ML18044A846

Tech Specs 3.2.1,3.2.2 & 3.2.3 Re Concentrated Boric Acid Tank Level

ML18044A846
Person / Time
Site:	Palisades
Issue date:	05/05/1980
From:	CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:
Shared Package
ML18044A844	List: ML18044A842 ML18044A845 ML18044A846
References
NUDOCS 8005080337
Download: ML18044A846 (3)

Text

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TP ATIACHMENT Page Changes for Proposed Technical Specifications Change*

3.2 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 3.2.1 When fuel is in the reactor, *there shall be at least one flow path to the core for boric acid injection.

3.2.2 The reactor shall not be made critical unless all the following conditions are met:

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a. At least two charging pumps sha11 be operable.

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b. One concentrated boric acid transfer pump shall be operable.

c. The two concentrated boric acid tanks together shall contain a minimum of 115 inches of a 6.4 percent to 10 percent by weight boric acid solution at a temperature of at least 25°F above saturation temperature for the concentration present .in the tank.

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

3.2.3 During power operation, the requirements of 3.2.2 may be modified to allow any one of the following conditions to be true at any one time.

If the system is not restored .to meetthe requirements of 3.2.2 within the time period specified, the reactor shall be placed in a hot shutdown condition within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />. If the requirements of 3.2.2 are not satisfied within an additional 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br />, the reactor shall be placed in a cold shutdown condition within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

a. One of the operable charging pumps may be removed from service provided that two charging pumps are restored to operable status within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

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b. One concentrated boric acid tank may be out of service provided a minimum of 115 inches of 6.4% to 10% by weight boric acid solution I 3-26

3.2 CHEMICAL AND VOLUME CONTROL SYSTEM (Contd) at a 'temperature of at least 25°F above saturation temperature is contained in the operable tank and provided that the tank is restored to operable status within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

c. Only one flow path from the concentrated boric acid tanks to the primary coolant system ~ay be operable provided that either the other flow path from the concentrated boric acid tanks to the primary coolant system or flow path from the SIRW tank to the charging pumps is restored to operable status within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

d, One channel of heat tracing may be out of service provided it is restored to operable status within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

Basis The chemical and volume control system provides control of the primary coolant system boron inventory.(l) This is normally 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.

a. The boric acid transfer pumps can deliver the concentrated boric acid tank contents to the charging pumps.

b. The safety injection pumps can take suction from the SIRW tank (1720 ppm boron solution).

c. The charging pumps can take their suctions by gravity from either the boric *acid tanks cir the SIRW tank.

Each concentrated boric acid tank containing 115 inches of 6.4 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 6.4 weight percent boric acid solution and is capable of storing solution up ,to 12 weight percent. All components of the system are capable of maintaining 12.

weight percent solution.

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