ML15075A260

Request for Additional Information Spring 2014 Steam Generator Tube Inspections

ML15075A260
Person / Time
Site:	Salem
Issue date:	03/24/2015
From:	Carleen Parker Plant Licensing Branch 1
To:	Joyce T Public Service Enterprise Group
Parker C, NRR/DORL/LPL1-2, 415-1603
References
TAC MF5117
Download: ML15075A260 (4)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 March 24, 2015 Mr. Thomas Joyce President and Chief Nu.clear Officer PSEG Nuclear P.O. Box 236, N09 Hancocks Bridge, NJ 08038

SUBJECT:

SALEM NUCLEAR GENERATING STATION, UNIT NO. 2 - REQUEST FOR ADDITIONAL INFORMATION RE: SPRING 2014 STEAM GENERATOR TUBE INSPECTIONS (TAC NO. MF5117)

Dear Mr. Joyce:

By letter dated October 30, 2014 (Agencywide Documents Access and Management System Accession No. ML14303A032), PSEG Nuclear LLC (the licensee) submitted information summarizing the results of the spring 2014 steam generator tube inspections performed at Salem Nuclear Generating Station, Unit No. 2. These inspections were performed during refueling outage 20.

The NRC staff has determined that additional information is needed to complete its review of the submittal. The specific questions are found in the enclosed request for additional information.

The draft questions were sent via electronic transmission on March 16, 2015, to Mr. Paul Duke of your staff. The draft questions were sent to ensure the questions were understandable, the regulatory basis was clear, and to determine if the information was previously docketed. On March 24, 2015, Mr. Duke indicated that the licensee will submit a response within 60 days of this letter.

If you have any questions, please contact me at 301-415-1603 or via e-mail at Carleen.SandersParker@nrc.gov.

Sincerely, Carleen J. P er, Project Manager Plant Licensing Branch 1-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-272 and 50-311

Enclosure:

Request for Additional Information cc w/encl: Distribution via Listserv

REQUEST FOR ADDITIONAL INFORMATION OFFICE OF NUCLEAR REACTOR REGULATION SPRING 2014 STEAM GENERATOR INSPECTIONS SALEM NUCLEAR GENERATING STATION. UNIT NO. 2 PSEG NUCLEAR LLC EXELON GENERATION COMPANY. LLC DOCKET NO. 50-311 By letter dated October 30, 2014 (Agencywide Documents Access and Management System Accession No. ML14303A032), PSEG Nuclear LLC (PSEG or the licensee) submitted information summarizing the results of the spring 2014 steam generator tube inspections performed at Salem Nuclear Generating Station, Unit No. 2. These inspections were performed during refueling outage 20 (RFO 20). To complete its review, the NRC staff requests a response to the questions below.

1. Please provide the cumulative effective full power months of operation that the steam generators (SGs) have operated as of RFO 20.

2. Please discuss the scope and results of any secondary side inspections.

3. Please summarize the number of indications and tubes with wear at the anti-vibration bars. Please summarize the number of indications and tubes with wear at the tube support plates (TSPs). Please discuss whether the number of new wear indications and wear growth rates have continued to decrease from RFO 19 to RFO 20, for both anti-vibration bar and TSP wear.

4. Please clarify whether the tube in row 104, column 66 in SG 24 has two wear indications at 06C (one at 06C-0.58-inches and one at 06C+0.40-inches). Please discuss whether these indications are associated with TSP lands.

5. Please discuss the scope and results of any primary channel head inspections.

6. Please identify the tubes plugged during RFO 20.

7. Previously, the tube located in row 1, column 63 in three of the four SGs had wear at various TSP intersections. Please discuss any insights into the cause of wear given the limited number of indications of TSP wear and the general random nature of this form of degradation.

Enclosure

8. Please discuss whether the two inaccessible nuts on secondary components (hatches, camera ports), where other nuts were found to be loose in prior inspections, were able to be accessed to ensure tightness.

Mr. Thomas Joyce President and Chief Nuclear Officer PSEG Nuclear P.O. Box 236, N09 Hancocks Bridge, NJ 08038

SUBJECT:

SALEM NUCLEAR GENERATING STATION, UNIT NO. 2 - REQUEST FOR ADDITIONAL INFORMATION RE: SPRING 2014 STEAM GENERATOR TUBE INSPECTIONS (TAC NO. MF5117)

Dear Mr. Joyce:

By letter dated October 30, 2014 (Agencywide Documents Access and Management System Accession No. ML14303A032), PSEG Nuclear LLC (the licensee) submitted information summarizing the results of the spring 2014 steam generator tube inspections performed at Salem Nuclear Generating Station, Unit No. 2. These inspections were performed during refueling outage 20.

The NRC staff has determined that additional information is needed to complete its review of the submittal. The specific questions are found in the enclosed request for additional information.

The draft questions were sent via electronic transmission on March 16, 2015, to Mr. Paul Duke of your staff. The draft questions were sent to ensure the questions were understandable, the regulatory basis was clear, and to determine if the information was previously docketed. On March 24, 2015, Mr. Duke indicated that the licensee will submit a response within 60 days of this letter.

If you have any questions, please contact me at 301-415-1603 or via e-mail at Carleen. Sanders Parker@nre.gov.

Sincerely, IRA/

Carleen J. Parker, Project Manager Plant Licensing Branch 1-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-272 and 50-311

Enclosure:

Request for Additional Information cc w/encl: Distribution via Listserv DISTRIBUTION:

PUBLIC LPLl-2 R/F RidsAcrsAcnw_MailCTR Resource RidsPMSalem Resouce RidsNrrDorlDpr Resource RidsNrrDorlLpl1-2 Resource RidsNrrDeEsgb Resource RidsRgn1 MailCenter Resource RidsNrrLAABaxter Resource A.Johnson, ESGB A.Huynh, ESGB ADAMS Accession No. ML15075A260 *Bly Memo Date d OFFICE LPL 1-2/PM LPL 1-2/LA DE/ESGB/BC LPL 1-2/BC LPL 1-2/PM NAME CParker ABaxter GKulesa* DBroaddus CParker (JLamb for)

DATE 03/24/2015 03/18/2015 03/04/2015 03/24/2015 03/24/2015 Official Record Copy