ML18116A315

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Notifies of Review of Util Analysis,Data & Test Program Re Mod to 480-volt Class IE Power Sys.Proposed Mod Ensures Capacity of Sys to Meet Safety Functions.Ser Encl
ML18116A315
Person / Time
Site: Surry Dominion icon.png
Issue date: 07/10/1979
From: Lainas G
Office of Nuclear Reactor Regulation
To: Schwencer A
Office of Nuclear Reactor Regulation
Shared Package
ML18116A316 List:
References
NUDOCS 7908140097
Download: ML18116A315 (3)


Text

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JUL 1 Q 1979 DISTRIBUTION Ce11tral Files NRC PDR PSB Reading MEMORANDUM FOR:

A. Schwencer, Chief 9, Operati,ng Reactors Branch fll, DOR FROM:

G.- Lairias~,Chief, Plant Systems Branch,.DOR

SUBJECT:

480

Plant Facility: Surry Unit l Licensee: Virginia Electric and Power Company (VEPCO)

Docket No. :. 50-280 Project Ma*nager:

D. Neighbors Review Status: Complete

  • The Plant Systems'Branch has reviewed the licensee's analysis, data and test program Sijbmitted to NRG to establish adequacy of their proposed modification to the 480V Class IE power syseems.

We conclude that the proposed modification ensures,the capability of the 480V Class IE systems to meet its safety functions and therefore is acceptable.

Our Safety Evaluation* Report is enclosed.

It is also to be noted that a similar modification plan for the 480V Cl ass IE system of Surry Unit 2, which is presently shutdown for

  • refueling, shall be submitted in the near future.

The licensee has

  • agreed to keep Unit 2 down until its proposed modification and :test program is approved by NRG.

G. Lainas, Chief Plant Systems Branch I

I Division of Operating Reactors Y~.tf

Enclosure:

As stated

Contact:

I. Ahmed X928077

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-e MEMORANDUM FOR:

A. Schwencer, Chief, Operating Reactors Branch #1, DOR FROM:

G. Lainas, Chief, Plant Systems Branch, DOR

SUBJECT:

480 V CLASS IE SYSTEM MODIFICATION (TAC 11862)

Plant Facility: Surry Unit l Licensee:

Vi-rginia Electric and Power Company (VEPCO)

Do~ket No.:

50-280 Project Manager:* D. Neighbors Review Status: Complete The Plant Systems Branch has reviewed the licensee's analysis, data and test program submitted to NRC to establish adequacy of their proposed modification to the 480V Class IE power systems.

We con~lude that the proposed modification ensures the capability of the 480V Class IE systems to meet its safety functions and.therefore is a~ceptable.

Our Safety Evaluation Report is enclosed.

It is also to be noted that a similar modification plan for the 480V Class IE system of Surry Unit 2, which is presently shutdown for refueling, shall be submitted in the near future.

The licensee has agreed to keep Unit 2 down until its proposed modification and_ test

  • program is approved by NRC.

Enclosure:

f:i..s stated

Contact:

.:. * /J..

X-28077 cc:

See next p_age Q~~*t ct1 Lainas, Chief Plant Systems Br nch Division of Operating Reactors

cc w/enclosure:

D. Eisenhut R. Vollmer B. Grimes G. Lainas D. Tandi D. Neighbors M. Chiramal I. Ahmed e