ML20236D098
| ML20236D098 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon, 05000000 |
| Issue date: | 12/06/1974 |
| From: | Parr O US ATOMIC ENERGY COMMISSION (AEC) |
| To: | Searls F PACIFIC GAS & ELECTRIC CO. |
| Shared Package | |
| ML20236A877 | List:
|
| References | |
| FOIA-87-214 NUDOCS 8707300300 | |
| Download: ML20236D098 (3) | |
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Docket Fil y RCDeYoung LWR 1-3 Reading FSchroeder
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LWR 1-3 File
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Docket Nos. 50-275 AEC PDR DEisenhut and 50-323 DEC. 0 61974 local PDR RhKlecker OGC R0 (3)
TJHirons DPA11ison WMilson TR Branch Chiefs JPanzarella LWR Branch Chiefs i
Pacific Gas and Electric Company ACRS (16)
JRBuchanan, ORNL
.f AITN: Mr. Frederick T. Searls TBAbernathy, DTIE Vice President 4 Generai. Counsel j
77 Beale Street t
San Franci<ea, California 94106 Gentlemen:
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As a result of our continuing review of the Final Safety Analysis Report f
for Diablo Canyon, Units 1 and 2, we find that additional information is
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required to emplete our evaluation. The specific infomation requested is listed in the enclosure. This matter was discussed with your Mr.
L W. J. Lmiblad on Novmber 25, 1974.
Please inform us as soon as possible after receipt of this letter of your schedule for subnitting this infomation.
Pleas 4 contact us if you have any questions regarding tlw information that 1
has been requested.
Sincerely, Original Signed tif, O. D. Parr Olan D. Parr, Chief Light Water Reactors Project Branch 1-3 Directorate of Licensing
Enclosure:
Request for Additional Information cc:
See page 2 l
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PDR FOIA CONNOR87-214 PDR yy L: LWR 1-3'
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'h-DEC,0 61974 Pacific Gas and Electric a e
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Philip A. Crane, Jr., Esq.
Pacific Gas and Electric Company 77 Beale Street San Frairisco, California 94106 l
I Andrew J. Skaff, Esq.
j California Public Utilities Commission 4
350 }tA111 ster Street San Francisco, California 94102 Mr. Frederick Eissler, President 1
I Scenic Shoreline Preservation l
Conference, 12m.
l 4623 Hore Hesa Drive Santa Barbara, California 93105 Ms. Elizabeth E. Apfelberg 1415 Cazadero San Inis Obispo, California 94301 Ms. Sandra A. Silver l
1315 Cecelia Court 4
l San Inis Obispo, California 93401 d
Mr. John Forster 985 Palm Street San luis Obispo, California 93401 Mr. Lannie Valentine 4580 San Jacinto Atascadero, California 93422 l
Mr. Williant P. Cornwell P. O. Box 453 1
W rro Bay, California 93442 Ifr. W. J. Lindblad, Project Engineer Pacific Gas and Electric Company 77 Beale Street San Francisco, California 94106 a
OPFICS P gyANAMEb
7 REQUEST FOR ADDITIONAL INFORAMTION 6
PACIFIC GAS AND ELECTRIC C04PANY DIABLO CANYON, UNITS 1 AND 2 DOCKET NOS. 50-275 AND 50-323 3.0 DESIGN CRITERIA - STRUCTURES, CGIPONENTS, EQUIPMENT AND SYSTEMS 1
l 3.51 For typical Category I structures, systems and components provide l
the responses obtained at critical locations using modified input response spectra such as the following:
(1)
Parkfield-5,1966, North 85 Eax xalui to 0.50 g peak acceleration.
(2)
Castaic, 1971, South 69 East, scaled to 0.50 g peak acceleration.
The damping values given in Regulatory Guide 1.61 should be used in this analysis.
Compare these responses to the responses obtained using the original input response spectra and original damping values given in the FSAR.
Confirm the adequacy of the design of the typical Category I structures, systems and components under these conditions.
In addition, provide typical floor response spectra generated from the modified input response spectra using the damping values of Regulatory Guide 1.61.
Compare these floor response spectra
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with the floor response spectra obtained using the original input response spectra and damping values given in the FSAR.
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