ML17278A588

Informs That Need No Longer Exists for Revised Stability Analysis,Per License Condition 2.C.(10).Jul 1985 Tech Spec Change Removes Areas of Potential Concern & Satisfies License Condition

ML17278A588
Person / Time
Site:	Columbia
Issue date:	01/27/1986
From:	Sorensen G WASHINGTON PUBLIC POWER SUPPLY SYSTEM
To:	Adensam E Office of Nuclear Reactor Regulation
References
GO2-86-104, NUDOCS 8602050119
Download: ML17278A588 (6)

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ACCESSION NBR:

F*CIL:50-397 AUTH. NAME SORENSEN> Q. C.

RECIP. NAME ADENSAM> E. G.

REGULATORY ORMATION DISTRIHUTlON SY M (RIDS) 8602050119 DOC. DATE: 8b/Ol/27 NOTARIZED:

NO DOCKET 8 WPPSS Nuclear Prospect>

Unit 2I Washington Public Powe 05000397 AUTHOR AFFILIATION Washington Public Power Supply System RECIPIENT AFFILIATION HWR ProJect Directorate 3

SUBJECT:

Informs that need no longer exists for revised stability anal/siss per License Condition

2. C. (10). Jul 1985 Tech Spec change removes areas of potential concern 8< satisf ies license condition.

DISTRISUTION CODE:

A0010 COPIES RECEIVED: LTR I

ENCL +

SIZE:

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OR Submittal:

General Distribution NOTES OL: 12/20/83 05000397 RECIPIENT ID CODE/NAME HWR ADTS BWR EH HWR FOB BWR PSB COPIES LTTR ENCL RECIPIENT ID CODE/NAME BWR PD3 PD 01 BWR EICSB HRADFUTE> J HWR RSB COPIES LTTR ENCL INTERNAL: ACRS ELD/HDS2 NRR/

EXTERNAL: 24X LPDR NSIC RR*H 04 03 05 ADM/LFMB NRR/DHFT/TSCB NRR/ORAS RQN5 EQZ<G BRUSKEI S NRC PDR TOTAL NUMBER OF COPIES REQUIRED:

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Washington Public Power Supply System 3000 George Washington Way P.O. Box 968 Richland, Washington 99352-0968 (509)372-5000 Januaxy 21, 1986 602-86-104 sso2osoii9 86osa7 PDR ADQCK 05000M'7 P

PDR Docket No. 50-397 Director of Nuclear Reactor Regulation Attention:

E.G.

Adensam, Project Director BWR Project Directorate No.

3 Division of Licensing U.S. Nuclear Regulatory Commission Washington, D.C.

20555

Subject:

NUCLEAR PLANT NO.

2 OPERATING LICENSE NPF-21 LICENSE CONDITION 2.C.(10)

Reference:

1)

Licensing Condition 2.C.(10),

Washington Public Power Supply System, Docket No.

50-397, WPPSS Nuclear Plant No. 2, Facility Operating License, License No.

NPF-21.

2)

Section 4.4.4, Thermal-Hydraulic Stability Safety Evaluation Report related to the operation of WPPSS Nuclear Plant No. 2, Docket 50-397, NUREG-0892, March 1982.

License condition 2.C.(10) to the WNP-2 operating license states that "prior to startup following the first refueling outage, the licensee shall provide for NRC staff review and approval a revised stability analysis."

The Supply System considers that this license condition has been satisfied.

In July,

1985, the Supply System applied for and obtained modification of the WNP-2 technical specifications to include surveillance require-ments for detecting thermal-hydraulic instabilities and specifying the remedial operator actions for responding to them (License Amendment No.

16).

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Ms. E.

G. Adensam Page Two LICENSE CONDITION 2.C.(10)

(NPF-21)

Criterion 12, of 10CFR50, Appendix A states, in part:

The reactor core and associated coolant, control and protection system shall be designed to assure that power oscillations which can result in condi-tions exceeding specified acceptable fuel design limits are not possible or can be reliably and readily detected and suppressed.

Adoption of the stability surveillance technical specifications meets this criteria.

The Supply System has evaluated the implications of thermal-hydraulic stability based on the General Electric recommendations given in SIL 380 Rev.

1, which formed the basis for the above mentioned technical speci-fication changes.

We have determined that the implemented changes alleviate any concerns relating to the thermal-hydraulic stability of WNP-2.

The NRC staff has concurred in this determination.

The NRC Safety Evaluation Supporting Amendment No.

16 notes that "The WNP-2 submittal provides an improved means for maintaining thermal-hydraulic stability by restricting power level to values that depend on flow rate instead of a constant upper limit."

Based on the above discussion, there no longer exists a need for a revised stability analysis for WNP-2 because the above mentioned tech-nical specification changes remove any areas of potential concern, thereby satisfying the intent of the subject license condition.

Very truly yours, G.

C. Sorensen (MD 280)

. Manager, Regulatory Programs WCW:jmm cc:

RC Barr BPA JO Bradfute NRC JB Martin NRC HV L'evell BPA NS Reynolds BLCPGR NRC Site Inspector

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