Enclosure 7Aircraft Impact Assessment (AIA) Overview

(Redacted)

babcock & wilcox mPower, Inc., a Babcock & Wilcox company

generation

Aircraft Impact Assessment (AIA) Overview(Redacted Version)

31 October 20120 2012 8ac1ock & WHcox mPower. kv anKI 0 2012 Beciel Power Cowporakin. AN Rights Reserved This document is Oe property of Babc•ck &

Wilox mPower, Inc (B&W mPowr) a&W Bechlel P Corporaion-

This is a pre-application document and includes preliminary B&W mPower Reactor design or design supporting information and is subject to further internal review, revision, or verification.

generationAircraft Impact Assessment

" Objectives* Plant Layout" AIA Introduction

" Preliminary Review" Draft Initial Assessment

" Conclusions" Discussion

0 2012 Babcock & Wilcox mPower, Inc ard © 2012 Bech"e Power Crporabon AM rngts reserved 2

generation

m~Pow OBJECTIVES

0 Discuss preliminary efforts and results of AIA for the B&WmPowerTM Plant

* Solicit NRC staff comment and feedback on progress andplans

0 2012 BabCOCK & Wicox mPower. Inc. and 2012 Bechtel Powier Corporation AlN rights reserved 3

generation

nPowMAN

Plant Layout

0 2012 Babcock & Wilcox mPower Inc. and 0 2012 [3echltel Power Corporabon. All rights reserved 4

gene rat on

mnpower Site Overview Looking South

© 2012 Bat cofk & Wcox rnPowef Inc adnI t) 20C1

2 Bechtd a Al rgts reled

generation

Plot Plan

I -- I~ I

I IS * I

S.. I

S ~I IS* I~. II ~- -~ -- IS p

* ~> \ I.K- 4

IN

$00 "it 0"

"--'- .,"q, •--• ' ---T ---- -- --

PA'i f I _. i . • M....

0 2012 Babcock & Wicox mPower, Inc and C 2012 Bechtel Povw Corpoxabon AM nghts reserved 6

generation

mHPowe NI Model Cut Looking West

I

I[CCI per Affidavit 4(arid)]

0 2012 Babcock & Wicox mPower, tnc and 0 2012 Bechtel Power Corpoab AN ngflts reserved 7

generation

"IPowe NI (RSB) Model Cut Looking North

I

I[CCI per Affidavit 4(a)-(d)]

0 2012 Babcock & Wikcox mPower, Inc and © 20 12 Beclme Power corporabon All ngts reserved 8

generationNI (Annex) Model Cut Looking North

I

I[CCI per Affidavit 4(a)-(d)]

0 2012 Babcock & Wilcox mPower, Inc and 0 2012 Bechtel Power CGoporaboo All nrghts reserved 9

generation-m------- RCB Looking West

][CCI per Affidavit 4(a)-(d)]

100 2012 Babcock & WOCoX mPOwer. Inc and C 2012 Bechtel Power Corporabon AN nghls resered

generation

Nuclear Island (RSB) Plan El. [ I[CCI per Affidavit 4(a)-(d)]

[

I[CCI per Affidavit 4(a)-(d)]

11© 2012 Babcock & Wilcox mPower, Inc. and © 2012 Bechtel Power Corporation. All rights reserved.

generation

inlPOr

AIA Introduction

0 2012 Babcock & Wilcox mPower. Inc and © 2012 Becftel Power Coporation. AM ngihts reserved 12

generation

mZPO wrM AIA Introduction

e Assessment performed using NEI 07-13, Rev. 8

0 Section 2.0 of NEI 07-13 not applied [

I

4 Section 3.0 Heat Removal AssessmentPhysical damage[.

• Assessed using "N" wall rule setI

Shock Damage* Propagated through structural pathways per NEI 07-13 guidance

[CCI per Affidavit 4(a)-(d)]

02012 Babcock & Wilcox mPower, inc and 0 2012 Bechtel Power Corpabon AN rigrts reserved 13

generation

mZPowe AIA Introduction (cont'd)

• Section 3.0 Heat Removal Assessment (cont'd)Fire Damage

" Propagated using NEI 07-13 fire rule sets" Two barrier option used for door propagation" One barrier option used for[

I" Structural steel exposed to fire assumed to fail

[CCI per Affidavit 4(a)-(d)]

0 2012 Babcock & Wiacox mPower, Ic. and 0 2012 Bectltel Power Corporabtn AN ngrWts resetved1 14

generation

m o weAW Preliminary Review

" Conducted Spring 2012 on Earlier DesignLimited number of strikes selected to bracket perceived "worstcase"y

* Major Insights'!I

0

I* Example Strike that follows illustrates above insights

[CCW per Affidavit 4(a)-(d)]

0 2012 Babcock & Wicox mPower, nc. and C 2012 Bechtel Power Coqxoration. All rights reserved 15

generation

mZPOw Preliminary Review

Overview of Example Strike forKey Elevations

0 2012 Babcoc & Wicox mPower, In: and 0 2012 Bechtel Power Corporatbon All ngnts reserved 16

generation

Preliminary Review

I

][CCI per Affidavit 4(arid)]

© 2012 Babcock & Wk-ox mPower, Inc and © 2012 Bechtel Power Corporabon AN nghts reserved 17

generation

m~owAr Preliminary Review

[

I[CCI per Affidavit 4(arid)]

0 2012 Babcock & WIO= mPowe, hic and 02012 Bechtel Poefr Cporabon AN nghts reserved, 18

generation

m~Po weKdof Preliminary Review

I

I[CCl per Affidavit 4(arid)]

0 2012 BabcDck & Wdicox mPower, Inc and 0 2012 Bechtel Power Corporabon ANl nghts reserved 19

generation-1-wer Preliminary Review

[

I[CCI per Affidavit 4(a)-(d)]

© 2012 Babcock & Wilcox mPower, Inc. and © 2012 Bechtel Power Corporation. All rights reserved, 20

generation

mM~uwerA Preliminary Review

[

I[CCI per Affidavit 4(arid)]

0 2012 Babcock & Wilcox mPower, inc. and 0 2012 Bechtel Power Caporabon. AN rights reserved 21

generation

m~PolIWerý Preliminary Review

[

I[CCI per Affidavit 4(aHd)]

0 2012 Babcock & Wic mPower. Inc and 0 2012 Bechtel Power Coporabon ANr nghts resefe2 22

generation

m~oWr Draft Initial Assessment

* Complete set of postulated strikesStrikes separated by IMPW distances per NEI 07-13

Io Strike locations depicted in following slide

[CWI per Affidavit 4(arid)]0 2012 Babcock & Wilcox mPower. tnc arid 2012 Bechtel Powei Coporation AN rights reserved3 23

generation

mIPOwwAmr Draft Initial Assessment

II

I[CCI per Affidavit 4(a)-(d)]

0 2012 Babcock & W•o mPower, Inc and 02012 Bechtel Power Co;poralon AN ngnts reserved 24

generation

m~pw Draft Initial Assessment

I

I

[CCl per Affidavit 4(aHd)]C 2012 Babcock & Wilcox mPower, Urc and 0 2012 Bechtel Power Coporaon. AlN rigts reserved 25

generation

inPowerIM Draft Initial Assessment

[

]

[CCI per Affidavit 4(arid)]C 2012 Babcock & W =ox mPower. inc and 0 2012 Bechtel Power Corporabon All rights reserved 26

generation

Draft Initial Assessment

Assessment Overview for Key Elevations

0 2012 BabcocK & WilCox mPower, Wnc and 02012 Bechtel Power Corporabon. Anl nghts reserved 27

gene[ration

m~Po IwMre, A Draft Initial Assessment

[

I[CCI per Affidwa 4(arid)]

0 2012 Babcock & Wkcox mPower, Inc and 0 2012 Bechtel Power Coporation. Al nghts reserved 28

generion

mZPOwerts Draft Initial Assessment

[

I[CCI per Affidavit 4(aHd)]

290 2012 Babcock & Wicox mPower. Inc and C 2012 Bechtel Power Corporation AD rights reserved

generation

mwower"A Draft Initial Assessment

II

I[CCM per Affidavit 4(a)-(d)]

300 2012 Babcock & W acxO mPower, Inc and 0 2012 Bechel Power Corporation Al rights reserved

generation... ......Iw..r ... Draft Initial Assessment

[

][CCI per Affidavit 4(arid)]

C 2012 Babcock & Wdcox mPower, Inc and 0 2012 Bechtel Power Corporablon AM nghts reserved 31

generationm•owr Draft Initial Assessment

II

I[CCl per Affidavit 4(aHd)]

320 2012 Babcock & Wicox mPowei, Inc and 0 20 12 Bechtel Power COWp(rabon All gjhts reserved

generation

/TPPwe Draft Initial Assessment

[

I[CCl per Affidavit 4(aHd)]

330 2012 Babcock & WOcox mPower. Inc. and © 2012 Bechtel Power Corporabon AN uights reserved

generationmz.ower Design Concepts Being Considered

*

0

I[CCI per Affidavit 4(a)-(d)]

Q 2012 Babcock & Wilcox mPower, Ina. and Q 2012 Bechtel Power Corporation. All rights reserved. 34

generation

miPowe Path ForwardI

0

0

0

0

]

[CCI per Affidavit 4(aHd)]0 2012 Babcock & Wkcox mPower Inc and 0 2012 Becltef Power Gerporaton. AN nghts reserved 35

generationConclusions

[

0

I

[MCI per Affidavit 4(a)-(d)I0 2012 Babcock & WOcox mPowef, Inc and 0 2012 Bechtei Power Corporatn All nghts reselved 36

generation

mZPO Mwe

Discussion

C 2012 Babcock & Wicox mPower, Inc and C 2012 Bedcket Power Cotporaton. ANr nghts reserved 37