ML20236D000

Forwards Request for Addl Info Re FSAR for Diablo Canyon. Response Requested as Soon as Possible

ML20236D000
Person / Time
Site:	Diablo Canyon, 05000000
Issue date:	02/12/1975
From:	Parr O Office of Nuclear Reactor Regulation
To:	Morrissey J PACIFIC GAS & ELECTRIC CO.
Shared Package
ML20236A877	List: ML20236A874 ML20236A896 ML20236A920 ML20236A950 ML20236A959 ML20236A975 ML20236B012 ML20236B016 ML20236B024 ML20236B067 ML20236B072 ML20236B116 ML20236B278 ML20236B286 ML20236B312 ML20236B315 ML20236B345 ML20236B356 ML20236B362 ML20236B403 ML20236B420 ML20236B436 ML20236B440 ML20236B476 ML20236B480 ML20236B506 ML20236B514 ML20236B522 ML20236B539 ML20236B547 ML20236B550 ML20236B560 ML20236B571 ML20236B594 ML20236B612 ML20236B630 ML20236B635 ML20236B650 ML20236B655 ML20236B670 ML20236B686 ML20236B695 ML20236B701 ML20236B705 ML20236B708 ML20236B726 ML20236B737 ML20236B748 ML20236B755 ML20236B793 ... further results
References
FOIA-87-214 NUDOCS 8707300267
Download: ML20236D000 (3)

Text

4:

a me rs 0%e 4

e Distribution:

NRC PDR E (3)

Docket Nos. 50-275t/ Local PDR DPAllison and 50-323 FEB 121975 Docket File TJHirons LWR l-3 Reading VHWilson LWR 1-3 File WPGammill RCDeYoung HRDenton VAMoore LWR 1 Branch Chiefs Pacific Gas and Electric Company FSchroeder JPanzarella ATTH: Mr. John C. Morrissey AKenneke ACRS (12)

Vice President & General Counsel RWKlecker JRBuchanan, ORNL 77 Beale street MWilliams TBAbernathy, DTIE Ean Francisco, California 94106 ELD Gentlemen:

On the basis of our review of the Diablo Canyon FSAR, we find that additional information will be required in order to complete our evalua-tion of the geology and seismology information. The enclosure describes the additional'information that will be required. This matter was discussed with your representatives at our meeting of February 7,1975.

In order to minimize the resultant delays in our review schedule, we will need the information described in Enclosure No.1 as soon as -

possible. Please let us know when you will be able to provide this  !

information. We will then reschedule the completion of our review. j l

Please contact us if you have any questions about this matter. )

sincerely,

)

, c .-,,- : LT:..f. Ey,d 1

Olan D. Parr, Chief Light Water Reactors Project Branch 1-3 Division of Reactor Licensing

. Encicouro Request for Additional Information oo see page 2 f ,rf i

( 3) 8707300267 870721 PDR FOIA PDR CONNORB7-214 n RL: LWR 1.-3 TRfS TR: S l

o, , .c . ,

.. ._. jp=.

5 .2, ..

~- RLimRg3

- {jk -

/~V ~ Q

~

DPA111 son:cl 5 WG 1 H n ODParr Uh p ats >

h/){/75~ "2/jj/15'"

~if 75~ "275"l15~ *T\

7.m 47C418 (iter. 9-55 ) A1:CM O240 D u, s. covseNurNT PMWTING QFFICtg 197e.826-480

4 w . . . , ,

Pacific Gas & Electric Co.

ocs. Philip A. Crane, Jr., Esq.

Pacific Gas and Riectric Company 77 Beale Street San Francisco, California 94102 4 Andrew J. Skaff, Esq.

California Public Utilities Comission 350 McAllister Street San Francisco, California 94102 Mr. Frederick Eissier, President Scenic shoreline Preservation Conference, Inc.

4623 More Mesa Drive Santa Barbara, California 93401 Ms. Elizabeth E. Apfelberg-1415 Casadero San Luis Obispo, California 93401 Ms. Sandra A. Silver 1315 Cecelia Court l San Luis Obispo, California 93401 Mr. John Forster 1 985 Palm Street San Luis Obispo, California 93401 Mr. Ionnie Valentine i 4590 San Jacinto Atascadero, California 93422 Mr. William P. Cornwell P. O. Box 453 Morro Bay, California 93442 .

Mr. W. J. Lindblad, Project Engineer i Pacific Gas and Electric Company {

-l 77 Beale Street San Francisco, California 94106 0F F'C ' * .-.... _.

oVaN* ME

• _

9 oaya > .

TT u,s. novsamurut Paintine t rFicsa tava.sss.tes Foran AFC.313 (Rev. 9 53) ASCM 01e0

--___________-__-_____-__--_-__-_-___:_____-_____-_-_-_-_-__-_____-- _ .- _. ._ -_-----____3

...> .ce ENCLOSURE NO. 1 REQUEST FOR ADDITIONAL INFORMATION PACIFIC GAS AND ELECTRIC COMPANY DIABLO CANYON , UNITS 1 AND 2 DOCKET NOS. 50-275 AND 50-323 I

2.17 Provide additional discussion and arguments for determining the maximum earthquake that can be expected on faults of various ranks within the J San Andreas system. Relate the discussion to historic seismicity.

I 2.18 Provide additional documentation, including seismic reflection profiles, on the intersection of the Hosgri Fault zone with the Transverse Range i

Faults. Include geologic maps southward of those provided in the FSAR j showing the structural relationships cf the Transverse Range f aults and

' structures to the faults and structures having a northwest trend. 1 2.19 Provide additional documentation, including seismic profiles, on the ,

northern reaches of the Hosgri Fault zone. Include a fuller development I of your views on the structural relationship of the Hosgri Fault to the San Simeon Fault.

2.20 Provide additional informatio, on the location of the 1927 event, together with its probab.Le mechanism. Discuss probable relationships of this event to the geologic structure in the region.

l 2.21 Provide your evaluation of t'he maximum credible earthquake on the Hosgri Fault Zone. Assuming this event ocr rs along the segment of the Hosgri ,

Fault Zone nearest the site, evaluate its response spectrum at the site '

and compare it with the design response spectrum.

O l