ML20097D854

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Rev 0 to Sequoyah Nuclear Plant Unit 2,Cycle 6 Core Operating Limits Rept
ML20097D854
Person / Time
Site: Sequoyah 
Issue date: 03/18/1992
From: Lemons J
TENNESSEE VALLEY AUTHORITY
To:
Shared Package
ML20097D851 List:
References
NUDOCS 9206110167
Download: ML20097D854 (12)
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Text

'

N ENCLOSURE SEQUOYAH NUCLEAR PLANT UNIT 2 CYCLE 6 CORE OPE:lATING LIMITS REPORT f.;

REVISION 0 MARCH 18, 1992 (L36 920320 802) w:

fgg61ggl,gl0ggg e

A RECORD L36 920320 802 SEQUOYAH NUCLL.

PLANT UNIT 2, CYCLE 6 COFS OPERATING LIMITS REPORT REVISION O MARCH 18, 1992 Prepared 1%

M

/

3 -lb' 71 NdoIoar Fuel Engineering Date f

l Reviewed:

///7h h

3 'L3 4 b

/

Reactor EnginIering Supervisor Date Approved:

', i_ ; ;, a

.--l l N j..,, - ~

Technical Support Manager Dato b V6 31 g.,

K p~

t PORC Chairman

/

Da'te 1038U

~

COLR FOR SEQUOYAH UNIT 2, CYCLE 6

1. 0 ' -CQEE OPERATING Ll_M1TS REPORT

'This Core Operating Lim ~s Report (COLR) for Sequoyah Unit 2, Cycle 6, has been prepared An acctcdance with the-

.quirements of Technical Specification (TS) 6.9.1.14.

The TSs atfected by this report are listed belows-3/4.1.1.3 Moderator Temperature Coefficient 3/4.1.3.5 Shutdown Rod Insertion,imit 3/4.1.3.6. Control' Rod Insertion Limits 3/4.2.1 -

Axial Flux Difference 3/4.2.2 Heat Flur Hot Channel Factor 3/4.3.3 Nuclear Enthalpy Hot Channel Factor 2.0 OPERATING LIMITS The cycle-specific parameter limits for the specifications listed in Section 1.0 are presented in the following subsections. These limits have been' developed using the NRC-approved methodologies specified in TC 6.9.1.14.

-2.1 Moderator Temperature Coefficient (Specification 3/4.1.1.3)

( 3 / 4.1.1. 3 ]-

2.1.1 The moderator temperature coefficient (MTC) limits are:

The BOL/ARO/HZP-MTC shall be less positive than 0 Ak/k/*F (BOL limit). With the measured BOL/ARO/HZP-MTC more positive than

-1.2x10-5 Ak/k/*F (as-measured MTC limit). establish control

' rod withdrawal limits to ensure the MTC remains less positive than 0 Ak/k/*F for all times'in core life.

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

2.1.2-The 300 ppm surveillance limit is:

The measured 300 ppm /ARO/RTP-MTC should be less neg +1"o than or equal to -3.1x10-4 Ak/k/*F.

where BOL stands for Beginning of Cycle Life ARO stands for ALL Rods Out HZP stands for Hot Zero THERMAL POWER EOL stands for End of Cycle Life RTP stands for RATED THERMAL POWER Page 1 ot 11 l

1038U

2 COLR FOR SEQUOYAH UNIT 2, CYCLE 6 2.2 Ehutdown Rod Insertion Limit (Specif.lcation 3/4.1.3.5)

[3/4.1.3.5) 2.2.1 The shutdown rods shall be withdrawn to a position greater than-or

~

equal to 225 steps withdrawn.

2.3~

C2ntrol Rod Insertion I,imit (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 8hown in Figure 1.

2.4 Axial Flux Difference (Specitication 3/4.2.1)

[3/4.2.1) 2. 4.1 - The axial flux difference.(AFD) limits.are provided in Figure 2.

2.5 Heat Flux Hot Channel Factor - F (Z) (S ecification 3/4.2.2)

P 0

[3/4.2.2)

RTP Pg Fg(Z) 1

  • K(Z) for P > 0.5 P

RTP Yo g(Z) 1

  • F(Z) for P 1 0.5 5

-0.5 THERMAI. POWER where P = RATED THERMAL POWER _

RTP 2.5.1 Pg e.32 2.5.2 K(Z) is provided in Figure 3.

2.5.3 Note that the W(2) values required by TS SR 4.2.2.2 are provided in Figures 4 through 8.

This information is sufficient to deterrine W(Z) versus core heignt for all cycle burnups through the use of three point interpolation.

Page 2 of 11 1038U

.s.

COLR FOR SEQUOYAH UNIT 2, CYCLE 6 N

2.6 Huclear Enthalpy Rise Hot Channel Factqr - FAH (S ecification 3/4.2.3)

P

[3/4.2.3)

N RTP FAH 1 F6H * (1+PFAH * [1-P])

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

l Page 3 of 11 1038U i

r

COLR For Sequoyah Unit 2 Cycle 6

(.o9,231)

(.66,231) t r. n y wii u,,_ u g emi

~

- - (.0 0.2 2 5 )

(.62.226)

L**BANX B 200 R

0 (1.0.182) d B 160-f a

n k

S

~+ BANK C t 120 l

0 P

P

/

o 80 1**'--

S i

. BANK D t

i 40 0

O 0.2 0.4 0.6 0.8 1

(Fully inserted) Fraction of Rated Thermal F,wer FIGURE 1 Rod Bank Insertion Limits Versus Thermal Power Four Loop Operation Fully withdrawn reolon shall be the condition w here shu tdown and control ban ks are at a position within the interval of '225 and? 231 steps withdraw n, inclu sive.

Page 4 of 11

~

e COLR For Sequoyah-Unit 2 Cycle 6-120 i

110 m-

+

-+

(-15,100)

(6,100) 100 O

f go Unacceptable Unacceptable R

operation operation a

80 f

Acceptable

-O eration - -

d 70 P

[

60 e

r-50

(-3L,50)'

!(20, 0) m i

a

-4g P

30 o

W l'

e 20 r

f 10 o

1

, 40 20 -10 o

10 20 30 40 so l-Flux Dif ference (Al) %

I FIGURE 2 Axial Flux Difference Limits As A Function Of Rated Thermal Power Page 5 of 11 l'

COLR For Sequoyah Unit 2 Cycle 6 1.2 l

1.1 N

N O 0.9 r

$ 0.8 I

l- 0.7 Z

G o 0.6 h0.5-Core Height K(Z) 0.000 1.000 P 0,4 6.000 l 1.0 0 0~

o-10.000

0.940

(

0.3 12.000

0.925 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 11

TVA SEQUOYAII UNIT 2 CYCLE 6 COLR MARCH 1992 (V

1-Hei grit MAX 8-(Feet)

WtZ) 0.000 1.0000 I'N i

I j'

^

.ll; l

i I

0.200 1.0000 i

g

.d.

---l.-

0.400 1.0000

.i.

l 1

0,600 1.0000 j

0.800 1.0000 i

1.000 1.0000 i

l l

l l

1.200 1.0000 1,35 I

i 1

I 1.400 1.0000 1.600 1.0000 1

1. LOO 1.2337 1

~

2.000 1.9148 I

2.200 1.1958 I

2.400 1.1771 l'N 2.600 1.1584 2.800

1. "18 5 I

. n' 3.000 1.

272 o

o 3.200 1.1250 I

3.400 1.1257 o

4" 3.600 1.1282 4

1 3.800 1.1301 1.2$

4.000 1.1297 I

e 4.200 1.1320 0

o m

(

4.400 1.1365 4.000 1.1388

}

x "7-a 4.800 1.1411 4

7' 5.000 1.1436 i

o 5.200 1.1540

~~

i o

o*

5,400 1.1704

]

3 o

5.600 1.1868 j

5.800 1.2034 m

6.000 1.2177 3

1 6.200 1.2306 M

o E.400 1.2434 1.1$

6.600 1.2*i33 6.800 1.2614 n"

7.000 1.2669

'oo' 7.200 1.2729 1

7.400 1.2782 j

7.eoO 1.2814 1*10 8.000 1.2809 7.800 1.2833 8.200 1.2759 I

8.400 1.2688 i

~~~

G.600 1.2570 l

8.800 2518 9.o00 n.253e 1.05 g

a 9.200 1.2581 9.400 1.2574 9.600 1.2587 9.800 1.2597 10.000 1.2693

(

I I

I 10.200 1.2855 i

j,g 0

1 2

3 4

5 6

7 8

9 10 11 12 10.400 1.0000 10 500 1 0000 M KlQU (fET)

BOTTOM TOP 10.800 1.0000 11.000 i,o00o 1

FIGURE 4 11.200 1.0000 11,400 1.0000 11.000 1.0000 SEQUOYAII UNTT 2 CYCLE 6 11.8o0 i.0000 12.o00

1. 0mo RAOC

SUMMARY

OF MAX W(Z) AT 150 MWDMTU

  • TOP AND BOTIUM 157 EXCLUDED AS PER TEGI SPEC 4.2.2.0 Page ' of 11 Rev. 01,999210.

m

. ~ '

'TVA SEQUOYAH UNIT 2 CYCLE 6 COLR MARCil 1992 W

Height-MAX (Feet) w(2) 0.000 1 Oo00

^

1.40 g1

[

0.200 1.0000 I'

I !!!

I I

0.400 1.0000-0.600 1.0000 i 'l Ii 0.80o 1.oco0 gg y,

1.200 1.0000 I

_$II

~

!ii

! I 1.600 1.0000 l

1.400 1.0000 g,3 e!tI

j. l ti' 4

1.800 1.2809 2.000 1.2391

.l 11 2.200 1.2184 2.400 1.1967 o

il l

2.600 1.1765 1.,10

~--

~

2.800 1.1535-3.000 1.1405 3.200 1.1384 3.400 1.1369 l'

3.600 1.1339 o

3.8o0-1.1311 1.25 !!

, ev 4.000 1.1285 1

4.200 1.1288 l

m o

'~~~

' '~---

4.400 1.1309 N

K o

4.800 1.1330 4.600

~1.1320 i

o x

5.000 1.1350 U

I 5.200 1.t414 g1.20 ],l, 5.400 1.1525 o.

5.600 1.1680

'i i

y 85.800 1 1826 y

i 6.000 1.1947 3.

.g 6.200 1.2069 6.400 1.2177 m

II I

j,3 6.600 1.2270 l'

6.800 1.2349 "D

}

"g 7.000 1.2392 o

7.200 1.2441 l

7.800 1.2493 l

7.600 1.2509 l'

i 7.800 t.2518 1.10 i;

8.000 1.2484 j,

6 8.200 1.2455 8.400 1.2439 8.600 1.2479 8.800 1.2469 9.000 1.2485 9.200 1.2534 1.05 i

9.400 1.2551 I

9.600 1.2630 9.800 1.2760 10.000 1.2506 10.200 1.3045 l.

l

'00 1 0000 f

I'"o }

'^

3 4

5 6

7 8

9 10 11 12 10'.800 i

I 2

to 1.0000 M N M) to.soo 1.0000 11.000 t.0000 TOP 1

1. m FIGURE 5 BOTTOM 11.600 a.0000 l.

n.800 i.m SEQUOYAH UNIT 2 CYCLE 6 12.000 1.0000 RAOC

SUMMARY

OF MAX W(Z) AT 4000 MWD /MTU l-

' 19 AND BOTTUM 15% EXCLUDED AS PFR 'ECH SPFi' 412.0 f

l Page 8 of 11 i

Rev. O1m9210:30am

,a.

~

+.

TVA SEQUOYAH UNIT 2 CYCLE 6 COLR MARCH 1992 W

beight MAX (Feet)-

W( Z )

I*N

i;;

3..

!{j 0.000-1.0000 1

gg,j

jjj, O.200 1.0000

<1 O.400 1.0000--

..~I lI I

i 0.800 t.0000 1I l

.)

O.800 1.0090 i

1.000

- 1. oow

-1,35 f.200 1.0000 I'll II 1.400 1 o000 i

i ili 1.800 1.2785 1.600 1.0000

~

l:

jjj 2.000 1.2619

--gI Il i

l

((

}

2.200 1.2465 2.400 1.2314 I*M 2.600 1.2160 2.800 1.1993 3.000 1.1885 I

3.200 1.1847 i

3.400 1.1824 g

)

3.600 1.1786 1,25 3.800 t.1*/50

.i iI l

4.o00

'1.1706

.n$-

I o

4.200.

1.1689 n

o

.O o

4.400 1.1692 x

i.

4.600 1.1683

.j i

g 4.800 1.1664

'I G.000 1.1636 5lN 3-

<y

-l 5.200 1.1626 g

o o

5.40o 1.1691 e

o o

5.600-t.1824-m

.5 0

5.800 1.1948 5

m m-8 ooo 5.2052 6.200 1.2147

- 1.15 6.400 t.222c I

l 6.600 1.2290 I

6.800 1.2336 7.000 1.2363 7.200 1.2373 7.400 1.2354 1.10 7,600 1.2325 l

j l

7.8oo 1.2271 8.0o0 1.2178 8.200 1.2078 Il 8.400 1.1952 l

8.600 1.1817 l

g 6.800 1.1716 1.05 s.ooo t.1687 II 9.200 1.1678 lj l

9.400 1.1693 l---

g.g_

9.800 1,189C 9.600 1.1789

.P 10.000 1.2036

? fI l'

7 10.200 1.2213 g*g 0

1 2

3 4

5 6

7 8

9 10 11 12 10.4oc t.oo00 g g;gg p )

10.600 1.o000 to.800 t.o000 TOP

' oM 1 M0o BOTTOM FIGURE 6

11. 2m
1. wm 11,400 1.oGoo 11.600 1.00o0 SEQUOYAII UN'T 2 CYCLE 6 ti.a00 i.0ooo 12.0o0 t. moo RAOC SUMhiARY OF MAX W(Z) AT 7000 MWD /MTU
  • TOP AND BOTTOM 15% EXCLUDED r.S FER *ECH SPEC 4.2.2.0 Page 9 of 11 Rev. 0149921050am I

4

.j-9%, *

~

TVA, SEQUOYAH UNIT 2 CYCLE 6 COLR MARCH 1992 W

Height MAX (Feet) wiz)

'I' 8

i O.000 1.0000 i i, I,

0.200 1.0000-

!!,l I'

I 0.400

.1.0000 f}!'

II I

0.600 1.0000

.( l J ;

ltl jj

,i 0.800 1.0000

.j it!i ill it 1 0M 1~0000 l-1.35 1.200 1.00oo i

Iti t.400 5.0000 l

I fi l

1.600 1.0000 j

ll l

1.800 1.2827 l

2.000 1.2690 2.200 1.2568 t

It i

2.400 1.2447

.i

_. j y

):

ll 2.600 1.2333 2.800 1.2194

' '.r----,

3.000' 1,2105 E

l 3.200 1.2073-

[

3.400 1.2090 3.600 1.2078 lg j

o

. 1.25 Y

3.800 1.2c82 o

l+

I 0

{

4.000 1.2053

^

4.200 1.2038 o

88 4.400 1.2047 l

o o

x-4.600 1.2029

.j

-pgb 4.800 1.2013 1

'oo o, 5.000

.1.1963-

+

ggy o

4 (j

ll j

5.200 1.1921 g

u

.----~-"

5.400 1.1983 l

g.

5.600 1.2114

.II' o

S.800 1.2232 z

3

(

~

o 6.000 1.2330 85 g

6.200 1.2411 l

1.15 6.400 1.2462 6.600 t.2507.

I o

o 6.800

1. 2 5 3't
7. 0'4 1.2523 l

i

'o,,

7.200 1.2531 j

7.400 1.2437 11 I

7.60o 1.2359 1.10 ll 6

7.800 1 2242 8.000 1.2098 8.200 1.1923 I

8.400 1.1721

'I

'l I

8.600 1.1486 i

i}

['

il l

8.800 1.1341 1.05 9.ooo 1.1271 d.- I'!!

9.200 1.1229 I

I! Il

'.,.s :

9.400 1.1217

[

9.600 1.1291 g

i S.800 1.1345 10.000 1.1454

,g

__b 'I !

I 10.200 1.

  • t 2 4

-j 0

1 2

3 4

5 6

7 8

9 to 11 12 10 400 1 ovM C08E mon (RET) 10.000 1 0000 10.800 1.0000 11.000 1.0000 FIGURE 7 TOP 11.200 1.00oo BOTTOM.

11.400 i 0000 11.600 1.0000 L

SEQUOYAH UNIT 2 CYCLE 6 11.800 1.0000 12.c00 -

1.0o00 RAOC

SUMMARY

OF MAX W(Z) AT 10000 MWD /MTU

  • TOP AND BOTTOM 15% EXCLtJDED AS PER TEQi SPEC 412.0 Page 10 of l' I.

Rn 01/09M 10'.30am l

L

TVA SEQUOYAII UNIT 2 CYCLE 6 COLR

- MARCil 1992 h m

Height NAA (Feet) wt Z I

=

1.40 9

o.o00 1.0000 l

0.200 1.0000 I

Ii4 iii*

0.400 1.0000

4ii
i; i

i 0.600 1.0000 i

l;i; j

0.800 1.0000 i

1 j ',

j,'

}g3 1.000 1.0000 1.200 1.0000 1.35

.II I

1.400 1.0000 1:i 1.600 1.0000 l1ii {i!

t; 1.800 1.2728

j, gj i g,'.,

1 2.000 1.2593 I i II; "o

2.200 1.2459 iii ti?'

II i

(

2.400 1.2322 1.30 2.600 1.2180 2.800 1.2022 o

I I!

3.000 1.1927 ii11 0

3.200 t.1949

^

3,400 1.2072 l

ljl o

3.600 1.2183

, I

[*2$ l ' 'I !

o i

l

3.800 1.2269 1

u, lll!

til

.]""

4.000 1.2340 m

l lti; jjj 4.400 1.2438 4.200 1.2405 r.

gi9;

,j o

4.600 1.2451 g

x y

o

! !l g

4.800

  • .2463 I

ii i

5.000 1.2414 h I3 y 5.200 1.2437 g

3; jjq

,4 5.400 1.2604 I II II 5.600 1.2759 y

I i

lii;

I 5.800 1

.77 3

K"I jljj

[

6.000 t.

473 6.200 1.3056 y

g g

j j'

g o

1.15 6.400 1.3101 1

l1 IIII II 6.600 1.3132 I

l llll 7.000 1.3096 6.800 1.3122 l

4g 7.200 1.3027

1.

l!l!

l 7.400 1.2927 j

l ti Iiii I:

i>

7.600 1.2807 I.l0 7.800 1.2643 3

i i; 9

~

8.000 1.2462

.1 I Ii!.!

8.200 1.2234 h

I Illi

. 400 1.1985 ill ljij j

[

8.600 1.1792 jjjj jj;3 j

8.800 1.1679 1.05 9.000 1.1625 Illi I!!!

9,200 1.1566 i((

i!: 1

{ll 9.400 1,1501 i9; jjgi i

i 3.600 1.1451 l

! !I I!II il 9.800 1.1397 10.000 1.1402 l Ii iiiI

.i ll l

10.200 1.1454 I

O 1

2 3

4 5

6 7

8 9

10 11 12

'0 '00

'- 000 CORE ElGC (FEET)

'[,foo fooon I

TOP 11 M 1.3000 BOTTOM FIGURE 8 it.20c

i. m o 11.400 1 0000 11.600 1.0000 SEQUOYAII UNIT 2 CYCLE 6 11.800 1.00o0
12. m
1. m o RAOC

SUMMARY

OF MAX W(Z) AT 14000 MWD /MTU

  • TOP AND BOTTOM 15% EXCLUDED AS PER ECH SPEC 4.2.7.G Page 11 of 11 Rev. 01292195am 1

-

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