ML20059E498

Forwards Revised Radial Peaking Factor Limit Rept for Cycle 1 Per Tech Specs Through Amend 1 &

ML20059E498
Person / Time
Site:	Comanche Peak
Issue date:	08/31/1990
From:	William Cahill, Walker R TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
TXX-90305, NUDOCS 9009100218
Download: ML20059E498 (10)

Text

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-- Log # TXX-90305 1.- - File # 915 3 3 916 illELECTRIC August 31, 1990 William J. Cahill, Jr.

Ezrcuttw Ykr brMJrnt U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D. C. 20555

SUBJECT:

COMANCHE PEAK STEAM ELECTRIC STATION (CPSES) v DOCKET NO. 50 445 REVISED RADIAL PEAKING FACTOR LIMIT' REPORT Gentlemen:

In accordance with CPSES Technical Specification 6.9.1.6, TU Electric submits >

herewith a copy of the revised Radl Peaking Factor Limit Report for Cycle l'.

This report revises the Radial Peak. ,9 Factor Limit Report submitted to the NRC in letter logged TXX-90180 dated May 15, 1990, and is consistent with the CPSES Unit 1 Technical Soecifications through Amendment 1.

As required, the enclosed report contains: (1) the FxyRTP limits for all

-core planes containing Bank "D" control rods and for all unrodded core planes and (2) a plot of the function FgT.pRel vs, axial core height with the ,

limit envelope included. The F xy limits have been specified for BOL (0-3000 MWD /HTU) and for the balance of the cycle for both Normal Operation mode and' Base Load Operation mode.

If you have any questions concerning this information, please contact either Hickey Killgore or Jimmy Seawright of the TV Electric staff. They can be reached by phone at (214) 812-8271 or (214) 812-4375, respectively.

Sincerely, Y ten h'.

William J. Cahill, Jr.

By: @l -

t R. D. Valker Manager of Nuclear Licensing JDS/cid Enclosure c - Mr. R. D. Martin, Region IV Resident inspectors, CPSES (3) 02143 pod 9 400 North Olive Street LB. 81 Dallas, Texas 75201 45 9 h PNV

b

. , . Enclosure to TXX-90305 E*- .Page 1 of 9 COMANCHE PEAK UNIT 1 CYCLE 1 RADIAL PEAKING FACTOR LIMIT REPORT This Radial Peaking Factor Limit Report is provided in accordance with paragraph 6.9.1.6 of the Comanche Peak Unit 1 Nuclear Plant Technical Specifications.

The Fxy limits for RATED THERMAL POWER within specific core planes for Cycle 1 shall bei

1. FRP less than or equal to 1,71 for all core planes containing bank "D" control rods, and

2. F TP less than or equal to the elevation dependent values shown in Figures 1 to 4 for all unrodded core planes.

Figures 1 and 2 apply for Normal Operation and Firi:res 3 and 4 apply for Base Load Operation between 75% and 100% of PME3 THERMAL POWER, inclusive. For each mode of operation the limits are given for 0 to 3000 MWD /MTV cycle burnup and for 3000 MWD /MTU to E0L. The minimum allowable power-level for Base Load Operation, APLND, for Comanche Peak-1 Cycle 1 is 75% of RATED THERMAL POWER.

These Fx (z) limits are used to confirm that the heat flux hot channel f actor F (z) will be limited to the Technical Specification values of:

F(z)1[%)[K(z)]forP>0.5and, 0

Fg(z) 1 [4.64] [K(z)] for P 1 0.5 assuming the most limiting axial power distributions expected to result from the insertion and removal of Control Banks B, C and D during operation, including the accompanying variations in the axial xenon and power distributions as described in the " Power Distribution Control and Load Following Procedures," WCAP 8403, September, 1974. Therefore, these Fxy limits provide assurance that the initial conditions assumed in the LOCA analysis are met, along with the ECCS acceptance criteria of 10CFR50.46.

See Figures 5 to 8 for plots of [FOT , pRel] vs. Axial Core Height.

1 s.. *

-mm:

. t> 3

- 2.6 *S o

N tt= -

-C o 7.'

Hetytt F

~**

(Ft.) XY c 2.4 .

1.95 * -4 2.14

• y ._

2.33

• e

• C 2.60 '1.745 o

2.2 2.s7 1.ess a 3.13 1.850 o.

3.40 1.S48 *~

3.67

• 3.s6

• 4.05 =

2.0 4.32 1.571 4.5s 4.552 4.s5 1.553 5.12 1.571

^ 5.39

• U

• 5.57 =-

3 1.8 .

5.76 e

>< + 8.03 1.826

' S.30 1.834

+ . 8.57 1.851

++ + e.s3 1.eso I 7.1o 1.6 7.29 =

. . a

++ 7.4s l 7.7s- 1.7sa s.o1 1.7s3 s.2s 1.tse 3,4 s.55 1.914 s.s2 =

9.ot =

9.19 "

• 9.46 2.257 -

9.*F3 2. 3M 1,2 10.00 2.54s

(

l 1.0 O 2 4 6 8 10 12 l CORE EICHT (FEET)

BOTTOM TOP

• TOP AND 80TTOM 15% AND GRID LOCATIONS EXCLUDED AS PER TECHNICAL FPECFICATION .

FIGURE 1 I

NORMAL OPERATION FXY ( 0 - 3000 MWD /MTU ) '

_ ._ _ ~ _ . . _ _ _ - . __ _ _ _ - _ _ _ _ _ _ _ _

' - '. . J Q; ea tu *

. O t.e5 m '

2.8

, -o.,e'z D r+ .

O 2.6 - me gnt r ._.

(Ft.) -XY ><-

x s

1.95 = c 2.14

• O 2.33 '= _$.

2,4 m 2.80 1.624 2.87 1.599 3.13' 1.579 3.40 1.592 3.67 =

22 3.96 =

4.o5 =

4.32 1.591 4.58 1.590 4.85 1.59%

_2.

~

0 s.12 s.39 1.82o 5.57 5.76

• Q A S.03 1.885 1.6 ~

S.30 1.861 ~

+ S.57 1.852

+ S.83 1.672

+ *

,**+ 7.10 7.29

• 1.6 .,, ,,,

+

7.4s .

+- 7.75 1.753 8.01 1.773 5.25 1.724 S.55 1.890 s.s2 =

1.4 .

3.o1 3.19 e 9.46 1.571 9.73 1.552 1,2 10.00 1.380 1.0 ~

0 2 6 8 10 12 CORE E IGHT (FEET)

BOTTOM TOP

• TOP AND BOTTOM 15% AND GRIO LOCAT90NS EXCLUDED AS PER TECHNICAL SPECIFICATON .

FIGURE 2 NORMAL OPERATION FXY ( 3000 MWD /MTU - EOL )

a.. . 7, o yrn >

' to n .

tD " '

O-2.6

• E-O7

-% tD e r+

0 Height F y (Ft.) XY x.

x 8

1.95

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• O

• 2.33

• o; py 2.80 1.745 .m 2.87 1.588 -

3.13 1.850 3.40 1.846 3.87

• 3.88

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- 5.12 1.591

$

• 5.39

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E .8 as.

,

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+

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1.6 . .

7.10 e

++ 7.29

• 7.48

• l 7.75 1.768 s.01 1.7s0 3.28 1.838 8.55 1.914 a.s2 =

.9.01

• 3.19

• 9.46 2.257 9.73 .2.375 1.2 ~

O.00 .2.548 1.0 0 2 4 6' 8 10 12 COE ElCHT (FEET)

BOTTOM TOP

• YOP AND BOTTOM 15% AND GRfD LOCATIONS EXCLUDED '

AS PER TECHNICAI. SPECIFICATION .

FIGURE 3 BASE LOAD FXY ( 0 - 3000 MWD /MTU )

. - - - . _ - _ ,- _ -;. _ - . . . ~ . . _ __ , ._. . . . ~.. .

,..;-.. - - m- i l

4 l

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to c+

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r XY d

x e

.. 5 2.14 8

W l

2.4 23 *

• 2.00 tn i 1.e39 2.87 - 1.613 3.13 1.599 3.40 1.500 2.2 8

• 3.'87 86 .

4.05

• 4.32 1.599 4.54 1.599

_2. 0 4.85 1.599 N 5.12 1.s2o 5.39

• Q 5.57 =

w 5.76 e 6.03 1.865 6.30 1.s51

+

+ S.57 1.652

• 6.33 1.672

+

, '+e 7.10 =

y . + 7 28 *

• 7.48 *

+< 7.75 1.753

~8.01 1.773 8.28 1.724 1.4 S.55 1.000 3.82 =

s.01 .

9.19 =

8.46 1.571 1,2 S.73 -1.552 10.00 1.550 1.0 0 2 4 6 8 10 " 12 CORE SEIGHT (FEET)

BOTTOM TOP

• TOP AND BOTTOM 15% ANO GRs0 LOCATaONS EXCluOED AS PER TECHNICAL. SPECF8 CATION .

FIGURE 4 BASE LOAD FXY ( 3000 MWD /MTU - EOL )"

Enclosure to:TXX-90305

- Page: 6 of: 9 '

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FIGURE 5 MAXIMUM (F *P ) VERSUS AXIAL CORE HEIGHT DURING Q REL NORMAL OPERATION (0 - 3000 MWD /MTU) l

f.

Enclosure to TXX-90305'

^Page 7 of 9-

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FIGURE 6 MAXIMUM (F 'P ) VERSUS AXIAL CORE HEIGHT DURING Q REL NORMAL OPERATION (3000 MWD /MTU - EOL)

U = Enclosure to' TXX-90305 i ,

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FIGURE 7 ,

MAXIMUM (F 'P ) VERSUS AXIAL CORE HEIGHT DURING Q REL BASE LOAD OPERATION (0 - 3000 MWD /MTU)

--__--_----.---__-______-__._..---_-___--_-_-----___---____._____________N

Enclosure to TXX-90305

' Page 9 'of 9

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BASE LOAD OPERATION (3000 MWD /MTU - EOL)