ML20108D041

Cycle 12 Colr

ML20108D041
Person / Time
Site:	Beaver Valley
Issue date:	05/01/1996
From:	DUQUESNE LIGHT CO.
To:
Shared Package
ML20108D035	List: ML20108D034 ML20108D041
References
NUDOCS 9605070253
Download: ML20108D041 (6)

Text

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'DPR-66 BEAVER VALLEY UNIT 1 CYCLE 12 l CORE OPERATING LIMITS REPORT This Core Operating Limits Report provides the cycle specific parameter limits developed in accordance with the NRC approved methodologies specified in Technical Specification Administrative Control 6.9.1.12.  !

Specification 3.1.3.5 Shutdown Rod Insertion Limits The shutdown rods shall be withdrawn to at least 225 steps.

Soecification 3.1.3.6 Control Rod Insertion Limits Control Banks A and B shall be withdrawn to at least 225 steps.

Control Banks C and D shall be limited in physical insertion as shown in Figure 1.

Soecification 3.2.1 Axial Flux Difference NOTE: The target band is 17% about the target flux from 0% to 100% RATED THERMAL POWER.

The indicated Axial Flux Difference:

a. Above 90% RATED THERMAL POWER shall be maintained within the 17% target band about the target flux difference.

b. Between 50% and 90% RATED THERMAL POWER is within the limits shown on Figure 2.

c. Below 50% RATED THERMAL POWER may deviate outside the target band.

Specification 3.2.2 Fg(Z) and Fxy Limits Fg ( Z) 5 .C_EQ

• K ( Z) for P > 0.5 P

Fg ( Z) $ _QEQ

• K ( Z) for P $ 0.5

0.5 Where

CFQ = 2.4 P= THERMAL POWER RATE 0 THERMAL POWER K(Z) = the function obtained from Fluure 3.

l BEAVER VALLEY - UNIT 1

~

1 OF 6 COLR 12 l

9605070253 960501 PDR ADOCK 05000344 P PDR

i

. l

. 1 DPR-66 The ' F ' limits [Fxy(L)] for RATED THERMAL POWER within specific corepYanesshallbe:

Fxy(L) = Fxy(RTP) (1 + PFXY * (1-P))

Where: For all core planes containing D-BANK:

Fxy(RTP) $ 1.71 For unrodded core planes:  !

Fxy(RTP) $ 1. 82 from 1.8 ft. elevation to 9.40 ft. elevation Fxy (RTP) $ 1. 76 f rom 9. 4 0 f t. elevation to 10.20 ft. elevation 1

PFXY = 0.2 l P= THERMAL POWER RATED THERMAL POWER Figure 4 provides the maximum total peaking factor times relative power (Fg *Prel) as a fur ction of axial core height during normal j core operation.

I SDecification 3.2.3 FNDH FNDH $ CFDH *(1 + PFDH *(1-P))

Where: CFDH = 1.62 PFDH = 0.3 l P= THERMAL POWER RATED THERMAL POWER l

l BEAVER VALLEY - UNIT 1 2 OF 6 COLR 12 l

DPR-66 .

220  !

[l(54.53,225) l 200 f l (100,187) 3: 180 f BANK C 160 7 E 140 z 120 7

[

O I (0,114) l BANK D E 300 /

$ 80 /

/

'CO 60 #

8 E 40 #

/

20 (8,0) l 0

O 10 20 30 40 50 60 70 80 90 100 RELATIVE POWER (Percent)

FIGURE 1 CONTROL ROD INSERTION LIMITS AS A FUNCTION OF POWER LEVEL BEAVER VALLEY - UNIT 1 3 of 6 COLR 12 1

DPR 100

% (-11, 90) (11, %)

UNACCEPTABLE UNACCEPTABLE h

~

OPERATION / \ OPERATION O

l" \

/

c 70 / \ '

s / \

b ACCEPTABLE OPERATION \

50 ' '

g (-31, 50) (31, 50)

O 40

$ 30 5

1 20 10 0

-50 -40 -30 -20 -10 0 10 20 30 40 50 FLUX DIFFERENCE ( AI ) %

FIGURE 2 AXIAL FLUX DIFFERENCE LIMITS AS A FUNCTION OF RATED THERMAL POWER BEAVER VALLEY - UNIT 1 4 of 6 COLR 12 1

l

.' . l DPR-66 ,

1.2

• l (0,1.000) (6,1.000) 10 ~

% (10.8, .940)h 7

.80 (12,.647)

\\

g g .60

.40

.20 0.00 0 2 4 6 8 10 12 CORE HEIGHT (Feet)

FIGURE 3 I F[ NORMAllZED OPERATING ENVELOPE, K(Z)

BEAVER VALLEY - UNIT 1 5 of 6 COLR 12 I i

~

d DPR-66

! I l l

. H 0.0, 2.400 ! 6.0,2.400 l 2.4 ,,

, r__I_ ' 10.8, 2.256 l g g 3

L 2.0

.\

.\

c 1 .6 - l 12.0,1.553 O.

CT LL

" \

>< 1.2

<C 2

0.8 BASIS FXY FROM 1.8 FT. UP TO 9.4 FT. = 1.82

• 0.4 FROM 9.4 FT. UP TO 10.2 FT. = 1.76 o o i

-0 2 4 s 8 10 12 CORE HEIGHT (Feet) l FIGURE 4 MAXIMUM (FqT*Prel) VS. AXIAL CORE HEIGHT DURING NORMAL CORE OPERATION BEAVER VALLEY - UNIT 1 6 of 6 COLR 12 l

=_ . - . .