ML20138D520
| ML20138D520 | |
| Person / Time | |
|---|---|
| Site: | Byron  |
| Issue date: | 04/23/1997 |
| From: | Caldwell J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Graesser K COMMONWEALTH EDISON CO. |
| Shared Package | |
| ML20138D524 | List: |
| References | |
| EA-97-178, NUDOCS 9705010145 | |
| Download: ML20138D520 (4) | |
See also: IR 05000454/1997002
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April 23, 1997
EA 97-178
Mr. K. Graesser
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Site Vice President
Byron Station
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Commonwealth Edison Company
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4450 N. German Church Road
Byron, IL 61010
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SUBJECT:
NRC INSPECTION REPORT 50-454/97002(DRP): 50-455/97002(DRP)
Dear Mr. Graesser:
On March 13,1997, the NRC completed an inspection at your Byron Unit 1 & 2 reactor
facilities. The enclosed report presents the inspection results.
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During the inspection period, the inspectors observed excellent operator performance
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during the Unit 1 shutdown and startup. Senior licensed operators demonstrated strong
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command and control during all reactivity changes. However, based on a radwaste tank
overpressurization event, we are concerned about conflicting operating standards that
appear to exist between non-licensed radwaste operators and licensed operators.
Your evaluation of the 1 A residual heat removal (RH) pump seal failure that occurred on
February 15,1997, identified that improperly installed thrust bearings rendered both the
1 A RH and 1B containment spray (CS) pumps inoperable since the 1985/1986 timeframe.
Your engineering performance in the failed seal investigation and cause determination was
considered timely and comprehensive.
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Performance of observed maintenance activities during the period were mixed. Routine
surveillance and maintenance activities were well performed; however, observed activities
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that were not routine were poorly executed. Significant rework was performed on the
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Unit 1 RH and CS pumps due to foreign materialintrusion and inadequate pump
reassembly, and a Unit 2 pressurizer power operated relief valve (PORV) momentarily lifted
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due to an inadequate troubleshooting procedure. Based on the performance demonstrated
during this inspection period, we are concerned with your ability to conduct maintenance
without rework.
As a result of the above issues, five violations are cited in the enclosed Notice of Violation,
and the circumstances surrounding the violations are described in detail in the enclosed
report. Please note that you are required to respond to this letter and should follow the
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9705010145 970423
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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
and its enclosure (s) will be placed in the NRC Public Document Room (PDR).
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Sincerely,
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/s/ J. A. Grobe for
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James L. Caldwell, Director
Division of Reactor Projects
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Docket Nos. 50-454; 50-455
License Nos. NPF-37: NPF-66
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Enclosures:
2. Inspection Report 50-454/455-97002(DRP)
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PLEASE SEE ATTACHED CONCURRENCES
DOCUMENT NAME: R:\\lNSPRPTS\\ POWERS \\BYRO\\BYR97002.DRP
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OFFICIAL. RECORD COPY
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As a result, five violations are cited in the enclosed Notice of Violation, and the
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circumstances surrounding the violations are described in detail in the enclosed report.
Please note that 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.
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In accordance with 10 CFR 2.790 of the NRC's " Rules of Practice," a copy of this letter
.
and its enclosure (s) will be placed in the NRC Public Document Room (PDR).
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Sincerely,
James L. Caldwell, Director
Division of Reactor Projects
Docket Nos. 50-454; 50-455
Enclosures:
2. Inspection Report 50-454/455-97002(DRP)
PLEASE SEE ATTACHED CONCURRENCES
DOCUMENT NAME: R:\\l N S PR PT S\\ POW E R S\\BYR O\\BYR 97002. D R P
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DATE
04/4/97
04&l/97
04/ /97
04/ /97
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OFFICIAL RECORD COPY
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K. Graesser
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cc w/ encl: T. J. Maiman, Senior Vice President
Nuclear Operations Division
D. A. Sager, Vice President,
Generation Support
H. W. Keiser, Chief Nuclear
Operating Officer
K. Kofron, Station Manager
D. Brindle, Regulatory Assurance
Supervisor
1. Johnson, Acting Nuclear
Regulatory Services Manager
Richard Hubbard
Nathan Schloss, Economist
Office of the Attorney General
State Liaison Officer, Wisconsin
State Liaison Officer
Chairman, lilinois Commerce Commission
Document Control Desk-Licensing
Distribution:
Docket File w/enci
OC/LFDCB w/ encl
DRP w/enct
SRI Byron, Braidwood, Zion w/ encl
PUBLIC IE-01 w/enct
Project Manager, NRR w/enci
CAA1 w/enci(E-mail)
A. B. Beach, w/ encl
RAC1 (E-Mail) w/enci
Rlli Enf. Coordinator, w/enci
Deputy RA, w/enci
Rlli PRR w/enci
DRS (2) w/ encl
TSS w/enci
J. Lieberman, OE w/ encl
J. Goldberg, OGC w/enct
R. Zimmerman, NRR w/enci