 1 - Pege 3 TABl.E 3 Diesel Centrator Unscheduled Dowii6tmo Record Plant WIme Calendar Year 19_
Unit No.
4 o
Downtime Hours C m nts - If any f the reported failures would not have been a i.ER Abstract N (Rder to ated allure unde'r emergency conditions, please explatin here...
ed LER Abstracss)T tal Trouble-Parts, Del - Repair /
Refer to attached LERs or the failures listed in Table 1.
Ilours shooting ivery.etc teplace 1
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TAllt.E 4 Onsite Emergency Diesel Generator and l'iant Name Auxillcry Equipment Hodification itecord Unic No.
Equipmant or Date of Reason for Hodification and procedure Hod.
Desired Improvement Description of Hodifiention modified i
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Enclo;ura 1 - Pcge <
TABLE ENTRIES EXPLANATION / CLARIFICATION Tcble 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 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 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 thern 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. x subsystem failure that does not cause failure of the diesel generator system is not counted as a failurs. 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 CKW): Enter the percentage that the diesel is loaded for each category. The continuous kilowatt rating is considered to be 100%.
Duration cf Run Before Stop for each DG Failure: Record the run-time for each failure. If the diesel failed to start, the run-time would be 0 min.
Identification of Failures: Attached to this questionnaire are abstracts of the LEKS related to the diesel generators. The abstracts 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 servf ee.
If the diesel generator is unavailable for emergency service during surveillance testing, report that also.
s Enclosura 1 - Pega 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 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 numbered starting from one.
Refer to this LER number in eslumn one.
Each LER abstract should have an entry in this table.
If there was a failure not included in the attached abstracts, please l,
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 servic2. Subdivide these total hours into troubleshooting, parts delivery, and repair or replacement.
Comments: Use this column to comment on the downtime and the failure.
If the reported failure was only a technical specification violation, but would not be a complete failure of the diesel generator to supply pcwer or would only be a delay, please elaborate in this column.
Table 4 Equipment 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 modifi:ation and tha desired or observed improvement in the system.
Description of Modification: Briefly descifbe what modification was made.
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Diesr1 Canarator Scheduled Downtime R: cord Unit No.
Calendar Year 19
~
Hours of Downtime nts Reason for Reactor shutdown Reactor not shutdown Downtime DCf DC#
[]f IEf DCf Dyf Dgf
]f Scheduled Maintenance Preventive 24 16 16 Maintenance Se=t-annual &
Annual Equipment Modification 8
8 8
Modified lube oil on each diesel. Diesels down at different. times.
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1 i
I Time bG is unavalloble i
for emergency service because of required tests 4
Down 4 his per test 8
48 40 48 Diesel cannot be automatically started during test or for three hours afterwards 1
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Encioaure 1 - P.rg; 9 TADI.E 3 Dicael Generator Unccheduled Downtime Record Plant Name XXX l
(Sample)
Calendar Year 19 Unit No.
162 %,
C mm nts - It any of the reported failures would not have been a I.ER Abstract &
Downtime llours failure under emergency conditions, please explain here.
(Itefer to attel i
a ru ar s.
pa r/
e er a aclic s or tiie failures listed in Table 1.
ed LER Abstract s)Ilours shootisig tvery.etc tepince 1
4 1
1 2
2 3
0.5 1
1.5 3
12 1
10 1
4
.0, 0
0 0
Diesel started in 15 sec instead of required 10 sec 5
0 0
0 0
Secondary air pressure low.
Primary air satisf actory.
6 0
0 0
0 Secondary air pressure low.
Primary air satisfactory.
7 0
0 0
0 Diesel started in 20 sec instead of required 10 sec.
8 0
0 0
0 False DC start signal. DC satisfactqry No I.ER 9
0 0
0 0
Required DC starts alcer the failure of one diesel.
10 0
0 0
0 Starts to verify repairs.
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Enclo2ura 1 - Pzg3 10 TABLE 4 (usite Emergency Diesel Generator and Plant Name (Sample)
Auxiliary Equipment Hodification Record Unit No.
+
Equipment or Date of Reason for Modification and 4
procedure Hod.
Desired Improvement Description of Modification modified Lube oil system 2/76 Improve turb~o charger lubrication Soak-back pump was removed and replaced with a for emergency starts.
continuous lube oil pump.
Kew pump also continuously lubricates the crankshaft.
Relay cabinets 1/78 Prevent dirt from fouling relay Cabinet doors with gaskets were installed.
contacts.
Instrument 6/79 Eliminate vibration damage to Cbntrol and monitoring instrument panel was Relocation instruments relocated from the engine skids to a free standing panel mounted on the engine room floor.
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PALE 82 CO MPO NEN T CODE ME CF UfML C H Afsl C A L FUNClION UNIIL SYSTEM CODE C E-E M ER G GENtd4 A T OR LY S & CONT.OLL 17/S/0000001-0000009//
4 ACCESSION NO.
00Z0146203 TITLE DILSEL FULL. Ull SAMPLES fiO T ANALYZED Al biOWN5 fLRRY I CORPAUTH ILNNESSEE VALLEY At l l HOR i l Y DATE 1979 TYPE O
MEMO LlR w/LtR #9-OG4 10 U.S.
NRC, htGIGN 2,
MAR 16.
1979. DOCK El 50-2b9 I YPE -HW R, t/ F L--C L, AL-I V A CONTh0L--025362 AVAll AVAILAblLiiY - NRL PubLIC DULUMLNi ROOM.
171/ H bIhEEle WASHINGTuN D.C. 20bbb. (Ob / Pact -- MINIMUM CHANGL S2.00)
ADSTRACT DAIE CF EVEN1 - O ?d c 7 9.
POWER LEVLL - 049%. CAULL - LObl IN TRAN51i.
D U R I isG NO R k, AL OPERAIION. REVILW OF SU k V c. ! L L A NC E ILS1 DATA I N D I C A 1 LD THAT t/ 0N i hL Y LAMPLt5 OF UIESLL FULL OlL 1AKtN IN DLCLML,LR 157o HAVE NUI btL N AN ALY ZE') AL RELUIRED bY T.S.
4.9.A.I.E.
lHL DLCLMUEk 19 h DIESEL FULL 5ARPLLS ALME L051 IN IhANSIT
'I U AN OFFbliL L At;UR Al Oh Y WHthL IHtY HAVL 3EEN SLN1 FOR A' tALY S I S.
LFFURTS 10 LOCATE lHE SAf>PLEb WERE UNSUCCEbbFUL.
Saf4P LL S TAALN lHL PSELELDING AND SUCCEEblNG NON1HS WERE SAllbFAClORY.
MEASLRc5 WILL bu TANEN 10 ANAL.YZL 5AMPLES ON b il t 10 AVDlb IHib liPL OF OCCURRENCL.
COMPONENT CODE L NG INE-t NL I Nt.S. I N T E hN AL COMSublION SYSTEM CODE EL-EMtRL LEoLRATUh SY S & CONTROLb 17/6/0000001-0000004//
b ACCES$10N NO.
0020140640 illLE DILbtL GENE R A l (H FitLU hieAKLR 1 RIPS DUL 10 l i t L h.v. A L HEATING AT BROWNL FERRY l COkPAl TH TENNESSEE VALLEY AU3HORIlY. CHAllANDULA, TN DATE 1476 TYPE O
MEMO 2 PLS, ulk W /b E R L -b O-PS9 / /6 22 TO NRC OFFICE UF 1 L E.
REGIGN I1. AUG.
3.
19 76. OLCKET 50-159, 1YPd--Uhn, MFG--Lt.
At -I V A AVAll AVAILAblLITY - NHL PUBLlt DOLONENI hDUM.
171's H LIRLET.
WASHINblON, u.
C.
2Obbb (Uc CLNib/PAGF -- MINIMUM CHARGP ti.OO)
'AUSTRACT 7 All OF LVLN1 - O'sO97o.
POalk LLVLL - 0%.
CAULE - LOUVERS OLNT INIU C O!,L I NG FAN bLAULL.
AHILL UNilt 1 AND 2 WhE IN HUl S I A ND t3 Y. IHL FltLD Lw t A A t w FCH DIESLL GENERAIO4 1C 1RIPPtD DUE TO 1 HER MAL MtA11NL.
1HI$ CAUbED 1 HL D1LSLL GENLN8IOR 1O BE C UtsE INOPtRALLL.
fHE FIELD UndAKLh IHEkPALLY 1 RIPPED AHLN THt CONIROL L A U 1fa_ i OVLhhtATcD DUL 10 A C(luL1f46 eAN ULING INJPEhAELL.
THE PRUILLTIVE LOUVdRS HAD ULEN U t' N 1 INIO lHE i-AN BLADL WHILL n._ NO V I N L LC A FF OLD I N's.
THL LOUVERS LcWE LIRAIGHTENED AND IHL FAN kAN SAllSFACTURY.
OTHLH LCUVERS WLQE ChtCK D AND htPAlkcu.
, COMPONENT CODE ilLOWE R-blLW L 85 SYS1LM CODL LE-LMLHG LLNtMAlOk LY L f,
CUN1HOLS 17/S/0000001-0000009//
o ACCESSION NO.
00Z 012 3104 11TLL ihO HtAl DtILCIUh5 IN F1hl PNbiLCIIUN LYSTEM f A IL AI UnnbNL FhhkY I
'CORPAUTH l t-N Nt b S L L VALLEY AulHORIIV. CHsIIANUGGA. TN DATE 197/
TYPE o
MEMO 2 PL5, LI4 W/dFRG-bO-259/i/0 1O NRC UFFICL UF 1 L L,
hEGION I1.
19 v /. DUCKhl 50-2b9.
T Y P L --i:Wh.
M F L --%. L.. A E --l V A AVAll A VA IL Ab lL I T Y - NRC PU;1ll e DOCUfLN1 ROOM, 1717 ti 31REL1, d A b H : 's G T O N.
L.
C.
2L54b (GU CbNlb/PAGL -- T41fdth,Uf4 CHARGL
$2.001 AbSIRACT D AIL UF L%EN1 - Leib77.
POWhh LLVLL - 90%.
CALLL - Fall TO RESPOND 10 f tL A I.
DLklNG ltbilNG. 2 HEAT DdliCILiKS wHICtf WUULD
]
NOT ALARM WLhh FGUNL IN lite F1RL PROIECIION S Y S l r_ M FOR THL RtC IRC f% St IS.
TH EY WUULD ts u l R E LP U N t) TO HEA1.
THE KibDF j
lYPL S - l o -R L_ TLC 10kb WHICh FAILED wLRL REPLALLD WliH A NLW TYPL DEILCIGh. FENWAL T Y rc.
i/121-0.
j COMPONENT CODE INSilu-INblkUMtNTAllON ANu CONTNULL SYSTEM CODE AH-FIRE PHO I LC llON LYb t,
CONI
17./6/00,00001-0000039//
7 PAGE G3 ACCESSION NO.
00Z0120403 TITLE S I ART CIRCUll OREA<Eh ON DIEbEL uENERAIDR FOUND INOPERAHLE AT UkOWNb '; E R R Y l CORPAUTH l t.N N E b b t. E VALLLY AUIHOR1lY, CliA l'I ANGOG A, IN DATE 1976 1 (PE O
MEMU 2 PGS. Llk w /U F R O -S O-2 69 /7 62 6 10 t4RC OFFICL OF 1 L E,
R E G I C'N I I, DEC. i3, 1976, OLCKET 6 0 -2 b 9.
TYPC--UWR.
MFG--G.L..
AE--1VA AVAIL AVAILABILITY - NRC PUULIC DOCUMLNT R00M, 1?17 H STRtLT, W AbHING T ON,
D.
C.
20b46 (06 CENTb/PAGE -- MINIMUM CHARGE S2.00)
AUSTRACT CAULE - UhllKLN blUD HOLDER ON CONNECiUR.
DURING IEblING WITH T Ht RLAClOh At 40% POWER. UNE LIAhl CIRCull BhEAKER ON DIESEL GENERAlGR O nA b F OU ro INOPERAOLE.
THE SOUARE D CO. 30 ANP BRE AKl:R NO.
12 bV 9 09 FAILLu TO SUsPLY PUWER bLCAUbh UF A U'UAEN blvd HOLDLR (#4 CUNNECiiOte A.
lHE OREAKER #AL RLPLACEO.
17/6/0000001-0000009//
L ACCESSION NO.
00I.0119752 TITLE DILSEL GFNL H A I Cet HA5 LHRAIIC LPEED DEHAVIOR Al BROWNS FEHRY ]
,CORPAUTH TLNNtbbLL VALLLY Aulh0RITY, ChATTANDOLA. IN DATE 197o TYPE O
MEMU 2 PGS. LIR Wh! FRO a0-2b9/7623 10 NRC OFFICL OF i L F,
RLGION 11, NOV. 24.
1970. DOCNL I LO-2bv. l Y P L --u W R,
MFG--G.E.,
A C -- I V A AVAIL AVAILAblLIIY - NRC PUi3L I C DOCUMLNT ROOM. 1717 H LINEEl.
WASHINGION, D.
C.
20b4b (Ob CLNlb/PAGE -- t.lNIMUM CHARob 12.00)
AUSTRACT CAUSE - DIR1Y OIL IN GOVtRNOR ACIUATOR.
DURING ILblING WITH THt RLALTOR AT 30 % POwEh. DILSEL GLNLkATOR D LXHibi1ED LRRAllC bPLED blhAVitM UNDLR LOAD.
ThC APP AR L N1 CAubt MAS DIRTY DIL IN THE WOODWARL GGVL<.NLR MOULL E U -u l G All tJA l GR.
lHL OIL WAS C HA N GL D AND IH L DibblL ILbiLD SATibFACIOW!LY AND RL1URNLD 10 SERVICE.
17/6/0000001-0000004//
9 ACCESSION NO.
00Z0110319 T I T Lt DILSEL L t N L R A T Uit FAILS TU bIANI AI UH O W N:, FERbY l ANL 2 CORPAUTH TENNEbblE V ALL LY AUIh0HITY. ChAITANUDbA. 1N DATE 197c TYPE O
MEMO 2 PGb, LIR b /A US UFAO-Sb-Fb9//61w ANO OFAO-LO-Ebo/7t,2W 10 NRC D IRLC IOR OF MJCLL/sk RE At luR h t cUL. A l l ON, JAN. PS, 1976, DOLNETS 60-2b9/200, l Y Pt- --! w h. M F b --G. L.,
AE--IVA AVAIL AVAILAulLilY - NhC PUHLIC DOCUMLN1 ROOM.
1717 H 51RLL1, WASHINO10N, li.
C.
2Lb4b (Ob LtNib/PAbt -- MININUM CHARGE SP.00)
ABSTRACT CAUSC - HY DR AU L I C A(IUAlbh N A L F UN L l ! U ts.
DUhlNL A IEST, DIEbEL G t-NL R A I L R D 1 AILED IO STAhi.
1Hh HYLRAULIC ALUlAION Dib NOT RLbPONU PwuPtR LY I t) SIGNALS F !iO M IMt L Lt Cl!2 l C GOVtRNOR.
UIL WAS ADDLD TU iHb HYt4AUL1C ALTvAIOR AND ADJUbiMLNIb MADE.
1HE D IL SLL IHhN L1AhTLD LUCCLbbFULLY.
FULL FOR UUlt. UNilh WAS REMOVLO FROM I HE VdbSLL AND b !!)Rt u IN lhL SPENI FUtL POOL Al I H1 L IIML.
1 1