ML20210A315
ML20210A315 | |
Person / Time | |
---|---|
Site: | Byron ![]() |
Issue date: | 07/16/1999 |
From: | Jordan M NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
To: | Kingsley O COMMONWEALTH EDISON CO. |
Shared Package | |
ML20210A319 | List: |
References | |
50-454-99-08, 50-454-99-8, 50-455-99-08, 50-455-99-8, NUDOCS 9907220064 | |
Download: ML20210A315 (3) | |
See also: IR 05000454/1999008
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UNITED STATES
NUCt. EAR REGULATORY COMMISSION
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801 WARRENVILLE ROAD
LISLE, ILLINOIS 60532-4351
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July 16,1999
Mr. Oliver D. Kingsley
President, Nuclear Generation Group
Commonwealth Edison Company
ATTN: Regulatory Services -
Executivs Towers West lit
1400 Opus Place, Suite 500
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Downers Grove,IL 60515
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SUBJECT:
BYRON INSPECTION REPORT 50-454/99008(DRP); 50-455/99008(DRP)
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Dear Mr. Kingsley:
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On June 21,1999, the NRC completed an inspection at the Byron 1 and 2 reactor facilities.
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The enclosed report presents the results of that inspection.
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During this inspection period, control room operations were conducted in a safe, professional,
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and controlled manner. We observed that your operators' response to the Unit 1 automatic reactor trip from full power was excellent. The operators effectively controlled and stabilized
plant parameters'and all plant safety-related systems operated as designed. The shift manager
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and unit supervisor demonstrated strong command and control throughout the event.
Throughout this inspection period, we observed that operators generally adhered to the
station's standards for control room conduct, procedural adherence, annunciator response, and
use of three-way communications.
We note eat human performance errors at Byron Station continue, and while we recognize that
you have hnplemented corrective actions to address these human performance issues over the
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past year, those actions have not yet been fully effective. On May 13,1999, Unit 1 experienced
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an automatic reactor trip from full power when an instrument maintenance technician, while
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performing a calibration test, incorrectly removed instrument power fuses from a power range
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nuclear instrument. We noted that following this event, you conducted a " stand down" of
maintenance work activities to discuss the event and to reinforce the importance of performing
error reduction techniques.
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We have also observed that your process for engineering design modifications has not been
consistently implemented. In recent inspection reports, we identified examples where operators
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were not properly trained and procedures were not appropriately revised following the
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installation of plant systems modifications. During this inspection period, we identified three
examples wherein testing requirements were not incorporated into modification work request
instructions, and the post-modification testing requirements were either not completed or test
completion was not appropriately documented.
9907220064 990716'
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ADOCK 05000454
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O. Kingsley
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Based on the results of this inspection, the NRC has determined that three violation's of NRC
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requirements occurred. These violations are being treated as Non-Cited Violations (NCVs),
consistent with Appendix C of the Enforcement Policy. These NCVs are described in the
subject inspection report. If you contest the violation or severity level of these NCVs, you
should provide a response within 30 days of the date of this inspection report, with the basis for
your denial, to the Nuclear Regulatory Commission, ATTN: Document Control Desk,
Washington DC 20555-0001, with copies to the Regional Administrator, Region lil, and the
Director, Offico of Enforcement, United States Nuclear Regulatory Commission, Washington,
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DC 20555-0001.
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In accordance with 10 CFR 2.790 of the NRC's " Rules of Practice," a copy of this letter, its
enclosure, and your response, if you choose to provide one, will be placed in the NRC Public
Document Room.
We will gladly discuss any questions you have conceming this inspection.
Sincerely,
/s/ M. J. Jordan
Michael J. Jordan, Chief
Reactor Projects Branch 3
Docket Nos. 50-454; 50-455
Enclosure:
Inspection Report 50-454/99008(DRP);
50-455/99008(DRP)
cc w/ encl:
D. Helwig, Senior Vice President
H. Stanley, PWR Vice President
C. Crane, BWR Vice President
-
R. Krich, Vice President, Regulatory Services
DCD - Licensing
W. Levis, Site Vice President
R. Lopriore, Station Manager
B. Adams, Regulatory Assurance Manager
M. Aguilar, Assistant Attorney General
State Liaison Officer
State Liaison Officer, State of Wisconsin
,
Chairman, Illinois Commerce Commission
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DOCUMENT NAME: G:\\BYRO\\BYR99008.DRP
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To receive a co py of this document , Indicate in the boxj *C" = Cop 9 w/o attach /end *E's Copy w/ attach /enci "N" = No copy
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OFFICIAL RECORD COPY
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O. Kingsley
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Distribution:
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COT (E-Mail)
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RPC (E-Mail)
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Project Mgr., NRR w/ encl
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J. Caldwell, Rlil w/ encl
B. Clayton, Rllt w/enci
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SRI Byron w/enci
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DRS w/enci
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Rlli PRR w/enci
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PUBLIC IE-01 w/enci
Docket File w/enci
GREENS
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DOCDESK (E-Mail) -
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