ML20236P438

Evaluation of Applicant 760525 Request for Extension of CPPR-39 to 770101

ML20236P438
Person / Time
Site:	Diablo Canyon
Issue date:	07/06/1976
From:	Allison D, Stolz J Office of Nuclear Reactor Regulation
To:
Shared Package
ML20236J368	List: IA-87-214, Discusses ACRS 92nd Meeting on 671207-09.ACRS Completed Review of PG&E Application for Const of Nuclear Unit at Diablo Canyon Site.Facility Can Be Constructed W/O Risk to Public Health & Safety ML20236J366 ML20236J587 ML20236J622 ML20236J671 ML20236J804 ML20236J841 ML20236J985 ML20236K008 ML20236K057 ML20236K327 ML20236K351 ML20236K384 ML20236K422 ML20236K563 ML20236L228 ML20236L279 ML20236L316 ML20236L364 ML20236L420 ML20236L474 ML20236L565 ML20236L647 ML20236L689 ML20236L706 ML20236L724 ML20236L756 ML20236L787 ML20236L806 ML20236L866 ML20236L901 ML20236L922 ML20236L931 ML20236L986 ML20236M007 ML20236M024 ML20236M065 ML20236M681 ML20236M725 ML20236M744 ML20236M771 ML20236M777 ML20236N015 ML20236N032 ML20236N085 ML20236N115 ML20236N139 ML20236N193 ML20236N208 ML20236N255 ... further results
References
FOIA-87-214 NUDOCS 8708120363
Download: ML20236P438 (2)

Text

- - _ _ . _ _ . -

e 4

^

. cM UNITED STATES

[ ,' #g NUCLEAR REGULATORY COMMISSIGel WASHINGTON, D. C. 2Gs5

1. o Ek o, y'rs E  ;

g . .%/

'(#a ,

I Docket No. 50-275 l

l EVALUATION OF REQUEST FOR EXTENSION OF lHe CONSTRUCTION FERN!T FOR lH I DIAeLO CANYON NUCLt AR F07.tR PLAE UNIT-i introduction l

On May 25, -i976, Pacific Gas and Electr!c Company (PG&E) filed a request l

for en extension of the completion date of Construction Permit No. CPPR-39 l

from Jul y 1,1976 to January 1,1977. In the request for extension, PG&E stated that additional time would be required to evaluate the plant's l

capability to withstand an earthquake on the Ibsgri f ault and to concl ude ,

l the 1icensing process.

Discussion 1

The Constrt,ction Permit for Unit I, CPPR-39, was issued on April 23, 1968 and was last modi fied by the Commission's Order dated February 25, 1976, which extenced the latest completion date to July 1,1976. j l ,

in the application for extension PG&E stated that on April 29,1976 the j United States Geological Survey (USGS) issued its review of the geological  !

and seismolcgic data relevant to the Diablo Canyon Units in which it was  !

concluded inat an eartnquake occurring anywhere along the Fbsgri Fault .

should be censidered in addition to those earthquakes previously censidered l in the design of the units. On May ll, 1976 the Commission's Staff issued l Supplement %. 4 to the Safety Evaluation Report which specified an ef fective horizontal ground acceleration to be used for the development of design response spectra for the plant based upon the earthquake postulated by the '

USGS.

PG&E f urther stated that additional time will be required to permit PG&E to evaluate the plant's capability to withstand the new earthquake, for the Commission to review and eval uate PG&E's work, and to concl ude the licensing process. Accordingly, PG&E requested a six months' extension of Construction Permit No. CPPR-39 to change the latest completion date from July 1,1976 to Januery 1,1977. ,

8708120363 870729 PDR FOIA CONNORB7-214 PDR ,

~

Conclusion The Commission's Staf f has reviewed the information provided in the applicant's submittal, and we conclude that the f actors discussed above are reasonaDie and constit.te good cause for delay; and that extension of construction of Unit I for six months is justifiable, i

As a result of the staf f's review of the Final Safety Analysis Report' to date, and c:7sidering the nature of the delays, we have identif!ed no area of significant safety considerations in connection with the extension of the construction permit completion dates for Diablo Canyor. Unit 1.

The staf f finds that this action does not involve a significant hazceds consideration, and that good cause exists for the issuance of an Order extending t e completion date, Accordingly, issuence of an Order extending the latest completion date for constructic . of Diaolo Canyon Uni t 1, as set forth in CPPR-39, to January 1, 1977 is reesonaDie and should be authorized.

f & -i.m D, P. Allison, Project Manager Light Water Reactors Branch No, 1 Division of Project Management Nh A -

J n Fr Stolz, Cnief igy Water Reactors Branch No,1 D4 vision of Project Management Dated: . . : $ 1975

.___ - __ _ -