ML20006F298

Application for Amend to License DPR-40,changing Tech Specs Re Limiting Condition for Operation of Auxiliary Feedwater Sys

ML20006F298
Person / Time
Site:	Fort Calhoun
Issue date:	02/21/1990
From:	OMAHA PUBLIC POWER DISTRICT
To:
Shared Package
ML20006F297	List: ML20006F296 ML20006F298 ML20006F346
References
NUDOCS 9002270361
Download: ML20006F298 (3)

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'BEFORE THE UNITED STATES l

l NUCLEAR REGULATORY COMMISSION p

In the Matter of )  ;

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Omaha Public Power District ) Docket No. 50-285 (Fort Calhoun Station )

Unit No. 1) )

i APPLICATION FOR AMENDMENT 0F OPERATING LICENSE ,

H Pursuant to Section 50.90 of the regulations of the U. S. Nuclear Regulatory Commission ("the Commission"), Omaha Public Power District, holder of facility Operating License No. DPR-40, herewith requests that 7 the Technical Specifications set forth in Appendix A to that License be  !

i amended to change the Limiting Conditions for Operation of the Auxiliary ,

feedwater System._ f The proposed changes in Technical Specifications are discussed in j L Attachment A to this Application.- A Discussion, Justification and no ,

Significant Hazards Consideration Analysis, which demonstrates that the proposed changes do not' involve significant hazards considerations, is appended in Attachment B. The proposed changes _in specifications would not authorize any change in the types or any increase in the amounts of

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effluents or a change in the authorized power level of the facility.

l WHEREFORE, Applicant respectfully requests that Section 2.5 of I l

Appendix A to facility Operating License No. DPR-40 be amended in the form l: attached hereto as Attachment A. ,

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2-A copy of this Application, including its attachments, has been sub-mitted to the Director Nebraska State Division of Radiological Health, as required by 10 CFR 50.91.

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OMAHA PUBLIC POWER DISTRICT I'

By A" Division Manager Nuclear Operations Subscribed and sworn to before me this 2/sr day of February, 1990, 14dL- Notary Public f

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W N3IARY $tatt of Adreu N h1 IM

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ATTACHMENT A  ;

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X . ~ 2'. 0 LIMITING CONDITIONS FOR OPERATION '

p 1 2.5 Steam and Feedvater Systems I Applicability I  !

L Applies- to the operating status of the steam and feedvater systems. j f

P Objective

i. i e= To define certain' conditions for the steam and feedvater system 1 f

p necessary to assure adequate decay heat removal.

L i , Specifications  ;

The reactor coolant shall not be heated about 3000F unless the i folleving conditions are mett

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(1) Both ' auxiliary feedvater pumps are operable. One of the -

auxiliary feedvater pumps may be inoperable for 2h hours o provided that the redundant component shall be tested to demonstrate operability.

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(0) . A minimum of 55,000 gallons of water in the emergency.

feedvater storage tank and a backup vater supply to the ;i

• emergency feedvater storage tank from the Missouri. River

, p. by the fire water system.

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(3) All valves, interlocks and piping associated with the j

• 1bove~ components regyired to function during accident j conditions are operable. Manual valves that could inter-rupt auxiliary feedvater flow to the steam generators I chall be locked'in the required position to ensure a  :

flow path to the steam generators.

(k) The main steam stop valves are operable and capable of.

closing in four seconds or less under no-flow conditions.

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A reactor shutdown from power requires a removal of core de. cay heat. Immediate decay heat removal requirements are normally  ;

natisfied by the steam bypass to the condenser. Therefore. '

core decay heat.can be continuously dissipated via the steam _;

byptss to the. condenser as long as feedvater to the steam  :

cenerator is available. Normally, the capability to supply feedvater to the steam generators is provided by operation ,

or the; turbine cycle feedvater system. In the unlikely event

'of complete loss of electrical 'pover to the station, decay -

heat: removal is by steam discharge to the atmosphere via the main steam safety and atmospheric dump valves. Either auxi-l liary feedvater. pump can supply sufficient feedvater for re-  ;

ment of decay heat from the plant. The minimum amount of l<h ' water in the emergency feedvater storage tank is the amount- ,

noeced for 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> of such operation. The tank can e nupplied with water from the fire protection system.1)re-1 Amendment No. h9 2-28 I

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2.0 ' LIMITING CONDITIONS FOR OPERATION

'tf' - 2.5 Steam and Feedwater Systems .(Continued)

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,f ' + A closure time of k seconds for the main steam stop valves is considered j

[ adequate and was selected as being consistent with' expected response l

. time for  !

L analysis. g t{gyentation as detailed in the steam line break incident  ;

! i References l

l;; (1) TSAR, Section 9.h.6 ]

(2) FSAR, Section 10.3 ,

(3) TSAR, Section 14.12  ;

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