Indian Point Unit No. 2 Amendment Update to the Updated ...indian point unit no. 2 uncontrolled rcca withdrawal from a subcritical condition fuel average temperature vs time at hot

TOO

I I I / v I

I 90

I I - I

j I ::c l I-a:

f I Q !O :a

I 7 .... I <

I-Cl 70 I-

I I.I..

I 0

.... 60 z ...., u

I a: ..... A. 50 - I z: 0 -,_

'° a:: .....

I .,, z ->- 30 .... I -> -,_

20 u

I < ..... a::

10 /

0 I

-f/ I I I I I I I I

0 1 2 3 ' TI"E FRO" ROD RELEASE (SEC)

INDIAN POINT UNIT No. 2

UFSAR FIGURE 14.0-1

REACTIVITY INSERTION vs TIME FOR REACTOR TRIP

MIC. No. 1999MC3969 I REV. No. 17A

'--0 -1

~ 10 :::J

:z:

-2 10 ~-'-'--t-~--...----.._._...__..__.._.._.__i--"--.___~._._'-'-1

0 5 10 f5 20 25 30 Time (Seconds)


UNCONTROLLED RCCA WITHDRAWAL FROM A SUBCRITICAL CONDITION

NUCLEAR POWER vs TIME

UFSAR FIGURE 14.1-1 I REV. No. 19

.---.. 0 c .E 0

:z: --0

c 0

:.;::::; <..> E'

LL ...__, x :::s

LL ...... 0 (1)

::r::

.a

.7

6

.5

.4

,3

.2

.1

5

(\

10 15 20 25 30 Time (Seconds)


UNCONTROLLED RCCA WITHDRAWAL FROM A SUBCRITICAL CONDITION HEAT FLUX

vs TIME, AVG. CHANNEL


-·- uei Center l ine empe ature ----Fuel Ave age Tem pera t ure

2500 ......------------------.

Q) 1500 !..... :J ~

0 !.....

g_ 1000 E Q) f-

Q) 500 :J

LL

0 !

0

1' I \

r ; ;

\ \

\

' ' ' ' ' '

5 10 15 20 25 30 Time (Seconds)


UNCONTROLLED RCCA WITHDRAWAL FROM A SUBCRITICAL CONDITION FUEL AVERAGE

TEMPERATURE vs TIME AT HOT SPOT


750

""'O

..2 600 (._)

550 F-----__J

0 5 10 15 20 25 30 (Seconds)


UNCONTROLLED RCCA WITHDRAWAL FROM A SUBCRITICAL CONDITION CLAD INNER

TEMPERATURE vs TIME AT HOT SPOT


-0

0+-"---'--'--r--'--"'-'-r-'--'--....._.r----'---'--'--r-...__....__..--; 0 2 4 6 8 10

TIME (SECONDS)

1.2

---.. 0 1.1 c .E

1 0 :z: 0 .9

.8

.7

6

.5

4 0 2 8 10


UNCONTROLLED RCCA BANK WITHDRAWAL FROM FULL POWER WITH MINIMUM REACTIVITY FEEDBACK (70 pcm/sec WITHDRAWAL RATE).

NUCLEAR POWER ANO CORE HEAT FLUX vs TIME


2320 ~----------------..,

2300

L.i.J

5 2280 (/') (/') LlJ

g: 2260

a::: L.i.J

'.:::::! 2240 a::: ::::> (/') (/')

~ 2220 CL

2200-l-'--'--'--.---'--'---'--r---'--'--"--,--'---'--'--r-'--'--'"-I () 2 4 6 8 iO

TIME (SECONDS)

.---. 1170 Q5 ..£1: u 1165

:.0 :::i (_)

..__,. i160

.J155

1150

1145

1140 \ 1135

0 2 4 6 8 10

(SECONDS)


UNCONTROLLED RCCA BANK WITHDRAWAL FROM FULL POWER WITH MINIMUM REACTIVITY FEEDBACK (70 pcm/sec WITHDRAWAL RATE),

PRESSURIZER PRESSURE AND WATER VOLUME vs TIME


.--. 576......-------------------, w_

I v ID

g, 574 ~

572-1-----

4

3.5

3

··2.5

2

15

0 2 ' ' 4 6 8 10

T!ME (SECONDS)


UNCONTROLLED RCCA BANK WITHDRAWAL FROM FULL POWER WITH MINIMUM REACTIVITY

I FEEDBACK (70 pcm/sec WITHDRAWAL RATE). CORE WATER AVERAGE TEMPERATURE AND DNBR vs TIME

UFSAR FIGURE 14.1-7 REV. No. 19

i.2-.------------------

0 c:: .8

.Q u ~ .6 .___, 0:::: L.i..J

~ .4 Q..

~ .2-_J (.) :::> z O;----~,---~.-'-.._._r-'--'-'-,...-.'--J-.i-,-'--'-'-r-'-'-'-r-'-'-'-l

I) 20 60 80 100 120 140 160 TIME (SECONDS)

1.2

1.1 ..--.. 0 c: .E 1 0

z 0 .9 c::

.Q u .8 0 '-~

1--

iS .6

:r: 5

.4 0 20 40 120 140 160


UNCONTROLLED RCCA BANK WITHDRAWAL FROM FULL POWER WITH MINIMUM REACTIVITY FEEDBACK (1 pcm/sec WITHDRAWAL RATE),

NUCLEAR POWER AND CORE HEAT FLUX vs TIME


...-.... 0

-~ 2350 -w 0:: :::> (./') 2300 ~ 0:: 0....

ffi 2250 N 0:: :::> (./')

~ 2200 0:: 0....

2150 -1-0 ..l.-.:--'-r20....l-l.-'-r40-l-...l-'-,60r-'--'-'-80r-'-.l..-.J.-1,-00"'--'--'-1.-20...._._ ..... 1-r40-'-'---"-!160

w ::?: 3 1400

~ 0:: w !;;;: 1300 3:: 0:: w N

5 1200 (./') (,/) w 0:: 0....

TIME (SECONDS)

1100 ..j......L.-'--'-...,...-'-'--''"-r-'--'-r--'--'--"--r-'---'--T--'--'r-'--r-._,_.---'-'-1 0 20 40 50 80 100 120 140 160

TIME (SECONDS)


UNCONTROLLED RCCA BANK WITHDRAWAL f'ROM f'ULL POWER WITH MINIMUM REACTIVITY FEEDBACK (1 pcm/sec WITHDRAWAL RATE).

PRESSURIZER PRESSURE ANO WATER VOLUME vs TIME

UFSAR FIGURE 14. 1-9 I REV. No. 19

- 595 ..,.------------------. w_ I

&S g, 590 ~

a:::: CD z: Cl

3

2.5

2

1.5

20 40

0 20 40

60 80 100 120 140 160 TIME (SECONDS)

60 80 100 120 140 160 TIME (SECONDS)


UNCONTROLLED RCCA BANK WITHDRAWAL FROM FULL POWER WITH MINIMUM REACTIVITY FEEDBACK (1 pcm/sec WITHDRAWAL RATE).

CORE WATER AVERAGE TEMPERATURE AND DNBR vs TIME


-- Minimum Feedback - - - - Mox\mum Feedback

2.2 --------------------,

2

1.6

-1 10

I

/ I

, /

/

I:~ ~ - - '-.. "'HIGH NEUTRON OT.& T TRIP ...---'....__---+--FLUX TRIP

'

\ \\I

\ I II

'

0 I 2 10 10 10

Reactivity Addition Rate [pcm/second]


MINIMUM DNBR VERSUS REACTIVITY INSERTION RATE, ROD WITHDRAWAL

FROM 100 PERCENT POWER


-- Mir;;mum Feedback

- - - - Maximum F'eedbock

2.4 .----------------~

2.3

2.2

2.1

1.7

1.5

1-5

_, io

OfoTTRIP

j~ t .... I ', I I I

..._ I

' I 'I

HIGH NEUTRON FLUX TRIP

18 1d 1(~ Reactivity Addition Rate (pcm/second]

J 10





-- Minimum ;"eedbock - - - - Mcxirr\um Feedbock

2-4 -,-------------------..

2.3

2.2

2.1

= 2 = ~ -~ 1.9

c::: ::i§ 1.8

1.7

1.6

1.5

1.4

-· 10

OTL\TTRIP I J\ __

- '

HIGH NEUTRON FLUX TRIP

18 1d 16 16 Reactivity Addition Rate [pcm/second]





1.2-,------------------,

0-t-'----'-~~-.--"---"'~~-.---~----_._-.--~.___..~~

o ~ 100 1~ ~o Time (seconds)

0 .s

6

.4

.2

0


DROPPED ROD INCIDENT MANUAL ROD CONTROL NUCLEAR POWER AND CORE HEAT FLUX

AT BOL (SMALL NEGATIVE MTC) FOR DROPPED RCCA OF WORTH - 400 PCM


620 ~------------------.

500-+-"--'--'--'--,.--'---'---'--'-r-'"--'--'--'--.....---'-"'--'-~~

0 50 100 150 200

Time (seconds)

620 ....-------------------,

0 50 100 150 200


DROPPED ROD INCIDENT MANUAL ROD CONTROL CORE AVERAGE ANO VESSEL INLET TEMPERATURE

AT BOL (SMALL NEGATIVE MTC) FOR DROPPED RCCA OF WORTH - 400 PCM


Time (seconds)


DROPPED ROD INCIDENT MANUAL ROD CONTROL PRESSURIZER PRESSURE

AT BOL {SMALL NEGATIVE MTC) FOR DROPPED RCCA Of WORTH - 400 PCM

UFSAR FIGURE 14.1-16 REV. No. 19

1.2

~J 0

.6 w__ '--"

.4

I-

0 .2 <l> u :::> :z

0 0 50 100 150 200

1.2-.------------------,

0 .8

.6

.4

.2

0 0 50 100 200


DROPPED ROD INCIDENT MANUAL ROD CONTROL NUCLEAR POWER AND CORE HEAT FLUX

AT EOL (LARGE NEGATIVE MTC) fOR DROPPED RCCA Of WORTH - 400 PCM

UFSAR FIGURE 14.1-17 I REV. No. 19 I I

620

..--.. LL..

600

580

560

540

520

500

Time (seconds)


DROPPED ROD INCIDENT MANUAL ROD CONTROL CORE AVERAGE ANO VESSEL INLET TEMPERATURE

AT EOL (LARGE NEGATIVE MTC) FOR DROPPED RCCA OF WORTH - 400 PCM

UFSAR FIGURE 14. 1-18 REV. No. 19

2600 ~-----------------.,

~ 2400 t 2200

[> 2000 N >-::::l en U)

J: 1800

0 50 100 150 200 Time (seconds)


DROPPED ROD INCIDENT MANUAL ROD CONTROL PRESSURIZER PRESSURE

AT EOL (LARGE NEGATIVE MTC) FOR DROPPED RCCA OF WORTH - 400 PCM


.2

O-l--'--"--'--!-.J-.J.-'--+--'--'---'--+--'-......_.--t-_.__._..._._, 0 4 6 8 10

TIME (SECONDS)

1.2.....------------------,

~ :i .8 XO ::I :z: ~ .... .... o .6 ~z :x:g ~ .4

.2

0-1--_.i..-'--!-.J-.J.-'--+--'--'--+--'-""---'--t--'--'--"'-1 0 2 4 6 8 10

TIME (SECONDS)


LOSS OF ONE PUMP OUT OF FOUR NUCLEAR POWER AND CORE HEAT

FLUX vs TIME


311: 9

750

.... Su-zi.s -VI 700 w'-~i: 8 ....... ;I. b ..... 65()

600 0

1.2

311: 9

~i .8 ~:2 :zo :::>Z ;;Ji..

.6 go a.Z oe 98 .4 o~ !J--~ .2 ....

0 0

2

2

4 6 8 10

TIME (SECONDS)

4 6 8 10

TIME (SECONDS)


LOSS OF ONE PUMP OUT OF FOUR TOTAL CORE FLOW AND FAULTED

LOOP FLOW vs TIME

UFSAR FIGURE 14. 1 -21 REV. No. 19

2~-+--"'---'--'--+--'--'_._-+-_._..__..-+-_._......._'"-+_.._ ___ ~

5

3

2

0 2 4 6 10

2

TIME (SECONDS)

4 6

Tll.!E (SECONDS)

8


LOSS OF ONE PUMP OUT OF FOUR PRESSURIZER PRESSURE AND

DNBR vs TIME


1.2.....-----------------,

04--'--'--+--"--'-'--f--'--'--+_.__.__'-t"_.__._......, 0 4 6 8 10

TIME (SECONDS)

1.2~----------------,

.2

04--'--"--+--'--'--+--'--'--l--'--'-'-+_._-'-"'-i 0 2 4 6 8 10

TIME (SECONDS}


FOUR PUMP LOSS OF FLOW -UNDERVOLTAGE NUCLEAR POWER AND

CORE HEAT FLUX vs TIME


800

700 ~

~ !3u- 600 zu.i -en u.i';;)-o::t: g.._, 500

~ g 400

300 0 4 6 8 10

TIME (SECONDS)

1.2

~ 9,..,. "-~

.8 23 0::0 tiz ::EL>. 3o .6 §?5 n.-gti .4 .:IE ~---

.2

0 ll 2 4 & 8 10

TIME (SECONDS)


FOUR PUMP LOSS OF FLOW -UNDERVOLTAGE TOTAL CORE FLOW AND

RCS LOOP FLOW VS TIME


0 2

TIME (SECONDS)

4 6

TIME (SECONDS)

INDIAN

B 10

POINT UNIT No. 2

FOUR PUMP LOSS OF FLOW -UNDERVOLTAGE PRESSURIZER PRESSURE

AND DNBR vs TIME


1.2---------------------.

TIME (SECONDS)

.2

0-1--'--'--+-_.__._...._+-'--'--'--t--'--..__'--t_._~-"--f

0 2 4 6 8 10

TIME (SECONDS)


FOUR PUMP LOSS OF FLOW -UNDERFREQUENCY NUCLEAR POWER AND

HEAT FLUX vs TIME


800

700

): g 600 r...

5'6' 500 z:ll.I -~ It!~ 400 8---~ e 300

200

100 0 2 4 8 10

TIME (SECONDS)

1.2

): g,..... r...~

.8 (.)_

~~ :::lz:

3:5 .6 ~~

§~ .4

~,!!:, .2

I)

0 2 4 6 8 10

TIME (SECONDS)


FOUR PUMP LOSS OF FLOW -UNOERFREQUENCY TOTAL CORE FLOW ANO

RCS LOOP FLOW vs TIME


2~+-'--'--'--f-....___._._-+-_,_._..-+-_.__._"'--t-~----'--1

0 2

3

2

0 2

4 6

TIME (SECONDS)

4 6

TIME (SECONDS)

8 10

B


FOUR PUMP LOSS OF FLOW -UNDERFREOUENCY PRESSURIZER PRESSURE

AND DNBR vs TIME


u

t

j ca ~-

1=-i I&.

~a 1).6

i.)~ in IM ~

la. -G.2

0 0 • 4 • ,, ... (Stt::ONDS)

1100 -2500

w IE

-~JG u 2JOO I . -21i00 -0 4 • I 18

"nYE: (SEC'ONDS)


LOCKED ROTOR NUCLEAR POWER AND RCS PRESSURE vs TIME

UFSAR FIGURE 14. 1 -29 I REV. No. 22

• 5 11WE: {S!CtlNtlS)

-M+-'----"--'---+---'---'--'---+~~~-+----~~--~~----i

a 4 ti Tl WE: (SE:COMD$:)

Hl


LOCKED ROTOR TOTAL CORE FLOW AND FAULTED LOOP FLOW vs TIME


•+--'-l-'-_._-'-~L-..1--'--'--'--+-_.__,__,_-+--'--'--""--i

0 f 6 llM£ (SECO~OS}

'O


LOCKED ROTOR FUEL CLAD INNER TEMPERATURE vs TIME

UFSAR FIGURE 14.1-30A I REV. No. 22

,--..., 1.2------------------, 0 c:

-~ 1-4----~ z:

w s 2300 (./) (./) w g::: 2200

a::: w

20 40 60 TIME (SECONDS)

80 100

~ 2100

~ I (/) (./)

~ 2000

CL 1900 -l-~--'-......J.--'--r-1 -"--'---'--r-1 __...__.___....__,--, =====~.======-i 0 20 40 60 80 100

TIME (SECONDS)


LOSS OF LOAD WITH PRESSURIZER SPRAY AND PORV, NUCLEAR POWER

AND PRESSURIZER PRESSURE vs TIME

UFSAR FIGURE 14.1-31 j REV. No. 19

I

20 40 60 80 100

TIME (SECONDS)

1700-.------------------, ---0 ·u; -..S 1600 w ::::;;:

~ 1500 §; a::: ~ 1400

~ ES 1300 N a:::

~ {

~ :::+t-'---'--L--~-'--'-~·-'--'--'--~,_._....._~~, _.__~-=--=--~I 0 2b 40 60 80 100

TIME (SECONDS)


LOSS OF LOAD WITH PRESSURIZER SPRAY AND PORV, AVERAGE COOLANT TEMPERATURE

AND PRESSURIZER WATER VOLUME vs TIME


3.5

3

a::: §@ 2.5 a

2

1.5

1+-""---"-"--,--'---'-'-r-'--'--'---r-"--'-_._-r-_._...__'-1 0 20 40 60 80 100

TIME (SECONDS)


LOSS OF LOAD WITH PRESSURIZER SPRAY AND POWER OPERATED RELIEF VALVES

DNBR vs TIME


·~ TIME

-- Iii'!' L{)lller Pl~rrnm Prti$~ tH® ----- Prtthirlz•r Pr1<U1!Jre

:oo


LOSS OF LOAD WITHOUT PRESSURIZER SPRAY AND PORV, NUCLEAR POWER AND PRESSURIZER PRESSURE vs TIME


:l{f .w, lifJ ~00

TI ME l~

i~

1;ror1

0:::: L.&.J

~ !ZOO ·~

t ~00

!C(t:i

goo (I 20 4lll 31) 100

llME f!!;\E \""'


LOSS OF LOAD WITHOUT PRESSURIZER SPRAY AND POWER OPERATED RELIEF VALVES, AVERAGE COOLANT

TEMPERATURE AND PRESSURIZER WATER VOLUME vs TIME


40· 60 TJ~ff (SECONDS)


LOSS OF LOAD WITHOUT PRESSURIZER SPRAY AND POWER OPERATED RELIEF VALVES,

STEAM PRESSURE, vs TIME

UFSAR FIGURE 14.1 -39 I REV. No. 22

0 10

1 10

2 10

Ti me (seconds)

3 10

4 10

1800 -------------------,

_.-.._

C)

~ 17DD u

:.0 ::::>

s 1600 Cl>

E ::::>

g 1500 \ rv \ .~ 1400 {

~ 1300 {

o_ "'---------

0 10

\ iO

2 10

3 10

4 10


LOSS OF NORMAL FEEDWATER, OFFSITE POWER AVAILABLE, HIGH T avg PROGRAM,

PRESSURIZER PRESSURE AND PRESSURIZER WATER VOLUME vs TIME

UFSAR FIGURE 14.1-43, sht.1 REV. No. 19

1.2 -...---------------------i

u_ '--'

'--(!) :;:: 0

o_

.6 -

-4 -J

0 10

1 10

2 10

Time (seconds)

3 10 • 10

1.2----------------.--..

Cl .s: 1 E 0

:z: 0 .a

.4 ..,_, Cl

:1 (!)

::r: <l.> ..._ 0

(..)

0 10

I 1

10

\ ~

I 2

iO

( ' \ seconas;

I :l

10 • 10


LOSS OF NORMAL FEEDWATER, OFFSITE POWER AVAILABLE, HIGH Tavg PROGRAM,

NUCLEAR POWER AND CORE HEAT FLUX vs TIME


-- HO LEG ----CO 0 LEG

SA RATION

700 ...,----------------------.

N

g- 540 .3

0 10

- - - - - - - - - - - - .,.,,

I 10

-- HO LEG ----CO 0 LEG

SA URATION

/ ,,

2 10

Time (seconds)

3 1() • 10

700 ....--------------------.

0 ;o

I 10

2 10

(seconds)

l 10 • 10



LOOP 21 AND LOOP 23 TEMPERATURE vs TIME

UFSAR FIGURE 14.1-43, sht.3IREV. No. 19

1200

c;-1100 • (/j CL ----

1000

E 900

0 <I.)

u:; 800

C'.J

0.. 0 0 700 -'

600 0

10 t

10 z

10

Time (seconds)

J 10

4 10

1200~-----------------.

~ 1000 -::::> (.() (.() (JJ '-

CL 900 E 0 (JJ

u:; ,.,., 800 C'J

~ I ..::: 700 !--------./

6oo+r--"-'--'--'-'-·~, ·~1--"--"-~lj~lj~'i~l_._~'"--'-........ 1 ~~~·--;'' 0 I 2 l 4

10 10 10 10 10

Time (seconds)



STEAM GENERATOR 21 AND STEAM GENERATOR 23 PRESSURE vs TIME


.....--. 0

:.;:; ·c: 0

3: 0

c;: if) (..) a::: 0 _...., 0

;..-

J.2

1

.8

.6

.4

.2

0 0

10 1

10 2

10

Time (seconds)

l- I

3 10

4 10

~ .I Q-\---l-.-l-.-'-'-W-,---'--~..u..w_,--,-'--'--'--'-~~ ............ -'-'-'-'-'-1 l

10 2

lO

Time (seconds)

J 10

4 10


LOSS OF NORMAL FEEDWATER, OFFSITE POWER AVAILABLE, HIGH Tavg PROGRAM ,TOTAL RCS FLOW AND

PRESSURIZER RELIEF vs TIME

UFSAR FIGURE 14.1-43, sht.5 I REV. No. 19

1.2 ...----------------------,

-::::;-

;i .8 .... 00 a. :z

g~ .6 ....

00

~~ .4 ... .._.

.2 ....

0 I . 0 50 100 150 200

TIME (SECONDS)

1.2

.8 I-

.6

.4-

.2 -

o.r........_....._......_'--1....._--'-_._-'--+-_.::::::::i=::::::==l===-----........i o 100 1so 2m

TIME (SECONDS)


FEEOWATER SYSTEM MALf'UNCTION EXCESSIVE FEEOWATER FLOW - HFP CONDITIONS MANUAL ROD CONTROL NUCLEAR POWER ANO CORE HEAT FLUX vs TIME


1600-l--'--"'--'--l--l--J..-l--'---'---l--'--'--'---'-+1 -'------'--"--1 0 so 100 1So 200

TIME (SECONDS)

4 ....

0:: m 3 i-z 0

2 I-

I

fl s'o 100 150 200

TIME (SECONDS)


FEEDWATER SYSTEM MALFUNCTION EXCESSIVE FEEDWATER FLOW - HFP CONDITIONS MANUAL ROD CONTROL

PRESSURIZER PRESSURE AND DNBR vs TIME

UFSAR FIGURE 14.1-45, sht.2 j REV. No. 19

80

-60 - -

7-;:;:-Ji! " ~f 40 g.l _s .......

20

0 ' ' ' ~ 0 sQ 100 150 200

TIME (SECONDS}

580

1 f .i! 570 -E!

~ ~i 560 -°'i' E!o :--< f 550 -8

540 0 50 100 150 200

TIME (SECONDS)


FEEOWATER SYSTEM MALFUNCTION EXCESSIVE FEEOWATER FLOW - HFP CONDITIONS MANUAL ROD CONTROL

LOOP DELTA -T, ANO CORE Tavg vs TIME


2360 ~

I~ r0 f 2340 i

r

]: 2320 { JI '---' I 2300 I 2280

I a-s ·2! 2260 ::I Cf) Cf)

2: 2240 CL

2220

2200 0 \ 2 l •

10 10 10 10 10

Time (seconds)

1800 ....------------------.,

f \

I \

~1500 ~ \ 0 /

3:: 1400 ~

-~ 1300 I I J: b-t _____ _/

1200 +r ___;.-.!..-.l.....'-'.,.;_u' 1T""j ----"---'--'~'~' 1 ,., ~~~! I--,,-~~~' I 4' C

0 1 2 J • 10 10 10 10 10

...-• I , \

11me l seconds j


LOSS OF ALL AC POWER, HIGH Tavg PROGRAM, PRESSURIZER PRESSURE AND PRESSURIZER WATER VOLUME vs TIME


':l I 1 0 ·1

'{ Q5

I I "" .4 0

Q_ l

'-

.2 J I 0 Q)

I u

[~ ::::>

0 t :z::

' 1 • ! I ' I

I ' I I t

I r It li l 0 1 2 J •

10 10 iO 10 10

Time (seconds)

1.2 '

-:::::-. ~ 0 c 1 .E 0

:z 0 .a c

.Q 0 0 .6 '-

Lt-...__. x ::::> ~ A 0

(l)

::r: Q) .2 -0

(_)

0 r r

0 '1 l J 4

10 10 10 10 10

(seconds)


LOSS OF ALL AC POWER, HIGH Tavg PROGRAM, NUCLEAR POWER AND

CORE HEAT FLUX VS TIME


,.....__ u...

-- HOT LEG ----COLD LEG

SA URATION

~ 660 ---- -- -- - -- --- ----- - - - -------- --•• _,------------ ----, _____ ,--<l.>

.::;::::,

620

580

N 1- /'-----------g-s40 - __ ,/ 0 ------------

_J 500 I I ll I ' !\ '1 j I I "'•

0 l 2 J 10 10 10 10

Time (seconds)

-- HOT EG ----COLD LEG

SATURATION

,.....__ u... ~ 660 - -- - -- - ---- - ------ -- ____ ......... --4"- .. ,~_, .... -_ ... ----- .. __ .,.---,\. ___ ... ,,.,,-(1)

.::;::::,

620 {

580}1-----~~ f- .... ' ,,-, j_ I ' !54-0L ___ m ______ ,,,

5001 I 11 1 I

G I 2 10 10 10

r ' '. ilme l seconds;

. " I 4

1()

I

" I 4

10


LOSS OF ALL AC POWER TO THE STATION AUXILARIES, HIGH Tavg

PROGRAM, LOOP 21 AND LOOP 23 TEMPERATURE vs TIME


1200

" c;-1100 . u:;

Cl.. '-._./

1000

I

E 900 0 Q) __,

(// - 800 C'-l

Cl.. 0 0 700 ......J

600 0 l 2 3 •

10 10 10 10 10

Time (seconds)

1200

('\

0 1100

I ·us Cl..

"'---'

2 1000 :::l en

"' ~ 900{ w } (/)

"" 800

I C'-l

Cl.. 0

I 0 700 _l

600 ' ' ,. I '1 '

0 2 J <!

10 10 10 10 10 r ( d \ ;1me ,secon s;


LOSS OF ALL AC POWER TO THE STATION AUXILARIES, HIGH Tavg

PROGRAM, LOOP 21 AND LOOP 23 STEAM PRESSURE vs TIME


1.2------------------,

--0 c:: .a

.Q u 0

6 .6

3:: 0

lJ... (/) .4 u a::: 0 0 .2 f--

0-+--'-..__._'-'-'-'-'....-_.._~ ........... ..--~~...........,-~~---, 0

10

0 10

1 10

I 10

2 10

Time (seconds)

2 10

Time (seconds)

3 10

J 10

~ 10

4 10


LOSS OF ALL AC POWER TO THE STATION AUXILARIES, INTERMEDIATE Tavg

PROGRAM, TOTAL RCS FLOW AND PRESSURIZER RELIEF RATE vs TIME

UFSAR FIGURE 14.1-50, sht.SIREV. No. 19

16

15

14

13

12 Vl 11 L;J 0:: ::> 10 ..J

< 9 ..... 8

L;J 7 (l.

>-I- 6 > Vl 5 LL.

4 0

ci 3 :z L;J 2 > 1 j:::

:5 0 ::> :IE 86 87 ::::> 88 89 90 91 u 92 93 94 95 96 97 98 99

CALENDAR YEAR

ANALYSIS FAILURE LINE • ACTUAL DATA

SV TYPE 1 FAILURE RATE

SLOPE OF ANALYSIS FAILURE LINE = 2.47-06/HR

= [(SY TYPE 1 F.R.) * (OPERATING HOURS)) / (CALENDAR YEARS)

= [(2.47E-06/HR) * (2.917E+06 HRS)) / (6.42 CAL. YRS.) = 1.1 FAIL/CAL YR.


UFSAR FIGURE 14.1-62

TRACKING 8-95/96 STOP VALVE (SV) TYPE 1 FAILURES

STOP VALVE DISC FAILS

MIC. No. 2001MB1537 REV. No. 17 A

w tl.. >-1-

> If)

5

4 -

3 -

~ t-~~·==:::t:::=:C::1:::L1:::=~1:::::::=l~:;:l::=:=l===l===~l=:l~:l~~~I~ 86 87 88 89 90 91 92 93 94 95 96 97 98 99

CALENDAR YEAR

-- ANALYSIS FAILURE LINE • ACTUAL OAT A

SV TYPE 2 FAILURE RATE

SLOPE OF ANALYSIS FAILURE LINE

= 2.05-07 /HR

= ((SY TYPE 2 F.R.) * (OPERATING HOURS)] / (CALENDAR YEARS)

= [(2.05E-07 /HR} * (2.917E+06 HRS)) / (6.42 CAL. YRS.) = 0.093 FAIL./CAL. YR.



TRACKING B-95/96 STOP VALVE (SV) TYPE 2 FAILURES

STOP VALVE SPRING FAILS

MIC. No. 2001MB1538 !REV. No. 17A

> V'l

5

: ~~.d'=::::t::::=L1==}1=====1~1==~,====1~=,~=~1=:1~~~,:·:,~J 86 87 88 89 90 91 92 93 94 95 96 97 98 99

CALENDAR YEAR

ANALYSIS FAILURE LINE • ACTUAL OAT A

SY TYPE 3 FAILURE RATE


= 2.05-07 /HR

= ((SV TYPE 3 F.R.) " (OPERATING HOURS)] / (CALENDAR YEARS)

= [(2.0SE-07 /HR) * (2.917E+06 HRS)) / (6.42 CAL. YRS.) = 0.093 FAIL/CAL. YR.



TRACKING B-95/96 STOP VALVE (SV) TYPE 3 FAILURES

STOP VALVE STICKS OPEN

MIC. No. 2001MB1539 !REV. No. 17A

Vl 11 w a:: ::i 10 ...J

< 9 i....

"Of- 8 WJ

7 a.. >-.... 6 > u 5 i....

4 0

0 3 z w 2 ?:: 1 .... j

0 ::i ::E 86 87 88 89 90 91 92 93 94 95 96 97 98 99 ::::> u

CALENDAR YEAR

ANALYSIS FAILURE LINE • ACTUAL OAT A

CV TYPE 4 FAILURE RATE


= 1.22-06/HR

= [(CV TYPE 4 F.R.) * (OPERATING HOURS)) / (CALENDAR YEARS)

= [(1.22E-06/HR) • (3.925E+06 HRS)] / (6.42 CAL. YRS.) = 0.75 FAIL/CAL. YR.


UFSAR FIGURE 14. 1 -65

TRACKING B-95/96 CONTROL VALVE (CV) TYPE 4 FAILURES

CONTROL VALVE SPRING BOLT FAILS

MIC. No. 2001MB1540 REV. No. 17A

> u

5

4 .....

3 -

~ 2 -0 z

0

•

I I I I I I I I I I I I

86 87 88 89 90 91 92 93 94 95 96 97 98 99

CALENDAR YEAR

ANALYSIS FAILURE LINE • ACTUAL DATA

CV TYPE 5 F'AILURF.: RAT£ = 1.53-07 /HR SLOPE OF ANALYSIS FAILURE LINE = [(CV TYPE 5 F'.R.) • (OPERATING HOURS)) / (CALENDAR YEARS)

= [(1.53E-07 /HR) * (3.92SE+06 HRS)] / (6.42 CAL. YRS.) = 0.094 FAIL./CAL. YR.



TRACKING B-95/96 CONTROL VALVE (CV) TYPE 5 FAILURES

CONTROL VALVE STICKS OPEN

MIC. No. 2001MB1541 I REV. No. 17A

ProbabHily of Destructive

Overspeed (y....-')

Initial Case

1E

._..~..___..___, WHEN JUSTIRED USING THE APPROPRIATE '--i,.,--........... -i CURVE, NOMINAL TEST INTERVALS UP TO

3 MONTHS ARE RECOMMENDED.

Turt>Jn• Valve Test lnt.rval (months)

--- -

Curve 11: SlUVeillaoce o4 stop valve discs occurs every 18 months. Testing o4 valve freedom of movement oocurs at inteJVals of 1 to 6 months (horizonlal axis).

Cul'V9 12: Surveillance of stop valve discs occurs evfJfY 24 months. Tt.sting of valve freedom of movement occtn at intervals of 1 to 6 months (horizontal axis).

• Estimated 3.7E-06/r for 3 month test interval for Curve #2



ANNUAL FREQUENCY OF DESTRUCTIVE OVERSPEED FOR VARIOUS BB-95/96 TURBINE VALVE TEST INTERVAL

(1-0N-1 SV-CV TURBINE / 1 OUT OF 4 STEAM PATHS)

MIC. No. 2001MB1542 REV. No. 17A

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