ML20024B112

Startup Test Procedure 30,Recirculation Sys.

ML20024B112
Person / Time
Site:	LaSalle
Issue date:	06/24/1983
From:	COMMONWEALTH EDISON CO.
To:
Shared Package
ML20024B100	List: ML20024B099 ML20024B103 ML20024B104 ML20024B107 ML20024B109 ML20024B110 ML20024B111 ML20024B112 ML20024B115 ML20024B116 ML20024B119
References
PROC-830624-06, NUDOCS 8307050229
Download: ML20024B112 (2)

Text

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STARTUP TEST PROCEDURE 30 RECIRCULATION SYSTEM

1. PURPOSE A. To obtain recirculation system performance data under different operational conditions, such as pump trip, flow coastdown, pump restart, and flow induced vibration.

B. To verify that no recirculation system cavitation will occur in the operating region of the power-flow map.

C. To verify that during the trip of one recirculation pump, the feed-water control system can satisfactorily contr,o1 water level without a resulting turbine trip and/or scram.

D. To record and verify acceptable performance of the recirculation two pump circuit trip system.

2. CRITERIA Level 1 A. The two pump drive flow coastdown transient during the first 3 seconds must be equal to or faster than that specified on Figure 14.2-7 of the FSAR.

Level 2 A. The water level, APRM and transients of simulated heat flux, pres-sure, drive and core flow for the one pump trip shall not exceed the predicted values.

B. The reactor water level margin to avoid a high level trip shall be greater than or equal to 3.0 inches during the one pump trip.

C. The simulated heat flux (TPM) margin to avoid a scram shall be greater than or equal to 5.0 percent during the one pump trip.

D. The recirculation system cavitation runback _ feature shall be adjusted such that a flow runback (transfer of recire, pump power supplies from 60 Hz to 15 Hz) occurs prior to any observable cavitation in the Recirculation System.-

E. During recirculation pump restart (s) the scram trip avoidance margins must be at leastithe following:

1. For APRM, greater than or equal to.7.5%.

2. For simulated heat' flux, greater than or equal to 5.0%.

8307050229 830624 PDR ADOCK 05000373

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STP #30 Page 2 F. If the Icvel I criteria for the two pump trip coastdown transient is met, the data shall be analyzed within two weeks to ensure compati-bility with the safety analysis.

3. RESULTS Test Condition 3.

Recirculation System performance data was taken at this test condition.

No criteria were applicable to this test section.

Other test sections to be performed at this test condition are 1 and 2 recirculation pump trips and restarts, recirculation pump runback veri-fication and jet pump and flow control valve cavitation interlock veri-fication.

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