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NR
C A
ging
Man
agem
ent
Pro
gram
Inc
ludi
ng L
ong
Ter
m O
pera
tion
(LT
O)
Dr.
App
ajos
ula
S. R
aoG
roup
Lea
der I
ASC
C P
rogr
aman
dC
. E. (
Gen
e) C
arpe
nter
, Jr.
Gro
up L
ead
for A
ging
Man
agem
ent I
ssue
sU
.S. N
ucle
ar R
egul
ator
y C
omm
issi
onO
ffice
of N
ucle
ar R
egul
ator
y R
esea
rch
For p
rese
ntat
ion
at th
e W
orks
hop
on C
halle
nges
on
the
Long
Ter
m
Ope
ratio
n, 2
1stSM
IRT
Mee
ting,
New
Del
hi, I
ndia
, Nov
. 8-1
1th
2011
OA
GI0
0014
07_0
0001
Uni
ted
Stat
es N
ucle
ar R
egul
ator
y C
omm
issi
on O
ffici
al H
earin
g Ex
hibi
t
In th
e M
atte
r of:
Ent
ergy
Nuc
lear
Ope
ratio
ns, I
nc.
(Indi
an P
oint
Nuc
lear
Gen
erat
ing
Uni
ts 2
and
3)
ASL
BP
#:07
-858
-03-
LR-B
D01
D
ocke
t #:0
5000
247
| 050
0028
6 Ex
hibi
t #:
Iden
tifie
d:
Adm
itted
: W
ithdr
awn:
R
ejec
ted:
St
ricke
n:
Oth
er: N
YS
0003
05-0
0-B
D01
10/1
5/20
1210
/15/
2012
ML1
1180
1154
NYS
0003
05
Subm
itted
: Dec
embe
r 22,
201
1
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
15 _________________________________________________________________ tA.
10
5 -\ ___ . _______ _____ • 5 3 . ---
O 1-· •• iii I i
11
----- _______ ._9_____ 10
6 6 6 6 5
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16 l4 _________________ _ _
12 11
10
7 7
5 I-I -1-11/ -1-1-- -- -
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]
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
rogr
am
•Ex
: Bet
ter t
estin
g an
d re
pair
inte
grity
ass
uran
ce m
etho
ds
need
edLi
fe B
eyon
d 60
Pro
gram
Indi
vidu
ally
, eac
h pr
ogra
m a
ddre
sses
a s
peci
fic p
ersp
ectiv
e;
colle
ctiv
ely,
they
add
ress
the
maj
ority
of i
ssue
s th
at n
eed
to b
e an
swer
ed fo
r saf
e ex
tend
ed o
pera
tions
.
vg 3
OA
GI0
0014
07_0
0003
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
OA
GI0
0014
07_0
0004
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
OA
GI0
0014
07_0
0005
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
Fuel: U0 2
SG vessel wall: low alloy steel
Pressurizer
'---Core Internals ILl -----
Condenser structural: I Water side: carbon steel
pump
304 55
Carbon steel '--- Alloy steel
Ex-vessel Systems and Balance of Plant
Power transformer
Agi
ng E
ffect
s fo
r Exi
stin
g N
PPs
"Bat
htu
b"
Cu
rve
6080100 re Rate
New
Dis
cove
ries
Agi
ng E
ffect
s
02040
-515
3555
7595
Tim
e
Failur
Unk
now
n Δ
T
vg 7
OA
GI0
0014
07_0
0007
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
GI0
0014
07_0
0008
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
GI0
0014
07_0
0009
�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
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
GI0
0014
07_0
0011
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
GI0
0014
07_0
0012
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
07_0
0013
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
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
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
vg 1
6
OA
GI0
0014
07_0
0016
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
7
OA
GI0
0014
07_0
0017
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
OA
GI0
0014
07_0
0018
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
9
OA
GI0
0014
07_0
0019
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
0
OA
GI0
0014
07_0
0020
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
OA
GI0
0014
07_0
0021
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
OA
GI0
0014
07_0
0022
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
vg 2
3
OA
GI0
0014
07_0
0023
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.
vg 2
4
OA
GI0
0014
07_0
0024
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
OA
GI0
0014
07_0
0025
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
OA
GI0
0014
07_0
0026
Recommended