ML20059H735

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Rev 5 to COLR, Updating Min Boron Concentration to 1900 to Reflect Core Changes Prior to Cycle 15 Operation
ML20059H735
Person / Time
Site: Fort Calhoun Omaha Public Power District icon.png
Issue date: 10/23/1993
From: Weber W
OMAHA PUBLIC POWER DISTRICT
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ML20059H733 List:
References
NUDOCS 9401310135
Download: ML20059H735 (14)
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Fort Calhoun Station Unit No. 1 TDB;-VI TECHNICAL DATA BOOK PROCEDURE

Title:

CORE OPERATING LIMIT REPORT i

FC-68 Number: 41763 Reason for Change: Update minimum Boron Concentration to 1900 to reflect the core changes prior to Cycle 15 operation.

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Contact Person: William O. Weber

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ISSUED: 10-23-93 9:00 pm R5 9401310135 940114 F PDR ADDCK 05000285 ,

P PDR [0

9 FORT CALHOUN STATION ~

TDB-VI'

TECHNICAL DATA BOOK PROCEDURE ~ PAGE 1 OF 13.

Fort Calhoun Station, Unit 1 Cycle 14 Core Ocerating Limits Reoort 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.

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1 FC/TDB. R5  :

FORT CALHOUN STATION- TDB-VI-

. TECHNICAL DATA BOOK PROCEDURE PAGE 2 OF 13 i TABLE OF CONTENTS Item Descrintion page i 1.0 Introduction 5 2.0 Core Operating Limits 5 .

3.0 TM/LP Limit 6 l 4.0 Maximum Core Inlet Temperature 6 5.0 Power Dependent Insertion Limit 6 6.0 Linear Heat Rate 6 7.0 of LHR- 7- ,

8.0 Excore Peaking Monitoring Factor (Fx /, Fa') Limits 7 .;

9.0 DNB Monitoring 7 ';

10.0 Fe , F,/ and Core Power Limitations i

7 11.0 Refueling Boron Concentration 7 e

i i

a f

h FC/TDB R5 l

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

FORT CALHOUN STATION TDB-VI "* ,

. TECHNICAL DATA BOOK PROCEDURE- PAGE 3 OF 13- '

LIST OF TABLE c;

Table No. Title pgog  !

1- TM/LP Coefficients .

6 ,{

2 Maximum Fa and F,y Limits. -7

~!

t

.. l 3

i i

G r

F h

i r

f i

FC/TDB. R5 i i

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

.- FORT CALHOUN STATION TDB-VI

,, TECHNICAL DATA BOOK PROCEDURE PAGE 4 OF 13-LISTS OF FIGURES Zioure No. Title Page 1 Thermal Margin / Low Pressure 4 Pump Oneration 8 2 Power Dependent Insertion Limit 9 3 Allowable Peak Linear Heat Rate vs. Burnup 10 4 Excore Monitoring of LHR 11 5 DNB Monitoring 12 6 F,y , Fg and Core Power Limitations i i 13 i f

f l

l FC/TDB R5 .

l

TDB-VI

FORT CALHOUN. STATION  :

TECHNICAL DATA BOOK PROCEDURE PAGE 5 OF 13 .

'l CYCLE 14 CORE OPERATING LIMITS REPORT

1.0 INTRODUCTION

This report provides the cycle - specific limits-for operation of the Fort Calhoun Station Unit 1~for Cycle 14 operation. It includes limits for:

1.1 TM/LP LSSS 4 Pump Operation (Pyxa) 1.2 Core Inlet Temperature (Tn) 1.3 Power Dependent Insertion Limit (PDIL) 1.4 Allowable Peak Linear Heat Rate 1.5 Excore Monitoring of LHR ,

1.6 Planar Radial Peaking Factor (Fxy ) I i

1.7 Integrated Radial Peaking Factor (Fa) 1.8 DNB Monitoring 1.9 Fg jpxy versus Power Trade off curve T t 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 - specific coefficients used in the generation of certain reactor protective system trip q setpoints or allowable increases in radial peaking factors.

This report has been prepared in accordance with the requirements of Technical Specification 5.9.5. The core ,

operating limits have been developed-using the NRC methodologies listed in Technical Specification'5.9.5.b. .;

2.0 CORE 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 i this section apply to Cycle'14 operation. Cycle 14 must be operated within the bounds of these limits and allLothers -

specified in the Technical Specifications.

P FC/TDB -R5 i

g +-,.w-.-r-- _ w .- - - y e e +- __ m e n- m T

. 1

- -FORT CALHOUN' STATION TDB-VI-

.. TECHNICAL' DATA BOOK PROCEDURE PAGE 6 OF 13 I l

3.0 TM/LP LIMIT 1

The TM/LP coefficients for Cycle 14 are shown below: l 1

Table 1 Coefficient Value a -29.73 i 18.44 y -11325 I i

l The TM/LP setpoint is calculated by the Pun equation, shown l below and in Figure 1- 1 I

Pwa = 29.73 PF(B) A1(Y)B + 18.44Tno -11325 PF(B) = 1.0 B2100%

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

= 1.4 Bs50%

A1(Y) =

-0.35294Yi + 1.08824 Y3 s 0.25

= 0.57143Y1 + 0.875 Yi > 0.25 l

Where:

I B = High Auctioneered thermal (AT) or Nuclear Power, % of rated power Y = Axial Shape Index, asiu Tmi = Core Inlet-Temperature, *F Paa = Reactor Coolant System Pressure, psia i i

i 4.0 MAXIMUM CORE INLET TEMPERATURE j The maximum core inlet temperature (Tg) i for Cycle 14 shall not exceed 543*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. i 5.0 POWER DEPENDENT INSERTION LIMIT ]

1 The power dependent insertion limit is defined in Figure 2 for Cycle 14 operation.

1 FC/TDB RS

FORT CALHOUN STATION ..

TDB-VI

TECHNICAL DATA BOO

K. PROCEDURE

PAGE 7 OF 13 -

6.0 LINEAR HEAT RATE The.~ allowable peak linear heat rate vs. burnup for Cycle 14 is l 15.5 kW/ft for less than or equal to 7770 MWD /T, and 14.4 kW/ft-for greater tian 7770 MWD /T. The allowable peak linear heat rate for Cycle 14 is chown in Figure 3.

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.O PEAKING FACTOR LIMITS $

The maximum full power values for the unrodded planar radial peaking factor ( Fxy ) and integrated radial peaking factor FnD T

are shown in Table 2.

Table 2 Maximum Full Power F. and Fry Limits Peakina Factor Limits f

Fxy 1.85-7 Fa 1.76 '

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.'O ]ExY .

F.I'AND CORE POWER LIMITATIONS Core power limitations versus Fai and F XY are shown in Figure-6.

11.0 REFUELING BORON CONCENTRATION -- i The refueling boron concentration must be maintained with a boron concentration of at least 1900 ppm in the Reactor Coolant, l, l System to ensure a shutdown margin of not less'than 5% with all  :

l CEAs withdrawn.

FC/TDB R5 ,

-- __-_____---_--_-________-___--__=_.

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

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.. FORT CALHOUN STATION TDB-VI i TECHNICAL DATA BOOK PROCEDURE PAGE 8'OF 13 590 580 ASI = -0.06l 1 ,

11 I 570

$ ~

a E \ \

560 I

.m \ N N 0- .

N \ '

H 550 m.

O psia E 540 I

$ 2100 psia 530 O '

O -

uJ ,

E 520 0 \ 1750 psia O .

510

  • P 500 - -

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

PVAR = 29.73PF(B)A1(Y)B + 18.44Tn i - 11325  !

l PF(B) = 1.0 B 2.100% j

= .0088 + 1.8 50%< B<100%  !

= 1.4 8 s 50 %

A1(Y) = -0.35294Y i + 1.08824 Ya s .25

= 0.57143Yi + 0.875 Yi >.25 RS.

t CYCLE 14 THERMAL MARGIN / LOW PRESSURE - FIGURE l COLR 4 PUMP OPERATION 1 l t

+

FORT CALHOUN STATION .TDB-VI , ',

. TECHNICAL DATA BOOK PROCEDURE PAGE 9 OF 13

- 126 J

- 100.8 LC NG TfRM STEADYSTATE ,-

IN SERTION LIMIT

{g - 75.6 j ,

/

ISHOllTTEllM ,

' PP0ll

- 126 - 50.4 g

B l lNSERTIor I

i uMir ,'

/

$ - 100.8 - 25.2

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3 m - 75,s - 0 l

l ,

/ '/[ ' PDIL or TRANSil!NT .

INSHRTIOff UMIT

= s .1 '//<

- 50 4 ,

EMERG ENCY BORATION LIMIT z

c-

- 25.2 p

- 126 (25.2)

/ (12"IIELOVf PDIL - RETRTO AOF -3)

O,,,, (13 2 r -

5 -0 - 100.8 O i n.

g E - 75.6 l O 8 a: e .i O c - 50.4 w

U - 126 - 25.2 l

- 100.8 - 0

[ - 75.6 a

@ i 0 - 50.4

- 25.2 l

0 i 0 20 40 60 80 100 l

REACTOR POWER (% OF ALLOWED POWER)

R5 -!

CYCLE 14 POWER DEPENDENT INSERTION LIMIT FIGURE  :

COLR 2

rw , - - - . - . - -. ,. .- _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ . _ _ _ _ _ _ _ - - - _ - - _ _ _ ___________-___E.i__-

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FORT CALHOUN STATION TDB-Vi TECHNICAL DATA BOOK PAGE 10 OF 13 17 16 UNACCEPTABLE OPERATION

- 15.5 KW/FT k

m g 15 m

k u.

x 14.4 KW/FT g

$ 7770 MWD /MTU s

" ACCEPTABLE OPERATION 14 13 0 5000 10000 15000 20000 BURNUP (MWD /MTU) i

% l CYCLE 14 ALLOWABLE PEAK LINEAR HEAT RATE FIGURE l COLR VS. BURNUP 3 l

FORT CALHOUN STATION TDB-VI '

TECHNICAL DATA BOOK PROCEDURE PAGE 11 OF 13 110 100 W

LLI 90 3

O ( .os, so) (.1, 80)

Q- 80 UJ K

O 70 ( .2,70) (.2,70)

O W 60 3

O d 50 u.

O 40 l-Z W 30 0

x Lu D. 20 10 0 ,

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

R5 FIGURE CO R EXCORE MONITORING OF LHR

^

4 4

. FORT CALHOUN STABON TDB-VI TECHNICAL DATA BOOK PAGE 12 OF 13 110 l (0.0 100) (.15 100)

/ 1 5

g 80 / \

0 Q.

m 70 '

C O

O 60

0.3,60) g (-0.3,S8)

W 3 50 o

_a 3 40

<C LL O 30 l-Z d 20 g

W W

0. 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 R5 FIGURE COLR DNB MONITORING

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

. +

d-TDB-VI , ,

FORT CALHOUN. STATION PAGE 13 OF 13- i TECmiICAL DATA BOOK PROCEDURE 110 prT pxyT LIMIT LIMIT >

100 ,

W

.W 90 (1 78'90) (1 85'90) t O

80 111 W i O 70 (1 93,75) . (2.01,75) g t O

W y 60 0 ,

3 50 4  :

u.

O 4o F  :

Z LU .

o 30 .;

W i.u ,

0- 20 f

10 ,

i 0  :

1.75- 1.80 1.85 1.90 1.95 2.0O' ' 2.05 T T

[ Fxy and - Fr

' RS.  ;

l FIGURE' o CYCLE 14 p T, p,T, AND CORE POWER LIMITATIONS COLR 6-

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