IR 05000382/1993033
| ML20059L388 | |
| Person / Time | |
|---|---|
| Site: | Waterford  |
| Issue date: | 11/10/1993 |
| From: | Beach A NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Barkhurst R ENTERGY OPERATIONS, INC. |
| References | |
| EA-93-239, NUDOCS 9311170049 | |
| Download: ML20059L388 (54) | |
Text
P gea Sf W UNITED STATES i
%.
NUCLEAR REGULATORY COMMISSION
-
3s i
!
y f,
. j R EGiON IV
.-
' b,
'[
611 RY AN PLAZA C MVE, SOM E 400 p
y
?
AR LtNGTON, T E XAS 76011-8064
.....
-
NOV I 01993-
,
T L
Docket: 50-382 License: NPF-38 j
EA:
93-239
Entergy Operations, Inc.
ATTN: Ross P. Barkhurst, Vice President Operations, Waterford P.O. Box B
,
Killona, Louisiana 70066
Gentlemen:
This refers to the enforcement conference, open to public observation, conducted at NRC's request in the Region IV office on November 3, 1993. This enforcement conference related to two apparent violations identified in NRC Inspection Report 50-382/93-33, dated October 26, 1993, and was attended by those on the attached Attendance List.
The subjects discussed at this meeting are described in the enclosed Meeting Summary.
It is our opinion that this meeting was beneficial and has provided a better understanding of the issues regarding the inoperability Containment Spray Isolation Valve CS-125A. The results of our deliberation on this matter will be fowarded to you by separate correspondence.
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.
Sincer 1,
.-
A. B. Beach, Dir ct i
Division of Reac Pr cts Enclosure:
Meeting Summary w/ attachments
. see next page)
cc w/ enclosure:
(
9311170049 931110 PDR ADOCK 050003B2 G
'b
.
.-
.
.
_
'>-
i
..
,
I
.Entergy Operations,-Inc.
-2
-
j
,
cc w/ enclosure-Entergy Operations, Inc.
ATTN: Harry W. Keiser, Executive Vice President & Chief Operating Officer j
P.O. Box 31995 Jackson, Mississippi 39286-1995
,
!
Entergy Operations, Inc.
.!
ATTN: Jerrold G. Dewease, Vice President Operations Support
.
P.O. Box 31995 Jackson, Mississippi 09286
'
Wise, Carter, Child & Caraway ATTN:
Robert B. McGehee, Esq.
P.O. Box 651
Jackson, Mississippi 39205 Entergy Operations, Inc.
ATTN:
D. F. Packer, General i
Manager Plant Operations P.O. Box B Killona, Louisiana 70066 Entergy Operations, Inc.
ATTN:
L. W. Laughlin
.
Licensing Manager
P.O. Box B Killona, Louisiana 70066
-
Chairman
,
>
Louisiana Public Service Commission One American Place, Suite 1630 j
Baton Rouge, Louisiana 70825-1697 j
,
Entergy Operations, Inc.
ATTN:
R. F. Burski, Director Nuclear Safety P.O. Box B Killona, Louisiana 70066
Hall Bohlinger, Administrator Radiation Protection Division P.O. Box 82135
>
Baton Rouge, Louisiana 70884-2135
.l
.l
i
..
.
.
--
.-
-
,
,
.
_
-l
'
.
I
Entergy-Operations, Inc.
' 3-l
-
!
t Parish President
-!
l St. Charles Parish P.O. Box 302
.;
Hahnville, Louisiana 70057 Mr. William A. Cross-
']
Bethesda Licensing Office.
-
3 Metro Center
.;
'
Suite 610 Bethesda, Maryland 20814 o
- ^
Winston & Strawn:
ATTN: Nicholas S. Reynolds, Esq.
[
1400 L Street, N.W.
!
Washington, D.C.
20005-3502 i
,
'
,
!
I i
'
.
..
I
$
!
,
!
+
)
.
j l
l II
_
_ _ _ _ _ _ _ _
_ _ _ _ _ _ _ _ _
_ _ - _ _ _.
_ _ _
_ _ _.
__ ________
_ ____________ ___
__
ig;h'
I- -
NOV l 01993 Entergy Operations, Inc.
-4-bec to DMB (IE01)
bec distrib. by RIV:
J. L. Milhoan Resident Inspector Section Chief (DRP/D)
Lisa Shea, RM/ALF, MS: MNBB 4503 MIS System DRSS-FIPS RIV File Project Engineer (DRP/D)
.
Section Chief (DRP/TSS)
G. F. Sanborn, E0 W. L. Brown, RC J. Lieberman, OE, MS:7-H-5 (
,/
D:DRP h PE:DRP\\D @ C:DRP\\Dd KMKennedy:w TFSteka k ABBeach )./
11/Q/93 11/S/93 11/l$/93 k
16000:_.
.
---
.
NOV I 0 '1993
.
Entergy Operations, Inc.
-4-
bec to DMB (IE01)
.
bcc distrib. by RIV:
J. L. Milhoan Resident Inspector Section Chief (DRP/D)
Lisa Shea, RM/ALF, MS: MNBB 4503 MIS System DRSS-FIPS
'
RIV File Project Engineer (DRP/D)
Section Chief (DRP/TSS)
G. F. Sanborn, E0 W. L. Brown, RC J. Lieberman, OE, MS:7-H-5
1
8
I
.f hb PE:DRP\\D Vp k C:DRP\\DM D:DRP KMKennedy:ww TFSteka<h4'
ABBeach
/
.,
,
ll/Q/93 11/f3/93 11/l$/93 k
-
i
.
.
,
..-
MEETING SUMMARY
,
Licensee:
Entergy Operations, Inc.
,
Facility:
Waterford Steam Electric Station, Unit 3 License:
.
l Docket:
50-382
-
Subject:
Enforcement Conference regarding Containment Spray Isolation Valves
,
The licensee discussed the sequence of events relative to the inoperability of
Containment Spray Isolation Valve CS-125A, their response to the condition,-
the results of their root cause evaluation and self assessment, corrective
,"
actions, the safety significance of the condition, and their perspective on possible enforcement action.
Attachments:
1.
Attendance List 2.
Licensee Presentation (NRC distribution only)
l
.
I n
b
i I
h t
I
-,
.
-
-.
.
N i
....
ATTENDANCE LIST
.
Attendance at the Enforcement Conference between Entergy Operations, Inc. and
'
i NRC on November 3,1993, in the Region IV Office, Arlington, Texas:
i LICENSEE
,
,
R. Azzarello, Director, Design Engineering
!
.
R. Barkhurst, Vice President, Operations R. Burski, Director, Nuclear Safety
.P. Gropp, System Engineering Supervisor
-
- '
J. Houghtaling, Technical Services Manager j
L. Laughlin, Licensing Manager
.
D. Packer, General Manager, Plant Operations W. Pendergrass, Licensing Shift Supervisor j
D. Vinci, Operations Superintendent N_RC
S. Collins, Director, Division of Reactor Safety (DRS)
'
L. Constable, Chief, Plant Support Section, DRS i
E. Ford, Senior Resident Inspector, Waterford 3
'
J. Gilliland, Public Affairs Officer l
T. Gwynn, Acting Director, Division of Reactor Projects (DRP)
C. Hackney, State Liaison Officer
j K. Kennedy, Project Engineer, DRP
..+
J. Melfi, Resident Inspector, Trojan a
J. Milhoan, Regional Administrator i
G. Sanborn, Enforcement Officer i
L. Smith, Senior Resident Inspector, Arkansas Nuclear One T. Stetka, Chief, Project Section D, DRP C. Thomas, Acting Deputy Director, Division of Reactor Safety (DRS)
-l D. Wigginton, Project Manager, Office of Nuclear Reactor Regulation j
f
.:
e
,
,
$
l 1l (
,
..
.
.
.
p._..
..
L
" C r "'"-
.WATERFORD 3
!l ENTERGY
.
,
Y
I ISOLATION VALVE CS-125
.
o
,
p
).
ll I
1t ENFORCEMENT CONFERENCE
'
NOVEMBER 3,1993 i
[
o
,
,
r
.
.
A rD,
,
n Ulk.
D A i
Pewd'"*e
.KJn ws c
f I.
OPENING RESIARKS ROSS BARKliURST Vice President Operations i
4.:
11.
OVERVIEW OF LARRY LAUGIILIN a
PRESENTATION Licensing Manager Ill.
CONTAINMENT SPRAY DON VINCI SYSTEM DESCRIPTION Operations Superintendent i
.n IV.
CS-125A SEQUENCE OF DON VLNCI EVENTS Operations Superintendent f
PAUL GROPP
System Engineering Supervisor V.
SUMMARY OF TESTING JOlIN llOUGIITALING Technical Services Manager
,
VI.
KEY POINTS DAN PACKER General Manager Plant Operations
'
ROOT CAUSE EVALUATION SELF ASSESSMENT VII.
CORRECTIVE ACTION RAY BURSKI Director, Nuclear Safety VIII.
SAFETY SIGNIFICANCE ROBERT AZZARELLO Diredor, Design Engineering IX.
W3 ENFORCEMENT LARRY LAUGIILIN PERSPECTIVE Licensing Manager X.
CLOSING REMARKS ROSS BARKIIURST
Vice President Operations i
..
.
y L
--
- _ -- - _ - --- ---- - --------- -------- ----- _ --- -- _ - - -
O
-
-
.
.
'
_
_
,
_
ENTERGY r
I l
OPKNING REMARKS
'
l i
I i
/l*
.
l
!
!
j;
!'
!.
ROSS BARKHURST Vice President Operations
.
f_
-
_.....
--
- - -
.-
__
e
.-
t (;..
c ::"I ISSUES p
[c d
t
'
f
CONTAINAENT SPRAY TRAIN A WAS
.
E INOPERABLE IN EXCESS OF THE 72 HOUR ALLOWED OUTAGE TIAE SPECIFIED IN TECH.
SPEC 3.6.2.1
.
FAILURE TO PROMPTLY IDENTIFY AND
-
CORRECT THE INOPERABILITY OF.
CONTAINMENT SPRAY TRAIN A. IN ADDITION, THE-APPROPRIATE LEVEL OF MANAGEMENT
-
ATTENTION WAS NOT DIRECTED AT RESOLVING 7 TIE PROBLEM UNTIL
"
SEPTEMBER 24,1993
.
'
>
ll
_ _ _ - - _ _ - _ _ _ _
.
.
-.
--
.
,
.
.
-
i
!
q
.
._.
_
_
_
!
ENTERGY q
-
i
i'.
F-i
OVERVIEW of PRESENTATION
,
'
l l
,
'
,
.
A
^
r.
i i
.
!
!
,
'
.
.;
.
<
'
l I
'
'
<
I
LARRY LAUGHLIN
,
.
Licensing Manager
4
!
l l
i
.
i i
,
!
i
.
..
...
-
-
- -
.
_
.
_ _
_
_
ENTERGY CONTAINMENT SPRAY SYSTEM DESCRIPTION
.
.
DON VINCI
.
,
Operations Superintendant
l 1{
1lqI I
l 1j
.f
.
1!
l!)
- i>
.
-.
n.
-
-
-
C A
.
A
' g
.
s6
o
.
.
s f
C0
'-
C
.
N9 I
,
s IL N
.
_
P
.
f
.
e M
A
.l s
-
9
NA
,
$ C1
IO(
e
a x
l T.
r
A5
,
q.
e 1j
,
R
$
,
B E.
C E
N I
P l
'O O5
-[
S6
- g l
_2 YD 5g l0 CR s6 RO I Cp EF
TR NE ETA
h W
I
kp
B E
4
_
C
_
O
"
C
-
S
-
3 >
-
A
_B
s
PG O
-
N T
-
3i C
NI B
ct N
_
T
, 6 O
_ 2
_
S
, J CE y1
_
T
_
8'
(
j
_-
g
7
, J
D.
, L
.
9
_
-
p
-
-
A
8
-
_
-
si
-
C
a
-
fs
-
-.
ct
-
)
-
U
. *,
rk v
M
'J m
E A
w T
S C
S T1 1 R
C
-
Y N98 T
_
1 2 S
E1 1 V-
-
c Y
S5 A
-
R E
-
-
P N
.R
.R S
X T
S T
E T
T RI H
EI H
R N
PM A
M B
N
' %gP
,
C C
EM D
N I
O DM
' %C A
T
'
A I
B
'
CP DP C
SU
$
S M P
C U
M uP N^
I
.
OI o
PS R
FP l
S l
F L
P
i L
-
-
Y B
Y Y
f A A
- A MA A
P
_
PU PM 5. P 5. P 5. P 5. P U
M TM TU NU N
NP eT R N
OP NR C
O E OE C
S C
CI CS I
R FR g
r T
F m_
l o
_B B
,6
-
l
_
51 O
[.
_N
_
-
P S
_
w I1 R
_
[.
_
-
ON A
- T
_A
.
,6
O 3i
<
,l(llllIl l
llllllll'
ll
-
.
,
.-
11Jz ELI~
~9
__- ) 1 (, ' - s i 58'-3" 58'-10" p ;,, g x
,
^
Et t - G5 ' -2'-(
-
9 ' ~2L h-
'
Z 17'-1~
e*
.,
60'-8" l50Hi EXCHlAl
$
- *
6 * -o% "-
L, S-I 'l l A
,..
---
EL.t-133'-1,
)
.
L-
" ' ' ' ' ' " '" U
-
.%-
j'_10
,
d'~
O
.
.
. ** '
C S PUMP A
.
w-NEW VENT
.,.
...
h UCW VENT
.,
,
-.
,
m" CS-ti El 1 - 1. b ' - O d
Q EL.t-11A'-0
,
d ' ' ' 21 Y I Q' ~
SI-412A L.(-122*-9" l
29,-0 gx CS-12CA
,
- M 18'-6~l H '- m,' a "
,
EL.t-124'-6-
'
EL. ( - 13 3' -0 d
_
._LL A-132'-6" C5-124A
-
CS-117A CS-125A 17'-9" CONTAINMENT SPRAY TRAIN A N
.
,
... '.*.
EL(+)15'-ths"-no *..,'
.
,
.
- ,....
. '....
- ,*
,
- ',,.
.,.
EL t - 116' -0 T4'-T" 18'-6"
PCS-118B
,
-
ELI-122'-9~
- 5 ' ~0 '
E L ( - 12 5 ' -2 %"
h
,'"'
+4 -
CS-126B 6'-0%
5 8 ' -2 hs "
lso HT ExCHlBl h
Ett-133'-O
- g4 E L t - 132, -6.,
CS-111B s_
(O cst 17B CS-124-CS-125B d'-
37._9-c'-1" C S PUMP B ATTACHMENT 2 CONTAINMENT SPRAY TRAIN B r
l NCI 287455 orva P DD
-'
ENRRC,Y MRAT im. MC.
WATERFORD 5.E.5. UNIT NO.3 cm.
SECTION VIEW m 10-1-93 CONTAINtKNT SPRAY PUWP DISCHARCI, HE M RS AA B
... e..w.
u.... -,, -
- _ _ - _. - _.
- _ _ _ _ _ _ _ _ _ - - _ _ _ _ _. _ _ -. - - -. - - _ _ _ _. - - _ _ _ _ _. -. _ _ - -... _ - -. - - - _ - _ _ _ _ _ - _ - _ _ - _ _ _ _ _. _ _ _ - _ _ _. _ - _ - - _ - - -. _ _ _ _ _ - - - - - -. _. _ _ _ - -
- _ _ _ - -
_ - -
-
-
...
?
!
s
.
._.
.
_-
c t
ENTERGY
'
r
s h
t
.
-
i
CS-125A SEQUENCE OF
'
!.
EVENTS
'
.
.
'
i.
$
$
.
.'
i i
.
-l t
f f
ji
.s i
f g
-
4-
,
.
.
.
i.
DON VINCI i
i
.
Operations Superintendent
'
.
O h
!
i
I 4'
r
.
!
,
- - = -
. -.,
.
.
..
-,
.
E
- f y;*
- m e
yy:?
W e: w %
SEQUENCE OF EVENTS
.
(9/13/93)
"-
'
SURVEILLANCE TEST PERFORMED (9/13/93)
t
.
- ESFAS RELAY TEST OP-903-094
- CS-125A STROKED OPEN
- CS PUMP A RUN NEED TO FILL CS RISER
- CS-125A WOULD NOT OPEN
,
- CS TRAIN A DECLARED INOPERABLE
- SDCHX RECORDER (IN CONTROL ROOM) PRESSURE APPROXIMATE 370 PSIG I
PRESSURE RELEASFsD VIA CS-124A
.
CS-125A SUCCESSFULLY OPENS TWICE
=
-
CS-125A IS DECLARED OPERABLE
.
CONDITION IDENTIFICATION (CI) WRITTEN (9/13/93)
.
'
T4 INDICATES TECH SPEC RELATED WORK
.
- COMPLETION DESIRED WITHIN 7 DAYS
r
.
.
.
AVAILABLE INFORMATION
- =
+-en (9/13/93)
- ~~-
i.
OPERABILITY DETERMINATION:
.!
- {
\\.
i i
SURVEILLANCE TEST PERFORMED THAT NIGIIT WAS j
.
i SATISFACTORY
p
,
i l
PRESSURE ANOMALY EXISTS
.:
i i
..
!
,,
!
- BELIEVED TO BE CAUSED BY TESTING SEQUENCE AND
!
CONDITIONS f
I EQUIPAIENT WILL BE ACTUATED FROh! SEQUENCER l
.
- .
j-.
j l
"ELIEVED THAT CS-125A WILL OPEN BEFORE PUMP l
a utRT.
-
,
l-
!
AIAINTENANCE PERSONNEL INSPECTED VALVE
.
I CS-125A PASSES SUBSEQUENT SURVEILLANCE AND
.
l CONSISTENT WITH PREVIOUS STROKE TIMES -
i
.
'
DUTY PLANT MANAGER CONTACTED AND ABOVE LOGIC
- i
.
REVIEWED
-
.
!
I
!
!
BASED ON THIS INFORMATION VALVE DECLARED
!
.
j.
OPERABLE AND CI WRITTEN FOR ENGINEERING
}
EVALUATION, WITH T4 PRIORITY
.
.
Y A.
<
i
.,,
. _..
.
.
-
.._.
._.
.. - - - -. - -
-
>
..
.
- -
.
.
-
.
.
__
-
~
ENTERGY
g
!
!
!
I 1.
'!
,
l CS-125A SEQUENCE OF
!
EVENTS
,
.
!
i
!
i f
'!
i
i L
PAUL GROPP
System Engineering Supervisor
!
i
_. _..
.
_.
,__._._.---
.
->
'
!
[
.. -
SEQUENCE OF EVENTS
_,
(9/14/93 - 9/17/93)
- ~ ~
-
'
DUTY PLANT MANAGER NOTIFIES SYSTEM ENGINEERING SUPERVISOR AT P.O.D. (9/14/93)
f
CI RECEIVED IN ENGINEERING a
- SYSTEM ENGINEERING SUPERVISOR BRIEFS ENGINEER, PROVIDING INSTRUCTIONS AND EXPECTATIONS
'
- ENGINEERING CONCURS WITIl T4 PRIORITY
- FORMULATED QUESTIONS FOR VENDOR
'
'
- RESEARCIIED SPECIFIC VALVE INFOR51ATION
- REVIEWED TECIINICAL 31ANUAL j
i
- REVIEWED PRESSURE AN051ALY CIIARACTERISTICS
- REVIEWED INTERFACING SYSTENIS FOR PRESSURE SOURCE l
&
.
CONTACTED VENDOR (COOPER OIL TOOLS)
!
!
t
i
- UNUSUAL VALVE DESIGN, VERY LITTLE INFOR51ATION AVAILABLE i
- WK31 VALVE; COOPER OIL TOOLS NOW OWNS RIGIIT TO VALVE i
- VENDOR REQUESTED QUESTIONS TO BE WRITTEN AND FAXED'
l I
- REQUESTED VERIFICATION OF VALVE OPERATION IN RESPONSE
l TO SYSTE31 PRESSURES
]
l
- QUESTIONED PROBABILITY OF COSIPONENT PERFOR51ANCE j
(PACKING, ELASTO51ERS, ETC.)
!
$
- DESCRIBED VALVE RESPONSE TO PRESSURE AN051ALY AND l
j SOLICITED CO5151ENT
-
i
- -
si
,
.
&
k
,
!
i
. _,
_
.
--
_ _,
,
.,
'?
r I 4hD9
j i it I.
-
_te
e
h m
,
.
-
I I
bMN\\
.
d
~
L TVW]L Q"'M &_k i
~a ys9
-
,
,
!
l C
l 7 g
C l 3
'
s n
,,
e
'
C
-- n s
,
'
/
\\
u -
,
,
C
hC 3$
i
-
dC 3$
'
hC as
"1" t
m
.
.
.
Mt,
'.
I r
.
<
.
j(
f EEEE c 15 0lA.
t
->
l -
_
f CP, i
'/
s
,
'
W s
@:,
,
-
-
!
m
-
s s
RELIEF HOLE
'
ss
.
l 12#'
-
/
O
$
.
k W ji W
i lL
,
k
.
-
e
{
b
.
N
i
'
s
/
%80 MUL WALL r
,
~
V
,
O
/
WATERFORD S.C.S. UNil NO. 3
- ENTERGY 1165 MW INSTALLATION
13 } %
VALVE
'l c
SCALE: NONE ND DATE: 10-29-93 EPT.
f
$
OR.
THS l
ca.
i
-
FILEWEd8001432.we
,
.
V I
.
.
.
SEQUENCE OF EVENTS-
'
i e-
'
re.
,
(9/14/93 - 9/17/93)
"
--
!
!
.
SYSTEM ENGINEERING SUPERVISOR RESPONDS TO'
NRC INSPECTION ISSUES
!
.
ENGINEERING RECOMMENDATIONS ISSUED TO'
i
.
OPERATIONS DEPARTMENT y
!
- OPERATIONS IMPLEMENTS STANDING INSTRUCTIONS:
=> DECLARE CS TRAIN OUT OF SERVICF PRIOR TO RUNNING PUMP
.[
=> VERIFY CONTAINMENT SPRAY llEADER PRESSURE IS BLED DOWN AFTER d
PUMP RUNS ENGINEERING AND OPERATIONS CONCLUDED. SYSTEM
.
.
i WOULD BE MAINTAINED OPERABLE WITH j
i-IMPLEMENTATION OF STANDING INSTRUCTIONS-
I
h.
UNANSWERED ENGINEERING QUESTIONS
.
.)
!
l
}
- PRESSURE ANOMALY IS NOT VERIFIABLE -
]
[
- SOLICITED VENDOR INPUT NOT CONCLUSIVE FOR RESOLUTION
'l
!.
- VALVE PERFORMANCE NOT REPRESENTATIVE OF EXPECTATIONS
,
y
.
.
.
.l
[
CONDITION REPORT (CR)93-156, INITIATED 9/17/93
.
!-
c; NRC NOTIFICATION PER 10CFR50.72 (4 HOUR CALL)
'f
[
.
I i
!
k
$'
,
k l-1 i:
'
i'
,
_,
,.
_
. -,.
.
.-
- -
- -
. -..
e
- .
u
.
.
e-e,=
SEQUENCE OF EVENTS
' ~
-
==
(9/18/93 - 9/24/93)
-- -
l
.
!
VENDOR PROVIDES SOLICITED INFORMATION WITH ~
- !
REQUEST FOR FOLLOWING ADDITIONAL i
'
INFORMATION:
r
- IIOW OFTEN IIAS WATERFORD 3 EXPERIENCED TIIE PROBLEM -
WITII VALVE
,
- WlIAT ARE NORMAL OPERATION INTERVALS FOR VALVE-
']
- IIOW FAST DOES LINE PRESSURE BUILD ONCE VALVES CRACK l
OPEN l
,-
-
- WIIEN WERE VALVE OPERATORS LAST DISASSEMBLED,-
.
'
INSPECTED, AND NEW ELASTOMERS INSTALLED
- IIAVE VENDOR FIELD ENGINEERS EVER OBSERVED OR
- l PARTICIPATED IN MAINTENANCE ACTIVITIES FOR TIIE VALVES
_
t CS-125A CAPABILITIES EVALUATED BY ENGINEERING-
.
USING FLOWSCANNER AND DESIGN DATA.
L
ENGINEERING SUSPECTS AIR ENTRAPAENT, AND
.
FORMULATES ISSUES TO BE INVESTIGATED i
'
l i
l l
u
-.
-
.
>
e
-
rmr t-p SPECIFIC ENGINEERING G-OALS
t I
!.j
.
DETERMINE VALVE PERFORMANCE BY REVIEW OF:
j i
- SIAINTENANCE IIISTORY
- SURVEILLANCE IIISTORY
'
- NPRDS
'
- PREVIOUS FLOWSCANNER DIAGNOSTIC DATA
,
'
DETERMINE CAUSES OF PRFsSSURE ANOMALY:
.
>
- IIISTORICAL SYSTE51 PRESSURE DATA
- INITIAL ASSUMPTIONS (PRESSURE TEST AN051ALY)
I
- CAUSE OF IIIGIIER PRESSURES
- DEVELOPMENT OF PRESSURE DIFFERENTIAL ACROSS CS-125A
,
CONSIDER SYSTEM CHARACTERISTICS FOR DESIGN BASIS
.
_;
ACCIDENTS (DBA)
'
- WIIAT IS WORST CASE DBA?
'!
.
- WOULD CS-125A OPEN BEFORE PUMP START?
<.
- WOULD DIFFERENTIAL PRESSURE DEVELOP ACROSS CS-125A I
DLllING DBA?
k-
>
-
!
'l i
!
I
!
.
.
,
z.
- N SEQUENCE OF EVENTS As%
(9/18/93 - 9/24/93)
-
-
.
'
>
.
f
i
.
-;
.
ENGINEERING DRAFFS A SPECIAL TEST PROCEDURE FOR CS
!
TRAIN A WITH THE FOLLOWING GOALS: (9/22/93)
.!
,
- DETERMINE TIIE APPROXIMATE PRESSURE DECAY RATE IN
F CONTAINMENT SPRAY IIEADER 'A' AFTER CONTAINMENT SPRAY
'I
!
PUMP A PRESSURIZES TIIE IIEADER
-- DETERMINE TIIE MAXIMUM PRESSURE AT TIIE INLET TO CS-125A l
AND AT TIIE INLET TO TIIE SIIUTDOWN COOLING IIEAT I
EXCIIANGER WIIEN CONTAINMENT SPRAY PUMP A STARTS
.;
!
!
- DETERMINE TIIE STABILIZED PRESSURE AT TIIE PUMP DISCIIARGE, TIIE INLET TO THE SDCIIX, AND TIIE VALVE CS-125A WIIILE CONTAINMENT SPRAY PUMP A IS RUNNING
!
- DETERMINE TIIE TIME DELAY BETWEEN CONTAINMENT SPRAY PUMP A START AND TIIE ARRIVAL OF TIIE PEAK PRESSURE TO CS-
]
125A
.
- DETERMINE TIIE DIFFERENTIAL PRESSURE AGAINST WIIICII I
CS-125A WILL OPEN
-
DETERMINE TIIE TIME DELAY BETWEEN TURNING TIIE'CS-125A
-
CONTROL SWITCII TO OPEN AND:
1) VALVE PASSES FLOW; AND
~
2) VALVE IS FULLY OPEN
- OBTAIN FLOWSCANNER DATA NEEDED TO EVALUATE TIIE CONDITION OF CS-125A -
u
1
-
.
i
,
_.
-.
..
'
.
f-(
-
t
" J"!!
SEQUENCE OF EVENTS
,
n.
(9/18/93 - 9/24/93)
- - -
-
,j l
t
"
.,
i L"
.:
i NRC CONFFRENCE CALL (9/22/93)
.
.
-
,
INFORMATION OBTAINED DURING DEVELOPAENT OF -
i
.
SPECIAL TEST l
- WORST CASE DBA IS MSLB WITII OFFSITE POWER AVAILABLE
,
'
- DESIGN MODELING WITII REVIEW OF FLOWSCANNER DATA
,
INDICATED POSSIBLE VALVE PERFORMANCE PROBLE5IS ENTERED SITE DIRECTIVE W4.101,
NONCONFORMANCE/ INDETERMINATE ANALYSIS PROCESS (9/24/93)
- .
i I
D
,. -
L I-f v.
.
....
..
..
.
-
-
.
.
.
-..
.-..
___.
J.
i i
' =-
-
~.
i
-
c
,
, _ _
ENTERGY
.
i
!
!
!
.t
!-
l SUMMARY OF TESTING
,
i
.
'
!
.
a
.
(
i
- r s
'
d:
(
)
.
t JOHN HOUGHTALING Technical Services Manager
.
a
.
<-g-CS TRAIN A
'
i CS TRAIN A DECLARED INOPERABLE (9/25/93)
l e
i
- START OF SPECIAL TEST J
-- START OF 72 IIOUR LCO ACTION ShTEh1ENT
i STARTED CS PUMP A l
.
i
,
- SDCIIX PRESSURE PEAKED TO APPROXIAIATELY 308 PSIG, l
l STABILIZED AT APPROXI51ATELY 30I PSIG
- CS-125A PRESSURE PEAKED TO APPROXIMATELY 468 PSIG, j
STABILIZED AT APPROXIh1ATELY 450 PSIG
!
!
VENTED CS TRAIN A PIPING f
l
.
-
EVAL'UATION OF TRAIN A PIPING FOR
/
'
)
OVERPRESSURIZATION l
.
- CS PIPING BETWEEN CS-117A AND CS-125A DESIGN PRESSURE IS.
300 PSIG i
^?
- PIPING AND SUPPORTS INSPECTED I
i
'
i
- CONCLUDED TIIAT STRUCTURAL INTEGRITY OF PIPING WAS
.j NOT ADVERSELY AFFECTED
!
!
INSPECTED TRAIN A PIPING
!
.
.i
- 18 FT. OF PIPING DISCOVERED WITIIOUT IIIGII POINT VENT-i
r
..
I
_
..
<-
CS TRAIN A
,
,
I
.
b CS TRAIN A AND B SIMILARITIES EVALUATED
.
(9/25/93)
- PIPING LAYOUT, LENGTII, AND SLOPES I
,
- VENT LOCATIONS l
!
f
- PREVIOUS SURVEILLANCE TESTS
.
- N1AINTENANCE AND OPERATIONAL DATA EVALUATED
!
SIGNIFICANT DIFFERENCES BETWEEN CS TRAIN 'A
!
AND B
'
- TRAIN A, FROh! PUh1P TO CS-125A, IS APPROXIh1ATELY TWICE
.
AS LONG AS TIIE TRAIN B IIEADER
,
- DEAD-LEG PORTION OF TRAIN A, BETWEEN CS-118A AND i
CS-125A, IS 4 TIAIES LONGER TIIAN TRAIN B
- TRAIN A PIPING IIAS A LONG IIORIZONTAL (140 FT.) RUN OF
[
DEAD-LEG PIPING WITII NO ELEVATION CIIANGE OR IIIGII -
'
POINT VENT IN RUN OF PIPING
!
t
'
- TRAIN B PIPING IIAS ONLY A 45 FT. RUN OF DEAD-LEG PIPING'
.
'
WITII A IIIGII POINT VENT
!
- TRAIN B IIAS VENTS ON ALL IIIGII POINTS i
- CS-125B IIAS FASTER AVERAGE IST STROKE TIAIE
- NO SIGNIFICANT 51AINTENANCE PERFORAIED IN RECENT l
IIISTORY ON TRAIN B i
- OPERATIONAL DATA INDICATED NO OPERATIONAL PROBLE51S
-
,
.
-
h
.
,
a
.
cp CS TRAIN A
.
BELIEVED CS TRAIN B WOULD NOT EXPERIENCE
.
l THE SAME PROBLEMS OR IF IT DID, IT WOULD NOT i
BE AS SEVERE -
!
r j.-
- CS TRAIN B OPERABLE -(9/25/93)
,
i i
NEW VENT INSTALLED IN CS TRAIN A - (4/27/93)
{
- VENTED CS TRAIN A
f
!-
STARTED CS PUMP A SEVERAL TIMES l
.
f
- FLUSII AND VENT OPERATIONS
,
i.
'
i
- PEAK PRESSURE AT :
CS-125A SDCIIX
)
1)
2)
y 3)
4)
5)
6)
'
i
,
}
- VENTED TRAIN A PIPING NUMEROUS TDIES
'
!
j EBASCO HYDRAULIC EXPERTS CONTACTED
'
.
- AIR ENTRAPMENT PIIENOMENA CONFIRMED
!
.;
ULTRASONIC INSPECTION REVEALS AIR a
- LONG IIORIZONTAL RUN OF PIPE IIAS AIR BUBBLE
.
'
i
!
i
-
.
.
.
-.
.
..
q f
th CS TRAIN A i
.
FLUSHED AND VENTED TRAIN A
,
,
ULTRASONIC INSPECTION OF TRAIN A
.
- AIR POCKET STILL EXISTS j-c
ENFORCEMENT DISCRETION GRANTED - (9/28/93)
.
- 72 IIOUR EXTENSION OF LCO 3.6.2.1 ANOTHER VENT VALVE CS-1211 - (9/29/93)
.
- VENTED CS TRAIN A
.
STARTED CS PUMP A
.
- NO WATER IIAMMER OR CIIECK VALVE SLAM
- SDCHX PRESSURE SPIKED TO 315 PSI AND CS-125A PRESSURE SPIKED TO 337 PSI
- VENTED CS TRAIN A ULTRASONIC INSPECTION OF CS TRAIN A-
.
- NO AIR IN PIPING
,
ADDITIONAL SOLENOID INSTALLED ON CS-125A
.
ACTUATOR
- TO REDUCE OPENING TIME PERFORMED VALVE OPENING TESTS ON CS-125A
.
- USED PRESSURE TEST PUMP t -
- STATIC PRESSURES WERE VARIED FROM 320 TO 290 PSI
- CS-125A DID NOT OPEN SMOOTIILY AND CONSISTENTLY
,
-
.
.
-
.
-
,
-
W-CS TRAIN A
'
.
!
!
l.
?
.
PERFORNED VALVE OPENING TESTS ON CS-125 A-'
i
(9/30/93)
h
!
s.
- PRESSURE TEST PUMP USED
,
l.
-- OPENED SATISFACTORILY WITII STATIC PRESSURE OF
!
APPROXIMATELY 300 PSI
-
.;
i
-
'
-- VENTED TRAIN A l
i,.
(-
LICENSE AAENDMENT 86 GRANTED - (10/1/93)
.
!-
'
S
- ALLOWS CS-125A AND/OR B TO BE OPEN
,
!
j
- OPENED CS-!25A
!
i
.;
y
>
l
'
!
'!
i l
o
..
f a
$
?
-
!.
.i
.-
!
..
.
,
s
--
n
-
-
.
e
.
-
i
,
i
~-
,
.i cst %W#
-
!'i q
.
.
!
i 4-
i L
..
'
SIMILAR SPECIAL TEST PERFORMED FOR CS-125B
.
N
'
- AS FOUND PEAK PRESSURE GREATER THAN EXPECTED, BUT '
- 4
-
LESS THAN A TRAIN
.
'
- CS-125B OPENED SATISFACTORILY WITH STATIC DIFFERENTI AL -
-l l
OF 335 PSID
!
.;
- SYSTEM FLUSHED AND VENTED'
.
-
.;
i
?
c t
f I
-
h i
.
F-
~
e
..
h
-
l
't
I
.
,.
L-
.
- -
.
.-
-.
..
il
_-
..
,
r y
_
__
i ENTERGY R
.
t j
-
i
KEY POINTS
-l
i
')
u i
i i
l l
'!
.
i 3'!
l i
.!
E DAN PACKER General Manager Plant Operations
,
I
+
,. -...
-.
e
,
.
r-p KEY POINTS
!
i
)
l
!
INOPERABLE SINCE 2/1/93
.
l
.
ROUTINELY HAD DIFFERENTIAL PRESSURES HIGHER THAN
DESIGN AND VALVE WORKED l
'
INITIAL ANALYSIS OF PROBLE51 WAS HINDERED BY:
.
..
}'
{
.
,
l
- INITIAL ASSUMPTIONS
'
j.
- PERFORMANCE PROBLEMS NOT EVIDENT FROM ROUTINE, j
[
SURVEILLANCES
!'
- VENDOR DESIGN AND OPERATIONAL DATA UNAVAILABLE
I
!
!
EXTENSIVE ANALYSIS AND TESTING
j.
.
,
i
!
I
'
- STRONG FOCUS ON PROBLEM RESOLUTION
>
- ANALYSIS TECIINIQUES DEVELOPED AND VALVE PERFORMANCE
!
f~
MODELED USING FIELD DATA l
F
!
r
. DESIGN OF A TRAIN WOULD NOT ALLOW ADEQUATE l
l~
.
i-VENTING p
.,
I i
i SIGNIFICANT SIANAGEAfENT INVOLVEAIENT SINCE
'!
.
!
BEGINNING
!
'
L-
p
l l
I'
.e
!
j i-
!
i
,
-
- -
a-
,
.
?
i
. -..
..
..
,,
,
-,
.-
-
..
,
i L..
-
..
'
,
-
.
.
, _ _
!
ENTERGY
!
.
'
.
i
.
!
,
t
ROOT CAUSE EVALUATION
,
,
!
k I
.
I
!
$.
k I
,
,.
>
.
r
!.
.
.
.
DAX PACKER
,
General Manager
!
Plant Operations
!
.
'
r h
i
- -
-.
. -
..
-., -
.
h$h\\
-
r aan c_w. -
ROOT CAUSE EVALUATION
'
i AIR ENTRAPPED IN THE CS DISCHARGE PIPING CREATED A
.
PRESSURE SURGE BETWEEN CS PUMP A AND CS-125A ON l
PUMP START HISTORICAL (SINCE) 1985 SHUTDOWN COOLING HEAT
EXCHANGER (SDCHX) INLET PRESSURE RANGES FROM 270 TO 370 PSIG SINCE REFUEL 5, CS-125A FAILED TWICE WITH UPSTREAM e
PRESSURE (2/1/93 AND 9/13/93)
REVIEW OF HISTORICAL PUMP AND VALVES INSERVICE
TESTING DATA SHOW NO SIGN OF VALVE PERFORMANCE PROBLEMS
,
h i
y I-i i
d
-
- -
-
,.
-
..
.
a
.
\\
'
,
i
,
- " 4. "
ROOT CAUSE
-
l
,
i i
p g-
,
!
.;
i-l
ROOT CAUSE
.;
~
- SYSTE3I DESIGN IS SUCII TIIAT CS VALVES ROUTINELY j
EXPERIENCE DIFFERENTIAL PRESSURES IIIGIIER TIIAN VALVE-l
,
DESIGN s
,
.,
r l
'
VALVE PERFORMANCE DECREASED OVER TIME,
!
ELIMINATING ITS MARGIN ABOVE DESIGN
'
i l
l-l
.
!
!
.
s
.
'
E l
,
'
t i
?.
.
!
o e
J
,
-
<
.
l t
.
n c_4 SPECIFIC CORRECTIVE ACTIONS l
i
?
.
.
EVALUATE PROCEDURES AND DESIGN TO 311NI511ZE PRESSURE SURGES l
\\
INSPECT / REPAIR / REPLACE CS-125A WITII VENDOR ASSISTANCE
=
DURING REFUEL 6 s
.
I BASED ON INSPECTION:
=
(a) REVIEW MAINTENANCE I'RACTICES WITIl RESPECT TO VALVE ASSEMRLY/
DISASSEMBLY
,
i i
f (b) REVIEW AND UPGRADE PLANNED MAINTENANCE REQUIREMENTS i
.
INSPECT CS-125B
.
COSIPLETE EVALUATION OF POTENTIAL FOR OTHER SYSTE51S TO
.
EXPERIENCE A SI511LAR PROBLEh!
i UPGRADE PIPING DESIGN PRESSURE PRIOR TO REFUEL 6 l
=
,
j i
'
t
,
,
,
)-
!
a i
l t
.
,
,
,
,
.
.
.
.
..
.
,
-
--
,
a
.
.
_.
.
_-
,
r i
ENTERGY
,
'
l'
l
,
$ ELF ASSESSMENT i
.
i
!
t
-
.
>
y
>
!
t
i i
,
i l
,
'
t i
T
i
l
DANiPACKER i
Generail Manager
'
!
Plant Operations
I
i i
..
_.
_
. _. _
_....., _..,.
--
-
.
'i
.
.
%
cS-SELF ASSESSMENT.
,
t
TWO SELF ASSESSMENT TEAMS I
- CORPORATE LEAD
- SITE LEAD q
CORPORATE j
- REPRESENTATIVES FRO 51 CORPORATE ASSESS 51ENT GROUP,
OPERATIONS SUPPORT GROUP AND ANO
.;
- SCOPE l
,
=> REVIEWED SYSTEM DATA PRIOR TO 9/13/93 EVENT
.t
=> DID CONDITIONS AT CS-125A EXIST PREVIOUSLY
,
=> WAS SUFFICIENT DATA AVAILABLE TO PROVIDE TILE BASIS OF AN
.I
'
'
SITE
- REPRESENTATIVES FRO 51 OPERATIONAL EXPERIENCE l
ENGINEERING (ISEG FUNCTION) AND OPERATIONS
- SCOPE
=> ASSESS ACTIVITIES ASSOCIATED WITH CS-125A FROM 9/13/93 UNTIL i
!
RESOLUTION j
,
CONCLUSIONS e
,
- AFTER 2/1/93 VALVE CIIARACTERIZED AS INOPERABLE
- PRIOR TO 2/1/93 PROBLE51 COULD NOT IIAVE BEEN REASONABLY ~
IDENTIFIED
!
- '!
'i
!
._
.-
Y
'
cd" -
SELF ASSESSMENT a
,
l
.
t
'i f
SUMMARY OF FINDINGS
]
.
c
,
l
- THRESHOLD FOR ENTERING CORRECTIVE ACTION PROGRAM NOT-COMMONLY UNDERSTOOD BY SITE PERSONNEL. CLARIFICATION
' OF DEFINITIONS APPEARS TO BE WARRANTED
!
r
!
- SIGNIFICANT IMPROVEMENTS WERE MADE TO REDUCE THE -
l t
NUMBER OF CORRECTIVE ACTION DOCUMENTS. SOME
.j
-
j CONFUSION STILL EXISTS ABOUT WIIICH CORRECTIVE ACTION i
DOCUMENT TO USE
.
,
!
- OWNERSHIP OF CORRECTIVE ACTION PROCESSES SHOULD BE.
-,
MORE CLEARLY DEFINED -' THIS WILL BE SYSTEM ENGINEERING
!
.
,
NEW CORRECTIVE ACTION PROCESS - QAT CHARTERED BY
SITE LEAD TEAM
-
!
.
IN 1992 IN 1993 (10/29/93)
PRES + SOR + QN = 220 209 CRs.
!
OUTAGE YEAR NON OUTAGE YEAR j,
,
l
i l
' i
.!
f l
i
.I
,
.e
-
e
_.,. ____
.m
..
.
--. -
.
.m.
.
-_
---
-- --------
.
_
.
_ _
.
_
_
ENTERGY l
{
i l
'
CORRECTIVE ACTIONS t
RAY BU~RSK1 Director, Nuclear Safety
.
.
_
.
i
-
'
28 GENERIC CORRECTIVE ACTIONS
i
,
i CONDUCT TRAINING SESSIONS BY DEPARTMENT l
e
!
- E51PIIASIZE CORRECTIVE ACTION PROGRASI GOALS i
!
- DEFINE INDIVIDUAL RESPONSIBILITIES
- DISCUSS SIANAGESIENT EXPECTATIONS l
- CLARIFY ENTRY REQUIRESIENTS FOR TIIE CORRECTIVE ACTION
'
PROCESS
- OPERATIONS SUPERVISORS, SYSTEh! ENGINEERS, STA'S COSIPLETE
!
!
'
FOIG1ATION OF THE CONDITION REVIEW. BOARD
=
- FUNCTION TO REVIEW ALL CONDITION REPORTS (CRs) AND CONDITION IDENTIFICATION (CIs) ON TIIE FRONT END TO ENSURE PROPER PRIORITY AND DEDICATION OF RESOURCES l
)
- 51E51BERSIIIP WILL BE GENERAL 51ANAGER PLANT OPERATIONS, DIRECTOR OF NUCLEAR SAFETY,51ANAGER OF LICENSLNG, t
51ANAGER OF OPERATIONAL EXPERIENCE ENGINEERING,
'
l DIRECTOR OF DESIGN ENGINEERING
!
- REVIEW C05151ENCED TIIIS 510RNING
DAILY PRECURSOR TRAINING PROGRAM (IFI'P) REVIEW
- PROCEDURE CLARIFICATION
- TRAINING AS NECESSARY
'
.
.
i J
!
!
,
s
$
.
.
-
-
-
-
. -
.
.
l
..
'
.
~.
-
m
!
._-
!
ENTERGY i
t
.
i
.
I-
!
SAFETY SIGNIFICANCE
,
i-
,
i i
-
H,
!
,
'
t
.
.
,
i
!
i
'
-
i i
i
.
>
l
-
,
ROBERT AZZARELLO i
'
Director, Design Engineering
-
i
-
.
.
- < -
SAFETY SIGNIFICANCE q
_
!
PROBABILITY l
CONTAINMENT SPRAY TRAIN B INOPERABLE FOR 3 DAYS DUE
!
,
[
j -
TO CASCADING TECII SPECS SINCE 2/I/93
?
!
-
CONTAINMENT SPRAY TRAIN B OUTAGE LASTED 2 DAYS IN i
!
.
AUGUST 1993 j
li i
Y l
DURING TIIE CASCADING TECII SPEC PERIOD, CONTAINMENT i
{
.
[s SPRAY SYSTEM B WOULD IIAVE REALISTICALLY PERFORMED
!
ITS FUNCTION
!
'
i i
!-
THEREFORE:
!
PROBABILITY OF ACCIDENT DURING 2 DAY OUTAGE =
.
,
- .
3.6 x 10-5 l
.s -
i
.
t b
i l
CONSEQUENCES WITH NO CONTAINMENT SPRAY l
I CONTAINMENT DESIGN PRESSURE = 44 PSIG
!
e
!
i.
!
CONTAINMENT FAILURE PRESSURE > 88 PSIG I
.
i-i
MAIN STEAM LINE BREAK = 47.9 PSIG CONTAINMENT PEAK l
j
=
j PRESSURE
.j
=
I-
j LBLOCA = 43.0 PSIG WITII 4 FAN COOLERS
'
=
-
I l
{
THEREFORE:
)
NO REALISTIC TIIREAT OF CONTAINMENT FAILURE
.
=
,
,
.
[
f NO IMPACT ON PUBLIC SAFETY
.
.
+
!
!-
i,
e a,
,
I
' k
,
,
-
PRELIMINARY RESULTS OF TliE
,
.
a cp PRESSURE SURGE SUSCEPTIBILITY REVIEW
,
'
REVIEWED ALL SAFETY IELATED SYSTEMS FOR SUSCEPTIBILITY TO THE CONTAINMENT SPRAY SYSTEM EVENT
-
CONTAINMENT SPRAY IS ONLY SYSTEM THAT CONTAINS A
!
A DESIGN BASIS FLOWPATH THAT IS NEVER EXPOSED TO PUMP FLOW PORTIONS OF 3 SYSTEMS WERE DETERMINED TO BE
j POSSIBLY SUSCEPTIBLE
- SAFETY INJECTION j.
- EMERGENCY FEEDWATER
{
- CIIEMICAL AND VOLUME CONTROL i
l
SUSCEPTIBLE PORTIONS OF EMERGENCY FEEDWATER &
CHEMICAL AND VOLUME CONTROL ARE NOT AN
'
IMMEDIATE CONCERN BECAUSE THEY HAVE BEEN FLUSHED WITH PUMP FLOW VIA TESTING PER OPS l
'
SURVEILLANCE PROCEDURES OR GENERIC LETTER (GL) 89-10 MOV PROGRAM s
,
)
!
.
I j
i
l
l t
y
\\_
-
q,
.-
gy PRELIMINARY RESULTS OF THE
<d?
PRESSURE SURGE SUSCEPTIBILITY REVIEW
,
.
SUSCEPTIBLE PORTIONS OF SAFETY INJECTION ARE NOT
'
AN IMMEDIATE CONCERN BECAUSE OF EITHER OF THE FOLLOWING:
t l
l
- IIAVE BEEN FLUSHED WITII PU51P FLOW VIA TESTING PER OPS SURVEILLANCE PROCEDURES f
,!
- PUSIP DISCIIARGE PRESSURE RECORDED EVERV 30 SECONDS DURING REFUEL 5 GL 89-10 MOV TESTING INDICATED NO.
PRESSURES ABOVE PUMP SHUTOFF HEAD AT PUMP START i
FUTURE ACTIVITIES - DETERMINE LONG TERM ACTIONS
.
NECESSARY TO ENSURE AIR ENTRAPMENT IS EITHER DETECTABLE OR FLUSHED IN THE SUSCEPTIBLE SYSTEMS
,
t h
.
.
..
-
.-
.
!
-
..
-__
.
_
.
_
ENTERGY
,
f
?
W3 EXFORCEMENT
'
PERSPECTIVE
i
)
_l
)
'
l
l
i
!
i h
i i
l
'
!
LARRY LAUGHLIX
Licensing Manager
.,
d
<
.,_
\\;..
'
.
,
g r-SEVERITY LEVEL /
DISCRETION
THE NRC MAY REFRAIN FROM PROPOSING A
,
CIVIL PENALTY FOR A SEVERITY LEVEL III VIOLATION INVOLVING A PAST PROBLEM, SUCH AS IN ENGINEERING DESIGN, OR INSTALLATION, THAT MEETS CRITERIA FOR:
,
.
'
A. DISCOVERY
'
B. CORRECTIVE ACTION i
.
k
!
>
_
.
..<;.1',._
&, S &'.
- '
.
.
R E L D.
L t
op DISCOVERY
!
(
ORIGINAL SYSTEM DESIGN RESULTED IN i
PROBLEMS INVOLVING AIR ENTRAPMENT, AND i
!
SUBSEQUENT PERFORMANCE OF CS-125A
- WERE DISCOVERED FOLLOWING IN-DEI 9'H INVESTIGATIONS RELATIVE TO CS-125A RECENT PERFORMANCE
.
- NOT EVIDENT AS A RESULT OF PAST ROUTINE SURVEILLANCES OF CS-125A
,
f
- MASKED BY CONSISTENT SYSTEM HYDRAULIC PERFORMANCE AND EXISTED SLNCE COMMERCIAL LICENSING
.
4
.
.
k
.
.
.
.-
..
.
$
NO' y..
'
,
c.
g:: ja
b"Pd$fs i
c_-e-CORRECTIVE ACTIONS r
i
.. ;
e i
COMPREHENSIVE CORRECTPE ACTIONS
f FOLLOWING DISCOVERY:
!
3:
'
I
- INITIAL PROBLEM PROMPTED ENGINEERING EVALUATION
.
[
o QUESTIONING ATTITUDE
-
,
.
o PROMPT INVESTIGATION
- ENGINEERING EVALUATION PROMPTED IN-DEPTH SYSTEM TESTING
!
- THOROUGH INVESTIGATION OF ROOT CAUSE
,
.,
- SELF ASSESSMENT TEAMS
'
.
o INDEPENDENT
=> INTERNAL
,
- BROAD PROGRAMMATIC APPROACH TO
>
.
l CORRECTIVE ACTIONS
,
I a
l
.
'
-
- - - -
.
--
y l-CIVIL PENALTY-
.
- ~f!"
ADJUSTMENT FACTORS
l (MITIGATION)
}
.
.
[
SHOULD THE NRC CONCLUDE THAT THIS I
CONDITION WARRANTS A CIVIL PENALTY, THE
FOLLOWING CIVIL PENALTY ADJUSTMENT
.
FACTORS WOULD APPLY:
REPORTING
- CONSERVATIVELY APPLIED 10CFR50.72 NOTIFICATION REQUIREhlENTS
.i
,
- CONSERVATIVELY APPLIED 10CFR50.73 REPORTING
,
REQUIREMENTS
.
.
~
i PROMPT AND EXTENSIVE CORRECTIVE e
'
ACTIONS
,
.'
- CI RAISED QUESTIONS OF ENGINEERING
~
'
- BROADLY FOCUSED EVALUATION
- INVESTIGATION INITIATED IN A TIMELY AIANNER y
q
- W3 DEMONSTRATED INITIATIVE (RE: SCOPE OF ACTIONS)
=> EXTENSIVE TESTING
- RANGED FRO 51 PERFORMING SPECIAL TESTING TO REVIEWS OF OUR CORRECTIVE ACTION PROCESS
- CS TRAIN B INVESTIGATED FOR SIMILARITY
- THOROUGII ROOT CAUSE ANALYSIS
- SELF ASSESSMENT OF PROGRAMMATIC ISSUES
,
W3 PERFORMANCE
.
- OVERALL PLANT PERFORMANCE RECORD
'
- NO ESCALATED ENFORCEMENT ACTION IN PAST TWO
.
'
YEARS
'
,
e,
?
.
-
.
-
--
.
-
,
-
-
i
..
'
I (
.
..
,
_
._
i
'
ENTERGY
.
,
I
'I
.
I i
'
!
CLOSING REMARKS
"
i
i
'
' ;
.{
- $
-
I
!
,
I i
i
!
.:
!
.
,
i
.
ROSS BARKHURST l
Vice President Operations
'
,
.t-l
-j
.
.i
<
t I
(
_
_
_
_
..
..
. *
(q
'
,
g:t
.f pg,.
[
c-g-CEOSING REMARKS.
r c
!
IGY POINTS
.
-!
SAFETY SIGNIFICANCE
I MANAGEMENT INVOLVEMENT t
e SELF-ASSESSMENT AND CORRECTIVE ACTION
,
IMPROVEMENTS
!
.
I*
MITIGATING FACTORS CONSIDERATION
.NEW CORRECTIVE ACTION PROCESS IS SHOWING
IESULTS
.
k i
,,.
. -l l
h
.b y
t i
.)
i
_
,
..
.
.
.
.
f; I
c
c-g-CLOSING REMARKS ist
-t
!
!
l; IN 1992 IN 1993 (10/29/93)
0
!
'
- ,
PRES + SOR + QN = 220 209 CRs OUTAGE YEAR NON OUTAGE YEAR ~
!
F l
>
JANUARY
!
-
FEBRUARY -
l i
w MARCII
-
I APRIL
- 10
i l
MAY 17-I
-
?
.. !
is JUNE
- 31 i
l
<-
JULY
!
+
-
- l
-
AUGUST
. 21
,j e
{
SEPTEMBER -36 I
,,
- t OCTOBER - 40 -
.,
J.
p.
~
.
.
I g..
'j.
_ - - _ _ _ - _ _ _ - _ - _ _ _ _ _ _ _ _ _ - _ _ _ _ _ - - _ _ _ _ - _ _ _ _ - _ _ _ _ _ _ - _ _ _ _ _ _ _ - -,