ML20197E968
| ML20197E968 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 12/19/1997 |
| From: | Grant G NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Jamila Perry COMMONWEALTH EDISON CO. |
| Shared Package | |
| ML20197E973 | List: |
| References | |
| 50-010-97-24, 50-10-97-24, 50-237-97-24, 50-249-97-24, NUDOCS 9712300112 | |
| Download: ML20197E968 (2) | |
See also: IR 05000010/1997024
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UNITED STATES
NUCLEAR RECULATORY COMMISSION
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B01 WARRENVME ROAD
US'.t. lLUNOIS tow 4%1
December 19, 1997
Mr. J. S. Peny
Site Vice Presidsnt
Dresden Station
Commonwealth Edison Company
6500 North Dresden Road
Morris,IL 60450
SUBJECT:
NRC INSPECTION REPORT NO. 50-010/97024(DRP); 50-237/97024(DRP);
50 249/97024(DRP) AND NOTICE OF VIOLATION
Desr Mr. Perry:
This refers to the inspection conducted from October 16,1997, to November 22,1997, at the
Dresden facility. The purpose of the inspection was to determine whether activities authorized by
the license were conducted safely and in accordance with NRC requirements. During this period,
routine resident inspections, augmented with resident staff from other sites and the region, were
performed. The enclosed report presents the results of these inspections.
Overall, the plant operations were safe. However, plant material condition and maintenance
activities continued to challengo your operators. On November 18, work performed by your staff
caused a level transient event on Unit 2 because of review of the impact of the work. The NRC
was particularly concemed by the event because of the similarities between the causes of the
event and the causes of the level transient of May of 1996.
The material condition of the feedwater system contributed to the reactor pressure vessellevel
transient on Unit 2. The material condition of the feedwater heaters and ventilation also
challenged operations. The material condition of the reactor pressure boundary required a
shutdown to repair. Other material condition problems caused unplanned outage time for
Technical Specifications (TSs) related equipment.
Based on the results of this inspection, the NRC has determined that violations of NRC
requirements occurred. Tht, stendby liquid control system was inoperable for more time than
allowed by TSs. Operators missed an opportunity to recognize this when they incorrectly
assumed that a valid alarm was invalid. The violation is cited in the enclosed Notice of Violation
(Notice) and the circumstances surrounding the violation are described in detail in the subject
inspection report.
The inspectors also identified a violation for two instances of operations failing to complete all
actions required by the annunciator procedures. However, a violation was not issued because
corrective actions for a similar violation issued in Inspection Report No. 97019(DRP) would be
expected to encompass this violation and are not yet complete. Further, the work instructions
that caused the Unit 2 feedwater transient were inadequate and in violation of NRC
requirements. Again, however, a violation was not issued because the corrective actions to a
similar violation issued in inspection Report No. 97019(DRP) would be expected to encompass
this violation as well.
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S. Perry
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You are required to respond to this letter and should follow the instructions specified in the
enclosed Notice when preparing your response. The NRC will use your response, in part, to
determine whether further enforcement action is necessary to ensure compliance with regulatory
requirements.
in accordance with 10 CFR 2.790 of the NRC's " Rules of Practice," a copy of this letter, its
enclosures, and your response will be placed in the NRC Public Document Room.
Sincerely,
/s/ G. E. Grant
Geoffrey E. Grant, Director
Division of Reactor Projects
Docket Nos.50-010;50 237; 50 249
License Nos. DPR 02; DPR 19; DPR 25
Enclosures:
1.
2
Inspection Report
No. 50-010/97024(DRP);
50-237/97024(DRP);
50-249/97024(DRP)
cc w/encts:
O. Kingsley, Nuclear Generation Group
Distributio0:
President and Chief Nuclear Officer
Docket File w/enci
M. Wal! ace, Senior Vice
PUBLIC IE 01 w/ encl
President, Corporate Services
A. Beach w/ encl
E. Kraft, Vice President
Deputy RA w/enct
BWR Operations
Rill Enf. Coord, w/enci
SRI Dresden w/enci
D. A. Sager, Vice President,
Generation Support
DRP w/enci
D. Farrar, Nuclear Regulatory
TSS w/ encl
Services Manager
DRS (2) w/ encl
I. Johnson, Licensing
Rlli PRR w/enci
Operations Manager
RAC1 (E-Mail)
Document Control Desk Licensing
CAA1 (E Mall)
T. Nauman, Station Manager Unit 1
DOCDESK (E-Mail)
M. Heffley, Station Manager Units 2 and 3
F. Spangenberg, Regulatory Assurance
Manager
Richard Hubbard
Nathan Schloss, Economist
'3000 FJ
Office of the Attomey General
State Liaison Officer
Chairman, Illinois Commerce
Commission
DOCUMENT NAME: RORES\\DRE9702tDRP
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DATE
12/M/97
12/15/97
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OFFICIAL RECORD COPY