ML20245G733
| ML20245G733 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 04/24/1989 |
| From: | Callan L NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Campbell G ARKANSAS POWER & LIGHT CO. |
| References | |
| NUDOCS 8905030221 | |
| Download: ML20245G733 (50) | |
Text
- _ _ _
c t
APR 241989 t
In Reply Refer To:
Dockets: 50-313/88-38; 44; 02 50-368/88-38; 44; 02 Arkansas Power & Light Company ATTN: Mr. Gene Campbell j
Vice President, Nuclear J
Operations P.O. Box 551 Little Rock, Arkansas 72203 Gentlemen:
This refers to the Management Meeting conducted at Region IV's request in the NRC Region IV office on April 3, 1989. This meeting related to activities i
authorized by NRC License Nos. DPR-51 and NPF-6 for Arkansas Nuclear One and was attended by those listed on the enclosed Attendance List.
The subjects discussed at this meeting are described in the enclosed Meeting j
Suninary.
It is our opinion that this meeting was beneficial and has provided for a better understanding of the issues and findings of three NRC routine inspections conducted October 24 through November 30, 1988, December 5-9, 1988, and January 1-31,.1989 (NRC Inspection Reports 50-313/88-38,.50-368/88-38; 50-313/88-44, 50-368/88-44; and 50-313/89-02, 50-368/89-02, respectively).
In accordance with Section 2.790 of the NRC's " Rules of Practice," Part 2 Title 10, Code of Federal Regulations, a copy of this letter will be placed in the NRC's Public Document Room.
Should you have any questions concerning this matter, we will be pleased to discuss them with you.
Ngblgued By D W t D. C 6 4 eck r h
L. J. Callan, Director Division of Reactor Projects
Enclosures:
1.
Attendance List 2.
Management Meeting Sunmary 3.
Licensee's Presentation cc:
(seenextpage)
RIV:AC:(URP/A f
8 D:DRP
/
ATHowell;df LJCallan 4/u /89 4/2r/89 yQh-pI 8903o30221 s90424 I
{DR ADOCK 05000313 i
PDC L____________-.___
4.
Arkansas Power & Light Company cc:
Arkansas Nuclear One ATTN:
J. M. Levine. Executive Director, Nuclear Operations P.O. Box 608 Russellville, Arkansas 72801 Arkansas Radiation Control Program Director bec to'DMB (IE45) bec distrib. by RIV:
RRI R. D.< Martin,IU\\
RPB-DRSS SectionChief.(DRP/A)
Lisa Shea,-RM/ALF RIY File DRP MIS System.
RSTS Operator Project Engineer (DRP/A)
C. liarbuck, NRR Project Manager (MS:
13-D-18)
DRS C. Poslusny, NRR Project Manager (MS:
13-D-18)'
t
%s t
ATTENDANCE LIST Attendance at the Arkansas Power & Light Company /NRC Management Meeting on April 3, 19898, at the Region IV office was as follows:
Arkansas Power & Light Company J. Levine, Executive Director, Nuclear Operations G. Jones, General Manager, Design Engineering W. Eaton, Manager of Mechanical, Civil, and Structural Design C. Turk, Superintendent, Nuclear Engineering D. James, Licensing Supervisor (LRGO)
D. Lomax, Licensing Supervisor (ANO)
R. Lane, Manager, AND Engineering J. Kowaleski, System Engineer NRC, Region IV L. Callan, Director, Division of Reactor Projects J. Milboan, Director, Division of Reactor Safety D. Chamberlain, Chief Projects Section A, DRP A. Howell, Project Engineer, PSA, DRP W. Johnson, Senior Resident Inspector for ANO, DRP/A W. Seidle, Chief, Test Programs Section, DRS T. Stetka, Chief Plant Systems Section, DRS
- 1. Barnes, Chief, Materials & Quality Programs Section, DRS J. Gagliardo, Chief, Operations Programs Section, DRS NRC, Office of Nuclear Reactor Regulatio_n_ (conference call)
{
l i. O'Connor, Acting Director, Project Directorate IV, NRR l
C. Poslusny, Project Manager for ANO-2, NRR C. Li, Plant System Engineer, Plant Systems Branch, NRR j
4
I i
\\
MANAGEMENT MEETING
SUMMARY
Licensee: Arkansas Power & Light Company Facility: Arkansas Nuclear One License Nos.:
DPR-51 NPF-6 i
Docket Nos.:
50-313 50-368
Subject:
MANAGEMENT MEETING (INSPECTION REPORTS 50-313/88-38,50-368/88-38; 50-313/88-44,50-368/88-44;AND50-313/89-02,50-368/89-02)
On ' April 3,1989, representatives of Arkansas Power. & 4.ight Company met with Region IV personnel in Arlington, Texas, to discuss issues and findings identified using three routine NRC inspections conducted October 24 through November 30, 1988, December 5-9, 1988, and January 1-31, 1989.
The licensee's presentation addressed several issues associated with the Unit I and 2 service water systems, recent exhaust header fires in the Unit 2 "B" emergency diesel generator (EDG), and a violation for late reporting of licensee event reports (LERs) and responses to Notices of Violation. The j
licensee acknowledged problems in all three areas and provided corrective actions to preclude future problems in these areas.
The licensee stated that more information concerning the effects of a postulated single failure of the service water bay sluice gates coincided with the loss of Lake Dardenelle would be forwarded to Region IV at a later date.
A copy of the licensee's presentation is enclosed.
1 L. J. Callan Director Division of Reactor Projects
]
J
l s.
I 9
i NRC / APSL 4
MANAGEMENT MEETING APRIL 3, 1989
'M
~
O As l
i i
l
1 g
j
.b w
i
~
1
+
m U
h a
1 l
SERVICE WATER SYSTEM 1
i I
J i
l l
j 4.
~
SERVICE WATER SYSTEM PRESENTATION 1.
INTRODUCTION BACKGROUND & RECENT HISTORY
~
II.
SYSTEM DESCRIPTION CONFIGURATION DESIGN BASIS 111. SERVICE WdTER INTEGRITY PROGRAM HISTORY OF PROGRAM
SUMMARY
OF IMPROVEMENTS CURRENT PROGRAM OVERVIEW I
i IV.
DISCUSSION OF CURRENT ISSUES I
EMERGENCY COOLING POND LINEUP l
TESTING ~
CONTAINMENT RESPONSE /EQ SLUICE GATE LEAKAGE I
SNAP RINGS V.
FUTURE ACTIVITIES l
INDUSTRY ISSUES SYSTEM IMPROVEMENTS.
I VI.
CONCLUSIONS / CLOSING REMARKS-
1 l
~
INTRODUCTION 1
.c MAJOR OBJECTIVES OF PRESENTATION 1
=
COMPOSITE VIEW OF SYSTEM IN LIGHT
]
OF PERFORMANCE HISTORY, DESIGN 1
BASIS, AND THE SYSTEM INTEGRITY
~
PROGRAM.
{
DETAli S OF OUR APPRdACH. TOWARD h
RESOLUTION OF CURRENT ISSUES.
I DEMONSTRATE THAT OUR APP, ROACH IS COMPLETE ~AND AGGRESSIVE. -
j DEMONSTRATE THAT WE ARE COGNIZANT OF INDUSTRY ISSUES AND ARE ALLOCATING SUFF.lCIENT RESOURCES TO ADDRESS PROBLEMS.
t O
I
~
SERVICE WATER SYSTEM HISTORY MID 1960's ANO-1 SERVICE WATER WAS INITIALLY l
DESIGNED WITH DARDANELLE RESERVOIR AS THE ONLY SOURCE OF WATER.
1969 ADDITION OF THE REQUIREMENT FOR THE EMERGENCY COOLING POND AS AN ALTERNATE SOURCE'GF WATER FOR SHUTDOWN IF THE DARDANELLE RESERVOIR WAS LOST.
.e.
1973 DEVELOPMENT OF REQUIREMENTS THAT THE SERVICE WATER SYSTEM MUST HAVE THE ABILITY TO USE EITHER THE DARDANELLE RESERVOIR OR THE EMERGENCY COOLING POND FOR BOTH NORMAL AND EMERGENCY SHUTDOWN.
1980 DEGRADATION DUE TO SYSTEM FOULING CAUSES AP&L TO RE-EVALUATE THE REQUIRED SYSTEM AND COMPONENT FLOWS.
19 81-THE SERVICE WATER ACTION PLAN WAS 1982 INITIATED.
1984 THE SERVICE WATER INTEGRITY PROGRAM WAS INITIATED.
f1
)!
l f
RE E GS TAnE e
W:AMU t
~
ccL 1
nSF t
CiO 3
R 2
E 8
T 3
(
A 4
v 1
W 2
C D
8 s
3 E3 v
l Eo C
Ts Y2 Cv NC r
A E
G
& 6 R
E S0 F8 M
E2
. E G
i OC 5
l V
1 N
N
,I P
T 8
C W
oL O
3 0
N AO O
v 5
O 3 "
C L
C 8
vC s
S
?
P.
C WI CE S N L
E E
P OP F
F H
T U
P 5
3 1
4 4
il 4
I u
3 "
3 M W
6 6
6 x
3 C
v W*
v I
il C
2
?r C
6 4
f 4
6 6
6 y 3
)
3 3
v V
v v
C C
C C
jt 1
j l
I f
A-il 8
C gW s
2-2 2
W
\\
W S
iIS S
l i '
A i
8 C
t 1
1 W
W W
S I
S S
Y h
CG l
I B
s N
l A
s ND o
6 i 0 o,
D EI 6
i GLN F
F P
7 ROO 1I EOP MC E
lI S
3 I
I P
p l
l i
P p
4 q
p p
)
\\
~
s-
- '~
6 E-K
)
A' Tc N~
S s'
i '-
~2
~
~
~
,l' 11 j
l;{l 11((
l1:J t
L I
O' E A)8 O
c T
E4 TG D.
A G
NRE g'N AM FI RlU EF lliCL i
S T SF P
G I
EI N
RD O
I O
D L
ILS l
l UR 8 A
E2 2
B
'OO" L
C
l C
AER C
a'N i
P '
1h
)
GN R
M ILS c
E N
~
T CL OA
)
)
)
O CP ig E O Y
e T
c AC WB rg rM,
'C DR w
I C
o A
w B
e I
A 8
s 8
8 EE N
F 2
2 s
2 MT w
E E
E A
S RW f/Tl ETN 4Y 8F m%
I 1
a e
1 w
wh P
w S..
MC S
s
}
Y R f
OO RL C O H FS NLTTC W
EEAEX S
GSR KE REEC r
T
'e A
f A A n
A EDN J O
nT ES M E E
R p
E G H oL Q
E os w'
iw tE e
uM t
A N A
2 s
(
X oe O
0 A
3 2
02 v
E I
l c
E I
M 4
8 l
9 S
e.
P S 3
3 R
U R E
E i
ELE E w
L s
KOO AMOO CC YL Q
l SR C
A S
RIM AOO t
F G E D
c C
MEO TL u
u IBR t
i I
s a
NAO v
v R
c c
DEO PU ag 8g u
u LH L
v v
I C
t F
UY 3
3 BAL w
8" A
CV s
4 XE 0
UDO A M ER nn eoE4 T
s t7 A
oto4 o
ER l
p uoE HE tc L
YO A O C C G
A E
n 5
D m
n.
e 3
mn r
nAEA E
w ettO av meob s
e eoE
[
sc
[/
i i'
nu l-P l!lLI!
ll'L lli'(
IA)
L 8
c OE T
E4 TG I
EF
. 'Qe s
G NRE D.
AM EI RHU i '
U CL I
S T SF P
G(
EI O
N RD O
D I
I L
UR ILS I
m%
E B
l CAER
= c e
$s t
e
'~
w OsO" M P G
HwO" OR IN FS'p
)
)
LS i
OE s
CLO TO n
cM
'W i
E AC
,/
p w
W DR
'e I
A 8
C"s m-8 3
8
. s I
EE s
2 2
MT E
E RW A
'[/
E l
T y=
R N
g
_l.
~
I E
=
OS OA CP
_/,
Y Y R WB C O H C
NLTTC EEAEX GSRKE I
REEC I
I s,
T A A P
t EON M E E O
J E G H O
g g:=O II e
e i
(=
2 B
8 0
2 02 I
E l
E I
8 C
l
_l~
9 9
SS l
3 3
c PRR e
E E
U t
E w
E E
L L s
KOO
- l-AMOO
-l CC Y
l t
S RtM a
M gM M c
AOO R
i G E MEO c
TL o
N
" &==
I C
o IAO I
v RBR DEO PU &
m4 LH L
UYL A
- B A
CV XE UDO A M ER
.Ns T
_EE r
AER e
l HE L
YO A O C C 8
E 5
D e
3 r
8 t
2 e
E 8
i w
NM s
3vC oE
~ f_
~
c I.
i w
SERVICE WATER DESIGN BASIS l
ABILITY TO PROVIDE COOLING TO VARIOUS
)
COMPONENTS FOR BOTH NORMAL AND EMERGENCY OPERAT.lON.
E.G. REACTOR l
BUILDING COOLERS, ROOM COOLERS, ETC.
MEETS SINGLE FAILURE CRITERIA BY
~
THE USE OF INDEPENDENT COOLING SUPPLY LOOPS TO REDUNDANT SAFETY EQUIPMENT.
ABILITY TO USE EITHER THE DARDANELLE RESERVOIR OR THE EMERGENCY COOLING POND AS THE ULTIMATE HEAT SINK.
l l
l l
j i
l
1 DESIGN BASIS DNTAILS
^
2 SUPPLY LOOPS TO REDUNDANT ENGINEERED l
SAFEGUARDS EQUIPMENT.
j 1 COMMON RITURN LINE. _.
~
TIE TO EM5RGENCY COOLING POND FOR DBA LINEUP.
l ORIGINAL DESIGN BASIS WAS FdR 2 LOOP e
OPERATION ON LAKE, AND SINGLE LOOP ON EMERGENCY COOLING P0ND.',.
DURING 1973 TIMEFRAME, DESIGN BASIS EVOLVED TO CURRENT: STATUS REQUIRING i
~
2 LOOP OPERATION ON EMERGENCY COOLING POND FOR. OPERATION OF SERVICE WATER
~.
i SYSTEM.
j ORIGINAL DESIGN OFFERS.LITTLE MARGIN i
=
UNDER 2 LOOP OPERATION. MAJOR FACET OF SERVICE WATER INTEGRITY PROGRAM IS UPGRADE OF ORIGINAL DESIGN FEATURES TO MEET CURRENT REQUIREMENTS.
l m
4 BACKGROUND OF IMPROVEMENT EFFORTS DEVELOPMENT OF ' SERVICE WATER ACTION PLAN DURING 1981-82.
IMPLEMENTATION OF SYSTEM. UPGRADES 1980-PRESENT.
INSTRUMENTATION PIPING REPLACEMENTS VALVE REPLACEMENTS DEVELOPMENT OF CORROSION MITIGATION THROUGH CHLORINATION - 1981-82.
ENHANCEMENT OF SERVICE WATER INTEGRITY PROGRAM - 1984.
6 4
- r.
LERVICE WATER PROGRAM HISTORY
- 1973, INITIAL PREOPERATIONAL TEST.
- 1980, BIOFOULING OF HEAT EXCHANGERS; IEB 81-03.
- 1980, ACTION PLAN-RESPONSE TO BIOFOULING.
- 1982, STUDY OF LONG TERM OPTIONS COMPLETED, REPAlR/REPL' ACE 1
PROGRAM CHOSEN.
- 1982, AC'ilON PLAN - SUPPORTING REPAIR /
REPLACE DECISION.
- 1984, SERVICE WATER INTEGRITY PROGRAM FORMALLY ISSUED.
- 1988, FULL TIME SYSTEM ENGINEER.
e a
G
SPECIFIC SERVICE WATER (SW) PROBLEMS ADDRESSED BY SW INTEGRITY PROGRAM CORROSION PRODUCT AND SILT FOULING
=
OF SMALL BORE CARBON STEEL LINES ASSURANCE OF GOOD PERFORMANCE OF 316L STAINLESS STEEL
{
GALVANIC AND GENERAL CORROSION OF VALVES BIOFOULING OF HEAT EXCHANGERS PITTING CORROSION OF HEAT EXCHANGER TUBING GENERAL CORROSION, TUBERCLE GROWTH
=
AND PITTING OF LARGE BORE CARBON STEEL INSPECTION ACCESS, DRAIN DOWN AND MAINTENANCE ISOLATION DIFFICULTIES g
r 9
SERVICE WATER IMPROVEMENTS 1980-1982 E
REPLACE SMALL BORE CARBON STEEL PIPE WITH STAINLESS STEEL.
~
ADD FLOW MEASUREMENT CAPABILITY AT
~
INDIVIDUAL HEAT EXCHANGERS (44 COMPONENTS).
ADD FLANGE PAIRS & ISOLATION VALVES.
REPLACE UNIT 2 SLUICE GATES.
REPLACE BUTTERFLY VALVES. ~
~
REPLACE 2 CONTAINMENT COOLER COILS (UNIT 2).
~
REPLACE UNIT 2 SHUTDOWN HEAT EXCHANGER TUBES.
~
CHEMICALLY CLEAN UNIT 2.
\\
SERVICE WATER IMPROVEMENTS 1983-1988 REPLACE COOLING col' S (44 COILS).
I REPLACE SMALL BORE CARBON STEEL PIPE WITH STAINLESS STEEL.
UPGRADE VALVES FROM CARBON STEEL TO STAINLESS STEEL.
ADDITIONAL VENTS & DRAINS.
MECHANICALLY CLEAN UNIT 1 CARBON STEEL HEADERS.
SANDJET CLEAN & EPOXY COAT UNIT 1 EMERGENCY COOLING POND RETURN LINE.
PROVIDE ADDITIONAL FLOW INSTRUMENTATION.
CONTINUOUS CHLORINATf0N OF SERVICE WATER.
ULTRASONIC THICKNESS MAPPING OF CARBON STEEL _ HEADERS.
l l
)
W
)
i q
SERVICE WATER INTEGRITY PROGRAM OBJECT!VES
)
ENSURE SERVICE WATER CONTINUES TO PERFORM SAFETY RELATED FUNCTIONS.
IMPROVE SNRVICE WATER AVAILABILITY AND RELIABILITY.
~
~
MINIMlZE THE POTENTIAL IMPACT DUE TO FAILURES OR MALFUNCTIONS.-
PROVIDE ADVANCE PLANNING AND BUDGETING FOR SERVICE WATER MAINTENANCE, '
MODIFICATION, TESTING, AND INSPECTION.
~
MAINTAIN INVOLVEMENT IN INDUSTRY. WIDE PROGRAMS AND ISSUES.
l I
1 l
U
SERVICE WATER INTEGRITY PROGRAM PROGRAMMATIC / PREVENTATIVE ACTIONS TESTING
~
l ENGINEERED SAFEGUARDS MODE FLOW 1
TESTS PUMP PERFORMANCE i
PRESSURE DROP / FRICTION COEFFICIENT.
l HEAT TRANSFER PERFORMANCE l
NON-DESTRUCTIVE EXAMINATION INTAKE. STRUCTURE INSPECrlON V SUAL NSPECT ON r
VIDEO INSPECTION OF COATING l
ULTRASONIC THICKNESS MAPPING l
CORROSION MONITORING CORROSION COUPONS FAILURE ANALYSIS SAMPLE ANALYSIS TEST RACK FOR MATERIAL EVALUATION TEST HEAT EXCHANGER CORRECTIVE ACTIONS
=
CLEANING REPLACEMENTS REPAIRS IMPROVEMENTS
~
9
~
~
SERVICE WATER INTEGRITY PROGRAM SHORT TERM ACTIONS 2R7 VALVE UPGRADES MAIN HEADER FLOW ORIFICE STAINLESS STEEL PIPE SAMPLING CORROSION RACK TIE-INS INSPECTIONS THERMAL PERFORMANCE TESTING CONTINGENCY FOR CLEANING 1R9
~
REPLACE LUBE OIL COOLERS-VALVE UPGRADES REACTOR BUILDING COOLER COIL SAMPLING STAINLESS STEEL PIPE SAMPLIAG m
CLEANING OF REACTOR BUILDING COOLING.. COIL SUPPLY AND RETURN HEADERS NON-OUTAGE UNIT 1 HYDRAULIC MODEL CORROSION TEST RACK FORMALIZE PROGRAM WITH SUPPORTING PROCEDURES SPARE PARTS REVIEW NEW COIL SPECIFICATION
~
we--.
~
)
SYSTEM HYDRAULIC STATUS I
i
= UNIT-1 SUM OF ORIGINAL COMPONENT RATED I
FLOWS EQUALS 10,400 GPM
- ANALYZED MINIMU'M REQUIRED FLOWS
~
l ADDED EQUAL 6,497 GPM
- EMERGENCY COOLING POND ~2 LOOP FLOW TEST ON 11/4/88 INDICATED TOTAL
. FLOW EQUALS 9,194 ALL FLOWS EXCEEDED MINIMUM REQUIREMENTS FOR INDIVIDUAL
. COMPONENTS
- TOTAL FLOW OBTAINED EXCEEDS TOTAL MINIMUM REQUIRED FLOWS WIT.H 29% MARGIN ( 9,194 GPM/
6,497 GPM)
- UNIT-2
~
~
SUM OF ORIGINAL COMPONENT RATED l
FLOWS EQUALS 15,858 GPM
- ANALYZED MINIMUM REQUIRED FLOWS ADDED EQUALS 14,370 GPM
- ECP 2 LOOP FLOW TEST ON 4/19/88 INDICATED TOTAL FLOW EQUALS 20,993
- ALL FLOWS EXCEEDED MINIMUM REQUIRE-MENTS FOR INDIVIDUAL COMPONENTS
- TOTAL FLOW OBTAINED EXCEEDS TOTAL MINIMUM REQUIRED FLOWS WITH 46%
MARGIN (20,993 GPM/14,'370 GPM) l l
~
1 l
T r
)
C'ONCLUSION SINCE 1980 AP&L HAS TAKEN AGGRESSIVE STEPS TO ENSURE THE INTEGRITY OF THE-SERVICE WATER SYSTEM AP&L HAS EXPENDED APPROXIMATELY
~
$35 MILLION ON ACTIVITIES ASSOCIATED WITH SERVICE WATER ACTION PLANS AND '
l THE SERVICE. WATER INTEGR1TY PROGRAM l
THE SERVICE WATER SYSTEM IS CAPABLE OF PROVIDING REQUIRED FLOWS TO EACH SAFETY RELATED COMPONENT PROGRAMS ARE IN PLACE TO ENSURE THE CONTINUED INTEGRITY OF THE SERVICE WATER SYSTEM
~
m l
EMERGENCY COOLING POND RETURN LINE TESTING PRIOR TO 1R8 OUTAGE IT WAS DETERMINED THAT A 2 LOOP TEST LINED UP TO EMERGENCY
~
COOLING POND WAS APPROPRIATE.
TEST OF SYSTEM ALIGNMENT TO EMERGENCY COOLING POND DURING 1R8 OUTAGE RESULTED l
lN FAILURE TO MEET 2 LOOP FLOW
~
REQUIREMENTS.
THIS FAILURE WAS REPORTED PER 10CFR50.72 ON NOVEMBER 9,1988 FOLLOWED BY LER ON JANUARY 24,1989.
TEST FAILURE ATTRIBbTED TO CORROSION PRODUCT BUILDUP IN EMERGENCY COOLING POND RETURN LINE.
PROJECT TO CLEAN & COAT RETURN LINE WAS IMPLEMENTED DURING OUTAGE.
RE-TEST WAS SUCCESSFUL.
l e
6
l
)
1 l
1 1
CONTAINMENT RESPONSE /EQ
)
- EQ DESIGN BASIS FOR CONTAINMENT.
I ENVIRONMENTAL CONDITIONS IS DEFINED i
BY APPROVED FSAR CONTAINMENT ANALYSES PER IEB 79-01B
~
q PROFILES WERE REASSESSED FOR IMPACT OF I
DEGRADED SERVICE WATER FLOW IDENTIFIED DURING 1R8:
l REACTOR BUILDING PEAK CONDITIONS.
)
9 LONG TERM COOLDOWN
{.
AS PART OF THOROUGH RE-EXAMINATION OF THE ANALYSIS BASIS, SEVERAL ADDITIONAL CONCERNS WERE IDENTIFIED:
1 IMPROPER MODELING OF REACTOR BUILDING COOLERS LAKE WATER TEMPERATURE NOT BOUNDING IMPROPER NO'. OF ECCS TRAINS MODELED HEAT TRANSFER COEFFICIENT REQUIRED ADJUSTMENT HPI NOT TERMINATED AT RECIRCULATION POINT
~
e-49 h
O
=
CONTAINMENT RESPONSE /EQ (CON'INUED)
- REANALYSIS DEMdNSTRAT$D PEAK CONDITIONS WERE UNAFFECTED a LONG TERM COOLDOW'N OI: REACTOR BUILDING EXTENDED SEVERALTDAYS, THUS REQUIRING EQ REEVALUATIONS, REANALYSES
~
. INITIAL ASSESSMENTS PERFORMED TO JUSTIFY-INTERIM OPERATION BASED ON MAXIMUM 70 F LAKE TEMPERATURE (REPORTED TO NRC)
. AP&L HAS COMPLETED ADDITIONAL _ ANALYSES USING NEW WORST CASE PROFILES WITH 95 F BOUNDING LAKE TEMPERATURES.
ALL AFFECTED EQ' COMPONENTS HAVE BEEN DEMONSTRATED-QUALIFIED e THEREFORE, THE OPERATIONAL RESTRICTION BASED ON LAKE TEMPERATURE CAN BE REMOVED FOR ANO-1
- ANO-2 WAS SIMILARLY REANALYZED (MUCH LESS IMPACT) AND AFFECTED EQUIPMENT DEMONSTRATED QUALIFIED
j
\\
l
~
i SLUICE GATE LEAKAGE _
)
RECENT. INSPECTIONS HAVE SHOWN SLUICE GATE LEAKAGE EXCEEDED SAR ASSUMED VALUE OF 3.0 GPM PER GATE..
THIS EVENT WAS REPORTEb PER 10bFR50.72 ON NOVEMBER 8,1988 AND WAS FOLLOWED BY LER ON FEBRUARY.10,1989.
j CAUSE OF EXCESSIVE LEAKAGE WAS DUE TO 'OUT OF ADJUSTMENT" OF THE GATE.
I SEATING ' SURFACES.
I
~
SERVICE WATER BAY TO DARDANELLE e
RESERVOIR ISOLATION IS PROVIDED.BY 5 SLUICE GATES.
~
(2 ON UNIT 1, & 3 ON UNIT 2)
EMERGENCY COOLING POND INVENTORY IS REQUIRED FOR 30 DAYS POST DBA WITHOUT MAKE-UP.
4 MAXIMUM LEAKAGE OF 15 GPM PER. SLUICE GATE HAS BEEN EVALUATED TO NOT JEOPARDIZE THE FUNCTION OF THE EMERGENCY COOLING POND FOR THE 30 DAY PERIOD FOLLOWING THE DBA.
1 SLUICE GATE SURVEILLANCE EACH OUTAGE.
=
I'lc-ANO-2 SERVICE WATER PUMP SNAP RINGS
~
PUMP IMPELLER SN P RINGS FAILED.
THisFAILURE WAS REPORTED BY LER ON FEBRUARY 24,1989.
CARBON STEEL RINGS FAILED D_UE TO CORROSION.
~~
FAILURE.WAS NOT A. SHORT TER;vi PHENOMENA. _
INCREASED FREQUENCY OF INSPECTIONS ALONG WITH MATERIAL EVALUATION WILL RESOLVE ISSUE.
=
l w
j
. FUTURE ACTIVITIES
['
D~
s j
SERVICE WATER INTEGRITY PROGRAM -
CONSIDERATION OF EVOLVING ISSUES DEVELOPMENT OF. SYSTEM MODEL ADDITION OF NEW DATA FROM INSTRUMENTATION TO AID. BALANCING FULL TIME. SYSTEM ENGINEER ALLdCATION OF ADDITIONAL RESOURCES I
FOR SERVICE WATER CORROSION MODELI.NG & TESTING INDUSTRYISSUES DRAFT OF GENERIC LETTER i
REVIEW OF OTHER UTILITY PROGRAMS INDUSTRY GROUP PARTICIPATION POTENTIAL UPGRADES OR IMPROVEMENTS
)
i j
1 I
l
~~
'~
CONCl USIONS THE SERVICE WATER SYSTEM IS CAPABLE OF PERFORMING BOTH THE NORMAL AND SAFETY RELATED FUNCTIONS.
SYSTEM IMPORTANCE DEMANDS LARGE &
CONSISTENT RESOURCE ALLOCATIONS.
RECORD OF SYSTEM IMPROVEMENTS &
INTEGRITY PLAN PROGRESS' SUPPORTS
~
OUR APPROACH.
OUR INTEGRITY PROGRAM ALREADY ADDRESSES MANY OF THE ISSUES OF THE GENERIC LETTER.
SYSTEM MODELING WILL DIRECT OUR RESOURCE ALLOCATION AND HELP MAXIMlZE THE BENEFITS OF,0UR EXPENDITURES.
CONTINUOUS MONITORING OF PROGRAM IS REQUIRED.
FULL TIME SYSTEM ENGINEER WILL' IMPROVE a
l VISIBILITY OF PROGRAM.
t 1
0 j
l I
+
b i
~
i
~ _
TIMELINESS OF SUBMI TAL OF 4
LICENSEE EVENT REPORiS AND.
VIOLK' ION RESPONSES 1
4 k
TIMELINESS OF SUBMITTAL OF LICENSEE EVENT REPORTS & VIOLATION RESPONSES
- SEVERAL EXAMPLES SUGGEST A PROBLEM IN THESE AREAS AS NOTED IN NRC INSPECTION REPORT 89-02
~
~
l I
- MOST OF THE LATE LERs AND NOV RESPONSES OCCURRED DURING THE LAST QUARTER OF 1988
- EVENTS WHICH SIGNIFICANTLY CONTRIBUTED TO THE PROBLEM:
AT LEAST A TWO-FOLD INCREAS'E IN THE NUMBER OF REPORTABLE' EVENTS FOR THE LAST HALF OF 1988 l
1 I
NUMBER OF LER UPDATES TO BE SUBMITTED (PRIOR VIOLATION'DUE TO NOT ADEQUATELY TRACKING REQUIRED UPDATE REPORTS AS COMMITMENTS)
I TEMPORARY SHORTAGE OF PERSONNEL WITHIN THE PLANT LICENSING SECTION DURING THE LAST HALF OF 1988 t
A
. TIMELINESS OF SUBMITTAL OF LICENSEE ~
EVENT REPORTS & VIOLATION RESPONSES ~
ELEMENTS OF PERSONNEL PERFORMANCE THAT LED TO THE RECENT VIOLATIONS 1
COMMITMENT TO SUBMIT A "OUALITY" DOCUMENT VERSUS MEETING REQUIRED DUE DATES i
FAILURE TO ADEQUATELY TRACK STATUS OF LERs AND NOVs FAILURE TO DISCUSS PROBLEM WITH REGION IV AND REQUEST APPFiOPRIATE DUE DATE EXTENSIONS 1
i
~
ACTION TO PREVENT RECURRENCE
~
i l
l
. REGION IV INFORMED IN DECEMBER 1988.-
AND UPDATED IN MARCH 1989 OF NUMBER l
OF OVERDUE LERs AND SCHEDULE FOR SUBMITTAL.. NO VIOLATION RESPONSES ARE CURRENTLY OVERDUE '..
i
. ADDITIONAL CONTRACTOR ~ STAFF' BROUGHT IN AND FULL PERMANENT LICENSING 4
STAFFING WILL' BE ACHIEVED IN APRIL'
~
~
~
1989... '..
^
- A MECHANISM HAS BEEN DEVELOPED TO
]
KEEP UPPER MANAGEMENT INFORMED ON 1
STATUS OF REPORTABLE EVENTS AND I
]
VIOLATION RESPONSES
~
~
1 l
I
ACTION TO PREVENT RECURRENCE
' CONTINUED
~
. IF CIRCUMSTANCES PRECLUDE TIMELINESS OF RESPONSES TO NOVs, NRC WILL BE INFORMED AND APPROPRIATE EXTENSIONS WILL BE REQUESTED
- UNLESS AN EXTENSION HAS BEEN REQUESTED
~
AND RECEIVED FROM THE REGION, BEST AVAILABLE INFORMATION WILL-BE PROVIDED FOR INITIAL LER SUBMITTAL.WITHIN 30 DAY REPORTING REQUIREMENT. AND
- UPDATES WILL BE PROVIDED WHEN FINAL INFORMATION IS AVAILABLE
- FROM A STATION VIEW POINT WE WILL BE LOOKING AT THE PROCESSES FOR PREPARATION, REVIEW, AND SUPPORT TO ENSURE TIMELY REPORTING OF EVENTS 1
l
I
'.~
3 3
r 5
a 6
03 2 H
M 7
b 1
T e
7 00'S Fn N
6 9
a 036 6
J O
c 1
7 4
9 e
5 '2 1 6 b
v M )9 o
8 2 4 2
4 N
t 5
c 0
8 O
4
~2 1
2 Y
p
'5 9
9 e
1 6 B1 S '3 '2 g
6 u
6 33O 2
A 8
s lu 0
1 0 O 8
R9 J
2 n
u 9
'1 1 0 1
E (1 J
y 3
a 7 03 0 L
1 M
r 5
p 4 03i A
1 O
r 3
a 903 0 M
N b
3 e
6 0 1 2 A
Fn 3
a 30 1 2 J
MVE A
2 0
6 4
0 1
1 se2 1 t
a lad OO t
pNN oTUAA
TN 7
/
E 9
8 8
1 5
S y
1 9
4 1
E
/
/
R) 7 8
4
,8 2 5 9
9 2 2 P 8 1
/
/
/
45 7
7 1
8 9 8 2
9 R
8/
1
/
A 93 j
E Y
2 6
1 2
f
,8 4 8 o
9 1
s p
1 Rs s
/
E (A R
7 5
E 3
,8 5 2 L
9 2 1
/
1 L
fo
/
re b
5 O
4 3
m
,8 9
6 u
9 2
N
/
1 N
2 A
E EE 0 0 0 0 0 0 0 8 7 6 5 4 3 2 de tc2 1
e jOO oNN rP AA
On e
=
M y
9 n**.
1 m
.ma
-o e'
e eM, 9m o
A e
b k,
Y
- ANO-2
~
1
~
EMERGENCY DIES 5L GENERATDR EXHAUST. FIRES l
I l
l l
l I
i l
l j
PRESENTATION OUTLINE l
i l
l
- PROBLEM DESCRIPTION.
i
- PAST EVENTS AND ACTIONS.
- SAFETY SIGNIFICANCE OF CONDITION.
~
- INDUSTRY ASSESSMENT RESULTS.
- ACTION PLAN AND SCHEDULE.
SUMMARY
AND CONCLUSIONS.
d
i 1
PROBLEM DESCRIPTION
.J.
2K-4B EDG FIRES AT TURBO-CHARGER INLET ELBOW.
~
LUBRICATING OIL bARRYOVER AND LEAKAGE
~
OUT GASKET JOINT. _:
IGNITION OF OIL WHEN EXHAUST MANIFOLDS
~
EXCEED 1000 DEGREES F.
a AT NORMAL OPERATING TEMPERATURE JOINTS CLOSE AND SEAL EXHAUST GASES.
\\e 9
m 4-g 1
l l
1 I
I
n Q a s,j w
.,Q
{
HN XA B
4 n Q _M%
K 2
)),.
R O
OV TT t
AR R
E N
t E
GK L
s E
F.
c...
, -o 4
p M.
. wa
.u, lc,,h Mam.Xw.I.X..jw.v, lv,,,a S
a.
l
..,.l
,ll v,u E
llt.
l c
MXw.M.
s I
u,p pa D
l w,, lm,ym
,",Ll u
l m..
l Xua.w.M.l l
.f l
.u m,'l l
u u
- ll Y
H. -
l;
- o.,'ll,,L.
F A v W.. N.hl
,u,u.
4 l
l
,hls.u,hl..,vu,u.
A C
l H.u o.Nw'.L.o.N....l >
l Hfu.. a.y.Ils...yX v,u,L, 4
N l
u.N l.l O
2 t
hv.y'll,u u E
l
.,l l
l l
G Har.
l h o u I.
uuu R
E g
j s
M E
,u R
EG '
R A g H
TCO B
R UT
o3 i
//
l i
I K
, o i
C pB
- B O
4 L
B 4
' -K E
I 2W N
G R O N
O B E
L T
A E RT EE 0'
NL EN s
T G
I s
E R
s K
LE s
s S
EG s
A G
S R s
E s
B A
D s
B DH I
N U
E N
Y C OW O
CO s
E I
L T
NB A
C R
ER NF RT E
I S
GU P
S E
M E
~
PAST EVENTS A_ND ACTIONS
~
- OIL LEAKS IN 2K-4B EXHAUST SYSTEM FIRST IDENTIFIED IN JUNE,1981.
- INTERMITTENT OIL L AKS & FIRES AFTER 1981 LEAD TO VARIOUS MAINTENANCE ~ ACTIVITIES TO TRY TO ELIMINATE OIL LEAKAGE.
I
- RETOROUE EXHAUST MANIFOLD BOLTS SEVERAL
-TIMES SINCE 1981.
]
- EXHAUST EXTENSION MAN! FOLD REPLACED AUGUST,1986.
e RECENT FIRES DOCUMENTED ON 8/8/88,9/8/88 AND 1/31/89 DURING MONTHLY SURVEILLANCE TESTS.
- MACHINED EXHAUST MANIFOLDS FLAT NOVEMBER 1988.
- REMOVED FIBROUS INSULATIN.G. MATERIAL FROM LEAKING JOINTS AFTER AUGUST,1988 FIRE THUS GREATLY REDUCING SEVERITY OF PROBLEM.
i l
4 PAST EVENTS AND ACTIONS ~
~
(CONTINUED)
- 7. -
j RECENT CORRESPONDENCE WITH FAIRBANKS i
MORSE HAS IDENTIFIED ADDITIONAL ACTI'ONS AND INITIATED AN R&D PROGRAM TO SOLVE i
l THE EXHAUST GASKET. SEATING PROBLEM (JANUARi - MARCH 1989).
~
r
~
~
REPLACED TURBO-CHARGER INLET ELBOW
~
M ARCH,1989.
' ? 'r
. ' ' ~
~
DURING SURVEILLANCE TEST ON MARDH 29 -
THERE WAS N6 EVIDENCE OF _ OIL l_EAKAGE.
OR FIRE.~
2
~
~
.r e
+
4 I
I
^ ~ ^ ' ~ ~ ^ ~ ~ ~ -
~
i
)
~
SAFETY SIGNIFICANCE OF CONDITION l
AT THE PRESENT TIME, WITH THE COMBUSTIBLE MATERIAL LIMITED TO A SMALL AMOUNT OF OIL ON THE METAL SURE ACE, THE PROBLEM IS NOT A 1
SIGNIFICANT SAFEi'Y CONCERN.
i em.,
e e
i
<-, +
..-e*
p INDUSTRY ASSESSMENT RESULTS i
.g _ :.
s OTHER PLANTS ARE EXPERIENCING SIMILAR ~-
~
PROBLEMS.
m, 4
's A INDUSTRY GROUP IS BEING FORMED TO 1
ADDRESS THESE PROBLEMS.'
i J
REMOVAL OF INSULATING MATERIAL ~ FROM' JOINT IS THE PRIMARY ACTION TAKEN TO i
MINIMlZE PROBLEM.
l
~ ~,
INSTALLATION OF AN AIR ROLL' SYSTEM.
HAS BEsN EFFECTIVE IN MIN.lMlZIN.G OIL CARRYOVER TO THE EXHAUST SYSTEM.
i Sh W'
i 1
1
.sm w- -----
l
q s.
~
ACTION PLAN AND SCHEDULE IMPLEMENT AN AIR ROLL SYSTEM -
FALL REFUELING OUTAGE,1989 EVALUATION OF TIME REQUIRbb FOR PRE-LUBE BEFORE ENGINE START -
APRIL,1989 WORK WITH FAIRBANKS MORSE-ON R&D PROGRAM TO DEVELOP IMPROVED PRODUCTS - LATE.1989 q
.~
\\
- =
~
SUMMARY
AND CONC [UbibNS ~
~
~
~
THE PROBL5M OF EDG EXHAUSh FIRES
~
~
~
l REMAINS AN ITEM OF AP&L MANAGEMENT
~
~
CONCERN.
.x.
ACTIONS:TO.DATE HAVE REDUCED THE 4
~
SEVERITY OF-THE PROBLEM.
.m
~
AP&L PLANS ARE TO PURSUE THE EXHAUST l
FIRE PROBLEM UNTIL RESOLUTION.-
RECENT CHANGEOUT OF TURBO-CHARGER INLET ELBOW MAY CORRECT O.UEt PROBLEMS, ~
I HOWEVER INTERACTION WITH.THE VENDOR AND OTHER UTILITIES WILL CONTINUE.
f
- ~
o 1
=
m e
m a
N 4
=
'W
3
,.. ~
SUMMARY
AND CONCLUSIONS
~;
~
THE PROBLEM OF EDG EXHAUST FIRES REMAINS AN ITEM OF AP&L MANAGEMENT
'~
~
~
~
CONCERN. -
.r.
ACTIONS:TO.DATE HAVE REDUCED THE SEVERITY OF THE PROBLEM.
1 AP&L PLANS ARE TO PURSUE HE EXHAUST FIRE PROBLEM UNTIL-RE. SOLUTION.
RECENT CHANGEOUT OF TbRBO-CHARGER INLET ELBOW MAY ' CORRECT OUNI PROBLEMS, ~
HOWEVER INTERACTION WITH.THE VENDOR
)
AND OTHER UTILITIES WILL CONTINUE.
W i
1 0