View source for DCL-19-037, Submittal of Core Operating Limits Report for Unit 1 Cycle 22

{{Adams
| number = ML19112A211
| issue date = 04/22/2019
| title = Submittal of Core Operating Limits Report for Unit 1 Cycle 22
| author name = Harbor C
| author affiliation = Pacific Gas &amp; Electric Co
| addressee name = 
| addressee affiliation = NRC/Document Control Desk, NRC/NRR
| docket = 05000275
| license number = DPR-080
| contact person = 
| case reference number = DCL-19-037
| document type = Fuel Cycle Reload Report, Letter type:DCL
| page count = 18
}}

=Text=
{{#Wiki_filter:Pacific Gas and Electric Company"'
Cary   . Harbor           Diablo Canyon Power Plant Interim Senior Director    Mail code 104/6/601 Engineering, Technical and P.O. Box 56 Emergency Services         Avila Beach, CA 93424 805.545.4102 Internal: 691.4102 April 22, 2019 PG&E Letter DCL-19-037 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Docket No. 50-275, OL-DPR-80 Diablo Canyon Power Plant Unit 1 Core Operating Limits Report for Unit 1 Cycle 22

==Dear Commissioners and Staff:==

In accordance with Diablo Canyon Power Plant (DCPP) Technical Specification 5.6.5.d, enclosed is the Core Operating Limits Report (COLR) for DCPP Unit 1, Cycle 22.
Pacific Gas and Electric Company makes no new or revised regulatory commitments (as defined by NEI 99-04) in this letter.
If there are any questions regarding the COLR, please contact Mr. Shannon Conner at (805) 545-6171.
Sincerely,
 /2=d~
Cary D. Harbor rntt/4231 Enclosure cc:        Diablo Distribution cc/enc:     Scott A. Morris, NRG Region IV Administrator Christopher W. Newport, NRG Senior Resident Inspector Balwant K. Singal, NRR Senior Project Manager A   member   of  the  STARS   Alliance Callaway
* Diablo Canyon
* Palo Verde
* Wolf Creek

Enclosure PG&E Letter DCL-19-037 DIABLO CANYON POWER PLANT CORE OPERATING LIMITS REPORT UNIT 1 CYCLE 22 EFFECTIVE DATE March 14, 2019

PACIFIC GAS AND ELECTRIC COMPANY                                                NUMBER      COLR 1 NUCLEAR POWER GENERATION                                                         REVISION    12 DIABLOCANYONPOWERPLANT                                                           PAGE        1 OF 16 CORE OPERATING LIMITS REPORT                                                     UNIT TITLE:       COLR for Diablo Canyon Unit 1 1
03/14/19 EFFECTIVE DATE CLASSIFICATION: QUALITY RELATED
: 1.      CORE OPERATING LIMITS REPORT 1.1     This Core Operating Limits Report (COLR) for the Diablo Canyon Unit 1 Cycle 22 redesign has been prepared in accordance with the requirements of Technical Specification (TS) 5.6.5.
1.2     The Technical Specifications affected by this report are listed below:
* 3.1.1 -   Shutdown Margin (MODE 2 with k,,ff< 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
* 3.1.8 - PHYSICS TESTING Exceptions - MODE 2
* 3.2.1 - Heat Flux Hot Channel Factor - FQ(Z)
* 3.2.2 - Nuclear Enthalpy Rise Hot Channel Factor - F      rH
* 3.2.3 - Axial Flux Difference - (AFD)
* 3.4.1 - RCS Pressure, Temperature, and Flow Departure from Nucleate Boiling (DNB) Limits
* 3.9.1 - Boron Concentration COLR lulrl2.DOC            04B   0307.1522

PACIFIC GAS AND ELECTRIC COMPANY                                                     NUMBER          COLR 1 DIABLO CANYON POWER PLANT                                                            REVISION        12 PAGE           2 OF 16 TITLE:       COLR for Diablo Canyon Unit 1                                           UNIT            1
: 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, 3.1.4, 3.1.5, 3.1.6, 3.1.8)
The SDM limit for MODE 1, MODE 2, MODE 3 and MODE 4 is:
2 .1 .1    The shutdown margin shall be greater than or equal to 1. 6% L'1k/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% L'1k/k calculated at a temperature of 200&deg;F.
The SDM limit for MODE 5 is:
2.1.3      The shutdown margin shall be greater than or equal to 1.6% t-.k/k. This limit addresses the concerns ofNSAL-02-014 (Reference 6.3) and the boron dilution analysis for RCS filled conditions.
In order to address RCS drained conditions for the boron dilution analysis, a minimum boron concentration of 1800 ppm shall be maintained whenever the RCS level is at or below the reactor vessel flange elevation (114 feet).
2.2        Moderator Temperature Coefficient (MTC) (TS 3 .1.3)
The MTC limit for MODES 1, 2, and 3 is:
2.2.1      The MTC shall be less negative than -3 .9xl 0-4 L'1k/k/&deg;F for all rods withdrawn, end of cycle life (EOL), RATED THERMAL POWER condition.
2.2.2      The MTC 300 ppm surveillance limit is -3.0xl0-4 L'1k/k/&deg;F (all rods withdrawn, RATED THERMAL POWER condition).
2.2.3      The MTC 60 ppm surveillance limit is -3.72x10-4 L'1k/k/&deg;F (all rods withdrawn, RATED THERMAL POWER condition).
2.3        Shutdown Bank Insertion Limits (TS 3.1.5) 2.3.1      Each shutdown bank shall be withdrawn to at least 225 steps.
2.4        Control Bank Insertion Limits (TS 3.1.6) 2.4.1      The control banks shall be limited in physical insertion as shown in Figure 1.
COLR lulrl2.DOC              04B    0307.1522

PACIFIC GAS AND ELECTRIC COMPANY                                                  NUMBER         COLR 1 DIABLOCANYONPOWERPLANT                                                            REVISION       12 PAGE           3 OF 16 TITLE:       COLR for Diablo Canyon Unit 1                                        UNIT           1 2.5     Heat Flux Hot Channel Factor -F 0 (Z) (TS 3.2.1)
FRTP 2.5.1      FQ(Z)<-Q-*K(Z)             for P> 0.5 p
pRTP FQ(Z)<-Q-*K(Z)             for Ps 0.5 0.5 THERMAL POWER where: P RATED THERMAL POWER F~TP = 2.58 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.
2.5.2     The W(Z) data for Relaxed Axial Offset Control (RAOC) operation, provided in Tables 2A, 2B and 2C are sufficient to determine the RAOC W(Z) versus core height for burnups through the end of full power reactivity plus a power coast down of up to 1200 MWD/MTU.
For W(Z) data at a desired bumup not listed in the table, but less than the maximum listed bumup, values at 3 or more burnup steps should be used to interpolate the W(Z) data to the desired bumup with a polynomial type fit that uses the W(Z) data for the nearest three bumup steps.
For W(Z) data at a desired bumup outside of the listed bumup steps, a linear extrapolation of the W(Z) data for the nearest two bumup steps can be used. If data are listed for only 2 bumup steps, a linear fit can be used for both interpolation and extrapolation.
The W(Z) values are generated assuming that they will be used for full power surveillance. When using a flux map instead of the Power Distribution Monitoring System (PDMS) for part power surveillance, the W(Z) values must be increased by the factor 1/P (P > 0.5) or 1/0.5 (P :S 0.5), where Pis the core relative power during the surveillance, to account for the increase in the F 0(Z) limit at reduced power levels.
Table 1 shows F0 margin decreases that are greater than 2% per 31 Effective Full Power Days (EFPD). These values shall be used to increase       Ft (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.
COLR lulrl2.DOC            048   0307.1522

PACIFIC GAS AND ELECTRIC COMPANY                                                  NUMBER          COLR 1 DIABLO CANYON POWER PLANT .                                                       REVISION 12 PAGE           4 OF 16 TITLE:       COLR for Diablo Canyon Unit 1                                        UNIT            1 2.5 .3    FQ(Z) shall be evaluated to determine if it is within its limits by verifying that g
F (Z) and Fi (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:
g F (Z) <
pRTP Q
                                                  *K(Z) p      for P > 0.5 pRTP   *K(Z)
FQC(Z):C:: Q             forP:c::0.5 0.5 W           pRTP F     (Z) < _Q_* K(Z)             for P > 0.5 Q             p pRTP FWQ(Z):C::-Q-*K(Z) forP:c::0.5

===0.5 where===
g F (Z) is the measured FQ(Z) increased by the allowances for manufacturing tolerances and measurement uncertainty.
FRTP Q
is the FQ limit K(Z) is the normalized FQ(Z) as a function of core height P is the relative THERMAL POWER, and Ft   (Z) is the total peaking factor, F g(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.
F~TP and K(Z) are specified in 2.5.1 and W(Z) is specified in 2.5.2.
COLR lulr12.DOC           048  0307.1522

PACIFIC GAS AND ELECTRIC COMPANY                                                     NUMBER         COLR 1 DIABLOCANYONPOWERPLANT                                                               REVISION       12 PAGE           5 OF 16 TITLE:       COLR for Diablo Canyon Unit 1                                           UNIT           1 2.6      Nuclear Enthalpy Rise Hot Channel Factor - F      rH   (TS 3.2.2)
FN     < FRTP *[1 + PF,,,H * (1-P)]
flH -   flH where:
p                   THERMAL POWER RATED THERMAL POWER F  rH       = Measured values of F    rH  obtained by using the moveable incore detectors to obtain a power distribution map.
                              = 1.586 (prior to including 4% uncertainty)
                              = 0.3 =  Power Factor Multiplier 2.7       Power Distribution Measurement Uncertainty (TS 3.2.1. and TS 3.2.2):
If the PDMS is OPERABLE, the uncertainty, UFMI, to be applied to the Nuclear Enthalpy Rise Hot Channel Factor, F     rH,  shall be calculated by the following formula:
where:     U.">H = Uncertainty for enthalpy rise as defined in equation (5-19) in Reference 6.2. However, if the uncertainty is less than 4.0, the uncertainty should be set equal to 4.0. F !Jl = 1.65 for PDMS (in the above Section 2.6 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    =(l .O+~]*ue 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, F         rH,  shall be calculated as specified in Section 2.6.
If the PDMS is inoperable, the Heat Flux Hot Channel Factor, Fq(Z), shall be calculated as specified in Section 2.5.
COLR lulrl2.DOC              048    0307.1522

PACIFIC GAS AND ELECTRIC COMPANY                                                     NUMBER        COLR 1 DIABLOCANYONPOWERPLANT                                                               REVISION      12 PAGE          6 OF 16 TITLE:       COLR for Diablo Canyon Unit 1                                           UNIT          1 2.8      Axial Flux Difference (TS 3.2.3) 2.8.1       The Axial Flux Difference (AFD) Limits are provided in Figure 2.
2.9      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:
2.9 .1      A keff of 0.95 or less, with the most reactive control rod assembly completely withdrawn, or 2.9.2       A boron concentration of greater than or equal to 2000 ppm.
2.10     RCS Pressure, Temperature and Flow Departure from Nucleate Boiling (DNB) Limit (TS 3.4.1) 2.10.1     Pressurizer pressure is greater than or equal to 2175 psig.
2.10.2     RCS average temperature is less than or equal to 581.7&deg;F.
2.10.3      RCS total flow rate is greater than or equal to 359,200 gpm.
NOTE: The DNB RCS TAvG limit is based on the slightly lower and bounding value associated with Unit 1 in order to have the same surveillance limits for both Unit 1 and Unit 2.
: 3.      TABLES 3.1      Table 1, "FQ Margin Decreases in Excess of2% Per 31 EFPD" 3.2      Table 2A, "Load Follow W(Z) Factors at 150 and 4000 MWD/MTU as a Function of Core Height" 3.3      Table 2B, "Load Follow W(Z) Factors at 8000 and 12000MWD/MTU as a Function of Core Height" 3.4      Table 2C, "Load Follow W(Z) Factors at 16000 and 20000 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-19-028, "Diablo Canyon Unit 1 Cycle 22 Redesign Reload Evaluation and Core Operating Limits Report," March 2019 6.2      WCAP-12472-P-A, Addendum 4, "BEACON Core Monitoring and Operation Support System, Addendum 4," September 2012                                   '
6.3      Westinghouse Nuclear Safety Advisory Letter NSAL-02-14, Revision 2, "Steam Line Break During Mode 3 for Westinghouse NSSS Plants," August 4, 2005 COLR lulrl2.DOC              04B   0307.1522

PACIFIC GAS AND ELECTRIC COMPANY                                                 NUMBER         COLR 1 DIABLO CANYON POWER PLANT                                                         REVISION       12 PAGE           7 OF 16 TITLE:       COLR for Diablo Canyon Unit 1                                        UNIT           1
: 7.      ANALYTICAL METHODS The analytical methods used to determine the core operating limits shall be those previously reviewed and approved by the NRC, specifically those described in the following documents:
7.1       WCAP-10216-P-A, Revision lA, "Relaxation of Constant Axial Offset Control F0 Surveillance Technical Specification," February 1994.
7.2       WCAP-9272-P-A, "Westinghouse Reload Safety Evaluation Methodology," July 1985.
7.3       WCAP-8385, "Power Distribution Control and Load Following Procedures," September 1974. Approved by NRC Safety Evaluation dated January 31, 1978.
7.4       WCAP-10054-P-A, "Westinghouse Small Break ECCS Evaluation Model Using the NOTRUMP Code," August 1985.
7.5       WCAP-10054-P-A, Addendum 2, Revision 1, "Addendum to the Westinghouse Small Break ECCS Evaluation Model Using the NOTRUMP Code: Safety Injection Into the Broken Loop and COSI Condensation Model," July 1997.
7.6       WCAP-12945-P-A, Volume 1 (Revision 2) and Volumes 2 - 5 (Revision 1), "Code Qualification Document for Best-Estimate LOCA Analysis," March 1998.
7.7       WCAP-12945-P-A, Addendum 1-A, Revision 0, "Method for Satisfying 10 CPR 50.46 Reanalysis Requirements for Best Estimate LOCA Evaluation Models," December 2004.
7.8       WCAP-8567-P-A, "Improved Thermal Design Procedure," February 1989.
7.9       WCAP-16045-P-A, "Qualification of the Two-Dimensional Transport Code PARAGON," August 2004.
7.10       WCAP-16045-P-A, Addendum 1-A, "Qualification of the NEXUS Nuclear Data Methodology," August 2007.
COLR lulrl2.DOC              04B  0307.1522

PACIFIC GAS AND ELECTRIC COMPANY                                                 NUMBER         COLR 1 DIABLOCANYONPOWERPLANT                                                           REVISION       12 PAGE           8 OF 16 TITLE:       COLR for Diablo Canyon Unit 1                                       UNIT           1 Table 1: FQ Margin Decreases in Excess of 2% Per 31 EFPD Cycle         Max. % Decrease Burnup           in FQ Margin (MWD/MTU) 0                 2.97 150                2.97 354                 3.91 558                 4.34 762                 4.33 967                 4.08 1171                 3.61 1375                 3.02 1579                 2.43 1783                 2.00 7499                 2.00 7704                 2.20 7908                 2.41 8112                 2.60 8316                 2.33 8520                 2.00 NOTE: All cycle burnups outside the range ofthis 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.
COLR lulrl2.DOC             048   0307.1522

PACIFIC GAS AND ELECTRIC COMPANY                                       NUMBER        COLR 1 DIABLOCANYONPOWERPLANT                                                REVISION       12 PAGE           9 OF 16 TITLE:        COLR for Diablo Canyon Unit 1                           UNIT           1 Table 2A: Load Follow W(Z) Factors at 150 and 4000 MWD/MTU as a Function of Core Height HEIGHT       150MWD/MTU                      HEIGHT       4000 MWD/MTU (INCHES)             W(Z)                    (INCHES)             W(Z)
               *0.0             1.5415                      *0.0             1.5598
               *2.4             1.5334                      *2.4             1.5523
               *4.8             1.5255                      *4.8             1.5450
               *7.2             1.5148                      *7.2             1.5352
               *9.6             1.5002                      *9.6             1.5208 12.1             1.4818                      12.1             1.5019 14.5             1.4621                      14.5             1.4812 16.9             1.4406                      16.9             1.4583 19.3             1.4175                      19.3             1.4333 21.7             1.3932                      21.7             1.4067 24.1             1.3674                      24.1             1.3784 26.5             1.3412                      26.5             1.3497 28.9             1.3149                      28.9             1.3212 31.4             1.2877                      31.4             1.2990 33 .8            1.2606                      33.8             1.2832 36.2             1.2364                      36.2             1.2659 38.6             1.2243                      38.6             1.2500 41.0             1.2185                      41.0            1.2374 43.4             1.2111                      43.4            1.2266 45.8             1.2027                      45.8            1.2179 48.2             1.1935                      48.2            1.2077 50.8             1.1837                      50.8            1.1965 53.2             1.1752                      53.2            1.1864 55.6             1.1668                      55.6            1.1773 58.0             1.1579                      58.0            1.1675 60.4             1.1481                      60.4            1.1571 62.8             1.1388                      62.8            1.1464 65.2             1.1348                      65.2            1.1347 67.6             1.1418                      67.6            1.1237 70.0             1.1502                      70.0            1.1288
* Top and Bottom 8% Excluded COLR I ulrl2.DOC            04B    0307.1522

PACIFIC GAS AND ELECTRIC COMPANY                                         NUMBER        COLR 1 DIABLOCANYONPOWERPLANT                                                   REVISION      12 PAGE          10 OF 16 TITLE:        COLR for Diablo Canyon Unit 1                              UNIT          1 Table 2A: Load Follow W(Z) Factors at 150 and 4000 MWD/MTU as a Function of Core Height (continued)
HEIGHT        150MWD/MTU                         HEIGHT      4000 MWD/MTU (INCHES)             W(Z)                        (INCHES)           W(Z) 72.5            1.1595                           72.5           1.1374 74.9            1.1671                           74.9          1.1466 77.3            1.1738                           77.3          1.1556 79.7            1.1796                           79.7          1.1636 82.1            1.1845                           82.1          1.1707 84.5            1.1877                           84.5          1.1761 86.9            1.1898                           86.9          1.1803 89.3            1.1902                           89.3          1.1828 91.8            1.1881                           91.8          1.1824 94.2            1.1845                           94.2          1.1807 96.6            1.1780                           96.6          1.1761 99.0            1.1695                           99.0          1.1696 101.4            1.1630                          101.4          1.1609 103.8            1.1559                          103.8          1.1490 106.2            1.1510                          106.2          1.1472 108.6            1.1500                          108.6          1.1467 111.1            1.1545                          111.1          1.1503 113.5            1.1640                          113.5          1.1665 115.9            1.1690                          115.9          1.1805 118.3            1.1706                          118.3          1.1908 120.7            1.1718                          120.7          1.2007 123.1            1.1687                          123.1          1.2012 125.5            1.1690                          125.5          1.2123 127.9            1.1665                          127.9          1.2042 130.3            1.1775                          130.3          1.2040 132.8            1.1812                          132.8          1.2174
             *135.2            1.1996                         *135.2          1.2235
             *137.6            1.2168                         *137.6          1.2261
             *140.0            1.2271                         *140.0          1.2272
             *142.4            1.2269                         *142.4          1.2275
             *144.8            1.2346                         *144.8          1.2284
* Top and Bottom 8% Excluded COLR lulrl2.DOC            04B    0307.1522

PACIFIC GAS AND ELECTRIC COMPANY                                       NUMBER        COLR 1 DIABLOCANYONPOWERPLANT                                                 REVISION      12 PAGE          11 OF 16 TITLE:       COLR for Diablo Canyon Unit 1                             UNIT          1 Table 2B: Load Follow W(Z) Factors at 8000 and 12000 MWD/MTU as a Function of Core Height HEIGHT        8000 MWD/MTU                    HEIGHT        12000 MWD/MTU (INCHES)              W(Z)                    (INCHES)              W(Z)
             *0.0              1.3804                      *0.0              1.2711
             *2.4              1.3764                      *2.4              1.2698
             *4.8              1.3717                      *4.8              1.2666
             *7.2              1.3664                      *7.2              1.2639
             *9.6              1.3571                      *9.6              1.2578 12.1              1.3441                      12.1              1.2484 14.5              1.3300                      14.5              1.2386 16.9              1.3145                      16.9              1.2281 19.3              1.2977                      19.3              1.2169 21.7              1.2802                      21.7              1.2057 24.1              1.2619                      24.1              1.1945 26.5              1.2433                      26.5              1.1829 28.9              1.2239                      28.9              1.1699 31.4              1.2040                      31.4              1.1587 33.8              1.1846                      33.8              1.1546 36.2              1.1673                      36.2             1.1492 38 .6             1.1600                      38.6             1.1472 41.0              1.1591                      41.0             1.1507 43.4              1.1572                      43.4             1.1559 45 .8             1.1550                      45.8             1.1637 48.2              1.1516                      48.2             1.1697 50.8              1.1474                      50.8             1.1741 53.2              1.1444                      53.2             1.1773 55.6              1.1420                      55.6             1.1794 58.0              1.1393                      58.0             1.1806 60.4              1.1347                      60.4             1.1798 62.8              1.1332                      62.8             1.1804 65.2              1.1398                      65 .2            1.1892 67.6              1.1505                      67.6             1.2085 70.0              1.1646                      70.0             1.2262
* Top and Bottom 8% Excluded COLR lulr12.DOC            04B    0307. l 522

PACIFIC GAS AND ELECTRIC COMPANY                                       NUMBER        COLR 1 DIABLOCANYONPOWERPLANT                                                 REVISION      12 PAGE          12 OF 16 TITLE:        COLR for Diablo Canyon Unit 1                            UNIT          1 Table 2B: Load Follow W(Z) Factors at 8000 and 12000 MWD/MTU as a Function of Core Height (continued)
HEIGHT         8000 MWD/MTU                    HEIGHT       12000 MWD/MTU (INCHES)               W(Z)                    (INCHES)             W(Z) 72.5              1.1791                       72.5            1.2433 74.9              1.1921                       74.9            1.2580 77.3              1.2040                       77.3            1.2710 79.7              1.2145                       79.7            1.2817 82.1              1.2236                       82.1            1.2902 84.5              1.2307                       84.5            1.2963 86.9              1.2370                       86.9            1.3009 89.3              1.2409                       89.3            1.3023 91.8              1.2411                       91.8            1.2989 94.2              1.2394                       94.2            1.2935 96.6              1.2346                       96.6            1.2846 99.0              1.2272                       99.0            1.2727 101.4              1.2172                      101.4            1.2573 103.8              1.2025                      103.8            1.2413 106.2              1.1999                      106.2            1.2434 108.6              1.2258                      108.6            1.2502 111.1              1.2527                      111.1           1.2553 113 .5             1.2758                      113.5           1.2761 115 .9             1.2992                      115.9           1.2988 118.3              1.3195                      118.3           1.3193 120.7              1.3403                      120.7           1.3413 123.1              1.3567                      123.1           1.3568 125.5              1.3795                      125.5           1.3783 127.9              1.3900                      127.9           1.3876 130.3              1.4031                      130.3           1.3989 132.8              1.4125                      132.8           1.4093
            *135 .2             1.4182                     *135.2           1.4093
            *137.6              1.4220                     *137.6           1.4186
            *140.0              1.4222                     *140.0           1.4186
            *142.4              1.4204                     *142.4           1.4183
            *144.8              1.4195                     *144.8           1.4182
* Top and Bottom 8% Excluded COLR lulrl2.DOC             04B    0307.1522

PACIFIC GAS AND ELECTRIC COMPANY                                       NUMBER        COLR 1 DIABLOCANYONPOWERPLANT                                                 REVISION      12 PAGE          13 OF 16 TITLE:         COLR for Diablo Canyon Unit 1                           UNIT          1 Table 2C: Load Follow W(Z) Factors at 16000 and 20000 MWD/MTU as a Function of Core Height HEIGHT         16000 MWD/MTU                   HEIGHT       20000 MWD/MTU (INCHES)                 W(Z)                   (INCHES)             W(Z)
               *0.0              1.3091                     *0.0             1.3386
               *2.4              1.3078                     *2.4             1.3368
               *4.8              1.3030                     *4.8             1.3299
               *7.2              1.2992                     *7.2             1.3242
               *9.6              1.2918                     *9.6             1.3143 12.1              1.2808                     12.1             1.3005 14.5              1.2697                     14.5             1.2869 16.9              1.2581                     16.9             1.2727 19.3              1.2460                     19.3             1.2581 21.7              1.2342                     21.7             1.2438 24.1              1.2227                     24.1             1.2299 26.5              1.2105                     26.5             1.2152 28.9              1.1969                     28 .9            1.1985 31.4              1.1828                     31.4             1.1810 33.8              1.1689                     33 .8            1.1664 36.2              1.1573                     36.2             1.1605 38.6              1.1575                     38.6             1.1648 41.0              1.1644                     41.0             1.1814 43.4              1.1732                     43.4             1.1957 45 .8             1.1852                     45.8             1.2099 48 .2             1.1948                     48.2             1.2216 50.8              1.2024                     50.8             1.2304 53.2              1.2082                     53 .2            1.2370 55.6              1.2125                     55.6             1.2419 58.0              1.2161                     58 .0            1.2454 60.4              1.2166                     60.4             1.2471 62.8              1.2210                     62.8             1.2540 65.2              1.2440                     65 .2            1.2825 67.6              1.2643                     67.6             1.3067 70 .0             1.2795                     70 .0            1.3247
* Top and Bottom 8% Excluded COLR lulrl 2. DOC            048    0307. 1522

PACIFIC GAS AND ELECTRIC COMPANY                                       NUMBER        COLR 1 DIABLO CANYON POWER PLANT                                              REVISION      12 PAGE          14 OF 16 TITLE:        COLR for Diablo Canyon Unit 1                            UNIT          1 Table 2C: Load Follow W(Z) Factors at 16000 and 20000 MWD/MTU as a Function of Core Height (continued)
HEIGHT        16000 MWD/MTU                    HEIGHT       20000 MWD/MTU (INCHES)              W(Z)                     (INCHES)             W(Z) 72.5             1.2936                        72.5            1.3413 74.9             1.3050                        74.9            1.3550 77.3             1.3141                        77.3            1.3662 79.7             1.3203                        79.7            1.3737 82.1             1.3238                        82.1            1.3780 84.5             1.3248                        84.5            1.3793 86.9             1.3237                        86.9            1.3785 89.3             1.3190                        89.3            1.3732 91.8             1.3087                        91.8            1.3612 94.2             1.2966                        94.2            1.3471 96.6             1.2810                        96.6            1.3289 99.0             1.2621                        99.0            1.3069 101.4             1.2388                       101.4            1.2816 103.8             1.2229                       103.8            1.2538 106.2             1.2236                       106.2            1.2330 108.6             1.2239                       108.6            1.2168 111.1             1.2231                       111.1            1.2032 113.5             1.2267                       113.5            1.1989 115.9             1.2273                       115.9            1.1998 118.3             1.2316                       118.3            1.2101 120.7             1.2443                       120.7            1.2245 123.1             1.2549                       123.1            1.2417 125.5             1.2720                       125.5            1.2548 127.9             1.2828                       127.9            1.2665 130.3             1.2944                       130.3            1.2782 132.8             1.3019                       132.8            1.2874
            *135.2             1.3083                      *135.2            1.2972
            *137.6             1.3180                      *137.6            1.3039
            *140.0             1.3215                      *140.0            1.3100
            *142.4             1.3203                      *142.4            1.3148
            *144.8             1.3230                      *144.8            1.3182
* Top and Bottom 8% Excluded COLR lulrl2.DOC            04B    0307.1522

PACIFIC GAS AND ELECTRIC COMPANY                                                                                                                                  NUMBER                               COLRl DIABLOCANYONPOWERPLANT                                                                                                                                            REVISION                             12 PAGE                                 15 OF 16 TITLE:          COLR for Diablo Canyon Unit 1                                                                                                                     UNIT                                 1 225        __ __ __.:l
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PACIFIC GAS AND ELECTRIC COMPANY                                                        NUMBER   COLR 1 DIABLO CANYON POWER PLANT                                                               REVISION 12 PAGE     16 OF 16 TITLE:         COLR for Diablo Canyon Unit 1                                            UNIT      1 .
120 r           I 1(-14,100) 1           (+10,100) 100   ~
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Figure 2: AFD Limits as a Function of Rated Thermal Power COLR lulrl 2.DOC                04B   0307. 1522}}