ML062260187
| ML062260187 | |
| Person / Time | |
|---|---|
| Site: | Quad Cities  |
| Issue date: | 08/11/2006 |
| From: | Satorius M Division Reactor Projects III |
| To: | Crane C Exelon Generation Co, Exelon Nuclear |
| References | |
| EA-06-112 IR-06-014 | |
| Download: ML062260187 (4) | |
See also: IR 05000254/2006014
Text
August 11, 2006
Mr. Christopher M. Crane
President and Chief Nuclear Officer
Exelon Nuclear
Exelon Generation Company, LLC
Quad Cities Nuclear Power Station
4300 Winfield Road
Warrenville, IL 60555
SUBJECT:
ACKNOWLEDGMENT OF RESPONSE TO FINAL SIGNIFICANCE
DETERMINATION LETTER DATED JUNE 29, 2006, FOR A WHITE FINDING
AND NOTICE OF VIOLATION (NRC INSPECTION REPORT
NO. 05000254/2006014), QUAD CITIES NUCLEAR POWER STATION, UNIT 1
Dear Mr. Crane:
The NRC acknowledges the receipt of your letter dated July 27, 2006, in response to the White
finding and Notice of Violation transmitted in NRC inspection report 05000254/2006014. In
your letter, you concurred with the violation and provided a rationale for its occurrence. You
indicated that the cause of the violation was the failure to correct the long-standing source of
main steam line vibrations. A contributing factor was a failure to recognize the design
limitations of the electromatic relief valve actuator design at extended power uprate conditions.
Your letter provided information about acoustic side branch (ASB) modifications which you
implemented to reduce main steam line vibrations by addressing the source of the vibrations
and modifications to improve electromatic relief valve (ERV) actuator performance. Your letter
also discussed additional causal factors related to organizational effectiveness and actions you
plan to take to address this area.
We have reviewed your response and considered whether it is necessary for us to conduct a
supplemental inspection in accordance with Inspection Procedure 95001 as prescribed by the
Reactor Oversight Program in response to a single White finding, since many of the technical
details related to the White finding were already inspected during either the Degraded ERV
Special Inspection or activities surrounding the installation of the above modifications for the
ASBs and the ERVs. We have concluded that it is still appropriate for us to conduct the
IP 95001 inspection. Accordingly, we will be scheduling an IP 95001 Supplemental Inspection
following the completion of your planned corrective actions, described in your letter as
scheduled for the end of 2006.
C. Crane
-2-
If you have any questions regarding this letter, please contact Mr. Mark Ring, Chief, Reactor
Projects, Branch 1 at (630) 829-9703.
Sincerely,
/RA by Steve West Acting for/
Mark A. Satorius, Director
Division of Reactor Projects
Docket Nos. 50-254; 50-265;72-053
cc w/encl:
Site Vice President - Quad Cities Nuclear Power Station
Plant Manager - Quad Cities Nuclear Power Station
Regulatory Assurance Manager - Quad Cities Nuclear Power Station
Chief Operating Officer
Senior Vice President - Nuclear Services
Senior Vice President - Mid-West Regional
Operating Group
Vice President - Mid-West Operations Support
Vice President - Licensing and Regulatory Affairs
Director Licensing - Mid-West Regional
Operating Group
Manager Licensing - Dresden and Quad Cities
Senior Counsel, Nuclear, Mid-West Regional
Operating Group
Document Control Desk - Licensing
Vice President - Law and Regulatory Affairs
Mid American Energy Company
Assistant Attorney General
Illinois Emergency Management Agency
State Liaison Officer, State of Illinois
State Liaison Officer, State of Iowa
Chairman, Illinois Commerce Commission
D. Tubbs, Manager of Nuclear
MidAmerican Energy Company
C. Crane
-2-
If you have any questions regarding this letter, please contact Mr. Mark Ring, Chief, Reactor
Projects, Branch 1 at (630) 829-9703.
Sincerely,
/RA by Steve West Acting for/
Mark A. Satorius, Director
Division of Reactor Projects
Docket Nos. 50-254; 50-265;72-053
cc w/encl:
Site Vice President - Quad Cities Nuclear Power Station
Plant Manager - Quad Cities Nuclear Power Station
Regulatory Assurance Manager - Quad Cities Nuclear Power Station
Chief Operating Officer
Senior Vice President - Nuclear Services
Senior Vice President - Mid-West Regional
Operating Group
Vice President - Mid-West Operations Support
Vice President - Licensing and Regulatory Affairs
Director Licensing - Mid-West Regional
Operating Group
Manager Licensing - Dresden and Quad Cities
Senior Counsel, Nuclear, Mid-West Regional
Operating Group
Document Control Desk - Licensing
Vice President - Law and Regulatory Affairs
Mid American Energy Company
Assistant Attorney General
Illinois Emergency Management Agency
State Liaison Officer, State of Illinois
State Liaison Officer, State of Iowa
Chairman, Illinois Commerce Commission
D. Tubbs, Manager of Nuclear
MidAmerican Energy Company
DOCUMENT NAME:E:\\Filenet\\ML062260187.wpd
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To receive a copy of this document, indicate in the concurrence box "C" = Copy without attach/encl "E" = Copy with attach/encl "N" = No copy
OFFICE
RIII
E
RIII
RIII
RIII
NAME
MRing:sls
SWest for MSatorius
DATE
08/10/2006
08/11/2006
OFFICIAL RECORD COPY
C. Crane
-3-
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