ML20118A393

Rev 2 to Fort Calhoun Station Cycle 14 Core Operating Limits Rept

ML20118A393
Person / Time
Site:	Fort Calhoun
Issue date:	08/17/1992
From:	Weber W OMAHA PUBLIC POWER DISTRICT
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ML20118A392	List: ML20118A391 ML20118A393
References
NUDOCS 9209020342
Download: ML20118A393 (14)

Text

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

i Port Calhoun Station '

Unit No. 1 .

TDB VI TECHNICAL DATA BOOK PROCEDURE

Title:

CORE OPERATING LIMIT REPORT Setpoint/ Procedure Form Number-(FC-68): 38867 Reason for Change: Update Section 6.0 and Figure 3 in COLR to reflect increase in peak linear heat rate to 14.4 kW/ft.

Contact Perron: William Weber

-ISSUED: 08-17 4:00 pm R2 P

, s-FORT CALHOUN STATION TDB-VI T.ECIIN,ICAL DATA BOOK PAGE 1 OF 13 Fort Calhoun Station, Unit 1 Cycle 14 Core Ong atine Limits _Repg t 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, Nuclear Engineering Department..

M FC/TDB R2 l 1

A. -

-L F 7T CALilOUli STATIO!1 TDB-VI

7. Jf!!1ICAL DATA 13OOK PAGE 2 OF 13 ,

TMILA_OL_C9EIIliTR ,

I Jie:: Doncription P_Lqs I.0 Introduction 5 2.O Cc ce Operating Limits 5 3.0 TM/LP Limit 6 M 4.0 Maximum Core Inlet Temperature 6 L 5.0 Power Dependent Insertion Limit 6 6.0 Linear 11 eat Rate 6 7.0 Excore Monitoring of LliR 7 8.0 Peaking Factor (F xy T, Fg)

T Limit.s 7 D!1B Monitoring 9.0 7 10.0 T F n, F T and Core Power Limitations 7 11.0 RefuelYng Boron Concentration 7

(

T_

FC/TDB R2 N

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

FORT CALHOUN STATI0tl TDB-VI TECHNICAL DATA BOOK PAGE 3 OF 13 .

. I LIET_9P TARLE ,

i Tablo Noa Title P.A9R 1 TM/LP Coefficients 6 2 Maximum Fg and Fxy Limits 7 Y

F i

l l

f FC/TDB- R2 i

, 4 ,;' , _ , _: : . . . , . . . . _ . . . . . _ , . . ~ _ . . _ . . - . . . . . . . , ._ ;.. . .. ,, . , _ . , . _. . _ _ .

t FORT CALHCL'N. STATION- TDB-VT

. TECHNICAL-DATA-BOOK PAGE'4 OF 13- ,

LISTS OF FIGURES-Ficture No. Title- Pace

1. Thermal Margin / Low; Pressure 4-Pump Operation 8 2 Power Dependent insertien Limit 9 3 A'.lowable Peak Linear Heat Rate vs. Burnup 10 4- Excore Monitoring of LHR' 11 5 DNB Monitoring 12 T T 6 Fxy , - F3 and Core Power Limitations 13-L

=FC/TDB. R2

((

Q^ t '

' FORT /CALHOUN' STATION ~ -TDB-VI e . TECHNICAL. DATA BOOK PAGE 5 OF.13

['

CYCLE-14LCORE OPERATING-LIMITS REPORT-

-1.0: INTRODUCTION This report 1providesLthe cycle - specific limits for operation 1otLthe Fort Calhoun Station Unit 1 for Cycle 14 operation._- It includes limits for:

- 1.1. 'TM/LP LSSS 4 Pump Operation (Pygg)

1. 2 : Core _ Inlet Temperature (Tru)

, 1.3> PowerfDependent Insertion Limit (PDIL)

.1.4 -Allowable' Peak Linear Heat Rate 1.5 Excore Monitoring of LHR 116- Planar-Radial Peaking Factor-(FxyT)

T

1. 7- Integrated 1 Radial Peaking Factor (Fn) 1.8- DMB' Monitoring 1.' 9 T T

- Fa /Fxy 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 L number-of-: cycle!-;specificLcoefilcients used in the igeneration.of?certain reactor-protective-system' trip

setpointsfor-allowable-increases in: radial-peaking factors.

This' report has been; prepared in accordance-with the-i requirementsfof, Technical; Specification 5.9.5. Tne -ore operatink 'simitsihave been developed-'using the NRC methodologies" listed in-Technical' Specification 5 ".5.b.

2.0. CORE-OPERATING LIMITS LTheivolues!and. limits presented within this section:have been; derived.using;.the NRC - approved methodologies listed

-1nlTechnicalLSpecification 5.9.5.- All; values and limits in

.thisLsectioniapp'y to Cycle 14-operation. Cycle 14'must be.

operated-within Y'e-bounds of these limits and all.others-specif;ed in:the:Technica1 LSpecifications.

l:

l

[ ' FC/TDB R2

FORT CALHOUN STATION TDB-VI TECHNICAL DATA BOOK PAGE 6 OF 13 3.0 TM/LP LIMIT The TM/LP coefficients for Cycle 14 are shown below:

Table 1 Coefficient '1Re a 29.73

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

P VAR = 29.73 PF(B) A1(Y) B + 18.44T ig -11325 PF(B) = 1.0 B2100%

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

= 1.4 BS50%

A1(Y) = -0.35294Y 1 + 1.08824 Yi 5 0.:3

= 0.57143Y 1 + 0.875 Y1 > 0.25 Where:

B = High Auctioneered thermal (AT) or Nuclear Power, % of rated power Y = Axial Shape Index, asiu T IN = Core Inlet Temperature, 'F P VAR = Reactor Coolant System Pressure, psia 4.0 MAXIMUM CORE INLET TEMPERATURE The maximum core inlet temperature (T:3) for Cycle 14 shall not exceed 543*F.

This limit is no'c applicable during either a thermal power ramp in excess of 5% of rated thermal powc_ per minute or a thermal power step 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.

6.0 LINEAR HEAT RATE The allowable peak linear heat rate vs. burnup is 14.4 kw/ft for Cycle 14 for all burnup points as shown on Figure 3.

FC/TOB R2

l .

FORT CALL!OUN STATION TDD-VI TECl!NICAL DATA BOOK PAGE 7 OF 13 7.0 EXCORE MONITORING OF LHR The allowable operation for power versus axial shape index for monitoring of LHR with excore detectors for Cycle 14 is shown in Figure 4.

8.0 PEAKING FACTOR LIMITS

/~

The maximum full power T values for the unrodded planar radial peaking factor (FxY ) and integrated radial peaking factor Fg) T are shown in Table 2.

Table 2 Maximum Full Power F g and Fgy_3imits Peakina Factol Limits F xY T 1.85 F gT 1.79 9.0 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. _

10. 0 ExyT. P p T AND CORE POWER LIMITATIONS Core power limitations versus F gT and FxyT are shown in Figure 6.

11.0 REFUELING BORON CONCENTRATION The refueling boron concentration must be maintained with a boron concentration of at least 1700 ppm in the Reactor Coolant System to ensure a shutdown margin of not less than 5% with all CEAs Uithdrawn.

FC/TDB R2

~

FORT CALHOUN STN."!ON TDB-VZ TECHNICAL DATA BCOK- PAGE 8.OF 13 590 ASl = -0.06 580 3 N. s ..

~

LLI 570 b

560 N \

uJ

' \ N N \

N \

\ \ 2400 psia

'N N

\

a s.O x '\ 2250 psia

$ s 2100 psia 530 0

0 -

tu

\ 1750 psia

.O .

510 P

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

PvAg = 29.73PF(B)A1(Y)B + 18.44Tm ~ 11325 ,

PF(B) = 1.0 B 2.100%

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

= 1.4 8 150%

A1(Y) = -0.35?94); + 1.08824 Yi s.25

= 0.57143Y + 0.875 Yi > .25 R2 n CYCLE 14- THERMAL MARGIN / LOW PRESSURE FIGURE 4 PUMP OPERATION 1 COLR

l FORT CADIOUN STATION TDB-VI TECHN! CAL DATA BOOK PAGE 9 OF 13

- 126 A

- 100.8 LONG TERM STEADY STATE ,

[ l INSERTION UMIT ,-,'

S - 75.6 l

8 l ,-,'

S '

126 - 50.4 l ,N f . ,_

, '/

$ - 100.8 - 25.2 l o ,

,* j' ~

l 5 l ,

• / PDll or TRANSIENT INSERTION UMIT E E - 75.6 -0 l,,

$ S -

T x g - 50 4 ~

W ,- EMERGENCY BORATION LIMIT

• p .' (12* BELOW PDll- REFERTO AOP-3) e ,26 - 25.2 m .

2 on t::

v) - 100.8 - 0 O

O.

$ E - 75.6 O $

a: e 0 0 - 50.4 6

" - s2 1m  :

b0 - 100 a

~

g - 75.6 8

o - 50.4 .

- 25.2

-0 0 20 40 60 80 100 REACTOR POWER (% OF ALLOWED POWER)

R2 CYCLE 14 FIGURE POWER DEPENDENT INSERTION LIMIT COLR 2

i

~ '

FORT CALHCN STATION TDB-Vi TECHNICAL i .sTA BOOK PAGE 10 OF 13 E

16 UNACCEPTABLE OPERATION 7- 14.4 KW/FT L

ua -

14 g

7 m

k us ACCEPTABLE OPERATION r

-en d

h 13 12

-0 5000 10000- 15000 20000 BURNUP (MWD /MTU)

R2 CYCLE 14 ALLOWABLE PEAK LINEAR HEAT RATE FIGURE COLR~ VS. BURNUP - -3

~

+ -

TORT CALHOUN STATION B 1 pgg 3 TECHNICAL DATA BOOK 110 100 kr W 90 1.

) . .

. (_.os, so)

O , (,3, so)

D- 80 W

0" 70 ( .2,70) (.2,70)

O O

W 60 0J

.,a 50 4

u.

O. 40

[ y.

Z

't W 30 O

tr W

1 L. 20 10 0 i

.4 .2 0 .2 .4 w

AX1AL SHAPE INDEX (ASIU) R2 CYCLE 14 FIGURE 7' HCORE MONWRING OF LHR 4

.COLR - -

FORT CAUiOUN STATION TOB-VI -

TECHNICAL DATA BOOK PAGE la OF 13 l

110 100

(' " I I ' ' I f

90 m

W I 5 80

( )

o j k / \

W 70 E

( .1 s) .15,eo)

O 60 "

O W

g 50 o

_.i

-3 40

<C u

O 30 H

Z W 20 0

E W

n. 10 0

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

NOTE: WHEN BASSS IS OPERABLE THIS FIGURE IS SUPERSCEDED BY THE BASSS DNB ALLOW-ABLE POWER VALUE CYCLE 14 '

2 DNB MONITORING 5 -

L COLR

FORT CALHOUN STATION TDB-VI

. TECHNICAL DATA BOOK PAGE 13 OF 13 110 prT pT U MIT LIMIT 100 DC W 90 (1.79,90) (1.85, M)

! 5 O

~

1 80 tu CC (1.93,75) (2.01, 75) h 70 Q

LM g 60 0J

-I 50

<C Lt.

O 40 l--

Z , _

tu o 30 0"

W 0- 20 10 0

1.75 1.80 1.85 1.90 1.95 2.00 2.05 Fxy T

and FrT R2

CYCLE 14 p T, p,T, AND CORE POWER LIMITATIONS FIGURE ,

COLR 6

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