ML13338A128
| ML13338A128 | |
| Person / Time | |
|---|---|
| Site: | Prairie Island  |
| Issue date: | 12/03/2013 |
| From: | Scott Wall Plant Licensing Branch III |
| To: | James Anderson Nuclear Management Co |
| References | |
| MF2302 | |
| Download: ML13338A128 (3) | |
Text
1 NRR-PMDAPEm Resource From:
Wall, Scott Sent:
Tuesday, December 03, 2013 4:31 PM To:
Anderson, Jon S.
Cc:
Vincent, Dale M.; Wall, Scott; Johnson, Andrew
Subject:
Prairie Island - Request for Additional Information Regarding 2012 Unit 180-Day Steam Generator Tube Inspection Report (MF2302)
Attachments:
Prairie Island - Request for Additional Information - MF2302.pdf Mr. Anderson By [[letter::L-PI-13-048, Supplement to License Amendment Request (LAR) to Revise Emergency Plan (EP) Emergency Action Levels (Eals): RA 1.2 and Fuel Clad Barrier Loss Criteria|letter dated June 21, 2013]], (Agencywide Documents Access and Management System Accession No. ML13172A344), Northern States Power Company, doing business as Xcel Energy (NSPM), submitted information summarizing the results of the 2012 steam generator tube inspections at Prairie Island Nuclear Generating Plant, Unit 1. These inspections were performed during the twenty-eighth refueling outage.
The U.S. Nuclear Regulatory Commission staff has reviewed the information the licensee provided and determined that additional information is required in order to complete the review, as described in the attached request for additional information (RAIs). We request that NSPM respond to these RAIs within 45 days.
Please note that review efforts on this task are being continued and further RAIs may develop.
Please let me know if you have any questions or concerns.
Sincerely, Scott P. Wall, PMP, LSS BB, BSP Senior Project Manager Plant Licensing Branch III-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation 301.415.2855 Scott.Wall@nrc.gov
Hearing Identifier:
NRR_PMDA Email Number:
940 Mail Envelope Properties (C0A338EE37A11447B136119705BF9A3F02045E0BA4A4)
Subject:
Prairie Island - Request for Additional Information Regarding 2012 Unit 180-Day Steam Generator Tube Inspection Report (MF2302)
Sent Date:
12/3/2013 4:30:37 PM Received Date:
12/3/2013 4:30:40 PM From:
Wall, Scott Created By:
Scott.Wall@nrc.gov Recipients:
"Vincent, Dale M." <Dale.Vincent@xenuclear.com>
Tracking Status: None "Wall, Scott" <Scott.Wall@nrc.gov>
Tracking Status: None "Johnson, Andrew" <Andrew.Johnson@nrc.gov>
Tracking Status: None "Anderson, Jon S." <jon.anderson@xenuclear.com>
Tracking Status: None Post Office:
HQCLSTR02.nrc.gov Files Size Date & Time MESSAGE 1192 12/3/2013 4:30:40 PM Prairie Island - Request for Additional Information - MF2302.pdf 18349 Options Priority:
Standard Return Notification:
No Reply Requested:
No Sensitivity:
Normal Expiration Date:
Recipients Received:
REQUEST FOR ADDITIONAL INFORMATION 2012 STEAM GENERATOR TUBE INSPECTIONS PRAIRIE ISLAND NUCLEAR GENERATING PLANT, UNIT 1 DOCKET NUMBER 50-282 TAC NOS. MF2302 By [[letter::L-PI-13-048, Supplement to License Amendment Request (LAR) to Revise Emergency Plan (EP) Emergency Action Levels (Eals): RA 1.2 and Fuel Clad Barrier Loss Criteria|letter dated June 21, 2013]], (Agencywide Documents Access and Management System Accession No. ML13172A344), Northern States Power Company (the licensee), a Minnesota corporation doing business as Xcel Energy, submitted information summarizing the results of the 2012 steam generator (SG) tube inspections at Prairie Island Nuclear Generating Plant (PINGP), Unit 1. These inspections were performed during the twenty-eighth refueling outage (1R28). In order to complete its review of the document listed above, the Nuclear Regulatory Commission staff requests the following additional information:
- 2. Please discuss the results of the visual inspections of the installed plugs in the SGs during 1R28. Also, if any inspections of the primary channel head area were performed, please discuss the results.
- 3. Three tubes were de-plugged during the 2012 outage to identify growth of repeat indications and to identify any new indications to see how they compared against indications seen in in-service tubes. Please discuss the results of the inspections of the de-plugged tubes and any insights from your analyses of the results.
- 4. Please confirm the following:
In SG 11, 168 indications of tube support plate (TSP) wear were detected in 116 tubes during the 2012 outage, and 160 indications in 113 tubes were returned to service.
In SG 11, 36 indications of anti-vibration bar (AVB) wear were detected in 15 tubes during the 2012 outage, and 29 indications in 14 tubes were returned to service.
In SG 12, 62 indications of TSP wear were detected in 52 tubes during the 2012 outage, and 61 indications in 51 tubes were returned to service.
In SG 12, 87 indications of AVB wear were detected in 35 tubes during the 2012 outage, and 87 indications in 35 tubes were returned to service.
ENCLOSURE