ML062050014

Attachment 1 to TXX-0612 Response to Requests for Additional Information for the Replacement Steam Generator Supplement to Txu Power'S Large and Small Break Loss of Coolant Accident Analysis Methodologies, Pages 125 Through 168

ML062050014
Person / Time
Site:	Comanche Peak
Issue date:	07/17/2006
From:	TXU Power
To:	Office of Nuclear Reactor Regulation
References
CPSES-200601350, TAC MC6899, TXX-06125
Download: ML062050014 (44)

Text

Attachment I to TXX-06125 Page 125 of 216 CPSES-1 SBLOCA D76 RSG Analysis 1.5-Inch Break - Severed ECCS Injection Line 0.50 0.45 0.40 0.35

.2 0.30 0.25

< 0.20 0.15 0.10 0.05 0.00 0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 Time (sec)

Figure F-2 Hot Assembly Region Void Fractions - 1.5-in Break (Severed ECCS Line)

C-;-'

Attachment Ito TXX-06125 Page 126 of 216 CPSES-1 SBLOCA D76 RSG Analysis 1.5-Inch Break - Severed ECCS Injection Line 0.50 0.45 0.40 0.35

=0 0.30 0.25 I 0.20 0.15 0.10 0.05 0.00 0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 Time (sec)

Figure F-3 Central Core Region Void Fractions - 1.5-in Break (Severed ECCS Line) cS~

to TXX-06125 Page 127 of 216 CPSES-1 SBLOCA D76 RSG Analysis 1.5-Inch Break - Severed ECCS Injection Line 0.50

-.-- VOIDG 160010000 I

0.45 a VOIDG 155010000 VOIDG 150010000 0.40 0.35 i-0 0.30 L. 0.25

'51 a L C. 0.20 0.15 i-----

0.10 ............ i.

0.05 - ----- - ------

a i

U.UU  ! b 0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 Time (sec)

Figure F-4 Average Core Region Void Fractions - 1.5-in Break (Severed ECCS Line) to TXX-06125 Page 128 of 216 CPSES-1 SBLOCA D76 RSG Analysis 1.5-Inch Break - Severed ECCS Injection Line 1.2 1.0

.O 0.8 U

14.

0 0.6 CL 0.4 0.2 0.0 0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 Time (sec)

Figure F-5 Upper Plenum Liquid Fraction - 1.5-in Break (Severed ECCS Line)

CCGO to TXX-06125 Page 129 of 216 CPSES-1 SBLOCA D76 RSG Analysis 1.5-Inch Break - Severed ECCS Injection Line 14.0 12.0 10.0

-J 8.0

0. 6.0 4.0 2.0 0.0 0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 Time (sec)

Figure F-6 Hot Assembly Collapsed Water Level - 1.5-in Break (Severed ECCS Line) to TXX-06125 Page 130 of 216 CPSES-1 SBLOCA D76 RSG Analysis 1.5-Inch Break - Severed ECCS Injection Line 700.0 650.0 U.

9. 600.0 E 550.0 I-500.0 450.0 400.0 0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 Time (sec)

Figure F-7 Hot Assembly Clad Temperatures - 1.5-in Break (Severed ECCS Line) r- J-to TXX-06125 Page 131 of 216 CPSES-1 SBLOCA D76 RSG Analysis 1.5-Inch Break - Severed ECCS Injection Line 0.7 0.6

-.- VOIDG 460030000

• VOIDG 461030000 0.5 C VOIDG 462030000 0

• VOIDG 463030000 o

w 0.3 CL CO 0.

0

-J 0.2 0.1 L

0.0 mpim.mmI~minA 0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 Time (sec)

Figure F-8 Loop Seal Void Fractions - 1.5-in Break (Severed ECCS Line)

Attachment I to TXX-06125 Page 132 of 216 CPSES-1 SBLOCA D76 RSG Analysis 1.5-Inch Break - Severed ECCS Injection Line 1.0 0.9-1 .. MFLOWJ 735000000

• MFLOWJ 736000000 0.8 MFLOWJ 737000000 4-

'A MFLOWJ 738000000 E 0.7 o 0.6 M.

U-U)

M 0.5 I..,

0 M0.4 E

U* 0.3 0.2 0.1 0.0 0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 Time (sec)

Figure F-9 Accumulator Mass Flow Rates - 1.5-in Break (Severed ECCS Line) to TXX-06125 Page 133 of 216 CPSES-1 SBLOCA D76 RSG Analysis 1.5-Inch Break - Severed ECCS Injection Line 300.0 250.0 200.0 E

0 150.0 M-1n 100.0 50.0 0.0 0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 Time (sec)

Figure F-10 Break Flow Rate - 1.5-in Break (Severed ECCS Line) to TXX-06125 Page 134 of 216 CPSES-1 SBLOCA D76 RSG Analysis 1.5-Inch Break - Severed ECCS Injection Line 100.0 90.0 80.0 70.0 E

60.0

.0 0 50.0 40.0 0

30.0 20.0 10.0 0.0 0 500 1000 1500 2000 2500 3000 3500 4000 4 500 5000 Time (sec)

Figure F-11 Total Pumped ECCS Flow Rate - 1.5-in Break (Severed ECCS Line)

Attachment Ito TXX-06125 Page 135 of 216 CPSES-1 SBLOCA D76 RSG Analysis 1.5-Inch Break - Severed ECCS Injection Line 1200 1 L PCT Node (10.125 ft)

No Rupture Predicted C.,

.E-600.-

400 0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 Time (sec)

Figure F-12 TOODEE2 Clad Temperature - 1.5-in Break (Severed ECCS Line) to TXX-06125 Page 136 of 216 CPSES-1 SBLOCA D76 RSG Analysis 1.5-Inch Break - Severed ECCS Injection Line 14.0 12.0 - I -~IH III -I --- m 10.0 8.0 a)

T

_ _ _ L _ _

6.0 0)

U~

_ I _I 4.0 2.0 0.0 0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 Time (sec)

Figure F-13 Core Mixture Level - 1.5-in Break (Severed ECCS Line) to TXX-06125 Page 137 of 216 CPSES-1 SBLOCA D76 RSG Analysis 1.5-Inch Break - Severed EGOS Injection Line 30.0 25.0

> 20.0 - I w ~- *- I- I- EEEhhEE~EE I - I-

-J 15.0 I

0 L,..

E 0

) 10.0 __ __ __ __ __ __ __ __ __ __

0 0

5.0 0.0 0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 Time (sec)

Figure F-14 Downcomer Liquid Level - 1.5-in Break (Severed ECCS Line) to TXX-06125 Page 138 of 216 CPSES-1 SBLOCA D76 RSG Analysis 1.5-Inch Break - Severed ECCS Injection Line 700.0-

-.- TEMPG 122010000

- TEMPG 123010000 650.0 TEMPG 124010000 x TEMPG 125010000 5600.0 _ ...........

4) 4 50.0 - ---- -- - 7 400.00 50 10 150 20 250 30 350 40 450 00 0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 Time (sec)

Figure F-15 Hot Assembly Steam Temperatures - 1.5-in Break (Severed ECCS Line)

Attachment Ito TXX-06125 Page 139 of 216 CPSES-1 SBLOCA D76 RSG Analysis 1.5-Inch Break - Severed ECCS Injection Line 4.0 3.5 i - HTHTC 1291011 u HTHTC 1291012 it-LA.

01 i x HTHTC 1291013

,' 3.0  ! E xHTHTC 1291014 2.5 0 2.0 It- --------

U) r- 1.5 I1-aQ 1.0 t

0.5 4 0.0 0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 Time (sec)

Figure F-16 Hot Assembly Heat Transfer Coefficients - 1.5-in Break (Severed ECCS Line)

C-0 to TXX-06125 Page 140 of 216 CPSES-1 SBLOCA D76 RSG Analysis 1.5-Inch Break - Severed ECCS Injection Line 0.00 k-7WO.

I, x

' -0.05 I. ..........

.. x ....

E x

. 0 . S S

4 1x Q -0.10 I._ 6

(U -0.15 C..

'-0.20 4

a 0 S B'

U --VAPGEN 490010000

-0.25 4- £VAPGEN 491010000 (U

VAPGEN 492010000 xVAPGEN 493010000 o -0.30 I-Q

-0.35 0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 Time (sec)

Figure F-17 Condensation Rate in Cold Leg Discharge - 1.5-in Break (Severed ECCS Line) 0cu 9

Attachment Ito TXX-06125 Page 141 of 216 CPSES-1 SBLOCA D76 RSG Analysis 1.5-Inch Break - Severed ECCS Injection Line 1.0 0.9 0.8 0.7

.0~ 0.6 C 0.5 L.

0.4 0.3 0.2 0.1 0.0 0 500 1C00 1500 2000 2500 3000 3500 400 0 4500 5000 Time (sec)

Figure F-18 Break Quality- 1.5-in Break (Severed ECCS Line) to TXX-06125 Page 142 of 216 CPSES-1 SBLOCA D76 RSG Analysis 6-Inch Break - Severed ECCS Injection Line 2500.0 P 174010000 m P 570010000

. 2 0 0 0 .0 -------.

- 01 0000 P 5 71-- ..... . .. . . . ..

0. x P 572010000 0 xP 573010000 2

CL 1500.0o --

o.

0 0 1000.0.---

'U E

CL 500.0- - -----------...----------- -------

0.0 0 100 200 300 400 500 600 Time (sec)

Figure G-1 Primary and Secondary System Pressures in Break (Severed ECCS Line)

Attachment I to TXX-06125 Page 143 of 216 CPSES-1 SBLOCA D76 RSG Analysis 6-Inch Break - Severed ECCS Injection Line 1.2

-'--VOIDG 122010000

• VOIDG 117010000 VOIDG 112010000 1.0 a

l!

0.8 a

0 i

..V,* i

0. 4 0.2 0.4 at- 0 0

0.2 a

0.0 0 100 200 300 400 500 600 Time (sec)

Figure G-2 Hot Assembly Region Void Fractions in Break (Severed ECCS Line)

Attachment Ito TXX-06125 Page 144 of 216 CPSES-1 SBLOCA D76 RSG Analysis 6-Inch Break - Severed ECCS Injection Line 1.2

-.- VOIDG 140010000

• VOIDG 135010000 VOIDG 130010000 1.0 0

a S 0.8 aý0- -

V 0

a 9 Li 0.6 U',

C.,) IL

IV 0.4 i

0.2 0.0 0 100 200 300 400 500 600 Time (sec)

Figure G-3 Central Core Region Void Fractions in Break (Severed ECCS Line)

C-cc to TXX-06125 Page 145 of 216 CPSES-1 SBLOCA D76 RSG Analysis 6-Inch Break - Severed ECCS Injection Line 1.2

-*-VOIDG 160010000

• VOIDG 155010000 VOIDG 150010000 1.0 a

a 0.8 C

.o Is 0 ---

-3.*

0.

U-

~0.6 U.

0.4 i,,I n

A 0.2 0.0 --

0 100 200 300 400 500 600 Time (sec)

Figure G-4 Average Core Region Void Fractions in Break (Severed ECCS Line)

C-7 to TXX-06125 Page 146 of 216 CPSES-1 SBLOCA D76 RSG Analysis 6-Inch Break - Severed ECCS Injection Line 1.2 1.0

.2 0.8 U-.

o 0.6 M. 0.4 0.2 0.0 0 100 200 300 400 500 600 Time (sec)

Figure G-5 Upper Plenum Liquid Fraction in Break (Severed ECCS Line) cT

Attachment I to TXX-06125 Page 147 of 216 CPSES-1 SBLOCA D76 RSG Analysis 6-Inch Break - Severed ECCS Injection Line 14.0 12.0 10.0 a, 8.0

-J a,

U, 0.

a, 6.0 0

I 4.0 2.0 0.0 0 100 200 300 400 500 600 Time (sec)

Figure G-6 Hot Assembly Collapsed Water Level in Break (Severed ECCS Line)

Attachment I to TXX-06125 Page 148 of 216 CPSES-1 SBLOCA D76 RSG Analysis 6-Inch Break - Severed ECCS Injection Line 1800.0 HTTEMP 129101108 1 HTTEMP 129101208 HTTEMP 129101308 HTTEMP 129101408 a"a 1400.0 -- - -

U.U 1200.0 --

00 I- x 1000.0 - -- -x 800.0---- - ----~ ' -- --- -----

600.0 --

400.0 -________________

0 100 200 300 400 500 600 Time (sec)

Figure G-7 Hot Assembly Clad Temperatures in Break (Severed ECCS Line) to TXX-06125 Page 149 of 216 CPSES-1 SBLOCA D76 RSG Analysis 6-Inch Break - Severed ECCS Injection Line 1.2 1.0

.2 0.8 U

0 0.6 0

• 0 Co o 0.4

-J 0.2 0.0 0 100 200 300 400 500 600 Time (sec)

Figure G-8 Loop Seal Void Fractions in Break (Severed ECCS Line)

Cl$'3

Attachment I to TXX-06125 Page 150 of 216 CPSES-1 SBLOCA D76 RSG Analysis 6-Inch Break - Severed ECCS Injection Line 450.0 4 0 0 .0 o-.. . ... --------

-- MFLOWJ 735000000 350.0 . MFLOW J 736000000 --------------------

MFLOWJ 737000000 A x MFLOWJ 738000000 A A 300.0 . ......-...

0 2500----------

200.0 - - ... .

0 E 150.0 ----

100.0 - - - ---- ~-----------

50.0 -- __ -- - - -

0 100 200 300 400 500 600 Time (sec)

Figure G-9 Accumulator Mass Flow Rates in Break (Severed ECCS Line)

Attachment I to TXX-06125 Page 151 of 216 CPSES-1 SBLOCA D76 RSG Analysis 6-Inch Break - Severed ECCS Injection Line 4500.0 4000.0 3500.0 3000.0 E

2500.0 0

U-CO 2000.0 I _ __ __

1500.0 1000.0 500.0 0.0 0 1V 00 200 300 400 500 600 Time (sec)

Figure G-10 Break Flow Rate in Break (Severed ECCS Line) to TXX-06125 Page 152 of 216 CPSES-1 SBLOCA D76 RSG Analysis 6-Inch Break - Severed ECCS Injection Line 100.0 90.0 80.0 70.0 E

60.0 0

50.0 U,

40.0 0

30.0

_ __ _ _ I _

20.0 10.0 0.0 0 100 200 300 400 500 600 Time (sec)

Figure G-11 Total Pumped ECCS Flow Rate in Break (Severed ECCS Line) to TXX-06125 Page 153 of 216 CPSES-1 SBLOCA D76 RSG Analysis 6-Inch Break - Severed ECCS Injection Line 1800 1600 -PCT Node (10.125ft) I- T No Rupture Predicted

_- 1400 LL I-.

LM1200 4)

M E

I-tn 1000 0 800 600 400 0 100 200 300 400 500 600 Time (sec)

Figure G-12 TOODEE2 Clad Temperature in Break (Severed ECCS Line) to TXX-06125 Page 154 of 216 CPSES-1 SBLOCA D76 RSG Analysis 6-Inch Break - Severed ECCS Injection Line 14.0 12.0 10.0 8.0

-J 0

6.0 0

U.

4.0 2.0 0.0 0 100 200 300 400 500 600 Time (sec)

Figure G-13 Core Mixture Level in Break (Severed ECCS Line) to TXX-06125 Page 155 of 216 CPSES-1 SBLOCA D76 RSG Analysis 6-Inch Break - Severed ECCS Injection Line 30.0 25.0 t t r

> 20.0 I j__

03 0,

1~

0 10.0 03 5.0 0.0 ______ ______ ______ ______ .1 0 100 200 300 400 500 600 Time (sec)

Figure G-14 Downcomer Liquid Level in Break (Severed ECCS Line)

Attachment I to TXX-06125 Page 156 of 216 CPSES-1 SBLOCA D76 RSG Analysis 6-Inch Break - Severed ECCS Injection Line 1400.0 1300.0 1200.0

" 1100.0 o...

(U 1000.0 0

0.

E 90o.0 F-E m 800.0 4) 700.0 600.0 500.0 400.0 0 100 200 300 400 500 600 Time (sec)

Figure G-1 5 Hot Assembly Steam Temperatures in Break (Severed ECCS Line) to TXX-06125 Page 157 of 216 CPSES-1 SBLOCA D76 RSG Analysis 6-Inch Break - Severed ECCS Injection Line 4.0 3.5 L-0 I.I.

5* 3.0

• 1 r 2.5

.2 t

o 2.0 L.

1.5 I.-

I-r c 1.0 0.5 0.0 0 100 200 300 400 500 600 Time (sec)

Figure G-16 Hot Assembly Heat Transfer Coefficients in Break (Severed ECCS Line)

C-7(p to TXX-06125 Page 158 of 216 CPSES-1 SBLOCA D76 RSG Analysis 6-Inch Break - Severed ECCS Injection Line 0.00

-0.05 E

-0.10 0) u -0.15

_j -0.20 U

( -0.25 0

U -0.30 4) o -0.35 U-

-0.40 0 100 200 300 400 500 600 Time (sec)

Figure G-17 Condensation Rate in Cold Leg Discharge in Break (Severed ECCS Line) c-17 to TXX-06125 Page 159 of 216 CPSES-1 SBLOCA D76 RSG Analysis 6-Inch Break - Severed ECCS Injection Line 1.0 0.9 0.8 0.7 0.6 0.5 CF a, 0.4 0.3 0.2 0.1 0.0 0 100 200 300 400 500 600 Time (sec)

Figure G-18 Break Quality in Break (Severed ECCS Line) to TXX-06125 Page 160 of 216 CPSES-1 SBLOCA D76 RSG Analysis 4-Inch Break - Only Broken Loop Seal Clears 2500.0

-P 174010000

. P 570010000

~2OO.0- -P 571010000

0. x P 572010000 L =--P 573010000 4,) 1500.0 -_------- __ --------

(L E '

0

4) 1000.0 ------

-- -'- ý -1 U,

0.0 0 200 400 600 800 1000 1200 Time (sec)

Figure H-1 Primary and Secondary System Pressures in Break (Only Broken Loop Seal Clears) to TXX-06125 Page 161 of 216 CPSES-1 SBLOCA D76 RSG Analysis 4-Inch Break - Only Broken Loop Seal Clears 1.2 1.0 0.8 0

1.2 L 0.6 0

0.4 0.2 0.0 0 200 400 600 800 1000 1200 Time (sec)

Figure H-2 Hot Assembly Region Void Fractions in Break (Only Broken Loop Seal Clears) c-1 ý to TXX-06125 Page 162 of 216 CPSES-1 SBLOCA D76 RSG Analysis 4-Inch Break - Only Broken Loop Seal Clears 1.2 -----------

-+-VOIDG 140010000

• VOIDG 135010000 VOIDG 130010000 1.0 - __ ------ 4----I-____

0.8 200 -- T...... 1200 0.0 0.) ----- ----------------- --

0.0 0 200 400 600 800 1000 1200 Time (sec)

Figure H-3 Central Core Region Void Fractions in Break (Only Broken Loop Seal Clears)

Attachment I to TXX-06125 Page 163 of 216 CPSES-1 SBLOCA D76 RSG Analysis 4-Inch Break - Only Broken Loop Seal Clears 1.2 1.0 0.8 0

u.0.6 U-0 0.4 0.2 0.0 0 200 400 600 800 1000 1200 Time (sec)

Figure H-4 Average Core Region Void Fractions in Break (Only Broken Loop Seal Clears) cqQ to TXX-06125 Page 164 of 216 CPSES-1 SBLOCA D76 RSG Analysis 4-Inch Break - Only Broken Loop Seal Clears 1.2 1.0 O 0.8 I-i LL o 0.6 I. 0.4 0.2 0.0 0 200 400 600 800 1000 1200 Time (sec)

Figure H-5 Upper Plenum Liquid Fraction in Break (Only Broken Loop Seal Clears) to TXX-06125 Page 165 of 216 CPSES-1 SBLOCA D76 RSG Analysis 4-Inch Break - Only Broken Loop Seal Clears 14.0 12.0 10.0 8.0

_I_

6.0 0

4.0 2.0

________________I 0.0 0 200 400 600 800 1000 1200 Time (sec)

Figure H-6 Hot Assembly Collapsed Water Level in Break (Only Broken Loop Seal Clears)

Attachment I to TXX-06125 Page 166 of 216 CPSES-1 SBLOCA D76 RSG Analysis 4-Inch Break - Only Broken Loop Seal Clears 2000.0

- HTTEMP 129101108 1800.0 . HT. 129101208 ....

HTTEMP 129101208 HTTEMP 129101308 16 0 0 .0 . ..... x H TT E M P 1 2 9 1 0 1 4 0 8 .. . . . . ... . .... .... . ... .. .......... ............ ... ...................

000-...,

~.1400.0 0,

(U 0- 2 S 1200.0 -~ - ---------

800.0 -

0 200 400 600 800 1000 1200 Time (sec)

Figure H-7 Hot Assembly Clad Temperatures in Break (Only Broken Loop Seal Clears)

Attachment Ito TXX-06125 Page 167 of 216 CPSES-1 SBLOCA D76 RSG Analysis 4-Inch Break - Only Broken Loop Seal Clears 1.2 1.0 - S

.2 0.8

-VOIDG 460030000

• VOIDG 461030000 C.)

VOIDG 462030000 .

x VOIDG 463030000 0=

o 0.4 0.2 0.0 p mi - -

0 200 400 600 800 1000 1200 Time (sec)

Figure H-8 Loop Seal Void Fractions in Break (Only Broken Loop Seal Clears)

Attachment I to TXX-06125 Page 168 of 216 CPSES-1 SBLOCA D76 RSG Analysis 4-Inch Break - Only Broken Loop Seal Clears 160.0 140.0 MFLOWJ 735000000 4 a MFLOWJ 736000000 120.0 MFLOWJ 737000000 x MFLOWJ 738000000 t E A 100.0 0

L, 80.0

~: ~

~~il4

'- 60.0 0

E 40.0 20.0 - 41001 0.0 I I H 1000 12 200 400 600 800 00

-20.0 Time (sec)

Figure H-9 Accumulator Mass Flow Rates in Break (Only Broken Loop Seal Clears)