1

ArevaEPRDCPEm Resource

From: WILLIFORD Dennis (AREVA) [Dennis.Williford@areva.com]Sent: Monday, November 12, 2012 12:32 PMTo: Snyder, AmyCc: Hearn, Peter; Darrell.Gardner@areva.com; STACK Tim (AREVA); KOWALSKI David

(AREVA); wayne.massie@unistarnuclear.com; OWENS Martin (AREVA)Subject: AREVA Presentation for Nov. 19th Public Meeting to Discuss UHS Design Changes Attachments: November 19 UHS Public Meeting Overview version 10_17_12.pdf

Importance: High

Amy, Attached is an update of AREVA’s portion of the meeting slides for the rescheduled public meeting (Nov. 19th) to discuss UHS Design Changes for the U.S. EPR Design Certification. A separate presentation for the COLA portion will be transmitted separately by UNE. Thanks, Dennis Dennis Williford, P.E. U.S. EPR Design Certification Licensing Manager AREVA NP Inc. 7207 IBM Drive, Mail Code CLT 2B Charlotte, NC 28262 Phone: 704-805-2223 Email: Dennis.Williford@areva.com

From: WILLIFORD Dennis (RS/NB) Sent: Wednesday, October 24, 2012 11:20 AM To: Amy.Snyder@nrc.gov Cc: peter.hearn@nrc.gov; GARDNER Darrell (RS/NB); STACK Tim (RS/PT); KOWALSKI David (RS/NB); wayne.massie@unistarnuclear.com; OWENS Martin (RS/NB) Subject: AREVA Presentation for Oct. 30th Public Meeting to Discuss UHS Design Changes Importance: High Amy, Attached is AREVA’s portion of the meeting slides for Tuesday afternoon’s public meeting (Oct. 30th) to discuss UHS Design Changes for the U.S. EPR Design Certification. A separate presentation for the COLA portion will be transmitted separately by UNE. I assume that a projector will be made available for showing the slides for the presentation. Thanks, Dennis Dennis Williford, P.E. U.S. EPR Design Certification Licensing Manager AREVA NP Inc. 7207 IBM Drive, Mail Code CLT 2B Charlotte, NC 28262

2

Phone: 704-805-2223 Email: Dennis.Williford@areva.com

Hearing Identifier: AREVA_EPR_DC_RAIs Email Number: 4089 Mail Envelope Properties (2FBE1051AEB2E748A0F98DF9EEE5A5D4F24EF5) Subject: AREVA Presentation for Nov. 19th Public Meeting to Discuss UHS Design Changes Sent Date: 11/12/2012 12:32:02 PM Received Date: 11/12/2012 12:32:15 PM From: WILLIFORD Dennis (AREVA) Created By: Dennis.Williford@areva.com Recipients: "Hearn, Peter" <Peter.Hearn@nrc.gov> Tracking Status: None "Darrell.Gardner@areva.com" <Darrell.Gardner@areva.com> Tracking Status: None "STACK Tim (AREVA)" <Tim.Stack@areva.com> Tracking Status: None "KOWALSKI David (AREVA)" <David.Kowalski@areva.com> Tracking Status: None "wayne.massie@unistarnuclear.com" <wayne.massie@unistarnuclear.com> Tracking Status: None "OWENS Martin (AREVA)" <Martin.Owens@areva.com> Tracking Status: None "Snyder, Amy" <Amy.Snyder@nrc.gov> Tracking Status: None Post Office: auscharmx02.adom.ad.corp Files Size Date & Time MESSAGE 1587 11/12/2012 12:32:15 PM November 19 UHS Public Meeting Overview version 10_17_12.pdf 736323 Options Priority: High Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date: Recipients Received:

NR

C P

ublic

Mee

ting

U.S

. EPR

Des

ign

Cer

tific

atio

n U

HS

Des

ign

Cha

nges

Ste

phen

C. H

uddl

esto

nR

ockv

ille,

Mar

ylan

d N

ovem

ber 1

9, 2

012

Pub

lic M

eetin

g to

Dis

cuss

U.S

. EP

R D

esig

n C

ertif

icat

ion

–UH

S –

Nov

embe

r 19,

201

22

�In

trod

uctio

n �

UH

S H

eat L

oad

Red

uctio

n�

UH

S B

asin

Incr

ease

�Ex

pect

ed F

SAR

Cha

nges

�Sc

hedu

le

UH

S D

esig

n C

hang

es

Pub

lic M

eetin

g to

Dis

cuss

U.S

. EP

R D

esig

n C

ertif

icat

ion

–UH

S –

Nov

embe

r 19,

201

23

�U

ltim

ate

Hea

t Sin

k (U

HS)

�Fo

ur s

epar

ate

redu

ndan

t, sa

fety

-rel

ated

coo

ling

tow

er (C

T)

trai

ns, t

hat c

ool e

ssen

tial s

ervi

ce w

ater

(ESW

).�

UH

S C

T an

d ba

sin

are

size

d fo

r nor

mal

ope

ratio

n,

star

tup/

shut

dow

n an

d ac

cide

nt o

pera

tion

•U

HS

CT

and

basi

n si

zed

for 7

2-ho

urs

of D

BA

•U

HS

CT

and

basi

n m

axim

um te

mpe

ratu

re li

mit

of 9

5 o F

for D

BA•

Bas

in p

rovi

des

ES

W p

ump

NP

SH

Intr

oduc

tion

Pub

lic M

eetin

g to

Dis

cuss

U.S

. EP

R D

esig

n C

ertif

icat

ion

–UH

S –

Nov

embe

r 19,

201

24

�B

ound

ing

UH

S Si

zing

Eve

nts

�SB

LOC

A•

Low

Hea

d S

afet

y In

ject

ion

heat

exc

hang

er (L

HS

I HX

) in

Res

idua

l Hea

t R

emov

al (R

HR

) mod

e in

itiat

ion

at 3

50o F

•

Con

curr

ent l

oss

of o

ffsite

pow

er (L

OO

P),

Saf

ety

Inje

ctio

n (S

I) S

tage

1

Con

tain

men

t Iso

latio

n (C

I), a

nd E

mer

genc

y D

iese

l Gen

erat

or (E

DG

)sta

rt an

d lo

ad.

�LB

LOC

A

•LH

SI H

X in

SI m

ode

with

IRW

ST

cool

ing

•C

oncu

rren

t LO

OP

, SI S

tage

1 C

I, an

d E

DG

sta

rt an

d lo

ad

Intr

oduc

tion

Pub

lic M

eetin

g to

Dis

cuss

U.S

. EP

R D

esig

n C

ertif

icat

ion

–UH

S –

Nov

embe

r 19,

201

25

�U

HS

Hea

t Loa

d R

educ

tion

�O

bjec

tive:

gre

ater

reci

rcul

atio

n an

d in

terf

eren

ce

allo

wan

ce, a

nd d

ecre

ased

72

hour

eva

pora

tion

�A

ppro

ach:

elim

inat

e lo

ads

not a

pplic

able

for t

he li

miti

ng

sizi

ng c

ases

:•

Rem

oved

load

s th

at a

re n

ot p

ower

ed d

urin

g a

wor

st c

ase

DB

A/L

OO

P

•R

emov

ed lo

ads

isol

ated

by

DB

A S

I sig

nal a

nd S

tage

1 C

I •

Kep

t lo

ads

pow

ered

by

the

ED

G re

quire

d fo

r miti

gatio

n of

wor

st

case

DB

A

UH

S H

eat L

oad

Red

uctio

n

Pub

lic M

eetin

g to

Dis

cuss

U.S

. EP

R D

esig

n C

ertif

icat

ion

–UH

S –

Nov

embe

r 19,

201

26

�H

eat L

oads

rem

oved

as

not a

pplic

able

for a

LO

CA

D

BA

with

LO

OP

�C

harg

ing

pum

p an

d R

CP

cool

er lo

ads

rem

oved

bec

ause

they

ar

e no

t pow

ered

by

the

EDG

follo

win

g a

LOO

P•

Cha

rgin

g pu

mp

-not

pow

ered

by

ED

G-

mot

or c

oole

r -

oil c

oole

r-

seal

coo

ler

•R

CP

–no

t pow

ered

by

ED

G-

low

er b

earin

g oi

l coo

ler

-m

otor

air

cool

er

-up

per b

earin

g oi

l coo

ler

�Sa

mpl

e C

oole

rs n

ot o

pera

ted

in a

wor

st c

ase

DB

A•

Nuc

lear

Sam

ple

Coo

ler

•S

G S

ampl

e C

oole

rs�

CVC

S H

P C

oole

r let

dow

n is

olat

ed o

n a

SI s

igna

l and

Sta

ge 1

CI

•H

P C

oole

r

UH

S H

eat L

oad

Red

uctio

n

Pub

lic M

eetin

g to

Dis

cuss

U.S

. EP

R D

esig

n C

ertif

icat

ion

–UH

S –

Nov

embe

r 19,

201

27

�7%

Red

uctio

n in

lim

iting

UH

S pe

ak lo

ad

impa

ctin

g to

wer

des

ign

�Es

tabl

ishe

d ne

w re

circ

ulat

ion

and

inte

rfer

ence

allo

wan

ce a

nd re

duce

d ev

apor

atio

n

UH

S H

eat L

oad

Red

uctio

n

Pub

lic M

eetin

g to

Dis

cuss

U.S

. EP

R D

esig

n C

ertif

icat

ion

–UH

S –

Nov

embe

r 19,

201

28

�R

evis

ed U

HS

anal

ysis

in re

spon

se to

RA

I 351

qu

estio

n 27

inco

rpor

ated

a re

vise

d IR

WST

LB

LOC

A te

mpe

ratu

re in

crea

se�

The

LBLO

CA

cha

nge

incr

ease

d th

e am

ount

of

evap

orat

ion

over

the

72 h

our D

BA

per

iod

�B

asin

inve

ntor

y go

vern

ed b

y L

BLO

CA

inte

grat

ed lo

ad�

The

incr

ease

d ev

apor

atio

n re

sulte

d in

the

need

for m

ore

cool

ing

tow

er b

asin

cap

acity

and

a 2

foot

incr

ease

.

�A

ctio

ns ta

ken

to re

duce

the

heat

load

pro

vide

m

argi

n to

the

2 fo

ot in

crea

se

UH

S B

asin

Incr

ease

Pub

lic M

eetin

g to

Dis

cuss

U.S

. EP

R D

esig

n C

ertif

icat

ion

–UH

S –

Nov

embe

r 19,

201

29

UH

S B

asin

Incr

ease

Bas

in D

epth

In

crea

sed

2 fe

et

Pub

lic M

eetin

g to

Dis

cuss

U.S

. EP

R D

esig

n C

ertif

icat

ion

–UH

S –

Nov

embe

r 19,

201

210

�Ti

er 1

, Cha

pter

2.1

.5, 2

.7.1

1�

Tier

2, C

hapt

er 9

FSA

R c

hang

es

�Ta

ble

9.2.

5-1

�Ta

ble

9.2.

5-2

�Fi

gure

9.2

.5-3

�Ti

er 2

, Cha

pter

3.8

�Ti

er 2

, Cha

pter

16

Expe

cted

FSA

R C

hang

es

Pub

lic M

eetin

g to

Dis

cuss

U.S

. EP

R D

esig

n C

ertif

icat

ion

–UH

S –

Nov

embe

r 19,

201

211

�Sc

hedu

le�

AR

EVA

will

sub

mit

a re

vise

d re

spon

se to

RA

I 351

by

Janu

ary

31,

201

3

Sche

dule