2013/05/23 areva epr dc - areva presentation for public ... · subject: areva presentation for...
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ArevaEPRDCPEm Resource
From: WILLIFORD Dennis (AREVA) [[email protected]]Sent: Thursday, May 23, 2013 4:46 PMTo: Snyder, AmyCc: Gleaves, Bill; HOLM Jerald (EXTERNAL AREVA); GUCWA Len (EXTERNAL AREVA);
VANCE Brian (AREVA); UYEDA Graydon (AREVA)Subject: AREVA Presentation for Public Meeting on May 30th to Discuss Single Failed SPNDAttachments: Single Failed SPND Presentation NON-PROPRIETARY.pdf
Attached is AREVA NP’s presentation for the public meeting next Thursday, May 30th at 1 pm to provide an update on the status of U.S. EPR Open Item RAI 505 Q 07.01-33 [Undetected Single Failure of a Self-Powered Neutron Detector (SPND)] . AREVA NP considers some of the material contained in the slides to be proprietary information. Attached is the redacted PUBLIC version of the presentation. The Proprietary version and accompanying affidavit will be submitted separately. 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: [email protected]
Hearing Identifier: AREVA_EPR_DC_RAIs Email Number: 4494 Mail Envelope Properties (554210743EFE354B8D5741BEB695E65616A4FE) Subject: AREVA Presentation for Public Meeting on May 30th to Discuss Single Failed SPND Sent Date: 5/23/2013 4:45:55 PM Received Date: 5/23/2013 4:46:18 PM From: WILLIFORD Dennis (AREVA) Created By: [email protected] Recipients: "Gleaves, Bill" <[email protected]> Tracking Status: None "HOLM Jerald (EXTERNAL AREVA)" <[email protected]> Tracking Status: None "GUCWA Len (EXTERNAL AREVA)" <[email protected]> Tracking Status: None "VANCE Brian (AREVA)" <[email protected]> Tracking Status: None "UYEDA Graydon (AREVA)" <[email protected]> Tracking Status: None "Snyder, Amy" <[email protected]> Tracking Status: None Post Office: FUSLYNCMX03.fdom.ad.corp Files Size Date & Time MESSAGE 772 5/23/2013 4:46:18 PM Single Failed SPND Presentation NON-PROPRIETARY.pdf 1125831 Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date: Recipients Received:
Publ
ic M
eetin
g to
Pro
vide
U
pdat
e on
U.S
. EPR
FSA
R
Ope
n Ite
m o
n R
AI 5
05 Q
07
.01-
33 –
Sing
le F
ailu
re
SPN
DA
RE
VA/N
RC
Mee
ting
5/30
/201
3
Ran
dy E
llison
Jerr
y H
olm
Will
iam
Wal
ters
2U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
Age
nda
�In
trod
uctio
n�
Ove
rvie
w o
f Iss
ue�
Stat
ic S
etpo
ints
�D
ynam
ic C
ompe
nsat
ion
�Su
mm
ary
�N
ext S
teps
3U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
Purp
ose
and
Bac
kgro
und
�Pu
rpos
e�
Upd
ate
the
NR
C o
n st
atus
of U
.S. E
PR F
SAR
ope
n ite
ms
for R
AI 5
05 Q
07.
01-3
3 –
unde
tect
ed s
ingl
e fa
ilure
of a
se
lf po
wer
ed n
eutr
on d
etec
tor (
SPN
D)
�Pr
ovid
e pr
elim
inar
y re
sults
and
und
erst
andi
ng o
f the
is
sue
4U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
RA
I Q
uest
ion
No.
Topi
c/Su
bjec
tA
dvan
ce to
N
RC
Fina
l to
NR
C50
507
.01-
33S
ingl
e fa
ilure
inan
SP
ND
6/28
/201
37/
30/2
013
Rev
ised
topi
cal r
epor
t AN
P-1
0287
P6/
28/2
013*
8/30
/201
3**
*mar
kups
and
inse
rts**
Rec
omm
end
7/30
/201
3to
mat
ch R
AI
Sche
dule
for O
pen
Item
s fo
r RA
I 505
Q
07.
01-3
3
5U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
RA
I 505
Q 0
7.01
-33
�Q
uest
ion
07.0
1-33
:�
OPE
N IT
EM�
Prov
ide
an e
valu
atio
n of
the
mos
t lim
iting
loca
tion
of th
e un
dete
cted
si
ngle
failu
re o
f a s
elf-p
ower
ed n
eutr
on d
etec
tor (
SPN
D).
In a
dditi
on,
iden
tify
any
chan
ges
to th
e In
spec
tions
, Tes
ts, A
naly
ses,
and
A
ccep
tanc
e C
riter
ia (I
TAA
C) a
nd C
ombi
ned
Lice
nse
(CO
L) a
ctio
n ite
ms
asso
ciat
ed w
ith th
e ne
w s
etpo
int m
etho
d.�
In A
ttach
men
t 2 o
f the
lette
r dat
ed, M
ay 2
4, 2
011,
the
appl
ican
t pr
opos
ed to
revi
se th
e To
pica
l Rep
ort A
NP-
1028
7P, “
Inco
re T
rip
Setp
oint
and
Tra
nsie
nt M
etho
dolo
gy F
or U
.S. E
PR,”
Rev
isio
n 0,
to
add
the
met
hod
for i
nclu
ding
the
unde
tect
ed S
PND
failu
re a
nd
perf
orm
nec
essa
ry C
hapt
er 1
5 tr
ansi
ent a
naly
ses
taki
ng c
redi
t of t
his
SPN
D-b
ased
inco
re lo
w d
epar
ture
from
nuc
leat
e bo
iling
ratio
n (L
DN
BR
) and
hig
h lin
ear p
ower
den
sity
(HLP
D) t
rips.
In th
ese
two
new
sub
mitt
als,
the
staf
f req
uest
s th
e ap
plic
ant t
o (1
) inc
lude
the
unce
rtai
nty
anal
ysis
and
met
hod
taki
ng in
to a
ccou
nt th
e po
ssib
le
unde
tect
ed s
ingl
e fa
ilure
of S
PND
at t
he m
ost l
imiti
ng lo
catio
n; (2
) pr
ovid
e an
eva
luat
ion
of th
e m
ost l
imiti
ng lo
catio
n of
the
unde
tect
ed
sing
le fa
ilure
of S
PND
; (3)
eva
luat
e th
e im
pact
on
the
DN
BR
un
ders
hoot
due
to th
is n
ew S
PND
und
etec
ted
sing
le fa
ilure
; and
(4)
iden
tify
any
chan
ges
to th
e IT
AA
C a
nd C
OL
actio
n ite
ms
asso
ciat
ed
with
the
new
set
poin
t met
hod.
Ran
dy E
llison
Ove
rvie
w o
f Iss
ue
7U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
Obj
ectiv
e
�Pr
ovid
e an
ove
rvie
w o
f the
app
roac
h to
inco
rpor
ate
the
unde
tect
ed fa
ilure
of a
n SP
ND
in th
e U
.S. E
PR™
sa
fety
ana
lysi
s ba
ses.
�H
ighl
ight
how
the
failu
re is
impl
emen
ted
in m
etho
ds�
Dis
cuss
the
setp
oint
met
hod
(AN
P-10
287P
) in
conj
unct
ion
with
th
e SP
ND
failu
re�
Des
crib
e th
e m
anne
r in
whi
ch th
e m
etho
d of
trip
thre
shol
d ge
nera
tion
prov
ides
the
sam
e le
vel o
f pro
tect
ion
for t
he s
afet
y lim
its
8U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
Bac
kgro
und
�R
edun
danc
y, s
ingl
e fa
ilure
and
the
SPN
Ds
�A
ll 72
SPN
D s
igna
ls a
re d
istr
ibut
ed to
eac
h of
the
four
redu
ndan
t pr
otec
tion
syst
em d
ivis
ions
�
The
SPN
Ds
them
selv
es a
re n
ot re
dund
ant t
o ea
ch o
ther
�Th
e al
tern
ativ
e re
ques
t, ac
cept
able
leve
l of p
rote
ctio
n, a
nd
cons
erva
tive
setp
oint
sel
ectio
n•
Det
ecte
d fa
ilure
-Trip
thre
shol
d sh
ift to
mor
e re
stric
tive
valu
e-T
hres
hold
is c
alcu
late
d th
roug
h ap
plic
atio
n of
the
stat
istic
al m
etho
ds to
a s
erie
s of
ra
ndom
faile
d se
nsor
cal
cula
tions
•U
ndet
ecte
d fa
ilure
-Low
pro
babi
lity,
non
-sel
f ann
ounc
ing
failu
res
may
be
post
ulat
ed in
the
SP
ND
am
plifi
catio
n an
d si
gnal
mul
tiplic
atio
n eq
uipm
ent
-Inc
lude
failu
re o
f the
mos
t lim
iting
SP
ND
resp
onse
as
an in
itial
con
ditio
n in
the
trip
thre
shol
d de
term
inat
ion
and
trans
ient
com
pens
atio
n co
nfirm
atio
n in
add
ition
to
any
det
ecte
d fa
ilure
s
9U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
Bac
kgro
und
(Con
tinue
d)
�U
.S. E
PR™
FSA
R C
hapt
er 1
5�
Orig
inal
sub
mis
sion
did
not
incl
ude
an u
ndet
ecte
d SP
ND
failu
re
as a
cre
dibl
e si
ngle
failu
re�
Non
sel
f-ann
ounc
ing
failu
re w
ithin
sig
nal c
ondi
tioni
ng m
odul
es
can
be in
corp
orat
ed a
s pr
opos
ed in
the
alte
rnat
ive
requ
est
�A
ltern
ativ
e re
ques
t app
roac
h�
Util
ize
the
exis
ting
AN
P-10
287P
met
hodo
logy
�
Mod
ify in
puts
and
met
hods
to e
xplic
itly
acco
unt f
or th
e un
dete
cted
failu
re o
f the
mos
t lim
iting
SPN
D re
spon
se•
Rem
ove
mos
t lim
iting
stri
ng (D
NB
R/Q
ualit
y) o
r SP
ND
(HLP
D) w
hen
dete
rmin
ing
the
stat
ic s
etpo
ints
or v
erify
ing
the
dyna
mic
com
pens
atio
n�
DC
R a
ppro
ved
to re
stric
t the
failu
res
to a
sin
gle
unde
tect
ed
SPN
D fa
ilure
per
am
plifi
er m
odul
e
10U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
Con
cept
ual P
ath
Ove
rvie
w
�A
NP-
1028
7P�
Sens
ed v
s. R
efer
ence
(LPD
&
DN
BR
)•
Fund
amen
tal c
once
pt o
f the
m
etho
dolo
gy•
Des
ire to
qua
ntify
the
diffe
renc
e be
twee
n w
hat t
he P
S s
ense
s an
d th
e re
al c
ore
cond
ition
�C
ore
pow
er d
istr
ibut
ion
is p
rovi
ded
to th
e m
etho
dolo
gy a
s si
mul
ated
SP
ND
resp
onse
s•
Faci
litat
es s
imul
atio
n of
the
refe
renc
e co
re c
ondi
tion
and
the
sens
ed c
ore
cond
ition
with
the
requ
isite
un
certa
intie
s
y
SPN
D R
espo
nses
(Pow
er D
istr
ibut
ions
)O
ther
Par
amet
ers
(Unc
erta
intie
s, p
ress
ure,
te
mpe
ratu
re, f
low
, …)
S-R
ELA
P5(P
lant
Res
pons
e 15
.1, 1
5.2,
etc
.)
AN
P-10
287P
Trip
Thr
esho
ld D
eter
min
atio
n D
ynam
ic C
ompe
nsat
ion
Con
firm
atio
n
Dyn
amic
C
ompe
nsat
ion
Con
firm
ed (y
/n)
FSA
R R
esul
ts
ΔDN
BR
D
eter
min
e R
equi
red
Initi
al
Mar
gin
for L
CO
n
11U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
Clo
sed
mee
ting
12U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
Stat
ic T
rip T
hres
hold
Det
erm
inat
ion
13U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
Con
cept
ual I
llust
ratio
n of
M
onito
red
DN
BR
Dis
trib
utio
n
14U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
Exam
ple
-Tra
nsie
nt P
S R
espo
nse
and
RT
Thre
shol
d�
The
refe
renc
e D
NB
R re
mai
ns
the
sam
e�
The
eval
uatio
n of
the
dyna
mic
co
mpe
nsat
ion
acco
unts
for
dete
cted
failu
res
and
the
unde
tect
ed
failu
re�
The
safe
ty li
mit
is re
spec
ted
with
the
sam
e co
vera
ge a
nd
conf
iden
ce
15U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
2.5
DN
BR
LC
O
Exam
ple
Illus
trat
ion
–Im
bala
nce
/ Rod
D
rop
1 of
4 T
rip T
hres
hold
Mod
ifica
tion
2.1
IMB
DN
BR
RT
3.2
Bes
t Est
imat
e N
omin
al
1.0
Safe
ty L
imit
2.5
DN
BR
LC
OIM
B D
NB
R R
T
1.0
Safe
ty L
imit
3.2
Bes
t Est
imat
e N
omin
al
•Lev
el o
f pro
tect
ion
of th
e sa
fety
lim
it is
unc
hang
ed.
•The
impa
ct is
see
n as
a re
duct
ion
in o
pera
ting
mar
gin
DN
BR
RT
setp
oint
in
crea
se
16U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3Sum
mar
y �
The
unde
tect
ed fa
ilure
of t
he m
ost l
imiti
ng S
PND
is
impl
emen
ted
as a
mod
ifica
tion
of th
e ex
istin
g A
NP-
1028
7P m
etho
dolo
gy�
AN
P-10
287P
des
crib
es th
e st
atis
tical
tech
niqu
es u
tiliz
ed in
U.S
. EPR
se
tpoi
nt m
etho
ds, a
s w
ell a
s th
e de
sign
bas
is fo
r the
inco
re tr
ip a
nd
LCO
func
tions
�Th
e st
atis
tical
tech
niqu
es a
nd d
esig
n ba
sis
are
not a
ltere
d by
co
nsid
erat
ion
of a
n un
dete
cted
failu
re�
The
inco
re tr
ip th
resh
olds
will
be
decr
ease
d (H
LPD
) and
incr
ease
d (L
ow D
NB
R) a
s di
ctat
ed b
y th
e A
NP-
1028
7P m
etho
dolo
gy to
pro
vide
th
e re
quire
d sa
fety
lim
it pr
otec
tion.
�D
iscu
ssio
n of
the
trea
tmen
t of t
he u
ndet
ecte
d SP
ND
failu
re w
ill b
e ad
ded
�C
hang
es to
the
FSA
R�
Upd
ate
of th
e m
odifi
ed tr
ip th
resh
olds
�In
clus
ion
of a
n ad
ditio
nal s
ectio
n in
Cha
pter
15
to d
escr
ibe
the
man
ner i
n w
hich
the
unde
tect
ed S
PND
failu
re is
add
ress
ed in
the
safe
ty a
naly
ses.
�U
pdat
es to
the
affe
cted
tran
sien
ts d
iscu
ssio
n an
d pl
ots
17U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
Proc
ess
�R
evie
wed
cal
cula
tions
and
repo
rts
for t
he ti
me
of D
C
subm
ittal
and
pre
viou
s R
AI r
espo
nses
�Ex
amin
ed m
etho
dolo
gy fo
r com
plia
nce
with
topi
cal
repo
rts
�Pe
rfor
med
fres
h re
view
of t
he is
sues
to d
efin
e w
orks
cope
and
iden
tify
any
pote
ntia
l err
ors/
omis
sion
s in
the
met
hod
�D
ivid
ed w
orks
cope
into
thre
e m
ajor
effo
rts
�St
atic
set
poin
t ana
lysi
s�
Tran
sien
t set
poin
t app
licat
ion
(dyn
amic
com
pens
atio
n)�
Tran
sien
t ass
essm
ent
�C
ondi
tion
Rep
orts
wer
e id
entif
ied
and
reso
lutio
ns
incl
uded
18U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
Sum
mar
y of
Con
ditio
n R
epor
ts
�Im
bala
nce
calc
ulat
ion
in th
e st
atic
set
poin
t as
sess
men
t ove
r pre
dict
ed im
bala
nce
by fa
ctor
of
two
�C
ompl
ianc
e w
ith to
pica
l rep
orts
�C
HF
unce
rtai
nty
appl
icat
ion
�In
cons
iste
nt in
puts
at v
ario
us s
tage
s�
Unc
erta
intie
s an
d di
strib
utio
n of
unc
erta
intie
s us
ed�
Con
ditio
ns in
the
tran
sien
t ana
lysi
s ev
alua
tion
�Tr
ansi
ent a
naly
sis
did
not c
onsi
der d
etec
ted
SPN
D fa
ilure
s�
Unv
erifi
ed a
ssum
ptio
ns u
sed
�C
ore
shap
e sc
alin
g m
etho
ds in
com
plet
e or
inap
prop
riate
�C
ondi
tions
foun
d in
the
calc
ulat
ions
sup
port
ing
the
asym
met
ric
even
ts
19U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
Sum
mar
y of
Con
ditio
n R
epor
ts
�In
corr
ect t
ext i
n to
pica
l rep
ort
AN
P-10
287P
(not
rela
ted
to S
PND
failu
res)
�D
ue to
num
ber o
f iss
ues
foun
d, a
hig
her
leve
l Con
ditio
n R
epor
t was
writ
ten
�R
oot c
ause
ana
lysi
s
Ran
dy E
llison
Stat
ic S
etpo
ints
21U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
Stat
ic S
etpo
ints
�C
ode
and
inpu
ts m
odifi
ed to
add
ress
the
incl
usio
n of
an
und
etec
ted
failu
re�
[
]�
Und
etec
ted
failu
re a
ssum
ed in
the
mos
t con
serv
ativ
e lo
catio
n in
the
core
for t
he g
iven
mon
itore
d pa
ram
eter
�D
NB
R/Q
ualit
y –
wor
st s
trin
g lo
catio
n�
HLP
D/S
PND
Imba
lanc
e –
wor
st s
enso
r loc
atio
n�
Rel
ativ
ely
smal
l diff
eren
ces
due
to th
e in
clus
ion
of th
e un
dete
cted
failu
re fo
r sym
met
ric c
ases
�A
ll de
tect
ors
are
clos
e in
thei
r sen
sed
read
ing,
resu
lting
in s
imila
r th
resh
olds
22U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
Stat
ic S
etpo
ints
�A
sym
met
ric c
ases
sho
w g
reat
er im
pact
�A
s ex
pect
ed, a
larg
er n
umbe
r of f
ailu
res
will
lead
to m
ore
cons
erva
tive
thre
shol
ds (h
ighe
r DN
BR
and
low
er H
LPD
) due
to le
ss
accu
rate
sen
sing
of t
he c
ore
pow
er•
Mos
t lim
iting
loca
tion
alw
ays
assu
med
for t
he u
ndet
ecte
d fa
ilure
•Th
e ef
fect
on
the
thre
shol
d is
gre
ater
than
the
stat
istic
al tr
eatm
ent o
f det
ecte
d fa
ilure
s si
nce
it de
term
inis
tical
ly re
mov
es th
e m
ost l
imiti
ng c
ondi
tion
from
the
thre
shol
d de
term
inat
ion
�Th
resh
old
used
for b
inni
ng s
ymm
etric
and
asy
mm
etric
cas
es
impo
rtan
t for
ass
essi
ng th
e im
pact
•A
n er
ror i
n th
e ca
lcul
atio
n of
the
imba
lanc
e le
d to
mor
e ca
ses
endi
ng u
p in
the
asym
met
ric b
in th
an s
houl
d ha
ve b
een
plac
ed th
ere
(Con
ditio
n R
epor
t iss
ued)
•C
orre
cted
the
erro
r and
the
sym
met
ric th
resh
old
was
affe
cted
�Th
resh
old
valu
es in
crea
se a
s a
resu
lt of
the
com
bina
tion
of th
e
unde
tect
ed fa
ilure
and
the
erro
r in
the
imba
lanc
e ca
lcul
atio
n �
Ove
rly c
onse
rvat
ive
asym
met
ric te
mpe
ratu
re
prof
iles
have
bee
n re
mov
ed•
90°
F qu
adra
nt-to
-qua
dran
t �T
case
s re
mov
ed w
ith b
enef
it to
the
imba
lanc
e th
resh
old
23U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
Stat
ic S
etpo
ints
�D
eter
min
atio
n of
the
wor
st S
PND
loca
tion
ensu
res
the
wor
st lo
catio
n is
cho
sen
for e
ach
trip
func
tion
�Fo
r DN
BR
, the
ass
umed
und
etec
ted
failu
re is
alw
ays
plac
ed in
the
mos
t lim
iting
str
ing,
that
bei
ng th
e on
e w
hich
wou
ld le
ad to
a g
reat
er
setp
oint
•If
the
trip
thre
shol
d w
ould
be
base
d up
on th
e 2n
dm
inim
um, t
he u
ndet
ecte
d fa
ilure
re
sults
in a
thre
shol
d ba
sed
upon
the
3rd
min
imum
(rai
ses
the
requ
ired
thre
shol
d)�
For Q
ualit
y, th
e as
sum
ed u
ndet
ecte
d fa
ilure
is a
lway
s pl
aced
in th
e m
ost l
imiti
ng s
trin
g, th
at b
eing
the
one
whi
ch w
ould
lead
to a
low
er
setp
oint
•If
the
trip
thre
shol
d w
ould
be
base
d up
on th
e 2n
dm
axim
um, t
he u
ndet
ecte
d fa
ilure
re
sults
in a
thre
shol
d ba
sed
upon
the
3rd
max
imum
(low
ers
the
thre
shol
d)�
For H
LPD
, the
ass
umed
und
etec
ted
failu
re is
alw
ays
plac
ed in
the
mos
t lim
iting
SPN
D lo
catio
n , t
hat b
eing
the
one
whi
ch w
ould
lead
to a
low
er
setp
oint
•If
the
trip
thre
shol
d w
ould
be
base
d up
on th
e 2n
dm
axim
um, t
he u
ndet
ecte
d fa
ilure
re
sults
in th
e th
resh
old
base
d up
on th
e 3r
dm
axim
um (l
ower
s th
e th
resh
old)
24U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
Stat
ic S
etpo
ints
�O
bser
vatio
ns�
Very
con
serv
ativ
e as
ymm
etric
tem
pera
ture
sha
pes
are
driv
ing
setp
oint
thre
shol
ds�
Rem
oved
som
e sh
apes
repr
esen
ting
very
hig
h qu
adra
nt-
to-q
uadr
ant t
empe
ratu
re d
iffer
ence
s ba
sed
upon
ve
rific
atio
n of
tran
sien
t beh
avio
rs•
Impr
oved
thre
shol
d va
lues
in s
ome
case
s
25U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
Stat
ic S
etpo
ints
�O
bser
vatio
ns o
f the
und
etec
ted
failu
re e
ffect
s�
Incr
ease
s th
e lik
elih
ood
of a
n en
tire
quad
rant
(thr
ee S
PND
str
ings
) be
ing
rem
oved
for c
onsi
dera
tion
in D
NB
R/q
ualit
y•
Pre
viou
s an
alys
is a
ssum
ed fa
ilure
s in
stri
ngs
inde
pend
ent o
f the
loca
tions
w
hen
rand
omly
sam
plin
g w
hich
led
to m
ore
case
s w
ith a
ll qu
adra
nts
repr
esen
ted
�Lo
ss o
f an
entir
e qu
adra
nt o
f str
ings
has
a s
igni
fican
t im
pact
on
asym
met
ric c
ore
pow
er s
hape
s•
The
wor
st p
ower
pea
king
may
not
be
mea
sure
d�
With
out p
reve
ntin
g th
e lo
ss o
f a fu
ll qu
adra
nt, a
llow
ing
for t
he
unde
tect
ed fa
ilure
resu
lts in
not
icea
ble
loss
of o
pera
ting
mar
gin
�To
pre
vent
loss
of a
full
quad
rant
, ana
lysi
s ru
les
are
used
to e
nsur
e pr
otec
tion
and
redu
ce c
hanc
e of
spu
rious
trip
s�
Rul
es to
be
impl
emen
ted
by T
echn
ical
Spe
cific
atio
n an
d C
OLR
26U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
Rul
es fo
r Det
ecte
d Fa
ilure
s
�N
umbe
r of S
PND
str
ings
with
det
ecte
d fa
ilure
s lim
ited
to o
ne s
trin
g pe
r qua
dran
t�
A s
trin
g is
con
side
red
faile
d if
one
or m
ore
SPN
Ds
in th
e st
ring
are
faile
d�
With
und
etec
ted
failu
re, e
ach
quad
rant
will
hav
e at
leas
t one
st
ring
avai
labl
e�
Lim
its th
e to
tal n
umbe
r of s
trin
gs a
llow
ed to
be
faile
d to
fo
ur (4
)
�N
umbe
r of S
PND
failu
res
limite
d to
five
�Ev
alua
ted
coin
cide
nt w
ith ru
le o
n st
rings
�Fi
ve S
PND
failu
res
requ
ires
that
at l
east
two
of th
e fa
ilure
s ha
ve to
be
in th
e sa
me
strin
g
27U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
Rul
es fo
r Det
ecte
d Fa
ilure
s
28U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
Stat
ic S
etpo
ints
Rec
omm
ende
dD
NB
R S
etpo
ints
Num
bero
f D
etec
ted
SP
ND
Stri
ng
Failu
res
Orig
inal
R
T S
etpo
int
RT
Set
poin
tR
T RD
/IMB
Set
poin
tLC
O
01.
952.
302.
352.
501
Not
ca
lcul
ated
2.35
2.40
2.50
2N
ot
calc
ulat
ed2.
402.
502.
55
3N
ot
calc
ulat
ed2.
452.
552.
60
4N
ot
calc
ulat
ed2.
502.
602.
65
52.
10N
/AN
/AN
/A
29U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
Stat
ic S
etpo
ints
Rec
omm
ende
d Q
ualit
y Th
resh
olds
Num
bero
f D
etec
ted
SP
ND
S
tring
Fa
ilure
s
Orig
inal
RT
Set
poin
tR
TS
etpo
int
RT I
MB
/RD
00.
250.
250.
201
Not
calc
ulat
ed0.
250.
202
Not
calc
ulat
ed0.
250.
203
Not
calc
ulat
ed0.
250.
204
Not
calc
ulat
ed0.
250.
205
0.25
N/A
N/A
30U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
Stat
ic S
etpo
ints
Rec
omm
ende
dH
LPD
Set
poin
ts (W
/cm
)N
umbe
rof
Det
ecte
d S
PN
D F
ailu
res
Orig
inal
R
T S
etpo
int
RT
Set
poin
tR
T RD
/IMB
Set
poin
tLC
O
046
046
038
535
01
Not
calc
ulat
ed46
038
535
0
2N
otca
lcul
ated
445
385
350
3N
otca
lcul
ated
445
385
350
4N
otca
lcul
ated
440
385
350
546
044
038
535
0
31U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
Plan
ned
Topi
cal R
epor
t Cha
nges
�U
pdat
es fo
r des
crip
tion
of u
ndet
ecte
d SP
ND
failu
res
in m
etho
ds�
Des
crip
tion
of a
llow
ed S
PND
failu
re ru
les
�C
hang
es to
App
endi
ces
F an
d G
(not
re
late
d to
SPN
D fa
ilure
s)
Willi
am F
. Wal
ters
Prin
cipa
l Eng
inee
r
Dyn
amic
Com
pens
atio
n w
ith a
n U
ndet
ecte
d SP
ND
Fai
lure
33U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
Age
nda
�Ef
fect
of a
n un
dete
cted
SPN
D fa
ilure
on
the
inco
re tr
ansi
ent a
naly
sis
�SP
ND
failu
re lo
catio
n de
term
inat
ion
�Ex
ampl
es w
ith a
n un
dete
cted
SPN
D fa
ilure
�In
crea
se in
Fee
dwat
er F
low
(IFF
) Eve
nt (S
RP
15.1
.2)
�Su
mm
ary
�St
atus
Upd
ate
34U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
Inco
re T
rans
ient
Ana
lysi
s R
evie
w
35U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
Com
pens
ated
Trip
Mod
el
36U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
Unc
ompe
nsat
ed T
rip M
odel
37U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
SPN
D Im
bala
nce
by A
xial
Lev
el
38U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
Det
erm
inin
g Li
miti
ng F
ailu
re
Loca
tion
39U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
Lim
iting
Fai
lure
Loc
atio
n fo
r DN
BR
40U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
Lim
iting
Fai
lure
Loc
atio
n fo
r HLP
D
41U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
Lim
iting
Fai
lure
Loc
atio
n fo
r SP
ND
Imba
lanc
e
42U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
DN
BR
for a
Sym
met
ric E
vent
43U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
Sym
met
ric D
NB
R T
rip w
ith n
o SP
ND
Fai
lure
s
44U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
Sym
met
ric D
NB
R T
rip w
ith a
n U
ndet
ecte
d SP
ND
Fai
lure
45U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
Com
pens
ated
DN
BR
for I
FF E
vent
46U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
IFF
Trip
with
out S
PND
Fai
lure
s
47U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
IFF
Unc
ompe
nsat
ed T
rip M
odel
48U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
IFF
with
Und
etec
ted
SPN
D F
ailu
re
49U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
IFF
with
1 U
ndet
ecte
d +
1 D
etec
ted
SPN
D S
trin
g Fa
ilure
50U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
IFF
with
1 U
ndet
ecte
d +
2 D
etec
ted
SPN
D S
trin
g Fa
ilure
s
51U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
Tran
sien
t Ana
lysi
s Su
mm
ary
�A
sym
met
ric e
vent
s ar
e m
ore
sens
itive
to S
PND
fa
ilure
s th
an s
ymm
etric
eve
nts.
52U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
Stat
us U
pdat
e
�Th
e C
hapt
er 1
5 tr
ansi
ent a
naly
ses
have
bee
n re
view
ed to
det
erm
ine
whi
ch e
vent
s m
ust b
e re
-ev
alua
ted
with
an
unde
tect
ed S
PND
failu
re.
�M
ost s
ymm
etric
eve
nts
rem
ain
repr
esen
tativ
e.
•Th
e co
ntro
l rod
ban
k dr
op e
vent
is b
eing
re-e
valu
ated
. �
The
asym
met
ric e
vent
s ar
e be
ing
re-e
valu
ated
.
�Th
e tr
ansi
ent e
valu
atio
ns fo
r inc
ore
trip
with
an
unde
tect
ed S
PND
failu
re a
re p
repa
red
and
are
unde
r rev
iew
.
53U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3
Expe
cted
FSA
R C
hang
es
�Th
e ov
eral
l con
clus
ions
to th
e tr
ansi
ent a
naly
ses
in C
hapt
er 1
5 of
the
FSA
R a
re e
xpec
ted
to re
mai
n un
chan
ged.
�
Figu
re 1
5.1-
58 –
Incr
ease
in M
ain
Feed
wat
er F
low
–R
epre
sent
ativ
e Pl
ot o
f Nor
mal
ized
Min
imum
DN
BR
and
M
axim
um L
PD to
SA
FDL
will
be
upda
ted
�C
hang
es a
re n
eede
d to
dis
cuss
the
unde
tect
ed
SPN
D fa
ilure
and
upd
ate
the
setp
oint
s�
Tabl
e 4.
4-1
–D
NB
LC
O s
etpo
int
�C
hapt
er 1
5.0
(incl
udin
g Ta
ble
15.0
-7 –
Trip
Set
poin
ts)
�Se
ctio
n 7.
2.1.
2.1
and
7.2.
1.2.
2 –
Des
crib
e th
e in
core
trip
s
54U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3Sum
mar
y
�Th
is p
rese
ntat
ion
has
expl
aine
d th
e an
alys
is a
nd
met
hod
used
to c
alcu
late
the
stat
ic tr
ip s
etpo
ints
w
hile
acc
ount
ing
for t
he u
ndet
ecte
d si
ngle
failu
re
of a
n SP
ND
at t
he m
ost l
imiti
ng lo
catio
n.
�Th
is p
rese
ntat
ion
has
expl
aine
d ho
w th
e m
ost
limiti
ng lo
catio
n of
an
unde
tect
ed s
ingl
e fa
ilure
of
an S
PND
is d
eter
min
ed.
�Fi
nally
, thi
s pr
esen
tatio
n ha
s de
mon
stra
ted
the
impa
ct o
f the
und
etec
ted
SPN
D fa
ilure
on
the
DN
BR
und
ersh
oot a
naly
sis.
55U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3Nex
t Ste
ps
�A
dvan
ced
Res
pons
e to
RA
I 505
6/28
/201
3�
Res
pons
e to
Q07
.01-
33�
Upd
ates
to A
NP-
1028
7P
�A
udit
July
201
3�
Fina
l Res
pons
e to
RA
I 505
7/30
/201
3�
Res
pons
e to
Q07
.01-
33�
Upd
ates
to A
NP-
1028
7P
56U
pdat
e on
U.S
. EPR
FSA
R O
pen
Item
on
RA
I 505
Q 0
7.01
-33
–Si
ngle
Fai
lure
SPN
D–
5/30
/201
3Acr
onym
sC
OL
Com
bine
d Li
cens
eD
CR
Des
ign
Cha
nge
Req
uest
DN
BR
Dep
artu
re fr
omN
ucle
ate
Boi
ling
Rat
ioH
LPD
Hig
h Li
near
Pow
er D
ensi
tyIF
FIn
crea
se in
Fee
dwat
er F
low
ITA
AC
Insp
ectio
ns, T
ests
, Ana
lyse
s, a
nd
Acc
epta
nce
Crit
eria
PS
Pro
tect
ion
Sys
tem
RT
Rea
ctor
Trip
RT I
MB
Rea
ctor
Trip
forI
mba
lanc
e C
ondi
tion
RT R
DR
eact
or tr
ip fo
r Rod
Dro
p C
ondi
tion
SP
ND
Sel
f-Pow
ered
Neu
tron
Det
ecto
r