ML20011D405

Application for Amend to License DPR-40,revising Limiting Conditions for Operation for Chemical & Vol Control Sys

ML20011D405
Person / Time
Site:	Fort Calhoun
Issue date:	12/20/1989
From:	Morris K OMAHA PUBLIC POWER DISTRICT
To:
Shared Package
ML20011D403	List: ML20011D402 ML20011D405 ML20011D406
References
NUDOCS 8912270128
Download: ML20011D405 (7)

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BEFORE-THE UNITED STATES g

NUCLEAR REGULAT M COMMISSION In the Matter of Omaha Public Power District ) Docket No. 50-285 2

(Fort Calhoun Station -)

Unit No. 1) .

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APPLICATION FOR AMENDMENT OF OPERATING LICENSE t

Pursuant to' Section 50.90 of the regulations of the U. S. Nuclear i Regulatory Commission ("the Commission"), Omaha Public Power District, holder i of. Facility Operating License No. DPR-40, herewith requests that the Technical Specifications set forth in Appendix A to that License be amended to reflect changes. to .the Limiting Conditions for Operations for the Chemical and Volume Control System. ,

L 'The proposed changes.in Technical Specifications are discussed in 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 At+achment 8. The proposed changes in specifications-would not authorize any ounge in the types or any increase in the amounts of effluents or a change in the authorized power level of the facility.

W!!EREFORE, Applicant respectfully requests that the definitions and Sections 2 and 3 of Appendix A to Facility Operating License No. DPR 40 be amended in the form attee.hed hereto as Attachment A.

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'A copy of this Application, including its attachments, has been submitted to the Director - Nebraska State Division of Radiological Health, as required {

by 10 CFR 50.91. l i

, j OMAHA PUBLIC POWER DISTRICT r

By bbion, Manager Nuclear Operations l

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Subscribed and sworn to beforr ine this lorn day of December,1989.

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ENW1407ASY Staa of teasu J.T. CLEASON

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UNITED STATES OF AMERICA NUCLEAR REGULATORY COMMISSION In the Matter:of Omaha Public Power District Docket No. 50-285

-(Fort Calhoun Station Unit No. 1) )

AFFIDAVIT K. J. Morris, being duly sworn, hereby deposes and says that he is the Division Manager - Nuclear.0perations of the Omaha Public Power District; that as such he is duly authorized to sign and file with the Nuclear _ Regulatory Commission the attached information concerning the Application for Amendment dated December 20, 1989, concerning the Limiting Condition for 9peration for the Chemical and Volume Control' System; that he is familiar with the content

.thereof;.and that the matters set forth therein are true and correct to the best of his knowledge, information, and belief.

~K.L X M6fris-Division Manager Nuclear Operations-STATE OF NEBRASKA) 1

) ss COUNTY OF DOUGLAS) s-Subscribed and sworn to before me, a Notary Public in and for the State of Nebraska on this Jo M day of December, 1989.

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Notary Public A CINEMI NOTAav. State of Natasta W-T. My la p. July 1990

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ATTACHMENT A "

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,- - 2.0 LIMITING CONDITIONS FOR OPERATION

'2.2 Chemical ' and Volume Control System Applicability Applies to the operational status of the chemical and ' volume' control system.

Objective To define those conditions of the chemical and volume control system  ;

necessary to assure safe reactor operation.  !

Specifications I (1) ' When fuel is in the reactor, there shall be at least one flow path to the core for boric acid injection.

(2) The reactor shall not be made critical unless all the following minimum requirements are met:

a. At- least two charging pumps shall be operable, b.- One boric acid transfer pump shall be operable. j

c. The two concentrated boric acid tanks together shall contain a minimum of 68 inches of a 6-1/h percent to 12 percent by weight boric acid solution at a temperature of at least 200F above saturation te=perature for the concentration present j in the tank.

d. System piping and valves shall be operable to the extent of establishing two flow paths frem the concentrated boric acid ,

tanks ' to the reactor coolant system and a flow path from the (

SIRW tank to the charging pumps.  !

e. Both channels of heat tracing shall be operable for the above flow paths, f.

Both level instruments on the concentrated boric acid tanks shall be operable.

.(3) Modification of Minimum Requirements 1 i

During power operation, the minimum requirements may be modified  !

to allev any one of the following conditions to exist at any one ti=e. If the system is not restored to meet the minimum require- '

ments within the time period specified, the reactor vill be placed in a hot shutdown condition in 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />. If the minimum requirements are not satisfied within an additional h8 hours, a cold shutdown {

shall be initiated.

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2.0l LIMITING CONDITIONS FOR OPERATION-

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2. 2 Chemical and volume Control System (Continued)' -

a. One of the operable charging pumps may be removed from service provided two charging pumps are operable within -

24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, i

b. Both boric acid pumps may be out of service for 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

c. One concentrated boric acid tank may be out of service provided a minimum of 68 inches of 6-1/4 percent to 12 percent by weight boric acid solution at a temperature of at least 20*F above saturation tenperature is contained in the ope - 'e tank ,d provided that t 'e tank is

'es t.. ed 'ble 3tus w' in 24 hr ,

i- s path from the concentrated 'buru acid tanks

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_, ' ear or coolant system may be operable providec rr- e 1er the other flow path from the' concentrated i 50;.. av i ts ";

• the rea ter coolant systen or the i

'RW +'at .o the ci:stging pumps is flu 7: )t .

• rom th, store, to 9-east a sie vitbin 24 nours

e. O'i channel of ne-c

• acing may De out of service provided

't is restcced to (, s able s>Jtus within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

f. 0ne live. instrument on t.sch concer,trated boric acid tank may be out of service fvr 24 houra. '

Basis The chemical-and coolant system boron volume control (system inventory. l) This isprovides normallycontrol of the reactor accomplished by using any one of the three charging pumps in series with one of the two

. boric acid pumps. An alternate method of boration will be to use the charging pumps directly from the SIRW storage tank. A third method will be to depressurize and use the safety injection pumps. There are two sources of borated water available for injection through three different paths.

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(1). The boric acid pumps can deliver the concentrated boric acid tank contents (6-1/4 - 12 weight percent concentration of boric acid) to the charging pumps. The< tanks are located above the charging pumps so that the boric acid wfll flow by gravity without being pumped.

(2) The safety injection pumps can take suction from the SIRW tank (at least 1800 ppm boron solution). l Amendment No. Ah, .03 .d GWW w w

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2. 0 LIMITING CONDITIONS FOR OPERATION-2.2 2henical and Volume Control System (Continued)

(3)- The charging pumps can take their suctions by gravity from either s the boric acid tanks or the SIRW tank.

• Each concentrated boric acid tank containing 68 inches of 6-1/h weight percent boric acid has sufficient _ boron to bring the plant to a cold shutdown condition. Boric acid pumps are each of sufficient capacity to feed all three charging' pumps at their maximum capacity.

The concentrated boric acid storage tank is sized for a 6-1/h weight' percent -boric acid solution and is capable of storing solution up to 12 veight percent solution. All components of the system are capable of maintaining 12 veight percent solution. The elevation of :the concentrated boric acid tank is sufficiently above the charging pump suction so as to provide- adequate gravity flow to the charging pumps.

Duplicate haating equipment is provided on all components of the '

system to maintain the temperature of the surface to at least 1600F, which is 200F above the saturation temperature of a 12 percent

-solution.~ Malfunction of any heater element vill be annunciated in the control room in sufficient time to energise redundant heater elements before the 200F limit above saturation temperature is reached; the 200F limit also provides assurance that the plant can be shut down before the boric acid precipitation temperature is reached.

The SIRW tank contents are sufficient to borate the reacter coolant in order to reach cold shutdown at any time during core life.

The' limits on component operability and the time periods for in-operability were selected on the basis of the redundancy indicated above and engineering judgment.

References (1) FSAR, Section 9 2 2-19