ML18152A501
| ML18152A501 | |
| Person / Time | |
|---|---|
| Site: | Surry  |
| Issue date: | 06/19/1992 |
| From: | Reyes L NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | Stewart W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| References | |
| NUDOCS 9207010270 | |
| Download: ML18152A501 (32) | |
See also: IR 05000280/1992012
Text
Docket Nos. 50-280, 50-281
JUN 19 1992
Virginia Electric *and Power Company
ATTN:
Mr. W. L. Stewart
Senior Vice President - Nuclear
5000 Dominion Boulevard
Glen Allen, VA
23060
Gentlemen:
SUBJECT:
ENFORCEMENT CONFERENCE SUMMARY
(NRC INSPECTION REPORT NOS. 50-280/92-12 AND 50-281/92-12)
This letter refers to the Enforcement Conference held at our request on
{9--f-l~ .
June 10, 1992.
This meeting concerned activities authorized for your Surry
facility.
The issue discussed at this conference was related to the ability
of the automatic start feature of your charging/safety injection pumps to
function as required during a potential design basis accident.
The conference
was beneficial in providing us your perspective on the issue, and your root
cause evaluation and corrective actions. A list of attendees and a copy of
your handout are enclosed.
We are continuing our review of this issue to
determine the appropriate enforcement action.
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 and its enclo-
sures will be placed in the NRC Public Document Room.
Should you have any questions concerning this matter, please contact us.
Enclosures:
1.
List of Attendees
2.
Handout
cc w/encls:
E. W. Harrell
Vice President - Nuclear Services
Virginia Electric & Power Company
5000 Dominion Boulevard
Glen Allen, VA
23060
cc w/encls cont'd: See page 2
Sincerely,
L~~es, Director
Division of Reactor Projects
....
Virginia Electric & Power
Company
cc w/encls cont'd:
J. P. O'Hanlon
Vice President - Nuclear Operations
Virginia Electric & Power Company
5000 Dominion Boulevard
Glen Allen, VA
23060
M. R. Kansler
Station Manager
Surry Power Station
P. 0. Box 315
Surry, VA
23883
M. L. Bowling, Jr., Manager
Nuclear Licensing
Virginia Electric & Power Company
5000 Dominion Boulevard
Glen Allen, VA
23060
Sherlock Holmes, Chairman
Board of Supervisors of Surry County
Surry County Courthouse
Surry, VA
23683
Dr. W. T. Lough
Virginia State Corporation Commission
Division of Energy Regulation
P. 0. Box 1197
Richmond, VA
23209
Michael W. Maupin
Hunton and Williams
P. 0. Box 1535
Richmond, VA
23212
C. M. G. Buttery, M.D., M.P.H.
State Health Commissioner
Office of the Commissioner
P. 0. Box 2448
Richmond, VA
23218
Attorney General
Supreme Court Building
101 North 8th Street
Richmond, VA
23219
bee w/encls: See page 3
2
JUN 19 1992
Virginia Electric & Power
Company
bee w/encls:
P. Fredrickson, RII
B. Buckley, NRR
G. Jenkins, EICS, RII
K. Clark, PAO, RII
R. Pedersen, OE
All NRC Attendees
Document Control Desk
NRC Resident Inspector
U.S. Nuclear Regulatory Commission
Route 1, Box 166
Surry, VA
23883
NRC Resident Inspector
U.S. Nuclear Regulatory Commission
Route 2, Box 78-A
Mineral, VA
23117
R~
A~uff
06/fi /92
RII~
PFredrickson
06/ 'f,/92
RI)iEY
M~nkule
a-()6/(f') /92
l
3
JUN 19 1992
ENCLOSURE 1
LIST OF ATTENDEES
Virginia Electric and Power Company
W. Stewart, Senior Vice President, Nuclear
J. O'Hanlon, Vice President, Nuclear Operations
M. Kansler, Station Manager, Surry
J. McCarthy, Assistant Station Manager, Surry
G. Kane, Manager, Nuclear Quality Assurance
M. Bowling, Manager, Nuclear Licensing & Programs
G. Miller, Senior Staff Engineer, Nuclear Licensing & Programs
Nuclear Regulatory Commission
S. Ebneter, Regional Administrator, Region II (RII)
J. Johnson, Deputy Director, Division of Reactor Projects (DRP) RII
E. Merschoff, Deputy Director, Division of Reactor Safety, RII
C. Evans, Regional Counsel, RII
M. Sinkule, Branch Chief, DRP, RII
H. Berkow, Project Director, Directorate II-2, Office of Nuclear Reactor
Regulation
P. Fredrickson, Section Chief, DRP, RII
.
M. Branch, Senior Resident Inspector, Surry, DRP, RII
G. Jenkins, Director, Enforcement and Investigation Coordination Staff, -RII
A. Ruff, Project Engineer, DRP, RII
NRC Representativ_es (Participation by Teleconferencing}
B. Buckley, Senior Licensing Project Manager, Surry, NRR
R. Pedersen, Enforcement Specialist, Office of Enforcement
ENCLOSURE 1
LIST OF ATTENDEES
Virginia Electric and Power Company
W. Stewart, Senior Vice President, Nuclear
J. O'Hanlon, Vice President, Nuclear Operations
M. Kansler, Station Manager, Surry
J. McCarthy, Assistant Station Manager, Surry
G. Kane, Manager, Nuclear Quality Assurance
M. Bowling, Manager, Nuclear Licensing & Programs
G. Miller, Senior Staff Engineer, Nuclear Licensing & Programs
Nuclear Regulatory Commission
S. Ebneter, Regional Administrator, Region II (RII)
J. Johnson, Deputy Director, Division of Reactor Projects (DRP) RII
E. Merschoff, Deputy Director, Division of Reactor Safety, RII
C. Evans, Regional Counsel, RII
M. Sinkule, Branch Chief, DRP, RII
H. Berkow, Project Director, Directorate II-2, Office of Nuclear Reactor
Regulation
P. Fredrickson, Section Chief, DRP, RII
M. Branch, Senior Resident Inspector, Surry, DRP, RII
G. Jenkins, Director, Enforcement and Investigation Coordination Staff, RII
A. Ruff, Project Engineer, DRP, RII
NRC Representatives (Participation by Teleconferencing)
B. Buckley, Senior Licensing Project Manager, Surry, NRR
R. Pedersen, Enforcement Specialist, Office of Enforcement
SURE 2
- .*.
?
I
1--,r-------~
VIRGl/f/lA POWER
- Surry Power Station
Etiforcement Omference
June 10, 1992
LDeeo.1
1-,a---. --Ag,-.-enda----,,
INTRODUCTION
W. L. STEWART
MANAGEMENT OVERVIEW
M.R.KANSLER
MAY 11, 1992 EVENT
J. H. McCARTHY
AUGUST 21, 1991 EVENT
M.R.KANSLER
ROOT CAUSE EVALUATION
M. L. BOWLING
CORRECTIVE ACTIONS AND .
M.R.KANSLER
SAFETY SIGNIFICANCE
CONCLUSIONS
J. P. O'HANLON
LC>eeo.2
- l\\\\
May 11, 1992 Event
VIRGl/f/lA POWER
J. H. McCARTHY
SURRY ASSISTANT STATION MANAGER
NUCLEAR SAFETY AND LICENSING
,,
I
,
I
ll>eeo.3
- I\\\\
Event Description
- ON MAY 11, 1992 IT WAS DISCOVERED THAT
BOTH THE 'A' AND 'C' CHARGING/ HIGH HEAD
SAFETY INJECTION PUMPS WERE IN A
CONFIGURATION INCONSISTENT WITH THE
REQUIREMENTS OF TECHNICAL SPECIFICATION 3.3.B.2 FOR CERTAIN INTERVALS FROM MAY 1,
1992 TO MAY 11, 1992
- CHARGING PUMP STATUS
- 'A' PUMP WAS IN AUTO STANDBY AND
AVAILABLE
- 'B' PUMP WAS OPERABLE AND IN SERVICE
- 'C' PUMP WAS IN PULL-TO-LOCK AND
AVAILABLE
...
I
LDeeo.4
, ***
r--C_'h_a_l'g_in_g_Pu_,n_~_Im-~-~-ks-----,,
- ORIGINAL DESIGN OF THE CH/HHSI PUMP BREAKER
INTERLOCKS INCLUDED FEATURES TO ENSURE HHSI FLOW
FOLLOWING A LOOP AND ONLY ONE PUMP ON EACH
.
EMERGENCY BUS
- AN UNDERVOLTAGE EVENT WITH 'C' PUMP ALTERNATE
BREAKER (15J2) RACKED OUT WILL LOCK OUT THE 'A'
CHARGING PUMP
- WITH 'A' AND
1B
1 PUMPS OPERABLE AND THE *c* PUMP IN PULL-
TO-LOCK, THE LEAD FOR THE UNDERVOLTAGE INTERLOCK ON
THE
1A
1 PUMP MUST BE LIFTED TO ENSURE HHSI FLOW AFTER
A DESIGN BASIS ACCIDENT WITH A LOOP AND A SINGLE
ACTIVE FAILURE
- THE MAY 11, 1992 CHARGING PUMP CONFIGURATION WAS
INADEQUATE TO ENSURE HHSI PUMP FLOW IN THE EVENT OF A
DESIGN BASIS ACCIDENT COINCIDENT WITH A LOSS OF
OFFSITE POWER AND A SINGLE ACTIVE FAILURE
LDeeo.5
Omditions Which Will Trip And Lockout Surry
Charging Pump Breakers
H EMERGENCY
11H
11 Bus Undervoltage ( + 1 sec)
+ 15H5 Closed
or
15J2 Closed
or
15J2 A.I.
or
15J5 A.O.
11H
11 Bus Undervoltage
+ 15J2 A.O.
15H1
BUS
15H~5H6J
UNIT 1
J EMERGENCY
BUS
15H6 A.I.
or
15H6 Closed
15J2 A.I.
KM2295Ao(5A)
Sequence Of Events
- JANUARY 29, 1992
- MARCH 26, 1992
- APRIL 26, -1992
- APRIL 29, 1992
DCP APPROVED (BUT NOT IMPLEMENTED)
THAT ALLOWED THREE CHARGING PUMPS
TO BE IN AUTOMATIC. IF 'C' PUMP IS IN
PULL-TO-LOCK FOR MAINTENANCE, 'A'
PUMP MUST HAVE UV TRIP DEFEATED.
.1-GOP-1.3APPROVED. THIS PROCEDURE
CALLED FOR THE THREE CHARGING PUMPS
TO BE IN AUTOMATIC UPON INCREASING
RCS TEMPERATURE> 350°F.
DCP TECHNICAL REVIEW APPROVED.
1-GOP-1.3 CHANGED VIA THE PROCEDURE
ACTION REQUEST (PAR) PROCESS TO
ALLOW SHIFT SUPERVISOR DISCRETION IN
CHARGING PUMP ALIGNMENT [REASON:
TESTING REQUIREMENTS FROM DCP
TECHNICAL REVIEW NOT YET COMPLETED].
.,
I
LDee0.11
I\\\\ Sequence Of Events (Continued)
- MAY 1, 1992
- MAY9, 1992
- MAY 11, 1992
REACTOR CRITICAL- A TWO-PUMP
ALIGNMENT WAS ESTABLISHED WITHOUT
LIFTING THE LEAD ON THE 'A' PUMP TO
DEFEAT THE UNDERVOLTAGE TRIP
CH/HHSI PUMP PERIODIC TESTING
CONDUCTED
LICENSED CONTROL ROOM OPERATOR
DISCOVERED 'A' PUMP UNDERVOLTAGE
TRIP WAS NOT DEFEATED
IMMEDIATELY PLACED PUMPS IN PROPER
CONFIGURATION AND REPORTED THE
EVENT TO THE NRC
.-
1
-
I
LDee0.7
[1'
August 21, 1991 Event
VIRGl/f/lA POWER
M.R.KANSLER
SURRY STATION MANAGER
I
,,
LDeeo.11
Cause Comparison Of The
Au ust 1991 And Ma 1992 Events
- MAY 11, 1992
- PREVIOUS CORRECTIVE ACTIONS WERE
RENDERED INEFFECTIVE BY IMPLEMENTING
AN INADEQUATE PROCEDURE CHANGE
- AUGUST 21, 1991
- DESIGN BASIS FOR OPERATION OF THE CH/
HHSI PUMPS ASSUMED MANUAL OPERATOR
ACTION IN LIEU OF AUTOMATIC OPERATION
i
-
LDeeo.11
,~
Correcti,ve Actions From August 21, 1991 Event I
- COMMITMENTS IN CORRESPONDENCE WITH THE NRC
- DETERMINE IF OTHER CRmCAL PLANT COMPONENTS
REQUIRE MANUAL OPERATOR ACTION INCONSISTENT
WITH THE DESIGN BASIS
- PERFORM ENGINEERING EVALUATION OF CH/HHSI
PUMP DESIGN BASIS TO DETERMINE APPROPRIATE
OPERATING CONFIGURATION (i.e.,TWO PUMP VS.
THREE PUMP OPERATION)
- REVISE PROCEDURES TO ALIGN CH/HHSI PUMPS
TO ENSURE THEIR AUTOMATIC ACTUATION
CAPABILITY IS MAINTAINED
- REASSESS MANUAL OPERATOR ACTIONS WITH
RESPECT TO SAFETY SYSTEM OPERABILITY
- DEVELOP POLICY FOR ACCEPTABLE MANUAL
OPERATOR ACTION
- TRAIN OPERATIONS AND ENGINEERING PERSONNEL
ON THE POLICY
COMPLETE
COMPLETE
COMPLETE
COMPLETE
COMPLETE
IN PROGRESS
l..0990.10
1
111a-~--Corro--'Cli--:-.v-e-A~ctio~. -ns---:Fi:-rom--A-:-u-g_us_t--:2:-:1~, ~19:-~:-1-:-E-=v-ent---,,
-~
(CAJntinued)
- ADDITIONAL CORRECTIVE ACTIONS
- PLACED UNIT 1 CH/HHSI PUMPS IN PROPER
ALIGNMENT AND VERIRED UNIT 2 PUMP
ALIGNMENT WAS SATISFACTORY
- ISSUED STANDING ORDER TO PRECLUDE
INAPPROPRIATE CHARGING PUMP ALIGNMENTS
- IMMEDIATELY BRIEFED OPERATORS ON EVENT
~ TECHNICAL BULLETIN ISSUED TO ENGINEERING
PERSONNEL DISCUSSING THE EVENT AND THE
CONCERN WITH USING MANUAL OPERATOR
ACTIONS FOR AUTOMATIC DESIGN FUNCTIONS
COMPLETE
COMPLETE
COMPLETE
COMPLETE
l.Oee0.11
,_.
Root Cause Evaluation
VIRGINIA POWER
M. L. BOWLING - MANAGER
NUCLEAR LICENSING AND PROGRAMS
,.
'
I
LDee0.12
. Root Cause Evaluation (RCE)
- RCE TEAM ASSEMBLED WITHIN 24 HOURS OF
EVENT DISCOVERY
- MULTIDISCIPLINE TEAM OF CORPORATE AND
STATION PERSONNEL LED BY CORPORATE
NUCLEAR SAFETY
- OPERATIONS, PROCEDURES, DESIGN, LICENSING
AND MANAGEMENT AREAS REVIEWED
- FORMAL ROOT CAUSE EVALUATION REPORT
PREPARED AND ISSUED
- RCE RESULTS PRESENTED TO BOTH STATION AND
CORPORATE MANAGEMENT AND TO THE NRC
l.Olleo.13
. 1, Root Cause Evaluation (Continued) I
- ROOT CAUSE
- INADEQUATE IMPLEMENTATION OF A
PROCEDURE CHANGE REQUEST (PAR) WHICH
RESULTED IN A CHARGING PUMP
CONFIGURATION THAT DID NOT MEET THE
DESIGN BASIS .
- MANAGEMENT CONSIDERATIONS
- INCOMPLETE PROCEDURE REVISIONS
- OPERATOR COMMUNICATIONS AND
SENSITIVITY TO EQUIPMENT
CONFIGURATIONS
- COORDINATION AND COMPLETENESS OF
DESIGN CHANGE
L.Oeeo.14
- I\\\\
11121111
STANDING
ORDER
OPTRNG
PROC-2
PUMPS
Event Barriers
DCP-3
PUMPS
PROC-3
PUMPS
HEATUP
OP TRNG
SIU
DCP TECH
ON DCP
ASSESSMENT
REV
STARTUP
I
CORRECT
CONFIGURATION
INCORRECT
--********************************************..._~~~~--.. CONFDURATION
1111192
l.Oell0.15
..
I~ Root Cause Evahtation (Connnued) I
- DETERMINE IF THE ROOT CAUSE WAS THE SAME AS
THE AUGUST 21, 1991 EVENT
..
- NO INDICATION FROM MANAGEMENT OR OPERATIONS
THAT SUBSTITUTION OF MANUAL OPERATOR
ACTIONS FOR AN AUTOMATIC SAFETY FUNCTION IS
AN ACCEPTABLE PRACTICE
- DESIGN CHANGE PROCESS WAS INCONSISTENT
REGARDING THE USE OF OPERATOR ACTIONS
- DETERMINE IF CORRECTIVE ACTIONS FROM THE
AUGUST 21, 1991 EVENTWEREADEQUATEAND
EFFECTIVELY IMPLEMENTED
-ADMINISTRATIVE CONTROLS PUT IN PLACE
EFFECTIVELY PRECLUDED RECURRENCE UNTIL PAR
WAS IMPLEMENTED
- COMMITMENT TRACKING SYSTEM TRACKED
CORRECTIVE ACTION THROUGH IMPLEMENTATION
l.Dtle0.111
'.,
I\\\\.*. Root Cause Evah,,ation ( Continued) I
- DETERMINE WHY THE EVENT WAS NOT
DISCOVERED EARLIER
- EXPECTED 3 PUMPS TO BE IN AUTOMATIC BUT
ACCEPTED 2-PUMP CONFIGURATION BECAUSE
- ALIGNMENT WAS ESTABLISHED BY
PROCEDURE AND HAD NOT BEEN CHANGED
DURING STARTUP
- NEED FOR VENTILATION TESTING
LD660.17
~~,
,, Root Cause Evaluation (Continued) I _
- RECOMMENDED CORRECTIVE ACTIONS
- ENHANCE BARRIERS THAT WILL PREVENT AN
INCORRECT CHARGING PUMP
CONFIGURATION
- REVIEW OTHER ADMINISTRATIVE CONTROLS
TO DETERMINE IF ADDITIONAL DESIGN
ISSUES EXIST
- INFORM OPERATORS OF EVENT AND
ENCOURAGE THEM TO QUESTION AND FULLY
UNDERSTAND OFF-NORMAL CONDITIONS
L.Deeo.18
,.
11\\ Corrective Actions And Safety Sign:i.ficance I
VIRGINIA POWER
M.R.KANSLER
SURRY STATION MANAGER
L.Oeeo.19
J
,,
Corrective Actions
I
- IMMEDIATELY PLACE CHARGING/HHSI PUMPS IN
COMPLETE
PROPER CONFIGURATION
- VERIFY THE UNIT 2 PUMP CONFIGURATION
COMPLETE
WAS SATISFACTORY
- ISSUE STATION DEVIATION REPORT
COMPLETE
- MAKE ONE-HOUR REPORT TO NRC
COMPLETE
- REQUEST ROOT CAUSE EVALUATION (RCE) FROM
COMPLETE
CORPORATE NUCLEAR SAFETY
- ISSUE A STANDING ORDER REQUIRING DEFEAT OF THE
COMPLETE
1A
1 PUMP UNDERVOLTAGE TRIP PENDING PERMANENT
PROCEDURE REVISION
t.Deeo.20
11\\
Corrective Actions (Continued)
- UPDATE THE MINIMUM EQUIPMENT LIST (MEL)
TO ADDRESS THE
1A
1 PUMP UNDERVOLTAGE
CONFIGURATION
- PLACE "CAUTION" TAG ON THE MAIN CONTROL
BOARDS
- REVISE APPLICABLE PROCEDURES WITH SRO
INVOLVEMENT
- CONDUCT MANAGEMENT BRIEFS WITH
OPERATING SHIFTS TO REVIEW THE EVENT AND
TO REINFORCE THE OPERATORS' "QUESTIONING
Al IHUDE"
- COACH MANAGEMENT PERSONNEL ON THE
. IMPORTANCE OF EFFECTIVE IMPLEMENTATION
AND COMMUNICATION OF CHANGES
- INTERIM MANAGEMENT REVIEW BOARD (MRB)
OVERSIGHT OF CHANGE ACTIVmEs
COMPLETE
COMPLETE
COMPLETE
COMPLETE
COMPLETE
ONGOING
I
L.Oeeo.21
- ~.
I ...
-:-----------,,
--"~
Planned Corrective Actions
_
- STRENGTHEN MANAGEMENT CONTROL OVER
CHANGE PROCESSES
- INITIATE STATION PLAN TO EVALUATE
CHANGE CONTROL PROCESS
- ENSURE CHANGE CONTROL IS INTEGRATED
INTO ROUTINE OPERATIONS
- REVIEW THE USE OF OTHER ADMINISTRATIVE
CONTROLS TO DETERMINE IF DESIGN ISSUES
EXIST
l.Oee0.22
r
I\\\\
Safety Significance
- THREE CHARGING PUMPS WERE AVAILABLE WITH
EMERGENCY POWER PROVIDED
- SIMULATOR VALIDATION SHOWS THAT OPERATORS
PROMPTLY (<15 SECONDS) DIAGNOSE AND RESTORE
CHARGING FLOW IN THE EVENT OF AN 'A' PUMP
LOCKOUT
- EOP IMMEDIATE ACTION STEPS COVER MANUAL START
OF CH/HHSI PUMPS
- APPENDIX K LOCA PEAK CLAD TEMPERATURE
REQUIREMENTS MET
- CURRENT SITE BOUNDARY DOSE AND CONTROL
ROOM HABITABILITY CALCULATIONS REMAIN
BOUNDING
- PROBABILITY OF DESIGN BASIS EVENT IS LOW (1.23 .. E-6)
I
LDe8o.23
I
1111111-------Conc-lu-sions-* -------,,
VIRBl/f/lA POWER
J.P. O'HANLON
VICE PRESIDENT-NUCLEAR OPERATIONS
L.Deeo.24
- j
111111,------eooc--1u-s-ions-------,I
- EVENT IDENTIFICATION/RESPONSE
- LICENSEE IDENTIFIED
- IMMEDIATELY NOTIFIED THE NRC UPON
IDENTIFICATION OF THE DISCREPANT CONDITION
- IMMEDIATELY RETURNED THE CHARGING PUMP
ALIGNMENT TO PROPER CONFIGURATION
- THOROUGH ROOT CAUSE EVALUATION PERFORMED
- TIMELY CORRECTIVE ACTIONS WERE IMPLEMENTED FOR
THE MAY 11, 1992 EVENT TO PREVENT RECURRENCE
- CORRECTIVE ACTIONS IMPLEMENTED IN RESPONSE TO *
THE AUGUST 21, 1991 EVENT WERE ADEQUATE AND
EFFECTIVE TO PREVENT RECURRENCE
LOell0.25
,,
Conclusions *
- DIFFERENT ROOT CAUSE THAN THE
AUGUST 21, 1991 EVENT
- ISOLATED EVENT
- MINIMAL SAFETY SIGNIFICANCE
I