ML20198J585

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Rev 4 to RXE-96-001, Cpses,Unit 2,Cycle 3,COLR
ML20198J585
Person / Time
Site: Comanche Peak Luminant icon.png
Issue date: 10/17/1997
From: Brozak D, Choe W, Maier S
TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:
Shared Package
ML20198J582 List:
References
RXE-96-001, RXE-96-001-R04, RXE-96-1, RXE-96-1-R4, NUDOCS 9710210147
Download: ML20198J585 (13)
v • d • e


Text

._.

. RXE:96-001, Rev. 4 2

-l CPSES UNIT 2 CYCLE 3 CORE OPERATING LIMITS REPORT October-1997 f

1 I'

/

/2/f7 Prepared:

Dates Daniel E. Brosak Reactor Physics N

10 /'7/97 Approved:

Date:

Stephen M. Maier Reactor Physics Supervisor I !I7 ! 9 )

Approved:

L Date Whee G. C oe Safety Analysis Manager 1

9710210147 971017 PDR ADOCK 05000446:

P PDR '

4 6

DISCLAIMER j

The information contained in this report was prepared for the specific requirement of Texa., Utilities Electric Company (TUIC),,

4

)

and may not be appropriate for use in situations other than those for which it was specifically prepared.

TURC PROVIDES NO WARRANTY NEREUNDRK, EXPRESS OR INPLIED, OR STATUTORY, OF ANY KIND OR NATURE WHATSOEVER, REGARDING-THIS REPORT OR ITS USE, INCLUDING BUT NOT LINITED TO ANY WARRANTIES ON MERCHANTABILITY OR FITNESS FOR A-PARTICULAR PURPOSE.

l By making this report available, TUIC does not authorise its use

]

by others, and any such use is forbidden except with the prior written approval of TURC.

Any such written approval shall itself 1

be deemed to incorporate the disclaimers of liability and disclaimers of warranties provided herein.

In no event shall TUEC have any liability for any incidental or consequential t

damages of any type in connection with the use, authorized or unauthorized,1of-this report or of the information in it.

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CELR fct; CPSES Unit 2 Cyclo 3 t

e TABLE OF CONTENTS 11 DISCLAIMER iii TABLE OF CONTENTS iv LIST OF FIGURES i

SECTION 1

1.0 CORE OPERATING LIMITS REPORT 2

2.0 OPERATING LIMITS 2.1 MODERATOR TEMPERATURE COEFFICIENT 2

2.2 SHUTDOWN ROD INSERTION LIMIT 3

3 2.3 CONTROL ROD INSERTION LIMITS 3

2.4 AXIAL FLUX DIFFERENCE 2.5 NEAT FTUX HOT CHANNEL FACTOR 4

2.6 NUCLEAR ENTHALPY RISE HOT CHANNEL FACTOR 5

2.7 SHUTDOWN MARGIN 5

4 iii

m COLR fCr CPSES Unit 2 Cyclo 3 i

i LIST OF FIGURES r

FIGURE PAGE 1

ROD EANK INSERTION LIMITS VERSUS THERMAL POWER 6

l 1

2 AXIAL FLUE DIFFERENCE LIMITS A8 A FUNCTION 7

OF RATED THERMAL POWER 3

R(E) - NORMALIEED F,(E) A8 A FUNCTION OF g

CORE NEIGET 4

W(Z) A8 A FUNCTION OF CORE NEIGHT -

(19000 MWD /NTU - EOL) 9 Rev. 3 F

iv r-., _, _,,,.

p9 p-9 y

4-

.m-t n-m.

- y p.

7 y

g.9-p

COLR for CPSES Unit 2 Cyclo 3 1.O G.QRE OPERATING. LIMITS.REE91T This Core Operating Limits Report (COLR) for CPSES UNIT 2 CYCLE 3 has been propered to satisfy the requirements of Technical Specification 6.9.1.6.

i The Technical Specifications af fected by t.his report are listed belows 3/4.1.1.1 Shutdown Margin - T., Greater Than 200'F

- 3/4.1.1.2 Shutdown Margin - T, Less Than or Equal to 200'F 3/4.1.1.3 Moderator Temperature coefficient 3/4.1.2.2 Flow Paths - Operating 3/4.1.2.4 Charging Pumps - Operating 3/4.1.2.6 Borated Water Sources - Operating 3/4.1.3.5 Shutdown Rod Insertion Limit 3/4.1.3.6 Col. trol Rod Insertion Limits 3/4.2.1 Axial Flux Difference 3/4.2.2 Heat Flux Hot Channel Factor 3/4.2.3 Nuclear Enthalpy Rise Hot Channel Factor O

1 am y

a-4.v-

,9, pgs

COLR fcr CPSES Unit 2 Cyclo 3 2.0 OPERATING LIMITS The cycle-specific parameter limits for the specifications listed in Section 1.0 are presented in the following subsections.

These limits have been developed using the NRC-approved methodologies specified in Technical Specification 6.9.1.6b, Items 5, 6, 7, 8,

9, 10, 11, 12, 13, 14, 15, 16, 17, and 19.

These limits have been determined such that all applicable limits of the safety analynis are met.

2.1 Moderator Tp.magrature coefficient (Specification 3/4.1.1.3) 2.1.1 The Moderator Temperature coefficient (MTC) limits are The BOL/A20/HZP-MTC shall be less positive than

+5 pcm/ F.

The EOL/ARO/RTP-MTC shall be less negative than 1

-40 pcm/'F.

2.1.2 The MTC surveillance limit is The 300 ppm /ARO/RTP-MTC should be less negative than or equal to -31 pcm/ F.

where BOL stands for Beginning of Cycle Life ARO stands for All Rods Out HZP stands for Hot Zero THERMAL POWER.

EOL stands for End of Cycle Life RTP stands for RATED THERMAL POWER 2

r 9

y p..

-=

r

. i- - --

COLR for CPSES Unit 2 Cyclo 3 2.2 Shutdown Rod Intertion= Limit (Specification 3/4.1.3.5) 2.2.1 The shutdown rods shall be fully withdrawn.

Fully withdrawn shall be the condition where shutdown rods are at a position within the interval of 222 and 231 steps withdrawn, inclusive.

2.3. Egntrol Rod Insertion _limita (Specification 3/4.1.3.6) 2.3.1 The control banks shall be limited in physical insertion as shown in Figure 1.

2.4 hgi31 Flux DifferRD.92 (Specification 3/4.2.1) 2.4.1 The AXIAL FLUX' DIFFERENCE (AFD) target band is +5%,

-12% at 100% RTP linearly expanding to +20%, -17% at 50% RTP.

Rev. 3 Below 50% RTP, the AFD target band remains constant at +20%, -17%.

2.4.2 The AFD Acceptable Operation Limits are provided in Figure 2.

I 3

1

~

COLR for CPSCS Unit 2 Cyclo 3 2.5 Meat Flug Hot Channel FactgI (Specification 3/4.2.2)

F(Z)5 (K(Z)] for P > 0.5 g

P P (Z) 5 (K(Z)) for P s 0.5 g

0.5 where

P=

Tuu 6 POWER RATED THERMAL POWER 2.5.1 F m = 2.40 Rev. 1 g

2.5.2 K(Z) is provided in Figure 3.

2.5.3 Maximum elavation dependent W(Z) values are given in Figure 4 valid for a burnup Rev. 3 range of 19000 MWD /NTU through EOL.

2.5.4 A constant 2% decrease in F margin allowance g

shall be used to increase F e(Z) for compliance g

with the 4.2.2.2.f Surveillance Requirement for all cycle burnups.

6 4

=

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e 9

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COLR for CPSES Unit 2 Cyclo _3 4

2.6 Nuclear Enthalov_ Rise Hot Channel Factor (Specification 3/4.2.3)

F", 5 F*,

[1 + PF, (1-P)]

where:

P=

THER_ MAL POWER RATED THERMAL POWER lRev.4 2.6.1 F",

=

1.53 0.3 2.6.2 PF,

=

2.7 Shutdown Marain 2.7.1 Shutdown Marain -

T..__ GIpater Than 200'F (Specifications 3/4'.'i.1.1, 3/4.1.2.2, 3/4.1.2.4, and 3/4.1.2.6) t The SHUTDOWN MARGIN shall be greater than or equal to 1.3% ak/k in MODES 1, 2,

3, and 4.

Less Than or Eaual to 200*F Shutdown Marain - T.'1.2) 2.7.2 (Specification 3/4.1 The SHUTDOWN MARGIN shall be greater than or equal to 1.3% ak/k in MODE 5.

1 5

L ll_--

I COLR for CPSES UNIT 2 CYCLE 3 FIGURE 1 ROD BANK INSERTION LIMITS VERSUS THERMAL FOWER 240

4...1

-(17,1,222i'~

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~

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73.1 222)

C- (.-..,----

220

.l, C-a.-..

/7 200

/

SANK S

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q 160 ii r

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on 80 f

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BANK D 60 C30 N

2

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-y-20

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~721,0) 'p 0

O 10 20 30 40 50 60 70 80 90 100 PERCENT OF RATED THERMAL POWI:R NOTES:

1.

Fully withdrawn shall be the condition where control rods are at a position within the interval of 222 and 231 steps withdrawn, inelusive.

2.

Control Bank A shall be fully withdrawn.

6

COLR for CPSES UNIT 2 CYCLE 3 FIGURE 2 s

i AXIAL FLUX DIFFERENCE LIMITS AS A FUNCTION OF RATED THERMAL POWER 100

( 9, 9. _0 ) ~'~~

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OPERATION OPERATION

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20 10

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0 10 0

10 20 30 40

-40 30 20 DEVIATION FROM TARGET AXIAL FLUX DIFFERENCE (%)

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COLR for CPSES UNIT 2 CYCLE 3 FIGURE 3 K(E)

NORMALIZED FQ(2) AS A FUNCTION OF CORE HEIGHT 1.1 (0.0,1.0)

.(6. 0.1 0,)

g 0.9 (12.0,0.925).

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0.8

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N4, E 0.7 g

d 0.6 b

0.4 n

N N

0.3 0.2 0.1 0

0 1

2 3

4 5

6 7

i 9

10 11 12 CORE NEIGHT (FEET) yo, sonoM Axial Axial Axial Axial

-Node K(E)

Node K(1)

Node K(E)

Node K(1) 1 - 31 1.0000 39 0.9800 47 0.9600 55 0.9400 32 0.9975 40 0.9775 48 0.9575 56 0.9375 33 0.9950 41 0.9750 49 0.9550 57 0.9350 34 0.9925 42 0.9725 50 0.9525 58 0.9325 35 0.9900 43 0.9700 51 0.9500 59 0.9300 36 0.9875 44 0.9675 52 0.9475 60 0.9275 37 0.9850 45 0.9650 53 0.9450 61 0.9250 38 0.9825 46 0.9625 54 0.9425 I

I (Node - 1)

  • 0.2 Core Height (ft)

=

+

8

.~

COLR for CP828 Unit 2 Cyalo 3 i

l FIGURE 4 W(E) A8 A FUNCTION OF CORE REIGHT (19000 MWD /NTU - EOL) 1.3 1.25

\\

h 1.2 s

_0

\\

_\\(

i1.15 m

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7 T

N N/

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1.1 j

1.05 1

0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0 BOTTOM CORE BEIGHT (FEET)

TOP Axial Axial Axial Axial Mode N(1)

Node N(E)

Node W(E)

Node W(Z) 21 1.146 32 1.113 43 1.128

/

1 - 10 i

11 1.231 22 1.148 33 1.111 44 1.122 12 1.223 23 1.148 34 1.112 45 1.114 13 1.215 24 1.146 35 1.116 46 1.103 14 1.205 25 1.143 36 1.121

.47 1.094 15 1.195 26 1.139 37 1.125 48 1.090 16 1.185 27 1.135 38 1.128 49 1.091 17 1.174 28 1.132 39 1.130 50 1.097 18 1.162 29 1.128 40 1.131 51 1.104 19 1.153 30 1.124 41 1.132 52 - 61 20 1.147 31 1.118 42 1.131 l-l Core Neight (ft) = (Node - 1)

  • 0.2 9

Revision 3

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