ML23129A276

1 to Updated Safety Analysis Report,Section VI, Figures

ML23129A276
Person / Time
Site:	Cooper
Issue date:	04/20/2023
From:	Nebraska Public Power District (NPPD)
To:	Office of Nuclear Reactor Regulation
Shared Package
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References
NLS2023022
Download: ML23129A276 (1)

Text

Minimum Containment Pressure Required for ECCS Pump Operation 35.0 250

+--------

Design Basis flowrates 31.5 ----~ t <= 600 s CS = 6,525 gpm RHR = 9,240 gpm I-

~ ......

t > 600 s CS = 4,750 gpm 28.0 I Wetwell Pressure I RHR = 7,700 gpm 200

~ ~

/

24.5 Suppression Pool Temperature i?

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e

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0 0

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RHR 1 RHR e"' ~ 100 ~

0.

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C.

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, VI (J) 10.5 7.0

'---- cs 50 3.5 0.0 0

0 100 200 300 400 500 600 700 800 900 1,000 Time after the event (seconds)

Note: Core Spray pumps initially require containment overpressure due to high run- Nebraska Public Power District out flows. See reference (60) for other COOPER NUCLEAR STATION sensitivity cases. UPDATED SAFETY ANALYSIS REPORT (USAR)

Minimum Containment Pressure for Operation of ECCS Pumps (0 - 1000 Seconds)

Figure VI-5-15 08/13/02

Minimum Containment Pressure Required for ECCS Pump Operation 300 25 Wetwell Presv:1,,,-" '"" I"--

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Design Basis Flowrates ii t---.,...._

t---t- 140 5

t <= 600 s CS = 6,525 gpm RHR = 9,240 gpm t > 600 s CS = 4,750 gpm RHR = 7,700 gpm 100 0

100,000 1,000,000 1,000 10,000 Time after the event (seconds)

Nole: These curves represent the "design case" required overpressure for CS and Nebraska Public Power District RHR. See reference (60) for other COOPER NUCLEAR STATION sensitivity cases.

UPDATED SAFETY ANALYSIS REPORT (USAR)

Minimum Containment Pressure for Operation of ECCS Pumps (1000 - 106 Seconds)

Figure VI-5-16 08/13/02