ML20059J874

Rev 0 to Topical Rept 099, TMI-1 Cycle 10 Colr

ML20059J874
Person / Time
Site:	Three Mile Island
Issue date:	10/08/1993
From:	Bond G, Jaffe R, Nelson M GENERAL PUBLIC UTILITIES CORP.
To:
Shared Package
ML20059J859	List: ML20059J858 ML20059J874
References
099, 099-R00, 99, 99-R, NUDOCS 9311150087
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TMI-1 Cycle 10 Core operating Limits Report TOPICAL REPORT 099 Rev. 0 BA Number 135400 TMI-1 Cycle 10 Reload. Task Force october 1993 APPROVALS:

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originator

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Date ewW ulrIn Cycl

' Reload Task Chairman D' ate '

7V K~

f o/ 8 /93 Manager, TMI Fuel Projects Date y )( % _

$r GP.G oan to/gf93 Director, Nuclear Analysis & Fuel Date J(dd% ide/n

/ M t 1 /2 D j3'-

tD{8/93 Plant RevieQ Group Date This COLR is Effective as of : Cycle 10 Initial Criticality v

9311150087 931107 0

PDR ADOCK'05000289 N

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TR 099 Rev. O Page 1 of 41 ABSTRACT This Core Operating Limits Report (COLR) has been prepared in accordance with.

the requirements of THI-l Technical Specification 6.9.5.

The core operating limits were generated using too methodologies described in References B through 27 and were documented in References 1 through 3.

The information in this COLR was reviewed for use at THI-1 in References 4 through 7.

The Full Incore System (FIS) operability requirements contained within describe the number and location of Self-Powered Neutren Detector (SPND) strings that must be operable in order to monitor imbalance and quadrant tilt using the FIS.

Quadrant tilt limits for FIS, out-of-core detector (OCD) system and minimum incore system [ MIS) are given in Table 1.

Table 2 is discussed below with Figure 7.

Rod position limits are provided in Figures 1 to 3 to ensure that the safety criteria for DNBR protection, LOCA kw/ft limits, chutdown margin and ejected rod worth are met.

Imbalance limits for FIS, DCD and MIS are given in Figures 4 to 6.

COLR Figures 1 through 6 may have three distinctly defined regions:

l.

Permissible Region 2.

Restricted Region 3.

Not Allowed Region (Operation in this region is not allowed)

Inadvertent operation within the Restricted Region for a period not exceeding i

four (4) hours is not considered a violation of a limiting condition for operation. The limiting criteria within the Restricted Region are potential ejected rod worth and ECCS power peaking. Since the probability of these accidents is very low, especially in a four (4) hour time frame, inadvertent operation within the Restricted Region for a period not exceeding four (4) hours is allowed.

COLR Figure 7 indicates the LOCA limited maximum allowable linear heat rates as a function of fuel rod burnup and fuel elevation for Mark BB and Mark B9 fuel.

Bounding values for monitoring these limits for the current cycle in terms of cycle burnup and axial detector levels are listed in Table 2.

COLR Figuro 8 provides the Axial Power Imbalance Protective Limits (APIPL) that preserve the DNBR and Centerline Fuel Helt design criteria.

COLR Figure 9 provides the Protecticn System Maximum Allowable Setpoints for Axial Power Imbalance which combine the power / flow and error-adjusted axial imbalance trip setpoints that ensure the APIPL of Figure 8 are not exceeded.

D

4 n-TR 099 Rev. O Page 2 of 41 contains operating limits not required by TS, but monitored by the Process Computer Nuclear Applications Software as part of the bases of the required limits and setpoints. These include the core minimum DNBR and the Maximum Allowable Local Linear Heat Rate Limits. contains the bases descriptions of the Power-to-Flow Trip Setpoint to prevent violation of DNBR criteria and the Design Nuclear Power Peaking ",)

Factors for axial flux shape ( F"y) and hot channel nuclear enthalpy rise (F t that define the reference design peaking condition in the core.

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TR 099 Rev. O Page 3 of 41 l

TABLE OF CONTENTS fl.91 1

Abstract 4

References Full Incore System (FIS) Operability Requirements 6

7 Table 1 Quadrant Tilt Limits Table 2 Core Monitoring System Bounding Values for 8

LOCA Limited Maximum Allowable Linear Heat Rate E

Figure 1 Error Adjusted Rod Insertion Limits 9

4 Pump Operetion j

Figure 2 Error Adjusted Rod Insertion Limits 12 3 Pump Operation Figure 3' Error Adjusted Rod Insertion Limits 15 2 Pump Operation Figure 4 Full Incore System Error Adjusted 18

[

Imbalance Limits Figure 5 Out-of-Core Detector System Error Adjusted 23 l

i Imbalance Limits Figure 6 Minimum Incore System Error Adjusted Imbalance Limits.

28 ~

Figure 7 LOCA Limited Maximum Allowablo Linear Heat Rate 33 Figure 8 Axial Power Imbalance Protective Limits 35 Figure 9 Protection System Maximum Allowable Setpoints for Axial 36 Pntat-Imbalance.

i Operating Limits Not Required by Technical 37 Specifications

! DNBR-related Bases Descriptions 39 t

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TR 099 Rev. O Page'4 of 41

References:

Main Body 1.

BAW-2187 Rev. O, "Three Mile Island Unit 1 Cycle 10 Reload Report,"

May 1993.

2.

BWFC Doc. No. 86-1223246-00, "TMI-1 Cycle 10 Limits & Setpoints," August 1993.

3.

BWFC Doc. No. 62-1224552-00, " Power Escalation Test Specification TMI-1 Cycle 10," August, 1993.

4.

GPUN Safety Evaluatien 135400-017, Rev. 1, *TMI-1 Cycle 10 Reload l

Design," 10/8/93.

5 5.

GPUN Safety Evaluation 135400-013, Rev. O,

" Tech Spec LOCA Limit Changes," June 28, 1991.

6.

GPUN Safety Evaluation 135425-006, Rev. O, " Tech Spec 6.9.5.2 Reference to BAW-10179P (TSCR 225)," May 3, 1993.

t 7.

GPUN Safety Evaluation 135400-019, Rev. O,

" Removal of Axial Power Imbalance Protective Limits and Setpoints from TS to COLR," September 1993.

Methodoloov 8.

BAW-10122A, Rev. 1, " Normal Operating Controls," May 1984.

9.

Letter from J. H. Taylor (B&W) to J. A. Norberg (NRC), " Extended Lifetime Incore Detector Error Allowances," April 21, 1988, JHT/88-28.

10.

BWFC Doc. No. 86-1172640-00, " Detector Lifetime Extension Final Ruport i

for TMI-1," September 1988.

11.

GPUN Safety Evaluation 000622-001, Rev. 1, " Control Rod API and RPI 24 Month Cycle Extension," April 16, 1992.

12.

BAW-10116-A, " Assembly Calculations and Pitted Nuclear Dats," May 1977.

13.

BAW-10118A, " Core Calculational Techniques and Procedures," December 1979.

14.

BAW-10119A, " Power Peaking Nuclear Reliability Factors," February 1979.

15.

BAW-10120P-A, " Comparison of Core Physics calculations with Measurements," March 1978.

I 16.

BAW-10180A, Rev. 1, "NEMO-Nodal Expansion Method Optimized," March 1993.

17.

BAW-10141P-A, Rev.

1,

" TACO-2 Fuel Pin Performance Analysis," June 1983.

18.

BAW-10162P-A, " TACO-3 Fuel Pin Thermal Analysis Computer Code," November 1989.

s 19.

BAW-10184P-A, "GDIACO, Urania-Gadolinia Thermal Analysis Code,* May 1992.

=

s.

D p

7 TR 099 Rev. O Page 5 of 41 References (continued):

20.

BAW-10103A, Rev. 3, "ECCS Analysis of B&W's 177aFA Loweret Loop NSS,"

July 1977.

21.

BAW-1775, " TACO Loss-of Coolant Accident Limit Analysis for 177-FA l

t Lowered Loop Plants," February 1983.

22.

BAW-1915P-A,." Bounding Analytical Assessment of NUREG-0630 Models on LOCA kw/ft Limits With Use of FLECSET," November 1988.

23.

BAW-10104P-A, Rev.

5, "B&W ECCS Evaluation Model,"-November 1988.

9 24.

BAW-10179P-A, Rev. O, " Safety criteria and Methodology for Acceptable cycle Reload Analyses," February 1991.

j i

25.

BAW-2149-A, " Evaluation of Replacement Rods in BWFC Fuel Assemblies,"

December 1991.

l

~

26.

BAW-10143P-A, "BWC Correlation of Critical Heat Flux",-April 1985.

27.

BAW-10156A "LYNXT2 Core Transient. Thermal Hydraulic Program", February l

1986.

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'I' TR 099 Rev. O Page 6 of 41 Full incore System (FIS)

Operability Requirements e

The Full Incore System (FIS) is operable for monitoring axial power imbalance provided the number of valid Self Powered Neutron Detector (SPND) signals in any one quadrant is not less than 75% of the total number of SPNDs in the quadrant.

Quadrant SPNDs 75%

WX 85.75 64.5 XY 99.75 75.0 YZ 89.25 67.0 ZW 89.25 67.0 e

The Full incore System (FIS) is operable for monitoring quadrant tilt provided the number of valid symmetric string individual SPND signals in any one quadrant is not less than 75% (21) of the total number of SPNDs -

in the quadrant (28).

Quadrant Symmetric Strings WX 7,9,32,35 XY 5,23,25,28 YZ 16,19,47,50 ZW 11,13,39,43 Source Doc.:

B&W 86-1172640-00 Referred to by:

Tech. Spec. 3.5.2.4.a and 3.5.2.7.a

,.e Table 1 Quadrant Tilt Limits Steady State Limit Steady State Limit Maximum Limit 15% < Power <_50%

Indicated Power > 50%

Indicated Power > 15%

Full Incore System (FIS) 6.83%

4.20 %

16.8%

Out-of Core Detector System (OCD) 4.05%

1.96 %

14.2%

Minimum incore System (MIS) 2.80 %

1.90 %

9.5%

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%." o -

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Source Docs.:

B&W 86-1223246-00 3

Referred to by:

Tech. Spec. 3.5.2.4

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TR 099 Rev. 0 Page 8 of 41 Table 2 Core Monitoring System Bounding Values for LOCA Limited Maximum Allowable Linear Heat Rate j

(kW/ft) i CMS 0-75 75-300 300-400 400-500 500-661 Level EFPD EFPD EFPD EFPD EFPD 8

11.6 11.2 10.8 10.4 10.0 7

13.8 13.3 12.8 12.4 11.9 t

6 14.5 14.0 13.5 13.0 12.5 5

14.5 14.0 13.5 13.0 12.5 4

14.5 14.0 13.5 13.0 12.5 3

14.5 14.0 13.5 13.0 12.5 2

13.7' 13.2 12.8 12.3 11.8 1

11.6 11.2 10.8 10.4 10.0 i

The maximum linear heat rate for each CMS level, as measured with the NAS Thermal Hydraulic Package (Display 4), should be less than the corresponding bounding value from Table 2 above.

t I

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0.10 20 30 40 80 80 70 ' e9 90 100110120130140150 ISO 170180190 200 210 220 230 240 250 260 270 280 290 300 a-Each Div. = 1% WD indicated Rod Index, % Withdrawn source one. saw es.122324e.e6 Referred to by Tech Spee 3.5.2.5.b and 3.5.2.4.e.2 m.

.. =..

-. =

m

~ e'g Y Figure 3.(Page 3 of 3)

Error Adjusted Rod Insertion Limits 400 +/-10 EFPD to EOC t

2 Pump Operation 21s.2, s2

~ '

~T T ITi~

3o0,s2 a

2s3.7, s2

---.- o f80 f

_ /

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, s 6

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/

/

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. 7

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REGION

/

p RESTRICTED

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/

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og 11s,24

- /

?

d 3,;20 {

,/

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202,23

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10 -~

/

PERMISSIBLE

~

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REGION

/

/

>Y' g,<. d.

UV g,,, _

eo8 W--

~

h2,,,.,2,,

0 r

,,,u,,,,,

,,,,,,,u,7,nny,ny,,,,,,

,,,y,,,,

0 10 20 30 '40 80 80-70 80 90 100 110 120 130 140 150 100 170 100 190 200 210 220 230 240 250 260 270 290 290 300

~

Each Div. = 1% WD Indicated Rod index, % Withdrawn sourse Doe. B&W OS 1223240 00 Referred to by Tech Spec 3.5.2.5.b and 3.5.2.4.e.2 g

i i

m-.

m

.-m.

.. m

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i

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Figure 4.(Page.1 of 5) 1" i

Full incore System Page 18 CUel

}

Error Adjusted imbalance Limits j

0 to 75 +0/-10 EFPD j

110 -

1 l1 l

i i

E 5

~

RESTRICTED REGION

_-.110

}

}

l

-j 23.0,1C2 l l

l 17.2,102

{

f E

f t,

1 1

300 l

i d

d

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i J

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5

\\

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28.1, 30 g

E 80 i

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70 z

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24.s,50 50 PERMISSlaLE i

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-5 e

a

~

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1 40

=

o i

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y

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p t

t

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10

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as.s,0 -

l 0

40 -45 40 30 25 -20 15 10 5 0 5 10 15 to 25 30 35 40 45 50 indicated Axial Power imbalance, %FP.

Each DN. = 1% FP 1

.4 Source Doc. B&W 85-1223246 00 i

Referred to by Tech Spec 3.5.2.7.a and 3.5.2.4.e.3 l

e Figure 4 (Page 2 of 5)

L"

"*S*

2'

' 41

^

Full Incore System Error Adjusted imbalance Limits 75 +0/-10 TO 300 +/- 10 EFPD l

1 l

110 RESTRICTED REGloN 110 3

l l

l 5

3

-22.0,10: l l

l 13.2,102 l

E i

\\l l

I l

100 :

100 i

i 4

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~

i i

i go 90

~

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2

=

3 u

3 d

i

~

70 [

c 70 0

5 E

3 e

E 60 60 h

wo m,50 22.0, 50 50 1"

PERMISSIBLE 3

3 REGloN E

m E.

~

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C H

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m oioo, oo;o,,jmo,o o,o.[

0 o

oujoopo.p.o;oo u m,o o j u o p o.p o, no ou ou

-50 45 35 -30 25 -20 15 5 0 5 10 15 20 25 30 35 40 45 50 indicated Axlat Power imbalance, %FP Each Dk. = 1% FP Source Doc. B&W 86-1223246 00 Referred to by Tech Spec 3.5.2.7.a and 3.5.2.4.a.3

~

TR 099' Figure.4 (Page 3 of 5)

.gjo,,. n j

Full incore System Error Adjusted imbalance Limits 300 +/-10 TO 400.+/-10 EFPD i

l l-l l

3 RESTRICTED REGION

[.110 110 l

l l

1 i

j

-22.9,102 l l

l 14.2,102 j

l

[

]

f

[

100~

100

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[

[

90

[

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70 Q

-70 1

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60 60 3

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PERMISSIBLE i

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3 l

3 REGION E

l 3

e E

.[

40 II:.

40 j

0-E E

a m :

1 m

3 8

t a

a j

t 20

" 20

=

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y j,,, A 0 3

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0

,,,,,j,,,,..,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,;

0 50 4 -40 35 25 15' 10 5 0 5 10 15 20 25 30 35 40 45-50 Indicated Axial Power imbalance, %FP.

Each Dk. = 3 FP l

i Source Doc. B&W 86-1223246 00 Referred to by Tech Spec 3.5.2.7.a and 3.5.2.4.a.3

TR 099 Figure 4 (Page 4 of 5) nev. o Page 21 of 41 Full incore System Error Adjusted imbalance Limits 400 +/-10 to 500 +/-10 EFPD 5

l l

1 1

110 :

RESTRICTED REGION 110 1

I l

22.8.162 l l

l 15.1,102 j

i

[

l I

l i

(

100,,

l l

100 0

i i

0

-24.9.92 18.1,92 i

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l i

90 90 3

l l

5 i

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3 27.9. 80 n.

20.2.80 l

E 80 u-80 g

I l

g n

E

>5 70 70 l

.s 7

3 0

t c

60 60 a

l d

w I

d C

d

-33.1. 50 PERMISSIBLE 22.5.50 E

50 g

0-3 REGION h

E t

40 C

40 O

5 8

h d

V 30 m

30 a

1 o

3 5

E c

~

N 2

_M 4

1 3

3 10 10 a

Q 3

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in q u a p o q,. n

,n,g o n

..ojuojiin 4 ugni g ui. ung o un io.

.oi

.o

.in nu 50 45 35 25 15 10 -5 0 5 10 15 20 25 30 35 40 45 50 Indicated Axial Power Imbalance, %FP Each DN. = 1% FP Source Doc. B&W 86-1223246-00 Referred to by Tech Spec 3.5.2.7.a and 3.5.2.4.e.3

TR 099 Figure 4 (Page 5 of 5)

Rev. o 1

Page 22 of 41 -

Full incore System Error Adjusted imbalance Limits' l

500 +/-10 EFPD to EOC E

l Y

l l RESTRICTED REGION l

l l

l l

a 110

=i 110 3

ll i

E-

.I 3

-22.8,102 l l

l-16.,0.102 I

7 100 100 j

I j

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- [

so q

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i 3

E 3

-27.9,30 20.2, 30 E

80 I

at 3

C 8

70 70 '

4 s

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i 3

80 80 I;

t E

3 C

d

-33.1. 50 22.5,50 50 PERMISSIBLE

. 50 Q

3 3

REGION E

~i 3

8

[ 40 40 m

8 i

0 E

ci 1

3 t

M

}

2

~

. o-l 3

E 3

1 E

20 20 t-10 -

~

10 - _

'i

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O ~ 3n,jonjon 0

n n o n. n oj u n

.ui.o4piojon nopen

,n on. nn no on m,

un

.-60 4 -40 35 25 15 10 -5 0 5 10 15 ~ 20 '25 30 35 40 45 50.

Indicated Axial Power imbalance, %FP Each DW. = 116 &

-l Source Doc. B&W 85-1223246 00 Moferred to try Tech Spec 3.5.2.7.a and 3.5.2.4.a.3 1

i

~

'I-)

y TR 099 Figure 5 (Page 1 of 5)-

- au i

Out-of-Core Detector System Error Adjusted imbalance Limits j

O to 75 +0/-10 EFPD l

lI I

I RESTRICTED REGION sto l

11o 5

{

l l

l l

l

}

-E i

l l

j.11.2,1Ge

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I Ii il I' '100 i

100 s

l IIi

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5 REGION l-E-

-g-5.

-27.s,0 l-l 1s.4, O r

o

.o 60 40 30 30 15 10 4 0 5 10 15 20 25 30 35 40 45' 50

'[

indicated Axial Power imbalance, %FP Each DW. = M FP sourca Doc, saw e6-122:24s40 Referred to by Tech Spec 3.5.2.7 and 3.5.2.4.e.3 i

i a

j

~

.. TR - 09 9

_l Figure 5 (Page 2 of 5)

- 8";o j

y.,u Out-of-Core Detector System Error Adjusted imbalance Limits 75 +0/-10 to 300 +/-10 EFPD 3

l I

l.

b.

3 RESTRICTED REGION 11o sto j l

l lI I

I l

h i

7.5,102

-15.7, tw i

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1oo 100 3

l l

l l

I f-l l\\

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[

3 go d l

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yo -

7o s

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I {.,

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l REGION E

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17.5

,,, q,,,, j,,,, j,,,,, ;,,

,,,, j,,,,,,,, l,,,,,

,,,,,,,, j,,,,, o.,,,,,,,,,,,,,,,,,r

.o o

-8o 4o 35 -ao 2o 10 5 o 5 in 15 ao 25 ao 35 40 45 50 indicated Axial Power imbalance, %FP Each DW. ar 1W j

Source Doc. B&W.61223248 00 Referred to by Tech Spec 3.5.2.7. and 3.5.2.4.e.3 -

3

.]

-.,---a.

TR 099 I

av-o Figure 5 (Page 3 of 5)

Page 25 of 41 Out-of-Core Detector System Error Adjusted imbalance Limits 300 +/-10 to 400 +/-10 EFPD I

5 I

RESTRICTED REGloN E

110 110 5l

!I I

l 5

i i

8.4,102

-16.7,102 3

g ii i

100 :

I l

I

\\I I

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l I

I l/l l

I l\\ill l

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)

-18.9,92

/ l l

l l g j 12.4,92 j i

g :

I I

I I

I

/I I

I I)l l

l l

l 1

90 siIllI/!I I

Il\\llIi!

80 80 sl II IllI i

ll Ill E

3 III

/

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I 70 70 1

g 3

l

/

l l

E s' ll 60 60 Il I

I I

Ii l

g 4

i i

4 j

.,0 l

l 17.5, 50 l

E

]

50 50 5

l l

1l 1

l 1

l l

5 5

l l

1 5

l CC 2

40 40 h

h l

l

=

3 0

30 30 5ll l

l l

E i

li l

i E

20 4

~

20 b

I II ll 15 t

3l l

4 l

PERMISSIBL8!

C 10 10 3

I REGION l

5 l

-27.7, O l

l l

17.5,O y

un oujougnogungoujoujuujongini inijo n,4ni nojuojongon ougou ini 45 35 25 -20 15 5 0 5 10 15 20 a. 30 35 40 45 50 i

Indicated Axial Power imbalance, %FP F.ach Div. = 1% FP Source Doc. B&W 86-1223246 00 Referred to.by Tech Spec 3.5.2.7 and 3.5.2.4.s.3

TR 099.

Figure 5 (Page 4 of 5)

$l;$6 j

~

or u Out-of-Core Detector System.

j Error Adjusted imbalance Limits 400 +/-10 to 500 +/-10 EFPD I

i e

i t

i.I+

I I

tio 3 RESTRICTED REGION I

I 110 l

s Iiil l

1 l

ll u, 2 =

1... 1 *

=IIIl!

I, 1

I.

i too i

too ill IIIlll I

I

\\

llI I

i tu, e2 3

1a.m. s /lll I

\\

ir, II4

,, a ii 3

1I IIllII l\\

ll Il i:

1 g

f=.

/I l

e

)

- 14..o' I

i i 1

s l

[

l l

l.!

.E

[

70

= 70 -

~i

.a

/

l 1

l s-1 s

l lj lE

'l so so fl 1l5

]

g 27.7, 50 f 17.5, b

'l i so 5Il l

l l

l h

l lli

)

E III I

I I

i.

oc I

lE i

4o so i

3 I

I I

i o

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l

-l 2

C l -][

so 3,

1 3

l t

3 3

E l

20 -

~

20 l.

(

l

.l I 5-i.

3 PERMISSIBM l l

E l,

10 io 5

REGION

-I.

E-1

,,,,,,,,,,,,,,,,,,,,,,,,,,l,,m,{,,,,l,,,,,,,,,,,,,l,,,,,,,,,,,,,,,,,3,,,,,,,,,,,,,,,,,,,,,,,

27.7,o 17.5,o

)

"o-i o

' 60 40 35 30 20 15 10 -5 0 5 10~ 15'IIT 35~ 30 35: 40 /45 50 f

~ indicated Axial Power imbalance, %FP Each Dk. = 1% FP j

1 Source Doc. B&W 86-122324640 I

jf-Referred to try Tech Spec 3.5.2.7 and 3.s.2.4.e.3 1

l 1

TR 099

~

Figure 5 (Page 5 of 5)

,eu Out-of-Core Detector System Error Adjusted imbalance Limits 500 +/-10 EFPD to EOC l

l l

l 1

110 :

I RESTRICTED REGION i

i 110 i

3 l

l l

l I

E 2

2 16.6,1G4 iO.2,102 b

7 i

j b

I

!I R

100 100 i

ll IIi1/lI I

Il\\lI1II I

i i

i 12.4, 92 j

18.8, 92

!' l I

I I

I 2

U I

I 90 90 3 IIllI/III I

\\1 i!1 l i l

• '8 1**$' 8 l!

80 80 s

Il

/

{

l l

I i

3 I

/

i I

II 3

70 Q

70

~

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7 l

=

j b

60 60

./I I-1 III I

E l

siI o

1.5, l

l h

50 50 s

I II i

I l

5 II I

5 I

I.

I l

1lC C

40 40 l Ih 30 E

30 2

I l

1

{

l 5

1 I

i l

5 i

I I

o I

i i:

l l5 l

l

=l O

3 l

20 20 b

I l

a

'j d

C 10 PERMISSIBLE 10 REGION l

3 27.7. 0 l

l l

17.5,O l

b 0

,uijoujinigoupinjonpiopinpoi isopiotun,n.i io poqoupanjo n "0

on un 50 40 -35 30 25 -20 15 10 -5 0 5 10 15 20 25 30 35 40 45 50 indicated Axial Power imbalance, %FP Each Dhr. = 1% FP

?

Source Doc. B&W 86-1223246 00 Referred to by Tech Spec 3.5.2.7 and 3.5.2.4.e.3

)

~

TR 099 Figure 6 (Page 1 of 5) nev-o Page 28 of 41 Minimum incore System Error Adjusted imbalance Limits 0 to 75 +0/-10 EFPD I

I

! RESTRICTED REGION 110 110 3

l l

l l

l l

4 i

2

-14.7.1 uz g

l 9.6.102 l

I l

i l

100 f

100 i

lll I i /i l

l I \\lll l

l l

LE l

i

-16.7.92 fl l

j

\\ 12.5.92 j

j t

i l

i l

i /l i

I

\\

l l

I i

1 1

g i

ll l

l

/ 1 I

I l\\

liIIl!E h 14.6.so l I! E, i

l i

1 -19.7.80/ I e

ii lIii I

IIIIE j

E 0

70 70 sl II

/

]

E l

/

l IIc 2

=m

=

80 3

I

/ I-5 IE as.50 / II g

17.3.50 l

I E

,o i

I t

A I

i i

g ll l

l l

l l5 l"

5 a

a l

I l

C 5

5l l

l E

t

=

a

=

3 l

l

.6 I

E u

3 l

l l

5 l

20 20 i

3 I

I IIE 10 PERMISSIBLE 5

10 i

!l l

REGION l

j 24s.0 17.3.0 0

l-0 o o.o,p o.g o.jo o m o uml moi

]

,m.imm m oioo p o.pm. mmimopo, ou mm om 45 35 25 15 5 0 5 10 15 20 25 30 35 40 45 50

~

Indicated Axial Power imbalance, %FP Each Dnr. = 1% FP Source Doc. B&W 861223246-00 Referred to by Tech Spec 3.5.2.7 and 3.5.2.4.e.3

TR 099 Figure 6 (Page 2 of 5) nev. o Page 29 of 43 Minimum incore System Error Adjusted imbalance Limits 75 +0/-10 to 300 +/-10 EFPD i

E 3

RESTRICTEo REGION 110 110 l

l I

l l

i

[

14.7.102 6.3.102

-,,l l

l l

l l

3 i

il I

.x i

i 300 300 i

Iii l

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l i

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l l

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20

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20 l

l 10 PERMISSIBLE 10

!l REGION I$

5 l-24.9o

-l 15.7.o I

$o o

-o m p.op.op oj..o oop...po

,oo.oo ooj

o. mo; oujoojuoj,o, u mpo,

,o,

-So 40 30 -25 20 -15 10 -5 o 5 10 15 20 25 3a 35 40 45 So Indicated Axial Power imbalance, %FP Each Dk. = 1'E FP Source Doc. B&W 86-1223246-Oo Referred to by Tech Spec 3.52.7 and 3.52.4.e.3

"rR 099 Figure 6 (Page 3 of 5) nev. o Page 30 of 41 Minimum incore System Error Adjusted imbalance Limits 300 +/-10 to 400 +/-10 EFPD i

110 :

i RESTRICTED REGION I

I 110 1

!l 0.

l l

I l

l l

L 7.1,102

-14.7.1 w i

3 U

l I

l h

I

\\

100 100 IIi i

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70 70 s

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50 l

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l l

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a U

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40 40 5l l

l l

l3 l

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30 30 sI II Ii I

E i

i I

3 II I

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E 20 20 i

iI Ii l

l IIE 3

I I

I I

E 10 PERMISSIBLE 10 d

l I

REGION h

f m.p u,lp u $4.9,0 l

l l ~~

j.

15.7.0 l [

pm p.m.mmpm pm.pm.p.m..m p.. m m g m.p.m p.m p.m g m. mmemy 45 35 25 20 10 5 0 5 10 15 20 25 30 35 40 45 50 1

Indicated Axial Power imbalance, %FP Each DN. = W FP l

Source Doc. B&W 86-1223246-00 i

Refeired to Dy Tech Spe 3.5.2.7 arx!3.5.2.4.e.3

]

I

TR 099

~

Figure 6 (Page 4 of 5) nev. o Page 31 of 41 Minimum incore System Error Adjusted Imbalance Limits 400 +/-10 to 500 +/-10 EFPD a

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3 RESTRICTED REGION 110 110 sf l

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i 8.0,102

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Indicated Axial Power Imbalance, %FP Each DN. = 1% FP Source Doc. B&W 86-1223246-00 Referred to by Tech Spe 3.5.2.7 and 3.5.2.4.s.3 i

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3.

.TR 099 i

Figure 6 (Page 5 of 5)

Rev a i

Page 32-of 41 Minimum incore System

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Error Adjusted imbalance Limits 500 +/-10 EFPD to EOC 11o RESTRICTED REGION

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FIGURE 7 (Page 1 of 2)

LOCA Limited Maximum Allowable Linear Heat Rate Mark B8 Fuel 19 (32.000, 18.0)

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FIGURE 7 (Page 2 of 2)

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I TR 099 Rev. O Page 35 of 41 FIGURE 8 AXIAL POWER IMBALANCE PROTECTIVE LIMITS 1

Thermal Power Level, %

i f

-- 120 433.112b

'h 37A.112D

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ACCEPTABLE 4 PUMP OPERATION

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ACCEPTABLE 3 AND 4 PUMP OPERA 70N

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to 20 30 40 50 60 70 80 l

Axial Power imbalance, %

EXPECTED MINIMUM l

CUR'E REACTOR COOLANT FLOW (Ib/hr) 1 139.8 x 10E+6 l

2 104.5 x 10E+6

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Source Doc. T.S. Figurs 2.1-2 j

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w.

TR 099 Rav. O

'Page 36 of 41

.e FIGURE 9 PROTECTION SYSTEM MAXIMUM ALLOWABLE SETPOINTS FOR AXIAL POWER IMBALANCE Thermal Power Level, %

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- - 120 30.0.108.0 24.5.108.0 iACCEPTABLE i 4 PUMP i

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30.0.80.6 24.5.80.6 IACCEPTABLE 80 g

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Source Doc. T.S. Figure 2.3-2

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TR 099 Rev. O Page 37 of 41 i

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i-Operating Limits Not Required by Technical Specifications j

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7. g-TR 099 Rev. 0-Page 38 of 41 1.

Core Minimum DNBR Operating Lhnit

(

Reference:

BAW-2187)

The core minimum DNBR value as measured with the NAS Thermal Hydraulic Package (Display 1 or 4) should not be less than 2.02 (102% ICDNBR).

i 2.

Maximum Allowable Local Linear Heat Rate Limits

(

Reference:

TS 2.1 Bases)

The maximum allowable local linear heat rate *imit is the minimum LHR that will cause centerline fuel melt in the r L This limit is the basis for the imbalance portions of the Axial wer 1mbalance Protective Limits and Setpoints in Figures 8 and 9 Jf the COLR, respectively. The limit A *uel design-specific; the value for the most limiting fuel de sigr.

"5e cu ment core is used for monitoring as given below:

e BWFC Mark B8/B8V LHR to melt

" 20.5 kw/ft t

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.e TR 099 Rev. O Page 39 of 41 DNBR-Related Bases Descriptions E.

f:

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TR 099 Rev. 0 Page 40 of 41 1.

Power-to-Flow Trin Setnoint

Reference:

TS 23.1, Table 23-1 and 23.1 Bases i

The nuclear overpower trip setpoint based on RCS flow (power / flow or flux / flow trip) for the current cycle is 1.08. This setpoint applies to four, three-and two-pump operation as described in TS Table 23-1 and Figure 9 of the COLR.

The power / flow trip, in combination with the axial power imbalance trip, provides steady-state DNB protection for the Axial Power Imbalance Protective Limit (Figure 8). A reactor trip is initiated when the core power, axial power peaking and reactor coolant flow conditions indicate an approach to the DNBR limit. The power / flow i

trip also provides transient protection for loss of reactor coolant flow events, such as loss of one_ RC pump from a four RC pump operating condition.

t Power level and reactor flow rate combinations for four, three-and two-pump operating conditions are as follows:

1.

Trip would occur when four reactor coolant pumps are operating if power level is 108 percent and flow rate is 100 percent, or power level is 100 percent and flow rate is 92.5 percent.

t 2.

Trip would occur when three reactor coolant pumps are 6

operating if power level is 80.6 percent'and flow rate is 74.7 percent or power level is 75 percent and flow rate is 69.4 percent.

i 3.

Trip would occur when one reactor coolant pump is operating in cach loop (total of two pumps operating) if power level is 53.1 percent and flow rate is 49.2 percent or power level is 49 percent and flow rate is 453 percent.

The power level trip and associated reactor power / axial power-imbalance boundaries are reduced by the power-to-flow ratio as a percent (1.08 percent) for each one percent flow reduction.-

[

TR 099

. f,., _

.Rev. 0 Pags 41 of 41

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0

2. Design Nuclear Power Peaking Factors

(

Reference:

TS 2.1 Bases)

The design nuclear power peaking factors given below define the reference design peaking condition in the core for operation at the maximum overpower.

These peaking factors serve as the basis for the pressure / temperature core

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protection safety limits and the power-to-flow limit that prevent cladding failure due to DNB overheating.

Nuclear Enthalov Rise Hot Channel Factor (Radial-Local Peakina i

Factor), F",,

F",, = 1.71 Axial Flux Shape Peaking Factor, F"2 F", = 1.65 (cosine)

Total Nuclear Power Peaking Factor, F",

[

F", = F,, x F",

F", = 2.82 I

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