ML20198H327

Sser Re Automatic Sys to Prevent Charging Pump Deadheading. Design Mod Acceptable.Ser Confirmatory Item 16 Considered Closed

ML20198H327
Person / Time
Site:	Byron
Issue date:	05/21/1986
From:	NRC
To:
Shared Package
ML20198H316	List: ML20198H310 ML20198H327
References
NUDOCS 8605300278
Download: ML20198H327 (1)

Text

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SUPPt.EMENTAI. SAFETY EVAL.UATION REPORT l BYRON STATION, UNITS 1 AND 2  !

DOCKET NOS.: STN 50-454 AND STN 50-455 j l

l 7.3.2.13 Charging Pump Deadheading In Supplement No. 3 to the Byron SER, the staff stated that the applicant had provided a conceptual outline for a design change which would provide open and close signals for a solenoid-operated valve in each charging pump miniflow

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line to prevent pump deadheading. These signals were to be developed from four redundant reactor coolant system wide range pressure transmitters combined in two-out-of-four logic for both high (open) and low (close) pressure signals taken in coincidence with the safety injection signal. The staff reviewed the conceptual information and found it acceptable pending

_ review of the detailed design. 1 i

The licensee has submitted detailed design information (logic diagrams and electrical schematics) for review and provided, in Amendment 45 to the FSAR, appropriate revisions covering the modifications. The staff has reviewed the detailed information provided and finds the design modification acceptable. 4 Thus, Confirmatory item 16 is considered closed. (This item is also discussed in Section 6.3.2, SER Supplement No. 4.)

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