ML20212A736

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Rev 2 to Rbs,Cycle 7,COLR
ML20212A736
Person / Time
Site: River Bend Entergy icon.png
Issue date: 08/31/1997
From:
ENTERGY OPERATIONS, INC.
To:
Shared Package
ML20212A720 List:
References
NUDOCS 9710240220
Download: ML20212A736 (20)
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Text

_ . _ _ _ _ _ _ . . . _ . _ _

Pa041 of 20 RBS CYCLE 7 COLR Revision 2 -

J RNER BEND SYATION, CYCLE 7 CORE OPERATING LIMITS REPORT (COLR) l l

August,1997 i

i l l

PREPARED BY: I /O.7/7 Date: f//l / f7 I Respcnsible Engineer REVIEWED BY: ///r/Mur- O/J /4 ' ~

Date: OI//9 7 Review Engineer

\ r I

APPROVED BY: J/

Manager Safety & EIngineering k /077h Date:]Lhm[fff j

Analysis

~

APPROVED BY: o/o _ Date: 8////i7

. Director, Engineering j R'ver Bend Nuclear Station APPROVED BY: b Amt Date: f/<//17 '

[acilitlis% view Committee i

River Bond Nuclear Station l -

i 9710240220 PDR 971017 ADOCK 05000458 PDR

Page 2 of 20 RBS CYCLE 7 COLR

  • Revision 2 INTRODUCTION AND

SUMMARY

This report provides the values of the AVERAGE PLANAR LINEAR HEAT GENERATION RATE (APLHGR) limits, the core flow dependent MINIMUM CRITICAL POWER RATIO (MCPR) limits, MCPRp, the thermal power dependent MCPR limits MCPRp, the LINEAR HEAT GENERATION RATE (LHGR) limits, APRM Gain and setpoint information, and the REACTOR PROTECTION SYSTEM (RPS) response time for APRM thermal time constant for River Bend Station, Cycle 7 as required by Technical Specifications. Technical Specifications require these values be determined using NRC approved methodology and are established such that all applicable limits of the plant safety analysis are met.

l In some cases limits in the COLR differ from the limits in the core monitoring system. This is sometimes due to limitation iin the core l monitoring system to model the actual limits, in which cite the core monitoring limits may be more conservative than the Cf)LR limit. In other cases the limits in the COLR are presented in less detail than in the core monitoring system. When these situations exist the core monitoring limits will explained or be referenced by the COLR and will be made available to Operations.

Control Rods The River Bend core utilizes both GE original equipment and ABB CR-82M bottom entry cruciform contrcl rods. These Control Rod designs are discussed in more detail in reference 7.

1

Page 3 of 20 RBS CYCLE 7 COLR Revision 2 l TECHNICAL SPECIFICATION 3,2,1 I

POWER DISTRIBUTION LIMITS AVERAGE PLANAR LINEAR HEAT GENERATION RATE f APLHGR) t The limiting APLHGR value for the most limiting lattice (excluding natural j uranium) of each fuel type as a function of AVERAGE PLANAR EXPOSURE is given in Figures 1,2,3,4,5,6 and 7. These values were determined with the SAFER /GESTR LOCA methodology described in GESTAR II (Reference 1). Core location by fuel type is provided in Figure 12 and is the reference core loadir,g pattern in reference 3. These figures are used if *ttemate calculations are required. The limits of these

{ figures shall be reduced to a value of 0.87 times the two recirculation loop operation limit for GES and 0.79 times the two recirculation loop operation limit for GE11 when in single loop cperation (Reference 3).

The APLHGR limits in the core monitoring systern are in more detail than the limits that appealin the COLR due to there proprietary nature. ThG core monitoring system has APLHGR limits for each latilce in a bundle rather than listing only the most limiting value for the entire bundle (Reference 8). Reference 4 list these limits.

1 1

4 i

. . _ _ . . .. ._.--. - .__--. . ~ . - - - ..- _ - - - _ - . _ . .- _ . - -

Pa0e 4 of 20 RSS CYCLE 7 COLA Revision 2 TECHNICAL SPECIFICATION 3.2,3

POWER DISTRIBUTION LIMITS MINIMUM CRITICAL POWER RATIO (MCPR)

The MCPR limits for use in Technical Specification 3.2.2 for flow dependent MCPR (MCPRp) (Reference 3), power dependent MCPR (MCPRp)(Reference 3) are shown in Figures 8,9,10 and 11. These

, values were determined with the GEMINI methodology and GEXL-PLUS critical power ratio correlation described in GESTAR ll (Reference 1) and are consistent with a Safety Limit MCPR of 1.10.

Page 5 of 20 RBS CYCLE 7 COLR Revision 2 TECHNICAL RPECIFICATION 3.2,3  ;

POWER DISTRIBUTION LIMITS LINEAR HEAT GENERATION RATE (LHGR)

The LHGR limits for use in Technical Specification 3.2.3 are 14.4 kw/ft for GE8x8EB and GE11 (Reference 5). The GE8x8EB fuel consists of fuel types: GEBB PSSQB333-10GZ-120M-4WR 150-T, GE88 P8SQB334-10GZ-120M-4WR-150-T, GE88-P8SQB334-10GZ2-120M 4WR-150-T and GE88 P8SQB334-11GZ-120M 4WR-150-T. The GE11 (9x9) fuel consists of GE11 P9SUB354-14GZ-120T-146-T, GE11-P9SUB354-13GZ-120T-146-T and GE11-P9SUB353-10GZ-120T-146-T. Core location by tuel type is provided in Figure 12.

The core monitoring system has the LHGR limit as a function of exposure.

for differet, bundle types. According to GESTAR (Reference 1) the APLHGR limits provide protection of this limit. However, to be conservative, this limit is used in the core monitoring system.

Page 6 of 20 RSS CYCLE 7 COLR Revision 2 .

j TECHNICAL SPECIFICATION TABLE 3.3.1,1 1 The simulated thermal power time constant for use in Technical Specification Table 3.3.1.1-1, SR 3.3.1.1.14, is (Reference 6):

6 t 0.6 seconds. I i

The maximum simulated thermal power time constant for use in Technical Specification surveillance Table 3.3.1.1-1, SR 3.3.1.1.14 is:

6.6 seconds l

a i

l t

i 4

j

.i 1

4 f

d

Pace 7 of 20 RBS CYCLE 7 COLR '

Revision 2 TECHNICAL _RPECIFICATION 3.2,4 POWER DISTPIBUTION LIMITS Aversoe Power Ranoe Monitor (APRM) Gain and Setoolntg The APRM Gain and Setpoint information below was transferred from Technical Specifications as part of implementation of Improved Technical Specifications in October of 1995. For APRM flow biased simulated thermal power high scram trip setpoints and/or the flow biased neutron i

flux-upscale control rod block trip setpoint adjustment for the condition T <

1.0, the following relationships apply:

Two Recirculation Loop Operation Trio Setooint Allowable Value S s (0.66W + 48%)T S s (0.66W + 51%)T Sne s (0.66W + 42%)T Sn. s (0.66W + 45%)T Single Recirculation Loop Operation Trip Setooint Allowable Value S s (0.66W + 42.7%)T S s (0.66W + 45.7%)T Sne s (0.66W + 36.7%)T Sne s (0.66W + 39.7%)T where: S and Sne are in percent of rated thermal power, W = Loop recirculation flow as a percentage of the loop -

recirculation flow which produces a rated core flow of 84.5 million Ibs/hr, T is defined in Technical Specification Basis section B 3.2.4

Page 8 of 20 RSS CYCLE 7 COLR Revision 2 REFER M ER l

1) NEDE 24011-P A," General Electric Standard Application for Reactor i Fuel,"(latest approved version).

l

2) Letter, C.O. Thomas to J.S. Charnley, " Acceptance for Referencing of Licensing Topical Report," NEDE 24011 P A 6, Amendment 10, General l Electric Standard Application for Reload Fuel, May 28,1985.
3) 24A5188, Rev. 3 ' Supplemental Reload Licensing Report for River Bond i Station Reload 6/ Cycle 7' August 1997.
4) 24A5188AA, Revision 1 ' Lattice Dependent MAPLHGR Report for River Bond Station Reload 6 Cycle 7' August 1997.
5) FC# 818R46,' RIVER BEND RELOAD 6 DESIGN EXPOSURE CYCLE

SUMMARY

  • June 1995.
6) Letter, R.E. Kingston to G. W. Scronce, ' Time Constant Values for Simulated Thermal Power Monitor' GFP 1032 November 30,1995.
7) RBS USAR Section 4.1
8) Letter, J.S. Charnley (GE) to M.W. Hodges (NRC), Recommended MAPLHGR Technical Specifications for Multiple Lattice Fuel De. signs, March 9,1987

- - - - . - - . y ,e-e -,,--r. y- ,, , - - -

-e- ---y---- _.

1 Pape 9 of 20

)

RBS CYCLE 7 CoUt i Revision 2 FH3URE 1 MAXIMUM AVERAGE PLANAR LlHEAR HEAT GENERATION RATE (MAPLHGR) VERSUS AVERAGE PLANAR EXPOSURE GE8N.P8SQB33310GZ.120 M 4WR 150.T 14 IdLi j j [

l

, 1

  1. % i;  ;+
f  % '.

f

. 'A "

! 1 m I r I I lk 12 ". m

  1. e

,i 't.

I M

'e !

I M 1 7k

, g I 1k 10 - . .

l  % i  !

I 9 t

im%"

i g

1 i'm 8 '"..

k!

"F m

5 !I l.

5 0 10 20 30 40 50 AVERAGE PLANAR EXPOSURE (GWd/ST)

Pe0e 10 of 20 RSS CYCLE 7 COUt Revision 2 i

l MGURE 2 MAXIMUM AVERAGE PLANAR LINEAR HEAT GENERATION MATE (MAPLHOR) VERSUS AVERAGE PLANAR

! EXPOSURE GE85 P85QB33410GZ 120 M 4WR 150 T 1,

14 I I 4 m g i

/ j'(

13 7 't ,

'm' l

.? u ,

  1. Sm f 't ii l 12 .__,

7 ' %, '_

1 l '&

11 ,

-g _.___

I H k 10 t,

't' am g

t

i IE

, p__

g y;--_

u.

It--

, ( 7 l 8 l 3 ...

i l

I6 I

5 O 10 20 30 40 50 4

AVERAGE PLANAR EXPOSURE (GWd/ST) l

Jl-*ea e - , 4m.-a,es- -m+4asha4-Eman.Ms.-a-l.-- 'i--,,mh-=

-65 4 acta.4'me..m.wh.AW A .4.4-%hhA4h.MN--A--m4.--k-A4- .A4Mhw-w=--.4'-4 '

44 Pa0e 11 of 20 RBS CYCLE 7 Cout Revie66n 2 FIGURE 3 MAXIMUM AVERAGE PLANAR LINEAR HEAT i

GENERATION RATE (MAPLHOR) VERSUS AVERAGE PLANAR 1

EXPOSURE GE85 P88QB33410GZ2120 M4WR 150 T l

I4  ; ;O i

. g%:

F
I I h i

'k .

I 13 J I I E A .I M w

/ a g ,, "_

e 1

x. _

i

. 1

- 1; r i g ]

? i'd a .

I E 11 .

a' 10 ,.

s

m i

tE t

a .

i:

' u.

t.

E  ;

6 5

O 10 20 30 40 50 AVERAGE PLANAR EXPOSURE (GWd/RT)

PeGe 12 of 20 RSS CYCLE 7 COUt Revlolon 2 FIGURE 4 MAXIMUM AVERAGE PLANAR LINEAR HEAT GENERATION RATE (MAPLHGR) VERSUS AVERAGE PLANAR )

EXPOSURE GE85 P88QB33411GZ 120 M 4WR.150 T 14

- 4-A r

1

%lk i  :

' I 13 _ 'L.

l  %'

  1. L

'i' 12 .1 _ u iI '

i l "

l  %'

l11 ' m

/ ,..

k

>= '

i 10 k "

9 m b

t 9 ".

u, 1 8 '

t _ _

L i4 -

! < i

.\

'a j'

(%' *:= q~t l6 5 '

~+

0 10 20 30 40 50 AVERAGE PLANAR FXPOSURE (GWd/ST)

Page 13 of 20 RSS CYCLE 7 COLR Revision 2 FIGURE 5 MAXIMUM AVriRAGE PLANAR LINEAR HEAT GENERATION RATE (i,4APLHOR) VERSUS AVERAGE PLANAR EXPOSURE GE11.P98UB35414GZ 120T 144 T 14 .

i i i

! i 13 2

.m -

- ,L 12 . . ';

7 .

I  %

s

'u i1 11  %

'i

't H  %

10 h _

9 , .

L k'

i . i

-8 '%,L 1 .

Em

%lk I

h .M. kk

~\i 5 ','

3 ,

6 5

0 10 20 30 40 50 60 AVERAGE PLANAR EXPOSURE (GWdIST)

Page 14 of 20 RSS CYCLE 7 CoUt l Revision 2 l FIGURE 8 MAXIMUM AVERAGE PLANAR LINEAR HEAT ,

GENERATM)N RATE (MAPLHGR) VERSUS AVERAGE PLANAR EXPOSURE GE11 P98UB354130Z 120T 144 T J

1 , ,I ,

t 13 i

i . -.

p L j JFI 1L

12 _ .

\ ,

! u I

1 1 -

' 11 _

1 .

) > L l 10 \ "

i L.

5.

s-"

9 , .

4 e

1.

%m

, .m o

3 g8 ', .

. i I

3 m N 7L

( 7 B '

s '

4

6 a

1 1 1 5

j 0 10 20 30 40 50 60 i AVERAGE PLANAR EXPOSURE (GWd/ST) i e

d

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

. e -.-A.m.,%h+ m-eam;_w._,-+.-e-_,..--ai -*a-----e=A h.-- .-#*.- "4-.a1se+ aA-- 4-*--m- A--4---3---4,.M- 4---4D--.**aL4 - _A,s.S4 A- - --J+h. .----A-.w4...J..--,--..-hJi.e.,.

Pa0e 15 of 20 RBS CYCLE 7 COLR l Rewalon 2 FIGURE 7 MAXIEUM AVERAGE PLANAR LINEAR HEAT GENERATION RATE (MAPLHGR) VERSUS AVERAGE PLANAR EXPOSURE GE11.P95U535310GZ 144 T 4

14 - -

1 l l tf

~ '

i i  ! ,

i 13 .

- i l _

l 7 't

  1. i t 12 . _

1 E

I 11

, 1 -

m 1k 10 T'

L i-9 , m

' emme

'S'

\.

a. 8 "

\t I h L 7

' ' ' (,

4  %

l T .

l. '

I i 5 0 10 20 30 40 50 60 l AVERAGE PLANAR EXPOSURE (GWd/ST) 1 1

Psee 18 (f 20 R8S CYCLE 7 COLA Revision 2 FIGURE 8 OPERATING LIMIT MCPR (MCPRr)

VERSUS CORE FLOW FOR EXPOSURES LESS THAN OR EQUAL TO EOC 3350 1.800 . . . ,i 1 . .

I I 1 I I I I I

(25.1.735) --

INRui [:130.1.7351 ~ -

1.700 _N.,

1 g :__ -

w 4 i40.i. 0.i:

,,, , {

x

\

3<

',(

1.500 .;7," *GE8

  • GE11 h['lIb 14x sw< on L

1.400  ;

t 1 ~

i-

-- (107.1.240G 1.300 '.

ts4.s2.1.as0) _ _

it i -

(89.03.1.260) (107.1.250121 1.200 ____

1.100 I

-' i 1.000 20 30 40 50 60 70 80 90 10s 110 120 CORE FLOW (W), % OF RATED CORE FLOW

Page 17 of 20 j RES CYCLE 7 COLA 1

neMon'2 4 4 '

I j FIGURE 9 OPERATING LIMIT MCPR (MCPR,)

1 VERSUS CORE FLOW FOR EXPOSURES i

GREATER THAN EOC 3350

1.so0 x . ,.-

i i i3i 1  : 128,1.7361 1

i -_ EEE [:t30,1.7361 3

J 1.700 ,

f t i =

i

! I t i

1.600 ('

m I' ' 0 8 8 .

) n 1

a j 1.500 '

  • GE8 '

\ . *GE11 g -

! s

! 't

, 1.400 , ,

'n,. I E _

(107,1.320)  :

, i.

, -179.44,1.3201 I m - -

1.300 '

1, l i<

j '

m _

l 100.03.1.260) (107.1.260) 22 l 1.200 4

l 1.100

__w i

l 1.000 20 30 40 50 60 70 80 90 100 110 120 CORE FLOW (W), % OF RATED CORE FLOW i,

l l

l' s.._.~ , , - - _ . . _ . - _ _ - _ - _ _ , , _ _ , _ _ - - . . _ , . .

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

.i Page 18 of 20

) R88 CYCLE 7 COLR 3

Revision 2 e

FIGURE 10 OPERATING LIMIT MCPR (MCPR,)

i VERSUS THERMAL POWER FOR EXPOSURES i

LESS THAN EOC 3350 1.80 . ..,

1 i

IlllI  !

,' i_

I i 1 I

4o,1.758)

, I (25,1.788)

I ~

g ,70 ,

1

~

i t (4o,1.614) '----

4 1.60 .

, w

, ,6.

I L

,0 ',

  • GE8

!(7014e1) ,.

~

  • GE11 i -

~

  • 1.40 (70,1.367) i k l A 1.30 (100,1,2 :01 -- +
(se.47,t.2 eo t _ r- l l  ! h o l (s7.oe.i.2soi
:: ::lioo.t.2soid

_. , , , , , .y l 1.20 '

l i

i f

1.10 T

l 1.00 20 30 40 50 60 70 80 90 100 110 120 THERMAL POWER, % OF RATED THERMAL POWER l

.i Page 18 of 20 l l RBS CYCLE 7 COLR l l Revision 2 l 1 \

j FIGURE 11 OPERATING UMIT MCPR (MCPR,)

VERSUS THERMAL POWER FOR EXPOSURES I

GREATER THAN EOC 3350 1.80 ,

4  ! I I I i i i

40,1,758) i (25,1.768) l 3

' l

, 1,70 ,

+

~

1 i t (40.1.014)

, 1.60 , i

=, .

, w

' ,m w

l 1 7L 4 7L I i j 1.50 ' ,= (70,1.4st) *GE8

)  ! *GE11 i

A A

i 1.40

)

i

~

j ., 1:2:(70,1.357) i Y (100,1.320) ~22:

~~~

, (79.36,1.320) t .

1.30 m

. 5m

~'

i 4m i (57.04.1.2601:ZZ 2:(100,1.2605222 j , , ,__ -.

1.20 i

I l

1.10 y l

1 1.00

) 20 30 40 50 60 70 80 90 100 110 120 THERMAL POWER, % OF RATED THERMAL POWER 1

k

Page13of so RSS CYCLE 7 COUt Revision 2 MOURE 12 REFERENCE CORE LOADING PATTERN I

,8 mommmemo ll mMMMMMMMo

mMMMMMMMMMo
mMMMMMMMMMMMo
MMMMMMMMMMMMM l:-mM M M M M M M M M M M Mi%
8 M E! M M M M M M M M M M M s
sHMMMMENEMMMMME .

l:: 8 M M M M M M M M M M M M M 8

!  ::-

  • M M M M M M E ! M M M M M M S ll MMMMMMMMMMMMM
*MMMMMMMMMMMS

': "HMEMMMMMMS 2

  • MMMMMMMS

@@@@[@@@

l l l l l l l l l i .i,ini.niri.nununnnunni......nnu Fuel %

A4E48485Q8333-10GZ-120M-4WR-IST (Cycle 4)

B= Gell-P95UB3W14GZ-120T-16T E=GE88-Pt1Q83W10GZ-120M-4WR-lWT (Cyat 5)

(Cycle 7)

C= Gell-P95UB3W13GZ-1207-14T F=GE48-P85QB3W10GZ2-120M-4WR-150-T (Cycle on (Cycle 7)

D= Gell-P95UB35bl007el20T-14T G=GE88-P55Q83SilGZ-120M-4WR-lWT (Cycle 6)

(Cycle 7)

--

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