ML20093L826

Application for Amend to Licenses NPF-4 & NPF-7,revising Tech Specs Re Reactor Trip Sys Instrumentation Trip Setpoints.Fee Paid

ML20093L826
Person / Time
Site:	North Anna
Issue date:	10/15/1984
From:	Stewart W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	Harold Denton, John Miller Office of Nuclear Reactor Regulation
Shared Package
ML20093L829	List: ML20093L826 ML20093L833
References
523, NUDOCS 8410190217
Download: ML20093L826 (4)

Text

3 VIROINIA ELECTRIC AND Powan COMPANY

. RIcnwoxn, VIRGINIA 202 G1

.' W. L. Srz n er

- Vics Passannwr October 15, 1984 wuci.=in o,== mon.

Mr. Harold R. Denton, Director Serial No. 523 Office of Nuclear Reactor Regulation N0/JHL:acm

' Attn:

'Mr. James R. Miller, Chief Docket Nos. 50-338 Operating Reactors Branch No. 3 50-339 Division of Licensing License Nos. NPF-4

'U. S. Nuclear Regulatory Commission NPF-7 Washington, D. C. 20555 Gentlemen:

VIRGINIA ELECTRIC AND DOWER COMPANY NORTH ANNA POWER STATION UNIT NOS. 1 AND 2 PROPOSED TECHNICAL SPECIFICATION CHANGES

-Pursuant to 10 CFR 50.90, the Virginia Electric and Power Company requests an amendment in the form of_ changes to the Technical Specifications to Operating 1 Licenses NPF-4 and NPF-7, for. North Anna Unit Nos. I and 2.

The proposed Technical Specification changes will revise the reactor trip system instrumentation trip setpoint for intermediate range, neutron flux from leg than or equal to 25% of rated thermal power to less than or equal to 4 x 10 amps.

-In addition, the Bases for the intermediate range,- neutron flux trip must be revised.

These changes are necessary because changes in core loading patterns and control rod position effects neutron flux at the excore

-detectors.- It is not possible to calibrate the intermediato range detectors to'directly measure percent of rated thermal power.

The proposed Technical Specification changes for North Anna Unit No. I are provided 'in l Attachment 1.

The proposed Technical Specification changes for North Anna Unit No. 2 are provided 'in Attachment 2.

A safety evaluation discussing the proposed Technical Specification changes is provided in.

This request has.been refiewed and approved by the Station Nuclear Safety and Operating Committee and the Safety Evaluation and Control Staff.

It has been

' determined that this request does not involve an unreviewed safety question as defined in 10 CFR 50.59.

~ lt has been determined that these proposed changes do not pose a significant

' hazards consideration as defined in the Federal Register, dated April 6, 1983, Example (vi) which partially states, "A change which either may result in some g

increase to the probability or consequences of a previously analyzed accident hcph or may reduce in some way,a safety margin, but where the results of the change are clearly within all acceptance criteria with respect to the system or l\\

component specified.in the Standard Review Plan".

The proposed changes have 8410190217 341015 eb c

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[ :hisORMIA ELacraic Awn Powra Courawr to Harold R. Denton gg s

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> b'een'. reviewed Lwith respect - to the accident analyses in the North Anna UFSAR and Enone are. effected.

The UFSAR. analyses are in accordance with the

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acceptance criteria of-. Standard Review Plan 7.2, therefore these changes do h'-

not-pose a significant hazards consideration.

. Wei have s reviewed th'is : request' ' in accordance with the criteria in 10 CFR 170.12.

A voucher l check in the amount of $150 is enclosed as an application g.'

. fee.

V y truly yours, f

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s W. L. Stewart Attachments

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. Proposed Technical Specification Changes - Unit 1 2.'

Proposed Technical Specification Changes - Unit 2

' 3.

--Safety Evaluation

- 4.

Voucher Check for $150.

cc: ' Mr. James P. O'Reilly.

Regional Administrator' Region II

' Mr.

M." W. Branch ~

NKt, kesident' Inspector North Anna Power Station Mr. Charles Price Department of. Health 109 Governor-Street Richmond, Virginia 23219 E

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'C(MMONWEALTH OF VIRGINIA ).

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CITY OF RICHMOND

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The foregoing document was acknowledged before me, in and for. the City and Commonwealth _ aforesaid, today by W.

L.

Stewart who is Vice President Nuclear Operations, of the Virginia Electric and Power Company.

He is duly authorized to execute and file the foregoing document - in behalf of that Company, and the statements in the document are true to the best of his knowledge and belief.

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Acknowledged before me this /f My Commission expires:

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Notary Public (SEAL) s/ col I_

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