ML19241B854
| ML19241B854 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 06/14/1979 |
| From: | Wigginton D Office of Nuclear Reactor Regulation |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| TAC-11431, NUDOCS 7907250057 | |
| Download: ML19241B854 (9) | |
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Docket No. 50-334 Jgg 1 4 197g LICENSEE:
Duquesne Light Company Facility:
Beaver Valley Unit No. 1
SUBJECT:
MEETING
SUMMARY
- PIPESTRESS REANALYSIS The licensee and Stone and Webster Engineering Corporation met with the staff on May 24, 1979 to discuss the amplified response spectra (ARS) developed with consideration of soil structure interactions.
The proposed ARS is to be used in the pipestress reanalysis for the Beaver Valley, Unit No. 1.
The list of attendees is shown on Enclosure 1.
Stone and Webster (S&W) presented the information on the Beaver Valley site.
This information is included in the..ay 23, 1979 letter from Mr. C. N. Dunn to the NRC on the ARS proposed and in Enclosure II on the soil properties and location.
The soil properties for the pro-posed ARS and the ongoing liguafaction review are reported by S&W to be the same.
Following a discussion by the NRC staff, the licensee was informed that the proposed ARS would be acceptable if calculated stresses were in-creased by 207, in the fundamental period range of 0.4 to 0.55 sec.
This corresponds to the natural frequency range of the peak acceleration as presented in the PSAR.
In further investigation by S&W, only one system is effected; the raw water system.
Further delays in the re-analysis are not expected.
/
Dave Wigginton, ject Manager Operating Reactors Branch #1 Division of Operating Reactors
Enclosures:
List of Attendees Soil Properties and Location cc:
w/ enclosures See next page
/
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7 907250o57
Meeting Summary for Beaver Valley Unit 1 June 14,1979 Docket Files NRC PDR Mr. James A. Werling Local PDR Plant Superintendent ORBl Reading Beaver Valley Power Station NRR Reading P. O. Box 4 H. Denton Shippingport, Pennsylvania 15077 E. Case V. Stello Mr. J. D. Woodward D. Eisenhut R & O Center B. Grimes Westinghouse Electric Corporation R. Vollmer Building 7-303 A. Schwencer Pittsburgh, Pennsylvania 15230 D. Ziemann P. Check B. F. Jones Memorial Library G. Lainas 663 Franklin Avenue D. Davis Aliquippa, Pennsylvania 15001 B. Grimes T.
Ippolito Mr. Jack Carey R. Reid Technical Assistant V. Noonan Duquesne Light Company G. Knighton P. O. Box 4 D. Brinkman Shippingport, Pennsylvania 15077 Project Manager OELD Mr. R. E. Martin OISE (3)
Duquesne Light Company C. Parrish 435 Sixth Avenue ACRS (16)
Pittsburgh, Pennsylvania 15219 NRC Participants J. Buchanan Marvin Fein TERA Utility Counsel Licensee Ci ty of Pi ttsburgh Gerald Charnoff, Esquire 313 City-Ceunty Building Jay E. Silberg, Esquire Pi ttsburgh, Pennsylvania 15219 Shaw, Pittman, Potts and Troworidge 1800 M Street, N.W.
Washington, D. C.
20036 Karin Carter, Esquire Special Assistant Attorney General Bureau of Administrative Enforcement 5th F',oor, Executive House Harrisburg, Pennsylvania 17120 Mr. J. M. Cumiskey Stone anc Webster Engineering Corporation P. O. Box 2325 j
l.j Boston, Massachusetts 02107 r
7
ENCLOSURE I BEAVER VALLEY PIPESTRESS MEETING LIST OF ATTENDEES NAME ORGANIZATION D. Wigginton ORB #1-NRR J. P. Knight NRC/ DSS Steve Lewis NRC/0 ELD P. A. Wild Stone & Webster K. A. Condon Stone & Webster S. C. Rossier Stone & Webster J. T. Christian Stone & Webster A. S. Lucks Stone & Webster J. J. Carey Duquesne Light Co.
G. W. Moore Duquesne Light Co.
B. W. Churchill Shaw, Pittman J. Martore NRC J. Kane NRC J. M. Giannelli NRC F. P. Schauer NRC H. E. Polk NRC/ DSS /SEB P. Chan NRC/ DSS /SEB P. T. Kuo NRC/ DSS /SEB J. Greeves NRC L. Heller NRC a
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TAM.R 1 PERCENT VARIATION FROM AVERAGE K, CEWE CORRESPONDING TO + ONE STANDARD DEVIATION OF ALL DATA POINTS SHOVN ON FIG. 5.2 (REF. 1)
Shear Strain Range, %
1 Percent of Average K Value 2
in Range Corresponding to 1 One Stenaard Deviation, %
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-3 10 to 10 11/.1 10 to 6 x 10'3 1 17.8
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1.
See Figure 1 2.
Standard Deviation is Function of Variability of Data Shown on Figure 1 and Variation of Marimta Shear Moduli Values Measured at Beaver Valley Power Station 1 & 2.
3.
G = 1000 K2(0
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