ML19319E327

Order Extending Const Completion Date from 731231 to 740601

ML19319E327
Person / Time
Site:	Rancho Seco
Issue date:	12/19/1973
From:	Anthony Giambusso US ATOMIC ENERGY COMMISSION (AEC)
To:	US ATOMIC ENERGY COMMISSION (AEC)
Shared Package
ML19319E325	List: ML19319E324 ML19319E327
References
NUDOCS 8004040633
Download: ML19319E327 (1)

Text

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;;.r LSACRMIENTO MUNICIPAL UTILITY DISTRICT

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Rancho Seco Nuclear Generating Station, Unit No. 1

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DOCKET No. 50-312_

9" ORDER ES~ RENDING CONSTRUCTION COMPLETION DATE

.:Eu Sacramento Municipal Utility District is 'the holder of'. Provisional

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E Construction Permit No. CPPR-56 issued by the Commission on October 11, 1968,

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g for construction of Rancho Seco Nuclear Generating Station, Unit No.1 2

presently.under construction at the Company's site in Southeast Sacramento

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County, 25 miles SE of Sacramento, California.

.g si On October 8,1973, the Company filed a request for an extension of sh.h the:cocpletion date because construction has been delayed due to:

(1) construction schedule, (ii) labor production, (iii) design modifications.

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cnd (iv) late delivery of equipment. This action. involves no significant j

hazards consideration; good cause has been shown for the delay; and the The bases for this requested extension is for a reasonable period.

,dctermination are set forth in a staff evaluation dated December 14, 1973.

.r IT IS HEREBY ORDERED THAT the latest completion date for CPPR-56 is extended from December 31, 1973 to September 30, 1974, with the earliest completion date being June 1,.1974.

FOR THE ATOMIC ENERGY C0!D1ISSION Original Signed by

' A.Glambusso A. Gintbusso, Deputy Director for Reactor Projects Directorate of Licensing

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Date-of'Iscuance: sEC 13 G73

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DEC 141973 EVALUATION OF REOUEST FOR EXTENSION OF

'EP PROVISIONAL CONSTRUCTION PEPJ4IT NO. CPPR-56

'95 FOR THE RANCHO -SECO UNIT 1 NUCLEAR PLAh7 N

DOCKET NO. 50-312 g

Introduction On October 8, 1973, the Sacramento Municipal District filed a request-for an extension of the completion date for the construction of the Rancho

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Seco Unit 1 Nuclear Plant. The applicant states that the completion of construction is estimated to be delayed from December 31, 1973 to June 1, 1974, and requests an extension of the expiration date to Septe=ber 30, 1974.

The staff finds that the significant delays in the Rancho Seco Unit 1 construction were due to, among other things, the following:

1.

The significant underestication of the original construction schedule when compared to present knowledge of actual construction schedule time and experience gained in making more realistic estimates.

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The lower productivity of labor than anticipated for nuclear construction.

This lower productivity is attributed to the increased complexities of nuclear construction and the increasing emphasis on quality control.

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The lack of sufficient numbers of qualified welders. Due to the high standards imposed on the project, fewer numbers of welders are being qualified to work on the project.

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Design modifications which included a changeover from mechanical forced draft cooling towers to natural draft hyperbolic cooling towers and increasing the capacity of the radioactive weste system.

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Issuance of new AEC safety guides and regulations during the construction phase required that additional testing and reanalyses of components be performed resulted in a delay in the delivery of equipment which $n turn caused a delay in the construction schedule.

We conclude that the above factors are beyond the applicant's control, are reasonable and constitute good cause for delay. The staff finds that a'n extension'of nine months ~is a reasonable period of time to allow for contingencies in construction beyond the scheduled fuel loading date of June 1, 1974.

As a result of the staff's review of the FSAR to date and considering the nature of the delays, we have identified no area of significant safety considerations in connection with the extension of the construction permit completion date.

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DEC 14 g The staff finds that this action does not involve a significant hazards

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. consideration, and that good cause exists for the issuance of an order

extending the completion date.-

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Accordingly,. issuance of an order extending the latest completion date for the construction of the Rancho Seco Unit 1 Nuclear Plant'as presently set forth in Construction Permit No. CPPR-56, to. September 30, 1974, is 7

reasonable and should be authorized.

bed. S ik af B. C. Buckley, Project Manager Pressurized Water Reactors Br. No. 4 Directorate of Licensing

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%fd/b$$V A. Schwencer, Chief Pressurized Water Reactors Br. No. 4 Directorate of Licensing-

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