ML20006F298
| ML20006F298 | |
| Person / Time | |
|---|---|
| Site: | Fort Calhoun  |
| Issue date: | 02/21/1990 |
| From: | OMAHA PUBLIC POWER DISTRICT |
| To: | |
| Shared Package | |
| ML20006F297 | List: |
| 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
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Unit No. 1)
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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 L
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.
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WHEREFORE, Applicant respectfully requests that Section 2.5 of I
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.
l 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-f Notary Public OINE
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ATTACHMENT A f
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~ 2'. 0 LIMITING CONDITIONS FOR OPERATION p
2.5 Steam and Feedvater Systems 1
I Applicability I
L Applies-to the operating status of the steam and feedvater systems.
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P Objective i.
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To define certain' conditions for the steam and feedvater system 1
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necessary to assure adequate decay heat removal.
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, Specifications The reactor coolant shall not be heated about 3000F unless the i
folleving conditions are mett t.
(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
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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.
j closing in four seconds or less under no-flow conditions.
Basin 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-l<h ment of decay heat from the plant. The minimum amount of i '
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
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- 2.5 Steam and Feedwater Systems.(Continued)
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A closure time of k seconds for the main steam stop valves is considered j
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adequate and was selected as being consistent with' expected response l
analysis. g t{gyentation as detailed in the steam line break incident time for L
i References l
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(1)
TSAR, Section 9.h.6
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(2)
FSAR, Section 10.3 (3)
TSAR, Section 14.12 6-l' a
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