ML20082M497

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Rev 8 to COLR, Updating COLR to Reflect Cycle 16 Setpoints & Restrictions Defined in EA-FC-95-009,Rev 0 Cycle 16 Setpoints & COLR
ML20082M497
Person / Time
Site: Fort Calhoun Omaha Public Power District icon.png
Issue date: 04/04/1995
From: Weber W
OMAHA PUBLIC POWER DISTRICT
To:
Shared Package
ML20082M467 List:
References
NUDOCS 9504240245
Download: ML20082M497 (16)
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Fort Calhoun Station Unit No. 1 f i

i TDB-Vi l TECHNICAL DATA BOOK PROCEDURE

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Title:

CORE OPERATING LIMIT REPORT j i

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FC-68 Number: 46647 ,

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Reason for Change: To update COLR to reflect Cycle 16-  ;

setpoints and. operating restrictions {

defined in EA-FC-95-009, Rev. O, i Cycle 16 Setpoints and COLR.

Contact Person: William O. Weber l

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ISSUED: 04-04-95 9:00 pm R8 9504240245 950419 PDR ADOCK 05000285 p PDR

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FORT CALHOUN STATION TDB-VI TECHNICAL DATA BOOK PROCEDURE PAGE 1 OF 15 1

Fort Calhoun Station, Unit 1 1

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Cvels 16 Core Onoratina Limits Renort l

Due to the critical aspects of the safety analysis inputs contained in this report, changes may not be made to this report without concurrence of the Production Engineering Division, Nuc%r Engineering Department.

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i FORT CALHOUN STATION TDB-VI TECHNICAL DATA BOOK PROCEDURE PAGE 2 OF 15 l

TABW OF CONTENTS 1

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ltem Desenption Eagt 1.0 Introduction 5 2.0 Core Operating Umits 5 3.0 TM/LP Umit 6 4.0 Maximum Core inlet Temperature 6 5.0 Power Dependent insertion Umit 7 6.0 Unear Heat Rate 7 7.0 Excore Monitoring of LHR 7 8.0 Peaking Factor (FaT, FnT) Umits 7 9.0 DNB Monitoring 7 '

10.0 FnT, pqT and Core Power Umitations 8 11.0 Retueling Boron Concentration 8 I

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FORT CALHOUN STATION TDB-Vi TECHNICAL DATA BOOK PROCEDURE PAGE 3 OF 15 LIST OF TABES l

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'n Table No. TAla Eaon 1 TM/LP Coefficients 6 [

2 Maximum Fa and Fxy Umits 7  !

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r t,

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b t

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FORT CALHOUN STATION TDB-VI I TECHNICAL DATA BOOK PROCEDURE PAGE 4 OF 15 LIST OF FIGURES  :

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Floure No. Iitig Eagg -

i 1 Thermal Margin / Low Pressure 4 Pump Operation 9  ;

2 Power Dependent insertion Umit 10 3 Allowable Peak Unear Heat Rate vs. Bumup 11 4 Excore Monitoring of WR 12 -

5 DNB Monitoring 13 3 6 BASSS Allowabic Power 14  !

7 FaT, p,yTand Core Power Umitations 15 f

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FORT CALHOUN STATION TDB-VI TECHNICAL DATA BOOK PROCEDURE PAGE 5 OF 15 Cvele 16 Core Operatina Limits Report 1.0 Introduction This report provides the cycle-specific limits for operation of the Fort Calhoun Station Unit 1 for Cycle 16 operation. It includes limits for: l 1.) TM/LP LSSS 4 Pump Operation (PVAR) 2.) CoreinletTemperature (TIN) 3.) Power Dependent insertion Umit (PDIL) 4.) Allowable Peak Unear Heat Rate 5.) Excore Monitoring of LHR T

6.) Planar Radial 7.) Integrated Peaking Radial Peaking FactorFactor (Fa (Fxy ) T) 8.) DNB Monitoring 9.) Fa Tfp Tversus Power Trade off curve 10.) Refue7ng Boron Concentration These limits are applicable for the duration of Cycle 16. For subsequent cycles the limits will be l reviewed and revised as necessary, in addition, this report includes a number of cycle-specific coefficients used in the generation of certain reactor protective system trip setpoints or allowable increases in radial peaking factors.

2.0 Core Operatina Limits All values and limits in this TDB section apply to Cycle 16 operation. Cycle 16 must be operated l within the bounds of these limits and all others specified in theTechnical Specifications. This report has been prepared in accordance with the requirements of Technical Specification 5.9.5. The values and limits presented within this TDB section have been derived using the NRC approved methodologies listed below:

OPPD-NA-8301, " Reload Core Analysis Methodology Overview" Rev. 6, Dated December 1994. (TAC No. M89455)

OPPD-NA-8302, " Reload Core Analysis Methodology, Neutronics Design Methods and Verification" Rev. 4, Dated December,1994. (TAC No. M89456)

OPPD-NA-8303, " Reload Core Analysis Methodology, Transient and Accident Methods and Verification", Rev. 04, Dated January 1993. (TAC No. M85845) 5 R8

FORT CALHOUN STATION TDB-VI TECHNICAL DATA BOOK PROCEDURE PAGE 6 OF 15 3.0 TM/LP LimR The TM/LP coefficients for Cycle 16 are shown below: l Table 1 -

Coefficient Value a 29.73

$ 18.44 y - 11470 l The TM/LP setpoint is calculated by the PVAR equation, shown below and in Figure 1:

Pyan = 29.73 PF(B) A1(Y)B + 18.44Ti u - 11470 PF(B) = 1.0 B2.100%

= -0.008B + 1.8 50% < B < 100% i

= 1.4 B 5 50%

A1(Y) = -0.3549Yi + 1.0882 Y 5 0.25 i

= 0.5714Yi + 0.857 Yi > 0.25 Where:

B = High Auctioneered thermal (AT) or Nuclear Power, % of rated power Y = Axial Shape Index, asiu ,

Tni = Core inlet Temperature, F i PvAa = Reactor Coolant System Pressure, psia l l

4.0 Maximum Core Inlet Temperature The maximum core inlet temperature (T i n) for Cycle 16 shall not exceed 545*F. l This limit is not applicable during either a thermal power ramp in excess of 5% of rated thermal power per minute or a thermal power step greater than 10% of rated thermal power.

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FORT CALHOUN STATION TDB-VI TECHNICAL DATA BOOK PROCEDURE PAGE 7 OF 15 5.0 Power Dependent insertion Limit .

The power dependent insertion limit is defined in Figure 2 for Cycle 16 operation. l 6.0 Linear Heat Rate The allowable peak linear heat rate vs. burnup for Cycle 16 is 15.5 kW/ft. The allowable peak linear heat rate for Cycle 16 is shown in Figure 3.

7.0 Excore Monitorina of I.HR The allowable operation for power versus axial shape index for monitoring of LHR with excore detectors for Cycle 16 is shown in Figure 4. l 8.0 Peakina Factor Lijnl13 The Cycle 16 maximum full power values for the unrodded planar radial peaking factor (Fn,T) and l integrated radial peaking factor (Fa T) are shown in Table 2.

Table 2 FAnvimum Full Power Fm and yF Limits Peakina Factor Litnita T 1.77 Fn T 1.86 Fxy 9.0 DNB Monitoring .

The Cycle 16 limits for DNB as a function of axial shape index and core power is shown in Figure l S.

When the Better Axial Shape Selection System is operable, during Cycle 16, the core power is limited as a function of the axial shape index as shown in Figure 6. Figure 6 will eliminate the need for seperate LOCA and fuel performance limits to be maintained by the operators while operating with BASSS.

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FORT CALHOUN STATION TDB-VI TECHNICAL DATA BOOK PROCEDURE PAGE 8 OF 15 10.0 F.T, p T and Core Power Limitations T

Core power limitations versus FnT and Fxy are shown in Figure 7 for Cycle 16. l t 11.0 Refueling Boron Concentration The refueling boron concentration must be maintained with a boron concentration of at least 2000 ppm in the reactor cociant system to ensure a shutdown margin of not less than 5% with all CEAs -

withdrawn.

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FORT CALHOUN STATION TDB-VI TECHNICAL DATA BOOK PROCEDURE PAGE 9 OF 15

)

590 ASI = -0.06 580 Lt.

LII 570

= . N 2400 psia 113 2250 psia 2100 psia z

- 540 N z

5 o 530 g l O \ l U -

1750 psia l 12: 520 0

0 -

510 500 60 70 80 90 100 110 120 CORE POWER (% OF RATED)

PVAR = 29.73PF(B)A1(Y)B + 18.44TtN - 11470 e

PF(B) = 1.0 B 2.100% )

= .008B + 1.8 50%<B<100%

= 1.4 B $ 50%

A1(Y) = -0.3529Y i + 1.0882 Yi 1 25

= 0.5714Y + 0.857 Yi >.25 ,

4 CYCLE 16 THERMAL MARGIN / LOW PRESSURE FIGURE COLR 4 PUMP OPERATION 1 m

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FOPT CALHOUN STATION TDB-VI TECHNICAL DATA BOOK PROCEDURE PAGE 10 OF 15

- 126

'~~~~

- 100.8 LC NGT1ERM STEADY STA1E _'

INSERT 10N UIAIT ,

o - 75.6 l

-' ' PPOIL

~ ~

! SHOlIT TElIM ,

llNSERTIOPIUM{,,'

$ - 100.8 - 25 2 l .

O I , POIL or TRWSIENT b

il: " - 75.6 -0  !,, r /. INSE;RTIOfI LIMir a $ ,-' /

$ - 50.4 ,-

EMERClENCY BORATION LIMIT ga ,

(12"ILELDVf PDIL - REi:ER TOAOF -3)

- 25.2 - 126 a i

& l 5 -0 - 100.8  !

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g E - 75.6 )

o 8 a: e O c - 50.4 4

tu U - 126 - 252

- 100.8 - 0

{ - 75.6 8

b - 50.4 I

- 252 l

-0 0 20 40 60 80 100 REACTOR POWER (% OF ALLOWED POWER) I CYCLE 16 POWER DEPENDENT INSERTION LIMIT FIGURE ,,

COLR 2 '

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FORT CALHOUN STATION TDB-VI TECHNICAL DATA BOOK PROCEDURE PAGE 11 OF 15 l l

1 18 UNACCEPTABLE OPERATION i

16 ,

15.5 KW/FT 14 ACCEPTABLE OPERATION 4

12 O  ;

L 10 l

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0 5000 10000 15000 20000 BURNUP (MWD /MTU) j i

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CYCLE 16 ALLOWABLE PEAK LINEAR HEAT RATE FIGURE i

- l COLR VS.BURNUP 3 Re

C CY TF EO OC CR L L LWcCWZF014.aO5WgOOEmEO3mo c -

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FORT CALHOUN STATION TDB-VI TECHNICAL DATA BOOK PROCEDURE PAGE 13 OF 15 110

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NOTE: WHEN BASSS IS OPERABLE THIS FIGURE IS SUPERSCEDED BY FIGURE 6 - BASSS DNB ALLOWABLE POWER FIGURE COLR DNB MONITORING 5  :

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