ML031400013

4/15/2003, Callaway, Meeting Summary Planned Replacement of Steam Generators in Refueling Outage 14 for Callaway Plant

ML031400013
Person / Time
Site:	Callaway
Issue date:	05/20/2003
From:	Donohew J NRC/NRR/DLPM/LPD4
To:	Union Electric Co
Donohew J N, NRR/DLPM,415-1307
Shared Package
ML031400030	List: ML031400013
References
Download: ML031400013 (6)

Text

May 19, 2003 LICENSEE: Union Electric Company FACILITY: Callaway Plant

SUMMARY

OF MEETING WITH UNION ELECTRIC COMPANY ON APRIL 15, 2003, TO DISCUSS ITS PLANNED REPLACEMENT OF STEAM GENERATORS IN REFUELING OUTAGE 14 FOR CALLAWAY PLANT A meeting was held on Tuesday, April 15, 2003, between the Nuclear Regulatory Commission (NRC) staff and Union Electric Company, the licensee for the Callaway Plant. The meeting was at the request of the licensee for it to present its steam generator replacement project (SGRP) to replace the existing four steam generators (SGs) with improved SGs at the Callaway Plant.

The work and licensing issues are scheduled for the upcoming 13th and 14th refueling outages scheduled for the Spring of 2004 and Fall of 2005, respectively. The meeting was originally scheduled for March 26, 2003, but had to be rescheduled for April 15, 2003. The notice for the original and rescheduled meetings were issued on February 20 and March 20, 2003, respectively. is the list of attendees. Enclosure 2 is the slides handed out by the licensee.

There was no handout from the NRC staff. Enclosure 3 is a list of acronyms used by the licensee in its handout.

The agenda for the meeting is the following (which is taken from the second slide of ):

 Introduction

 General Description of Replacement Steam Generators (RSG) (Slides 3 through 18)

 Refuel 13 (Spring 2004) Work Scope (Slides 19 through 23)

 Refuel 14 (Fall 2005) Work Scope (Slides 24 through 31)

In the general description of the RSG, the licensee explained why it has decided to replace the SGs, presented a comparison between the RSG and the original steam generators (OSG),

discussed improvements in the RSG, and showed the current status of constructing and delivering the RSG. The improvements in the RSG are given on Slide 7. The improvements include the helix anti-stratification device, the foreign object capture system, and the tubing shown on Slides 8 through 10. A picture of the SG fabrication line at Framatome ANP, the company selected to fabricate the RSG, is Slide No. 5.

Although the RSGs are to be installed in Refueling Outage No. 14 (Refuel 14), there is work also planned for Refuel 13 and the operating cycle between Refuels 13 and 14. The work planned for Refuel 13 is shown in Slide 19: sludge lance platform modification, access door cut through secondary shield wall, and final SGRP walkdowns prior to Refuel 14. A picture of the door to be cut is shown in Slide 20 and a drawing of the sludge lance platform modification is shown in Slide 21. The existing platform will be expanded to provide more space for workers

who would be performing sludge lance work on the RSG during future refueling outages. The licensee also stated that the potential licensing actions needed for Refuel 13 are approval of the application of (1) leak before break (LBB), and (2) the American Society of Civil Engineers (ASCE) 4-86 seismic combination methodologies in analyses for the opening in the secondary shield wall. Work planned for the operating cycle between Refuels 13 and 14 is Slide 23.

For Refuel 14, the licensee stated that the potential licensing actions that may be needed for the refueling outage are the following: relief from the American Society of Mechanical Engineers Boiler and Pressure Vessel Code (ASME Code) if the RSG installation goes beyond the end of the second 10-year interval, removal of the SG trip time delay circuits to improve water level stability in the RSG, use of the RETRAN-3D computer code and an enhanced thick-metal model for selected heat-up events, and simplifying the current licensing basis methodology for the excessive steam load event. The licensees schedule for licensing action submittals to NRC for Refuels 13 and 14 is given in Slide 31.

After the licensee completed its presentation, there was a period of questions from the NRC staff and the meeting was concluded. There were no decisions made concerning the potential licensing actions to be submitted to the NRC.

/RA/

Jack Donohew, Senior Project Manager, Section 2 Project Directorate IV Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-483

Enclosures:

1. List of Meeting Attendees

2. Licensees Handout (ADAMS Accession No. ML031060221)

3. List of Acronyms cc w/encls: See next page

ML031060221)

3. List of Acronyms cc w/encls: See next page DISTRIBUTION:

PUBLIC JHannon (NRR/DSSA/SPLB)

PDIV-2 Reading JTsao (NRR/DE/EMCB)

RidsNrrDlpm (JZwolinski/TMarsh) CWu (NRR/DE/EMEB)

RidsNrrDlpmLpdiv (HBerkow) JPulsipher (NRR/DSSA/SPLB)

RidsNrrPMJDonohew SPeters (NRR/DSSA/SRXB)

WBateman (NRR/DE/EMCB) RidsNrrLAEPeyton GImbro (NRR/DE/EMEB) RidsRgn4MailCenter (AHowell)

JWermiel (NRR/DSSA/SRXB) RidsOgcRp MKotzalas (NRR/PMAS) RidsAcrsAcnwMailCenter RLorson (Rgn 4)

Package No.: ML031400030 Meeting Notice No.: ML030790010 NRC-001 ADAMS Accession No.: ML031400013 NRC-001 OFFICE PDIV-2/PM PDIV-2/LA PDIV-2/SC NAME JDonohew EPeyton SDembek DATE 5/13/2003 5/12/03 5/13/03 DOCUMENT NAME: G:\PDIV-2\Callaway\Summary-04-15-03-MTG.cw.wpd LIST OF MEETING ATTENDEES PLANNED STEAM GENERATORS REPLACEMENT AT CALLAWAY PLANT APRIL 15, 2003 NAME AFFILIATION J. Donohew NRC/NRR/PDIV-2 J. Tsao NRC/NRR/EMCB J. Wu NRC/NRR/EMEB J. Pulsipher NRC/NRR/SPLB S. Peters NRC/NRR/SRXB D. Shafer Ameren UE T. Herrman Ameren UE B. Yates Ameren UE K. Mills Ameren UE P. Cryderman Ameren UE B. Huhmann Ameren UE J. Galford Ameren UE D. Horner McGraw-Hill K. Drey Pubic (by phone)

C. Scuhland Fulton Sun Newspaper (by phone)

Where: NRC = Nuclear Regulatory Commission NRR = Office of Nuclear Reactor Regulation PDIV-2= Project Directorate IV-Section 2 EMCB = Materials and Chemical Engineering Branch EMEB = Mechanical and Civil Engineering Branch SPLB = Plant Systems Branch SRXB = Reactor Systems Branch AmerenUE = Ameren Union Electric Company ENCLOSURE 1

LICENSEES HANDOUT FOR APRIL 15, 2003, MEETING CALLAWAY STEAM GENERATOR REPLACEMENT PROJECT ADAMS ACCESSION NO. ML031060221 ENCLOSURE 2

LIST OF ACRONYMS ASCE American Society of Civil Engineers ASME American Society of Mechanical Engineers DG NRC draft regulatory guide FLB Feedline break FSAR Callaway Final Safety Analysis Report JSW Japan Steel Works LBB Leak before break LBLOCA Large break loss of coolant accident LOAC Loss of alternating current (AC) power LONF Loss of normal flow MCO Moisture carryover OSG Original steam generators PWR Pressurized water reactor RCS Reactor coolant system Refuel 13 Refueling Outage No. 13 RHR Residual heat removal system RMI Reflective metal insulation RSG Replacement steam generators SBLOCA Small break loss of coolant accident SG (or S/G) Steam generator SGRP Steam Generator Replacement Project SGT Steam Generator Team, a Washington Group International, Inc./ Framatome ANP, Inc.

Company TSP Type Tube support plate type ENCLOSURE 3

Callaway Plant, Unit 1 cc:

Professional Nuclear Consulting, Inc. Mr. Rick A. Muench 19041 Raines Drive President and Chief Executive Officer Derwood, MD 20855 Wolf Creek Nuclear Operating Corporation P.O. Box 411 John ONeill, Esq. Burlington, KA 66839 Shaw, Pittman, Potts & Trowbridge 2300 N. Street, N.W. Mr. Dan I. Bolef, President Washington, D.C. 20037 Kay Drey, Representative Board of Directors Coalition Mr. Mark A. Reidmeyer, Regional for the Environment Regulatory Affairs Supervisor / 6267 Delmar Boulevard Regulatory Affairs University City, MO 63130 AmerenUE P.O. Box 620 Mr. Lee Fritz, Presiding Commissioner Fulton, MO 65251 Callaway County Court House 10 East Fifth Street U.S. Nuclear Regulatory Commission Fulton, MO 65151 Resident Inspector Office 8201 NRC Road Mr. David E. Shafer Steedman, MO 65077-1302 Superintendent, Licensing Regulatory Affairs Manager, Quality Assurance AmerenUE AmerenUE P.O. Box 66149, MC 470 P.O. Box 620 St. Louis, MO 63166-6149 Fulton, MO 65251 Manager, Regulatory Affairs Manager - Electric Department AmerenUE Missouri Public Service Commission P.O. Box 620 301 W. High Fulton, MO 65251 P.O. Box 360 Jefferson City, MO 65102 Mr. Scott Clardy, Director Section for Environmental Public Health Regional Administrator, Region IV P.O. Box 570 U.S. Nuclear Regulatory Commission Jefferson City, MO 65102-0570 611 Ryan Plaza Drive, Suite 400 Arlington, TX 76011-4005 Mr. Garry L. Randolph Vice President and Mr. Ronald A. Kucera Chief Nuclear Officer Deputy Director for Public Policy Union Electric Company Department of Natural Resources P.O. Box 620 P.O. Box 176 Fulton, MO 65251 Jefferson City, Missouri 65102