ML20244A548

Provides Trip Setpoint for Proposed Tech Spec Revision to Incorporate Reactor Coolant Pump Speed Sensing Sys as Addition to Reactor Protection Sys

ML20244A548
Person / Time
Site:	Millstone
Issue date:	03/23/1979
From:	Counsil W NORTHEAST UTILITIES
To:	Reid R Office of Nuclear Reactor Regulation
References
TAC-46174, NUDOCS 7904030327
Download: ML20244A548 (2)

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March 23, 1979 Docket No. 50-336 Director of Nuclear Reactor Regulation Attn: Mr. R. Reid, Chief Operating Reactors Branch #4 U. S. Nuclear Regulatory Commission Washington, D. C.

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Reference:

(1)

W. G. Counsil letter to R. Reid dated March 2,1979.

Gentlemen:

Millstone Nuclear Power Station, Unit No. 2

'Reacter Coolant Pump Speed Sensing System In Reference (1), Northeast Nuclear Energy Company (NNECO) proposed revisions to Technical Spe.cifications to incorporate a reactor coolant pump speed senstag system ae an addition to the Millstone Unit No. 2 Reactor Protection System (RPS). This system will provide protection for the four pump loss of flow incident only.

As also indicated in Rt.ference (1), the trip setpoint had not yet been deter-mined. This value is now provided on the attached Technical Specification Page 2-5.

The setpoint ensures that the four pump loss of flow incident yields acceptable results.

We. trust that with the above information, you will favorably disposition our request in Reference (1).

Very truly yours, NORTHEAST NUCLEAR ENERGY COMPAh7 9904o30399 (bgj/

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W. G. Counsil Vice President Attachment 4

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REGULATORY INFORMA, TION DISTRIBUTION SYSTEM (RIOS)

ACCESSION NBR 7904030327-00C.DATE: 79/03/23 NOTARIZED: NO DOCKET #

FACIL 50 336 MILLSTONE NUCLEAR POWER STATION, UNIT 2, NORTHEAST NU 05000336 AUTH.NAME AUTHOR AFFILIATION COUNSILed.G.

NORTHEAST UTILITIES 4 (

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RECIP.NAME RECIPIENT AFFILIATION f

( /f REID,R.

OPERATING REACTORS ORANCH 4

SUBJECT:

PROVIDES TRIP SETPOINT FOR PROPOSEDTECHSPECR'EdISION OTO 790320 TO INCORPORATE REACTOR COOLANT PUMP SPEED SENSING SYS AS ADDITION TO REACTOR PROTECTION SYS.

l DISTRIBUTION CODE A001S COPIES RECEIVED:LTR aL ENCL l_

SIZE Sk TITLE: GENERAL DISTRIBUTION FOR AFTER ISSUANCE OF OPERATING LIC j

NOTES:

RECIPIENT COPIES RECIPIENT COPIES 10 CODE /NAhE LTTR ENCL ID CODE /NAME LTTR ENCL ACTION:

05 BC oggf.q 7

7 1NTERNALI 01 REG FILE 1

1 02 NRC POR 1

1 12 I&E 2

2 14 TA/E00 1

1 15 CORE PERF BR 1

1 16 AD SYS/PROJ 1

1 17 ENG'4 BR 1

1 18 REAC SFTY BR 1

1 l

19 PL'4NT SYS BR 1

1 20 EEB 1

1 21 EFLT TRT SYS 1

1 22 BRINKMAN 1

1 i

EXTERNAL: 03 LPOR 1

1 04 NSIC 1

1 23 ACRS 16 16 TOTAL NUMBER OF COPIES REQUIRED: LTTR 38 ENCL 38 L

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