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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J 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

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

Reference:

Request for Additional Information, Proposed Amendment No.147, i

(AGM/NPP 87-348, October 30, 1987)

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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.

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

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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

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A. D'Angelo, NRC, Rancho Seco w/atch J. B. Martin, NRC, Walnut Creek w/atch 8711160113 g71109 s\\

ADOCK 05%{2 PDR 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.

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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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.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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