ML20236P423
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UNITED STATES G.
AMERICA e
NUCLEAR REGULATORY COMMISSION I
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In the Matter of
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PACIFIC GAS AND ELECTRIC COMPANY
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Docket No. 50-275-OL Unit 1
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Diablo Canyon Site
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j Pursuant to 10 CFR 50.55 (b) Pacific Gas and Electric Company
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(PGandE) hereby requests the Commission to extend the completion date l
of Construction Permit No. CPPR-39 from July 1, 1976 to January 1, l
1977.
In an Order dated February 25, 1976 the Commission, pursuant to a timely request by PGandE, extended Construction Permit No. CPPR-39 from July 1, 1975 to July 1, 1976.
Subsequently, on April 29, 1976 the United States Geological Survey (USGS) issued its review of the geologic and seismologic data relevant to the Diablo Canyon Units in which it was concluded that an earthquake occurring anywhere along the Hosgri Fault should be considered in addition to those earthquakes previously con-sidered in the design of the units.
On May 11, 1976 the NRC Staff issued Supplement No. 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.
Additional time will be required to permit PGandE to evaluate the plant's capability to withstand the new earthquake, for the Commission 870B120354 B70729 PDR FOIA CONNOR 87-22 4 PDR
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l to review and evaluate PGandE's work, and to conclude the licensing process.
Accordingly, PGandE requests a six mor.ths ' exter.usion of Construction Permit No. CPPR-39.
l Subscribed in San ' Francisco, California, this 25th. day of l
l May. 1976.
I Respectfully submitted, I
PACIFIC GAS ANO ELECTRIC COMPANY B
J. D. WortV)hgton Senior Vice President l
JOHN C. MORRISS EY PHILIP A. CRANE, JR.
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BRUCE R. WORTHINGTON j
Attorneis for Pacific i
Gas n
Electric mp i
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By j{)
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Philip CraneI Jr.
Subscribed and sworn to before me this 2 5th day of May, 1976 J
s Theodora Cooke, Notary Public in and for the City and ' County of San Francisco, State.of California My Commission expires January 28, 1977 e
d PACIFIC GAS AND ELECTRIC COSPANY (DI AE',0 CANYON NUCLEAR POWER PLANT, UNIT l }
DOCKET NO. 50-275 ORDER EXTENDING CONSTRUCTION COMPLETION DATE Pacific Gas and Electric Company is the holder of Construct.lon Permit CPPR-39 issued by the Nuclear Regulatory Commission on April 23, 1968 for construction of the Dicblo Canyon Nuclear Power Plant, Unit I, presently under construction on the applicant's site in San Luis Obispo l
l County, Cali fornia.
l On May 25,1976, Pacific Gas and Electric Company filed a request for en extension of the completion date.
1 On April 29, 1976 the United States Geological Survey (USGS) issued i
its review of the geological and seismologic data re!evant to the Diablo Canyon Units in which it was concl uded that an earthquake occurring anywhere along the Hosgri Fault should be considered in addition to those earthquakes previously considered in the design of the units. On May 11,1976 the I
Commission's Staf f issued Supplement No. 4 to the Safety Evaluation Report which specified an ef f ective horizontal ground acceleration to be used for the development of design response spectra for the plant based upon the earthquake postulated by the USGS.
Additional time will be required to permit PGandE to eval uate the plant's capability to withstand the new earthquake, for the Commission to review and eval uate PGandE's work, and to concl ude the licensing process.
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2-i This action involves no significant hazards consideration; good cause I
has been.shown for the delay; and the requested extension is for a l
l reasonable period, the bases for which are set for?., in a staf f eval uation I
dated l
For f urther details with respect to this action, see (1) the applicant's l
r equest for extension of the completion dates datec May 25,1976, and (2) the Staf f's related evaluation, all of which are available for public inspection at the Commission's Public Document Roo? and at the Local Public Document Rooms.
IT IS HEREBY ORDERED THAT THE latest completion date for CPPR-39 is extended f rom Jul y 1,1976 to January 1,1977.
FOR THE NUCLEAR REGULATORY CDMMISSION R. C. DeYo Assi ant Director 3,
for Light Water Reactors Division of Prc;ect Management Date of issuance:
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