NRC Aging Management Program Including Long Term Operation … · 2012. 12. 3. · NRC Aging...

26
NRC Aging Management Program Including Long Term Operation (LTO) Dr. Appajosula S. Rao Group Leader IASCC Program and C. E. (Gene) Carpenter, Jr. Group Lead for Aging Management Issues U.S. Nuclear Regulatory Commission Office of Nuclear Regulatory Research For presentation at the Workshop on Challenges on the Long Term Operation, 21 st SMIRT Meeting, New Delhi, India, Nov. 8-11 th 2011 OAGI0001407_00001 United States Nuclear Regulatory Commission Official Hearing Exhibit In the Matter of: Entergy Nuclear Operations, Inc. (Indian Point Nuclear Generating Units 2 and 3) ASLBP #: 07-858-03-LR-BD01 Docket #: 05000247 | 05000286 Exhibit #: Identified: Admitted: Withdrawn: Rejected: Stricken: Other: NYS000305-00-BD01 10/15/2012 10/15/2012 ML111801154 NYS000305 Submitted: December 22, 2011

Transcript of NRC Aging Management Program Including Long Term Operation … · 2012. 12. 3. · NRC Aging...

Page 1: NRC Aging Management Program Including Long Term Operation … · 2012. 12. 3. · NRC Aging Management Program Including Long Term Operation (LTO) Dr. Appajosula S. Rao Group Leader

NR

C A

ging

Man

agem

ent

Pro

gram

Inc

ludi

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Page 2: NRC Aging Management Program Including Long Term Operation … · 2012. 12. 3. · NRC Aging Management Program Including Long Term Operation (LTO) Dr. Appajosula S. Rao Group Leader

Global Age of NPPs

Source: International Atomic Energy Agency; http://www.iaea.or.at/programmes/a2/vg 2

OAGI0001407_00002

crtU.S.NRC United Scales Nuclear Regulatory Commission

Number of Operating Reactors by Age 35

33 32

30 ..... -- --- --- -- -- --- --- --- --. --. - --- -. -- -- --- -- --- -- --- --- -- . -- . -- . - --- --- --- -- --.. ~ -

25 ____________ 0 ___ __ • _____ • _________________________ 0 ______ __ • __________ .24.

22 22 21 II • • 21

20

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1 1

o 1 23 4 567 8 9 1011 121314151617181920 21 222324 252627 28293031 323334 353,37 3839 40 4142 43

Note: Age of a reactor is determined by its first grid connection. [year]

Page 3: NRC Aging Management Program Including Long Term Operation … · 2012. 12. 3. · NRC Aging Management Program Including Long Term Operation (LTO) Dr. Appajosula S. Rao Group Leader

Inte

grat

ion

of D

omes

tic N

ucle

ar

Res

earc

h Pr

ogra

ms

IND

US

TRY

•Pr

ofit

mot

ive

/ sh

areh

olde

r pe

rspe

ctiv

e•

Shor

t ter

m re

sear

ch

addr

essi

ng k

now

n pr

oble

ms

and

man

agin

g co

sts

/ d

ti

DO

E•

Long

term

na

tiona

l int

eres

t pe

rspe

ctiv

es•

Long

term

re

sear

ch

addr

essi

ng

pred

ictiv

e an

d i

t

NR

C•

Publ

ic h

ealth

and

sa

fety

pro

tect

ion

pers

pect

ive

•C

onfir

mat

ory

rese

arch

ad

dres

sing

kno

wn

safe

ty is

sues

dow

ntim

e

•Ex

: IAS

CC

–B

ette

r, fa

ster

wel

d re

pairs

nee

ded

for r

elia

bilit

y an

d re

duce

fiel

d re

pair

times

Long

Ter

m O

pera

bilit

y P

rogr

am

impr

ovem

ent

oppo

rtun

ities

•Ex

: C

rack

pre

curs

ors

and

irrad

iatio

n da

mag

e ne

ed to

be

unde

rsto

od fo

r bet

ter

pred

ictio

ns a

nd fu

ture

mat

eria

l se

lect

ion

LWR

Sus

tain

abili

ty P

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am

•Ex

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ter t

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grity

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maj

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to b

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.

vg 3

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Page 4: NRC Aging Management Program Including Long Term Operation … · 2012. 12. 3. · NRC Aging Management Program Including Long Term Operation (LTO) Dr. Appajosula S. Rao Group Leader

NR

C A

ging

Man

agem

ent

Res

earc

h A

ppro

ach

�Id

entif

y D

egra

datio

n Sc

enar

ios

Not

Add

ress

ed in

NU

REG

-18

01, “

Gen

eric

Agi

ng L

esso

ns L

earn

ed (G

ALL

) Rep

ort”

–Id

entif

y In

spec

tion

and

Mon

itorin

g P

rogr

ams

and

Ass

ocia

ted

Req

uire

men

ts fo

r Hig

hly

Like

ly D

egra

datio

n S

cena

rios

�A

sses

s R

esul

ts fr

om Im

plem

enta

tion

of L

icen

se R

enew

al

Ai

MtP

dR

dA

ging

Man

agem

ent P

rogr

ams

and

Rec

omm

end

Impr

ovem

ents

for S

ubse

quen

t Lic

ense

Ren

ewal

Per

iods

�D

evel

op D

omes

tic a

nd In

tern

atio

nal P

artn

ersh

ips

to S

hare

Ex

pert

ise,

Cap

abili

ties

and

Res

ourc

es R

elat

ed T

o A

ging

M

anag

emen

t Res

earc

h

vg 4

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Page 5: NRC Aging Management Program Including Long Term Operation … · 2012. 12. 3. · NRC Aging Management Program Including Long Term Operation (LTO) Dr. Appajosula S. Rao Group Leader

Mat

eria

ls D

egra

datio

n Is

sues

Key

�Ex

tend

ing

safe

ope

ratin

g lif

e of

NPP

s w

ill re

quire

co

mpa

ring

know

n m

odes

of m

ater

ials

deg

rada

tion,

an

d id

entif

ying

em

ergi

ng d

egra

datio

n m

echa

nism

s,

with

exp

ecte

d se

rvic

e lif

e to

iden

tify

pote

ntia

l iss

ues

–M

ater

ials

deg

rada

tion

can

lead

to in

crea

sed

mai

nten

ance

, in

crea

sed

dow

ntim

e, a

nd in

crea

sed

risk

�M

ater

ials

issu

es m

ust b

e re

solv

ed fo

r:–

Rea

ctor

Pre

ssur

e Ve

ssel

s an

d Pr

imar

y Pi

ping

–C

ore

Inte

rnal

s–

Seco

ndar

y Sy

stem

s –

Wel

dmen

ts–

Con

cret

e–

Cab

le in

sula

tion

–B

urie

d Pi

ping

vg 5

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Page 6: NRC Aging Management Program Including Long Term Operation … · 2012. 12. 3. · NRC Aging Management Program Including Long Term Operation (LTO) Dr. Appajosula S. Rao Group Leader

Aging R&D Areas

vg 6

OAGI0001407_00006

~U.S.NRC United States Nuclear Regubtory Comminion

Primary System Secondary System

Vessel: Alloy steel Clad: 308. 309 S5

RPV RPV: Alloy steel

RPV cladding: 308,30955

Control rod: 55 clad B4 C + 55 poison

Core structurals: 304 55

High strength: A 286, X

Fuel cladding: Zy-4, advanced Zr alloys

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Pressurizer

'---Core Internals ILl -----

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pump

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Ex-vessel Systems and Balance of Plant

Power transformer

Page 7: NRC Aging Management Program Including Long Term Operation … · 2012. 12. 3. · NRC Aging Management Program Including Long Term Operation (LTO) Dr. Appajosula S. Rao Group Leader

Agi

ng E

ffect

s fo

r Exi

stin

g N

PPs

"Bat

htu

b"

Cu

rve

6080100 re Rate

New

Dis

cove

ries

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ffect

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e

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now

n Δ

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vg 7

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Page 8: NRC Aging Management Program Including Long Term Operation … · 2012. 12. 3. · NRC Aging Management Program Including Long Term Operation (LTO) Dr. Appajosula S. Rao Group Leader

Mat

eria

ls D

egra

datio

n H

isto

ry•

1958

-Vi

brat

ion

Fatig

ue•

1966

-IG

SCC

in 3

04 S

S•

1970

-C

orro

sion

Fat

igue

•19

84 -

Eros

ion

Cor

rosi

on•

1987

-M

icro

bial

-Indu

ced

Ci

y = 7.

1429

x + 19

51.3

1980

1990

2000

2010

year)

Cor

rosi

on•

1993

-IG

SCC

in T

P347

St

ainl

ess

Stee

l •

2001

-PW

SCC

•??

???

1930

1940

1950

1960

1970

Vibr

ation

fatig

ueTP

304

IGSC

CCo

rr.-

fatig

ueEr

osion

-co

rr.MI

CTP

347

IGSC

CPW

SCC

Date (y

vg 8

OA

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0014

07_0

0008

Page 9: NRC Aging Management Program Including Long Term Operation … · 2012. 12. 3. · NRC Aging Management Program Including Long Term Operation (LTO) Dr. Appajosula S. Rao Group Leader

Proa

ctiv

e M

anag

emen

t of

Mat

eria

ls D

egra

datio

n•

Dev

elop

info

rmat

ion

–M

ater

ials

beh

avio

r–

Miti

gatio

n or

repa

ir–

Insp

ectio

n or

mon

itorin

g•

Pro

activ

ely

addr

ess

pote

ntia

l fut

ure

degr

adat

ion

–Av

oid

failu

res

–M

aint

ain

inte

grity

and

Avoi

d S

urpr

ises

e.g

. V.C

. Su

mm

er A

nd D

avis

Bes

se

gy

safe

ty•

Incr

ease

coo

pera

tion

–Pr

iorit

ize

PMM

D re

sear

ch

with

indu

stry

–Pu

rsue

add

ition

al

inte

rnat

iona

l col

labo

ratio

ns•

Eva

luat

e ex

istin

g re

quire

men

ts–

Inte

grity

of s

usce

ptib

le

com

pone

nts

–In

spec

tion

and

mon

itorin

g re

gula

tions

vg 9

OA

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0014

07_0

0009

Page 10: NRC Aging Management Program Including Long Term Operation … · 2012. 12. 3. · NRC Aging Management Program Including Long Term Operation (LTO) Dr. Appajosula S. Rao Group Leader

�Ex

tens

ion

of s

ervi

ce li

fe m

ay c

ause

new

cha

lleng

es fo

r m

ater

ials

ser

vice

•In

crea

sed

lifet

ime

lead

s to

incr

ease

d ex

posu

res

–Ti

me

at te

mpe

ratu

re–

Stre

ss–

Coo

lant

Proa

ctiv

e M

anag

emen

t of

Mat

eria

ls D

egra

datio

n

–N

eutr

ons

•Ex

tend

ing

reac

tor l

ife to

40,

60

year

s or

be

yond

will

like

ly in

crea

se s

usce

ptib

ility

an

d se

verit

y of

kno

wn

form

s of

de

grad

atio

n•

New

mec

hani

sms

of m

ater

ials

de

grad

atio

n ar

e po

ssib

le

�Th

e mot

ivatio

n of

seve

ral D

epar

tmen

t of E

nerg

y, Nu

clear

Reg

ulat

ory C

omm

issio

n an

d El

ectri

c Pow

er R

esea

rch

Inst

itute

pro

jects

is to

pro

vide i

mpr

oved

und

erst

andi

ng o

f de

grad

atio

n un

der e

xten

ded

serv

ice an

d pr

ovid

e alte

rnat

ive m

itiga

tion

stra

tegi

es.

OA

GI0

0014

07_0

0010

Page 11: NRC Aging Management Program Including Long Term Operation … · 2012. 12. 3. · NRC Aging Management Program Including Long Term Operation (LTO) Dr. Appajosula S. Rao Group Leader

Org

aniz

ed P

MD

A A

ppro

ach

�R

esea

rch

mus

t als

o id

entif

y ot

her o

r new

topi

cs b

efor

e th

ey

beco

me

life-

limiti

ng�

“Kno

win

g th

e un

know

ns”

is a

diff

icul

t pro

blem

that

mus

t be

addr

esse

d.�

Diff

icul

t iss

ue fo

r suc

h a

com

plex

and

var

ied

mat

eria

l/env

ironm

ent

syst

em.

�To

geth

er w

ith th

e D

OE

-LW

RS

prog

ram

, USN

RC

is w

orki

ng to

ex

pand

the

initi

alPM

DA

activ

ity(N

UR

EG69

23)t

oen

com

pass

expa

nd th

e in

itial

PM

DA

activ

ity (N

UR

EG69

23)t

o en

com

pass

br

oade

r sys

tem

s an

d lo

nger

life

times

.�

Cor

e in

tern

als

and

prim

ary

pipi

ng�

Pres

sure

Ves

sel

�C

oncr

ete

�C

ablin

g

�N

RC

upd

atin

g an

d ex

pand

ing

PMD

A to

cap

ture

op

erat

ing

perio

d be

yond

60

year

s an

d

to

exp

and

scop

e

OA

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0014

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0011

Page 12: NRC Aging Management Program Including Long Term Operation … · 2012. 12. 3. · NRC Aging Management Program Including Long Term Operation (LTO) Dr. Appajosula S. Rao Group Leader

Expa

nded

PM

DA

�N

RC

Dev

elop

ed N

UR

EG/C

R-6

923,

“Ex

pert

Pan

el R

epor

t on

Proa

ctiv

e M

ater

ials

Deg

rada

tion

Ass

essm

ent”

–Pu

blis

hed

Febr

uary

200

7–

Scop

e en

com

pass

ed p

assi

ve c

ompo

nent

s in

prim

ary,

sec

onda

ry

and

som

e te

rtia

ry s

yste

ms

of B

WR

s an

d PW

Rs,

the

failu

re o

f whi

ch

coul

d le

ad to

a re

leas

e of

radi

oact

ivity

or a

ffect

func

tiona

lity

of

safe

ty s

yste

ms

�N

RC

upd

atin

g an

d ex

pand

ing

PMD

A s

cope

to c

aptu

re

pg

pg

pp

oper

atin

g pe

riod

beyo

nd 6

0 ye

ars

–EM

DA

will

asc

erta

in g

aps

in p

rese

nt le

vel o

f und

erst

andi

ng o

f m

ater

ials

deg

rada

tion

durin

g su

bseq

uent

lice

nse

rene

wal

per

iods

�EM

DA

will

look

at m

ater

ials

in p

assi

ve, l

ong-

lived

sys

tem

s,

stru

ctur

es a

nd c

ompo

nent

s (e

.g.,

RPV

ste

els,

con

cret

e,

cabl

es, u

nder

grou

nd p

ipin

g, e

tc.)

–N

RC

and

DO

E LW

RSP

col

labo

ratin

g on

dev

elop

ing

EMD

A

vg 1

2

OA

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0014

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0012

Page 13: NRC Aging Management Program Including Long Term Operation … · 2012. 12. 3. · NRC Aging Management Program Including Long Term Operation (LTO) Dr. Appajosula S. Rao Group Leader

Met

al F

atig

ue

�A

naly

sis

met

hodo

logy

cou

ld y

ield

non

-co

nser

vativ

e re

sults

�Po

tent

ial d

elay

in im

plem

enta

tion

of p

lann

ed

corr

ectiv

e ac

tions

to a

ddre

ss a

ging

�R

equi

ring

licen

se re

new

al a

pplic

ants

to

dem

onst

rate

that

thei

r ana

lysi

s re

sults

are

co

nser

vativ

e

vg 1

3

OA

GI0

0014

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0013

Page 14: NRC Aging Management Program Including Long Term Operation … · 2012. 12. 3. · NRC Aging Management Program Including Long Term Operation (LTO) Dr. Appajosula S. Rao Group Leader

Subm

erge

d El

ectr

ical

C

able

s

�C

able

s no

t des

igne

d fo

r con

tinuo

us

subm

erge

d se

rvic

e in

ele

ctric

al m

anho

les

�C

able

failu

re c

an d

isab

le s

afet

y sy

stem

s

�R

evis

ed in

spec

tion

proc

edur

es a

nd p

rogr

am

guid

ance

to in

crea

se a

nd e

xpan

d in

spec

tion

and

test

freq

uenc

ies

vg 1

4

OA

GI0

0014

07_0

0014

Page 15: NRC Aging Management Program Including Long Term Operation … · 2012. 12. 3. · NRC Aging Management Program Including Long Term Operation (LTO) Dr. Appajosula S. Rao Group Leader

Elec

tric

Cab

le In

sula

tion

�C

able

failu

res

wor

ldw

ide

incr

easi

ng w

ith p

lant

age

�C

able

s pr

ovid

e po

wer

nee

ded

to o

pera

te e

quip

men

t an

d tr

ansm

it si

gnal

s to

and

from

the

vario

us c

ontr

olle

rs

�R

esea

rch

to c

onfir

m w

heth

er re

quire

men

ts fo

r ele

ctric

al

equi

pmen

t are

bei

ng m

et th

roug

h an

ext

ende

d pe

riod

vg 1

5

OA

GI0

0014

07_0

0015

Page 16: NRC Aging Management Program Including Long Term Operation … · 2012. 12. 3. · NRC Aging Management Program Including Long Term Operation (LTO) Dr. Appajosula S. Rao Group Leader

Stee

l Con

tain

men

t and

Lin

er

Plat

e D

egra

datio

n�

Cor

rosi

on d

ue to

wat

er le

akag

e or

con

tact

with

w

ood

or fo

reig

n ob

ject

s

�Po

tent

ial i

mpa

cts

on s

truc

tura

l int

egrit

y an

d le

ak

tight

ness

�O

btai

ned

appl

ican

t com

mitm

ents

for a

dditi

onal

in

spec

tions

and

incr

ease

d m

aint

enan

ce; i

ssui

ng

advi

sory

to o

ther

lice

nsee

s

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Neu

tron

Abs

orbe

r D

egra

datio

n

�Lo

ng-te

rm u

se o

f neu

tron

abs

orbe

rs in

spe

nt fu

el

pool

s le

ads

to d

efor

mat

ion

and

degr

adat

ion

of th

e m

ater

ials

�Po

tent

ially

redu

ce s

afet

y m

argi

ns a

nd m

ay v

iola

te

biti

liti

tsu

b-cr

itica

lity

requ

irem

ent

�D

evel

oped

new

agi

ng m

anag

emen

t pro

gram

for

neut

ron

abso

rbin

g m

ater

ials

deg

rada

tion

vg 1

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Ref

uelin

g C

avity

/Spe

nt

Fuel

Poo

l Lea

kage

�C

once

rns

rega

rdin

g th

e im

pact

s of

his

toric

al w

ater

le

akag

e fr

om c

oncr

ete

wal

ls a

nd fl

oors

�Po

tent

ial e

ffect

on

stru

ctur

al in

tegr

ity a

nd le

ak

tight

ness

�O

btai

ned

com

mitm

ents

from

lice

nse

rene

wal

ap

plic

ants

vg 1

8

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Bur

ied

Pipi

ng

�C

orro

sion

on

soil

side

of p

ipin

g

�Po

tent

ial e

ffect

s on

sys

tem

saf

ety

and

rele

ase

of

haza

rdou

s m

ater

ial

�En

hanc

ed a

genc

y gu

idan

ce to

incr

ease

insp

ectio

ns

and

focu

s on

key

pre

vent

ive

mea

sure

s

vg 1

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Prol

onge

d C

oncr

ete

Expo

sure

to H

igh

Tem

pera

ture

and

Rad

iatio

n

�Pr

olon

ged

expo

sure

to e

leva

ted

tem

pera

ture

s an

d ra

diat

ion

faci

litat

es c

hem

ical

inte

ract

ions

and

in

duce

s st

rain

s

�C

ompr

omis

e co

ncre

te p

erfo

rman

ce

�R

esea

rch

on s

uffic

ienc

y of

cur

rent

met

hods

to

eval

uate

effe

cts

and

the

effe

cts

them

selv

es

vg 2

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Rea

ctor

Ves

sel a

nd In

tern

als

�Irr

adia

tion

embr

ittle

men

tis

the

life-

limiti

ng fa

ctor

for

the

reac

tor v

esse

l and

cor

e in

tern

al c

ompo

nent

s

�N

RC

RES

is a

ctiv

ely

purs

uing

to c

ompi

le a

nd p

repa

re a

com

preh

ensi

ve d

atab

ase

of a

ll th

e in

form

atio

non

irrad

iatio

nem

britt

lem

ento

frea

ctor

vess

elan

din

form

atio

n on

irra

diat

ion

embr

ittle

men

tof r

eact

or v

esse

l and

co

re in

tern

al c

ompo

nent

s�

toco

nduc

t con

firm

ator

y re

sear

ch o

n IA

SCC

, neu

tron

em

britt

lem

enta

nd v

oid

swel

ling

in L

WR

reac

tor c

ore

inte

rnal

s

vg 2

1

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AM

P A

sses

smen

ts

�St

aff i

s pr

epar

ing

to a

sses

s th

e ab

ility

of

Lice

nsee

s’ A

ging

Man

agem

ent P

rogr

ams

to

succ

essf

ully

det

ect a

nd m

anag

e ag

ing

degr

adat

ion

ofsa

fety

rela

ted

syst

ems

degr

adat

ion

of s

afet

y-re

late

d sy

stem

s,

stru

ctur

es a

nd c

ompo

nent

s

vg 2

2

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Inte

rnat

iona

l For

um fo

r R

eact

or A

ging

Man

agem

ent

�IF

RA

M p

rom

otes

wor

ldw

ide

coop

erat

ion

to a

ddre

ss N

PP a

ging

m

anag

emen

t iss

ues

–C

oope

ratio

n in

clud

es s

harin

g of

dat

a an

d sp

ecim

ens

as w

ell a

s fa

cilit

atin

g jo

int r

esea

rch

agen

das

and

prom

otin

g w

ork

that

add

ress

es

high

prio

rity

issu

es a

nd c

once

rns.

�Pa

rtic

ipat

ion

in IF

RA

M p

rovi

des

an e

xten

ded

pool

of r

esou

rces

an

d ex

pert

ise

to w

ork

on c

omm

on p

robl

ems

–Pr

omot

e gl

obal

coo

pera

tion

on m

anag

emen

t of r

eact

or a

ging

IFR

AM

dl

ii

iff

–IF

RA

M d

oes

not r

epla

ce a

ny e

xist

ing

coop

erat

ive

effo

rts

�IF

RA

M’s

ratio

nale

is th

at:

–O

rgan

izat

ions

wor

ldw

ide

shar

e co

mm

on c

halle

nges

–M

agni

tude

and

sco

pe o

f the

se c

halle

nges

is b

eyon

d w

hat a

ny o

ne

orga

niza

tion

can

acco

mpl

ish

with

thei

r lim

ited

time

and

reso

urce

s–

Coo

pera

tion

is a

pow

erfu

l too

l to

econ

omiz

e re

sour

ces,

sav

e tim

e, a

nd

min

imiz

e ne

edle

ss d

uplic

atio

n of

effo

rts

in a

ddre

ssin

g

th

ese

chal

leng

es

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Con

cept

Beh

ind

IFR

AM

�IF

RA

M w

ill c

onso

lidat

e av

aila

ble

info

rmat

ion,

coo

rdin

ate

coop

erat

ion

on a

ctiv

ities

, fac

ilita

te in

form

atio

n ex

chan

ge

and

prov

ide

oppo

rtun

ities

to b

ring

toge

ther

diff

eren

t na

tiona

l and

regi

onal

vie

ws

on to

pics

and

, whe

re

appr

opria

te, h

arm

oniz

e ag

reed

-upo

n be

st p

ract

ices

�IF

RA

M w

ill c

oope

rate

with

man

y pa

rtie

s an

d cu

t acr

oss

nu

mer

ous

boun

darie

s bu

t it w

ill n

ot re

plac

e an

y co

oper

atio

n ff

tth

ttl

it

effo

rts

that

cur

rent

ly e

xist

Its b

asic

role

is to

faci

litat

e re

sear

ch a

nd in

form

atio

n sh

arin

g�

IFR

AM

is n

otin

tend

ed to

be

an N

RC

-led

(or r

egul

ator

y-le

d,

utili

ty-le

d, u

nive

rsity

-led,

or r

esea

rch

orga

niza

tion-

led)

ent

ity–

Sinc

e m

embe

rshi

p in

IFR

AM

is o

pen

to a

ll or

gani

zatio

ns,

le

ader

ship

role

s w

ill b

e gi

ven

thos

e m

embe

rs w

illin

g to

supp

ort I

FRA

M’s

goa

ls.

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Third

Inte

rnat

iona

l Con

fere

nce

on N

PP L

ife

Man

agem

ent f

or L

ong

Term

Ope

ratio

n

14-1

8 M

ay 2

012

Salt

Lak

e C

ity, U

tah

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Con

clus

ion

�R

esea

rch

is n

eces

sary

to e

stab

lish

basi

s fo

r lon

g-te

rm o

pera

tion

of

exis

ting

nucl

ear p

lant

s be

yond

60

year

s, a

nd th

is re

sear

ch w

ill:

–An

swer

saf

ety

ques

tions

on

agin

g, re

liabi

lity,

and

long

-term

ope

rabi

lity

of

syst

ems,

str

uctu

res

and

com

pone

nts

�In

dust

ry h

as le

ad ro

le to

driv

e th

e pr

oces

s an

d id

entif

y is

sue

reso

lutio

ns–

Ulti

mat

ely

life

exte

nsio

nis

utili

tybu

sine

ssde

cisi

onU

ltim

atel

y, li

fe e

xten

sion

is u

tility

bus

ines

s de

cisi

on

�N

RC

ens

ures

that

saf

ety-

sign

ifica

nt is

sues

are

iden

tifie

d an

d re

solv

ed in

a ti

mel

y m

anne

r–

It is

not

NR

C’s

resp

onsi

bilit

y to

reso

lve

any

pote

ntia

l agi

ng is

sues

that

may

im

pact

con

tinue

d sa

fe o

pera

tion

of e

xist

ing

fleet

–N

RC

see

king

to c

oope

rate

/col

labo

rate

with

DO

E, d

omes

tic in

dust

ry a

nd

inte

rnat

iona

l par

tner

s in

an

inte

grat

ed, h

olis

tic p

rogr

am to

ens

ure

long

-term

saf

ety

vg 2

6

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