ML20205S319
| ML20205S319 | |
| Person / Time | |
|---|---|
| Site: | Yankee Rowe |
| Issue date: | 06/06/1986 |
| From: | Clifford J Office of Nuclear Reactor Regulation |
| To: | Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML20205S323 | List: |
| References | |
| TASK-03-06, TASK-3-6, TASK-RR NUDOCS 8606120186 | |
| Download: ML20205S319 (7) | |
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l JUN 00 1935 Docket No.50-029 LICENSEE: Yankee Atomic Electric Company (YAEC)
FACILITY: Yankee Nuclear Power Station (Yankee)
SUBJECT:
MEETING
SUMMARY
ON SYSTEMATIC EVALUATION PROGRAM (SEP) SEISMIC REVIEW (TOPIC III-6)
A meeting was held on April 8 through April 11, 1986 between members of the NRC staff, personnel from YAEC, and their respective consultants at the CYGNA corporate offices in San Francisco, CA. The meeting is the second of four planned technical meetings being held to resolve the Yankee seismic analysis for SEP topic III-6. A list of attendees is provided in Enclosure 1.
The meeting focused on responses to NRC questions dealing with seismic analyses for the Yankee structures, systems and components. The meeting agenda is provided in Enclosure 2.
The meeting was conducted in three parts. The first day was spent discussing the methods and criteria used in analyzing the site structures, focusing primarily on the issues identified in a letter dated March 14, 1986 from J. W. Clifford to G. Papanic, Jr.
During the second day, the discussions focused on the analysis methods and criteria used for piping systems.
In addition, the staff started the third part of the meeting which involved an audit of the licensee's calculations and documentation of the seismic analyses of structures.
The remainder of the week was spent auditing the licensee's calculations and documentation of their seismic analyses for both structures and systems.
The documents used in the licensee's presentation are provided in Enclosure 3.
These documents also served as a basis for discussion of the licensee's seismic evaluation program, and of their responses to staff questions. consists of the following sections:
1.
Update of the Sumary of SEP Topic III-6 NRC questions.
2.
Update of the Summary of Work Performed to Address SEP Topic III-6.
3.
Copies of viewgraphs documenting Yankee responses to staff questions on structure's seismic analysis.
4.
Handout providing detailed responses to staff questions on piping system's seismic analysis.
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Viewgraphs used in discussing " Seismic Reevaluation and Retrofit Criteria."
6.
Handout detailing the Yankee In-Situ frequency testing program for piping systems.
Discussions regarding the analysis of the Diesel Generator (DG) building were deferred to allow the staff time to evaluate whether or not the DG building and the equipment contained within the DG building, is considered part of the Yankee Safe Shutdown Scope (SSS).
If the DG building is to be considered part of the SSS, the analysis will be discussed at a future meeting.
If the DG building is not part of the SSS, there will not be any further discussion of its analysis.
A number of commitments were made during the discussions.
1.
YAEC is to formally submit a letter dated April 20, 1983 from B. W.
Holmgren to E. Van Stijgeren that includes the Yankee Ultimate Soil Bearing Capacity Report. This letter is needed to document a number of assumptions used by YAEC in its seismic analysis.
2.
YAEC is to formally submit documentation detailing the seismic analyses for the Dedicated Safe Shutdown System, Dedicated Safe Shutdown Building, and Block Walls.
3.
YAEC is to provide a tabulation of damping values used in the seismic analysis of each system and component.
4.
The staff and YAEC agreed that the staff would document its review in one SER, instead of two SERs as previously agreed to. The SER will cover both the methods / criteria and the analysis review. This change is a result of increased efforts by both the staff and YAEC to complete the review and any necessary additional work for the SEP seismic issue.
5.
The NRC staff identified the structures and systems to be included in its confirmatory analysis. These are: (a) one loop of the reactor coolant system piping; (b) the dedicated safe shutdown system; and (c) the primary auxiliary building (PAB). The staff confirmatory analysis will use the NRC site specific spectra, and the results compared to NRC functionality criteria to determine accept-ability of the analysis results.
YAEC agreed to ensure that these structures and systems were analyzed using both NRC site specific spectra and Y'ankee Composite Spectra (YCS), with the results available for staff review.
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YAEC agreed to provide the ground time history (three components) and the floor response spectra for the structures and systems that will be subject of these confirmatory analyses.
7.
The staff will complete its evaluation of the adequacy of the Yankee SSS, and inform YAEC as soon as the staff evaluation is completed. This evaluation will include a review of possible seismic coupling between the DGB and the PAB.
The next meeting in this series was set for the week of May 19, 1986, with a site visit on 19 May, and a continuation of the meeting in Framingham on 20-21 May 1986, at the YAEC corporate headquarters.
hl James W. Clifford, Project Manager Project Directorate #1 Division of PWR Licensing-A
Enclosures:
As Stated cc w/ enclosures:
Service List Attendees
- SEE PREVIOUS CONCURRENCE Office:
PM/ PAD #1 ISAPD PD/ISAPD PD/ PAD #1 Surname: *JClifford/tg *TCheng
- CGrimes GLear Date:
05/29/86 06/02/86 06/02/86 h/ h/86 4
o
Mr. George Papanic, Jr.
Yankee Atomic Electric Company Yankee Nuclear Power Station cc:
Mr. James E. Tribble, President Yankee Atomic Electric Company 1671 Worcester Road Framingham, Massachusetts 01701 Thomas Dignan, Esquire Ropes and Gray 225 Franklin Street Boston, Massachusetts 02110 Mr. N. N. St. Laurent Plant Superintendent Yankee Atomic Electric Company Star Route Rowe, Massachusetts 01367 Chairman Board of Selectmen Town of Rowe Rowe, Massachusetts 01367 Resident Inspector Yankee Nuclear Power Station c/o U.S. NRC Post Office Box 28 Monroe Bridge, Massachusetts 01350 Regional Administrator, Region I U.S. Nuclear Regulatory Commission 631 Park Avenue King of Prussia, Pennsylvania 19406 Robert M. Hallisey, Director Radiation Control Program Massachusetts Department of Public Health 150 Tremont Street, 7th Floor Boston, Massachusetts 02111
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ENCLOSURE 1 k
l NRC MEETING 04/08/86 NAME AFFILIATION PHONE NO.
Pepe Vallenas CYGNA 415-397-5600 i
L. C. Shieh LLNL 415-423-0857 (Tom) N. C. Tsai NCT Engineering 415-283-0471 4
Mike Shulman CYGNA 415-397-5600 John D. Hazeltine Yankee 617-872-8100 Jim Clifford NRC 301-492-7214 Donald LeFrancois YAEC 617-872-8100 Bruce Holmgren YAEC 617-872-8100 Thomas Cheng NRC 301-492-8903 Darlene Leong CYGNA 415-397-5600 George Papanic, Jr.
YAEC 617-872-8100 Eric Van Styjeren Quadren 408-370-4275 Bilgin Atalay CYGNA 415-397-5600 f
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ENCLOSURE 2 YANKEE ATOMIC ELECTRIC COMPANY U.S. NUCLEAR REGULATORY COMMISSION CYGNA ENERGY SERVICES MEETING AGENDA FOR YANKEE NUCLEAR POWER STATION RESOLUTION OF SEP TOPIC III-6 LOCATION: CYGNA 0FFICES - 10TH FLOOR 101 CALIFORNIA STREET SAN FRANCISCO, CALIFORNIA 94111 MONDAY, APRIL 7, 1986 NRC Caucus with Staff Cor.sultants TUESDAY, APRIL 8,1981 9:00 - Review of Summary Table of SEP NRC Questions 10:00 - Review of Summary of Work Matrix 11:00 - Presentation on Criteria and Methodology for Structures 1:00 - Response to NRC Questions on Structures Scheduled for April Resolution WEDNESDAY, APRIL 9, 1986 8:30 - Presentation on Criteria and Methodology for Piping 11:00 - Presentation of In-Situ Dynamic Testing of Small Bore Pipe
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1:00 - Response to NRC Questions on Piping Scheduled for April Resolution THURSDAY, APRIL 10, 1986 8:30 - Audit of Documentation and Calculations FRIDAY, APRIL 11, 1986
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8:30 - Audit of Documentation and Calculations 4
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DISTRIBUTION:
- Docket Files,
NRC PDR Local PDR G. Lear J. Clifford artlow (Emergency Preparedness only)
E. Jordan B. Grimes ACRS (10)
NRC Participants s
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