ML12325A901

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Enclosure 3 to NG-12-0453, Cycle 24 Core Operating Limits Reports
ML12325A901
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Site: Duane Arnold NextEra Energy icon.png
Issue date: 09/30/2012
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NG-12-0453
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Enclosure 3 to NG-12-0453 DUANE ARNOLD ENERGY CENTER CYCLE 24 CORE OPERATING LIMITS REPORT (Non-proprietary Version) 30 pages to follow

Revision 0 September 2012 Duane Arnold Energy Center Cycle 24 Core Operating Limits Report NExTera

ENERGY, Non-Proprietary Information IMPORTANT NOTICE This is a non-proprietary version of the DAEC Cycle 24 COLR, which has the proprietary information removed. Portions of the document that have been removed are indicated by white space inside open and closed bracket as shown here (( I].

An NOL DUANE ARNOLD ENERGY CENTER CYCLE 24 CORE OPERATING LIMITS REPORT Revision 0 September 2012 Prepared by', tkid"V. .'ei.ee' Date: 6. 24 "215/2-JB Nuclear Fuels Verified by: 2 C*A/ItT~ nL- Date: ;9 DAEC Reactor Engineering Concurred by: " ),11? Date:'~

'Mfih*nger,Xicnsing Concurred by" -__

Concurred by:

Mrfa r, Program Ineering

_ Date:

Date:

V+ r,,+

N/

1C2-?

Director, Erg"neenng Reviewed by: _ Date: 271r Approved by.,______________ Date: g lx Plant Manager, Nuclear f Page 1 of 29

1.0 Core Operating Limits Report This Core Operating Limits Report for Cycle 24 has been prepared in accordance with the requirements of Technical Specification 5.6.5 and is applicable to operation for which rated thermal power is 1912 MWt. The core operating limits have been developed using NRC-approved methodology (Reference 1) and are established such that all applicable limits of the plant safety analysis are met.

The Cycle 24 values for the core operating limits are provided in Section 3.0 of this report.

2.0 References

1. General Electric Standard Application for Reactor Fuel (GESTAR II), NEDE-24011-P-A-19, May 2012.
2. Supplemental Reload Licensing Report for Duane Arnold Energy Center, Reload 23 Cycle 24, 0000-0136-4830-SRLR Rev. 0, August 2012.
3. Fuel Bundle Information Report for Duane Arnold Energy Center, Reload 23 Cycle 24, 0000-0136-4830-FBIR Rev. 0, August 2012.
4. Duane Arnold Energy Center Cycle 23 Core Operating Limits Report, Revision 0, September 2010.
5. Duane Arnold Enerqy Center Asset Enhancement Program, Task T0201:

Power/Flow Map, GE-NE-A22-00100-04-01, Revision 0, February 2000.

Page 2 of 29

3.0 Core Operating Limits 1 Averagqe Planar Linear Heat Generation Rate (APLHGR) - TS 3.2.1

a. The Maximum APLHGR (MAPLHGR) as a function of Planar Average Exposure (PAE) shall not exceed the limiting curves defined by Table la for GE14 fuel and Table lb for GNF2 fuel, multiplied by the smaller of the two MAPFAC/LHGRFAC factors determined from Figures 3a and 4 [also use Figures 3a and 4 for Recirculation Pump Trip Out-of-Service (RPTOOS); Figures 3b and 4 for Turbine Bypass Valves Out-of-Service (TBVOOS); Figures 3c and 4 for RPTOOS and TBVOOS].

Figure la plots the MAPLHGR curve corresponding to Table la (GEl4 specific). Figure lb plots the MAPLHGR curve corresponding to Table 1 b (GNF2 specific).

b. The Maximum Linear Heat Generation Rate (MLHGR) as a function of Peak Pellet Exposure (PPE) shall not exceed the curves defined by Table 2a for GEl4 fuel rods and Table 2b for GNF2 fuel rods, multiplied by the smaller of the two MAPFAC/LHGRFAC factors determined from Figures 3a and 4 [also use Figures 3a and 4 for Recirculation Pump Trip Out-of-Service (RPTOOS); Figures 3b and 4 for Turbine Bypass Valves Out-of-Service (TBVOOS); Figures 3c and 4 for RPTOOS and TBVOOS]. Figure 2a plots the MLHGR curve for GEl4 U0 2 fuel rods corresponding to Table 2a. Figure 2b plots the MLHGR curve for GNF2 U0 2 fuel rods corresponding to Table 2b.
c. During Single Loop Operation (SLO), the actual MAPLHGR as a function of planar average exposure shall not exceed the limiting curves defined by Table la for GEl4 fuel and Table lb for GNF2 fuel, multiplied by the smaller of the two MAPFAC/LHGRFAC factors determined from Figures 3a and 5 [also use Figures 3a and 5 for Recirculation Pump Trip Out-of-Service (RPTOOS); Figures 3b and 5 for Turbine Bypass Valves Out-of-Service (TBVOOS); Figures 3c and 5 for RPTOOS and TBVOOS].
d. During Single Loop Operation (SLO), the actual MLHGR as a function of peak pellet exposure shall not exceed the limiting curves defined by Table 2a for all GE14 fuel rods and Table 2b for all GNF2 fuel rods, multiplied by the smaller of the two MAPFAC/LHGRFAC factors determined from Figures 3a and 5 [also use Figures 3a and 5 for Recirculation Pump Trip Out-of-Service (RPTOOS); Figures 3b and 5 for Turbine Bypass Valves Out-of-Service (TBVOOS); Figures 3c and 5 for RPTOOS and TBVOOS].

The above MAPLHGR limits are from the Emergency Core Cooling requirements of the Loss-of-Coolant Accident (LOCA) analyses. The above MLHGR limits are from the fuel thermal-mechanical performance limits. The individual MAPLHGR and MLHGR limits, as discussed in the BASES for TS 3.2.1, are modeled in the process computer. The above can be used to determine the TS MAPLHGR or MLHGR limits in the event the process computer is not available.

Page 3 of 29

2. Minimum Critical Power Ratio (MCPR) - TS 3.2.2
a. The MCPR shall be equal to or greater than the Operating Limit MCPR (OLMCPR), which is a function of Core Thermal Power, Core Flow, and Scram Time (Tau). For Core Thermal Power greater than or equal to 21.7% of rated and less than 40% of rated (21.7% < P < 40%), the OLMCPR is given by Figure 6a [also use Figure 6a for Recirculation Pump Trip Out-of-Service (RPTOOS); Figure 6b for Turbine Bypass Valves Out-of-Service (TBVOOS); Figure 6c for RPTOOS and TBVOOS].

For Core Thermal Power greater than or equal to 40% of rated (P > 40%),

the OLMCPR is the greater of either:

i) The applicable flow-dependent OLMCPR determined from Figure 7, or ii) The appropriate Rated Power OLMCPR from Figure 8 or 9 [Figure 10 for Recirculation Pump Trip Out-of-Service (RPTOOS); Figure 11 for Turbine Bypass Valves Out-of-Service (TBVOOS); Figure 12 for RPTOOS and TBVOOS], multiplied by the applicable power-dependent OLMCPR multiplier determined from Figure 6a [also use Figure 6a for Recirculation Pump Trip Out-of-Service (RPTOOS);

Figure 6b for Turbine Bypass Valves Out-of-Service (TBVOOS);

Figure 6c for RPTOOS and TBVOOS].

b. During SLO with Core Thermal Power greater than or equal to 21.7% of rated, the SLO OLMCPR is the greater of either:

i) adding 0.02 to the OLMCPR determined above, or ii) a rated OLMCPR of 1.43, multiplied by the applicable power-dependent OLMCPR multiplier determined from Figure 6a [also use Figure 6a for Recirculation Pump Trip Out-of-Service (RPTOOS);

Figure 6b for Turbine Bypass Valves Out-of-Service (TBVOOS);

Figure 6c for RPTOOS and TBVOOS].

The above can be used to determine the TS OLMCPR limits in the event the process computer is not available.

Page 4 of 29

4.0 Reload Fuel Bundles CYCLE FUEL TYPE LOADED NUMBER GE14-Pl ODNAB405-14GZ-1 OCT-1 50-T6-3118 22 4 GE14-P1 ODNAB421-8G7.0/7G6.0-1 OCT-1 50-T6-3122 22 28 GE14-Pl ODNAB438-12G6.0-1 COT-1 50-T6-2541 22 32 GE14-Pl ODNAB438-12G6.0-1 COT-1 50-T6-2541 23 32 GE14-P1ODNAB421-14G7.0-100T-150-T6-3301 23 16 GE14-P1 ODNAB410-16GZ-1 0OT-1 50-T6-3303 23 56 GE14-P1ODNAB411-14G8.0-10OT-150-T6-3304 23 32 GE14-P1 ODNAB397-15GZ-1 COT-1 50-T6-3307 23 16 GNF2-P1 ODG2B401-13GZ-100T2-150-T6-4117 24 40 GNF2-PI 0DG2B408-12GZ-1 00T2-150-T6-4118 24 32 GNF2-P1ODG2B412-16GZ-100T2-150-T6-4119 24 48 GNF2-P1 ODG2B424-15GZ-1 OOT2-150-T6-4120 24 16 GNF2-P10DG2B439-13GZ-1 00T2-150-T6-4121 24 16 All fuel types loaded in Cycles 22 and 23 are of the GE14 fuel design type. All fuel types loaded in Cycle 24 are of the GNF2 fuel design type. Note that the bundle GE14-P1ODNAB438-12G6.0-10OT-150-T6-2541 loaded in Cycle 23 is identical to the assembly of the same name that was loaded in Cycle 22.

5.0 Thermal-Hydraulic Stability

a. Continued reactor operation within the "Exclusion Region" on the power/flow map, as defined on Figure 13, is not permitted. (Surveillance Requirement 3.4.1.2)
b. Continued reactor operation within the "Buffer Region" on the power/flow map, as defined in Figure 13, is not permitted when the thermal-hydraulic stability monitor (SOLOMON) is not operational.

Page 5 of 29

TABLE la Maximum Average Planar Linear Heat Generation Rate (MAPLHGR) Limit as a Function of Planar Average Exposure for Cycle 24 GE14 Fuel Types Planar Average MAPLHGR Exposure Limit (GWd/ST) (kW/ft) 0.00 12.82 19.13 12.82 57.61 8.00 63.50 5.00 TABLE lb Maximum Average Planar Linear Heat Generation Rate (MAPLHGR) Limit as a Function of Planar Average Exposure for Cycle 24 GNF2 Fuel Types Planar Average MAPLHGR Exposure Limit (GWd/ST) (kW/ft) 0.00 13.78 17.16 13.78 60.78 6.87 63.50 5.50 Page 6 of 29

TABLE 2a Maximum Linear Heat Generation Rate (MLHGR) Limit as a Function of Peak Pellet Exposure for Cycle 24 GE14 Fuel Types Peak U0 2 Pellet MLHGR Exposure Limit GWD/MT (GWD/ST) kW/ft 0(0) 13.4 16.0 (14.51) 13.4 63.5 (57.61) 8.0 70.0 (63.50) 5.0 2% Gd 20 3 Rods Peak 0% Zone Peak 2% Zone Pellet MLHGR Pellet MLHGR Exposure Limit Exposure Limit GWD/MT (GWD/ST) kW/ft GWD/MT (GWD/ST) kW/ft 0 (0) 12.800 0 (0) 13.093 15.284 (13.865) 12.800 13.722 (12.448) 13.093 60.657 (55.027) 7.642 61.377 (55.680) 7.816 66.866 (60.660) 4.776 67.898 (61.596) 4.885 Page 7 of 29

TABLE 2a (continued) 6% Gd 20 3 Rods Peak 0% Zone Peak 6% Zone Pellet MLHGR Pellet MLHGR Exposure Limit Exposure Limit GWD/MT (GWD/ST) kW/ft GWD/MT (GWD/ST) kW/ft 0(0) 13.100 0(0) 12.255 15.642 (14.190) 13.100 13.532 (12.276) 12.255 62.078 (56.316) 7.821 60.625 (54.998) 7.316 68.433 (62.081) 4.888 67.069 (60.844) 4.572 7% Gd 20 3 Rods Peak 0% Zone Peak 7% Zone Pellet MLHGR Pellet MLHGR Exposure Limit Exposure Limit GWD/MT (GWD/ST) kW/ft GWD/MT (GWD/ST) kW/ft 0 (0) 13.200 0 (0) 12.000 15.761 (14.298) 13.200 13.419 (12.174) 12.000 62.552 (56.746) 7.881 60.174 (54.589) 7.164 68.955 (62.555) 4.925 66.572 (60.393) 4.478 8% Gd 2O 3 Rods Peak 0% Zone Peak 8% Zone Pellet MLHGR Pellet MLHGR Exposure Limit Exposure Limit GWD/MT (GWD/ST) kW/ft GWD/MT (GWD/ST) kW/ft 0(0) 13.200 0(0) 11.755 15.761 (14.298) 13.200 13.315 (12.079) 11.755 62.552 (56.746) 7.881 59.761 (54.214) 7.018 68.955 (62.555) 4.925 66.117 (59.980) 4.386 Page 8 of 29

TABLE 2b Maximum Linear Heat Generation Rate (MLHGR) Limit as a Function of Peak Pellet Exposure for Cycle 24 GNF2 Fuel Types Peak U0 2 Pellet MLHGR Exposure Limit GWD/MT (GWD/ST) kW/ft Peak 2% Gd 20 3 Zone Pellet MLHGR Exposure Limit GWD/MT (GWD/ST) kW/ft Page 9 of 29

TABLE 2b (continued)

Peak 5% Gd 20 3 Zone Pellet MLHGR Exposure Limit GWD/MT (GWD/ST) kW/ft Peak 6% Gd 20 3 Zone Pellet MLHGR Exposure Limit GWD/MT (GWD/ST) kW/ft Peak 8% Gd 2 0 3 Zone Pellet MLHGR Exposure Limit GWD/MT (GWD/ST) kW/ft Page 10 of 29

MAPLHGR vs Planar Average Exposure GE14 Fuel Types 14.0 13.0 12.0 11.0 10.0 9.0 CD.0 ao) 8.0 E (D 7.0 6.0 5.0 4.0 0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 Planar Average Exposure (GWd/ST)

Figure la Page 11 of 29

MAPLHGR vs Planar Average Exposure GNF2 Fuel Types 14.0 13.0 12.0 11.0 cu 10.0 ECD 9.0 8.0

.E(D 7.0 6.0 5.0 4.0 0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 Planar Average Exposure (GWd/ST)

Figure lb Page 12 of 29

MLHGR vs Peak Pellet Exposure GE14 Fuel Types 16.0 14.0 12.0 E 10.0 0

E

('

(D a) 8.0

-r 6.0 4.0 0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 Peak Pellet Exposure (GWd/MT)

Figure 2a Page 13 of 29

MLHGR vs Peak Pellet Exposure

((I Figure 2b Page 14 of 29

Power Dependent MAPLHGR and MLHGR Multipliers (Equipment in Service or RPTOOS) 1.10 1.00 85% < P < 100.0%

0.90 60%:5 P < 85.0%

0. S40o/o<5P <609%

0.80 For P < 21.7% No Thermal Limits Required For 21.7% 5 P < 26% and F

  • 50%

MAPFAC(p) = 0.55 + 0.01395 x (P-26%)

LHGRFAC(p) = 0.55 + 0.01395 x (P-26%)

>50%

a-

  • j21.7% 5 P <26% and F

]For C, = 0.442 + 0.00837 x (P-26%) -

0.70 26% -< < 40%MAPFAC(p) x (P-26%)

A For 26% 5LHGRFAC(p) > + 0.00837

= 0.442 P < 40% and F 50%

LL

! PMAPFAC(p) = 0.708 + 0.005286 x (P-40%)

LHGRFAC(p) =>0.708 + 0.005286 x (P-40%)

n For 26% 5 P < 40% and F 50%

a,.

0.60 MAPFAC(p) = 0.581 + 0.005786 x x(P-40%)

LHGRFAC(p) = 0.581 + 0.005786 (P-40%)

For 40%!5 P <640%anF>50 GMAPFAC(p)

= 0.791 + 0.0052 x (P-60%)

For 40% 5 P < 60%

21.7% <P< 26% LHGRFAC(p) = 0.791 + 0.0052 x (P-60%)

Flow <50% For 60% < P < 85%

0.50 m MAPFAC(p) = 0.922 + 0.00524 x (P-85%)

26% < P < 400 LHGRFAC(p) = 0.922 + 0.00524 x (P-85%)

Flow > 50% For 85% 5 P < 100%

MAPFAC(p) = 1 + 0.0052 x (P-100%)

LHGRFAC(p) = 1 + 0.0052 x (P-100%)

0.40 Where: P = Core Power in % of Rated F = Core Flow in % of Rated 21.7% < P < 26%

Flow > 50%

0.30 0 10 20 30 40 50 60 70 80 90 100 Core Thermal Power (% rated)

Figure 3a Page 15 of 29

Power Dependent MAPLHGR and MLHGR Multipliers (TBVOOS) 1.10 1.00 85% P <100.0%

0.90 F F F 4 + +/- ___________

L 60% 5 P < 85.0%

L.

0.80 For P < 21.7% No Thermal Limits Required U- For 21.7% < P < 26% and F 5 50%

MAPFAC(p) = 0.541 + 0.016047 x (P-26%)

LHGRFAC(p) = 0.541 + 0.016047 x (P-26%)

For 21.7% 5 P < 26% and F > 50%

I- 0.70 - 26% 5 P < 40% MAPFAC(p) = 0.399 + 0.010698 x (P-26%)

Flow < 50% LHGRFAC(p) = 0.399 + 0.010698 x (P-26%)

a.. For 26% 5 P < 40% and F 5 50%

MAPFAC(p) = 0.708 + 0.005286 x (P-40%)

e LHGRFAC(p) = 0.708 + 0.005286 x (P-40%)

U.-.. For 26% 5 P < 40% and F > 50%

0O UA.U MAPFAC(p) = 0.581 + 0.005786 x (P-40%)

LHGRFAC(p) = 0.581 + 0.005786 x (P.40%)

For 40% 5 P < 60%

MAPFAC(p) = 0.791 + 0.0052 x (P-60%)

21.7% 5 P < 26% LHGRFAC(p) = 0.791 + 0.0052 x (P-60%)

Flow 5 50% For 60% 5 P < 85%

0.50 MAPFAC(p) = 0.922 + 0.00524 x (P-85%)

26%!C P < 40% LHGRFAC(p) = 0.922 + 0.00524 x (P-85%)

For 85%!5 P < 100%

f

  • Flow > 50%

MAPFAC(p) = 1 + 0.0052 x (P-100%)

__ _ I _ _ _ _l LHGRFAC(p) = 1 + 0.0052 x (P-100%)

0.40 Where: P = Core Power in % of Rated F = Core Flow in % of Rated

/,21*.7%C

50% <26% 0.30 F F 4 + I 0 10 20 30 40 50 60 70 80 90 100 Core Thermal Power(% rated) Figure 3b Page 16 of 29 Power Dependent MAPLHGR and MLHGR Multipliers (RPTOOS & TBVOOS) 1.10 1.00 85% 5 P < 100.0% 0.90 60% 5 P < 85.0% ~3. 0.80 For P < 21.7% No Thermal Limits Required U- For 21.7% 5 P < 26% and F 5 50% MAPFAC(p) = 0.541 + 0.016047 x (P-26%) CD 26% <P < 40% LHGRFAC(p) = 0.541 + 0.016047 x (P-26%) = Flow <50% For 21.7% 9 P < 26% and F > 50% -J 0.70 MAPFAC(p) = 0.399 + 0.010698 x (P-26%) LHGRFAC(p) = 0.399 + 0.010698 x (P-26%) C Cu For 26% 5 P < 40% and F 5 50% MAPFAC(p) = 0.708 + 0.005286 x (P-40%) LHGRFAC(p) = 0.708 + 0.005286 x (P-40%) C., u For 26% 5 P < 40% and F > 50% 0.60 MAPFAC(p) = 0.581 + 0.005786 x (P-40%) U- LHGRFAC(p) = 0.581 + 0.005786 x (P-40%) 0~ 21.7%:5 P < 26% n For 40% < P < 60% Flow <50% MAPFAC(p) = 0.791 + 0.0052 x (P-60%) LHGRFAC(p) = 0.791 + 0.0052 x (P-60%) For 60% 5 P < 85% 0.50 2 P <w40% MAPFAC(p) = 0.887 + 0.00384 x (P-85%) Flow > 50% S LHGRFAC(p) = 0.887 + 0.00384 x (P-85%) I For 85%<P<100% n MAPFAC(p) = 1 + 0.007533 x (P-1 00%) LHGRFAC(p) = 1 + 0.007533 x (P-1 00%) Where: P = Core Power in % of Rated 0.40 21.7%!5 P < 26% F = Core Flow in % of Rated Flow > 50% 0.30 0 10 20 30 40 50 60 70 80 90 100 Core Thermal Power (%rated) Figure 3c Page 17 of 29 Flow Dependent MAPLHGR and MLHGR Multipliers 1.10 Note: For single loop operation, factors are determined 1.00 using Figure 5 0.90 L) C, LI 0.80 nJ '1- _1 "o 0.70 (3 For F < 80.3% MAPFAC(f) = 0.0067594 X F + 0.45722 0.60 LHGRFAC(f) = 0.0067594 X F + 0.45722 For F ? 80.3% MAPFAC(f) = 1.0 LHGRFAC(f) = 1.0 0.50 where: F = Core Flow in % of Rated 0.40 0 10 20 30 40 50 60 70 80 90 100 110 Core Flow (% rated) Figure 4 Page 18 of 29 Flow Dependent MAPLHGR and MLHGR Multipliers Single Loop Operation 1.10 1.00 F -~ I- -I + - -I + 0.90 (.) 0.80 (, ,-J U-0.70 (.) U-0.60 For F < 38.87% MAPFAC(f) = 0.0067594 X F + 0.45722 LHGRFAC(f) = 0.0067594 X F + 0.45722 For F - 38.87% MAPFAC(f) = 0.72 0.50 LHGRFAC(f) = 0.72 where: F = Core Flow in % of Rated 0.40 0 10 20 30 40 50 60 70 80 90 100 110 Core Flow (% rated) Figure 5 Page 19 of 29 Power Dependent OLMCPR Limits and Multipliers (Equipment in Service or RPTOOS) 3.80 3.60 r __________ I___________ I A- I ___________ 21.7% 5 P < 26% I ___________ I __________________________________________________________ 3.40 Flow> 50% For P < 21.7% No Thermal Limits Required For 21.7% < P < 26% and F5 50% 3.20 OLMCPR(p) = 2.48 + 0.06977 x (26-P) For 21.7% 5 P < 26% and F > 50%

0. ___ ___ I ___ ___ ___ OLMCPR(p) = 3.17 + 0.10465 x (26-P)

For 26% 5 P < 40% and F 5 50% 3.00 OLMCPR(p) = 1.9 + 0.01 x (40-P) For 26% 5 P < 40% and F > 50% .J OLMCPR(p) = 2.11 + 0.017143 x (40-P) 0 2.80 For 40% 5 P < 60% l K(p) = 1.177 + 0.0085 x (60-P) I For 60% 5 P < 85% 21.7%<5 P <26% K(p) = 1.068 + 0.00436 x (85-P) 2.60 Flow < 50% For 85%5 P < 100% K(p) = 1 + 0.004533 x (100-P) 2.40 NJ 26% 5 P <40% Where: OLMCPR(p) = Power Dependent OLMCPR Limit Flow> 50% K(p) = Power Dependent OLMCPR Multiplier -j P = Core Power in % of Rated 2.20 F = Core Flow in % of Rated I I 2.00 26% 5 P < 40% 1 1.80 1 Flow!< 50% I -a 1.60 40%:5 P < 60% 1.40 Note: Y-axis Numbers Represent 60%!5 P < 85.0 1.20 (a) OLMCPR(p) for 21.7%:5 P < 40% F85-/.:5 P < 100.0% (b) K(p) for P ý-.40% 1.00 0 10 20 30 40 50 60 70 80 90 100 Core Thermal Power (% rated) Figure 6a Page 20 of 29 Power Dependent OLMCPR Limits and Multipliers (TBVOOS) 3.80 3.60 _ Li 21.7% < P < 26% II 3.40 Flow> 50% For P < 21.7% No Thermal Limits Required For 21.7% < P < 26% and F S 50% 3.20 -in OLMCPR(p) = 2.53 + 0.074419 x (26-P) For 21.7% 5 P < 26% and F > 50% OLMCPR(p) = 3.19 + 0.1 x (26-P) For 26% < P < 40% and F 5 50% (L 3.00 OLMCPR(p) = 1.9 + 0.01 x (40-P) For 26% 5 P < 40% and F > 50% OLMCPR(p) = 2.11 + 0.017143 x (40-P) 2.80 7\ 0 For 40% 5 P < 60% K(p) = 1.177 + 0.0085 x (60-P) I For 60% 5 P < 85% 21.7% < P <26% K(p) = 1.068 + 0.00436 x (85-P) 2.60 Flows 50% I N For 85% 5 P < 100% K(p) = 1 + 0.004533 x (100-P) 2.40 26% 5 P <40% Where: OLMCPR(p) = Power Dependent OLMCPR Limit Flow > 50% K(p) = Power Dependent OLMCPR Multiplier -I P = Core Power in % of Rated 2.20 F = Core Flow in % of Rated 2.00 1.80 1 26% < P < 40% Flow 5 50% z 1.60 40%!9 P < 60% 1.40 Note: Y-axis Numbers Represent (a) OLMCPR(p) for 21.7% 5 P < 40% 60%:ý P < HE 5 P < 100.0% 1.20 (b) K(p) for P 2:40% 1.00 0 10 20 30 40 50 60 70 80 90 100 Core Thermal Power (% rated) Figure 6b Page 21 of 29 Power Dependent OLMCPR Limits and Multipliers (RPTOOS & TBVOOS) 3.80 3.60 *121.7'%/<5 P < 26% 3.40 For P < 21.7% No Thermal Limits Required For 21.7% < P < 26% and F 5 50% 3.20 OLMCPR(p) = 2.53 + 0.074419 x (26-P) For 21.7% 5 P < 26% and F> 50% OLMCPR(p) = 3.19 + 0.1 x (26-P) I For 26% < P < 40% and F

  • 50%

3.00 I OLMCPR(p) = 1.93 + 0.007857 x (40-P) C. For 26%!5 P < 40% and F > 50% ,J OLMCPR(p) = 2.11 + 0.017143 x (40-P) o 2.80 For 40% 5 P < 60% K(p) = 1.177 + 0.0085 x (60-P) 21.7% P<269% 21.o% For 60% 5 P < 85% <_P___26%_K(p) = 1.068 + 0.00436 x (85-P) 2.60 Flow 5 50% For 85% 5 P < 100% K(p) = 1 + 0.004533 x (100-P) 2.40 26% S P < 40% Where: OLMCPR(p) = Power Dependent OLMCPR Limit Flow> 50% K(p) = Power Dependent OLMCPR Multiplier P = Core Power in % of Rated F = Core Flow in % of Rated 2.20 2.00 1.80 26% 5 P < 40% Flow 50% 5 1.60 40%!5 P < 60% 1.40 1.20 Note: Y-axis Numbers Represent (a) OLMCPR(p) for 21.7% 5 P < 40% (b) K(p) for P ýt40% F 609/. EýE ] 85%!5 P < 100.0% 1.00 0 10 20 30 40 50 60 70 80 90 100 Core Thermal Power (% rated) Figure 6c Page 22 of 29 Flow Dependent OLMCPR Limits 1.60 1.55 For 30% : F < 90.4 % OLMCPR(f) = - 0.00596 X F + 1.7388 For F - 90.4% 1.50 OLMCPR(f) = 1.20 where: F = Core Flow in % of Rated 1.45 1.40 C.) 1.35 0 1.30 1.25 1.20 1.15 1.10 0 10 20 30 40 50 60 70 80 90 100 110 Core Flow (% rated) Figure 7 Page 23 of 29 OLMCPR vs Scram Time (Tau) BOC to EOR - 2108 MWd/ST Cycle Exposure Option B Option A 1.48 1.47 1.46 1.45 a.. -J 0 1.44 1.43 1.42 1.41 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 Tau Figure 8 Page 24 of 29 OLMCPR vs Scram Time (Tau) EOR - 2108 MWd/ST to EOC Cycle Exposure Option B Option A 1.50 1.49 1.48 1.47 C.) -0 o 1.46 1.45 1.44 1.43 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 Tau Figure 9 Page 25 of 29 OLMCPR vs Scram Time (Tau) RPTOOS Option B Option A 1.62 ____ 1.60 1.58 ____ 1.56 a. C-) M 1.54 0 1.52 _ 1.50 1.48 _ 1.46 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 Tau Figure 10 Page 26 of 29 OLMCPR vs Scram Time (Tau) TBVOOS Option B Option A 1.55 1.54 1.53 _ 1.52 _ a-CL, 0 1.51 _ 1.50 1.49 1.48 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 Tau Figure 11 Page 27 of 29 OLMCPR vs Scram Time (Tau) RPTOOS & TBVOOS Option B Option A 1.66 1.64 1.62 1.60 0.) 2 1.58 -J 0 1.56 1.54 1.52 -000 4e--ý 1.50 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 Tau Figure 12 Page 28 of 29 DAEC Power/Flow Map Cycle 24 - 1912 MWth 110 2100 ~ -~~~~~ ~ ~~ I- I I I I~V I I-l I I I I I I I I I I 1 1 7 I lI I I Exclusion Region I Il l I lI 2000 I I I I I I I 100 1900 Buffer Region MELLLA Limit (100.64%) 1800 NOTE: Continued operation above the MELLLA 90 1700 limit or beyond the core flow limit is not allowed. Take action to exit the region immediately. f 1600 80 NOTE: The Natural Circulation Line and 1500 Minimum Pump Speed Line are "best estimates" 96% Load Line as opposed to boundaries in the power flow map. 1400

  • 70 1300 15.8% Load Line 1200

'- 60 0 1100 1 'I. 1000 9 4)50 0 goo I-- C-800 t 2 40 0 0 111 V I Core Flow Limit 30 (51.45 Mlblhr) 600 i A ii ii ii ii ii r[ ii ii 14-i i # I I 111 Minimum I I Pump Speed - - - - t'K1 500 20 400 L LI ..... al. g #*, =* ..... I NaturaliLirculauon Line I S I I III 41 I I I 300 I I I I I I I I I I II I I I I I 10 S II I I I I I I I A Low FW Protection Line 200 I I I I I I I I I [ I 100 0 0 0 10 15 20 25 30 35 40 45 50 55 Core Flow (MIb/hr) Figure 13 Page 29 of 29

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