ML20049J622
| ML20049J622 | |
| Person / Time | |
|---|---|
| Site: | Hatch  |
| Issue date: | 03/04/1982 |
| From: | Stolz J Office of Nuclear Reactor Regulation |
| To: | Beckham J GEORGIA POWER CO. |
| References | |
| IEB-80-11, TAC-42920, TAC-42921, NUDOCS 8203180505 | |
| Download: ML20049J622 (4) | |
Text
~
ghtCH c 4 h32 y 'Obej f'(.
DISTRIBUTI0ft:
ORB #4 Rdg Gray File-2 Docket File DEisenhut OELD f
K.'
NRC PDR MFairtile AE0D L PDR RIn S
Dockets flos. 50-321 and Na56 IE 2y A '. c r i c
TS
~~
ACRS-10 t-FSchauer, SEB
~
9S2a-F CTrammell cM n n;aa/@s[lgm IsG Hr. J. T. Beckham, Jr.
4 Vice President - fluclear Generation
/
Georgia Power Company G _
N P. O. Box 4545 Atlanta, Georgia 30302
Dear !!r. Beckham:
Dased on our review of your responses dated Hovenber 4,1980 and June 18, 1901, to our Inspection and Enforcement Bulletin 80-11. Masonry Hall Design, Hg 8,1980, we find that we need the enclosed additional infor-nation for the Hatch fluclear Plant - Units 1 and 2, in order to complete our review. These questions were prepared by the Franklin Research Center of Philadelphia, Pennsylvania, our contractor for this review.
OfB clearance is not required for this request since it is unique to the Hatch plant.
Kindly respond to this request by April 21, 1982.
Sincerely.
TORIG W L31cua af WOM2. szozaa John F. Stolz, Chief Operating Reactors Branch f4 Division of Licensing
Enclosure:
Request for Additional Infomation cc w/ enclosure:
See next page
/
/
/
Wb^
omco 0R.U,4,;.DL,,,,,,,.C.-Q,R. #,4,;DL,,
MFai rtile g..JSto] p 3.fg...../.cb n
su -
8203180505 820304
{
gDRADOCK05000 OFFICIAL RECORD COPY usam mi-m m
Hatch 1/2 Georgia Power Comp 2ny 50-321/366 i
cc w/ enclosure (s):
Mr. James P. O'Reilly, Regional G.'F. Trowbridge, Esq.
Administrator i
Shaw, Pittman, Potts and Trowbridge U. S. Nuclear Regulatory Commission i
1800 M Street, N.W.
Region II Washington, D. C.
20036 101 Marietta Street, Suite 3100 Atlanta, Georgia, 30303 Ruble A. Thomas.,
Vice President P. O. Box 2625 Southern Company Servi ~ces.! nc.
I
}
Birmingham, Alabama 35202 Ozen Batum Charles H. Badger Southern Company Sen vices, Inc.
Office of Planning and Budget Post Office Box 2625 Room 610 Bimingham, Alabama 35202 270 Washington Street S.W.
Atlanta, Georgia 30334 Appling County Commissioners County Courthouse Baxley, Georgia 31513 Mr. L. T. Gucwa Georgia Power Company Engineering Department P. O. Box 4545 Atlanta, Georgia 30302 Mr. Max Manry Georgia Power Company Edwin I. Hatch Plant P. O. Box 442 Baxley, Georgia 31513 Regional Radiation Representative EPA Region IV 345 Courtland Street, N.E.
Atlanta, Georgia 30308 Appling County Public Library 301 City Hall Drive Baxley, Georgia 31513 fir. R. F. Rogers U. S. fluclear Regulatory Commission Route 1, P. O. Box 279 Baxley, Georgia 31513
S t
HATCH NUCLEAR PLANT Enclosure REQUEST FOR ADDITIONAL INFORMATION 1.
In Section 4.3 of Reference 2, the grout used to fill the masonry cells was given a minimum value of 4000 psi for its compressive streng th.
Provide justification for the use of this value.
2.
With respect to interstory drift effects, Section 3 of Appendix F
[7] stated, " examination of the test data indicates that the gross shear strain of a wall is a reliable indicator.' Identify these Also provide and discuss the acceptable level of test cata sources.
strain for unconfined walls.
r#f.W ~
3.
Provide details of modifications for all walls that do not satisfy the design allowables. Technical discussion should be provided detailing how these modifications will correct this deficiency.
Also, provide the modification schedule.
4.
The cata presented in Appendix D [2] is not legible. Supply a legible copy of this appendix.
5.
With regard to the allowable stresses for factored loads, a factor of 1.67 was used for tension, shear, and bond of masonry. The SEB criteria (4) allow factors of 1.3 for shear carried by masonry, 1.5 for masonry tension parallel to the bed joint, and 1.3 for masonry tension, normal to the bed joint. Justify the use of a factor of 1.67.
l 6.
With respect to modes of vibration, Section 5.2.2 of Reference 2 indicated that the first mode of vibration accounts for over 99% of the total moment and displacement of the walls. Provide sample calculations (with different bou'ndary conditions) to justify this position.
7.
Identify the test sources used for evaluating the shear strength of concrete block wells (Section 4 of Appendix F (2]).
8.
Indicate how seismic loads in different directions were accounted for in the analysis.
9.
Indicate whether the out of-plane drift effect was included in the analysis.
10.
Indicate whether the potential for block pullout was considered in the analysis.
o
,-n
P
- =
11.
Justify the formula given in Section 4.1.2 of Appendix E [2] for allowable tension stress in cell grout.
12.
Indicate how equipment weights were accounted for in the seismic analysis.
REFERENCES 1.
" Masonry Wall Design" NRC, May 8, 1980 2.
W. A. Widner (Georgia Power Company)
Letter with enclosures to J. P. O'Reilly (NRC)
November 4, 1980 3.
J. T. Beckham, Jr. (Georgia Power Company)
Letter to J. P. O'Reilly (NRC)
June 18, 1981 Standard Review Plan, Section 3.8.4, Appendix A.
4.
" Interim Criteria for Safety-Related Masonry Ya'll Evaluation" NRC, July 1981 5.
Uniform Building Code Internationsi Conference of Building Officials, 1979 6.
ACI 531-79 and Commentary ACI 531-R-79
" Building Code Requirements for Concrete Masonry Structures" American Concrete Institute, 1979 i
l e
e r
._