ML031420335
| ML031420335 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point, Perry, Fermi, Grand Gulf, Limerick, River Bend, Clinton  |
| Issue date: | 04/30/2003 |
| From: | Post J General Electric Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| EN 39806, MFN 03-030, Rev.1 | |
| Download: ML031420335 (3) | |
Text
GE Nuclear Energy General Electrc Company 175 CurtnerAve., San Jose, CA 95125 April 30,2003 MFN 03-030 Rev 1 Document Control Desk United States Nuclear Regulatory Commission One White Flint North 11555 Rockville Pike Rockville, Maryland 20852-2738
Subject:
Interim Surveillance Program for Fuel Channel Bow Monitoring
Reference:
Letter from Jason Post (GENE) to USNRC, "Part 21 Notification: Fuel Channel Bow Reportable Condition and 60-Day Interim Notification",
MFN 03-012, March 3,2003 MFN 03-030 Revision I corrects the plants identified in Attachment I as recommended for the surveillance program. There are no changes to the proprietary information in Attachments 2 and 3 so the affidavit enclosed with MFN 03-030, April 28, 2003, is still valid.
The reference letter provided notification by GE Nuclear Energy (GENE) in accordance with OCFR21.21(a)(1) of a Reportable Condition for thermal limits calculations for BWR/6 plants with Global Nuclear Fuel (GNF) Zr-2 thick/thin fuel channels and a 60-Day Interim Notification in accordance with §(a)(2) for two issues, (1) thermal limits calculations for non-BWR/6 plants with the same fuel channels (to be completed by June 6, 2003), and (2) control rod-fuel channel interference for both BWR/6 and non-BWR/6 plants with the same fuel channels (to be completed by April 28, 2003). With respect to the control rod-fuel channel interference, the reference letter contained a commitment to provide interim recommendations for surveillance actions to detect control rod-fuel channel interference and determine when the friction associated with the interference is sufficient to cause a concern with control rod insertion, fuel bundle lift or loads on reactor internals.
The control rod-fuel channel interference evaluation has been completed. It determined that BWRI6 and BWR/4 & 5 C-lattice plants with GNF thick/thin channels potentially have increased channel bow that can impact fuel bundle lift, loads on reactor internals, and control rod operability. An interim surveillance program has been developed to augment the surveillance requirements in the plant Technical Specifications until other actions, which mitigate or limit the potential for control rod-channel interference due to channel bow can be identified and implemented. The recommendations address the 1
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April 30, 2003 MFN 03-030 Rev 1 extent and frequency of surveillance actions, and the plants to which they should be applied. This surveillance program provides early indication of potentially degraded operational performance and assurance that action is taken before reaching excessive levels of control rod friction. This surveillance plan is limited to BWR/6 and BWR/4&5 C-lattice plants with GNF thick/thin channels and GE control rods. There have been no indications of operational or scram problems on BWR/2, 3 and 4 D-lattice plants, and as a result, they are excluded from the interim surveillance program.
This transmittal contains GE-NE proprietary information, which GE-NE customarily maintains in confidence and withholds from public disclosure.
The enclosed affidavit identifies that the designated information has been handled and classified as proprietary to GE-NE. Along with the affidavit this information is suitable for review by the NRC. GE-NE hereby requests that the designated information be withheld from public disclosure in accordance with the provisions of 10 CFR 2.790 and 9.17.
Please contact me if you have any questions on this information at (408) 925-5362.
Sincerely, Jason. S. Post, Manager Engineering Quality and Safety Evaluations Attachments:
- 1. Plants Recommended for Surveillance Program
- 2. Interim Surveillance Plan for GNF Thick/Thin Channel Bow Monitoring for BWR16 Plants
- 3. Interim Surveillance Plan for GNF Thick/Thin Channel Bow Monitoring for BWRJ4 and 5 C-Lattice Plants
- 4. Affidavit, James F. Klapproth, dated April 28, 2003 cc: S. D. Alexander (NRC-NRRJDISP/PSIB) Mail Stop 6 F2 J. F. Foster (NRC-NRR/DRIP/RORP) Mail Stop 12 H2 A. B. Wang (NRC-NRR/DLPM/LPD4) Mail Stop 7 El J. F. Klapproth (GENE)
H. J. Neems (GENE)
B. J. Erbes (GENE)
PRC File 2
MFN 03-030 Rev I April 2003 Plants Recommended for Surveillance Program ATTACHMENT 1 Utility X
AmerGen Energy Co.
AmerGen Energy Co.
Carolina Power & Light Co.
Carolina Power & Light Co.
Constellation Nuclear X
Constellation Nuclear.
X Detroit Edison Co.
Dominion Generation Energy Northwest Entergy Nuclear Northeast Entergy Nuclear Northeast X
Entergy Operations, Inc.
X Entergy Operations, Inc.
Entergy Nuclear Northeast Exelon Generation Co.
Exelon Generation Co.
Exelon Generation Co.
Exelon Generation Co.
Exelon Generation Co.
X Exelon Generation Co.
X Exelon Generation Co.
Exelon Generation Co.
Exelon Generation Co.
Exelon Generation Co.
Exelon Generation Co.
X FirstEnergy Nuclear Operating Co.
Nebraska Public Power District Nuclear Management Co.
Nuclear Management Co.
Pooled Equipment Inventory Co.
PPL Susquehanna LLC Public Service Electric & Gas Co.
Southern Nuclear Operating Co.
Southern Nuclear Operating Co.
Tennessee Valley Authority Tennessee Valley Authority Tennessee Valley Authority Plant Clinton Oyster Creek Brunswick 1 Brunswick 2 Nine Mile Point I Nine Mile Point 2 Fermi 2 Millstone 1 Columbia FitzPatrick Pilgrim Grand Gulf River Bend Vermont Yankee CRIT Facility Dresden 2 Dresden 3 LaSalle 1 LaSalle 2 Limerick I Limerick 2 Peach Bottom 2 Peach Bottom 3 Quad Cities 1 Quad Cities 2 Perry 1 Cooper Duane Arnold Monticello PIM Susquehanna l i Susquehanna2 Hope CTeek Hatch I Hatch 2 Browns Ferry 1 Browns Ferry 2 Browns Ferry 3
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