ML16341B091

7 to Updated Final Safety Analysis Report, Chapter 6, Table 6.2-6, Single Active Failure Analysis Emergency Core Cooling System Recirculation Phase

ML16341B091
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: ML16341B091 (3)

Text

IINNDDIIAANNAA AANNDD M MIICCHHIIGGAANN PPOOW WEERR DD.. CC.. CCOOOOKK NNUUCCLLEEAARR PPLLAANNTT UUPPDDAATTEEDD FFIINNAALL SSAAFFEETTYY AANNAALLYYSSIISS RREEPPOORRTT Revision:

22 Table:

6.2-6 Page:

1 of 3 SINGLE ACTIVE FAILURE ANALYSIS EMERGENCY CORE COOLING SYSTEM RECIRCULATION PHASE Component Malfunction Comments A. Accumulator Deliver to broken loop Totally passive system with one accumulator per loop.

Evaluation based on three accumulators delivering to the core and one spilling from ruptured loop.

B.

Pump:

1) Centrifugal Charging Fails to start Two provided. Evaluation based on operation of one.

2) Safety Injection Fails to start Two provided. Evaluation based on operation of one.

3) Residual Heat Removal Fails to start Two provided. Evaluation based on operation of one.

C.

Automatically Operated Valves:

1) Boron injection tank isolation a) inlet valve Fails to open Two parallel lines; one valve in either line is required to open.

b) outlet valve Fails to open Two parallel lines; one valve in either line is required to open.

2) Centrifugal Charging pumps a) suction line from RWST isolation valve Fails to open Two parallel lines; only one valve in either line is required to open.

b) discharge line to the normal charging path isolation valve1 Fails to close Two valves in series; only one valve required to close.

c) minimum flow line isolation valve Fails to close Two trains in parallel; only one train required.

d) suction from volume control tank isolation valve Fails to close Two valves in series; only one valve required to close.

1 The reactor coolant pump seal water path is left open.

IINNDDIIAANNAA AANNDD M MIICCHHIIGGAANN PPOOW WEERR DD.. CC.. CCOOOOKK NNUUCCLLEEAARR PPLLAANNTT UUPPDDAATTEEDD FFIINNAALL SSAAFFEETTYY AANNAALLYYSSIISS RREEPPOORRTT Revision:

22 Table:

6.2-6 Page:

2 of 3 SINGLE ACTIVE FAILURE ANALYSIS EMERGENCY CORE COOLING SYSTEM RECIRCULATION PHASE Component Malfunction Comments Recirculation Phase A. Valves operated From Control Room for Recirculation:

1) Containment sump recirculation isolation Fails to open Two lines parallel; only one valve in either line is required to open.

2) Residual heat removal pumps suction line from RWST isolation Fails to close Check valve in series with two gate valves; operation of only one valve required.

3) Safety injection pumps suction line from RWST Fails to close Check valve in series with gate valve; operation of only one valve required.

4) Centrifugal Charging pumps suction line from RWST isolation valve Fails to close Check valve in series with two parallel gate valves.

Operating of either the check valve or the gate valves required.

5) Safety injection pump suction line isolation valve at discharge of the west residual heat exchanger Fails to open Separate and independent high head injection path via the centrifugal charging pumps taking suction from discharge of the East residual heat residual head exchanger. A cross over line allows the flow from one heat exchanger to reach both safety injection and charging pumps if necessary.

6) Residual Heat Removal discharge bypass line Fails to close The second isolation valve for RWST backflow is still available.

IINNDDIIAANNAA AANNDD M MIICCHHIIGGAANN PPOOW WEERR DD.. CC.. CCOOOOKK NNUUCCLLEEAARR PPLLAANNTT UUPPDDAATTEEDD FFIINNAALL SSAAFFEETTYY AANNAALLYYSSIISS RREEPPOORRTT Revision:

22 Table:

6.2-6 Page:

3 of 3 SINGLE ACTIVE FAILURE ANALYSIS EMERGENCY CORE COOLING SYSTEM RECIRCULATION PHASE Component Malfunction Comments B. Pumps:

1) Component Cooling Water Pump Fails to start Two provided. Evaluation based on operation of one. One pump is running during normal operation. An additional shared pump is available.

2) Essential Service Water Pump Fails to start Four provided for both units. Two pumps are required for normal operation.

3) Residual Heat Removal Pump Fails to start Two provided. Evaluation based on operation of one.

4) Charging Pump Fails to operate Same as injection phase.

5) Safety Injection Pumps Fails to operate Same as injection phase.