ML20203D665

Rev 2 to 970044, Operating Limits Rept (Olr) for Braidwood Unit 1 Cycle 7

ML20203D665
Person / Time
Site:	Braidwood
Issue date:	12/09/1997
From:	COMMONWEALTH EDISON CO.
To:
Shared Package
ML20203D644	List: ML20203D641 ML20203D665 ML20203D753 ML20203D772
References
NDIT-970044, NDIT-970044-R02, NDIT-970044-R2, NUDOCS 9712160257
Download: ML20203D665 (12)

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NDIT 970044 Rev.2 j Page 2 of 12 OPERATING LIMITS REPORT (OLR) for BRAIDWOOD L* NIT 1 CYCLE 7 1.0 OPERATING LIMITS REPORT This Operating Limits Report (OLR) for Braidwood Station Unit 1 Cycle 7 has been prepared in accordance wrth the requirements of Technical Specification 6.9.1.9.

l The Technical Specifications affected by this report are listed below: l 3/4.1.1.3 Moderator Temperature Coefficient 3/4.1.3.5 Shutdown Rod Insertion Limit 3/4.1.3.6 Control Rod Insertion Limits 3/4.2.1 Axial Flux Difference 3/4.2.2 Heat Flux Hot Channel Facto-3/4.2.3 Nuclear Enthalpy Rise Hot Channel Factor 2.0 OPERATING LfMITS 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 Technical Specification 6.9.1.9.

2.1 Moderator Temoerature Coefficient (Specif. cation 3/4.1.1.3) 2.1.1 The Moderator Temperature Coefficient (MTC) limits are:

a. The BOUARO/HZP-MTC shall be less positive than +3.5 x 104 ok/k/*F.

b. The EOUARO/RTP MTC shall be less negative than -4.1 x 10" ak/k/*F.

2.1.2 The EOUARO/RTP MTC Surveillance limit is:

The 300 ppm /ARO/RTP-MTC should be less negative than or equal to 3.2 x 10" 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 9712160257 971209 PDR ADOCK 05000456 P PDR

ND'T 970044 Rev.2

/ Page 3 of 12 OPERATING LIMITS REPORT (OLR) for BRAIDWOOD UNIT 1 CYCLE 7 2.2 Shutdown Rod insertion Limit (Specification 3/4.1.3.5) 2.2.1 All shutdown banks shall be withdrawn to at least 228 steps.

2.3 Control Rod Insertion Limits (Specification 3/4.1.3.6) 2.3.1 The control banks shall be limited in physicalinsertion as shown in Figure 1.

2.4 Axlal Flux Difference (Specification 3/4.2.1) 2.4.1 The AXfAL FLUX DIFFERENCE (AFD) target band is +3,-12% of the target flux difference.

2.4.2 The AFD Acceptable Operation Limits are provided in Figure 2.

NDIT 970044 t Rev.2

, ,/ Page o of 12 f OPERATING LIMITS REPORT (OLR) for BRAIDWOOD UNIT 1 CYCLE 7  !

2.5 Heat Flux Hot Channel Factor (Specification 3/4.2.2) 2.5.1 Fo(Z) s [F$"/P][K(Z)] for P > 0.5 4

Fo(Z) s [F$"/0.5][K(Z)] for P s 0.5 f

( where: P = the ratio of THERMAL POWER to RATED THERMAL POWER I

F5" = 2.60 ,

K(Z) is provided in Figure 3. .

2.5 2 Fh = fy'[1 + 0.2(1 - P)]

fy' limits within specified core planes shall be:

For Core Life from greater than or equal to O MWD /MTU to less than or equal to 6.000 MWD /MTU:

a. For the lower core region from greater than or equal to 0% to less than or equal to 50%:

1) fy's 3.119 for all core planes containing bank *D" control rods i

2) fy's 1.854 for all unrodded core planes

b. For the upper core region from greater than 50% to less than or equal to 100%:

1) fl's 2.251 for all core planes containing bank "D" control rods

2) F"l's 1.902 for all unrodded core planes '

For Core Life from greater than 6.000 MWD /MTU to End of Core Life:

c. For the lower core region from greater than or equal to 0% to less than or equal to 50%:

l.

1) F"J's 3.119 for all core planes containing bank "D" control rods

2) F"l" s 1.854 for all unrodded core planes

d. For the upper core region from g* eater than 50% to less than or equal to 100%: .

1) F"," s 2.251 for all core planes containing bank "D" control rods

2) F"l* s 1.923 for all unrodded core planes i

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

~

NDIT 970044 Rn.2  !

, ,, Page 5 of 12 OPERATING LIMITS REPORT (OLR) for BRAIDWOOD UhTT 1 CYCLE 7 2.5.3 A plot of [Fo(z)

• Pa,) vs Axial Core Height for burnups greater than or equal to 0 1 MWD /MTU and less than or equal to 6,000 MWD /MTU is provided in Figure 4 and Table 1 contains the data plotted in Figure 4.

A plot of [Fo(z)

• Par.) vs Axial Core Height for burnups greater than 6,000 MWD /MTU to )

End of Core Life is provided in Figure 5 and Table 2 contains the data plotted in Figure 1 5.

l l

2.6 Nuclear Enthalov Rise Hot Channel Factor (Specification 3/4.2.3)  !

F1 s F$4'[1.0 + PFm(1.0. P)]

where: P = the ratio of THERMAL POWER to RATED THERMAL POWER F$!' = 1.70 PFm = 0.3 I

l l _ _ - _ _ _ -

. _ _ _ _ . - . _ . . - _ _- _ . . . . _ _ _ _ _ _ _ _ _ _ _ _ . _ . _ __ . _ _ . . _ = _ _ .. _ - _ _ _ _ . _ . _

7 Rev.2

, Page 6 of 12 l

OPERATING LIMITS REPORT (OLR) for BRAIDWOOD UNIT 1 CYCLE 7 l

Figure 1: l Control Bank insertion Limits Versus Percent Rated Thermal Power (29%,228) (79%,228) m

/

/

/

/

BANK B l

, , y (100%,161)

(0%.162) l 140 ,

iE.

k120 / j BANK C j /

0

100 / /

i 6, / /

BANK D j 60 - / /

l(0%. 47) l 20 /

l l (30%,0) l ,

l 0 -

0 to 20 30 40 50 60 70 80 90 100 Relative Power (Percent)

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

. NDIT 970044 l Rev.2 l Page 7 of 12 l OPERATING LIMITS REPCAT (OLR) for BRAIDWOOD UNIT 1 CYCLE 7 FIGURE 2: Axial Flux Difference Limits As A Function of Rated Thermal Power P

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Figure 3: K(Z)- Normalized Fo(Z) As A Function of Core Height ,

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(12.0. 0.925) o 0.9

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1 7 8 9 10 11 12 ""'!  :

BOTTOM CORE HEIGHT (FT) yop ,

r r

g- -, -- ~< - - -. - ' - w .w- -, # ~

Figure 1: FQ(Z)*P versus Core IIcight (0<Bil<6,000 MWD /MTti) g 4 g (6 0, 2.60) i 2 MB  ;', --

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-m-Fxy Limit Analysis Points

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CORE IIEIGIIT(FT)

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Figure 5: FQ(Z)"P versus Core IIcight (6000 MWD /MTU<HU<EOI.)

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NDIT 970044 Rev.2

, ,- Page 11 of 12 i

OPERATING 1.IMITS REPORT (OLR) for BRAIDWOOD UNIT 1 CYCLE 7  ;

Table 1: [Fe.f r)

• P.J vs Axial Core Height (OtBUs6.000)

FQ Spit Core Height Max Fa x P UMIT 0.2504-- 0.7942:l 2.6000-00.6259 .

41.9451: 12.6000 L "0.8763, 2.3491 9 62.6000 11.1267; 32.5118i - . ' , 2.60(D

1.3771n ' i 2.5734 : J 2 6000 -

k.il.6275a.m 222.5999 cu wa2.4000,aa 1.8778 2.5900 2.6000 2.1282 2.4052 2.6000 2.3786 2.5276 2.6000 2.6290 2.5287 2.6000-2.8794 2.4992 2.6000 3.1297 2.4651 2.6000 3.3801 2.4304 2.6000 3.6305 2.4055 2.6000 3.8809 2.2112 2.6000 4.1313 2.3848 2.6000

4.3816 2.3827 2.6000 4.6320 2.3721 2.6000 4.8824 2.3596 2.6000 5.1328 2.3491 2.6000 5.3832 2.3422 2.6000 5.6335 2.1888 2.6000 5.8839 2.4419 2.6000 6.1343 2.3666 2.5956 6.3847 2.3901 2.5875 2.4218 2.5794 6.6351 6.8854 2.4498 2.5712 7.1358 2.4587 2.5631 7.3862 2.3271 2.5549 7.6366 2.5106 2.5468 7.8870 2.5210 2.5387 8.1373 2.5250 2.5305 8.3877 2.5216 2.5224 8.6381 2.5103 2.5143 8.8885 2.4545 2.5061 9.1388 2.3660 2.4980 9.3892 2.4583 2.4899 9.6396 2.4475 2.4817 9.8900 2.4593 2.4736 10.1400 2.4622 2.4654 110.3910.

2.4387 i ~ T2.4573 "

10.6410' .:2.3019) :22.4492:

10.8920 g (2.2367;_  ; 2.4410 .

-7 11.1420 5E  : 2.1426;l 82.4329j y 1.83484 .

11.3920(

~

$2.4248 11.7680 . 0.8126 ;2.4125 Unshaded area shows surveillance region.

Shaded area (top and bottom 15%) is ignore

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

NDIT 970044 ,

~*

Rev.2 l Page 12 of 12 e .

OPERATING LIMITS REPORT (OLR) for BRAIDWOOD UNIT 1 CYCLE 7 Table 2: IFgr)

• Pul vs Axial Core Heirht #6000<BusEOL)

Fq SPIL Core Height Max Fa x P UMIT '

w:- 0.2604 #. .:0.7942 . 2.6000 l.9451 O.6259 > ?2.6000

< 0.8763 i2.3491 ?2.6000

' y 1.1267 . _.3 12.5118 T2.6000 1 11.3771 J ' ' & 2.5734 W :2.6000 a a d 1 6275 au.w2.5989 an2.6000 1.8778 2.5900 2.6000 2.1282 2.4052 2.6000 -

2.3786 2.5276 2.6000 2.6290 2.5287 2.6000 2.8794 2.4992 2.6000 3.1297 2.4651 2.6000 3.3801 2.4304 2.6000 3.6305 2.4048 2.6000 3.8809 2.2001 2.6000 4.1313 2.3605 2.6000 ,

4.3816 2.3481 2.6000 4.6320 2.3510 2.6000 4.8824 2.3068 2.6000 5.1328 2.2978 2.6000 5.3832 2.3422 2.6000 5.6335 2.1888 2.6000 5.8839 2.3651 2.6000 6.1343 2.4148 2.5956 6.3847 2.4638 2.5875 6.6351 2.5047 2.5794 6.8854 2.5703 2.5712 7.1358 2.5462 2.5631 7.3862 2.4753 2.5549 7.6366 2.5159 2.5468 7.8870 2.5216 2.5387 8.1373 2.5207 2.5305 8.3877 2.5128 2.5224 8.6381 2.5136 2.5143 8.8885 2.4730 2.5061 9.1388 2.3915 2.4980 9.3892 2.4849 2.4899 9.6396 2.4516 2.4817 9.8900 2.4593 2.4736 10.1400 2.4622 2.4654 S 10.3910 '

'"7 2A387 ' ~"" ~5 2.4573

10.6410  ; 2.3019 2.4492 s J10.8920 12.2367 . f 2.4410 W11.'1420 12.1469 E 2.4329 M ' 511.3920 '

+

21.8348 o ' 7 2.4248 nliJ680 '

60.8126 '2.4125 Unshaded area shows surveillance region.

Shaded area (top and bottom 15%) is ignore

y Braidwood Unit 2 Cycle 7 Operating Limits Report Revision 1 (superseded by Revision 2)

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