ML20042A935
| ML20042A935 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 03/10/1982 |
| From: | Stolz J Office of Nuclear Reactor Regulation |
| To: | Bauer E PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| References | |
| IEB-80-11, NUDOCS 8203240298 | |
| Download: ML20042A935 (4) | |
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g Dockets Nos. 50-277 ORB #4 Rdg and 50-278 DEisenhut REC 3iV5D OELD b
, 3, AE0D MARI 91982>
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f1r. Edward G. Bauer, Jr.
ACRS-10 8CGgana Vice President and General ' Counsel MFairtile Philadelphia Electric Company RIngram 2301 Harket Street Gray File A
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Philadelphia, Pennsylvania 19101 CTrammell FSchauer
Dear Mr. Bauer:
1 Based on our review of your responses dated July 2 and November 3,1980, and May 4,1981 to our Inspection and Enforcement Bulletin 80-11,
!!asonary Wall Design, May 8,1980, we find that we need tha; enclosed additional information for the Peach Bottom Station Units 2 and 3, in order to complete our review. These questions were prepared ny the Franklin Research Center of Philadelphia, Pennsylvania;odur contractor for this review.
OND clearance is not required for this request since it is unique to the Peach Bottom Station.
V,indly respond to this request by !!ay 1,1982.
Sincerely, f waca arca)37 JM F. STOE8 v t
John F. Stolz, Chfef Operating Reactors Branch #4 Division of Licensing
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4fnclosure:
Request fer Additional Information cc w/ enclosure:
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PDR ADOCK 05000277 OFFICIAL RECORD COPY usomai--mm O
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e Philadelphia Electric Company ecw/ enclosure (s):
Eugene J. Bradley Philadelphia Electric Company Regional Radiation Representative Assistant General Counsel EPA Region III 2301 Market Street Curtis Building (Sixth Floor)
Philadelphia, Pennsylvania 19101 6th and Walnut Streets Philadelphia, Pennsylvania 19106 Troy B. Conner, Jr.
1747 Pennsylvania Avenue, N.W.
M. J. Cooney, Superintendent Washington, D. C.
20006 Generation Division - Nuclear Philadelphia Electric Company 2301 Market Street Philadelphia, Pennsylvania 19101 Government Publications Section Thomas A. Doming, Esq.
State Library of Pennsylvania Assistant Attorney General Education Building Department of Natural Resources Commonwealth and Walnut Streets Annapolis, Maryland 21401 Harrisburg, Pennsylvania 17126 Philadelphia Electric Company
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ATTN: Mr. W. T. Ullrich Peach Bottom Atomic Power Station Mr. R. A. Heiss, Coordinator Delta, Pennsylvania 17314 Pennsylvania State Clearinghouse Governor's Office of State Planning Albert R. Steel, Chairman and Development Board of Supervisors P. O. Box 1323 Peach Bottom Township Harrisburg, Pennsylvania 17120 R. D. #1 Delta, Pennsylvania 17314 Curt Cowgill U.S. Nuclear Regulatory Commission Office of Inspection and Enforcement Peach Bottom Atomic Power Station P. O. Box 399 Delta, Pennsylvania 17314 Mr. Ronald C. Haynes, Regional Administrator U. S. Nuclear Regulatory Commission, Region I Office of Inspection and Enforcement 631 Park Avenue King of Prussia, Pennsylvania 19406
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Enclosure to ltr. dtd. 3/10/82 REQUEST FOR ADDITIONAL INFORMATION PEACH BOTTOM STATION - UNITS 2 AND 3 1.
With reference to Section 3, Appendix I, part 1 [4], justify the basis for load combinations 7, 8, and 9.
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2.
With reference to Table 1, Appendix I, part 1 [4], justify the proposed 30% increase in al.'owable stress for load combinations including CBE loads, for which no increase is allowed in the SEB criteria [5].
3.
With reference to Table 1, Appendix I, part 1 [4], justify the increase factors of 1.67 applied to allowable stresses in shear, bond, tension normal to the bed joint, and tension parallel to the bed joint. The SEB criteria [5] allow increase factors of only 1.5 for tension parallel to thi bed joint and shear. in the reinforcement and 1.3 for tension normal to the bed joint and masonry shear.
With reference to S'ction 5.2.4, Appendix I, part 1 [4], justify the 4.
e increase factor of 1.67 proposed for allowable in-plane strains.
5.
Provide justification for the two approaches proposed in parts 1 and 2 of Section 5.4, Appendix I [4] for determining modulus of rupture.
6.
Justify the use of alternative acceptance criteria of Section 6.0, Appendix I, part 1, since it is the NRC's position that energy balance techniques and the arching t,heory should not be used in the absence of conclusive evidence of their applicability to masonry structures in nuclear power plants.
7.
With reference to Section 7.1.2, Appendix I, part 1 [4], provide sample calculations to indicate how the effects of higher modes of vibration are accounted for.
8.
With reference to Section 7.1.4, Appendix I, part 1 [4], justify the use of average floor acceleration instead of the envelope of the floor response spectra.
9.
With reference to Section 7.2, Appendix I, part 2 [4], provide justification and references for the formulae used to determine moments.
Indicate how the walls with openings were analy:ed.
10.
Provide brief descriptions for the analytical approaches used for single wythe and multiple wythe walls.
11.
With regard to seismic analysis, indicate how the equipment loads were accounted for and how the earthquake forces in horizontal and vertical directions were considered.
- 12. Provide details of proposed wall modifications and indicate, using sanple calculations, how these modifications will correct the wall deficiencies.
2-
- 13. Provide a status report of the proposed wall modifications.
- 14. Provide the results of the wall analysis indicating the walls that do not qualify under the working stress criteria.
- 15. Indicate whether the door modifications and vent installations recommended by Bechtel [4] pertain to walls 68.1 to 68.4; if they do not, provide a complete description of the problem, including wall identification and proposed modification.
REFERENCES 1.
Masonry Wall Design USNRC, 08-May-80 IE Bulletin 80-11 2.
S. L. Daltroff Letter to B. H. Grier. NRC.
Subject:
Response to IE Bulletin 80-11, Peach Bottem Atomic Power Station Philadelphia Electric Co., 02-Jul-80 3.
S. L. Daltroff Letter to B. H. Grier, NRC.
Subject:
Interim Response to Item 2b of IE Bulletin 80 Peach Bottem Atomic Power Station Philadelphia Electric Co., 03-Nov-80 4.
S. L. Daltroff Letter with attachment to B. H. Grier, NRC.
Subject:
IE Bulletin 80 Reevaluation of Concrete Masonry Walls for Peach Bottem Atemic Power Station Philadelphia Electric Co., 04-May-81 5.
Interin Criteria for Safety-Related Masonry Wall Evaluation USNRC, 00-July-31
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SRP 3.8.4, Appendix A -
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6.
Uniform Bu'ilding Code International Conference of Building Officials, 1979 7.
Building Code Requirements for Concrete Masonry Structures Cetroit: American Concrete Institute, 1979 ACI 531-79 and ACI 531-R-79 8.
M. J. Cooney Letter to B.
H. Grier, NRC.
Subject:
Licensee Event Report Narrative Cescription and Transmittal of LER Philadelphia Electric Co., 04-Jun-81 LER 2-81-32/lT-0 t