ML20108D041
| ML20108D041 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 05/01/1996 |
| From: | DUQUESNE LIGHT CO. |
| To: | |
| Shared Package | |
| ML20108D035 | List: |
| References | |
| NUDOCS 9605070253 | |
| Download: ML20108D041 (6) | |
Text
- _ _ _ _ _ - - _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
'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Specification 3.1.3.5 Shutdown Rod Insertion Limits The shutdown rods shall be withdrawn to at least 225 steps.
Soecification 3.1.3.6 Control Rod Insertion Limits Control Banks A and B shall be withdrawn to at least 225 steps.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
i 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 PFXY = 0.2 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.
SDecification 3.2.3 FNDH FNDH $ CFDH *(1 + PFDH *(1-P))
Where:
CFDH = 1.62 PFDH = 0.3 P=
THERMAL POWER RATED THERMAL POWER l
BEAVER VALLEY - UNIT 1 2 OF 6 COLR 12 l
[l(54.53,225) l 220 200 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 UNACCEPTABLE
(-11, 90)
(11, %)
UNACCEPTABLE h
~
OPERATION
/
\\
OPERATION O
/
\\
l"
/
\\
c 70 s
/
\\
\\
b ACCEPTABLE OPERATION 50 g
(-31, 50)
(31, 50)
O 40
$ 30 51 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
DPR-66 1.2 *
(0,1.000)
(6,1.000) 10 (10.8,.940)h
~
7
.80
\\
\\
g (12,.647)
.60 g
.40
.20 0.00 0
2 4
6 8
10 12 CORE HEIGHT (Feet)
FIGURE 3 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 r__I_
' 10.8, 2.256 l 2.4 g
g 3
L 2.0
.\\
.\\
c
.6 l 12.0,1.553 1
O.
\\
>< 1.2
<C2 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)
FIGURE 4 MAXIMUM (FqT*Prel) VS. AXIAL CORE HEIGHT DURING NORMAL CORE OPERATION BEAVER VALLEY - UNIT 1 6 of 6 COLR 12 l
=
.