ML030370253

E-mail from T Alexion to s Benne at ANO-2 Regarding Steam Generator (SG) Tube Inspection Frequency

ML030370253
Person / Time
Site:	Arkansas Nuclear
Issue date:	01/22/2003
From:	Alexion T NRC/NRR/DLPM/LPD4
To:	Benne S Entergy Nuclear Operations
Alexion T W,NRR/DLPM,415-1326
Shared Package
ML030420086	List: ML030370171 ML030370172 ML030370238 ML030370243 ML030370253 ML030370275 ML030370298
References
Download: ML030370253 (3)

Text

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evir- - PAI C)M Ar, TUBE INSPECTION FREQUENr'v From: Thomas Alexion To: SBENNE2@entergy.com Date: 1/22/03 2:23PM

Subject:

RAI ON SG TUBE INSPECTION FREQUENCY Steve, See the attached.

Tom

REQUEST FOR ADDITIONAL INFORMATION REQUEST TO MODIFY STEAM GENERATOR (SG) TUBE INSPECTION FREQUENCY ARKANSAS NUCLEAR ONE, UNIT 2 (ANO-2)

1. The licensee located and removed a loose part approximately 12 inches above the cold leg tubesheet in the "B" SG. Were any loose parts left in service? If so, summarize the basis, including any analysis performed, for the conclusion that these loose parts will not cause unacceptable wear before the next scheduled inspection (2R1 7)?

2. Table I of the November 22, 2002, letter indicates that 271 special interest inspections were conducted. Please describe the results of these inspections. (The staff assumes that some of the results in Table 2 arose from the special interest inspections; however, a one-to-one comparison cannot be made.)

3. The licensee indicates that SGs such as those at DC Cook, Farley, and South Texas have not experienced large amounts of wear. The licensee also indicates that these SGs are similar in design to the ANO-2 SGs.

a. Provide details explaining the similarities and differences between the ANO-2 SGs and the SGs at the referenced plants.

b. What process is in place to gain relevant industry operating experience that may affect the operational assessment of ANO-2 during the proposed extended inspection interval?

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Subject:

RAI ON SG TUBE INSPECTION FREQUENCY Creation Date: 1/22/03 2:23PM From: Thomas Alexion Created By: TWA@nrc.gov Recipients Action Date & Time entergy.com Transferred 01/22/03 02:23PM SBENNE2 (SBENNE2 @entergy.com)

Post Office Delivered Route entergy.com Files Size Date & Time MB6808RAI.wpd 5891 01/22/03 02:18PM MESSAGE 657 01/22/03 02:23PM Options Auto Delete: No Expiration Date: None Notify Recipients: Yes Priority: Standard Reply Requested: No Return Notification: None Concealed

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