ML012910420

Clarification of Leakage Inspection (Tac No. MB1065)

ML012910420
Person / Time
Site:	Oyster Creek
Issue date:	01/08/2002
From:	Pastis H NRC/NRR/DLPM/LPD1
To:	Kingsley O Exelon Generation Co, Exelon Nuclear
Pastis H, NRR/DLPM, 415-1261
References
TAC MB1065
Download: ML012910420 (5)

Text

January 8, 2002 Mr. Oliver D. Kingsley, President and Chief Nuclear Officer Exelon Nuclear Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555

SUBJECT:

OYSTER CREEK NUCLEAR GENERATING STATION - CLARIFICATION OF LEAKAGE INSPECTION (TAC NO. MB1065)

Dear Mr. Kingsley:

On November 10, 2000, AmerGen Energy Company, LLC (AmerGen) requested the U.S.

Nuclear Regulatory Commission (NRC) approval of an alternative repair to two leaking control rod drive (CRD) housings. This request was based on the guidance contained in the BWRVIP-17 report, Roll/Expansion Repair of Control Rod Drive and In-Core Instrumentation Penetrations in BWR Vessels. Although this report has not been approved for generic use by the Boiling Water Reactor (BWR) licensees, it has been used as a basis of plant-specific repairs. On November 16, 2000, the NRC staff approved this request.

By letter dated January 19, 2001, AmerGen clarified the conditions under which the leakage inspections for the control rod drive (CRD) housings will be initiated and what limits should apply. Part of the alternative repair was to follow page 7 in the section entitled, Penetration Leakage Acceptance Limits contained in the BWRVIP-17 report.

The CRD housing leakage limits specified in BWRVIP-17 are dependent upon the length of the outage when the leakage inspections are performed. Certain leakage limits apply when the outage is less than 7 days (Table 2-3). Other leakage limits apply when the outage is greater than 7 days (Table 2-4). Because the tables do not address what limits should apply if the outage is planned for a nominal duration of 7 days, AmerGen will apply the leakage limits of Table 2-3 if the planned outage duration is 7 days or less. The heading on Table 2-3 in BWRVIP-17 refers to leakage limits for inspections during forced outages of less than 7 days.

AmerGen believes that the leakage limits in Table 2-3 should apply to inspections during outages of opportunity of 7 days or less whether they are scheduled or forced. Also, the leakage limits of Table 2-3 would still remain applicable if a scheduled or forced outage is initially planned for 7 days or less and is subsequently extended due to unforseen or emerging circumstances.

AmerGen intends to perform the CRD housing leakage inspection only if there is a need to enter the drywell during a planned or forced outage regardless of expected outage length, in order to reduce occupational dose.

O. D. Kingsley The NRC staff has reviewed these notes of clarification and believes that they meet the intent of the BWRVIP-17 guidance. Therefore, the NRC staff has no objection to these points of clarification.

Sincerely,

/RA/

Helen N. Pastis, Senior Project Manager, Section 1 Project Directorate I Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-219 cc: See next page

ML012910420 OFFICE PD1-1/PM PD1-1/SL BC:EMCB OGC PD1-1 (A)

NAME HPastis:as SLittle WBateman AHodgdon LRaghavan DATE 11/7/01 11/5/01 12/17/2001 12/27/2001 1/8/02 Oyster Creek Nuclear Generating Station cc:

John Skolds Kent Tosch, Chief Chief Operating Officer New Jersey Department of Exelon Generation Company, LLC Environmental Protection 4300 Winfield Road Bureau of Nuclear Engineering Warrenville, IL 60555 CN 415 Trenton, NJ 08625 William Bohkle Senior Vice President Nuclear Services Michael P. Gallagher Exelon Generation Company, LLC Director - Licensing 4300 Winfield Road Exelon Generation Company, LLC Warrenville, IL 60555 Correspondence Control Desk P.O. Box 160 John B. Cotton Kennett Square, PA 19348 Senior Vice President - Operations Support Exelon Generation Company, LLC Ernest J. Harkness 4300 Winfield Road Plant Manager Warrenville, IL 60555 Oyster Creek Nuclear Generating Station AmerGen Energy Company, LLC Joseph J. Hagan P.O. Box 388 Senior Vice President - Forked River, NJ 08731 Mid Atlantic Regional Operating Group Exelon Generation Company, LLC Kevin P. Gallen, Esquire 200 Exelon Way, Suite 305 Morgan, Lewis & Bockius LLP Kennett Square, PA 19348 1800 M Street, NW Washington, DC 20036-5869 Jeffrey A. Benjamin Vice President - Manager Regulatory Assurance Licensing and Regulatory Affairs Oyster Creek Nuclear Generating Station Exelon Generation Company, LLC AmerGen Energy Company, LLC 4300 Winfield Road P.O. Box 388 Warrenville, IL 60555 Forked River, NJ 08731 Ron J. DeGregorio Edward J. Cullen, Jr., Esquire Vice President Vice President, General Counsel and Oyster Creek Nuclear Generating Station Secretary AmerGen Energy Company, LLC Exelon Generation Company, LLC P.O. Box 388 300 Exelon Way Forked River, NJ 08731 Kennett Square, PA 19348 H. J. Miller J. Rogge, Region I Regional Administrator, Region I U. S. Nuclear Regulatory Commission U.S. Nuclear Regulatory Commission 475 Allendale Road 475 Allendale Road King of Prussia, PA 19406-1415 King of Prussia, PA 19406-1415 Mayor Lacey Township 818 West Lacey Road Forked River, NJ 08731 Senior Resident Inspector (Oyster Creek)

U.S. Nuclear Regulatory Commission P.O. Box 445 Forked River, NJ 08731