DCL-06-077, Core Operating Limits Report Unit 1, Cycle 14, Revision 1; and Core Operating Limits Report Unit 2, Cycle 14, Revision 0

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Core Operating Limits Report Unit 1, Cycle 14, Revision 1; and Core Operating Limits Report Unit 2, Cycle 14, Revision 0
ML061710469
Person / Time
Site: Diablo Canyon  Pacific Gas & Electric icon.png
Issue date: 06/08/2006
From: Becker J
Pacific Gas & Electric Co
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
DCL-06-077
Download: ML061710469 (26)
v • d • e


Text

Pacific Gas and Electric Company' James R. Becker Diablo Canyon Power Plant Vice President P.0. Box 56 Diablo Canyon Operations and Avila Beach, CA 93424 Station Director 805.545.3462 June 8, 2006 Fax: 805.545.4234 PG&E Letter DCL-06-077 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Docket No. 50-275, OL-DPR-80 Docket No. 50-323, OL-DPR-82 Diablo Canyon Units 1 and 2 Core Operatinq Limits Report Unit 1, Cycle 14, Revision 1: and Core Operating Limits Report Unit 2, Cycle 14, Revision 0

Dear Commissioners and Staff:

In accordance with Diablo Canyon Power Plant Technical Specification 5.6.5.d, enclosed is the Core Operating Limits Report for Unit 1, Cycle 14, Revision 1; and Core Operating Limits po Unit 2, Cycle evision 0.

Sincer y, James R. B cker ddm/2254/A0639454 Enclosure cc/enc: Edgar Bailey, DHS Terry W. Jackson, NRC Senior Resident Inspector Bruce S. Mallett, NRC Region IV Alan B. Wang, NRR Project Manager cc: Diablo Distribution A member of the STARS (Strategic Teaming and Resource Sharing) Alliance Callaway

  • Comanche Peak
  • Diablo Canyon
  • Palo Verde
  • Wolf Cree

Enclosure PG&E Letter DCL-06-077 CORE OPERATING LIMITS REPORT (COLR)

DIABLO CANYON POWER PLANT UNIT 1, CYCLE 14, REVISION 1 (12 Pages)

UNIT 2, CYCLE 14, REVISION 0 (12 Pages)

EFFECTIVE DATE MAY 9,2006

      • ISSUED FOR USE BY: DATE: EXPIRES:.____

PACIFIC GAS AND ELECTRIC COMPANY NUMBER COLR 1-14 NUCLEAR POWER GENERATION REVISION 1 DIABLO CANYON POWER PLANT PAGE 1 OF 12 CORE OPERATING LIMITS REPORT, UNIT TITLE: COLR for Diablo Canyon Unit 1 Cycle 14 1 EFFECPOEU C IQR PROCEDURE CLASSIFICATION: QUALITY RELATED

1. CORE OPERATING LIMITS REPORT This Core Operating Limits Report (COLR) for Diablo Canyon Unit I Cycle 14 has been prepared in accordance with the requirements of Technical Specification (TS) 5.6.5.

The Technical Specifications affected by this report are listed below:

3.1.1 - Shutdown Margin (MODE 2 with keff < 1.0, MODES 3,4, and 5) 3.1.3 - Moderator Temperature Coefficient 3.1.4 - Rod Group Alignment Limits 3.1.5 - Shutdown Bank Insertion Limits 3.1.6 - Control Bank Insertion Limits 3.2.1 - Heat Flux Hot Channel Factor - FQ(Z) 3.2.2 - Nuclear Enthalpy Rise Hot Channel Factor - FN All 3.2.3 - Axial Flux Difference - (AFD) 3.9.1 - Boron Concentration

2. OPERATING LIMITS The cycle-specific parameter limits for the TS listed in Section 1 are presented in the following subsections. These limits have been developed using the NRC-approved methodologies specified in TS 5.6.5.

.2.1 Shutdown Margin (SDM) (TS 3.1.1)

The SDM limit for MODE 2 with kff < 1.0, MODES 3 and 4 is:

2.1.1 The shutdown margin with Safety Injection enabled shall be greater than or equal to 1.6% Ak/k.

2.1.2 In Modes 3 or 4 the shutdown margin with Safety Injection blocked shall be greater than or equal to 1.6% Ak calculated at a temperature of 2001F.

The SDM limit for MODE 5 is:

2.1.3 The shutdown margin shall be greater than or equal to 1.0% Ak/k. However, an administrative value of 1.6 % Ak/k will be used to address concerns of NSAL-02-014.

2.2 Shutdown Margin (SDM) (TS 3.1.4,3.1.5,3.1.6)

The SDM for MODE 1 and MODE 2 with kff_> 1.0 is:

2.2.1 The shutdown margin shall be greater than or equal to 1.6% Ak/k.

C9GSXDOI.DOA 04B 0505.1044

PACIFIC GAS AND ELECTRIC COMPANY NUMBER COLR-1-14 DIABLO CANYON POWER PLANT REVISION 1 PAGE 2 OF 12 TITLE: COLR for Diablo Canyon Unit I Cycle 14 UNIT 1 2.3 Moderator Temperature Coefficient (MTC) (TS 3.1.3)

The MTC limit for MODES 1, 2, and 3 is:

2.3.1 The MTC shall be less negative than -3.9x 104 Ak/k/°F for all rods withdrawn, end of cycle life (EOL), RATED THERMAL POWER condition.

2.3.2 The MTC 300 ppm surveillance limit is -3.0x10 4 Ak/k/°F (all rods withdrawn, RATED THERMAL POWER condition).

2.3.3 The MTC 60 ppm surveillance limit is -3.72xl 04 Ak/k/°F (all rods withdrawn, RATED THERMAL POWER condition).

2.4 Shutdown Bank Insertion Limits (TS 3.1.5) 2.4.1 Each shutdown bank shall be withdrawn to at least 225 steps.

2.5 Control Bank Insertion Limits (TS 3.1.6) 2.5.1 The control banks shall be limited in physical insertion as shown in Figure 1.

2.6 Heat Flux Hot Channel Factor - FQ(Z) (TS 3.2.1)

FRP 2.6.1 FQ (Z)< " *K(Z) for P > 0.5 P

Fo(Z)<Q.5*K(Z) forPO0.5 where: P = THERMAL POWER RATED THERMAL POWER FRTP =2.58 Q

K(Z) = 1.0 NOTE: The W(Z) data is appropriate for use only if the predicted axial offset is within

+/-3% of the measured value.

2.6.2 The W(Z) data for Relaxed Axial Offset Control (RAOC) operation, provided in Tables 2A and 2B are sufficient to determine the RAOC W(Z) versus core height for Cycle 14 burnups through the end of full power reactivity plus a power coast down of up to 1000 MWD/MTU.

Table 1 shows FQ margin decreases that are greater than 2% per 31 Effective Full Power Days (EFPD). These values shall be used to increase FQ' (Z) per SR 3.2.1.2. A 2% penalty factor shall be used at all cycle bumups that are outside the range of Table 1.

C9GSXDOI.DOA 04B 0505.1044

PACIFIC GAS AND ELECTRIC COMPANY NUMBER COLR 1-14 DIAIBLO CANYON POWER PLANT REVISION 1 PAGE 3 OF 12 TITLE: COLR for Diablo Canyon Unit 1 Cycle 14 UNIT 1 2.6.3 FQ(Z) shall be evaluated to determine if it is within its limits by verifying that F (Z) and F W (Z) satisfy the following:

a. Using the moveable incore detectors to obtain a power distribution map in MODE 1.
b. Increasing the measured FQ(Z) component of the power distribution map by 3% to account for manufacturing tolerances and further increasing the value by 5% to account for measurement uncertainties.
c. Satisfying the following relationship:

F*(Z) < FQTP *K(Z) for P > 0.5 Q4 P

  • 5FTP FC *]*K(Z) forP*<0.5 FQ(Z)

Q 0.5 F

WRI(Z) < F *K(Z) for P> 0.5 Q P F-(Z) -ý *K(Z) for P .0.5 Q 0.5 where:

F C (Z) is the measured FQ(Z) increased by the allowances for manufacturing tolerances and measurement uncertainty.

FRTP is the FQ limit K(Z) is the normalized FQ(Z) as a function of core height P is the relative THERMAL POWER, and F W (Z) is the total peaking factor, F C (Z), multiplied by W(Z) which QQ gives the maximum FQ(Z) calculated to occur in normal operation.

W(z) is the cycle dependent function that accounts for power distribution transients encountered during normal operation.

FRTP and K(Z) are specified in 2.6.1 and W(Z) is specified in 2.6.2.

Q C9GSXDOI.DOA 04B 0505.1044

PACIFIC GAS AND ELECTRIC COMPANY NUMBER COLR-1-14 DIABLO CANYON POWER PLANT REVISION 1 PAGE 4 OF 12 TITLE: COLR for Diablo Canyon Unit I Cycle 14 UNIT 1 2.7 Nuclear Enthalpy Rise Hot Channel Factor - FH 2.7 ucler F~ (Ts 3.2.2)

FNTP F *[1I+ PFmH * (I-P)]

where:

- THERMAL POWER RATED THERMAL POWER FN = Measured values of FN obtained by using the moveable incore detectors to AH A obtain a power distribution map.

FRTP = 1.59 (includes the 4% measurement uncertainty)

AH PFA = 0.3 = Power Factor Multiplier 2.8 Power Distribution Measurement Uncertainty (TS 3.2.1. and TS 3.2.2):

If the Power Distribution Monitoring System (PDMS) is OPERABLE, the uncertainty, N

UFp, to be applied to the Nuclear Enthalpy Rise Hot Channel Factor, FAN_, shall be calculated by the following formula:

UFAU =1.0 i UAf 100.0 where: UH = Uncertainty for enthalpy rise as defined in equation (5-19) in Reference 6.2 and F RTP = 1.65 for PDMS (in the above Section 2.7 equation).

AH If the PDMS is OPERABLE, the uncertainty, UFQ, to be applied to the Heat Flux Hot Channel Factor, FQ(z), shall be calculated by the following formula:

UFO=1.0+ 100.0U where: UQ = Uncertainty for power peaking factor as defined in equation (5-19) in Reference 6.2.

U= Engineering uncertainty factor

= 1.03 N

If the PDMS is inoperable, the Nuclear Enthalpy Rise Hot Channel Factor, FA , shall be calculated as specified in Section 2.7.

If the PDMS is inoperable, the Heat Flux Hot Channel Factor, FQ(Z), shall be calculated as specified in Section 2.6.

C9GSXDOI.DOA 04B 0505.1044

PACIFIC GAS AND ELECTRIC COMPANY NUMBER COLR 1-14 DIABLO CANYON POWER PLANT REVISION 1 PAGE 5 OF 12 TITLE: COLR for Diablo Canyon Unit 1 Cycle 14 UNIT 1 2.9 Axial Flux Difference (TS 3.2.3) 2.9.1 The Axial Flux Difference (AFD) Limits are provided in Figure 2.

2.10 Boron Concentration (TS 3.9.1)

The refueling boron concentration of the Reactor Coolant System, the refueling canal, and the refueling cavity shall be maintained within the more restrictive of the following limits:

2.10.1 A kfr of 0.95 or less, with the most reactive control rod assembly completely withdrawn, or 2.10.2 A boron concentration of greater than or equal to 2000 ppm.

3. TABLES 3.1 Table 1, "FQ Margin Decreases in Excess of 2% Per 31 EFPD."

3.2 Table 2A, "Load Follow W(Z) Factors at 150 and 4,000 MWD/MTU as a Function of Core Height."

3.3 Table 2B, "Load Follow W(Z) Factors at 10,000 and 17,800 MWD/MTU as a Function of Core Height."

4. FIGURES 4.1 Figure 1, "Control Bank Insertion Limits Versus Rated Thermal Power."

4.2 Figure 2, "AFD Limits as a Function of Rated Thermal Power."

5. RECORDS None
6. REFERENCES 6.1 NF-PGE-05-52, "Diablo Canyon Unit I Cycle 14 Final Reload Evaluation,"

July 25, 2005.

I

  • 6.2 WCAP-12473-A (Non-Proprietary), "BEACON Core Monitoring and Operations Support System," August, 1994.

C9GSXDO0.DOA 04B 0505.1044

PACIFIC GAS AND ELECTRIC COMPANY NUMBER COLRI-14 DIABLO CANYON POWER PLANT REVISION 1 PAGE 6 OF 12 TITLE: COLR for Diablo Canyon Unit I Cycle 14 UNIT 1 TABLE 1: FQ Margin Decreases in Excess of 2% Per 31 EFPD Cycle Max. % Decrease Bumup in FQ Margin (MWD/MI!U 476 2.00 638 2.06 801 2.35 964 2.59 1127 2.80 1289 2.97 1452 3.09 1615 3.17 1778 3.16 1940 3.09 2103 2.97 2266 2.80 2429 2.58 2591 2.33 2754 2.06 2917 2.00 NOTE: All cycle burnups outside the range of this table shall use a 2% decrease in FQ margin for compliance with SR 3.2.1.2. Linear interpolation is adequate for intermediate cycle burnups.

C9GSXDOI.DOA 04B 0505.1044

PACIFIC GAS AND ELECTRIC COMPANY NUMBER COLR 1-14 DIABLO CANYON POWER PLANT REVISION 1 PAGE 7 OF 12 TITLE: COLR for Diablo Canyon Unit I Cycle 14 UNIT 1 TABLE 2A: Load Follow W(Z) Factors at 150 and 4000 MWD/MTU as a Function of Core Height HEIGHT 150 MWD/MTU HEIGHT 4000 MWD/MTU (FEET) W(Z) (FEET) W(Z)

  • 0.0000 1.4374 *0.0000 1.4657
  • 0.2000 1.4329 *0.2000 1.4617
  • 0.4000 1.4250 *0.4000 1.4539
  • 0.6000 1.4150 *0.6000 1.4437
  • 0.8000 1.4029 *0.8000 1.4309 1.0000 1.3881 1.0000 1.4153 1.2000 1.3710 1.2000 1.3970 1.4000 1.3523 1.4000 1.3766 1.6000 1.3324 1.6000 1.3544 1.8000 1.3117 1.8000 1.3310 2.0000 1.2902 2.0000 1.3067 2.2000 1.2681 2.2000 1.2813 2.4000 1.2458 2.4000 1.2568 2.6000 1.2235 2.6000 1.2371 2.8000 1.1993 2.8000 1.2176 3.0000 1.1835 3.0000 1.1978 3.2000 1.1757 3.2000 1.1836 3.4000 1.1695 3.4000 1.1774 3.6000 1.1696 3.6000 1.1709 3.8000 1.1694 3.8000 1.1693 4.0000 1.1681 4.0000 1.1685 4.2000 1.1662 4.2000 1.1662 4.4000 1.1633 4.4000 1.1632 4.6000 1.1596 4.6000 1.1594 4.8000 1.1550 4.8000 1.1547 5.0000 1.1503 5.0000 1.1492 5.2000 1.1435 5.2000 1.1432 5.4000 1.1377 5.4000 1.1363 5.6000 1.1477 5.6000 1.1295 5.8000 1.1627 5.8000 1.1345
  • Top and Bottom 8% Excluded I

C9GSXDOI.DOA 04B 0505.1044

PACIFIC GAS AND ELECTRIC COMPANY NUMBER COLR"1-14 DIABLO CANYON POWER PLANT REVISION 1 PAGE 8 OF 12 TITLE: COLR for Diablo Canyon Unit I Cycle 14 UNIT I TABLE 2A: Load Follow W(Z) Factors at 150 and 4000 MWD/MTU as a Function of Core Height (Continued)

HEIGHT 150 MWD/MTU HEIGHT 4000 MWD/MTU (FEET) W(Z) (FEET) W(Z) 6.0000 1.1764 6.0000 1.1482 6.2000 1.1893 6.2000 1.1627 6.4000 1.2010 6.4000 1.1765 6.6000 1.2114 6.6000 1.1891 6.8000 1.2203 6.8000 1.2005 7.0000 1.2274 7.0000 1.2102 7.2000 1.2329. 7.2000 1.2183 7.4000 1.2366 7.4000 1.2250 7.6000 1.2380 7.6000 1.2295 7.8000 1.2369 7.8000 1.2316 8.0000 1.2331 8.0000 1.2312 8.2000 1.2263 8.2000 1.2281 8.4000 1.2165 8.4000 1.2221 8.6000 1.2056 8.6000 1.2119 8.8000 1.2011 8.8000 1.2091 9.0000 1.2019 9.0000 1.2141 9.2000 1.2088 9.2000 1.2333 9.4000 1.2122 9.4000 1.2554 9.6000 1.2202 9.6000 1.2773 9.8000 1.2403 9.8000 1.2981 10.0000 1.2660 10.0000 1.3165 10.2000 1.2894 10.2000 1.3297 10.4000 1.3136 10.4000 1.3373 10.6000 1.3339 10.6000 1.3495 10.8000 1.3512 10.8000 1.3579 11.0000 1.3625 11.0000 1.3656

  • 11.2000 1.3688 *11.2000 1.3784
  • 11.4000 1.3817 *11.4000 1.3808
  • 11.6000 "11.6000 L1 1.3869 1.3729
  • 11.8000 1.3816 "11.8000 1.3559
  • 12.0000 1.3789 *12.0000 1.3410
  • Top and Bottom 8% Excluded I

C9GSXDO1.DOA 04B 0505.1044

PACIFIC GAS AND ELECTRIC COMPANY NUMBER COLR 1-14 DIABLO CANYON POWER PLANT REVISION 1 PAGE 9 OF 12 TITLE: COLR for Diablo Canyon Unit I Cycle 14 UNIT 1 TABLE 2B: Load Follow W(Z) Factors at 10000 and 17800 MWD/MTU as a Function of Core Height HEIGHT 10000 MWD/MTU HEIGHT 17800 MWD/MTU (FEET) W(Z) (FEET) W(Z)

  • 0.0000 1.3373 *0.0000 1.3729
  • 0.2000 1.3391 *0.2000 1.3595
  • 0.4000 1.3371 *0.4000 1.3456
  • 0.6000 1.3327 *0.6000 1.3309
  • 0.8000 1.3258 *0.8000 1.3151 1.0000 1.3162 1.0000 1.3007 1.2000 1.3046 1.2000 1.2875 1.4000 1.2918 1.4000 1.2738 1.6000 1.2781 1.6000 1.2598 1.8000 1.2638 1.8000 1.2455 2.0000 1.2490 2.0000 1.2311 2.2000 1.2336 2.2000 1.2163 2.4000 1.2180 2.4000 1.2013 2.6000 1.2021 2.6000 1.1861 2.8000 1.1850 2.8000 1.1698 3.0000 1.1726 3.0000 1.1563 3.2000 1.1678 3.2000 1.1544 3.4000 1.1666 3.4000 1.1672 3.6000 1.1661 3.6000 1.1828 3.8000 1.1672 3.8000 1.1974 4.0000 1.1685 4.0000 1.2105 4.2000 1.1682 4.2000 1.2219 4.4000 1.1670 4.4000 1.2315 4.6000 1.1668 4.6000 1.2389 4.8000 1.1669 4.8000 1.2447 5.0000 1.1673 5.0000 1.2470 5.2000 1.1658 5.2000 1.2508 5.4000 1.1651 5.4000 1.2654 5.6000 1.1832 5.6000 1.2884 5.8000 1.2032 5.8000 1.3102
  • Top and Bottom 8% Excluded I

C9GSXDOI.DOA 04B 0505.1044

PACIFIC GAS AND ELECTRIC COMPANY NUMBER COLR'1-14 DIABLO CANYON POWER PLANT REVISION 1 PAGE 10 OF 12 TITLE: COLR for Diablo Canyon Unit 1 Cycle 14 UNIT I TABLE 2B: Load Follow W(Z) Factors at 10000 and 17800 MWD/MTU as a Function of Core Height (Continued)

HEIGHT 10000 MWD/MTU HEIGHT 17800 MWD/MTU (FEET) W(z) (FEET) W(Z) 6.0000 1.2197 6.0000 1.3284 6.2000 1.2354 6.2000 1.3443 6.4000 1.2491 6.4000 1.3571 6.6000 1.2608 6.6000 1.3669 6.8000 1.2703 6.8000 1.3734 7.0000 1.2777 7.0000 1.3767 7.2000 1.2827 7.2000 1.3768 7.4000 1.2854 7.4000 1.3733 7.6000 1.2851 7.6000 1.3658 7.8000 1.2818 7.8000 1.3543 8.0000 1.2753 8.0000 1.3387 8.2000 1.2656 8.2000 1.3192 8.4000 1.2527 8.4000 1.2958 8.6000 1.2352 8.6000 1.2674 8.8000 1.2232 8.8000 1.2433 9.0000 1.2226 9.0000 1.2281 9.2000 1.2301 9.2000 1.2271 9.4000 1.2424 9A000 1.2477 9.6000 1.2663 9.6000 1.2734 9.8000 1.2919 9.8000 1.2981 10.0000 1.3140 10.0000 1.3215 10.2000 1.3347 10.2000 1.3436 10.4000 1.3534 10.4000 1.3642 10.6000 1.3696 10.6000 1.3827 10.8000 1.3848 10.8000 1.4007 11.0000 1.3936 11.0000 1.4123

  • 11.2000 1.3927 '11.2000 1.4138
  • 11.4000 1.3896 "11.4000 1.4123
  • 11.6000 1.3747 *11.6000 1.3972
  • 11.8000 1.3466 *11.8000 1.3671
  • 12.0000 1.3216
  • 12.0000 1.3406
  • Top and Bottom 8% Excluded I

C9GSXDOI.DOA " 04B 0505.1044

. PACIFIC GAS AND ELECTRIC COMPANY NUMBER COLR 1-14 DIABLO CANYON POWER PLANT REVISION 1 PAGE 11 OF 12 TITLE: COLR for Diablo Canyon Unit 1 Cycle 14 UNIT 1 225

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- I 25 ..... ....Valid for Fully Withdrawn Rod (0 29 0) 221*Positions: >225 Steps And <231 Steps 0

0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 Fraction of Rated Thermal Power FIGURE 1: Control Bank Insertion Limits Versus Rated Thermal Power C9GSXDOI.DOA 04B 0505.1044

PACIMC GAS AND ELECTRIC COMPANY NUMBER COLRi1214 DIABLO CANYON POWER PLANT REVISION 1 PAGE 12 OF 12 TITLE: COLR for Diablo Canyon Unit 1 Cycle 14 UNIT 1 120 100 80 0

I-60 0~

Z01 40 20 0

-60 -50 30 -20 -10 0 10 20 30 40 50 60 Flux Difference (DELTA I) %

FIGURE 2: AFD Limits as a Function of Rated Thermal Power C9GSXDOI.DOA 04B 0505.1044

  • **ISSUED FOR USE BY: DATE: EXPIRES:____

PACIFIC GAS AND ELECTRIC COMPANY NUMBER COLR 2-14 NUCLEAR POWER GENERATION REVISION 0 DIABLO CANYON POWER PLANT PAGE 1 OF 12 CORE OPERATING LIMITS REPORT UNIT TITLE: COLR for Diablo Canyon Unit 2 Cycle 14 2 EFFEtTEDATE PROCEDURE CLASSIFICATION: QUALITY RELATED I. CORE OPERATING LIMITS REPORT This Core Operating Limits Report (COLR) for Diablo Canyon Unit 2 Cycle 14 has been prepared in accordance with the requirements of Technical Specification (TS) 5.6.5.

The Technical Specifications affected by this report are listed below:

3.1.1 - Shutdown Margin (MODE 2 with kfr< 1.0, MODES 3,4, and 5) 3.1.3 - Moderator Temperature Coefficient 3.1.4 - Rod Group Alignment Limits 3.1.5 - Shutdown Bank Insertion Limits 3.1.6 - Control Bank Insertion Limits 3.2.1 - Heat Flux Hot Channel Factor - FQ(Z) 3.2.2 - Nuclear Enthalpy Rise Hot Channel Factor - F N AH 3.2.3 - Axial Flux Difference - (AFD) 3.9.1 - Boron Concentration

2. OPERATING LIMITS The cycle-specific parameter limits for the TS listed in Section 1 are presented in the following subsections. These limits have been developed using the NRC-approved methodologies specified in TS 5.6.5.

2.1 Shutdown Margin (SDM) (TS 3.1.1)

The SDM limit for MODE 2 with krff < 1.0, MODES 3 and 4 is:

2.1.1 The shutdown margin with Safety Injection enabled shall be greater than or equal to 1.6% Ak/k.

2.1.2 In Modes 3 or 4 the shutdown margin with Safety Injection blocked shall be greater than or equal to 1.6% Ak/k calculated at a temperature of 2000 F.

The SDM limit for MODE 5 is:

2.1.3 The shutdown margin shall be greater than or equal to 1.0% Ak/k. However, an administrative value of 1.6 % Ak/k will be used to address concerns of NSAL-02-014.

D7KICO00.doa 04B 0509.0815

PACIFIC GAS AND ELECTRIC COMPANY NUMBER COLR 2-14 DIABLO CANYON POWER PLANT REVISION 0 PAGE 2 OF 12 TITLE: COLR for Diablo Canyon Unit 2 Cycle 14 UNIT 2 2.2 Shutdown Margin (SDM) (TS 3.1.4, 3.1.5, 3.1.6)

The SDM for MODE I and MODE 2 with kfr > 1.0 is:

2.2.1 The shutdown margin shall be greater than or equal to 1.6% Ak/k.

2.3 Moderator Temperature Coefficient (MTC) (TS 3.1.3)

The MTC limit for MODES 1, 2, and 3 is:

2.3.1 The MTC shall be less negative than -3.9xl 0 4 Ak/k/*F for all rods withdrawn, end of cycle life (EOL), RATED THERMAL POWER condition.

2.3.2 The MTC 300 ppm surveillance limit is -3.0x1 04 Ak/k/0 F (all rods withdrawn, RATED THERMAL POWER condition).

2.3.3 The MTC 60 ppm surveillance limit is -3.72xl 04 Ak/k/°F (all rods withdrawn, RATED THERMAL POWER condition).

2.4 Shutdown Bank Insertion Limits (TS 3.1.5) 2.4.1 Each shutdown bank shall be withdrawn to at least 225 steps.

2.5 Control Bank Insertion Limits (TS 3.1.6) 2.5.1 The control banks shall be limited in physical insertion as shown in Figure 1.

2.6 Heat Flux Hot Channel Factor - FQ(Z) (TS 3.2.1)

FRi7 2.6.1 F.,(Z)< -!-*K(Z) for P > 0.5 P

FR7 1 FQ (Z)< _ *K(Z) for P *0.5

0.5 where

P = THERMAL POWER RATED THERMAL POWER F RIP = 2.58 Q

K(Z) = 1.0 NOTE: The W(Z) data is appropriate for use only if the predicted axial offset is within

+/-3% of the measured value.

2.6.2 The W(Z) data for Relaxed Axial Offset Control (RAOC) operation, provided in Tables 2A and 2B are sufficient to determine the RAOC W(Z) versus core height for Cycle 14 burnups through the end of full power reactivity plus a power coast down of up to 1000 MWD/MTU.

Table I shows FQ margin decreases that are greater than 2% per 31 Effective Full Power Days (EFPD). These values shall be used to increase F W (Z) per SR 3.2.1.2. A 2% penalty factor shall be used at all cycle burnups that are outside the range of Table 1.

D7KICO00.doa 04B 0509.0815

PACIFIC GAS AND ELECTRIC COMPANY NUMBER COLR 2-14 DIABLO CANYON POWER PLANT REVISION 0 PAGE 3 OF 12 TITLE: COLR for Diablo Canyon Unit 2 Cycle 14 UNIT 2 2.6.3 FQ(Z) shall be evaluated to determine if it is within its limits by verifying that F C (Z) and F W (Z) satisfy the following:

a. Using the moveable incore detectors to obtain a power distribution map in MODE 1.
b. Increasing the measured FQ(Z) component of the power distribution map by 3% to account for manufacturing tolerances and further increasing the value by 5% to account for measurement uncertainties.

C. Satisfying the following relationship:

Q FRT' P*K(Z) for P > 0.5 F (Z) <5FRTP *K(Z) for P < 0.5 Q 0.5 W

F (Z) < F-RTP *K(Z) for P > 0.5 P

FW~ FRTP F (Z)5

< ,*K(Z)for P 5 0.5 Q 0.5 where:

FQ (Z) is the measured FQ(Z) increased by the allowances for manufacturing tolerances and measurement uncertainty.

F RTP is the FQ limit K(Z) is the normalized FQ(Z) as a function of core height P is the relative THERMAL POWER, and F Q (Z) is the total peaking factor, FC (Z), multiplied by W(Z) which gives the maximum FQ(Z) calculated to occur in normal operation.

W(z) is the cycle dependent function that accounts for power distribution transients encountered during normal operation.

FRT? and K(Z) are specified in 2.6.1 and W(Z) is specified in 2.6.2.

Q D7K1CO00.doa 04B 0509.0815

PACIFIC GAS AND ELECTRIC COMPANY NUMBER COLR 2-14 DIABLO CANYON POWER PLANT REVISION 0 PAGE 4 OF 12 TITLE: COLR for Diablo Canyon Unit 2 Cycle 14 UNIT 2 2.7 Nuclear Enthalpy Rise Hot Channel Factor - FANHH(TS 3.2.2)

FAH-FN AMP *[I + PFm * (l-P)]

RF where:

p = _

THERMAL POWER RATED THERMAL POWER to F All N = Measured values of FN A obtained by using the moveable incore detectors obtain a power distribution map.

F RTP = 1.59 (includes the 4% measurement uncertainty)

All PFAn = 0.3 = Power Factor Multiplier 2.8 Power Distribution Measurement Uncertainty (TS 3.2.1. and TS 3.2.2):

If the Power Distribution Monitoring System (PDMS) is OPERABLE, the uncertainty, UFAH, to be applied to the Nuclear Enthalpy Rise Hot Channel Factor, FNH, shall be calculated by the following formula:

UFA, =1.0. UAH 100.0 where: Um = Uncertainty for enthalpy rise as defined in equation (5-19) in Reference 6.2 and F RTP = 1.65 for PDMS (in the above Section 2.7 equation).

If the PDMS is OPERABLE, the uncertainty, UFQ, to be applied to the Heat Flux Hot Channel Factor, FQ(Z), shall be calculated by the following formula:

UFQ =(1.0+ U° t,100.01) J*U.

where: UQ = Uncertainty for power peaking factor as defined in equation (5-19) in Reference 6.2.

U. = Engineering uncertainty factor

= 1.03 If the PDMS is inoperable, the Nuclear Enthalpy Rise Hot Channel Factor, F N, shall be calculated as specified in Section 2.7.

If the PDMS is inoperable, the Heat Flux Hot Channel Factor, FQ(Z), shall be calculated as specified in Section 2.6.

DTKICO00.doa 04B 0509.0815

PACIFIC GAS AND ELECTRIC COMPANY NUMBER COLR 2-i4 DIABLO CANYON POWER PLANT REVISION 0 PAGE 5 OF 12 TITLE: COLR for Diablo Canyon Unit 2 Cycle 14 UNIT 2 2.9 Axial Flux Difference (TS 3.2.3) 2.9.1 The Axial Flux Difference (AFD) Limits are provided in Figure 2.

2.10 Boron Concentration (TS 3.9.1)

The refueling boron concentration of the Reactor Coolant System, the refueling canal, and the refueling cavity shall be maintained within the more restrictive of the following limits:

2.10.1 A kYr of 0.95 or less, with the most reactive control rod assembly completely withdrawn, or 2.10.2 A boron concentration of greater than or equal to 2000 ppm.

3. TABLES 3.1 Table 1, "FQ Margin Decreases in Excess of 2% Per 31 EFPD."

3.2 Table 2A, "Load Follow W(Z) Factors at 150 and 5,000 MWD/MTU as a Function of Core Height."

3.3 Table 2B, "Load Follow W(Z) Factors at 12,000 and 22,000 MWD/MTU as a Function of Core Height."

4. FIGURES 4.1 Figure 1, "Control Bank Insertion Limits Versus Rated Thermal Power."

4.2 Figure 2, "AFD Limits as a Function of Rated Thermal Power."

5. RECORDS None
6. REFERENCES 6.1 NF-PGE-06-9, "Diablo Canyon Unit 2 Cycle 14 Final Reload Evaluation, Revision 1,"

March, 2006.

I 6.2 WCAP-12473-A (Non-Proprietary), "BEACON Core Monitoring and Operations Support System," August, 1994.

D7KICO00.doa 04B 0509.0815

PACIFIC GAS AND ELECTRIC COMPANY NUMBER COLR 2-14 DIABLO CANYON POWER PLANT REVISION 0 PAGE 6 OF 12 TITLE: COLR for Diablo Canyon Unit 2 Cycle 14 UNIT 2 TABLE 1: FQ Margin Decreases in Excess of 2% Per 31 EFPD Cycle Max. % Decrease Bumup in FQ Margin (MWD/MTU) 0 2.34 150 2.34 313 2.61 475 2.86 638 3.04 800 3.16 963 3.21 1126 3.18 1288 3.07 1451 2.89 1614 2.64 1776 2.32 1939 2.00 NOTE: All cycle bumups outside the range of this table shall use a 2% decrease in FQ margin for compliance with SR 3.2.1.2. Linear interpolation is adequate for intermediate cycle bumups.

D7KICO00.doa 04B 0509.0815

PACIFIC GAS AND ELECTRIC COMPANY NUMBER COLR 2-14 DIABLO CANYON POWER PLANT. REVISION 0 PAGE 7 OF 12 TITLE: COLR for Diablo Canyon Unit 2 Cycle 14 UNIT 2 TABLE 2A: Load Follow W(Z) Factors at 150 and 5000 MWD/MTU as a Function of Core Height HEIGHT 150 MWD/MTU HEIGHT 5000 MWD/MTU (FEET) W(Z) (FEET) W(Z)

  • 0.0000 1.4943
  • 0.0000 1.4635
  • 0.2000 1.4891
  • 0.2000 1.4591
  • 0.4000 1.4809
  • 0.4000 1.4512
  • 0.6000 1.4708
  • 0.6000 1.4412
  • 0.8000 1.4588
  • 0.8000 1.4291 1.0000 1.4444 1.0000 1.4142 1.2000 1.4277 1.2000 1.3965 1.4000 1.4092 1.4000 1.3766 1.6000 1.3894 1.6000 1.3548 1.8000 1.3685 1.8000 1.3316 2.0000 1.3466 2.0000 1.3073 2.2000 1.3239 2.2000 1.2822 2.4000 1.3006 2.4000 1.2567 2.6000 1.2768 2.6000 1.2310 2.8000 1.2528 2.8000 1.2057 3.0000 1.2286 3.0000 1.1851 3.2000 1.2107 3.2000 1.1718 3.4000 1.2047 3.4000 1.1646 3.6000 1.2036 3.6000 1.1623 3.8000 1.2018 3.8000 1.1612 4.0000 1.1988 4.0000 1.1595 4.2000 1.1948 4.2000 1.1570 4.4000 1.1897 4.4000 1.1537 4.6000 1.1837 4.6000 1.1496 4.8000 1.1768 4.8000 1.1448 5.0000 1.1693 5.0000 1.1391 5.2000 1.1603 5.2000 1.1332 5.4000 1.1514 5.4000 1.1264 5.6000 1.1527 5.6000 1.1171 5.8000 1.1611 5.8000 1.1237
  • Top and Bottom 8% excluded.

D7KICO00.doa 04B 0509.0815

PACIFIC GAS AND ELECTRIC COMPANY NUMBER COLR 2-14 DIABLO CANYON POWER PLANT REVISION 0 PAGE 8 OF 12 TITLE: COLR for Diablo Canyon Unit 2 Cycle 14 UNIT 2 TABLE 2A: Load Follow W(Z) Factors at 150 and 5000 MWD/MTU as a Function of Core Height (Continued)

HEIGHT 150 MWD/MTU HEIGHT 5000 MWD/MTU (FEET) W(z) (FEET) W(Z) 6.0000 1.1710 6.0000 1.1406 6.2000 1.1798 6.2000 1.1566 6.4000 1.1875 6.4000 1.1718 6.6000 1.1940 6.6000 1.1860 6.8000 1.1998 6.8000 1.1990 7.0000 1.2058 7.0000 1.2106 7.2000 1.2117 7.2000 1.2206 7.4000 1.2156 7.4000 1.2289 7.6000 1.2175 7.6000 1.2352 7.8000 1.2174 7.8000 1.2394 8.0000 1.2149 8.0000 1.2412 8.2000 1.2100 8.2000 1.2406 8.4000 1.2027 8.4000 1.2374 8.6000 1.1927 8.6000 1.2305 8.8000 1.1806 8.8000 1.2266 9.0000 1.1687 9.0000 1.2270 9.2000 1.1616 9.2000 1.2296 9.4000 1.1614 9.4000 1.2413 9.6000 1.1633 9.6000 1.2527 9.8000 1.1644 9.8000 1.2596 10.0000 1.1609 10.0000 1.2696 10.2000 1.1560 10.2000 1.2871 10.4000 1.1610 10.4000 1.3024 10.6000 1.1747 10.6000 1.3161 10.8000 1.1916 10.8000 1.3292 11.0000 1.2045 11.0000 1.3385

  • 11.2000 1.2148
  • 11.2000 1.3436
  • 11.A000 1.2245
  • A1.000 1.3489
  • 11.6000 1.2258
  • 11.6000 1.3469
  • 11.8000 1.2189
  • 11.8000 1.3414
  • 12.0000 1.2119
  • 12.0000 1.3358
  • Top and Bottom 8% excluded.

D7KICO00.doa 04B 0509.0815

PACIFIC GAS AND ELECTRIC COMPANY NUMBER COLR 2-14 DIABLO CANYON POWER PLANT REVISION 0 PAGE 9 OF 12 TITLE: COLR for Diablo Canyon Unit 2 Cycle 14 UNIT 2 TABLE 2B: Load Follow W(Z) Factors at 12000 and 22000 MWD/MTU as a Function of Core Height HEIGHT 12000 MWD/MTU HEIGHT 22000 MWD/MTU (FEET) W(Z) (FEET) W(Z)

  • 0.0000 1.2534
  • 0.0000 1.3253
  • 0.2000 1.2518
  • 0.2000 1.3259
  • 0.4000 1.2501
  • 0.4000 1.3224
  • 0.6000 1.2484
  • 0.6000 1.3164
  • 0.8000 1.2441
  • 0.8000 1.3077 1.0000 1.2374 1.0000 1.2963 1.2000 1.2290 1.2000 1.2831 1.4000 1.2198 1.4000 1.2691 1.6000 1.2100 1.6000 1.2550 1.8000 1.1999 1.8000 1.2407 2.0000 1.1892 2.0000 1.2261 2.2000 1.1792 2.2000 1.2118 2.4000 1.1715 2.4000 1.1989 2.6000 1.1654 2.6000 1.1869 2.8000 1.1596 2.8000 1.1750 3.0000 1.1526 3.0000 1.1615 3.2000 1.1483 3.2000 1.1559 3.4000 1.1477 3.4000 1.1648 3.6000 1.1495 3.6000 1.1743 3.8000 1.1506 3.8000 1.1860 4.0000 1.1529 4.0000 1.1986 4.2000 1.1560 4.2000 1.2098 4.4000 1.1579 4.4000 1.2192 4.6000 1.1588 4.6000 1.2266 4.8000 1.1589 4.8000 1.2322 5.0000 1.1576 5.0000 1.2355 5.2000 1.1570 5.2000 1.2376 5.4000 1.1596 5.4000 1.2450 5.6000 1.1710 5.6000 1.2671 5.8000 1.1853 5.8000 1.2894
  • Top and Bottom 8% excluded.

D7KICO00.doa 04B 0509.0815

PACIFIC GAS AND ELECTRIC COMPANY NUMBER COLR 2-14 DIABLO CANYON POWER PLANT REVISION 0 PAGE 10 OF 12 TITLE: COLR for Diablo Canyon Unit 2 Cycle 14 UNIT 2 TABLE 28: Load Follow W(Z) Factors at 12000 and 22000 MWD/MTU as a Function of Core Height (Continued)

HEIGHT 12000 MWD/MTU HEIGHT 22000 MWD/MTU (FEET) W(Z) (FEET) W(Z) 6.0000 1.2002 6.0000 1.3078 6.2000 1.2154 6.2000 1.3243 6.4000 1.2287 6.4000 1.3381 6.6000 1.2402 6.6000 1.3492 6.8000 1.2500 6.8000 1.3574 7.0000 1.2576 7.0000 1.3626 7.2000 1.2632 7.2000 1.3645 7.4000 1.2673 7.4000 1.3630 7.6000 1.2692 7.6000 1.3580 7.8000 1.2686 7.8000 1.3492 8.0000 1.2654 8.0000 1.3367 8.2000 1.2596 8.2000 1.3206 8.4000 1.2510 8.4000 1.3008 8.6000 1.2398 8.6000 1.2778 8.8000 1.2260 8.8000 1.2506 9.0000 1.2175 9.0000 1.2240 9.2000 1.2167 9.2000 1.2078 9.4000 1.2151 9.4000 1.2050 9.6000 1.2204 9.6000 1.2066 9.8000 1.2280 9.8000 1.1970 10.0000 1.2332 10.0000 1.2024 10.2000 1.2374 10.2000 1.2326 10.4000 1.2400 10.4000 1.2636 0.6000 1.2431 10.6000 1.2921 10.8000 1.2471 10.8000 1.3116 11.0000 1.2489 11.0000 1.3227

  • 11.2000 1.2483
  • 11.2000 1.3324
  • 11.4000 1.2472
  • 11.4000 1.3396
  • 11.6000 1.2379
  • 11.6000 1.3329
  • 11.8000 1.2293
  • 11.8000 1.3101
  • 12.0000 1.2206
  • 12.0000 1.2872
  • Top and Bottom 8% excluded.

D7KIC0OO.doa 04B 00905 0509.0815

PACIFIC GAS AND ELECTRIC COMPANY NUMBER COLR 2-14 DIABLO CANYON POWER PLANT REVISION 0 PAGE 11 OF 12 TITLE: COLR for Diablo Canyon Unit 2 Cycle 14 UNIT 2 225 200 175 150 125 0

0.

100 C) cu 0) 75 50 25 0

0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 Fraction of Rated Thermal Power FIGURE 1: Control Bank Insertion Limits Versus Rated Thermal Power DTKICO00.doa 04B 0509.0815

PACIFIC GAS AND ELECTRIC COMPANY NUMBER COLR 2-14 DIABLO CANYON POWER PLANT REVISION 0 PAGE 12 OF 12 TITLE: COLR for Diablo Canyon Unit 2 Cycle 14 UNIT 2 120 1(-14,1o0) (+10,100) 100 UNACCEPTABLE I UNACCEPTABLE OPERATION OPERATION

  • ,80 a -ACCEPTABLE 0 _ OPERATION

.=60/

(- O; ))(+25,50)1 40 20 0

-60 -50 -40. -30 -20 -10 0 10 20 30 40 50 60 Flux Difference (DELTA I) %

FIGURE 2: AFD Limits as a Function of Rated Thermal Power D7KICO00.doa 04B 0509.0815

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