ML17328A819

Rev 1 to DC Cook Nuclear Plant Unit 1 Cycle 12 Core Operating Limits Rept.

ML17328A819
Person / Time
Site:	Cook
Issue date:	12/31/1990
From:	INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:
Shared Package
ML17328A820	List: ML17328A819 ML17334B391
References
NUDOCS 9012260211
Download: ML17328A819 (11)

Text

DONALD C. COOK NUCLEAR PLANT UNIT 1 CYCLE 12 CORE OPERATING LIMITS REPORT Revision 1 December 1990 90i22602ii 90i2i9 P13R AGOCK 050003i5 P

• PDR

COLR for DONALD C. COOK NUCLEAR PLANT UNIT 1 CYCLE 12) 1.0 CORE OPERATING LIMITS REPORT This Core Operating Limits Report for Donald C. Cook Nuclear Plant Unit 1 Cycle 12 has been prepared in accordance with the requirements of Technical Specification 6.9.1.11.

The Technical Specifications affected by this report are listed below:

3/4.1.1.4 Moderator Temperature Coefficient 3/4.1.3.1 Movable Control Assemblies Group Height 3/4.1.3.3 Rod Drop Time 3/4.1.3.4 Shutdown Rod Insertion Limits 3/4.1.3.5 Control Rod Insertion Limits 3/4.2.1 Axial Flux Difference 3/4.2.2 Heat Flux Hot Channel Factor 3/4.2.3 Nuclear Enthalpy Hot Channel Factor 3/4.2.6 Allowable Power Level Page 1 of ll

COLR for Donald C. Cook Nuclear Plant Unit 1 Cycle 12 2.0 OPERATING LIMITS The cycle-specific parameter limits for the specifications listed in Section 1.0 are presented in the following subsections. These limits have been developed using the NRC-approved methodologies specified in Technical Specification 6.9.1.11.

2.1 Moderator Tem erature Coefficient (Specification 3/4.1.1.4) 2.1.1 The Moderator Temperature Coefficient (MTC) Limits are:

The BOL/ARO -MTC shall be less positive than the value given in Figure l.

The EOL/ARO/RTP-MTC shall be less negative than

-3.35E-4 Ak/k/ F.

This limit is based on a T avg program with HFP T

avg of 550 F where: ARO stands for All Rods Out BOL stands for Beginning of Cycle Life EOL stands for End of Cycle Life RTP stands for Rated Thermal Power HFP stands for Hot Full Thermal Power 2.1.2 The MTC Surveillance limit is:

The 300 ppm/ARO/RTP-MTC should be less negative than or equal to -2.70E-4 Ak/k/'F at a vessel average )

temperature of 550 F.

Page 2 of 11

COLR for Donald C. Cook Nuclear Plant Unit 1 Cycle 12 2.2 Rod Dro Time Dro Hei ht (Specification 3/4.1.3.3) 2.2.1 All rods shall be dropped from 228 steps.

2.3 Shutdown Rod Insertion Limit (Specification 3/4.1.3.4) 2.3.1 The shutdown rods shall be withdrawn to 228 steps.

2.4 Control Rod Insertion Limits (Specification 3/4.1.3.5, and 3/4.1.3.1) 2.4.1 The control banks shall be limited in physical insertion as shown in Figure 2.

2.4.2 Successive Control Banks shall overlap by 100 steps. The sequence for Control Bank withdrawal shall be Control Bank A, Control Bank B, Control Bank C, and Control Bank D.

2.5 Axial Flux Difference (Specification 3/4.2.1) 2.5.1 The Allowable Operation Limits are provided in Figure 3.

2.5.2 The AXIAL FLUX DIFFERENCE (AFD) target band during base load operations is +3Z, -3Z (not applicable for this cycle).

2.5.3 The AFD target band is +5Z, -5Z for core average accumulated burnup > 0.0 MWD/MTU Page 3 of 11

COLR for Donald C. Cook Nuclear Plant Unit 1 Cycle 12 )

2.6 Heat Flux Hot Channel Factor - F (Z) (Specifications 3.2.2)

CFQ F (Z)< ---

• K(Z) for P > 0.5 Q P F (Z)< 2

• CFQ

• K(Z) for P < 0.5 THERMAL POWER where: P RATED THERMAL POWER 2.6.1 CFQ 2.15 for Westinghouse fuel 2.6.2 K(Z) is provided in Figure 4 for Westinghouse fuel Page 4 of 11

COLR for Donald C. Cook Nuclear Plant Unit 1 Cycle 12 2.7 Nuclear Enthal Hot Channel Factor - F (Specification 3/4.2.3)

F < CFDH * (1 + PFDH * (1-P))

THERMAL POWER where: P RATED THERMAL POWER 2.7.1 CFDH 1.49 for Westinghouse fuel 2.7.2 PFDH 0.3 Page 5 of ll

COLR for Donald C. Cook Nuclear Plant Unit 1 Cycle 12 2.8 Allowable Power Level - APL (Specification 3.2.6)

APL min over Z for CFQ

• K(Z)

F (Z)

• V(Z)

• F p Q

2.8.1 V(Z) is provided in Table 1 for +5% AFD target band 2.8.2 CFQ and K(Z) are provided in COLR Sections 2.6.1 and 2.6.2, respectively 2.8.3 Fp is provided in Technica 1 Specif ication 3.2.6 Page 6 of 11

Moderator Temperature Coefficient (MTC)

MTC x 10 Ak/k/d6g.F f.00 Unac eptabl Oper tion 0.50 0.00 5 C o r 0 50 r

-1.00 Acc ptobla Opera on

-1.50

-2.00

-2.50

-3.00 0 io 20 30 40 50 60 70 80 90 ioo PERCENT RATED THERMAL POSER

0 (f MLLY WITHOAIWM) 0.55;228) 221 0 ~ ~ ~ ~ ~ << - ~ ~

~ ~

~

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4 4 (0, >25) 4 100 ~ ~ 00 0 SANK D'. 0 O

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-"::(o,o):

O.o 0.2 o,g o.e 0.8 4.0 (fULLY I

IN g g TII)) fRACTION OF RATKD THKRMAL I OWKR FZCURE 2 ROD INSERTION LIMITS VERSUS

'GKKIAL POWER 4 LOOP OPERATION Page 8 of ll

(o.o,x.o) (sio~loo)

(12 ~ 0,0 ~ 925) 10 12 CKK HSCHT (FT)

FIGURE 4 X{2) NOBÃALZXXD fg('Z) AS A FUNCTION OF CORE HZXGHT FOR MKSTZNGHOQSZ FUEL page 10 of 11