ML20128C198

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Rev 4 to COLR, Allowing Increase in Operating Space for DNB-LCO Monitoring W/O Requiring Use of Basss
ML20128C198
Person / Time
Site: Fort Calhoun Omaha Public Power District icon.png
Issue date: 12/17/1992
From: Weber W
OMAHA PUBLIC POWER DISTRICT
To:
Shared Package
ML20128C189 List:
References
NUDOCS 9302030349
Download: ML20128C198 (14)
v • d • e


Text

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D Fort Calhoun;Stationi

- U n i t N o .-' l--

TDB-VI - '

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-TECHNICAL DATA BOOK PROCEDURE'

Title:

CORE OPERATING LIMIT: REPORT i a

.Setpoint/ Procedure.

Form Number-(FC-68): 39952 r

Reason for Change:- Allow: increase operating' space for l

~

DNB-LCO monitoring-without-requiring.' -

use of BASSS.

Contact-Person: William-0.- Weber'

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ISSUED: 12-17-92 4:00 pm ' R4 -

i 9302030349 930125 PDR ADOCK--05000285 P- -PDR

FORT CALL!OUN STATION TDD-VI

. TECJulICAL DATA DOOK PROCEDURE PAGE 1 0F 13

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Fort Calhoun Station, Unit 1 Cycle 14 Core Onoratina Limits Renort Due to the critical aspects of the safety analysis inputs contained in this report, changen may not be made to this report without concurrence of the Production Engineering Division, 11uclear Engineering Department.

FC/TDB R4

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i . . 4 ... o . . . . .

FORT CALil0Uli STATZoli TDB-VI TECIDlICAL DATA BOOK PROCEDURE PAGE 3 OF 13 TABLE OF CONTE M Lten Descrintion Eng.g 1.0 Introduction 5 2.0 Core operating Limits 5 3.0 TM/LP-Liloit 6 4.0 Maximum Cote Inlet Temperature 6 5.0 Power Dependent Insertion Limit 6 6.0 Linear l{ cat Rate 6 7.0 Excore Monitoring of LilR 7 T T 8.0 Peaking Factor (Fxy , Fg ) .'.imit s 7 9.0 D!iB Monitoring 7 10.0 FaT , yxy T and Core Power Limitations 7 11.0 Refueling Boron Concentration 7 4

R4 FC/TDB

FORT CALllotTli STATIO!( TDB-V8

.TECHiiICAL DATA DOOK PROCEDURE PAGE 3 0F 13 LIST OF TARLE Table $10.. Title Eagg i TM/LP Coefficients 6 2 Maximum Fa and P,y Limits 7 R4 FC/TDB

e .

FORT CALHOUN STATION TDB-VZ

. TECIUlICAL DATA BOOK PROCEDURE PAGE 4 OF 13 l

l J,ISTS OF FIGURER Plaure [192 Title Pace 1 Thermal Margin / Low Pressure 4 Pump Operation 8 2 Power Dependent Insertion Limit 9 3 Allowable Peak Linear Heat Rate vs. Burnup 10 4 Excore Monitoring of LIIR 11 5 DND Monitoring 12 T T 13 6 F,y , Fn and Core Power Limitations f

R4 FC/TDB

FORT CALL!OUN STATION TDD-VI

. TECllNICAL DATA BOOK PROCEDURE PAGE 5 OF 13 CYCLE 14 CORE OPERATING LIMITS REPORT f'

1.0 INTRODUCTIOR This report provides the cycle - opecific limits for operation of thq Fort Calhoun Station Unit i for Cycle 14 operation. It includes limits fort 1.1 TM/LP LSSS 4 Pump Operation (Pyg) 1.2 Core Inlet Temperature (Tm) 1.3 Power Dependent Insertion Limit (PD7L) 1.4 Allowable peak Linear Heat Rate 1.5 Excore Monitoring of LliR 1.6 Planar Radial Peaking Factor (F,yT) 1.7 Integrated Radial Peaking Factor (Fa h 1.8 DNB Honitoring 1.9 PnT /F,yT versus Power Trade off curve 1.10 Refueling Boron Concentration These limits are applicable for the duration of Cycle 14.

For subsequent cycles the limits will be reviewed and revised as necessary. In addition, this report includes a number of cycle - specit'ic coefficients used in the generation of certain reactor protective system trip setpoints or allowable increases in radial peaking factors. -

This report has been prepared in accordance with the regtirements of Technical Specification 5.9.5. The core operating limits have been developed using the NRC motiodologies listed in Technical Specification 5.9.5.b.

2.0 pSEE OPERATING LIMITS The values and limits presented within this section have been derived using the NRC - approved methodologies listed in Technical Specification 5.9.5. All values and limits in this section apply to Cycle 14 operation. Cycle 14 must be operated within the bounds of these limits and all others specified in the Technical Specifications.

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R4 FC/TDB y n7m

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FOPT CALHOUN STATION TDB-VI '

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TECHNICAL DATA BOOK PROCEDURE PAGE 6 OF 13 3.0 TM/LP LIMIT ,,.

The TM/LP coefficients for Cycle 14 are shown below:

Table 1 I

Coefficient Value ,

a 29.73

  1. 18.44 y -11325 The TM/LP setpoint is calculated by the Pygg equation, shown below and in Figure 1:

Pygg = 2 9.7 3 PF (B) A1(Y) B + - 18. 4 4Tgg ~11325 PF(D) = 1.0 B2100%

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

= 1.4 D550%

A1(Y) = -0.35294Y3+ 1.08824 Y1 $ 0.25

= 0.57143Y 1 + 0.875 Y3 _> 0.25

- Where:

B = High Auctioneered thermal (AT) or Nuclear Power, % of rated power Y = Axial Shape Index, aslu Tzu = Core Inlet Temperature, 'F Pygg = Reactor Coolant System Pressure, psia 4.0 MAXIMUM CORE INLET TEMPERATURE The maximum core inlet temperature (Tyg) for Cycle 14 shall not exceed 543'F.

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 stop greater than 10% of rated thermal power. .

5.0 POWER DEPENDENT INSERTION LIMIT The power dependent insertion limit'is defined in Figure 2 for Cycle 14 operation.

r R4 FC/TDB

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

FORT CALHOUN STATION TDB-VI t 3 , ,

. TECl(NICAL DATA DOOK-PROCEDURE PAGE 7 OF 13  ;

+

6.0 LINEAR HEAT RATE

.; The allowable peak linear heat rate vs. burnup for cycle 14'is  ;

15.5 kW/ft for less than or equal to 7770 MWD /T, and 14.4 kW/ft for greater than 7770 MWD /T. The allowable peak linear heat rate for Cycle 14 is shown in Figure 3. i 7.0 EXCORE MONITORIt{.G OF LHR The allowable operation for power versus axial shape index for monitoring of LIIR with excore detectors for Cycle 14 is shown in Figure 4.

8.0 PEAKING FACTOR LIMITS The maximum full power valuen for the unrodded planar radial peaking factor (F T) and integrated radial peaking factor Fg) T are shown in Table 2.

i Table 2 4

linximum Full PoweQR and Fxy,_Ljalig Peakina Factor Limits Fxy7 1.85 FgT 1.76

-l 1

9.O DNB MONITORING The limits for DNB as a function of axial shape index and core

  • power is shown in Figure 5.

Core power shall be maintained'within the limits established by the Better Axial shape Selection System (BASSS) for CEA insertion of the lead bank of <65% (i.e., greater than or equal to 44.1 inches withdrawn) when BASSS is operable, or within the limits of Figure.5.

I I

10. 0 ExyMg T AND CORE POWER LIMITATIONS Core power limitations versus Fg T and FxyT-are shown in Figure-6.

l 11.0 REFUELING BORON CONCENTRATION t

The refueling. boron concentration must be. maintained with'a boron concentration of at least 1700 ppa in the Reactor _ Coolant w, System to ensure a shutdown margin.of-not less than 5% with all CEAs withdrawn.

FC/TDB. R 4 ..

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FORT CAL!!OUN STATION TDB-VI PAGE 8 OF 13 TECIINICAL DATA BOOK PROCEDURE 590 ,

ASI = -0.06 580

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i K s

L x

.N ~

x 550- s 2250 psia E 540

$ 2100 psia 5

O 530

,N O

O us i O \ 1750 psia O

! 510 500 ' '

i 60 70 80 90 100 110 120 CORE POWER (% OF RATED) l PVAR = 29.73PF(B)A1(Y)B + 18.44Ti n - 11325 .

l l PF(B) = 1.0 B 2.100%

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

= 1.4 8 550%

Al(Y) = -0.35294Y i + 1.08824 Yi &.25

= 0.57143Yi + 0.875 Yi >.25 (

R4 CYCLE 14 THERMAL MARGIN / LOW PRESSURE FIGURE COLR 4 PUMP OPERATION 1

s TDB-VI FORT CAIJ10UN STATION l TECHNICAL DATA BOOK PROCEDURE PAGE 9 @F 13  !

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~ 126

- 100.8 LC NGTERMSTEADVSTA1 E ,

IN5ERT10N UiMT ,

g - 75.6 ,e'

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SHOl1T TERM , PPtill INSEf1 TION UMl

- 100.8 - 25.2 ,

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% l ,

' PDit or TBANSilNT

$ " - 75.6 -0 l ,

/ INSE RTION UMi r 0 ,

5 - 50.4 ,'

EMERC ENCY BORATION LIMli 052.* / (12"llELOW PDil - RE TER TO AOF -3)

- 25.2 - 126 (n 2)

E u) -0 - 100.8 O

r a.

$ E - 75.6 o 8 b - 50.4 u1 U

- 126 - 25.2

- 100.8 - 0

[ - 75.0 8

b - 50.4

- 25.2

-0 0 20 40 60 80 100 REACTOR POWER (% OF ALLOWED POWER) i L, R4 CYCLE 14 POWER DEPENDENT INSERTION LIMIT FIGURE ,

COLR 2

y-FORT CAL.HOUN STATIOfJ TDB-V1 TECHNICAL DATA BOOK PAGE 10 OF 13 L <-

17 1

16 UNACCEPTABLE OPERATION ,

7 15.5 KW/FT L

S 15 g e 3

I 14.4 KW/FT

@ 7770 MWD /MTU z -

] ACCEPTABLE OPERATION 34 13 0 5000 10000 15000 20000 BURNUP (MWD /MTU) 1 N

R4 CYCLE 14 ALLOWABLE PEAK LINEAR HEAT RATE FIGUBE COLR VS. BURNUP 3

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, FORT CALIIOUN STATION TOB-VI TECl!NICAL DATA DOOK PROCEDURE PAGE 11 0F 13 g-110 100 0:

W 90 O ( .os,80) (.1, 80)

Q- 80 /

W 0"

70 -

h (- .2,70) ( 2,70)

Q W 60 3

0 y

._j 50

<C LL O 40 H

Z W 30 0

CC W

0. 20 10 0 , ,

.4 .2 0 .2 .4 AXIAL SHAPE INDEX (ASIU)

-- R4 i

i CYCLE 14 FIGURE-COLR EXCORE MONITORING OF LHR 4

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i FORT CAUiOUN STATION TDB-vi

- TECHNICAL DATA BOOK PAGE 12 OF 13 110 100

(' '00) (*18 '00) 90

/ 1 g k W

3 80 -

[ .

\

o /

a. '

f w 70 W

o O 60 7(-0.3,08) l0.3,60) g W

3 50 oJ J 40 <-

<C u

' O 30 F--

Z W 20 g

W W

D 10 0

.4 .2 0 .2 ,4 i

AXIAL SHAPE INDEX (ASIU)

NOTE: WHEN BASSS IS OPERABLE THIS FIGURE IS SUPERSCEDED BY THE BASSS DNB ALLOW-ABLE POWER VALUE (

R4 CYCLE 14 FIGURE DNB MONITORING 5 COLR

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  • FORT CAIJIOUN STATION TDB-VI TECHNICAL DATA BOOK PROCEDURE ,, ,

PAGE 13 0F 13

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110 I p,T T Fxy LIMIT LIMIT-100 W

Lij 90 (1.76,90) (1.8o,90) h o

1 80 Lij W

O 70 (1.9 ,75) g (2.01, 7s)

O W

g 60 o

.J

.J 50 4

i LA-t O 40 l--

Z-W 30 g

W W

1 20 10 0

1.75 1.80 1.85 1.90 1.95 2.00 2.05 T

Fxy and FrT .

L CYCLE 14 pg T, FrT, AND CORE POWER LIMITATIONS. FIGURE

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COLR i

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