DCL-04-167, Core Operating Limits Report Cycle 13

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Core Operating Limits Report Cycle 13
ML043500315
Person / Time
Site: Diablo Canyon Pacific Gas & Electric icon.png
Issue date: 12/07/2004
From: Becker J
Pacific Gas & Electric Co
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
DCL-04-167
Download: ML043500315 (19)
v • d • e


Text

WI Pacific Gas and

.1 an Electric Company James R.Becker Diablo Canyon Power Plant Vice President-Diablo Canyon PO. Box 56 Operations and Station Director Avila Beach, CA 93424 805.545.3462 Fax: 805.545.4234 December 7, 2004 PG&E Letter DCL-04-167 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Docket No. 50-323, OL-DPR-82 Diablo Canyon Unit 2 Core Operating Limits Report Unit 2, Cycle 13

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 2, Cycle 13.

Sin erely, C

-\ N James .Becker ddm/2254/A0621082 Enclosure cc/enc: Edgar Bailey', DHS William B. Jones Bruce S. Mallett David L. Prouix Girija S. Shukla cc: Diablo Distribution Ab A member of the STARS (Strategic Teaming and Resource Sharing) Alliance Callaway

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

Enclosure 1 PG&E Letter DCL-04-167 CORE OPERATING LIMITS REPORT (COLR)

DIABLO CANYON POWER PLANT UNIT 2, CYCLE 13, REVISION 0 (17 Pages)

EFFECTIVE DATE NOVEMBER 22, 2004

      • ISSUED FOR USE BY: DATE: EXPIRES:____

PACIFIC GAS AND ELECTRIC COMPANY NUMBER COLR 2-13 NUCLEAR POWER GENERATION REVISION 0 DIABLO CANYON POWER PLANT PAGE 1 OF 17 CORE OPERATING LIMITS REPORT UNIT TITLE: COLR for Diablo Canyon Unit 2 Cycle 13 2 11/22/04 EFFECTIVE DATE PROCEDURE CLASSIFICATION: QUALITY RELATED

1. CORE OPERATING LIMITS REPORT This Core Operating Limits Report (COLR) for Diablo Canyon Unit 2 Cycle 13 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 kff < 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 - FNH 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 I 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/k 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-02-0 14.

2.2 Shutdown Margin (SDM) for MODE I and MODE 2 (TS 3.1.4, 3.1.5, 3.1.6) with kff > 1.0 is:

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

AKU23AOO.DOA 04B 1117.1442

PACIFIC GAS AND ELECTRIC COMPANY NUMBER COLR 2-13 DIABLO CANYON POWER PLANT REVISION 0 PAGE 2 OF 17 TITLE: COLR for Diablo Canyon Unit 2 Cycle 13 UNIT 2 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 -3.9x104 Ak/k-/0 F for all rods withdrawn, end of cycle life (EOL), RATED THERMAL POWER condition.

2.3.2 The MTC 300 ppm surveillance limit is -3.0xl04 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/0 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) 2.6.1 FQ,(Z)<f *K(Z) forP>0.5 P

FRn7 FQ(Z)<-Y- *K(Z) for P < 0.5 where: P - THERMAL POWER RATED THERMAL POWER FRTP = 2.58 FQ K(Z) = 1.0 2.6.2 The W(Z) curves for Relaxed Axial Offset Control (RAOC) operation, provided in Figures 2 through 5, and Tables 2A and 2B are sufficient to determine the RAOC W(Z) versus core height for Cycle 13 burnups through the end of full power reactivity plus a power coastdown 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 FQ (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.

NOTE: That the W(Z) data is appropriate for use if the predicted axial offset is within +/-3% of the measured value.

AKU23AOO.DOA 04B I1117.1442

PACIFIC GAS AND ELECTRIC COMPANY NUMBER COLR 2-13 DIABLO CANYON POWER PLANT REVISION 0 PAGE 3 OF 17 TITLE: COLR for Diablo Canyon Unit 2 Cycle 13 UNIT 2 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 C(Z) < " ( for P>0.5 Q P F C(Z):5 ( for P < 0.5 Q 0.5 RTP F (Z)< FQ *K(Z) for P > 0.5 RTP Fw(Z)< FQ *FK(Z) forP <0.5 where:

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

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

AKU23AOO.DOA 04B 1117.1442

PACIFIC GAS AND ELECTRIC COMPANY NUMBER COLR 2-13 DIABLO CANYON POWER PLANT REVISION 0 PAGE 4 OF 17 TITLE: COLR for Diablo Canyon Unit 2 Cycle 13 UNIT 2 2.7 Nuclear Enthalpy Rise Hot Channel Factor (TS 3.2.2)

FN < FRTP *[l + pF. * (1lP)]

AH- AH where:

p THERMAL POWER RATED THERMAL POWER FNAH = Measured values of FNAHobtained by using the moveable incore detectors to obtain a power distribution map.

F RP = 1.59 PFAII = 0.3 2.8 Power Distribution Measurement Uncertainty (Technical Specifications 3.2.1. and 3.2.2):

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

UFAs, -"1 .0+ UA I 100.0 where: UAII = Uncertainty for enthalpy rise as defined in equation (5-19) in Reference 6.2.

and, F RTP = 1.65 for PDMS.

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:

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

Ue = Engineering uncertainty factor

= 1.03 If the PDMS is INOPERABLE, the Nuclear Enthalpy Rise Hot Channel Factor FN AH shall be calculated as specified in Section 2.7:

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

AKU23AOO.DOA 04B I1117.1442

PACIFIC GAS AND ELECTRIC COMPANY NUMBER COLR 2-13 DIABLO CANYON POWER PLANT REVISION 0 PAGE 5 OF 17 TITLE: COLR for Diablo Canyon Unit 2 Cycle 13 UNIT 2 2.9 Axial Flux Difference (TS 3.2.3) 2.9.1 The Axial Flux Difference (AFD) Limits are provided in Figure 6.

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 kff 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.

AKU23AOO.DOA 04B 1117.1442

PACIFIC GAS AND ELECTRIC COMPANY NUMBER COLR 2-13 DIABLO CANYON POWER PLANT REVISION 0 PAGE 6 OF 17 TITLE: COLR for Diablo Canyon Unit 2 Cycle 13 UNIT 2

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

3.2 Table 2A, "Load Follow W(Z) Factors at 150 and 3,000 MWD/MTU as a Function of Core Height."

3.3 Table 2B, "Load Follow W(Z) Factors at 10,000 and 18,000 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, "Load Follow W(Z) at 150 MWD/MTU as a Function of Core Height."

4.3 Figure 3, "Load Follow W(Z) at 3,000 MWD/MTU as a Function of Core Height."

4.4 Figure 4, "Load Follow N'(Z) at 10,000 MWDIMTU as a Function of Core Height."

4.5 Figure 5, "Load Follow W(Z) at 18,000 MWD/MTU as a Function of Core Height."

" A .. _A TI Y -- -. - " - -I' _ - .. -I_+:A nf -..... lt 4.6 Figure 0, -Ar) LLimS as a Function o0Ratedt I nernal rower.

5. RECORDS None
6. REFERENCES 6.1 NF-PGE-04-81, "Diablo Canyon Unit 2 Cycle 13 Final Reload Evaluation,"

July 27, 2004.

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

AKU23AOO.DOA 04B 1117.1442

PACIFIC GAS AND ELECTRIC COMPANY NUMBER COLR 2-13 DIABLO CANYON POWER PLANT REVISION 0 PAGE 7 OF 17 TITLE: COLR for Diablo Canyon Unit 2 Cycle 13 UNIT 2 TABLE 1: FQ Margin Decreases in Excess of 2% Per 31 EFPD Cycle Burnup Max. % Decrease (MWD/MTU) in F0 Margin 5355 2.00 5518 2.13 5681 2.20 5843 2.00

____________________________________I

___________________________________I 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.

AKU23AOO.DOA 04B 1117.1442

PACIFIC GAS AND ELECTRIC COMPANY NUMBER COLR 2-13 DIABLO CANYON POWER PLANT REVISION 0 PAGE 8 OF 17 TITLE: COLR for Diablo Canyon Unit 2 Cycle 13 UNIT 2 TABLE 2A- Load Follow W(Z) Factors at 150 and 3000 MWD/MTU as a Function of Core Height HEIGHT 150 MWD/MTU HEIGHT 3000 MWD/MTU (FEET) W(Z) (FEET) W(Z)

  • 0.0000 1.0000 *0.0000 1.0000
  • 0.2000 1.0000 *0.2000 1.0000
  • 0.4000 1.0000 *0.4000 1.0000
  • 0.6000 1.0000 *0.6000 1.0000
  • 0.8000 1.0000 *0.8000 1.0000
  • 1.0000 1.0000
  • 1.0000 1.0000
  • 1.2000 1.0000
  • 1.2000 1.0000
  • 1.4000 1.0000
  • 1.4000 1.0000
  • 1.6000 1.0000
  • 1.6000 1.0000
  • 1.8000 1.0000
  • 1.8000 1.0000 2.0000 1.3571 2.0000 1.3373 2.2000 1.3341 2.2000 1.3137 2.4000 1.3108 2.4000 1.2898 2.6000 1.2883 2.6000 1.2668 2.8000 1.2690 2.8000 1.2471 3.0000 1.2492 3.0000 1.2309 3.2000 1.2315 3.2000 1.2196 3.4000 1.2223 3.4000 1.2144 3.6000 1.2192 3.6000 1.2121 3.8000 1.2165 3.8000 1.2090 4.0000 1.2127 4.0000 1.2045 4.2000 1.2077 4.2000 1.1990 4.4000 1.2017 4.4000 1.1923 4.6000 1.1945 4.6000 1.1846 4.8000 1.1864 4.8000 1.1760 5.0000 1.1774 5.0000 1.1664 5.2000 1.1676 5.2000 1.1563 5.4000 1.1571 5.4000 1.1452 5.6000 1.1473 5.6000 1.1324 5.8000 1.1528 5.8000 1.1378 NOTE: W(Z) values given above for 150 and 3000 MWD/MTU are plotted in COLR Figures 2 and 3, respectively.
  • Top and Bottom 15% Excluded AKU23AOO.DOA 04B I1117.1442

PACIFIC GAS AND ELECTRIC COMPANY NUMBER COLR 2-13 DIABLO CANYON POWER PLANT REVISION 0 PAGE 9 OF 17 TITLE: COLR for Diablo Canyon Unit 2 Cycle 13 UNIT 2 TABLE 2A: Load Follow W(Z) Factors at 150 and 3000 MWDIMTU as a Function of Core Height (Continued)

HEIGHT 150 MWD/MTU HEIGHT 3000 MWD/MTU (FEET) W(Z) (FEET) W(Z) 6.0000 1.1651 6.0000 1.1519 6.2000 1.1737 6.2000 1.1620 6.4000 1.1819 6.4000 1.1719 6.6000 1.1889 6.6000 1.1807 6.8000 1.1945 6.8000 1.1881 7.0000 1.1987 7.0000 1.1942 7.2000 1.2011 7.2000 1.1986 7.4000 1.2019 7.4000 1.2012 7.6000 1.2015 7.6000 1.2029 7.8000 1.1992 7.8000 1.2027 8.0000 1.1946 8.0000 1.2003 8.2000 1.1878 8.2000 1.1957 8.4000 1.1786 8.4000 1.1888 8.6000 1.1665 8.6000 1.1789 8.8000 1.1551 8.8000 1.1709 9.0000 1.1511 9.0000 1.1713 9.2000 1.1537 9.2000 1.1778 9.4000 1.1523 9.4000 1.1802 9.6000 1.1518 9.6000 1.1853 9.8000 1.1492 9.8000 1.1893 10.0000 1.1469 10.0000 1.1905

  • 10.2000 1.0000
  • 10.2000 1.0000
  • 10.4000 1.0000 *10.4000 1.0000
  • 10.6000 1.0000 *10.6000 1.0000
  • 10.8000 1.0000 *10.8000 1.0000
  • I 1.0000 1.0000 *I 1.0000 1.0000
  • 11.2000 1.0000
  • 11.2000 1.0000
  • 11.4000 1.0000 *11.4000 1.0000
  • 11.6000 1.0000 *11.6000 1.0000
  • 11.8000 1.0000 *11.8000 1.0000
  • 12.0000 1.0000
  • 12.0000 1.0000 NOTE: W(Z) values given above for 150 and 3000 MWD/MTU are plotted in COLR Figures 2 and 3, respectively.
  • Top and Bottom 15% Excluded AKU23AOO.DOA 04B 1117.1442

PACIFIC GAS AND ELECTRIC COMPANY NUMBER COLR 2-13 DIABLO CANYON POWER PLANT REVISION 0 PAGE 10 OF 17 TITLE: COLR for Diablo Canyon Unit 2 Cycle 13 UNIT 2 TABLE 2B: Load Followv W(Z) Factors at 10000 and 18000 MWD/MTU as a Function of Core Height HEIGHT 10000 MWD/MTU HEIGHT 18000 MWD/MTU (FEET) W(Z) (FEET) W(Z)

  • 0.0000 1.0000 *0.0000 1.0000
  • 0.2000 1.0000 *0.2000 1.0000
  • 0.4000 1.0000 *0.4000 1.0000
  • 0.6000 1.0000 *0.6000 1.0000
  • 0.8000 1.0000 *0.8000 1.0000
  • 1.0000 1.0000
  • 1.0000 1.0000
  • 1.2000 1.0000
  • 1.2000 1.0000
  • 1.4000 1.0000
  • 1.4000 1.0000
  • 1.6000 1.0000
  • 1.6000 1.0000
  • 1.8000 1.0000
  • 1.8000 1.0000 2.0000 1.1935 2.0000 1.2316 2.2000 1.1836 2.2000 1.2157 2.4000 1.1740 2.4000 1.1996 2.6000 1.1646 2.6000 1.1833 2.8000 1.1551 2.8000 1.1656 3.0000 1.1495 3.0000 1.1521 3.2000 1.1477 3.2000 1.1510 3.4000 1.1478 3.4000 1.1635 3.6000 1.1526 3.6000 1.1785 3.8000 1.1585 3.8000 1.1925 4.0000 1.1635 4.0000 1.2047 4.2000 1.1674 4.2000 1.2152 4.4000 1.1702 4.4000 1.2238 4.6000 1.1717 4.6000 1.2302 4.8000 1.1720 4.8000 1.2345 5.0000 1.1709 5.0000 1.2373 5.2000 1.1696 5.2000 1.2392 5.4000 1.1703 5.4000 1.2417 5.6000 1.1801 5.6000 1.2479 5.8000 1.1918 5.8000 1.2611 NOTE: W(Z) values given above for 10000 and 18000 MWD/MTU are plotted in COLR Figures 4 and 5, respectively.
  • Top and Bottom 15% Excluded AKU23AOO.DOA 04B 1117.1442

PACIFIC GAS AND ELECTRIC COMPANY NUMBER COLR 2-13 DIABLO CANYON POWER PLANT REVISION 0 PAGE 11 OF 17 TITLE: COLR for Diablo Canyon Unit 2 Cycle 13 UNIT 2 TABLE 2B: Load Followv W(Z) Factors at 10000 and 18000 MWD/MTU as a Function of Core Height (Continued)

HEIGHT 10000 MWD/MTU HEIGHT 18000 MWD/MTU (FEET) W(Z) (FEET) W(Z) 6.0000 1.2030 6.0000 1.2758 6.2000 1.2140 6.2000 1.2873 6.4000 1.2232 6.4000 1.2969 6.6000 1.2307 6.6000 1.3042 6.8000 1.2365 6.8000 1.3091 7.0000 1.2403 7.0000 1.3115 7.2000 1.2422 7.2000 1.3115 7.4000 1.2440 7.4000 1.3094 7.6000 1.2481 7.6000 1.3043 7.8000 1.2510 7.8000 1.2959 8.0000 1.2513 8.0000 1.2846 8.2000 1.2495 8.2000 1.2695 8.4000 1.2456 8.4000 1.2514 8.6000 1.2395 8.6000 1.2387 8.8000 1.2317 8.8000 1.2313 9.0000 1.2213 9.0000 1.2246 9.2000 1.2105 9.2000 1.2145 9.4000 1.2078 9.4000 1.2027 9.6000 1.2125 9.6000 1.2027 9.8000 1.2194 9.8000 1.2103 10.0000 1.2238 10.0000 1.2169

  • 10.2000 1.0000
  • 10.2000 1.0000
  • 10.4000 1.0000 *10.4000 1.0000
  • 10.6000 1.0000 *10.6000 1.0000
  • 10.8000 1.0000
  • 10.8000 1.0000
  • 11.0000 1.0000
  • 11.0000 1.0000
  • 11.2000 1.0000
  • 11.2000 1.0000
  • 11.4000 1.0000
  • 11.4000 1.0000
  • 11.6000 1.0000
  • 11.6000 1.0000
  • 11.8000 1.0000
  • 11.8000 1.0000
  • 12.0000 1.0000
  • 12.0000 1.0000 NOTE: W(Z) values given above for 10000 and 18000 MWD/MTU are plotted in COLR Figures 4 and 5, respectively.
  • Top and Bottom 15% Excluded AKU23AOO.DOA 04B I1117.1442

PACIFIC GAS AND ELECTRIC COMPANY NUMBER COLR 2-13 DIABILO CANYON POWER PLANT REVISION 0 PAGE 12 OF 17 TITLE: COLR for Diablo Canyon Unit 2 Cycle 13 UNIT 2 225 (0.583,225)1.....

200

.. .. ) ...... ..... 1. 0 0 175 '.... . .A. C .. .

I-I 150 .. ...

BANANKD T . . . . . . . . . . .... . . . . .

Cn 125 a, (0 0.. 8) .... .. .. . . . . .. . . . ..

100 .. .. .. . . .. . .. . . .. . .. . .. . .. .. .. . .... . .

0 0~

75

..... .Valid.. foBul dA NK Rd . .. . . .

. .o Posit.. ns. 5.Se ps an. ..2 1 .2.Sep In

.. . . .. .. ._ ( 0 1._ 3 8 ) _.. _ __...

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 AKU23AOO.DOA 04SB 1117.1442 11742

PACIFIC GAS AND ELECTRIC COMPANY NUMBER COLR 2-13 DIABLO CANYON POWER PLANT REVISION 0 PAGE 13 OF 17 TITLE: COLR for Diablo Canyon Unit 2 Cycle 13 UNIT 2 1.4 ii - -I-i 1.3 I I N

I I

'§ 1.2 I 1 *I**.

_____ -. .1

  • I 1.1

______ I III 1.0 I I 0 2 4 6 8 10 12 Bottom Core Height (Feet) Top FIGURE 2: Load Follow W(Z) at 150 MWD/MTU as a Function of Core Height

  • Top and Bottom 15% Excluded AKU23AOO.DOA 04B 11.42 I1117.1442

PACIFIC GAS AND ELECTRIC COMPANY NUMBER COLR 2-13 DIABLO CANYON POWER PLANT REVISION 0 PAGE 14 OF 17 TITLE: COLR for Diablo Canyon Unit 2 Cycle 13 UNIT 2 1.4 1.3 N

I-1.2 I I I 7KK 0

'M 0

I I I

--K 0

CD

-1+.

CD 1.1

-- -- - -F-1.0 0 2 4 6 8 10 12 Bottom Core Height (Feet) Top FIGURE 3: Load Follow W(Z) at 3000 MWD/MTU as a Function of Core Height

  • Top and Bottom 15% Excluded AKU23AOO.DOA 04B I1117.1442

COMPANY AND ELECTRIC PACIFIC GAS PACIFIC GAS AND ELECTRIC COMPANY NUMBER COLR 2-13 DIABLO CANYON POWER PLANT REVISION 0 PAGE 15 OF 17 TITLE: COLR for Diablo Canyon Unit 2 Cycle 13 UNIT 2 I I 1.3 N . _I I _lI III I I 1 1.2 - - * - *

  • 0 "l- -! , -; - -

40 0 2 4 6 8 10 12 Bottom Core Height (Feet) Top FIGURE 4: Load Follow W(Z) at 10000 MWD/MTU as a Function of Core Height

  • Top and Bottom 15% Excluded AKU23AOO.DOA 04B 1117.1442

PACIFIC GAS AND ELECTRIC COMPANY NUMBER COLR 2-13 DIABLO CANYON POWER PLANT REVISION 0 PAGE 16 OF 17 TITLE: COLR for Diablo Canyon Unit 2 Cycle 13 UNIT 2 1.4 1.3  ;. I N

- - - - -. I c

SE1.

1.2

  • **I I...
  • I.

1.0 0 2 4 6 8 10 12 Bottom Core Height (Feet) Top FIGURE 5: Load Follow W(Z) at 18000 MWD/MTU as a Function of Core Height

  • Top and Bottom 15% Excluded AKU23AOO.DOA 04B 1117.1442

PACIFIC GAS AND ELECTRIC COMPANY NUMBER COLR 2-13 DIABLO CANYON POWER PLANT REVISION 0 PAGE 17 OF 17 TITLE: COLR for Diablo Canyon Unit 2 Cycle 13 UNIT 2 120 100 80 0~

3 ro a.

60 0

ix Mr 40 20 0

-60 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 Flux Difference (DELTA 1)%

FIGURE 6: AFD Limits as a Function of Rated Thermal Power AKU23AOO.DOA 04B 1117.1442

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