ML20087D130

Rev 1 to Sequoyah Nuclear Plant Unit 1,Cycle 6 Core Operating Limits Rept

ML20087D130
Person / Time
Site:	Sequoyah
Issue date:	11/21/1991
From:	Lemons J TENNESSEE VALLEY AUTHORITY
To:
Shared Package
ML20087D126	List: ML20087D124 ML20087D130
References
NUDOCS 9201150203
Download: ML20087D130 (11)

Text

" A L36 911122 001 2

. QA RECORD SEQUOYAll NUCLEAR PLANT UNIT 1, CYCLE 6 CORE OPERATING LIMITS REPORT REVISIDH 1 NOVEMBER 21, 1991 Prepared i h14 .

GMN_/ ll- 19' 9I Nuclear Fhd1 Engineering Date Reviewed

/h) 0 v 2n w / ll~{C1Sl Reactor Engint ng Supervisor Date Approbed:

bonm) M?m ~ , op t/m TechnI al Support ManagoV /Date' M &' / ///*4/

^

I P Chairman / Date l

1038U 9201150.~>O3 ?20107 PDR ADOCK OS0003?7 p POR

- . - - _ . - - ~ , - - - - . _ - _ . - - . . . - _ . - - - . . - . . - - . _ - . - - .-

e. .'** '

4 COLR FOR GEQUOYAll UNIT 1, CYCLE 6 1.0 COPE OPEPATJ110_ LEI.TLfit0RI This Core Operating Limits Report (COLR) for Sequoyah Unit 1, Cycle 6, has been prepared in accordance with the requirements of Technical Specification (TS) 6.9.1.14.

The TSs affected by this report are listed belows 3/4.1.1.3 Moderator Temperature Coefficient 3/4.1.3.5 Shutdown Rod Insettlon Limit 3/4.1.3.6 Control Rod Insertion Limits 3/4.2.1 Aulal Flux Difference 3/4.2.2 Ileat Flux Ilot Channel Factor 3/4.2.3 Nuclear Enthalpy llot Channel Factor 2.0 OPERATING k MllS

, The cycle-specific parameter limits for the pecifications listed in  !

Section 1.0 are presented in the following subsections. These limits have been developed using the HRC-approved methodologies spc;1flod in TS 6.9.1.14.

2.1 tigduntor Tempusture coef fislant (Specification 3/4.1.1.3)

[3/4.1.1.3] .

2.1.1 The moderator temperature coefficient (MTC) limits ares The BOL/ARO/IlZF HTC shall be less positive than 0 ok/k/*P (BOL +

limit). With the measured BOL/ARO/112P-MTC more positive than +

-1.18x10-5 ok/k/*F (as-measured MTC limit), establish control +

rod withdrawal limits to ensure the MTC remains less positive than +

0 ok/k/*r for all times in core life. +

The EOL/ARO/RTP-MTC shall be less negative than -4.0x10-4 bk/k/*T.

2.1.2 The 300 ppm surveillance limit is: ,

Themeasured300gpm/ARO/RTP-MTCshouldbelessnegativethanor equal to 3.1x10* Ak/k/*r. ,

where BOL stands for Beginning of Cycle Life ARO stands for ALL Rods Out IIZP stands for llot Zero TIIERMAL POWER EOL stands for End of Cycle Life RTP stands for RATED THERMAL POWER

+ Indicates revision 1 changes.

Page 1 of 10 1038U

... .' ~ ,

. COLR FOR SEQUCYAll UNIT 1, CYCLE 6 2.2 Shutdown Rod Insertion Limit (Specification 3/4.1.3.5)

[3/4.1.3.5) 2.2.1 The shutdown rods shall be withdrawn to a position as defined below Cvele Burnun (MWD /MTU) Steps Withdrawn i

1 2,000 1 226 to 1 231 (

> 2,000 to < 14,000 1 222 to 1 231 1 14,000 1 226 to 1 231 2.3 Control Rod Insertion Limit (Specification 3/4.1.3.6)

(3/4.1.3.6) 2.3.1 The control rod banks shall be limited in physical insertion as shown in Figure 1, 2.4 Aglal Flux Difference (Specification 3/4.2.1)

(3/4.2.1) 2.4.1 The-axial flux difference (AFD) limits are provided in Figure 2.

2.5 Upat Flux 110t Channel Facter -0F (Z) (Specification 3/4.2.2)

(3/4.2.2)

RTP Fg(Z) 1

• K(Z) for P > 0.5 P

RTP Fg(Z) 1

• K(Z) for P 1 0.5 0.5 THERMAL PQgd2 where P = RATED THERMAL POtER RTP 2.5.1 Pg = 2.32 2.5.2 K(Z) is provided in Figure 3.

Page 2 of 10

[- 1038U 5:

s y em

COLR FOR SEQUOYAH UNIT 1, CYrt3 6 2.5.3 Note that the W(Z) values requirod by TS SR 4.2.2.2 are provided in Figures 4 thrcagh 7. This information is suf ficient to determine h'(Z) versus core beight for all cycle burnups through the use of three point interpolation.

N 2.6 Nuclear Enthalpy Rise Hot Channel Factor - AF g (Specification 3/4.2.3)

[3/4.2.3)

N RTP F4H i FAH * (1+PFAH * [1-P])

THERMAL POWER where P = RATED THERMAL POWER RTP 2.6.1 FAH = 1.55 2.6.2 PFAH = 0.3

+

0 Page 3 of 10 10380 1038U x_ -

.. u-T (L ,

t COLR For Sequoyah Unit-1 Cycle 6

i

(.09.281) (.66.231) s' (ru'ily Wit hdrawn llegionj ,'<'

~ ~ ' ~ ~ ~ ~

G61. 2 2 2 ) ' i

[*(.0 5.~2 2 2 ) '~~ ~~~~'

(0.210) B AN K B - .

200 e

n o __ . __U.0.10 2) d +

B 8

160 .

7 .

n -

k S

/. BANK C t 120 - -

o ,

P _ -

P l 0 80 I l-r 4 , - --

b ig

!'  ! . BANK D I

l _.-_.._!  ! -

l o

n 40 - - - -- 4- - d i i  !

. . - .a _ . . . , , _

I l

(, t 9.0 ) I O

o 0.2 0.4 - 0.6 0.8 -1 (fully inserted!'Fractiori of Rated Thermal Power FIGURE 1 Rod Bank Insertion Limits Versus Thermal Power Four Loop Operation-Fully withdrawn region shall be the ' condition where . shutdown and control banke are at a position .ithin the interval of ! 222 and 1231 steps withdrawn, incluelve.

Fully withdrawn ohell be the poslllon as defined below.

Cvele Burnue (mwd /MTU) Ste n Wit h dr ayg} -

!2000  ! 220 to ! 231 e 2000 to e 14.000  ! 222 to 1231 t 14.0 0 0 '  ! 226 to !231 Page 4 of 10

-% - g..m g .g 3.g-,9 aygj ia,. .-,39, --+,gggg- gi,pg.,io,-g9g==,-.- pa,9 g - p- g g99.pg 9 .g g 9ew .- w-ymAJg g- ,y ,9 w- ryg pg qg yew pye.9 y - y g y- t--pg ww-m q *y vg y- -way-

1

(

COLR For Sequoyah Unit 1 Cycle 6 120 110 ---

• j--]

% (~ 15,100) (6,100) 100 -- - " - - ~ ~ ,

--1 O

f 90 t .-1 Unacceptable Unacceptablo R operat'on l operation i a 80 --

i

! I 1 - --+

t g l Ac, cept able d 70 -} - -T- m-Ope ratio n -- 7--t

I 4---

1 4 T 60 - - - - - - - - --

i h  !  :

! i i e j  !  !

r 50 -

-i ( 2 0, 0 ) -* ~ ~' - ~

m - -- - -l ( . 3 . 5 0j ) *-

j i j l

(

• l 40 - 1 i

---f-: ,

-t-i H r P 30 - - - I- -- - -- -- ----1--

0 l f

W j c 20 - -- - - - - -- -~ -

r 3 --

10 - - - -- - - - - - = - a -

0

-5C 30 10 0 10 20 30 40 50 Flux Difference (61) %

FIGURE 2 i

Axial Flux Difference Limits As A Function Of Rated Thermal Power Page 5 of 10

l e..

COLR For Sequoyah Unit 1 Cycle 6 1.2 1.1 ~

1 i

N --

! l o 0.9  :-

r  !

[ 0.8 --

-1 t I i 1 0.7 - - -- r- - -i - - m - m ---  !- - - - -

z  : l l 1 l

e .

I j  !

d 0.6 --

-t- - -"----j-- T- ,

! 1  !

( h0.5 - --

- -i -

Core Height

K(Z) i 0.000 1.000 p 0.4 - --

-- - ~ t- c;ooo ml1;ooo-0 10.800 10.940 0.3 -- -

' - 12.0 0 0_ ..J 0. 0 2 5_.

r 0.2 -- - - -* - - - - - - - --

0.1 - -

0 O 2 4 6 8 10 12 Core Height (Feet)

FIGURE 3 K(Z) - Normalized Fq(Z) as a Function of Core Height Page 6 of 10

(

l

COLR for Sequoyali U1:1t 1, Cyc.le 6 l TVA' SEQUOYAII UNIT 1 CYCLE 6 SEPTEMBER 1991 VJ Hr!GHT MAX

(- (F(ET) W(2)

~

0.00000 1.0000 s 0,20000 1.0000 O.40000 1.0000 1.50 0 60000 1.0000 0.00000 1.0000 1.0000 1.0000 1.2000 1.0000 1.4000 1.0000 ,

1,4$ 1.6000 1.0000

~

1.0000 1.3487 2.0000 1.3313 2.2000 1.3130 2.4000 1.2896 1.40 2.6000 1.2620 2.8000 1.2369

~

• l.0000 1.2189 1.2091 l 3.2000

, l 3.4000 1.2051 1.35 .

3.6000 1.2030

, 3.8000 1.2006

^

N 4.0000 1.1977 4.2000 1.1940

, , 4.4000 1.1894

[1.30  ; ,, 4.6000 1.1838 x l 4.8000 1.1773

<C i L.OOOO 1.1706 5 i , 5.2000 1,1615 i i i 5,4000 1.1546 gl.25 , , , 5,eOOO i.iG1,

+

4 )  ! 5.8000 1.1720

> i i . i a o' 6.0000 1.1811 Q' i i T is+**< + l 6.2000 1.1893

( $ ' i l'o e,  !# ' T 4 $ ~i '

eT' ' 6.4000 1.1964 y i i

..  ;

• f i e,.4 L, - 6.6000 1.2023

- *_ i_ 'e 6.8000 1.2069 T

! i ,,

e 7.0000 1.2097

' I

• a 7.2000 1.2119 s & i 7.4000 1.2146 j*j$ '

) I

' ' t

• I I 7.6000 1.2162 i ' ' I I

! I I 7.8000 1.2159 8 ' ' II 8.0000 1:2136

' ' ' I I 8.2000 1.2005 1.10 8 . 4 m0 1.2030 I ' ' l '

8.6000 1.1939

' ' l '!  ! 8.8000 1.1918 I ' I ' ' '

!  ! 9.0000 1.1977 l i 1 1,2048 9.2000 1.05 ' '

Sdmo i.2097 I ' I ' 9.6000 1.2169 I I I

! ' ' ' I i 9.8000 1.222e I ' ' I '

10.000 1.2256

! 10.200 1.2266 1.00 10.400 1.OcOO O 2 4 6 -

8 10 12 10.600 1.0000 4 CORE HEIGHT (FEET)

'o 8 * '** l BOTTOM TOP 11.000 1.0000 11.200 i.OoOO 11.400 1.0000 l 11.600 1.0000 l FIGURE 4 n.em i . mm 12.000 1.0000 SEQUOYAI! UNIT 1 CYCLE 6 l RAOC

SUMMARY

OF MAX W(Z) AT 150 MWD /MTU l

• TOP AND DOTTOM 15% EXCLUDED AS l'ER ECil SPEC 4.2.2.0 Ro' &"*3112.00pm Page 7 of 10

a COLR for Sequoyah Unit 1, Cycle 6 TVA SEQUOYAH UNIT 1 CYCLE 6 SEPTEMBER 1991 W HilGHT max (FEET) W(2)

O.00000 1.0000 O.20000 1.0000 -

1.50 O.40000 1.0000 0,e0000 3,0000 0.80000 1.0000,,'

1.0000 1.0000 1.2000 1.0000

' 1.4000 l*N 1.0000 ' 3

, 1.6000 1.0000 1.8000 1.3140 2.0000 1.2999 1 2.2000 1.2847 3

2.4000 1.2647 2.6000 1.2406 f 2,8000 1.2150 L 3.0000 1.1965 l 3.2000 1.1874 j*3$ 3.4000 1.1838 3.6000 1.1824 m 3.8000 1.'1810 N 4.0000 1,179i v I* 4.2000 1.1765 kj,30 ' I 4.4000 1.1729 I

X '

4.6000 1.1685 4.8000 1.1635 h '- I 5.0000 1.1566

' ' ' ' 5.2000 1.1526 U 1. F# 5.4000 1.1580 O ,' l l '-

l e',, ,' '

5.6000 1.1717 t

5.8000 1.1846 h , ll , l ,,' ,, f t 6.0000 1.1959 4 i ,i j ,g 6.2000 1.2064

( s1.20 , , , , , , , ,

,e 6.4000 1.2155 2 i i ,

,,;4"  ; , i , , , 6.6000 1.'232 D j i ,

l

,, 6.8000 1.2294 W 77,

,'i v ,' 7.0000 1.2339 j, j ,

, , , i o , v, , , 4 7.2000 1.2366 1.15 , , , , , , , , , , , , , 7.4000 t.2373 i 2 , 6 ,  ; , j ' ,  ; ,  ; 7.6000 1.2358

, , , i i i i j i i a 7.8000 1.2321

, i , i j , , ,

, , 8.0000 1.2260

_f . 1 i a i i i i i e i i e 4 8.2000 1.2174 1.10 B,4000 1 , , , , , , , , i.2062 i , i i i i i i i i a 8.6000 1.1924

, e i 4 i i j , , i b.8000 1.1778 i i , j i i l j i ,! i ; 9.0000 1.1769

. i i e i . 9.2000 1.1877 1.05 , , ,

9,4000

, , , , , i.1978 i

• i i I i i 6 9.6000 1.2092 i i i , i 9.8000 . 2207 i 6 i i

~

l i 10.000 1.2320

. . i . > > i i ' ~""1 ~ 10.200 1.2436 0 2 4 6 8 10 12

'0 * O 10.600 1.0000 BOTTOM CORE HEIGHT (FEET) 70p 10.800 2.0000 11.000 1.0000 11.200 1.0000 11.400 1.0000 11.600 1.0000 FIGURE 5 11.800 1.0000 12.000 1.0000 SEQUOYAII UNIT 1 CYCLE 6 RAOC

SUMMARY

OF MAX W(Z) AT 4000 MWD /MTll

' TOP AND DOTTOM 15% EXCLUDED AS PER *ECli SPEC (2.2.0 Rev. 8/2.3,912.00pm Page 8 of 10

-- , . . ~ _ . _ __ .

, COLR FOR Sequoyah Unic 1, Cycle 6 TVA SEQUOYAH UNIT 1 CYCLE 6 1 SEPTEMBER 1991 h

( PEIGHT tFEET) m w( 2 )

1.50 0.00000 1.0000 0.20000 1.0000 0.40000 1.0000 O.00000 1, .

O.80000 1, O 1.45 -

i.0000 1.0000 1.2000 1.0000 $

1.4000 1.C000 1.6000 1.0000 1.40 1.8000 1.2503

2. cO% 1.2397 4

2 . . t.,00 1.2204 l 2.4000 1,L15C e 2.6000 1.2013 1.35 2.8000 1.1847 '

1 '

3.0 a 1.1773

^  !.2000 1.1785 i~~  :.4000 1.1813

$ 3.6000 1.1856 ja1.30 3.8000 1.1888 4,oooo ,,,,og X 4.2000 1.1948 d

$ 4.4000 1.2010 ae< -

4.6000 1,2052 k1.25 ^

o i 5.0000 1,2090 8

5.2000 1.2080

% '! 5.4000 1.2099

**y ' : *

+ 5.0000 1.2233

$::;1.20

5. 8m0 1.2353 a*"

• 6.0000 1.2446

(. 3 '

g o, ;

,, ' 6.2000 1.2524 t/) -^

6.4000 1.2582 I

' I 6,6000 1.2618 j,j$ -

6.8000 1.2633 7.0000 1.2625 7.2000 1.2592

, j 7.4000 1.2535 i 3 7.6000 1.2452 1.10 , , , 7.8000 i.2343 i  ; 8.0000 1.2209

, , 8.2000 1.2045 i , j 8.4000 1.1863

, 8.6000 1.1706 1.05 , , ,, , , 8.8000 i.i??7

, j j , i j 9.0000 1.1769

~

, , , j 9.2000 1.1787

, j , t 9.4000 1.1795 1.00

, , i i 9.6000 1.1787 0 2 4 6 8 10 9.8000 1.1875 12 30,000 3.3993 BOTTOM CORE HEIGHT (FEET) TOP iO.2m i.2iO2 3o.4o0 ,,oooo 10.600 1.0000 10.800 1.0000 11.000 1.0000 11.200 1.0000 11.400 1.0000 FIGURE 6 11.600 1.0000 11.800 1.0000 12.000 1.0000 SEQUOYAll UNIT 1 CYCLE 6 RAOC

SUMMARY

OF MAX W(Z) AT 10000 MWD /MTU

• TOP AND BOTTOM '.5% EXCLUDED AS PER *ECH SPEC 4.2.2.0 Rev. 8.21912-00pm 9 M 10

^

1 t l l 1 l . .- COLR for Sequoyah Unit 1, Cycle 6 )

l TVA SEQUOYAlf UNIT 1 CYCLE 6 I .

SEPTEMBER 1991 h

{ ( HEIGHT MAA r- (FEET) W(2) 1.50 0.00000 1.0000 i O.20000 1.0000 O.40000 1.0000 l

- 0.60000 1.OOqO 1.45 0.80000 1.0000

- 1.0000 i.oOOO 1.2000 1.0000' 3 1.4000 1.0000 1.6000 1.0000 1.40 1.8000 1.2638 2.0000 1.2519 2.2000 1.2394 2.4000 1.2252 2.6000 1.2093 1.35 2.8000 1.1922 3.0000 3,iv85

.*'*. 3.2000 1.1767 N

• a 3.4000 1.1880 v .

3.6000 1.2016

^

3c130

• 3.80 1.2139 X

• 4.0000 1.2246 4.2000 1.2337

.C.

d *

, 4.4000 1.2400

• 4.6000 1.2458 ggj,pg e 4.8000 1.2493 o +* ,

• 5.0000 1.2485

-8

>- ' ' 5.2000 1.2527 5.4000 1.2689

^ ^

5.6000 1.28r4

$.; 1.20 5,8mO 1.3014

-/- 6.0000 1.3139

( 3 -,  ;

• 6.2000 1.3237 to ,,+ G.4000 1.3309 1,1$ 6.6000 1.3353 6.8000 1.3367 7.0000 1.3351 7.2000 1.3302 7.4000 1.3221 7.6000 1,3106 1.10 , 7.8000 1.2957 i B.0000 1.2777 8.2000 1.2557 i

] 8.4000 1.2319 i 8,6000 1.2141 1.05 , , 8.8000 1.20i2 l l 9.0000 1.1899 i 9.2000 1.1798 l 9.4000 1.1744 1 1.00

l i 9.6000 1.1711 0 2 4 6 8 10 12 9.8o00 i.1700 10.000 1.1743 BOTTOM TOP 10.200 1.1826 10.400 1.0000 iO.eOO i.OOOO 10.800 1.0000 11.000 1.0000 11.200 1.0000 11.400 1.0000 FIGURE 7 i1.600 1.0000 11.800 1.0000 12.000 1.0006 SEQUOYAll UNIT 1 CYCLE 6

~

RAOC

SUMMARY

OF MAX W(Z) AT 14000 MWD /MTU

• TOP AND DOITOM 15% EXCLUDED AS PER TECH SPEC 4.2.2.0 Rev. 8/23S12:00pm Page 10 of 10

. -. _ ._