ML20050A515

Tech Spec Changes to Figures 3.1-2a & 3.1-3a of Cycle 3 Reload Rept BAW-1707 (Figures 8-5 & 8-10 of Rept).Safety Evaluation Encl

ML20050A515
Person / Time
Site:	Davis Besse
Issue date:	03/23/1982
From:	TOLEDO EDISON CO.
To:
Shared Package
ML20050A509	List: ML20050A508 ML20050A513 ML20050A515
References
798, TAC-48044, NUDOCS 8204010363
Download: ML20050A515 (6)

Text

-:

^

Docket No. 50-346 License No. NPF-3 Serial No. 798 March 23, 1982

' Attachment I.

Changes to Davis-Besse Nuclear Power Station Unit 1, Appendix A Technical Specifications Figures 3.1-2a and 3.1-3a of Cycle 3 Reload Report BAW-1707 (Figures 8-5 and 8-10 of the report).

A.

Time required to Implement.

This change is to be effective upon NRC approval.

B.

Reason for Change (Facility Change Request 80-268 Supplement 2).

The final burnup of Cycle 2 at Davis-Besse lies within the 306+10 EFPD window..This results in the relaxation of the regulating rod insertion limits for the first 60 EFPD of Cycle 3.

C.

Safety Evaluation (See attached) f f

a P

J.

SAFETY EVALUATION i

i

.This request provides the revised regulating rod insertion limits for four 1,

and-three pump operation during the first 60 effective full power days of

' Cycle 3 operation. The safety function of these limits is to ensure maintenance'of acceptable power distribution limits and shutdown margin.

These limits.also control the potential effects of a-rod ejection i

accident.

.The relaxation in the attached curves (limits) is brought about by the final burnup;of Cycle 3 (296 EFPD) which lies in the 306i10 window of the revised Cycle 2 (complete' withdrawal of axial power shaping rods and i

coasting down of power level towards the end of cycle) design.

Per the analysis provided in the reload report and the safety evaluation j

'in~ Toledo Edison submittal of March 5. 1982'(Serial No. 787), it is

! concluded that the inferences of the reload analysis and the previous safety-evaluation are not violated. Hence, it is concluded that the changes preposed herewith do not involve an unreviewed safety question.

j-i i

I 4

k i

F c

l l

lA y _

y

.#w c

-,... ~

e.

l l

Figurc 8-5.

Regulating Group Position Liraits. O to 60 EFPD, Tour RC Paunpa - Davis Besse !, Cycle 3 (Tecli Spec Figure 3.1-2a)

(300,102)

(223 I02)

(211,102)r 3 ponga tgygt l00 l

CUTOFF = 1905 (211,92) h

$HuiODIF (261,80) 80 2

NARGIN LIMil

.i

'E unAcctPIAalt ga OPtRAll0N OPERAT10N RESTRICIED

[

(168,50)

(225.5.50) o 15 40

'E ACCEPTABLE OPIRATION 7

' E 20 (96.15)

E

(0,2.51 0

i i

0 100 200 300 8

Roa inaea (:; witnara n)

~

CR 5 0

15 100 g

CR 6 i N

O 25 15 100 g

'" 2 'O 55 160 3

l i;

S S

/6

)

b3 i

ETA i

D L

b2 t+

s i3 1

s v

RN E

0 D

L0 k

E E1 I

V C

E =

)

I L

D R

F j O 0.

[

T F

2 S

E T

0 R

U 3

k C

(

0 0

N

'0 0

0 E

3 1

D l

L N l

B 0 P

A A

l u

F R

I l

E P A E

P E R 0

O c

C E C P 6

)

A O 3

2

)

)

0 2

o 0

u 9

1 t e 5

l 1

1

)

5 7

7 0

0 c 2

2 8

5 y

(

(

2 sC 1

2 t

6

(

i.

2 i

(

0 5

m1

)

'0 i

a D

)

1

)

N E n

L e 2 0

I n

i 2

s -

l C

a

=

0 ns 1

l I

t 1

A R o

R T 0 d n

3 i

i 0

t.

E S i

t P

E 2

is e O R Is

(

i si r cv u s

(

P a g D i 5

O x

p F

e i7 u

o-d u

7 n

c i

rs e l

R

)

C G p p i

0 d

M m S I

5, o

gu N L 8

R i

nP h R

6 O N l

i c

O I

(

tC e

T G

aR T U R 0

5 l

(

H A i1 0

2 ur S N gu u

eo RF O

O 5

i

)

a.

1 B

5 E

e 5

0 L

6 r

B 7

9 u

A N 6

(

T 0 g

R P

l G

i E l F

C A C R A

E N P U O

~

0 0

0 0

0

) 0 5

0 8

4 2

5 1

R 2,

G 0

fw 2 > g $ n O5"y[::E

(

maoSx " GgR

6 Figurc 8-10.

Regulating Group Position Limits. O to 60 EFPD, Three RC Pumps - Davis Besue 1. Cycle 3 (Tech Spec Figure 3.1-3a) 100 O

50

.y (223.77)

(271.77)

') (300,77)

~

(271,69.5)

.E

' N'

[

60 (2G1.60.5)

SHU100sM jg NARGIN Lilfli j'*

E DPIRAll0N RISIRICTED 40 j

UN ACCEP T ABLE (1G8,38)

(225.5,38) l a[.

OPERATION 3

ACCEPIABLF 20 OPIRAil0h (90.11.15) l(0.2.5 l-0 100 Roo Innes (i, Istnoramn) 200 300 I

i I

0

{

CR 5 s 0

35 100 CR G i O

25 j$

ID

{

GR 7.

=

I 0

25 100 c

i T

e.

4 I

Figure 8-10.

Regulating Group Position Limits. O to 60 EFPD, Three RC Pumps - Davis Besse 1. Cycle 3 (Tech Spec Figure 3.1-3a) 1 100 -

k.

BY !iYiDATE 3fSIs2 80 (223.71)

(211.71) c (290,77)

(211,69.5)

(300.69.5)

E E

(261,60.5)

[

60 SHuiDOIN y

NARGIN LIN!!

OPERATION E

RESTRICIED cob c

40 UNACCEPTABLE (168,38)

(225.5,38) g OPERAll0N ACCEPTABLE 20 OPERAll0N (96.11.15)

(0,2.5' i

i 300 O

0 100 Roa innen (5 Witnarann) 200 3

GR S i i

cr 0

15 100 GR 6

'g j$

j5 th0 x

GR 1.

e 0

25 100 G

=

0 X

e

~

M M

--