ML092120429

Summary of Meeting with Northern States Power Company to Discuss License Amendment Request Concerning Unit 2 Emergency Diesel Generator Surveillance Test Loads

ML092120429
Person / Time
Site:	Prairie Island
Issue date:	09/02/2009
From:	Thomas Wengert Plant Licensing Branch III
To:	Northern States Power Co
Wengert, Thomas J, NRR/DORL, 415-4037
Shared Package
ML092120468	List: ML092120429
References
TAC ME0086, TAC ME0087
Download: ML092120429 (4)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 September 2, 2009 LICENSEE: Northern States Power Company - Minnesota (NSPM)

FACILITY: Prairie Island Nuclear Generating Plant, Units 1 and 2 (PINGP)

SUMMARY

OF JULY 23,2009, MEETING TO DISCUSS LICENSE AMENDMENT REQUEST CONCERNING UNIT 2 EMERGENCY DIESEL GENERATOR SURVEILLANCE TEST LOADS (TAC NOS. ME0086 AND ME0087)

On July 23, 2009, a Category 1 public meeting was held between the U.S. Nuclear Regulatory Commission (NRC) and representatives of Northern States Power Company, a Minnesota corporation (NSPM, the licensee), at NRC Headquarters, One White Flint North, 11555 Rockville Pike, Rockville, Maryland. The purpose of the meeting was to discuss NSPM's November 4, 2008, license amendment request (LAR) to revise the technical specification (TS) surveillance test loads for the PINGP Unit 2 emergency diesel generators (EDGs). A notice for this meeting was issued on July 8, 2009, and is available in the Agencywide Documents Access and Management System (ADAMS) at Accession No. ML091870818. The licensee's presentation can be found at ADAMS Accession No. ML092050236. An additional slide was presented at the meeting, which was separate from the main presentation, and is available at ADAMS Accession No. ML092080521.

The licensee's presentation to the NRC staff included a discussion of the technical and regulatory bases for the requested changes and a summary of the licensee's pending responses to the NRC staff's June 26, 2009 request for additional information on the LAR (ADAMS Accession No. ML091540227). The licensee also presented technical information concerning the loading of the Unit 2 EDGs under accident conditions.

The staff queried the licensee about their proposed revision to the TS surveillance testing requirements. The staff expressed concern that performing the surveillance testing at a load that was less than the continuous rating of the Unit 2 EDGs (i.e., >4000 kilowatts (kW) vs.

>5100 kW) could potentially "mask" design or operational problems that might exist in the engine, given that the U2 EDGs had experienced some failures in the past when the engines were tested at their rated load (5100 kW). In response, the licensee stated that, based on root cause evaluations they have conducted, they believe that the past failures can be attributed to issues associated with operating the engines with diesel fuel that contained low sulfur content.

The licensee added that, since they have begun adding sulfur to the diesel fuel, the performance of the EDGs at the rated load has improved.

-2 No regulatory decisions were made during this meeting. Members of the public were not in attendance. Public Meeting Feedback forms were not received. A list of attendees is included as an enclosure.

Please direct any inquiries to me at 301-415-4037, or Thomas.Wengert@nrc.gov.

~oc"<~~o~<f-Thomas J. Wengert, Senior Project Manager Plant Licensing Branch 111-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-282 and 50-306

Enclosure:

List of Attendees cc w/encls: Distribution via Listserv

LIST OF ATTENDEES JULY 23,2009 MEETING WITH NORTHERN STATES POWER COMPANY - MINNESOTA PRAIRIE ISLAND NUCLEAR GENERATING PLANT LICENSE AMENDMENT REQUEST CONCERNING UNIT 2 EMERGENCY DIESEL GENERATOR SURVEILLANCE TEST LOADS NAME ORGANIZATION D. Lambert Prairie Island D. Hartinger Prairie Island D. Carlisle Prairie Island J. Anderson Prairie Island S. McCall Prairie Island D. Vincent Prairie Island T. Wengert NRC/N RR/DORL M. Chawla NRC/NRR/DORL L. James NRC/NRR/DORL B. Wolfgang NRC/NRR/DCI S.Ray NRC/NRR/DE A. Marrero NRC/NRRIDIRS G. Wilson NRC/NRR/DE G. Matharu NRC/NRRIDE G. Waig* NRC/NRR/DIRS P. Zurawski* NRC/Rill/RIO

• participated via teleconference ACRONYMS NRC - U.S. Nuclear Regulatory Commission NRR - Office of Nuclear Reactor Regulation DORL - Division of Operating Reactor Licensing DCI - Division of Component Integrity DIRS - Division of Inspection and Regional Support DE - Division of Engineering Rill - Region III RIO - Resident Inspector's Office Enclosure

-2 No regulatory decisions were made during this meeting. Members of the public were not in attendance. Public Meeting Feedback forms were not received. A list of attendees is included as an enclosure.

Please direct any inquiries to me at 301-415-4037, or Thomas.Wengert@nrc.gov IRA!

Thomas J. Wengert, Senior Project Manager Plant Licensing Branch 111-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-282 and 50-306

Enclosure:

List of Attendees cc w/encls: Distribution via Listserv DISTRIBUTION:

PUBLIC LPL3-1 R/F RidsRgn3MailCenter Resource AMarrero. NRR RidsAcrsAcnw_MailCTR Resource CTucci, NRR GMatharu, NRR RidsNrrDorlLpl3-1 Resource MChawla. NRR GWaig. NRR RidsNrrPMPrairie Island Resource RWolfgang. NRR PZurawski, Rill RidsNrrLABTully Resource SRay. NRR SBagley. EDO Region III RidsOgcRp Resource GWilson. NRR ADAMS Accession Nos.: PKG ML092120468 Meeting Notice ML091870818 Meeting Summary ML092120429 Handouts ML092050236 and ML09208521 OFFICE NRR/DORULPL3-1/PM NRR/DORULPL3-1/LA NRR/DE/EEEBIIBC NRR/DORULPL3-1/BC NAME T. Wengert THarris for B. Tully GMatharu for G. Wilson L. James DATE 08/28/09 08/28/09 08/28/09 09/02/09 OFFICIAL RECORD COpy