ML20205T198
| ML20205T198 | |
| Person / Time | |
|---|---|
| Site: | Wolf Creek  |
| Issue date: | 04/03/1987 |
| From: | Gagliardo J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Withers B WOLF CREEK NUCLEAR OPERATING CORP. |
| References | |
| NUDOCS 8704070234 | |
| Download: ML20205T198 (9) | |
See also: IR 05000482/1987005
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APR 3
1987
In Reply Refer To:
Docket: STN 50-482
Wolf Creek Nuclear Operating Corporation
ATTN:
Bart D. Withers
President and Chief Executive Officer
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P. O. Box 411
Burlington, Kansas
66839
Gentlemen:
This refers to the Enforcement Conference conducted in the NRC Region IV office
on February 20, 1987, with you and other members of your staff and Region IV
staff members to discuss the findings of the NRC inspection conducted during
the period February 2-6, 1987, which were documented in our NRC Inspection
Report 50-482/87-05, dated February 13, 1987.
The subjects discussed at this meeting are described in the enclosed meeting
summary.
It is our opinion that this meeting was extremely beneficial and provided a
better understanding of the concerns identified during the inspection.
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.
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Should you have any questions concerning this inspection, we will be pleased to
aiscuss them with you.
Sincerely,
wael signea en
R. E. HAs.La
J. E. Gagliardo, Chief
Reactor Projects Branch'
Enclosure:
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Attachment - Meeting Summary
cc w/ enclosure:
Otto L. Maynard, Manager, Licensing
Wolf Creek Nuclear Operating C6rporation
P. O. Box 411.
Burli ngton~, . Kansas 66839
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Wolf Creek Nuclear Operating Corp.
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Gary Boyer, Plant Manager
Wolf Creek Nuclear Operating Corporation
P. O. Box 411
Burlington, Kansas 66839
Forrest Rhodes, Vice President,
Nuclear Operations
Wolf Creek Nuclear Operating Corporation
P. O. Box 411
Burlington, Kansas 66839
Kansas Radiation Control Program Director
bcc to DMB (IE01)
bec distrib. by RIV:
RPB
Myron Karman, ELD, MNBB (1)
RRI
R. D. Martin, RA
Section Chief (RPB/B)
DRSP
R&SPB
R. P. Warnick, RIII
RIV File
Resident Inspector, RIII
MIS System
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RSTS Operator
Project Inspector
D. Weiss, RM/ALF
R. Hall
D. Powers
E. J. Holler, IE
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ATTACHMENT
WOLF CREEK NUCLEAR OPERATING CORPORATION
FEBRUARY 20, 1987
MEETING SUMMARY
Licensee:
Wolf Creek Nuclear Operating Corporation (WCNOC)
Facility:
Wolf Creek Generating Station (WCGS)
License No.:
Docket No.:
50-482
Enforcement Conference Concerning)NRC Inspection
Subject:
Findings (NRC IR No. 50-482/87-05
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On February 20, 1987, representatives of Wolf Creek Nuclear Operating
Corporation, met in Arlington, Texas, with NRC Ragion IV and IE personnel to
discuss the findings documented in the NRC Inspection Report dated February 13,
1987. The attendance list and licensee presentation are attached. The meeting
was held at the request of NRC, Region IV.
The NRC discussed the concerns from the inspection, including the apparent
failure to satisfy Technical Specifications (TS) requirements when calculated
RCS flow rate indicated less than the minimum required by TS and the apparent
failure to follow established procedures following the discovery of the
calculated RCS flow rate by plant personnel. The licensee discussed the
concerns and stated that the RCS flow rate was not considered to be actually
less than TS minimum based on other indications, including the actual RCS flow
indication. Subsequently, the source of the error was determined to be due to
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miscalibration of feedwater flow transmitters.
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The licensee also discussed the actual sequence of events and the corrective
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actions taken to prevent the recurrence, including surveillance program controls
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and increased management involvement.
It was noted that even though the indicated and calculated RCS flow had
decreased since the previous cycle, the RCS flow was, in fact, above the
minimum required by the specification.
Enclosures
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Attendance List
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2.
WCNOC Presentation
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ENCLOSURE 1
ENFORCEMENT CONFERENCE ATTENDANCE LIST - REGION IV
WOLF CREEK NUCLEAR OPERATING CORPORATION
NRC Attendees:
R. D. Martin, Regional Administrator, RIV
E. H. Johnson, Director, Division of Reactor Safety and
Projects, RIV
J. E. Gagliardo, Chief, Reactor Projects Branch, RIV
D. R. Hunter, Chief, Reactor Project Section B, RIV
J. E. Cummir.s, Senior Resident Inspector, Wolf Creek
B. L. Bartlett, Resident Inspector, Wolf Creek
D. A. Powers, Enforcement Officer, RIV
E. J. Holler, Enforcement Specialist, IE-HQ
R. P. Mullikin, Project Inspector, Project Section B, RIV
Licensee Attendees:
B. D. Withers, President, WCNOC
F. T. Rhodes, Vice President, Nuclear Operations
0. L. Maynard, Manager, Licensing
G. D. Boyer, Plant Manager
B. McKinney, Superintendent, Technical Support
A. A. Freitag, Manager, Nuclear Plant Engineering
C. M. Estes, Superintendent of Operations
B. Goshorn, Wolf Creek Coordinator, KEPCo
M. Johnson, Nuclear Coordinator, KG&E
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Enclosure 2
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WOLF CREEK
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NUCLEAR OPERfJING CORPORATION
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IgrRODUCTION
Orto MAYNARD
CHRONOLOGY OF EVENTS
GARY BOYER
SURVEILLANCE PROGRAM
MIKE ESTES
CONCLUSIONS
FORREST RHODES
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CHRONOLOGY OF EVENTS
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TECHNICAL SPECIFICATION 3 2 3 REQUIREMENTS
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SURVEILLANCES THAT MONITOR T.S. 3 2 3
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- INSPECTION & CLEANING OF FEEDWATER VENTURI (18 M0)
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- CHANNEL CALIBRATION. OF RCS FLOW RATE INDICATORS (18 MD)
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- RCS FLOW & R VERIFIED TO BE IN ALLOWABLE REGION
IOR TO
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> 75% POWER AFTER EACH FUEL LOAD & ONCE PER 31 FF D
- INDICATED RCS FLOW IS VERIFIED ACCEPTABLE (EACH SHIFT)
- RCS FLOW IS DETERMINED BY PRECISION E AT BALANCE (18 MO)
JANUARY 14 - SURVEILLANCE
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- INDICATED FLOW 99% (T.S. LIMIT >.97%)
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- PRELIMINARY SURVEILLANCE RESULTS = 96 4%
- RESULTS CONSIDERED TO BE INVALID
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- TEST SUSPENDED
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TEST SUSPENSION
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- PROGRAM REQUIRES NOTIFICATION OF SS & SUPERVISOR
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- TEST PERFORMER NOTIFIED HIS MANAGEMENT Blfr NOT SS
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CORRECTIVE ACTIONS
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- IMPORTANCE OF NOTIFICATION REQUIREMENT DISCUSSED WITH GR0lPS
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- ADDED THE REQUIRMENT TO NOTIFY NRC RI
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JANUARY 15 - PRECISION HEAT BALANCE RESLMED WITH SIMILAR RESULTS
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- DATA CONSIDERED INVALID
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- EVALUATION PROCESS INCLUDED:
- CONSIDERATIONS OF REDUCED POWER LEVELS
- EVALUATION OF POTENTIAL CALORIMETRIC ERRORS
- LOOSE PARTS MONITCR AND CORE EXIT THERMOCOUPLES
- RCP PERFORMANCE
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- RCS FLOW INDICATION WAS BEING RELIED UPON TO MEET T S-
JANUARY 20 - HEAT BALANCE PERFORMED
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JANUARY 20 - REACTOR TRIP
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FEBRUARY 3 - FULL POWER ACHIEVED
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- MAINTAINED 96 - 98% POWER
FEBRUARY 4 - TEST PERFORMED 8 RCS FLOW DETERMINED TO BE 395473 gra
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FEBRUARY 5 - TEST PERFORMED & RCS FLOW DETERMINED TO BE 395792
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THROUGHOUT THIS EVALUATION PROCESS RCS FLOW INDICATIONS PROVIDED
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CLEAR INDICATIONS OF LC0 C0m LIANCE
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NUCLEAR OPERATING
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THE FINAL ISSUE:
1.
The Overall Surveillance Program Visibility and Controls.
2.
Increased Management Involvement
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