ML051610269

Response to NRC Request for Additional Information License Amendment Request 21 3 to the Kewaunee Nuclear Power Plant Technical Specifications, Auxiliary Feedwater Pump Protection, Enclosure 2 - Enclosure 4

ML051610269
Person / Time
Site:	Kewaunee
Issue date:	06/10/2005
From:	Nuclear Management Co
To:	Office of Nuclear Reactor Regulation
References
NRC-05-072
Download: ML051610269 (6)

Text

ENCLOSURE 2 AFW SUCTION PRESSURE TRIP SETPOINT DETERMINATION 1 Page Follows

ENCLOSURE 2 AFW Suction Pressure Trip Setpoint Determination reset 6.29 psig 6.132 psig ALT = +I-0.061 psi (ID)

APS = 6.04 psig

\ AFL = +I-0.092 psi

--b _- __

/ 5.948 psig Margin = 0.035 psi NTSP = PL + TLE AUPL 1 TLE = 0.1 13 psi 5.913 psig 5.8 psig AL = Analytical Limit PL = Process Limit TLE = Total Loop Error (Measured + Unmeasured uncertancies)

APS = Actual Plant Setpoint AFL = As Found Limit (APS +I- Measured Uncertancies)

ALT = As Left Tolerance (APS +I- Instrument Accuracy)

ID = Instrument Drift (Measured Uncertancies)

Page 1 of 1

ENCLOSURE 3 ILLUSTRATIVE SCHEMATIC OF THE AFW SUCTION AND DISCHARGE PRESSURE TRIP CIRCUITS 1 Page Follows

ENCLOSURE 3 Illustrative Schematic of the AFW Suction and Discharge Pressure Trip Circuits NWJLsi

1. R

• REUDTE CONTROL IN COHTROL R O W L = LOCAL CONTROL AT DEDICATED WUTWWN PANEL

2. W V CONTACT OPEN WHEN SW W R Y VALVE OPEN.

FOR INFORMATION ONLY SIMPLIFIED 'A' AFW PUMP SUCTION PRESSURE (SPI AND DISCHARGE PRESSURE (DP) T R I P CIRCUITS Page 1 of 1

ENCLOSURE 4 AFW DISCHARGE PRESSURE TRIP SETPOINT DETERMINATION 1 Page Follows

ENCLOSURE 4 AFW Discharge Pressure Trip Setpoint Determination

.............................. 900 psi ALT = +I- 10 psi (ID) APS = 886 psig AFL (AV) = +I- 14 psi 872 psi Margin = 1 psi NTSP = PL + TLE 871 psi

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T--TLE = 18 psi AUPL 853 psi AL = Analytical Limit PL = Process Limit TLE =Total Loop Error (Measured + Unmeasured uncertancies)

APS = Actual Plant Setpoint AFL = As Found Limit (APS +I- Measured Uncertancies)

ALT = As Left Tolerance (APS +I- lnstrument Accuracy)

ID = Instrument Drift (Measured Uncertancies)

INWC = inches water column Page 1 of 1