ML15069A115
| ML15069A115 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 03/10/2015 |
| From: | Balwant Singal Plant Licensing Branch IV |
| To: | Weber T Arizona Public Service Co |
| References | |
| TAC MF5053 | |
| Download: ML15069A115 (2) | |
Text
1 NRR-PMDAPEm Resource From:
Singal, Balwant Sent:
Tuesday, March 10, 2015 10:11 AM To:
Thomas.N.Weber@aps.com' (Thomas.N.Weber@aps.com)'
Cc:
Watford, Margaret
Subject:
Request fro Additional Information - Palo Verde Nuclear Generating Station, Unit 2 Steam Generator Tube Inspections - TAC MF5053
- Tom, By letter dated October 10, 2014 (Agencywide Documents Access and Management System (ADAMS)
Accession No. ML14288A371), Arizona Public Service Company (the licensee) submitted information summarizing the results of the Spring 2014 steam generator tube inspections performed at Palo Verde Nuclear Generating Station, Unit 2. These inspections were performed during refueling outage 18 (RFO18). In a letter dated June 2, 2014 (ADAMS Accession No. ML14150A177),
the U.S. Nuclear Regulatory Commission (NRC) staff summarized a conference call that was held with the licensee during RFO 18 In order to complete its review, the NRC staff requests the following additional information:
- 1. For each operating cycle since steam generator replacement in 2003, please provide the effective full power months (EFPM) accrued, and the cumulative EFPM as of RFO18.
- 2. In the section labeled Upper Internals Inspection Summary on pages 7 and 8, the phrases no anomalies were noted and no anomalous conditions were noted are used when discussing various sections of the upper internals. Please discuss whether any degradation was noted during these inspections. Similarly, please clarify whether any degradation was observed during the channel head and plug inspections.
- 3. Table 2 provides the number of tubes and number of indications detected. Please clarify the number of tubes and the number of indications (regardless of depth) with wear in the U-bend region (batwings and vertical straps) and at the horizontal (straight span) tube supports.
Draft request for additional information (RAI) was sent via e-mail on February 25, 2015 and you confirmed on March 6, 2015 that a clarification call is not needed. You are requested to respond to this request within 30 days. Please treat this e-mail as formal transmittal of RAI.
Thanks.
Balwant K. Singal Senior Project Manager, Comanche Peak, STP, Palo Verde, and Diablo Canyon Balwant.singal@nrc.gov 301-415-3016
Hearing Identifier:
NRR_PMDA Email Number:
1933 Mail Envelope Properties (192BB59294514E41B5305C3C828676080188A7EF28D3)
Subject:
Request fro Additional Information - Palo Verde Nuclear Generating Station, Unit 2 Steam Generator Tube Inspections - TAC MF5053 Sent Date:
3/10/2015 10:10:55 AM Received Date:
3/10/2015 10:10:00 AM From:
Singal, Balwant Created By:
Balwant.Singal@nrc.gov Recipients:
"Watford, Margaret" <Margaret.Watford@nrc.gov>
Tracking Status: None
"Thomas.N.Weber@aps.com' (Thomas.N.Weber@aps.com)'" <Thomas.N.Weber@aps.com>
Tracking Status: None Post Office:
HQCLSTR02.nrc.gov Files Size Date & Time MESSAGE 2104 3/10/2015 10:10:00 AM Options Priority:
Standard Return Notification:
No Reply Requested:
No Sensitivity:
Normal Expiration Date:
Recipients Received:
ZZZ