ML20009C344
| ML20009C344 | |
| Person / Time | |
|---|---|
| Site: | Yankee Rowe |
| Issue date: | 07/09/1981 |
| From: | Crutchfield D Office of Nuclear Reactor Regulation |
| To: | Kay J YANKEE ATOMIC ELECTRIC CO. |
| Shared Package | |
| ML20009C346 | List: |
| References | |
| REF-GTECI-A-44, REF-GTECI-EL, TASK-A-44, TASK-OR NUDOCS 8107200478 | |
| Download: ML20009C344 (15) | |
Text
GC: Y 4
c, m
l JUL 0 91981 x
?
t%
[]
'9 Docket No.50-029
(
h JUL 16198;u 8[
Mr. James A. Kay Senior Engineer - Licensing Nouu %**, C Yankee Atomic Electric Company E
1671 Worcester Street G/
Framingham, Massachusetts 01701
'b
Dear Mr. Kay:
Subject:
Information Request Regarding Station Blackout, Unresolved Safety Issue A-44, Yankee Rowe The NRC staff is currently addressing Unresolved Safety Issue (USI)
A-44. Station Blac5.out. 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 infomation requests have been fomarded 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 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 of what should be entered. Please note that, clthough 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 there are other reports which have not b2en enclosed. Finally, please find enclosed a copy of the appropriate portions of your response (enclosure JUL y 4 ;gg erricr>
- sun m e) 8107200478 810709 PDR ADOCK 05000029 om)
F PDR
. l....
.l.
NRC FORM 318110 eoi sacu t,24o OFFICIAL RECORD COPY
""-3"
Ch 9
Mr. James A. Kay 3) to our letter 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.
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 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 infomation 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 cmergency power systems, it is requested that your response be provided within 90 days of the receipt of this letter. However, if this schedule is inconsistent trith 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.
Mr. P. Baranowsky has been designated Task ffanager 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 Sincerely, See attached list Original signed by Dennis it. Crutchfield, Chief Operating Reactors Branch #5 Division of Licensing
Enclosures:
As Stated cc: w/ enclosures See next page This request for information was approved by the Office of Management and Budget under clearance number 3150-0067 which expires May 31, 1983.
Coments on burden and duplication may be directed to the Office of Management and Budget, Washington, y, 20503.
PENtrY.B.
.DL;.Q
.Qt:
.k.; M8* 1 DST I
"'c4
.[d].
f,6.
i an.;f b...R C..... o,.
Dt.i..
..l.d
"* 9?/4./81 07/.6 /81,
0?/,/81 y
f/
NRC 7 OR M 318 410/ 80s NRC M 074 0 OFFICIAL RECORD COPY
" " ? " -32n 2
DISTRIBUTION Docket File (s) 50-OA7 (add)s50:
NRC PDR' Local PDR GIB Reading ORB #fReading D. Eisenhut R. Purple R/hMakYG. Lainas -
J. Roe OELD I&E (3)
Branch Chief D 3<</e/ [ <( 2 s Project Manager'~ A>/ 'e> rebn Licensing Assistant't -LAdn e ff ACRS ( M)
~
J. Heltemes P. Norian K. Kniel F. Schroeder T. Murley P. Baranowsky A-44 File iii
l 9
~
Mr. James A. Kay July 9,1981 cc Mr. James E. Tribble, President Yankee Atomic Electric Cogany 25 Research Drive Westwrough, Massachusetts 01581 Greenfield Connunity College 1 College Drive Greenfield, Massachusetts 01301 Chairman Board of Selectmen Town of Rowe Rowe, Massachusetts 01367 Energy Facilities Siting Council 14th Floor One Ashburton Place Boston, Massachusetts 02108 U. S. Environmental Protection Agency Region I Office ATTN: EIS COORDINATOR JFK Federal Building Boston, Massachusetts 02203 Resident Inspector Yankee Rowe Nuclear Power Station c/o U.S. NRC Post Office Box 28 Monroe Bridge, Massachusetts 01350 i
l l
l l
~
)
3 e
l 1
ba m
T g
a r
P eo r
us l R i E.
1 e
aT am.
F ra d
uN o f e s N oh et c
l nt na cai ot nl n i t EPU t a ar. o f t f
ir t e nf ee dR I(
nre uor RFu l
f pi ooa t F nS o
C i eD t r aoh a
rf c t
uea a
DBE D
s f
n o
o t
)
ngW i
t9 enK a1 ci(
r rd er eaC pa P
-sD Oe I
Y r
r or r
e t a e
r ad bf u rn mol ee u
i nl N
a ea F
CC le r
s s
e t
e bf r i
moa D
u t
N S
Co DN de t
l s
u e
a d
T t
e s
h d
d e
1 cn 'q n
T su ar
)
E G
R e
mo se L
D&
R ef up B
,f D
oy A
r o c t
eT T
on e
l o n
f on p
an ay i o S
u g
lf nt i t sn l i oat ct i ec sr a h
A rt ce aer c
as sp epu e
Ct e i S ROD T
DST H(
i f;!
{
i;i i
iIl lt, i
ii
- i ll 1I i!!
I1.
E 1
o Enclorura 1 - Psga 2 TABl.E 2 tiesel Generator Scheduled Downtime Record Plant Name Calendar Year 19_
Unit No.
i Hours of Downtime Reason for Reactor shutdown Reactor not shutdown Comments
{
Downtime guy mir wr m;F DGF DGf DGF DGF DGf DGf I
{
Schedule.J l
Maintenance i
i i
1 t
1 i
I i
i i
l l
}
}
W I
f i
i, J
t i
i l
l Time DC is unavailable for emergency service because of required tests i
a I
j Encle:ure 1 - Pagi 3 i
TABLE 3 Dic el Generator Unscheduled Downtimo Record Plant Name Calendar Year 19 _
Unit No.
i Comments - If any of the reported failures would not have been a LER Abstract Nt Downtime Hours (Refer to attel failure unde'r emergency conditions, please explain here.
.fo r d Trouble-Parts. Del - Repair /
Refer to attached LERs or the f aflures listed in Tahle 1.
j ed LER Abstract s)llours shooting tvery.etc teplace i
l 9
4 I
l 4
l I
- \\
i i
,1.
t i
Encloaurs 1 - Pzgs 4 4
l TABLE 4 Onsite Emergency Diesel Cenerator and Plant Name Auxiliary Equipment Hodification Record Unic No.
}
Equipment or D.a te o f Reason for Hodification and procedure Hod.
Desired Improvement Description of Hodification j
modified 4
?
i b
s a
w
'1 i
1 I
i i
i k
\\
l i
?
i j
l
I' Encloruro 1 - Pcgn 5 TABLE ENTRIES EXPLANATION / CLARIFICATION.
s 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 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 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 th tailures for each category. A failure is counted if the objectives of the test are not achieved. A subsystem f ailure 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 l
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 r.ot have been a problem in an emergency, this should be noted in Table 3.
Percent Loading of DG OKW): Enter the percentage that the diesel is loaded for each category. The centinuous kilowatt rating is considered to be 100%.
Duration of 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 LERs related to the diesel generators. The abstracts are numb,ered 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.
l If the diesel generator is unavailable for emergency service during l
surveillance testing, report that also, i
l l
l
~ -
.iclotura 1 - Pags 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 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: En.ter the number of hours that the diesel generator is unavailable for emergency service. Subdivide these total hours into troubleshooting, parts delivery, and repair or replacement.
Comments: Use this column to comment on the downtime and the failure.
1 If 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 Equ'pment or procedure modified: List in this column the equipment or procedures related to the emergency onsite poser system that have been modified since the reactor became critical.
Dsce 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 modifiestion was made.
Enciscure 1 - Peg 2 7 -
TABLE 1 Ciscci Cenerater Operction3 D:tc Plcxt Name xxx (Sample)
Cr.lendar Year 1976 Unit No.
1&2 i
Reason for DC Number Number Percent Duration of Run Operation, & scheduled DC of of Loading of Before Stop For Identif.eation of Failures Duration of Run No.
Starts Failures DC (KW)
Each DC Failure (Refer to attached LENS or Table 3)
Tech. Spec Req'd Test Monthly Surveillance 1
12 2
100 30 min; O min LER # 1 & 4 (1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />) 2 12 0
100 (1 stort/ test) 3 12 1
100
- O min LER #2 Refueling Outage 1
1 0
100 2
1 0
100 (12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />)
(1 stort/ test) 3 1
1 100 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> LER I 3 Hisc. Tech Spec 1
2 0
100 Table 3 No. 9 Req'd Tests 2
4 0
100 (Start Only) 3 2
0 100 (I start / test)
DC Actual Demand Starts not for Testing SIAS Signal 1
1 0
0 LER # 8 Multiple s* art of 3 DGs (I hour) 7 1
0 0
3 1
0 0
Miscellaneous Tests (Specify Type)
Verify Repairs 1
6 0
l 0 min Table 3 # 10 l
(not full test) 2 4
0 0
(S tart Only) 3 4
0 0
h I
9
.m u
-e.,--.e-y
,w,-
)
I Enclo ura 1 - Pcg2 8 TABLE 2 plant Name (Sample)
Diecel Ceserator Scheduled Downtime Record Unit No.
Calendar Year 19--
1 i
Hours of Downtime Reason for Reactor shutdown Reactor not shutdown Comments Down ime r
]r gf Dgf DGF DCI Dyf Dgf Dgf DGI DGI Scheduled
}
Maintenance J
4 Preventive 24 16 16 l
Maintenance Semi-annual &
Annual 1
Equipment i
Hodification 8
8 8
Modified lube oil on each diesel. Diesels i
down at different times.
I I
i e
l l
I I
l 1
i l
l l
l Time DG is unavailable for emergency service because of required i
tests l
Do'.:n 4 hrs per ' test 8
48 40 48 Diesel cannot be automatically started during test or for three hours afterwards
/
l
i
. - Page 9 TABl.E 3 Diesel Generator Unscheduled Downtime Record Flant Name XV.K j
(Sample)
Calendar Year 19_
Unit No.
1&2 N N
1 I.ER Abstract N<
Downtime llours Comments - If any of the reported failures would not have been a (Refer to attel failure under emergency conditions, please explain here..
l a
ru e-at s. Del - Repaid Refer to attached me or the failures listed 1,n Table 1.
cd LER Abstract s)Ilours shooting tvery.etc teplace 1
1 4
1 1
2
)
2 3
0.5 1
1.5 j
3 12 1
10 1
4 0
0 0
0 Diesel atarted in 15 see 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.
1 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 satisfactqty j
i;o LER i
9 0
0 0
0 Required DC starts after the failure of one diusel.
10 0
0 0
0 Starts to verify repairs.
4 l
h l
i l
I i
i i
l l
i
. - Pega 10 i
TABLE 4 Onsite Emergency Diesel Generator and Plant Name (Sample)
Auxiliary Equipment Hodification Record Unit No.
Equipment or Date of Reason for Modification and procedure Mod.
Desired Improvement Description of Modification modified Lube oil system 2/76 Improve turb'o ch'arger lubrication Soak-back pump was removed and replaced with a for emergency starts.
continuous lube oil pump. New pumo also continuously lubricates the cranksi. aft.
i l
Relay cabinets 1/78 Present dirt from fouling relay Cabinet doors with gaskets were installed.
contacts.
Instrum.eut 6/79 Eliminate vibration damage to Cbutrol and monitoring instrument panel was
, Relocation instruments relocated from the engine skids to a free standing panel mounted on the engine roon j
floor.
1 1
i 1
I t
a v
- l e
76/b/OOOOObl-OOOOJO3//
I PAGE 573 ACLESSION NO.
00Zol43492 Ti1LE UILStL GtNERATOR OVLRHLATS Al YANKLE ROwE CD4PAU1H YANNEL A l ut4 1 0 tLEC1hlC C C.. ROWE, MA DAIC I V/ 7 TYPE O
MEMU 2 PGS. L1H * /4 0 L O-29 / 7 7 -4 2 / 03L 1 NRC OFFICE OF l'G E.
REGION 1.
SEPI. le 19 77. DUCNE1 50-029. T Y PC--P W R, MFG--WEST..
At--SlONE G Atub1LR AVAIL AVAILABILITY - NRC PUBLIC DOCUMEN1 ROOM. 1717 H S1REET,
- ALHING10Ne D.
C.
20Sbb (Ob CENlb/PAGE MINIMUM CHARGE
$2.00)
AuSTRAC1 JA1E OF tVCNI - 060277.
POWER LEVEL 0%.
CAUSE - RADIATOR IU3ES PLUGGLD BY LLUDGE.
DUhlNG buRVEILLANCE TESTING, NO. 3 DIEbEL GtN. OVERHLAIED AND FAILED TO MEET ITS ACCteTANCE CR11ERIA (bRLAltW THAN OR EUUAL TO 400KW OU1PU1 FOR GREATER 1 FAN 04 LGUAL 10 UNE HOUR).
THE DilbEL DID RUN FOR 30 MIN.
THE YOUNb HAblATOR CO. RADIA1GR F A ILED 10 SUFFICIENTLY COOL THE GENT.R AL Mu l uhb MODEL 7162-7000 D I E SL L DECAUSE 72% OF ITS TUDES
$LCAML HLOCKED bY SLUDGE AND SCALE.
THE R AD I A10R WAS CLEANED.
COMPO N E N1 COLE H1 LECH-ML/.1 LXCHANGLkS SYS TEM CODE LL-LMLRG OENER AT OR SYS 6 CONTROLS 7b/5/0000001-0000003//
2 ACCESblON NO.
00Z0135916 TITLE DIEbdL GE NE R AT OR WA1ER HEA1LR FAILS Al YANKEL ROhE C07PAUTH YANKEL AIUMIL LLECTRIC CO.,
ROWE. MA DATE 197c TYPE O
MLMO 3 PGb, L1P w /R O S O-29 / 7 o -6 / 03L TO NRC OFFICE OF I G C.
REGION 1.
FCb. 17, 1978. 9PCKL1 50-029, 1 YPE --PWR, MFG--WEST.,
AL--SluNL L wdbSTLR AVAIL AVA IL Ab!L11 Y - NRL PUbLIC DOCUMLNT HOOM. 1717 H S1REET.
dASHINC10N.
D.
C.
20545 (06 CLNTb/PAGE -- M ! N i t-iU M CHARGE S2.00) 012E76.
POmER LEVEL
-0%.
CAUSE - END OF abs 1RACT D AT E OF cVLNI LIFT.
uuhlNG AN OPEATOH WALK THROUGH INSPECTION, nA1ER TEMPERATUht ON DILSLL GENERATOR 1 WAS FOUND TO DE BELOW THE M ir41 MUM lbSICATION OF 100 F.
ONE GF THE 2 WATER HEATERb HAD AN UPLN Clh(Ull IN ITS LLECTRIC HEATLR COIL WHICH WAS ATThlBUTED 1G NATURAL END OF LIFL.
THE KIM HOTSTART MODEL 3P3744. 3 PHASE, 440 V UL T. 3760 KWATT HtATEH WAS REPLACCD IN KIND AND TLS1ED AND T Hi DILSEL RETURNED TO LERVICE AF1ER A 5 HR 10 MIN OUIAGE.
COMPONEN1 CODE HL A 1 E R-HL A lt RS,tL LC TR I C SY S T E M CODE EE-EMEh G GE NER AT OR SYS E CONTROLS 76/S/0000001-0000003//
3 ACCES$10N NO.
00Z012'041 TITLE DIESEL
'.L N b R AT OR STARTER MOTOR FAILS AT YANKEE ROwE CORPAUTH YAf4NEL ATOkl0 ELECThlC CO.,
ROhE. MA DATE 1,77 TYPE O
MEMO 2 PGS. L IR */LER 7 7 -11/ 03L 10 NRC OFFICE OF 1 L C. REGION I.
MARLH 31, l 'e 7 7, OOCKET 50-029, 1YPL--PWR. MFG --h E S T., A E--510N E G WLobidk AVAIL AVAILAblL11Y - NRC PUBLIC UDCUMENT ROOM, 1717 H S1HEET, WASHINGION.
b.
C.
20S45 (06 CENib/PAGE MINIMUM CHARGE 12.00) abs TR AC I D AT E OF LVENT - 030177.
POnER LEVEL - 97%.
CAUSE - ARMMATURE SHAFT dkUKE.
DURING NORMAL OPERATION, EMERGENCY DIESEL GENLnATOh ! SIAR1LR MOTOR F AILED UURING A SURVEILLANCE TEST.
1HE ILCHNO-LtCTRIC NUTUR CO. STAR 1ER MOTOR ( $1 -169-0-2 GROUP 3)
ARMMATUhl S H AF T HROKE.
THL STAR 11Nb MOTOR WAS REPLACED WITH A SPARE.
COMPGNENT CODt.
MUTU1A-F.U10mb SYSTEM CODE EL-LMENG bENLRATOh bYb G CON 1ROLS