ML18033A863
| ML18033A863 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 07/31/1989 |
| From: | Markisohn N Office of Nuclear Reactor Regulation |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| IEB-79-02, IEB-79-14, IEB-79-2, TAC-62259, NUDOCS 8908100027 | |
| Download: ML18033A863 (13) | |
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Docket No 50-260 UNITED STATES N CLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 July 31, 1989 LICENSEE:
TENNESSEE VALLEY AUTHORITY FACILITY:
BROWNS FERRY NUCLEAR PLANT, UNIT 2
SUBJECT:
SUMMARY
OF MEETING WITH TENNESSEE VALLEY AUTHORITY (TVA) HELD ON JUNE 28, 1989 TO DISCUSS THE BROWNS FERRY NUCLEAR PLANT, UNIT 2 SEISMIC PROGRAM (TAC 62259)
On June 28, 1989, the NRC staff met with the Tennessee Valley Authority (TVA or licensee) at the NRC offices in Rockvi lie, Maryland to discuss TVA's seismic design program for Browns Ferry Nuclear Plant (BFN) Unit 2 and related issues.
A list of attendees is attached as Enclosure l.
Enclosure 2 provides the agenda for the meeting and the handout from TVA is Enclosure 3.
TVA provided a review of the status and scope of the seismic'rogram at BFN as outlined in Volume 3, Section 3.0 of the licensee's Nuclear Performance Plan (NPP).
In addition, Sections 4.4 and
- 14. 14 were also reviewed.
The specific sections of the NPP which were discussed are as follows:
Section 3. 1 Torus Modifications TVA stated that the program, as outlined in the
- NPP, has not changed.
TVA expects the field work to be complete by September ll, 1989 with a report to the NRC targeted for October 23, 1989.
TVA is preparing a revision to this section of the NPP which will reflect editorial changes only.
NRC staff stated it will followup the open items from the January/February 1989 audit during a later inspection.
With regard to miscellaneous steel items associated with torus-attached
- piping, TVA stated it has completed this program and is ready for an NRC inspection.
Section 3.2 Pi in and Su orts IE Bulletins IEB) 79-02 and 79-14)
TVA has recently committed to complete 100Ã reanalysis of large-bore piping and supports prior to restart.
TVA's current schedule is to be design complete by September 30, 1989, with all required modifications completed by January 15, 1990.
Closeout of the program is scheduled for February 9, 1990.
The NRC staff is planning one more inspection of this program.
The staff has requested a printout of the licensee's hanger tracking system by September 1,
1989 in order to prepare for the inspection.
The staff plans to review the new engineering calculations when they are at least 905 complete.
Inspection(s) to verify the implementation of modifications will be conducted separately.
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TVA is revising this section of the NPP to reflect the change in scope of the program.
Section 3.3 Cable Tra Su orts Phase I, based on the interim criteria of the program, was closed and the NRC staff's Safety Evaluation Report (SER) was issued February 5, 1987.
Phase II is scheduled for closure with TVA's final licensing submittal in September 1989.
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~Cd The licensee stated that this program is design complete, with modifica-tions to be completed in November 1989.
TVA stated that the design calculations are ready for NRC staff review.
TVA's final submittal for this program is scheduled for December 1989.
Minor revisions to the NPP are planned for this section to identify criteria documents by name.
Section 3.5 HVAC Ductwork TVA will be design complete during September 1989 with all modifications completed by September 30, 1989.
The licensee anticipates closure of this program in late October to early November 1989.
Previous NRC inspections have yielded one remaining open item in this area with regard to buckling/
tearing.
TVA's evaluation of this issue is complete and ready for NRC review.
Section 3.6 Control Rod Drive Insert and Withdrawal Pi in TVA stated it expects to be design complete for this program by August 1, 1989.
TYA also requested further discussion with the NRC staff with regard to the recent submittal on the criteria.
TVA stated it does not expect the use of this criteria to result in additional support modifi-cations.
The staff stated it would provide TVA with a date and place for the detailed discussion of the criteria.
This section of the NPP is being revised.
Section 3.7 Small Bore Pi in TVA stated that it is planning to address the small bore piping and tubing programs in the same section of the NPP.
The NPP is being revised to cIar ify the scope of these programs.
For these
- programs, TVA stated the restart scope will cover safe shutdown boundary and restart boundary determined by the Design Baseline and Verification Program (DBVP) and will use interim operability criteria.
The tubing section of the program is scheduled to be design complete July 17, 1989 with modifications completed by September 30, 1989.
The small bore section will be design complete by August 30, 1989 (verification by approximately August 1, 1989) with modifications implemented by November 1, 1989.
The licensee indicated that they are currently 40% complete.
Phase II of this program (post-restart) will consist of completion of the remainder of the post-restart scope of the DBVP, and closeout of the interim operability criteria.
The staff requested that TVA provide an estimate of the total program scope that will be rigorously analyzed.
TVA agreed to provide the staff the number of supports and feet of pipe that will be rigorously analyzed with respect to the total program scope.
3 1
3.8
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This program covers two areas:
(I) the lower platforms, or elevations 563 ft.
and 584 ft., and (2) the upper platforms, or catwalks.
The design on the upper platforms is complete with field work scheduled for completion by June 30, 1989.
Tentative scheduling calls for completion of open items related to the horizontal rigidity of the lower platform by October 1, 1989.
Other items pertaining to the lower platforms are design complete and ready for review.
Section 3.9 Miscellaneous Steel The scope of this program is consistent with IEB 79-14.
Section 3. 10 Class II Over I This program was design complete on June 27, 1989 and modifications will be completed by September/October 1989.
NRC staff has requested a copy of the final report prepared by EgE which the licensee will forward after their review is completed.
This section of the NPP will be revised slightly to provide clarifications and editorial changes.
Section
- 3. 11 Secondar Containment Penetrations The NRC staff's SER has been previously issued.
The items addressed by this section of the NPP no longer exist, and the section is closed.
Section 3.12 Miscellaneous Civil Issue TYA stated that the this section of the NPP is being revised.
The revi-sion will address all items listed in Appendix D of the NPP.
NRC staff indicated that all Appendix D issues must be resolved prior to restart.
Section 4.4 Civil Calculations Review TVA is not planning to revise this section of the
- NPP, and there is no interim criteria for these calculations.
Originally, ll design areas were to be reviewed by the NRC staff.
Of these, four were proposed by the licensee to be reviewed post-restart.
Two areas were approved for post-restart review.
However, the remaining two areas, tornados including missiles and slope stability, will be reviewed prior to restart.
%r'ection 4.14 Platform Thermal Growth Platform thermal growth outside drywell is the only work remaining.
This is being tracked as an inspection item.
No submittals are planned by TVA.
In addition to the specific sections of the NPP addressed
- above, the flexible conduit, control rod drive housing, and several miscellaneous issues were discussed.
TVA's schedule fot submittal of the flexible conduit program is August 15, 1989.
More frequent discussions between the NRC and TVA with regard to the development of the approach to be used in the flexible conduit program was requested.
NRC staff identified an error in the analysis used for the control rod drive (CRD) housing during an inspection at General Electric (GE) during April 1989.
TVA presented their proposed design modifications to correct the problem.
A detailed schedule for the final design and modification completion has not yet been established.
The NRC staff indicated that the proposed approach used in the preliminary design modifications appears to be comprehensive and provides an adequate resolution to the problem.
The NRC staff also informed TVA that enforcement action with regard to this issue is being considered.
The NRC inspection report (50-260/89-31) in which the CRD housing problem is discussed was issued on July 17, 1989.
A follow.-up inspection with regard to this matter and a possible site visit are planned by the NRC.
The miscellaneous items discussed were primarily the scheduling of remaining inspections and the issuance of inspection reports.
The inspections yet to be performed include small bore and large bore piping, and remaining civil/struc-tural issues.
These inspections will be conducted after mid-August 1989.
Although the staff has not yet issued several inspection reports from previous inspections of the seismic design
- program, TVA acknowledged that the NRC staff and TVA have been in close contact with each other on the status of each open item identified in the inspections
- and, as a result, the reports have not hindered the completion of any items.
Original signed by Gerald E. Gears for Nancy M. Markisohn, Project Manager TVA Projects Division Office of Nuclear Reactor Regulation
Enclosures:
l.
Attendance List 2.
Agenda 3.
TVA Handout cc w/enc'losures:
See next page
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OFFICIAL RECORD COPY
I tt It I
CC:
General Counsel Tennessee Valley Authority 400 West Summit Hill Drive ET llB 33H Knoxville, Tennessee 37902 Mr. F. L. Moreadith Vice President, Nuclear Engineering Tennessee Valley Authority 400 West Summit Hill Drive WT 12A 12A Knoxville, Tennessee 37902 Dr. Mark 0. Medford Vice President and 'Nuclear Technical Director Tennessee Valley Authority 6N 38A Lookout Place Chattanooga, Tennessee 37402-2801
- Manager, Nuclear Licensing and Regulatory Affairs Tennessee Valley Authority 5N 157B Lookout Place Chattanooga, Tennessee 37402-2801 Mr. 0. J.
Zeringue Site Director Browns Ferry Nuclear Plant Tennessee Valley Authority P. 0.
Box 2000
- Decatur, Alabama 35602 Mr. P. Carier Site Licensing Manager Browns Ferry Nuclear Plant Tennessee Valley Authority P. 0.
Box 2000
- Decatur, Alabama 35602 Mr. G.
Campbell Plant Manager Browns Ferry Nuclear Plant Tennessee Valley Authority P. 0.
Box 2000
- Decatur, Alabama 35602
- Chairman, Limestone County Commission P.
0.
Box 188
- Athens, Alabama 35611 Claude Earl Fox, M.D.
State Health Officer State Department of'ublic Health State Office Building Montgomery, Alabama 36130 Regional Administrator, Region II U.S. Nuclear Regulatory Commission 101 Marietta Street, N.W.
Atlanta, Georgia 30323 Mr. Danny Carpenter Senior Resident Inspector Browns Ferry Nuclear Plant U.S. Nuclear Regulatory Commission Route 12, Box 637
- Athens, Alabama 35611 Dr. Henry Myers, Science Advisor Committee on Interior and Insular Affairs U.S.
House of Representatives Washington, D.C.
20515 Tennessee Valley Authority Rockville Office 11921 Rockville Pike Suite 402 Rockvi lie, Maryland 20852 Mr. Oliver D. Kingsley, Jr.
Senior Vice President, Nuclear Power Tennessee Valley Authority 6N 38A Lookout Place 1101 Market Street Chattanooga, Tennessee 37402-2801
ENCLOSURE 1
ATTENDANCE LIST Name Nancy Markisohn Thomas M. Cheng John Fair David Terao Gerry Gears Wayne L. Smathers Rick Cutsinger Tom Rupert Charles W. Whitehead Wayne A. Massie Affiliation NRC NRC NRC NRC NRC TVA TVA TVA TVA TVA
Enc1osure 2
TVA/NRC Meeting June 28, 1989 I.
Review of Browns Ferry Nuclear Plant seismic program scope versus Nuclear Performance Plan A. Civil structural B.
Engineering mechanics II.
Overview of Browns Ferry Nuclear Plant Control Rod Drive Housing III. Miscellaneous items
NUCLEAR PERFORMANCE PLAN, VOLUME ill SECTlON 3.0, SPECIAL PROGRAMS PARAGRAPH AND PROGRAM RESTART SCOPE INTERIM CRITERIA PHASE I
PHASE II 3.1 Torus Modifications 3.2 Piping and Supports (IEB's 79-02 and -14) 3.3 Cable Tray Supports 3.4 Conduit Supports 3h5 HVAC Supports 3.6 CRD Insert and Wit h drawal P i ping 3.7 Instrument Tubing 3.7 Small Bore Piping LTTIP. PUAR 100% Class I
100% Class I
100% Glass I
100% Class I
100 lo Glass I
DBVP SS Restart Boundary DBVP SS Restart Boundary No Yes Yes Yes Yes Yes Yes Yes X (A-46)
X (A-46)
NUCLEAR PERFORMANCE PLAN, VOLUME ill SECTION 3.0, SPECIAL PROGRAMS PARAGRAPH AND PROGRAM RESTART SCOPE INTERIM CRITERIA PHASE I
PHASE II 3.8 Drywell Steel 3.9 Miscellaneous Steel 3.10 Class II Over I
3.11 Secondary Cont.
Penetrations 3.12 Misc. Civil Issues 4.4 Civil Calculation Review 14.4 Platform Thermal Growth 100% Drywell
. Plat forms 100% Class I
100% Spray Potential Area 100%
Appendix D CAR's and SCR's 100% Essential for DBVP SS Restart Systems 100% Class I
Yes Yes No X (A-17)
(A-46)
No No No Yes X
X
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Meetin
- Summar, Memoranda for Tri Re orts or Site Visits dated July 31',
1989 Pocket File NRC PDR Local PDR Projects Reading ADSP Reading J; Sniezek D. Crutchfield B.
D. Liaw S. Black R. Pierson N. Markisohn G. Gears D. Moran T. Daniels M.
Simms B. Wilson, Region II W. S. Little OGC T.
Cheng J. Fair D. Terao ACRS (10)
GPA/CA (M. Callahan)
(3)
E. Jordan J. Zwolinski P.
Gwynn J.
Scarborough G. Marcus L. Norrholm C. Ader J.
Gray R. Borchardt BFN Rdg. File