ML103020249

Email, Request for Additional Information 2010 Steam Generator Tube Inspections Performed During Spring (March) 2010 Refueling Outage (1R22)

ML103020249
Person / Time
Site:	Arkansas Nuclear
Issue date:	10/29/2010
From:	Kalyanam N Plant Licensing Branch IV
To:	David Bice, Clark R Entergy Operations
Kalyanam N, NRR/DORL/LPL4, 415-1480
References
TAC ME4503
Download: ML103020249 (1)

Text

From: Kalyanam, Kaly Sent: Friday, October 29, 2010 11:36 AM To: BICE, DAVID B; CLARK, ROBERT W Cc: Lent, Susan; Burkhardt, Janet

Subject:

Request for Addional Information (TAC No. ME4503)

Plant: Arkansas Nuclear One, Unit 1 Docket No.: 50-313

Subject:

Request for Additional Information Regarding the 2010 Steam Generators Tube Inspections (TAC No. ME4503)

TAC Nos.: ME4503 SUNSI Review Done: Yes. Publicly Available, Normal Release, Non-sensitive, From: N. Kalyanam To: D. Bice/R. Clark

Dave, By letter dated July 29, 2010 (Agencywide Documents Access and Management System (ADAMS) Accession Number ML102250418), Entergy Operations, Inc (the licensee) submitted information pertaining to the 2010 steam generator tube inspections performed at Arkansas Nuclear One Unit 1. In addition, the licensee and the Nuclear Regulatory Commission staff held a conference call on March 29, 2010 which is summarized in letter dated April 12, 2010 (ADAMS Accession Number ML100960402).

The Nuclear Regulatory Commission Staff reviewed the information provided and has determined that additional information is required to complete the review. The Request for Additional Information follows below.

The staff requests you to provide the response to the request within 30 days of the receipt of this request. If this schedule cannot be met, please inform us as soon as possible.

Thanks Kaly REQUEST FOR ADDITIONAL INFORMATION 2010 STEAM GENERATOR TUBE INSPECTION REPORT ARKANSAS NUCLEAR ONE UNIT 1 DOCKET NUMBER 50-313

1. Page 1 of the letter dated July 29, 2010, states that The operating period for this report includes one refueling inspection outage (1R22), in March 2010, a non In-Service

Inspection (ISI) and that this was a non American Society of Mechanical Engineering Boiler Pressure Vessel Code (ASME Code) type inspection. Please clarify and confirm that your technical specification requirements pertaining to steam generator tube inspections (TS 5.5.9) were followed and that the applicable ASME Code requirements pertaining to the performance of inspections were followed.

2. On Table 3.7.1 on page 6 of the letter dated July 29, 2010, shows that some values of bowing were Not Determinable. Please clarify what is meant by Not Determinable.

3. On page 8 of the letter dated July 29, 2010, please clarify whether the 95th Percentile values for growth are based on 1RF22 or previous outage data (i.e., is Table 3.7.1 the previous operational assessment or the current operational assessment). Additionally, growth rates are in terms of %TW/effective full power year (EFPY) as indicated on page 9. Discuss why the growth rates were not multiplied by the cycle length (in EFPY).

4. Table 3.3.1 indicated that the site specific review for sizing with the X-probe was deemed unacceptable. Please clarify. Is this simply indicating that you were unable to qualify the X-probe for sizing indications at ANO-1?

E-mail Properties Mail Envelope Properties (94A2A4408AC65F42AC084527534CF4161A339530CD)

Subject:

Request for Addional Information (TAC No. ME4503)

Sent Date: 10/29/2010 11:36:15 AM Received Date: 10/29/2010 11:36:15 AM From: Kalyanam, Kaly Created By: Kaly.Kalyanam@nrc.gov Recipients:

DBICE@entergy.com (BICE, DAVID B)

Tracking Status: None RCLARK@entergy.com (CLARK, ROBERT W)

Tracking Status: None Susan.Lent@nrc.gov (Lent, Susan)

Tracking Status: None Janet.Burkhardt@nrc.gov (Burkhardt, Janet)

Tracking Status: None Post Office:

HQCLSTR01.nrc.gov Files Size Date & Time

MESSAGE 15047 10/29/2010 Options Expiration Date:

Priority: olImportanceNormal ReplyRequested: False Return Notification: False Sensitivity: olNormal Recipients received: