ML16343A142

7 to Updated Final Safety Analysis Report, Chapter 14, Table 14.3.2-2, Time Sequence of Events for Small Break Loss-of-Coolant Accident

ML16343A142
Person / Time
Site:	Cook
Issue date:	10/24/2016
From:	Indiana Michigan Power Co
To:	Office of Nuclear Reactor Regulation
Shared Package
ML16336A263	List: AEP-NRC-2016-42, Fire Protection Program Change Summary ML16336A225 ML16336A228 ML16336A238 ML16336A291 ML16336A292 ML16336A294 ML16336A295 ML16336A297 ML16336A298 ML16336A299 ML16336A300 ML16336A301 ML16336A302 ML16336A303 ML16336A304 ML16336A305 ML16336A306 ML16336A308 ML16336A309 ML16336A310 ML16336A311 ML16336A312 ML16336A313 ML16336A314 ML16336A315 ML16336A316 ML16336A317 ML16336A318 ML16336A319 ML16336A320 ML16336A322 ML16336A323 ML16336A324 ML16336A325 ML16336A327 ML16336A328 ML16336A329 ML16336A330 ML16336A332 ML16336A333 ML16336A334 ML16336A336 ML16336A337 ML16336A338 ML16336A339 ML16336A340 ML16336A341 ML16336A342 ML16336A345 ... further results
References
AEP-NRC-2016-42
Download: ML16343A142 (1)

Text

INDIANA AND MICHIGAN POWER D. C. COOK NUCLEAR PLANT UPDATED FINAL SAFETY ANALYSIS REPORT Revision: 25.0 Table: 14.3.2-2 Page:

1 of 1 Unit 1 Last Revised: Revision 25.0 Time Sequence of Events for Small Break Loss-of-Coolant Accident Event Time (sec) 1.5-inch 2-inch 2.5-inch 2.75-inch 3.0-inch 3.25-inch 3.5-inch 3.75-inch 4.0-inch 6.0-inch 8.75-inch Break Initiation 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Reactor Trip Signal 89.8 45.9 27.9 22.7 19.0 16.2 14.0 12.3 10.9 6.0 4.5 S-Signal 112.8 60.9 38.2 31.6 26.8 23.2 20.3 17.9 15.7 8.4 6.7 SI Flow Delivered(1) 166.8 114.9 92.2 85.6 80.8 77.2 74.3 71.9 69.7 62.4 60.7 Loop Seal Clearing(2) 2492 1341 857 628 516 445 386 390 302 146 30 Core Uncovery(4)

N/A 1897 1027 1017 963 780 664 630 602 342 N/A Accumulator Injection N/A N/A 3065 2129 1707 1264 1031 940 823 345 168 (3)

RWST Volume Delivered(5) 2165.6 2157.6 2145.4 2137.8 2130.0 2120.9 2114.4 2110.2 2106.4 2042.8 1590.7 PCT Time (BOL)

N/A 968.4 1433.4 1452.5 1584.0 1725.0 1705.3 1517.9 1411.2 670.6 N/A Core Recovery (4)

N/A 6663 4032 4081 3977 3840 3973 4110 3404 423 N/A Notes:

(1) SI is assumed to begin 54.0 seconds (SI delay time) after the S-Signal.

(2) Loop seal clearing is assumed to occur when the steam flow through the broken loop, loop seal is sustained above 1 lbm/s.

(3) For 8.75-inch break, accumulator injection begins for Loops 2-4 only; Loop 1 (broken loop) accumulator line is the location of the break and assumed to spill to containment.

(4) The latest point of sustained core uncovery/recovery is reported.

(5) The analysis assumes minimum usable RWST volume (280,000 gal) delivered via ECCS injection and containment spray before the low level RWST water level signal for switchover to cold leg recirculation is reached.