ML20236N321

Forwards Three Pages Inadvertently Omitted from Util 871030 Response to NRC Request for Addl Info Re Proposed Amend 147 to License DPR-54

ML20236N321
Person / Time
Site:	Rancho Seco
Issue date:	11/09/1987
From:	Croley B SACRAMENTO MUNICIPAL UTILITY DISTRICT
To:	Miraglia F Office of Nuclear Reactor Regulation
References
DTS-87-105, TAC-63030, NUDOCS 8711160113
Download: ML20236N321 (4)

Text

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SACRAMENTO MUNICutAL UTILITY DISTRICT O P. O. Box 15830,' Sacramento CA 95852-1830,(916) 452 3'211 '

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AN ELECTRIC SYSTEM SERVING THE HEART OF CALIFORNIA

! j L' NOV 0 9 1987 DTS87-105.

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. U. S., Nuclear Regulatory Commission Attn: Frank J. Miraglia, Jr.

Associate Director for Projects

-Philips Bldg.

7920 Norfolk Avenue l Bethesda, MD 20014 )

DOCKET 50-312 RANCHO SECO NUCLEAR GENERATING STATION LICENSE NO. DPR-54 TRANSMITTAL OF MISSING PAGES  ;

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Reference:

Request for Additional Information, Proposed Amendment No.147, i (AGM/NPP 87-348, October 30, 1987) )

.i Dear Mr. Miraglia.

It has been discovered that three pages were inadvertently omitted from our transmittal of the referenced letter.  !

l Enclosed are the missing pages. j i

We are sorry for any inconvenience this omission may have caused you. ]

1 Please contact me if you have any questions. Members of your staff with j questions requiring additional .information or clarification may contact 1 Mr. Vern Grayhek at (209) 333-2935, extension 4916. I Sincerely,

'j Bob Croley j Director of Technical Services j cc: G. Kalman, NRC, Bethesda w/atch )

A. D'Angelo, NRC, Rancho Seco w/atch  !

J. B. Martin, NRC, Walnut Creek w/atch 8711160113 g71109 s\

PDR ADOCK 05%{2 P-RANCHO SECO NUCLEAR GENERATING STATION O 1444o Twin Cities Road, Herald, CA 95638 9799;(209) 333-2935

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RESPONSE TO NRC QUESTION QUESTION. 7 i

ENCLOSURE S - DESCRIPTION OF THE DISTRIBUTION SYSTEM .

1 Were all the new loads added to the voltage ~ study which was approved in 19837 ,

Confirm the assumption or submit the new study.

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RESPONSE

i All the new loads that have been identified have been added to the voltage study. It should be noted that no significant loads were added during this i outage. New power sources and capacity were added this outage.

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j .c RESPONSE IL 'liRC QUESTIONS

'0VESTION:

-ECN'A-3748, REY. 5 (1) Page 7' (h) - Reg. Guide 1.9 position' 4, requires f requency restored to within 2% of nominal and voltage witnin 10% of nominal within 60% of each load sequence time interval . Also, there is a requirement for speed excursion and overspeed trip in this position. Confira Rancho Seco design compliance with these requirements.

RESPCNSE:

l Ine TDI diesel generators were purchased to comply witn R. G.1.9, Rev. 2.

l Final. testing in Rancho Seco - Special Test Procedure (STP) No. 961 will determine actual frequency, voltage, and engine speed responses statea in R.

< G.1.9, Rev . 2, Section C .4.

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30 90 70 Po O O O O ,

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