Text

Attachment 8: LOCA with Offsite Power Available Calculation
	ML18152A936
Person / Time
Site:	Palisades
Issue date:	05/30/2018
From:	; Entergy Nuclear Operations
To:	; Office of Nuclear Reactor Regulation
Shared Package
ML18152A922	List: ML18152A929; ML18152A931; ML18152A932; PNP 2018-010, Attachment 8: LOCA with Offsite Power Available Calculation;
References
	PNP 2018-010
	Download: ML18152A936 (284)
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{{#Wiki_filter:PNP 2018-010 ATTACHMENT 8 LOCA With Offsite Power Available Calculation This attachment consists of the following three documents:

Engineering Changes (ECs) 77045 and 77648 , markups of EA-ELEC-EDSA-03, LOCA With Offsite Power Available, Revision 2.

These two markups are approved changes to EA-ELEC-EDSA-03, LOCA With Offsite Power Available, Revision 2 (see bullet below). These approved changes, when combined with EA-ELEC-EDSA-03, Revision 2, constitute the current version of EA-ELEC-EDSA-03. Calculation EA-ELEC-EDSA-03 will be revised at a later date to reflect the approved changes in ECs 77045 and 77648. Information that has been revised in ECs 77045 and 77648 supersedes the corresponding information in EA-ELEC-EDSA-03, Revision 2.

Excerpt of EA-ELEC-EDSA-03, LOCA With Offsite Power Available, Revision 2.

This excerpt consists of the body of the calculation and appendices containing transient voltage plots. It does not include other appendices, attachments, and computer analysis printouts. Information on pages 20, 21 , 23 , 42 , 91 , and 95 in this excerpt has been superseded as indicated in ECs 77045 and 77648 , markups of EA-ELEC-EDSA-03, LOCA With Offsite Power Available, Revision 2. 283 pages follow

ATTACHMENT 9.2 ENGINEERING CALCULATION COVER PAGE Sheet 1 of 2 DAN0-1 0 AN0-2 OGGNS 0 IP-2 0 IP-3 r8J PLP DJAF D PNPS ORBS DVY 0W3 0 NP-GGNS-3 0 NP-RBS-3 2 CALCULATION !1 > EC# 77045 ! >Page 1 of 11 COVER PAGE (3) Design Basis Cale. ~YES ONO (4) 0 CALCULATION [2] EC Markup 10 1 Revision: 2 Calculation No: EA-ELEC-EDSA-03 lt>J l'I Editorial

Title:

LOCA with Offsite Power Available iisi DYES ~NO (::I) 10 System(s): MAC ! > Review Org (Department): Design Engineerina (11) 12 Safety Class: ! > Component/Equipment/Structure Type/Number:

~ Safety I Quality Related 127-7/XY                             162-154 D Augmented Quality Program D Non-Safety Related                          127-7/YZ                             152-112 127-7/ZX                             P-548 13
 !     > Document Type: Calculation           127-8/XY 14
!     > Keywords (Description/Topical         127-8/YZ Codes):

SLUR, Degraded Voltage 127-8/ZX Time Delay 162-153 REVIEWS 15 (16) 17

    !    > Name/Signature/Date               Name/Signature/Date            !    >  Name/Signature/Date Oluyemi Olaosebikan/ See            Tom Swiecicki/ See IAS/ See               Kirk Cramer/ See IAS/

IAS/ See IAS IAS See IAS Responsible Engineer ~ Design Verifier Supervisor/Approval D Reviewer D Comments Attached D Comments Attached

ATTACHMENT 9.3 CALCULATION REFERENCE SHEET Sheet 1 of 3 CALCULATION CALCULATION NO: EA-ELEC-EDSA-03 REFERENCE SHEET REVISION: 2 I. EC Markups Incorporated (N/A to NP calculations) 1. 2. 3. 4. 5.

11. Relationships: Sht Rev Input Output Impact Tracking Doc Doc Y/N No.

1. EA-EC11464-01 0 0 D N

2. EA-ELEC-VOL T-033 1 0 D N

3. D D

4. D D

5. D D 111. CROSS

REFERENCES:

1. EC 76271 "Timing Information to Support Second Level Undervoltage Relay (SLUR) TS Licensing Submittal"

2. EC 55479 "LOCA with Offsite Power Available" 3.

4. 5. IV. SOFTWARE USED:

Title:

N/A Version/Release: Disk/CD No. V. DISK/CDS INCLUDED:

Title:

Version/Release Disk/CD No. VI. OTHER CHANGES: None

ATIACHMENT 9.4 RECORD OF REVISION Sheet 1 of 1 Revision Record of Revision Change the SLUR reset time for safety related motors on Bus 1C and 1D from 6.5 seconds to 6.0 seconds. EC 77045 Correct editorial error in section 8.5.2.2 from 0.9588 to 0.9558. Replace EC 55479 markup to aliQn with EC 76271.

PALISADES NUCLEAR PLANT - ENGINEERING ANALYSIS CONTINUATION SHEET Cale. No. : EA-ELEC-EDSA-03 Revision 2 Cale.

Title:

LOCA Load Flow With Offsite Power Available Page 20 of 130

6. 2400V motors shall accelerate within FSAR stated limits as noted in Table 3.0-4.

Table 3.0-4 2400V M o tor A cce Iera f10n Requ1remen ts Required Acceleration Motor Time (Sec) FSAR Reference Component Cooling Water Pumps, P52A, B, C 4 Section 9.3.2.2 , Table 9-5 Low Pressure Safety Injection Pumps, P67A, B 4 Section 6.1.2.2(2) , Table 6-2 Containment Spray Pumps, P54A, B, C 4 Section 6.2.2.2, Table 6-6 High Pressure Safety Injection Pumps, P66A, B 4 Section 6.1 .2.2(3) , Table 6-3 Service Water Pumps , P?A, B, C 4 Section 9.1.2 .2, Table 9-2

7. Voltage on the 2400V buses 1C, and 1D must remain or recover above the First Level Undervoltage Relay (FLUR) actuation point. These relays are a model IAV 54E and operate with an inverse time characteristic; that is , the lower the voltage the quicker they respond . If bus voltage drops below 1860V (.7750 pu@ 2400V base) the relays "pick up ," but actuate very slowly, if at all. At a voltage of 0.5425 pu on the 2400V buses, actuation still takes approximately 6.8 seconds . Based on the Relay Setting Sheets, with a time dial setting of 5, the following actuation times are noted relative to the 2400 V bus volts (Vpu at 2400 Vbase):

                                              .7750 Vpu       Relay Pickup
                                              .6708 Vpu       11 .3 seconds
                                              .5425 Vpu        6.8 seconds Note that these voltages are bounded by the required motor terminal voltages assumed SLUR actuation point of 0.9280 pu for 6.5 seco11ds such that if no SLUR actuation occurs then no FLUR actuation occurs.

6.65 Seconds (Reference 17) 4.0 ANALYSIS INPUTS The EDSA Technical 2005, Rev. 2, Power 2000 , Safety Related software pack is utilized in the development and V&V of the Palisade AC Power System EDSA Model. Paladin DesignBase 4.0 Service Pack 1 with;

1. 3-winding transformer loadflow patch

2. Z adjustment factor loadflow patch Microsoft Excel, 2010 is used in the development of input data . These computations are simple mathematics and/or logical references .

PALISADES NUCLEAR PLANT - ENGINEERING ANALYSIS CONTINUATION SHEET Cale. No.: EA-ELEC-EDSA-03 Revision 2 Cale.

Title:

LOCA Load Flow With Offsite Power Available Page 21 of 130 The following documents are relied upon as inputs to this analysis. Changes in these documents could impact the inputs to this calculation and thereby the results . 4.1 CALCULATIONS

1. EA-ELEC-EDSA-001 , Rev . 2 , Auxiliary AC System EDSA Model Development and Verification & Validation

2. Not used .

3. EA-ELEC-VOLT-050 , Rev. 3, MCC Control Circuit Minimum Required Voltage Analysis

4. EA-ELEC-VOL T-051 , Rev 1, MCC Power Circuit Minimum Required Voltage Analysis .

5. Deleted .

6. EA-ELEC-LDTAB-005 , Rev . 9, Emergency Diesel Generator 1-1 and 1-2 Steady State Loading

7. EA-ELEC-VOLT 033, Rev 1, Second Level Undervoltage Setpoint

8. SGT1-1/SGT1-1/LTC , Rev . 2, SGT 1-1 Load Tap Change Automatic Controls

9. SUT1 -2/SUT1-2/ALTC , Rev . 0, Start-up Transformer 1-2 Load Tap Change Automatic Controls

10. EA-GOTHIC-04-08 , Rev . 3, Containment Response to LOCA Using GOTHIC 7.2A

11. EA-GOTHIC-04-09 , Rev. 3, Containment Response to MSLB Using GOTHIC 7.2A

12. EA-ELEC-VOLT-037 , Rev. 3, Palisades Degraded Voltage Calculation for the Safety Related MOVs

13. EA-ELEC-VOL T-040 , Rev . 0, Conversion of Induction Motor Models and Diesel Generator Models from PSSE to EDSA.

14. EA-A-PAL-92-037 Rev 1, Emergency Diesel Generator Loadings - First Two Hours .

15. EA-GL-8910-01 Rev 10, Generic Letter 89-10 MOV Thrust Window Calculations .

EA- EC11464 - 01 Rev . 0 , Second Level Undervoltage Time Delay elays 16 2 - 153 and 162-154 Uncertainty Analysis 4.2 17. Timi ng Information to Support Second Level Undervoltage Relay (SLUR) TS Licensing Subm ittal

1. E-17, Sheet 4 , Logic Diagram Safety Injection Actuation , Revision 17.

2. E-17, Sheet 5, Logic Diagram SIS Test and RAS , Revision 8.

3. E-17, Sheet 6 , Logic Diagram Containment High Pressure , Revision 11.

4. E-17, Sheet 7, Logic Diagram Containment High Radiation , Revision 9.

PALISADES NUCLEAR PLANT - ENGINEERING ANALYSIS CONTINUATION SHEET Cale. No. : EA-ELEC-EDSA-03 Revision 2 Cale.

Title:

LOCA Load Flow With Offsite Power Available Page 23 of 130

2. The EDSA Working Model of calculation EA-ELEC-EDSA-001 accurately reflects system loading of Auxiliary AC Distribution System prior to the event.

3. For this analysis , it is assumed that the second level undervoltage relays will actuate at the high tolerance value of 0.9280 per unit (2400 volt base) for dropout and 0.9328 per unit for pickup , or reset. EA-ELEC-VOL T 033 Rev 1, Second Level Undervoltage Setpoint [Analysis Input 4.1 (7)], determines the second level undervoltage relay setpoints and tolerances. ee attached continuation heet .

4. For Scenarios A 1 and B1 , the 345 KV system vo age 1s assume KV per Analysis Input 4.3.2

5. For Scenarios A2/B2 through A4/B4 , the 345 KV system voltage is assumed to be at 97% of 334 KV or 324 kV. This is below the low end of the range of system voltages cited in Analysis Input 4.3.2 . This value is chosen to bound the maximum expected drop in grid voltage resulting from a plant trip with a pre-trip voltage of 334 KV and a 3% grid voltage drop post unit trip using the Offsite Source Operability Determination Graph of SOP-30 and assuming an operable offsite source pre-trip.

6. The transformer auto-tap changers are assumed to remain as set in Scenarios A 1 and B1 throughout the A2/B2 scenarios . This assumption , in conjunction with Assumptions 6.0 (4) and (5), result in a conservative voltage on the 2400 volt buses for the motor start analyses .

7. A large break LOCA is assumed to place the highest load demand on the system based on EA-A-PAL-92-037 Rev 1, "Emergency Diesel Generator Loadings -

First Two Hours" [Analysis Input 4.0(14)]. It is recognized that when power is provided by a diesel generator the loading is higher due to the single train of systems responding to the LOCA. However, it is assumed that the relative magnitude of electrical system loading remains comparable when supplied by the offsite power system .

8. The temperature inside containment prior to an accident is assumed to be 90°C.

Based on Reference 5.0(2) , the inside containment prior to the OBA is less than 90°C.

9. The maximum analysis temperature for inside containment during the LOCA assumed to be 172°C or 341 .6°F. The assumed peak temperature was based on revision 2 of the MSLB analysis [Analysis Input 4.1(11 )] of 338.476°F. Based on review of Reference Error! Reference source not found. (2) and Analysis input 4.1(10), the MSLB temperature is bounding for the containment temperature in the short term and both temperature profiles decrease to less than the general ambient 90°C analysis temperature within 3 hours. The approximate 3°F margin in the assumed peak temperature is to accommodate variance in the analytical results of the containment response analyses . Note

Continuation of Assumption 6.0 (3) Six (6.0) seconds is used as the acceptance criteria for voltage recovery of all safety related motors on Bu s lC and 10 during a block start of all the motors. Justification for this value is provided below. The time delay associated with the reset of the SLUR relays is composed of two components . The SLUR relays (127-8/XY, 127-8/ YZ, 127-8/ZX for the right channel and 127-7/XY, 127-7/YZ, 127-7/ZX for the left channel) each contain an internal nominal time delay with a nominal setting of 0.65 seconds. The second level undervoltage time delay relay (162-154 for the right channel and 162-153 for the left channel) is set for a nominal delay of 6 seconds . During an undervoltage condition, all three of the SLUR re-lays on a channel must time out to actuate the SLUR time delay relay. If the SLUR relays remain dropped out for the additional duration of the SLUR time delay relay, a load shed on the channel will be initiated . The degraded voltage condition must be less than the combination of the time delay associated with the SLUR relays plus the time delay associated with the SLUR time delay relay to avoid a load shed . The degraded voltage condition is terminated by the reset of one of the SLUR relays . Calculation EA-ELEC-VOLT-033 [Analysi s Input 4.1 (7)) gives the maximum statistical error that the internal timer in the SLUR re-lay can have. This value is 80.9 msec. The nominal setting is 0.65 seconds or 650 msec. The minimum time is, thus, 650 - 80.9 = 569.1 msec. Calculation EA-EC11464-01 [Analysis Input 4.1 (16)) gives the maximum statistical error in the negative direction that the SLUR time delay relay can have and this value is -0 .216 with a nominal setting of 6.0 seconds for the SLUR time delay relay, the relay could actually operate at (6.0-0.216) = 5.784 seconds . Thus, the total minimum delay for the SLUR time delay relay and the SLUR relay will be 6.0 - 0.216 + 0.5691 = 6.3531 seconds. The analytical value must be less than this value. The analytical value is set at 6.0 seconds which is less than 6.3531 seconds. The use of 6.0 seconds as the acceptance criterion in calculation EA-ELEC-EDSA-03 is acceptable . The calculation is used to support the basis generated for proposed Technical Specification change of the total SLUR time delay documented in Tech . Spec. 3.3.5.2. (Reference EC 76271).

PALISADES NUCLEAR PLANT - ENGINEERING ANALYSIS CONTINUATION SHEET Cale. No. : EA-ELEC-EDSA-03 Revision 2 Cale.

Title:

LOCA Load Flow With Offsite Power Available Page 42 of 130 to their calibrated control circuit. A non-Tap adjustment case is evaluated in Scenario B4.1 and resulted in voltage not recovering above the reset. Grid voltage is at its assumed post-trip value of 97% of 334 KV. LOCA load values are used as described in Section 7.3 above. 7.5.4 Special Case Scenario 82.1, ECCS and MOV Motor Start with Delayed P54C Start just Prior to SLUR Reset This Scenario is similar to the B2 Scenario in all respects except that Containment Spray Pumps P54A and P54B are modeled to start just as the second level undervoltage relays are about to reset. Containment Spray pumps P54A and B receive start signals from the SIS logic and CHP logic [Analysis Input 4.2 (7)] , both are required to start the pump. Since the containment high pressure signal may be delayed , it is postulated that the pumps could start just as the second level undervoltage relays (actuated by the transient bus voltage drop during SIS motor starts) are about to reset. To ensure that a second bus voltage transient induced by the start of the containment spray pumps does not prevent SLUR reset within t &.-5 second SLUR time delay, this scenario evaluates that condition . Note that 5 C start logic includes a 15 second time delay upon receipt of the CHP start 1gnal and therefore its start does not threaten the SLUR reset as bus voltage is recovered . To achieve a more conservative evaluation , this analysis is performed with the transformer tap changer still at its pre-event position and grid voltage is 324 KV. This Scenario is analyzed using EDSA's Advanced Transient Stability tool and multiple runs are performed to refine the P54A and B start times so that they occur just prior to SLUR reset This special case scenario is performed only for the "B" alignment case (2400V 1C and1 Don SU1-2) since it was noted during the preparation of this analysis that the B Case bus voltages are limiting . The results of the B2 .1 scenario bound any results of a similar A2 .1 scenario, therefore only the more limiting scenario is evaluated . This special scenario addresses the concerns of Condition Report AR01018366. 7.5.5 Special Case Scenario A4.1 (84. 1), ECCS Motors Running, Bus 1E Energized Concurrent with P54C Start. Since the "C" Containment Spray pump (P54C) includes a 15 second delay on a CHP start signal, its start could occur during the period bounded by Scenario A4/B4. Therefore , this scenario evaluates the dynamic starting of pump P54C during conditions similar to those of scenario B4 with the following exceptions . The SG 1-1 (SU 1-2) transformer's tap has operated after the ECCS motors have started and are at steady state conditions. The voltage has recovered to 2350V. The bounding case of a concurrent start of pump P54C and the re-energizing of Bus 1 E is evaluated using EDSA's Advanced Motor Starting and Advanced Transient Stability tools. Similar to the A4/B4 scenario , all other ECCS motors remain running at their LOCA load values and grid voltage is 97% of 334kV.

PALISADES NUCLEAR PLANT - ENGINEERING ANALYSIS CONTINUATION SHEET Cale. No.: EA-ELEC-EDSA-03 Revision 2 Cale.

Title:

LOCA Load Flow With Offsite Power Available Page 91 of 130 SU 1-2 tap = 1.0 SG 1-1 tap= 1.01875 Bus 1C = 2350V Bus 1D = 2350V Bus 1E = 2353V See Attachment 401 B1for scenario SU-1 D-B1 loadflow results . 8.5.2.2 Scenario SU-1 D-B2, ECCS and MOV Motor Starting, (Transient) Load Shed Complete In this scenario (scenario 4; A2/B2-MS-1 D) power is provided to 2400V Bus 1D by SU 1-2 transformer and Buses 1C and 1Eby SG 1-1 transformer. Both transformer taps are fixed at the resulting tap from Scenario SU-10-81 , which are SU 1-2 tap= 1.0 and SG 1-1 tap= 1.01875. With the turbine trip , grid voltage drops 3% (of 334 KV) to 323.980kV and load shedding has occurred. Motors that receive an SIS and CHP start signal are assumed to start. Bus 1C and 1D bus voltages before, during and after the motor start are as follows . SU-1 D-B2 I Bus Vbase Bus Voltage I Before During After I Bus-1C 2400 0.9655 0.8766 0.9558 I Bus-1 D 2400 0.9475 0.8111 0.9321 I Bus voltages in the above table are compared to normal configuration bus voltage results from Tables B2-1C and 82-1 D. Bus 1D voltage of 0.8111 pu during the motor start is greater than the minimum of 0.7454 pu . Bus 1D voltage of 0.9321 pu after motor start is less than the minimum of 0.9378 pu and does not achieve reset of 0.9328 pu . Bus 1C voltage of 0.8766 pu during the motor start is greater than the minimum of 0.7408 pu. Bus 1C voltage of 0.9588 u after motor start is greater than the minimum of 0.9380 pu. Since the voltage on Bus 1D do ot recover to reset an additional set of cases are run with a slightly higher pre-event voltage Bus 1D. See Attachment 401 82 . 10.9558 1 8.5.3 Split Bus Scenario SU-1 D-2355V~ Bus 1D Isolated on SU 1-2 8.5.3.1 Scenario SU-1 D-2355-81, Adjusted Normal Load Flow (Pre-analysis system conditioning) Split bus scenario SU-10-2355 is the same as scenario SU-1 D but with Bus 1D voltage slightly greater at 2355V. This scenario is configured with Bus 1D on SU 1-2 and Buses 1C and 1Eon SG 1-1 . The pre-analysis condition is set up according to Table 7.5 .2-3-1 D. This scenario is essentially the same as Case B-1 D but with Bus 1D isolated on SU 1-2 and buses 1C and 1E fed via SG 1-1 (scenario 3; A1/B1-10). The primary output of this scenario is the resulting tap setting of the SU 1-2 transformer.

PALISADES NUCLEAR PLANT- ENGINEERING ANALYSIS CONTINUATION SHEET Cale. No.: EA-ELEC-EDSA-03 Revision 2 Cale.

Title:

LOCA Load Flow With Offsite Power Available Page 95 of 130 SU-1D-2355-B2 Branch Current Flow Summary Steady Steady Peak Peak State State From To Branch (PU) (Amps) PU) (Amps) SG1-1 Bus 1C A11-EX02-SUB1-2 0.0873 2100 0.0311 748 SU1-2 Bus 10 A12-X04-SUB1-2 0.1114 2680 0.0396 953 lbase = Sbasel(Vbase X Sqrt 3) = 100 MVA/(2400V X 1.732) = 24,056 .26 A= 1 pu Data from Appendix R A summary of bus voltage results and motor acceleration times for Scenario SU-1 D-2355-B2 is provided in Appendix B-SU-1 D-2355. Transient voltage plots and motor speed/current graphs are provided in Appendix R. A print out of EDSA results is provided in Attachment 402 B2 . 8.5.3.2.1 Results Discussion for 2400V Buses and Motors During the ECCS motor starting voltage transient, limiting factors for 2400V buses 1C and 1D include voltage recovery to 0.9328 volts (pu) within 6.0 seconds to prevent transfer of the buses to Emergency Diesel Generators (EDGs). Review of the 2400V bus voltages indicates that during the ECCS motor starts, Bus 1C voltage dips to 0.8731 pu and recovers to 0.9520 pu . Bus 1C voltage recovers to the SLUR reset voltage of 0.9328 pu in 2.31 seconds. Similarly, Bus 1D voltage dips to 0.8114 pu and recovers to 0.9340 pu . Bus 1D voltage recovers to the SLUR reset voltage in 3.60 seconds. SLUR reset is achieved by using the above values. However, the transient stability has shown a lower voltage result during the post-start steady state condition. By expanding Appendix R results for Bus 1D to four digits beyond the decimal point the voltage is 0.9321 pu. Reset is not achieved using this value. However, completion of the study has shown this scenario is not worst case for pre-event minimum voltage, see scenario SU-CD-1 D which bounds this scenario. The Bus 1C and 1D voltage during motor start and Bus 1C voltage after motor start are greater than the normal configuration results; this case is bounded by the normal configuration. However, the Bus 1D post-start voltage is less than the normal configuration but above the reset. Since the post-start voltage is not bounded by the normal configuration a transient stability case is run to show that the motors will accelerate adequately and voltage will recover to reset within the required &:-&-seconds. See 02 B2. j 6.O I Bus 1C and 1D voltage remains well above the FLU R's actuation curve such that FLUR actuation is not a concern. Voltage recovers to greater than 0.7750 pu well within the time to prevent the actuation of the FLU Rs . All 2400 motors accelerate and achieve 98% of their rated speed within 4 seconds. The longest acceleration time for any of the 2400V motors was 3.0 seconds for the P54A Containment Spray pump. Voltages at the medium voltage (2400V) motor terminals are

PALISADES NUCLEAR PLANT- ENGINEERING ANALYS IS - CONTINUATION SHEET EA-ELEC-EDSA-03 Rev 2 Attachment 401 82 LOCA Load Flow and ECCS Motor Start Analysis Page 8 of17 Paladin DesignBase Motor Starting Program V4 . 35 . 00 Project No . : EA- ELEC-EDSA-03 Page 8 Project Name : Top Ten 2400V Margin Date 09/05/2013 Title Palisades AC System LOCA Model Time 10 : 44 : 01 Dr aw i ng No . : Company Ente r gy - Palisades Revision No . : Engineer GBrock Jobfile Name : 03 LOCA R2(RevCC) Check by Scenario A2/B2 --MS - lD Date Working Model Rev L Base Model , Modified for LOCA loads Special Case 3B System V (PU) V (PU) VDip V (PU) Bus Name Type Volts Before During % After StartMethod All - Ml3 - CN 2400 0 . 9655 0 . 8751 9 . 36 0 . 9554 All - Ml4-CN 2400 0 . 9655 0 . 8766 9 . 21 0.9558 All - Xll - CN 2400 0 . 9654 0.8764 9 . 22 0 . 9557 All - X51 - CN 2400 0 . 9653 0 . 8764 9 . 21 0 . 9556 All-X77-CN 2400 0.9655 0 . 8766 9 . 21 0 . 9558 Al2 - M04 - CN 2400 0 . 9461 0.8095 14.44 0.9307 Al2 - M05 - CN 2400 0 . 9475 0 . 8053 15 . 00 0 . 9308 Al2 - M06 - CN 2400 0 . 9475 0 . 8091 14 . 61 0 . 9316 Al2 - M07 - CN 2400 0 . 9475 0 . 8093 14 . 58 0 . 9316 Al2 - M08 - CN 2400 0.9475 0.8102 14.49 0 . 9319 Al2-M09-CN 2400 0 . 94 72 0.8108 14 . 40 0 . 9318 Al2-Ml0-CN 2400 0 . 9475 0.8092 14.59 0.9317 Al2 - Xl2 - CN 2400 0 . 9473 0.8105 14 . 44 0 . 9318 A23 - M03 - CN 4160 0 . 8878 0 . 8867 0.12 0 . 8878 A24 - M03 - CN 4160 0 . 8892 0 . 8881 0.12 0 . 8892 AB - Elevator 480 0 . 9629 0.8693 9 . 72 0 . 9527 Bll - B07 - CN 480 0.9638 0 . 8703 9.70 0 . 9536 Bll - JL - 275 - CN 480 0.9629 0 . 8692 9.73 0.9527 Bl2 - JL256 - CN 480 0.9400 0 . 6703 28.70 0.9043 Bl3-Bl304A-CN 480 0 . 9402 0 . 8499 9 . 60 0.9303 B90 - Bl3 - CN 480 0 . 9403 0 . 8501 9 . 60 0 . 9305 Bus - lA None 4160 0 . 8918 0 . 8907 0 . 12 0 . 8918 Bus - lB None 4160 0 . 8925 0 . 8914 0 . 12 0 . 8925 Bus - le None 2400 0 . 9655 0 . 8766 9 . 21 0 . 9558 us - lD None 2400 0 . 9475 0 . 8111 14 . 39 0 . 9321 Bus-lF None 4160 0 . 8903 0.8892 0 . 12 0 . 8903 Bus-lG None 4160 0 . 8919 0 . 8908 0 . 12 0 . 8919 Bus - Al4 - (SG) None 2400 0.9669 0 . 8853 8. 4 4 0 . 9581 Cl61 P Load 480 0.9614 0 . 8677 9.75 0.9512 Cl62 P Load 480 0.9364 0 . 6945 25 . 84 0.9089 Cl90A (Xll5A ) Z Load 480 0.9735 0.8501 12.68 0.9585 Cl90B (Xll5B ) Z Load 480 0.9572 0 . 7887 17.60 0.9368 C22 2400 0.9655 0 . 8766 9.21 0.9558 C26 2400 0.9475 0 . 8111 14.39 0.9321 C- 28 (P20A , P20B) P Load 480 0 . 9686 0 . 8373 13 . 55 0.9523 C2A P Load 480 0 . 9611 0. 8 672 9 . 77 0 . 9508 C2B P Load 480 0 . 9364 0 . 6944 25 . 84 0 . 9090 C2C P Load 480 0 . 9598 0.8657 9 . 80 0 . 9495 C300 P Load 480 0.9624 0.8687 9 . 73 0 . 9521 C301 Z Load 480 0.9369 0.6957 25 . 75 0 . 9096 C30A(Xl01) P Load 480 0 . 9619 0.8681 9 . 74 0.9516 C30B(Xl02) Z Load 480 0 . 9363 0 . 6952 25.75 0.9090

ATTACHMENT 9.2 ENGINEERING CALCULATION COVER PAG E Sheet 1 of 2 0 AN0-1 0 AN0-2 0GGNS 0 IP-2 0 IP-3 ~ PLP OJAF D PNPS ORBS OVY 0W3 0 NP-GGNS-3 0 NP-RBS-3 1 l EC# 21 Page 1 of CALCULATION < 77648 < 5 COVER PAGE (3) Design Basis Cale. i:gj YES ONO (4) 0 CALCULATION 1:8:1 EC Markup 15 10

     ' Ca lculation No: EA-ELEC-EDSA-03                                                          ' Revision: 2 (7)                                                                                           10

Title:

LOCA with Offsite Power Available ' Editorial DYES i:gj NO (ll) System(s): MAC i,u, Review Org (Department): Design Eng . (11) 12 Safety Class: < 1 ComponenUEquipmenUStructure Type/Number: 1:8:1 Safety/ Quality Related EA-11 (Bus 1C) D Augmented Quality Program D Non-Safety Related EA-12 (Bus 10) EX-04 13

 <     l Document Type: Calculation 14
<     l Keywords (Description/Topical Codes):

EA-11, EA-12 EX-04 REVIEWS 15 (16) 17 1 1 Name/Signature/Date Name/Signature/Date < 1 Name/Signature/Date Oluyemi Olaosebikan/ See Tom Swiecicki/ See IAS/ See Kirk Cramer/ See IAS/ IAS/ See IAS IAS SeelAS Responsible Engineer 1:8:1 Design Verifier Supervisor/Approval D Reviewer D Comments Attached D Comments Attached

ATTACHM ENT 9.3 CALCULATION REFERENC E SHEET Sheet 1 of 3 CALCULATION CALCULATION NO: EA-ELEC-EDSA-04 RE FE RENCE SHEET REVISION: 2 I. EC Markups Incorporated (N/A to NP calculations) 1. 2. 3. 4. 5.

11. Relationships: Sht Rev Input Output Impact Tracking Doc Doc YIN No.

1. D D

2. D D

3. D D

4. D D

5. D D 111. CROSS

REFERENCES:

1. EC 77045" Markup to EA-ELEC-EDSA-03 and 0098-0189-CALC-001-PLP; SLUR Time Delay (This Engineering Change will Supersede EC 55479)"

2. EC 76271 Timing Information to Support Second Level Undervoltage Relay (SLUR) TS Licensing Submittal.

3. 4. 5. IV. SOFTWARE USED:

Title:

NIA Version/Release: Disk/CD No. V. DISK/CDS INCLUDED:

Title:

Version/Release Disk/CD No. VI. OTHER CHANGES: None

ATTACHMENT 9.4 RECORD OF REVISION Sheet 1 of 1 Revision Record of Revision Provide appropriate justification why SU-CD-1 D is a bounding case for scenarios SU-1 D-2355-B2 . 77648 Correct the reference error in assumption 6.0(9)

PALISADES NUCLEAR PLANT - ENGINEERING ANALYSIS CONTINUATION SHEET Cale. No .: EA-ELEC-EDSA-03 Revis ion 2 Cale.

Title:

LOCA Load Flow With Offsite Power Available Page 23 of 130

2. The EDSA Working Model of calculation EA-ELEC-EDSA-001 accurately reflects system loading of Auxiliary AC Distribution System prior to the event.

3. For this analysis , it is assumed that the second level undervoltage relays will actuate at the high tolerance value of 0.9280 per unit (2400 volt base) for dropout and 0.9328 per unit for pickup , or reset. EA-ELEC-VOL T 033 Rev 1, Second Level Undervoltage Setpoint [Analysis Input 4.1(7)) , determines the second level undervoltage relay setpoints and tolerances.

4. For Scenarios A 1 and B1 , the 345 KV system voltage is assumed to be at 334 KV per Analysis Input 4.3.2

5. For Scenarios A2/B2 through A4/B4 , the 345 KV system voltage is assumed to be at 97% of 334 KV or 324 kV. This is below the low end of the range of system voltages cited in Analysis Input 4.3.2. This value is chosen to bound the maximum expected drop in grid voltage resulting from a plant trip with a pre-trip voltage of 334 KV and a 3% grid voltage drop post unit trip using the Offsite Source Operability Determination Graph of SOP-30 and assuming an operable offsite source pre-trip .

6. The transformer auto-tap changers are assumed to remain as set in Scenarios A 1 and B1 throughout the A2/B2 scenarios . This assumption , in conjunction with Assumptions 6.0 (4) and (5), result in a conservative voltage on the 2400 volt buses for the motor start analyses.

7. A large break LOCA is assumed to place the highest load demand on the system based on EA-A-PAL-92-037 Rev 1, "Emergency Diesel Generator Loadings -

First Two Hours" [Analysis Input 4.0(14)). It is recognized that when power is provided by a diesel generator the loading is higher due to the single train of systems responding to the LOCA. However, it is assumed that the relative magnitude of electrical system loading remains comparable when supplied by the offsite power system.

8. The temperature inside containment prior to an accident is assumed to be 90°C.

Based on Reference 5.0(2) , the inside containment prior to the OBA is less than 90°C.

9. The maximum analysis temperature for inside containment during the LOCA assumed to be 172°C or 341.6°F. The assumed peak temperature was based on revision 2 of the MSLB analysis [Analysis Input 4.1(11 )] of 338.476°F. Based on review of Reference Error! Referet1ee source r1ot fout1d .(2) and Analysis input 4.1 (10), the MSLB temperature is b nding for the containment temperature in the short term and both te perature profiles decrease to less than the general ambient 90°C analysis te perature within 3 hours. The approximate 3°F margin in the assumed pe k temperature is to accommodate variance in the analytical results of the cont inment response analyses. Note 15.0(2) 1

However, completion of the study has shown that this scenario is not worst case . Scenario SU-C0-10 is more restrictive as power is provided to 2400V Buses lC and 10 from SU 1-2, resulting in the start of substantially more safety related LOCA loads on SU 1-2. A higher pre-event voltage is required per the scenario. SOP-30, Station Power, revision 87 Section 4.2 .l.a (3) requires a higher voltage for Bus lC and 10 operability when in the split bus configuration. Cale.

Title:

LOCA Load Flow With Offsite Power Available Page 95 of 130 SU-1D-2355-B2 Branch Current Fie w Summary Steady Steady Peak Peak State State From To Branch (PU) (Amps) PU) (Amps) SG1-1 Bus 1C A11-EX02-SUB1-2 0.0873 2100 0.0311 748 SU1-2 Bus 10 A12-X04-SUB1-2 0.1114 2680 0.0396 953 lbase = Sbasef(Vbase X Sqrt 3) = 100 MVA/(2400V X 1.732) = 4,056 .26 A= 1 pu Data from Appendix R A summary of bus voltage results and motor accelera ion times for Scenario SU-1 D-2355-82 is provided in Appendix B-SU-1 D-2355. Transien voltage plots and motor speed/current graphs are provided in Appendix R. A print out of EDSA results is provided in Attachment 402 82 . 8.5.3.2.1 Results Discussion for 2400V Buses an , Motors During the ECCS motor starting voltage transient , lirhiting factors for 2400V buses 1C and 1D include voltage recovery to 0.9328 volts (pu) witl nin 6.0 seconds to prevent transfer of the buses to Emergency Diesel Generators (EDGs) Review of the 2400V bus voltages indicates that during the ECCS motor starts, Bus 1( voltage dips to 0.8731 pu and recovers to 0.9520 pu . Bus 1C voltage recovers to he SLUR reset voltage of 0.9328 pu in 2.31 seconds. Similarly, Bus 1 D voltage dips to O.i 114 pu and recovers to 0.9340 pu . Bus 1D voltage recovers to the SLUR reset voltage in 3.60 seconds. SLUR reset is achieved by using the above values. However, the transien stability has shown a lower voltage result during the post-start steady state condition. By expanding Appendix R results for Bus 1 D to four digits beyond the decimal point the !Voltage is 0.9321 pu . Reset is not achieved using this value. However , cur rrp letiorr of ti re study I ras sl rovvrr ti ris seer rar io is not worst case for pre eve At miAimum voltage , see sceAario SU CD 1D voihich bounds this scenario. The Bus 1C and 1D voltage during motor start and Bus 1C voltage after motor start are greater than the normal configuration results; this case is bounded by the normal configuration . However, the Bus 1 D post-start voltage is less than the normal configuration but above the reset. Since the post-start voltage is not bounded by the normal configuration a transient stability case is run to show that the motors will accelerate adequately and voltage will recover to reset within the required 6.5 seconds. See Attachment 402 82. Bus 1C and 1 D voltage remains well above the FLU R's actuation curve such that FLUR actuation is not a concern. Voltage recovers to greater than 0.7750 pu well within the time to prevent the actuation of the FLU Rs. All 2400 motors accelerate and achieve 98% of their rated speed within 4 seconds. The longest acceleration time for any of the 2400V motors was 3.0 seconds for the P54A Containment Spray pump. Voltages at the medium voltage (2400V) motor terminals are

ATTACHMENT 9.2 ENGINEERING CALCULATION COVER PAGE Sheet 1 of 2 0 AN0-1 OAN0-2 0GGNS 0 IP-2 OIP-3 (81 PLP OJAF OPNPS ORBS ovv 0W3 0 NP-GGNS-3 0 NP-RBS-3 1 2 CALCULATION <> EC# 42422 < lPage 1 of 2424 COVER PAGE (3) Design Basis Cale. ~YES ONO (4) ~ CALCULATION DEC Markup (=> > Calculation No: EA-ELEC-EDSA-03 '"' Revision: 2 (f J 01

Title:

LOCA with Offsite Power Available t Editorial DYES ~NO

\llJ                                                *u, Review Org (Department):

System(s): SPS, EPS t Design Engineering 11 12

< >      Safety Class:                            <   l Component/Equipment/Structure Type/Number:
~ Safety / Quality Related D Augmented Quality Program D Non-Safety Related 13
 < > Document Type:       Cale 14

( >Keywords (Description/Topical Codes): LOCA Offslte Power REVIEWS 15 15 1 > Nam.i'J?~ure/Date 1 > Name/Signature/Date 117> Name/Signature/Date Gr.,., Brock/ / to/,/; jf,, Dave Kennedy/~ , ' ,o,M..f Ken Yeager{2:~ /D/.c~31/ lJ

               /                                                                                      7 Responsible Engineer              ~ Design Verifier                      Supervisor/Approval D   Reviewer IXI Comments Attached                D    Comments Attached EN-DC-126 REV 4

CALCULATION CA LCULATION NO: EA-ELEC-EDSA -03 REFERENCE SHEET REVISION : 2 I. EC Markups Incorporated (N/A to NP calculations)

1. 22675 , ORN 1O-P2180 ; Hydrogen Recombiner removal

2. 23175, ORN 1O-P3081 ; MCC 2 Vmin change

3. 19665, ORN 1O-P860 ; B02-M77/1 cable length change 4 . 34344, ORN 12-P4390; Cool ing Tower E-30A replacement

5. 42506 , ORN 13-P4066; 52-327 replacement

6. 42618 , ORN 13P-4161 ; 52-173 replacement , P-74 data change

7. 20250, ORN 10-00420 ; thermal overload heater 7.5% tolerance added

8. 13204, ORN 10-00490; SLUR setpoint change

9. 19665, ORN 10-00698 ; duplicate of ON 1O-P860

10. See next few pages for all DRNs conside red in th is revision .

II. Relationships : Sht Rev Input Output Impact Tracking Doc Doc YIN No.

1. EA-ELEC-EDSA-01 2 !Kl D N

2. EA-ELEC-VOL T-050 3 !Kl D N

3. EA-ELEC-VOL T-051 1 !Kl D N

4. EA-ELEC-LDTAB-005 9 !Kl D N

5. EA-ELEC-VOL T-033 1 !Kl D N

6. SGT1-1/SGT1-1/LTC 2 !Kl D N

7. SUT1-2/SUT1-2/AL TC 0 !Kl D N

8. EA-GOTHIC-04-08 3 !Kl D N

9. EA-GOTHIC-04-09 3 !Kl D N

10. EA-ELEC-VOL T-037 3 !Kl D N 11 . EA-ELEC-VOL T-040 0 !Kl D N

12. EA-A-PAL-92-037 1 !Kl D N

13. EA-GL-89-10-01 10 !Kl D N 111. CROSS REFERENCES :

1. CR-PLP-2009-04995 2.

IV. SOFTWARE USED:

1. EDSA Technical 2005 Rev 2

2. Paladin DesignBase 4 .0 Service Pack 1, 3-winding transformer patch , Z adjustment factor patch V. DISK/CDS INCLUDED :

Title : N/A Vers ion/Release Disk/CD No . VI. OTHER CHANGES : Supersedes Revision 1.

Calculation Reference Sheet - Continuation

ORN Engineering Description Resolution (Model Changes)

Change EA-ELEC-EDSA-03 1 10- 22675 Remove Hydrogen Recombiner M69A from breaker In model , Loads of Hydrogen Recombiners off breakers 52-205 P2180 52-205 and Hydrogen Recombiner M69B from 52-176 and 52-176 removed from drawing and nodes attached to existing cable. Node names are Spare-M69A and Spare-M69B and suppressed from system reporting. App C modified, Done 6/10 2 10- 23175 MCC 2 V min changed from 0.8845 to 0.8956 Used find and replace to change limiting MCC 2 voltage from P3081 0.8845 to 0.8956 pu in the EA document. Done 6/7 3 10- 19665 Change cable length of cable B02-M77/1 from 249' to Cable length of B02-M77/1 changed to 279' in model. Done 6/7 . P860 279' App C note updated , P-24 is still available w/offsite power available. Done 6/10 4 12- 27518 Replace MCC Breaker Buckets on MCC 1,2,7,8 Breaker Bucket changes have not been made. Model changes P3990 not made at this time. DRN Pending 5 12- 34344 Remove the loads of Cooling Tower E-30A motors In model, loads of EMB-7505 and EMB-7506 removed from the P4390 EMB-7505 and EMB-7506 . Remove the load of Lube Load Schedule LC-75-ML and labeled spares. Load of breaker Oil Pump P-203A (LC-73, 52-7308) 52-7308 removed from drawing a node added labeled Spare 52-7308 and suppressed from system reporting. Done 6/7. App C modified to spare bkr. 6 13- 42506 Breaker 52-327 replaced with Cutler Hammer Changed the breaker type to 480V-HMCP070M2C which is P4066 HMCP070M2C rated at 70A and the short circuit rating was changed to 65 KA. Done 6/7. 7 13- 42618 Overload heater in Breaker 52-173 changed from In model , resistance on breaker 52-173 changed to 0.58673. P4161 H1021 to H1022 and motor nameplate data acquired. Motor P-74 efficiency changed to 78% and Motor P-74 power Resistance in breaker 52-173 changes to 0.5233. factor changed to 71 % for all scenarios. Motor P-74 efficiency is changed from 77% to 78% and the power factor is changed from 69% to 71 %. 8 13- 42505 For Breaker 52-317 replaced obsolete breaker and Breaker has not been replaced . Model changes not made at P4204 starter (V-1 B) this time. DRN Pending .

Calculation Reference Sheet - Continuation

DRN Engineering Description Resolution (Model Changes)

Change 9 ORN- 20250 Affects EA-ELEC-VOLT-051 . Includes 7.5% tolerance MCC 1 MOV required voltage changed from 0.8488 to 0.8492 10- on thermal overload heater. Min imum required voltage and MCC 2 MOV required vo ltage changed from 0.8296 to 00420 in EA-ELEC-EDSA-03 is changed . 0.8300 on Tab les 3.0-2 , A2, A3 , A4, A4 .1, B2 , B3, B4, B4.1. 10 ORN- 13204 Changes setpoint on undecvoltage relays 127-7 and Changed SLUR reset value from 0.9336 pu to 0.9328 pu. In calc 10- 127-8 from 0.9336 to 0.9328 pu. write-up . Done 6/10 00490 11 ORN - 19665 Same as 1O-P860 See response to 1O-P860. 10-00698 EA-ELEC-EDSA-05 1 08- 5000122470 General Calculation Markup per Fast Transfer Opening time of Bus A 14 Bkr is at a time that is .5 cycles P1499 Modification greater than currently shown Appendix H, Appendix I and Figure 7-1 . The event manager in the fast transfer model was chanrd to reflect the new times. Fast transfer calculation Appendice and Figure were changed . No effect on EA-ELEC-EDSA-03 calculation . 2 12- 27518 Same as 12-P3990 See response to 12-P3990. P6398 3 13- 42506 Same as 13-P4066 See response to 13-P4066. P4068 4 13- 42505 Same as 13-P4204 See response to 13-P4204. P4206 EA-ELEC-EDSA-06 1 11- 28753 Tra nsformer EX-71 was rep laced and Impedance Incorporated SP-71 xfmr impedance= 5.92 and X/R = 5.4238 01060 changed. and 1.07340 = Rand 5.82187 = X into model. EA-ELEC-VOLT-050 1 10- 19665 Same as 10-P860 See response to 1O-P860 . P759 2 11- 30334 Remove results for MCC's 3, 4, 7, 8. No impact to EA-ELEC-EDSA-03. P2254 3 12- 27518 Same as 12-P3990 See response to 12-P3990. P3987

Calculation Reference Sheet - Continuation

DRN Engineering Description Resolution (Model Changes)

Change EA-ELEC-VOLT-051 1 09- 16016 52-417 bkr/starter-V48 See response to 09-P2416 . P2417 2 10- 20250 Same as 10-00420 See response to 10-00420. P475 3 10- 19665 Same as 1O-P860 See response to 1O-P860 . P922 4 10- 22675 Same as 10-P2180 See response to 10-P2180 P2182 5 11- 29393 Replace 52-213 (V79) starter with CH A200 and TOH In model , changed 52-213 bkr resistance to 0.01 331 . P2034 w/ FH51 , R=0.00473 (0 .00473+0.007) *(234 .5+60/234.5+25). 6 11 - 31361 Justify starter contact resistance No impact to EA-ELEC-EDSA-03 . P2726 7 11- 30334 Same as 11-P2254 See response to 11-P2254. P2255 8 12- 27518 Same as 12-P3990 See response to 12-P3990 . P3988 9 13- 42618 Same as 13-P4161 See response to 13-P4161 . P4020 EA-ELEC-LDT AB-005 1 10- 22675 Same as 1O-P2180 See response to 10-P2180 P2181 2 10- 22927 Change out of P8A motor. No change to calc , using No change to EA-ELEC-EDSA-03. P251 1 most conservative KW values . 3 10- 15130 New-Removes 16.9kW Security Vital Eq . load from 52- In model , removed security load from 52-206 , added node P458 206 and spare bkr. labeled Spare-Security Vital Eq , suppressed from system reporting . Removed load from App E, modified App C. 4 10- 19665 Same as 1O-P860 See response to 1O-P860. P760 5 11- 31664 Red lined superseded portions of attachments . No impact to EA-ELEC-EDSA-03. P2820 6 ORN- 13448 P7B existing model is adequate for replacement pump. No impact to EA-ELEC-EDSA-03. 09-01578

Calcu lation Reference Sheet - Continuation

DRN Engineering Description Resolution (Model Changes)

Change EA-ELEC-EDSA-01 1 08- 10758 EC 10758 cancelled No impact to EA-ELEC-EDSA-03 . P1441 2 08- 7446 C-508 , 42-853 rep lace motor & starter Change C50B lfl=2.7A, eff=86 .5%, pf=80% for loadfl ow and P683 short circu it tabs ; all scenarios 3 09- 16016 Rep lace MCC bucket 42-417, V-48 In model, chang ed 52-41 7 R=0.00653 = (0.00335+0.0024) P2416 *(234 .5+60)(234.5+25). Changed bkr library to HMCP070M2 4 09- 1601 7 Rep lace MCC bucket 42-427, P-7 9A In model , part of panel schedule MCC-4-ML. No change to P2423 model since there is no change to HP, eff or pf. 5 09- 8490 Replace seal oil skid Change P-23 (52-299) 50 Hp motor to 15 Hp motor, 17FLA, P292 1071LR, 0.9pf, 0.9eff. Change MCC-5-ML (52-51 7) to 15 HP , 0.9pf, 0.9eff. Change MCC-5-ML (52-523) to spare . 6 09- 16608 abandon VC-901, 52-9553 In model, changed panel schedule for 52-9553 to Spare and 0 P3447 HP . 7 10- 22675 Same as 1O-P2180 See response to 10-P2180 P2179 8 10- 24917 Replace bkr 52-426 from FA3100 to FD3100 52-426 is part of panel schedu le MCC-4-SL and does not this P3305 detail. No change to calc. 9 10- 24499 52-461 , Remove V-13C , V-130 , spare bkr 52-461 is part of panel schedule MCC-4-ML, bkr has been P3809 renamed as (461 )-Spare and zero load . 10 10- 19665 Same as 1O-P860 See response to 1O-P860 . P923 11 11- 28753 Same as 11-01060 See response to 11 -01060. P1873 12 11- 29393 Same as 11-P2034 See response to 11 -P2034 P2033 13 11 - 30344 Pending-phone room upgrade P2280

Calculation Reference Sheet - Continuation

DRN Engineering Description Resolution (Model Changes)

Change 14 11- 27395 Replace bkr 52-015 for V21 I 52-015 motor is part of panel schedule MCC-10-ML and does P479 not have this detail. No change to calc. 15 12- 27518 Pending-replace mcc 1, 2, 7, 8 buckets Pending-no change to calc. P3989 16 12- 34344 Same as 12P-3490 See response to 12-P4390 P4389 17 12- 35981 Multiple changes . Welding plugs not modeled , 52-853 & C-508; same as 08-P683 . P4662 No changes to calc . 18 12- 36525 Replace bkr 52-1610 with FX063M125 Load is part of panel schedule and does not have this detail. No P4834 change to calc. 19 12- 35265 52-023 , V21 , turb bldg exh fan , replace bkr & starter Load is part of panel schedu le and does not have this detail. No P5006 change to calc . 20 12- 38424 pending-add xfmr to edb/update dwgs per CRPLP- Eq . ID change only, changed EX-94 to EX-1019; part of panel P5487 2012-02369-CA 1 schedule MCC-95-SL. 21 12- 40637 52-8221-replace bkr 52-8221 is part of panel schedule and does not have this detail. P6099 No change to calc . 22 13- 42289 pending-52-7959, replace bkr & starter for P-96 Pending-no change to calc. P4016 23 13- 42618 Same as 13-P4161 See response to 13-P4161 . P4046 24 13- 42506 Same as 13-P4066 See response to 13-P4066. P4055 25 13- 42505 Same as 13-P4204 See response to 13-P4204. P4203 26 ORN- 19665 Same as 1O-P860 See response to 1O-P860. 10-00697 27 ORN- New-modify App J unique bkr and family listing to ac No impact to EA-ELEC-EDSA-03. 11- short ckt calc eda-06 00115 28 ORN- 27395 Same as 11-P4 79 See response to 11-P479. 11-01028

Calculation Reference Sheet - Continuation

DRN Engi neering Description Resolution (Model Changes)

Change 29 ORN- 19665 Same as 1O-P860 See response to 1O-P860 . 11-01033 30 ORN- 38424 Same as 12-P5487 See response to 12-P5487 . 12-02682

I Revision I Record of Revision In itial issue . 0 See section O of calculation . 1 See section O of calculation. 2

PALISADES NUCLEAR PLANT - ENGINEERING ANALYSIS CONTINUATION SHEET Cale. No.: EA-ELEC-EDSA-03 Revision 2 Cale.

Title:

LOCA Load Flow With Offsite Power Available Page 10 of 130 Table of Contents 0.0 Revision History .................................................................................................................................. 12 0.1 REVISION O-Draft .......................... .. .... ....... .......... ... .... ... ... ... .. .... ....... ..... ....... ....... .... ... .. .... ... ... ... ... ... . 12 0.2 REVISION 1 ....... ..... ... ........... .. ....... ... .. ...... .. ... ... ... ......... ... .... ..... ........ ........ ............... .. ..... .... .... ... ... ..... 12 0.3 REVISION 2 .. ....... ..... .. ... .. ... ..... ... .. .. .. ..... ...... ........ ... ........ .... ..... .. .. ..... .. ... ..... ....... ... ..... ... ... .. ........ .. ...... 12 1.0 Introduction ............................................................................. ...................................... ...................... 13 1.1 Purpose .. ....... .. ... ....... .. ... .... .. ............ .. ... .. .... ... ... ... ... ... .. ........ .. ... .......... .. .... ..... .................. ... .. ... .. ... ..... 13 1.2 Objective .. ..... ............ ..... .... ..... ...... ... .. ... .. .. ... .. ......... .. .... .. ......... .... ..... .. ... ... ..... ........ .. .. .... ....... .. .. .. ... ... . 13 1.3 Limitations ... .. .... ... .. .... .... .. .... ..... ........ .. ............... ..... .. .. ..... ... .. .. .. .......... ... ...... ... ... ..... ....... ... ..... .. ... ... .... 13 1.4 Open Items ...... ... .... ..... ..... .... ... .. ..... ... .. .. ..... ...... ... ... .. ... ..... ... .. ..... ................. .. .............. .... ... .. .. ..... ...... 14 1.5 Known conservatisms .... .... .... ....... .. ... ... .. ... ..... .. .. .. ... ...... .... ......... ..... ... .. ... ....... ... ... ...... .... .. ... ....... ....... 14 2.0 Methodology .......................................... .............................................................................................. 15 3.0 Acceptance Criteria ............................................................................................................................ 16 4.0 Analysis lnputs ......................................................................... .... ....................................................... 20 4.1 Calculations .. .... ... ... ......... .. .. .... ... .. .............. ... ... .. ...... ....... ...... ..... ..... .......... .. ............ .. ..... ..... .... ....... ...21 4.2 Drawings .. ................... ... .... .. .. ...... ...... .... ..... .................... ....... .. ............. ...... ......... ....... ... ... ..... .. ... ....... 21 4.3 Other ..... ... .... .. ... .... ......... .. ... .. .. ....... ......... .. ... ...... ......... .. ... .. .... .... ..... ....... ... ...... ........ ... ...... .... .. ..... ... .... 22 5.0 References ............................................................................................................................................ 22 6.0 Assumptions .......................................................................................................................................22 7.0 Analysis ............................................................................................................................................... 25 7 .1 Scenario/ Cases ..... ..... ...... ................................ .. ..... .. .... ......... ..... .... ..... ........ .......... ....... ............. ...... 25 7.1.1 Normal Configuration Scenarios/Cases .. ... ....... ........ ..... .. .... ... .. ..... .... ....... .. ....... .... .. ..... ... ... ... ... .. .26 Split Bus ... ...... ... .. ........ .. ................. ....... ..... ... .. ..... ... ... ..... .. ........ .. ... .. ....... ...... ........ ................ .... ... 28 7.1 .2 Scenarios/Cases ........... ...... ........ .. ... ..... ... ...... ... ..... ..... ... .......... ..... .. .... ...... .... ... ... .... .. .... ... .. .. ... ... ..28 7.2 Offsite Power System Voltages/Bus 1E Loading ....... ..... ..... .. ....... .. ...... .. ... ... ... ..... .... .. ... .. ... .. .. .... ... .... 30 7.2.1 Sensitivity Cases On Minimum 2400v System Voltage .... ... .. .. ... ........ ... ..... ... .. .. .. ........ ...... .. .. ...... 31 7.3 Development of Accident Load Demand Factors ..... .. .... ..... ... .. .. ....... ... ... .... .. .. ..... ..... ... ...... .... ... ........ 32 7.4 Modeling Simplifications and Adjustments ..... .... ..... ... ... .... .. ............ .. ....... .... .... .. ..... .... .. ... ...... ... ...... .. 33 7.5 Scenario Details ....... ...... ................ ........... .. ...................... ....... .. ....... ....... .... ............ ........ ....... .. .. .. ..... 33 7.5.1 Scenario A1/B1 , Adjusted Normal Load Flow (Pre-analysis System Conditioning) .. .... .. ...... .. ... ..34 7.5 .2 Scenario A2/B2 , ECCS Motor and MOV Start, Load Shed Complete .. .. .... .. ..... ........ ... ...... .... .... .34 7.5.3 Scenario A4/B4 , ECCS Motors Running with Bus 1E Re-Energized ........ .... .. ......... .. .. ... .. ....... ....41 7.5.4 Special Case Scenario B2.1 , ECCS and MOV Motor Start with Delayed P54C Start just Prior to SLUR Reset .. .... .. ..... ..... ... ... ... ....... .. ....... .......... ..... .. ............. ...... ....... ...... ... .. .. ... ...... ...... ...... .. .... ....42 7.5.5 Special Case Scenario A4 .1 (B4 .1). ECCS Motors Running , Bus 1E Energized Concurrent with P54C Start ..... ....... ... ... ....... ... .. ... .... ..... ......................... .. ..... .. .. ....... .. ..... .. ............... .. ... .... ...... ... ..... 42 7.6 Implementation of Scenarios in the EDSA Model Software .. ...... .... .. ...... ..... ... .... .. .. .... ........ .. .... .. ..... .43

PALISADES NUCLEAR PLANT - ENGINEERING ANALYSIS CONTINUATION SHEET Cale. No.: EA-ELEC-EDSA-03 Revision 2 Cale.

Title:

LOCA Load Flow With Offsite Power Available Page 11 of 130 7.6.1 Scenario Set Up ............ ... .............. .. ........ .......... ... ....... ................ ... ....... ...... ............... ... .......... .. ..43 7.6.2 Transformer LTC Setting Determination .... .. ... ..... ....... .. ..... ..... ..... ..... .................... ... ........ .. ..... .. .. .43 7.6.3 Bus Loading and Connections .................. ... .. ..... .................. .. .................................. ................ ...44 7.6.4 Performance of Analyses Using EDSA ........... .... ......... ...... ... ........................ ....... .... ....... .... ... .. ... .44 8.0 Results and Conclusions ...................................................................................................................45 8.1 Case A-1 D, Steady State LOCA with 2400 V Buses 1C and 10 on SG1-1 .... .... ... .. ..... ... ... ... .......... .46 8.1.1 Scenario A 1-10, Adjusted Normal Load Flow (Pre-analysis system conditioning) ... .... ..... ..... .... .46 8.1.2 Scenario A2-10 , ECCS and MOV Motor Starting , (Transient) Load Shed Complete ............... ..46 8.1.3 Scenario A4-1 D, ECCS Motors Running with Bus 1E Re-Energized ................... .... ....... .. .... ...... 50 8.1.4 ScenarioA4.1-10 , ECCS Motors Running , Bus 1E Energized , LTC On , CS Start .. .. .... ... ........ ..53 8.2 Case 8 -1 D, Steady State LOCA with 2400 V Buses 1C and 10 on SU1-2 .................... ..... ........... .. 55 8.2.1 Scenario 81-1 D, Adjusted Normal Load Flow (Pre-analysis system conditioning) .... .... .. ....... .. ... 55 8.2.2 Scenario 82-10, ECCS and MOV Motor Starting , (Transient) Load Shed Complete ... .. ... .. .. ..... 56 8.2.3 Scenario 84-1 D, ECCS Motors Running with Bus 1E Re-Energized ....... .... .. ... .... .... .... .... .. .. .. .. .. 59 8.2.4 Scenario 84.1-10, ECCS Motors Running , Bus 1E Energized, LTC On , CS Start ... ... ... ..... ... ... .61 8.2.5 Scenario 82.1-10, ECCS Motor Start, Delayed P54A/B Start Concurrent w/ SLUR Reset.. ...... 65 8.3 Case A-1C , Steady State LOCA with 2400 V Buses 1C and 10 on SG1-1 .. ........ ......... .. .... ..... ...... ..66 8.3.1 Scenario A1-1C , Adjusted Normal Load Flow (Pre-analysis system conditioning) ... .. .... .... ......... 66 8.3.2 Scenario A2-1C , ECCS and MOV Motor Starting , (Transient) Load Shed Complete ... ... ... ... ... ..66 8.3.3 Scenario A4-1 C, ECCS Motors Running with Bus 1E Re-Energized ........................... ........ ... ... .70 8.3.4 ScenarioA4.1-1C, ECCS Motors Running , Bus 1E Energized, LTC Off ................ ...... ............... 72 8.4 Case B-1C , Steady State LOCA with 2400 V Buses 1C and 10 on SU1-2 .... ... .. .. ............ ........ ....... 76 8.4.1 Scenario B 1-1 C, Adjusted Normal Load Flow (Pre-analysis system conditioning) .. .... ..... ....... ... .76 8.4.2 Scenario 82-1 C, ECCS and MOV Motor Starting , (Transient) Load Shed Complete .... .. ........... 76 8.4.3 Scenario 84-1 C, ECCS Motors Running with Bus 1E Re-Energized ................ .. .... ... ..... ...... ...... 80 8.4.4 Scenario 84.1 -1C, ECCS Motors Running , Bus 1E Energized, LTC Off ... .............. ........... ..... ... .82 8.4.5 Scenario 82 .1-1 C, ECCS Motor Start, Delayed P54A/B Start Concurrent w/ SLUR Reset ........ 85 8.5 Special Sensitivity/ Split Bus Case Studies ... ........... .................... ... .. .. ..... ... ..... .... .. .. ...... ..... .. ........ ... 87 8.5.1 Split Bus Scenario SU-1C; Bus 1C Isolated on SU 1-2 .... .. .... ..... .............. .... ... .. .. ....... .... ... .. ... .... 89 8.5.2 Split Bus Scenario SU-1 D; Bus 10 Isolated on SU 1-2 .... ........ .. ...... .... .. .. .. .... ... .. .. ..... .. .. .. ... ..... ... 90 8.5.3 Split Bus Scenario SU-10-2355V; Bus 10 Isolated on SU 1-2 .. ....................... ........... .. .. ........ .. ..91 8.5.4 Split Bus Scenario SU-CD-1C ; Buses 1C & 10 Isolated on SU 1-2; Max 1C .. ................... ...... ... 96 8.5.5 Split Bus Scenario SU-CD-10; Buses 1C & 10 Isolated on SU 1-2; Max 10 ........ .... ......... ....... 108

1. Conclusions & Constraints ..............................................................................................................121 9.0 Appendices and Attachments ......................................................................................................... 121 9 .1 Append ices .......... ... .... .... .... .. ...... ... ............. .. ... .... ............. ... .. ... ... ........ ... ........ ..... .. .... ..... .. ........ ..... .. 122 9.2 General Information Attachments ......... ........ ..... ...... ..... ......... ... .. .. ... ...... .. ..................... ...... ..... .... ... . 123

PALISADES NUCLEAR PLANT - ENGINEERING ANALYSIS CONTINUATION SHEET Cale. No.: EA-ELEC-EDSA-03 Revision 2 Cale.

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LOCA Load Flow With Offsite Power Ava ilable Page 12 of 130 9.3 Computer Analys is Printouts ...... .. ... ....... ...... ..... ..... ... .. .. .. ... .. .. .......... ......... .. ........ ..... ...... ....... .... ...... 124 0.0 REVISION HISTORY This section provides a summary of changes performed in each revision of this Engineering Analysis including a basis for each change . 0.1 REVISION 0-DRAFT The results presented herein represent a first cut analysis for use in initial review and integration/coordination with other EDSA analysis. These results are not valid for use in evaluating voltage requirements. This calculation is not issued final for use . 0.2 REVISION 1 The following changes/enhances were made to the LOCA analysis:

1. The analysis was re-performed using the updated working model.

2. The split transformer/bus alignment open issues were resolved.

3. The use of non-final inputs was eliminated.

4. Pre-event loading was revised to provide a more bounding analysis.

5. The maximum post unit trip grid voltage drop of 3% was incorporated into the analysis .

0.3 REVISION 2 The following changes/enhancements were made to the LOCA analysis:

1. Acceptance criteria updated in response to DRNs for calculations EA-ELEC-VOLT-050 and EA-ELEC-VOL T-051.

2. The analysis was re-performed to determine the minimum operability limit on the 2400V buses , targeting 2350V. (CR-PLP-2009-04995) .

3. A sensitivity study was performed (expanded) to determine 2400V bus loading and how loading impacts the results. This sensitivity study includes the effects of changing the 345 kV system voltage and also the resulting tap changer position .

Results are documented in 500 series attachments .

4. Scenarios A2/A3 (B2/B3) were combined with the 480V charging pumps, boric acid pumps and MOVs starting times staggered based on recovery voltage .

PALISADES NUCLEAR PLANT - ENGINEERING ANALYSIS CONTINUATION SHEET Cale. No. : EA-ELEC-EDSA-03 Revision 2 Cale.

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LOCA Load Flow With Offsite Power Available Page 13 of 130

1.0 INTRODUCTION

This analysis is prepared for Palisades Nuclear Plant. The purpose and objective of the analysis are provided below. A revision summary of the calculation is included in this section for reference by the user. The revision summary includes only the major items in general terms. For complete details, refer to the text of the document which includes revision annotation . This calculation addresses the concerns of Condition Report AR01018366 , Postulated SIS Followed by CHP Event. The calculation addresses the concerns of Condition Report CR-PLP-2009-04995 regarding minimum 2400V bus voltage (1 C & 1 D) in SOP 30 . 1.1 PURPOSE This calculation performs a load flow and dynamic motor starting analysis of the Palisades Auxiliary AC Distribution system during LOCA conditions with offsite power available . This analysis uses the system model documented in EA-ELEC-EDSA-001 to evaluate the load flow analysis. The results of this analysis are used to evaluate the adequacy of the physical distribution system to meet design and licensing basis requirements. 1.2 OBJECTIVE The objective of this calculation is to create an accurate and bounding load flow and dynamic motor starting analysis of the Palisades Auxiliary AC Distribution system during LOCA conditions with offsite power available and using EDSA software . The analysis should evaluate all realistic and potential system alignments for the given plant condition . The results of this analysis should show that all related design and licensing bases requirements are met and that the Palisades AC system has sufficient capacity and capabilities to support all loads required to mitigate a plant LOCA with offsite power available . The analysis determines the minimum 2400V bus voltage on buses1 C & 1 D. 1.3 LIMITATIONS The following limitations are included in this analysis.

1. During the development of the dynamic motor starting analyses, EDSA could not converge to a solution when attempting to model dynamic starts of the individual MOVs . Consequently, The MOVs powered by Motor Control Centers (MCCs) 1 and 2 that receive SIS start signals are modeled as one composite motor load per MCC. Rather than modeling the concurrent start of sixteen MOV motors , a composite motor load was added to both MCC 1 and 2 to simulate all of that MCC's MOV motors lumped into one . That motor is started in lieu of the individual MOVs . Appendix E contains the data used to develop the composite load for MCCs 1 and 2.

PALISADES NUCLEAR PLANT - ENGINEERING ANALYSIS CONTINUATION SHEET Cale. No.: EA-ELEC-EDSA-03 Revision 2 Cale.

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LOCA Load Flow With Offsite Power Available Page 14 of 130 During the later stages of development of the LOCA Load flow EDSA model it was noted that the composite MOV motors developed for MCC-1 and MCC-2 MOVs attained only about 70% of rated speed and steady state current was about 230% of rated. It is concluded that this EDSA model is limited in its ability to evaluate MOV motor operation . Consequently, until refinements in the MOV motor models are made to resolve this limitation , MOV motor operation is evaluated based on the available voltage at the MCC bus as compared to the minimum required MCC voltage for starting and operation of MOVs developed in EA-ELEC-VOL T-051 , Rev. 1 [Analysis Input 4.1 (4))

2. During the development of the dynamic motor starting analyses , EDSA could not converge to a solution without the following adjustment to the model. For the dynamic motor starting scenarios , A2/B2 the power supply cables from MCC-1 and MCC-2 to their associated boric acid pump motor (P56B and P56A, respectively) are modeled as two cables per phase whereas , realistically there is only one . Motor operation is evaluated based on the available voltage at the MCC bus as compared to the minimum required MCC voltage for starting and operation of MOVs developed in EA-ELEC-VOL T-051 [Analysis Input 4.1(4))

3. The Automatic Tap Adjustment function used in the EDSA model of the Safeguards 1-1 and Startup 1-2 transformer adjusts the transformer tap to achieve the desired voltage on the Controlled Bus. However, the resulting tap does not always correspond to an actual tap setting . Therefore, the tap is manually set to an actual tap setting that results in a voltage at the Controlled Bus at or below the minimum value of the "as-left" allowable range.

4. The Controlled Bus for the SG1-1 Transformer is set to 2400V Bus 1E.

Consequently, the SG1-1 transformer automatic tap changer will not function properly if the transformer is not aligned to supply the 1E bus. To eliminate this analysis difficulty, Bus A14 (Safeguards Bus) is used as a surrogate . 1.4 OPEN ITEMS None 1.5 KNOWN CONSERVATISMS The following conservatisms are included in this analysis .

1. The input for the ECCS and associated non-ECCS Safety-Related motor loads are based on EA-ELEC-LDTAB-005 which computes the load for single train accident mitigation . With both trains operating from offsite power, loads may be lower.

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LOCA Load Flow With Offsite Power Available Page 15 of 130

2. No credit is given for operation of the automatic load tap changer (AL TC) on the SG1-1 and SU1-2 transformers for any of the dynamic motor starting scenarios .

Not until the long term loading scenarios (A4/B4) , where it is assumed adequate time has elapsed such that the tap changers would have operated , are they allowed to adjust automatically. This is considered conservative since the SG1 -1 and SU 1-2 transformer tap settings are adjusted during the normal load flow scenarios A 1 and B1 where loading is low (relative to the LOCA scenarios) and grid voltage is highest. The AL TCs adjust to a lower tap setting to maintain the desired voltage on the controlled bus. Then , the LTCs are "frozen " at that setting and remain there for the subsequent motor start scenarios where grid voltage is much lower and load on the controlled bus is higher.

3. For analysis purposes , the Safeguards 1-1 and Startup 1-2 transformer tap is set to an actual tap setting that results in a voltage at the Controlled Bus at or below the minimum value of the "as-left" allowable range for the transformer. To increase voltage margin , the tap is set to a pre-event voltage of 2350V. Where-as the nominal operating voltage is approximately 2400V or higher.

2.0 METHODOLOGY This analysis is built upon the Palisades AC Power System EDSA Model documented in calculation EA-ELEC-EDSA-001 . That model contains normal loading and demand/diversity factors for normally running loads and is used as a basis for the LOCA analyses . The LOCA analyses are based on four loading scenarios analyzed for two different offsite power configurations yielding a total of eight (8) scenarios or cases. The eight cases are comprised of two similar sets of four scenarios but with different power sources to the 2400V buses 1C, 10 and 1E; Safeguards (SG) Transformer 1-1 and Start Up (SU) Transformer 1-2. The cases or scenarios are based on the normal load flow case with changes in loading (additions and deletions of loads or adjustments in load values) based on the plant's response to the accident (LOCA) as initiated by a Safety Injection Signal (SIS) , Recirculation Actuation Signal (RAS) , and Containment High Pressure (CHP) signal with offsite power available. The E-17 Logic diagrams are used to develop the loading cases . The load changes are based on start and trip signals that occur automatically and actions that are likely to be taken by the operators. The load demands on electrical motors are based on mechanical system input power requirements , which are in turn based on the system operating requirements. The mechanical loads are translated into electrical load and are then used to set model loading. Cases / scenarios are constructed by opening and closing breakers within the model to replicate the electrical distribution system configuration and motors are turned on and off during the condition under evaluation. Cable temperatures are adjusted to replicate or bound expected post-accident conditions . The switchyard is treated as an infinite source swing bus and the voltage set to the expected minimum.

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LOCA Load Flow With Offsite Power Available Page 16 of 130 The cases / scenarios include a pre-accident analysis to establish the tap position on the load tap changing (LTC) equipped transformers. This case is a mod ified normal load flow (NLF) Working Model case and is used to precondition the model. The scenarios are "run " with the various offsite sources using the EDSA software. The Advanced Power Flow analysis is used for determination of steady state conditions and the Advanced Motor Starting (Multi-Motor Starting Snapshot Option) is used for motor starting analysis. These power flow routines are used as the reporting bases for the available voltages on the individual buses and motors. Finally, the Advanced Transient Stability is used to obtain time plots for the analysis cases and is the basis of the time v. speed , current and voltage plots. It is noted that correlation of the resultant voltages is not perfect between the power flow and transient analysis due to the software computational algorithms. The EDSA output is compared to Acceptance Criteria and its adequacy verified or deviations justified to arrive at a Conclusion . ACCEPTANCE CRITERIA

1. Steady state voltages for safety related Motor Control Centers (MCCs) shall remain above the minimum MCC required voltage for those loads required to operate to support LOCA mitigation .

Minimum required MCC Power Circuit bus voltages for loads on MCCs 1, 2, and 21 through 26 are specified in calculation EA-ELEC-VOLT-051 , Rev. 1 [Analysis Input 4.1(4)] . The limiting minimum MCC bus voltages for safety related MCCs 1, 2, and 21 through 26 are provided in Table 3.0-1 below.

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LOCA Load Flow With Offsite Power Available Page 17 of 130 Table 3.0-1 Limiting Voltage at MCCS 1, 2, and 21 through 26 for Load Operation Minimum Volts Requ ired

MCC Circuit Load Description

                                                                                            @MCC Per Unit (480V Base) (1)
                                                                                                               ~

1 52-183 V78 Penetration & Fan Rooms Supply Fan 0.8754 2 52-287 P56A Boric Acid Pump 0.8733 21 52-2111 V15A Battery Rooms 1 & 2 Exhaust Fan 0.8670 22 52-2229 M0-3049 SI Tank T82C Outlet Valve 0.6741 23 52-2329 M0-3045 SI Tank T82B Outlet Valve 0.6769 24 52-2411 V15B Battery Rooms 1 & 2 Exhaust Fan 0.8353 25 52-2523 VHX-26A Air Filter Unit VF-26A Heater 0.8703 26 52-2623 VHX-26B Air Filter Unit VF-26B Heater 0.8694 (1) From EA-ELEC-VOLT-051; voltag es are maximum of re qu ired for running loads and running MOVs.

2. Motor Control Center (MCC) voltages shall recover to greater than the highest MCC minimum required voltage for the starting of GL89-10 MOVs during the time that they are required to start and above the minimum required voltage for running while they are operating . Note , however, that the minimum required running voltages for GL89-10 MOVs are bounded by the limiting voltages identified in Table 3.0-1 above .

Minimum required voltage at MCCs 1 and 2 to ensure GL89-10 MOV motors will start and accelerate is determined from calculation EA-ELEC-VOL T-051 , Rev. 1 [Analysis Input 4.1(4)) and are identified in Table 3.0-2 below .

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LOCA Load Flow With Offsite Power Available Page 18 of 130 Table 3.0-2 MOV Starting Voltage Requirements for MCCs 1, 2, 21, 22, 23, 24, 25, and 26 Minimum Volts Requi red

                                                                                         @MCC MCC        Circuit       Load       Load Description                              Per Unit (480V Base) (1l 1        52-141      M0-3008      M0-3008 Low Pressure Injection Valve                   0.8492 2        52-25 1     M0-3014      M0-3014 Low Pressure Injection Valve                   0.8300 21       52-2129      M0-0341      M0-3041 SI Tank T82A Outlet Valve                      0.7217 22       52-2229      M0-3049      M0-3049 SI Tank T82C Outlet Valve                      0.6994 23       52-2329      M0-3045      M0-3045 SI Tank T82B Outlet Valve                      0.7230 24       52-2429      M0-3052      M0-3052 SI Tank T82D Outlet Valve                      0.7076 25       52-2525     M0-1042A      Pressurizer Block Valve                                0.7143 26       52-2625     M0-1043A      Pressurizer Block Valve                                0.7213 (1)   Fro m EA-ELEC-VOLT-051; voltages are maximum of required for MOV starting .

3. MCC steady state voltages shall remain above the maximum MCC min imum required voltage for control circuit pickup when the load is requ ired to operate.

Minimum required contactor pickup voltages are more limiting than contactor hold-in voltages and therefore bound the latter. Voltages on MCCs 1, 2, 21 -26 dip below the limiting MCC voltage for contactor pickup , load operation , and MOV start. Review of calculation EA-ELEC-VOL T-050 , Rev. 3 [Analysis Input 4.1 (3)] and relevant DRNs reveals that those MCC contactors will not have adequate voltage to pick up during the large motor starting . However, Appendix K MCC voltage plots indicates MCC bus voltage recovers to 0.90 pu (480V base, 0.9391 460V base) in approximately 3.5 seconds. During this time , contactors attempting to pick-up may be experiencing pull-in current. Starter control fuses are sized to carry the pull-in currents for at least 6.5 seconds without clearing . Actuation signals remain active within this period . Although voltage on MCCs 1, 2, 21-26 drops below the calculated minimum required MCC voltage for contactor pickup, the case that the contactors do pickup is considered. The 480V motors which auto-start (boric acid pumps and MOVS on MCC 1 and MCC2) are modeled with a constant impedance load during the period that MCC voltage is below contactor pickup voltage requirement. The constant impedance load is de-energized and the motor is started at the time when the MCC voltage reaches contactor pickup. Based on review of MOV motor performance curves , typical MOV motors can sustain lock rotor conditions for more than 6 seconds without exceeding thermal limits. Circuit breakers for the motor loads are sized for 2xLRA and overload heaters are generally sized to allow greater than 10

PALISADES NUCLEAR PLANT- ENGINEERING ANALYSIS CONTINUATION SHEET Cale. No.: EA-ELEC-EDSA-03 Revision 2 Cale.

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LOCA Load Flow With Offsite Power Available Page 19 of 130 seconds for starting . Therefore, it is concluded that if the contactors should pick-up, the loads on MCC-1 and MCC-2 would either start immediately or experience a short delay in starting during which time, no adverse effects related to the motor loads would occur. The minimum required control circuit pickup voltages for the starters associated with MCCs 1, 2, and 21 through 26 are specified in calculation EA-ELEC-VOL T-050. The maximum, or limiting , minimum pickup voltages for the aforementioned MCCs are provided in Table 3.0-3 below. Note that some MCC loads have been analyzed in EA-ELEC-VOL T-050 as not required and therefore , are not included in the required voltage summary; refer to EA-ELEC-VOLT-050 for additional details of development of the required minimum control circuit voltages . Table 3.0-3 Required MCC Voltage for Control Circuit Pick-Up & Drop-Out Minimum Required Pick-Up Min imum Required Drop-out MCC Voltage (pu on 480V Basis) (1) Voltage (pu on 480V Basis) (1) 1 0.8771 0.6322 2 0.8956 0.6436 21 0.8232 0.6133 22 0.8138 0.6098 23 0.8234 0.6134 24 0.8725 0.6670 25 0.8869 0.5795 26 0.8992 0.5809 (1) From EA-ELEC-VOLT-050; minimum required voltages.

4. Steady state voltages on the 2400 V buses shall recover to a value above the second level undervoltage relay (SLUR) reset setpoint within the allowed recovery time (SLUR delay) . See Assumption 6.0 (3) for SLUR setpoint values.

5. Transient voltages on the 2400 V buses shall not drop below the second level relay setpoint for longer than the minimum allowed time delay minus tolerances. Voltage shall recover to a steady state value above the second level relay reset, or pickup, value . See Assumption 6.0 (3) for SLUR setpoint values.

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LOCA Load Flow With Offsite Power Available Page 20 of 130

6. 2400V motors shall accelerate within FSAR stated limits as noted in Table 3.0-4.

Table 3.0-4 2400V M o t or A cce Ierat1on R equ1remen ts Required Acceleration Motor Time (Sec) FSAR Reference Component Cooling Water Pumps , P52A, B, C 4 Section 9.3 .2.2, Table 9-5 Low Pressure Safety Injection Pumps , P67A, B 4 Section 6.1.2.2(2), Table 6-2 Containment Spray Pumps, P54A, B, C 4 Section 6.2.2.2, Table 6-6 High Pressure Safety Injection Pumps , P66A, B 4 Section 6.1.2.2(3) , Table 6-3 Service Water Pumps, P?A, B, C 4 Section 9.1.2.2, Table 9-2

7. Voltag Level U Information on this page the First odel IAV 54E an quicker has been superseded as e voltage the 400V base) the rela the 240 indicated in the enclosed 425 pu on sed on the Relay n times are noted r Engineering Change 77045, markup of EA-ELEC-EDSA-03, Note t inal voltages assum actuati LOCA with Offsite Power at if no SLUR Available.

4.0 ANALYSIS INPUTS The EDSA Technical 2005, Rev. 2, Power 2000, Safety Related software pack is utilized in the development and V&V of the Palisade AC Power System EDSA Model. Paladin DesignBase 4.0 Service Pack 1 with ;

1. 3-winding transformer loadflow patch

2. Z adjustment factor loadflow patch Microsoft Excel , 2010 is used in the development of input data . These computations are simple mathematics and/or logical references .

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LOCA Load Flow With Offsite Power Available Page21 of130 The following documents are relied upon as inputs to this analysis. Changes in these documents could impact the inputs to this calculation and thereby the results . 4.1 CALCULATIONS

1. EA-ELEC-EDSA-001 , Rev. 2, Auxiliary AC System EDSA Model Development and Verification & Validation

2. Not used .

3. EA-ELEC-VOLT-050 , Rev . 3, MCC Control Circuit Minimum Required Voltage Analysis

4. EA-ELEC-VOL T-051 , Rev 1, MCC Power Circuit Minimum Required Voltage

5. Information on this page

6. and 1-2 Steady has been superseded as

7. nt

8. indicated in the enclosed atic Controls 9.

Engineering Change ap Change 10. 77045, markup of ing GOTHIC 11 . EA-ELEC-EDSA-03, ing GOTHIC

12. LOCA with Offsite Power lation for the

13. Available. els and Diesel

14. EA-A-PAL-92-037 Rev 1, Emergency Diesel Generator Loadings - First Two Hours.

15. EA-GL-8910-01 Rev 10, Generic Letter 89-10 MOV Thrust Window Calculations.

4.2 DRAWINGS

1. E-17, Sheet 4 , Logic Diagram Safety Injection Actuation , Revision 17.

2. E-17, Sheet 5, Logic Diagram SIS Test and RAS , Revision 8.

3. E-17, Sheet 6, Logic Diagram Containment High Pressure, Revision 11 .

4. E-17 , Sheet 7, Logic Diagram Containment High Radiation , Revision 9.

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LOCA Load Flow With Offsite Power Available Page 22 of 130

5. E-17, Sheet 10, Logic Diagram 2400 Volt Load Shed , Revision 10.

6. E-251 , Sheet 3, Schematic Diagram Containment Spray Pump-P54C , Rev. 2.

7. E-251 , Sheet 1, Schematic Diagram Containment Spray Pump-P54A, Rev 17

8. E-280 , Sheet 1, Schematic Diagram Diesel Gen ., Boiler Rooms and Aux . Bldg . H

            & V, Rev 11 4.3   OTHER

1. System Operating Procedure SOP-30 , Revision 69 , Station Power

2. Nuclear Plant Operating Agreement for Palisades Nuclear Generating Plant (NPOA) , dated 3/17/2010. Specifically Attachment A, Nuclear Plant Interface Requirements (NP IRS) for the Palisades Nuclear Generating Plant, effective date :

03/31/2010 , NPIR #1 through NPIR #3 . NPIR #3 states the grid voltage range from 334 kV to 369 kV with a maximum 3% system voltage drop from the Palisades generator trip.

5.0 REFERENCES

The following references were consulted in the development of this engineering analysis. These references are in addition to the design inputs above .

1. Users Manuals.

a. EDSA Technical 2005 , Rev. 2, Users Manuals.

b. Paladin DesignBase 4 .0 User Manuals.

2. FSAR Chapter 14, Figure 14.18.2.2, MSLB Containment Response Environmental Profile, Revision 31 .

3. FSAR Chapter 9, Section 9.8 Heating , Ventilation and Air-Conditioning Systems.

4. NEMA MG 1, Section 12.44, Variations From Rated Voltage and Rated Frequency.

6.0 ASSUMPTIONS The following assumptions were used in the development of this calculation . In addition , all assumptions previously used to develop the Palisades AC Power System EDSA model [Analysis Input 4.1 (1 )] are applicable and incorporated by reference and used for the development of this analysis unless specifically noted to the contrary. All assumptions are considered minor and justified as acceptable without further verification.

1. The plant is assumed to have been operating at minimum loading bus loading at power or in a hot standby condition configuration prior to the event. No maintenance activities are in progress that require unique system lineups and the offsite power systems are operable.

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LOCA Load Flow With Offsite Power Available Page 23 of 130

2. The EDSA Working Model of calculation EA-ELEC-EDSA-001 accurately reflects system loading of Auxiliary AC Distribution System prior to the event.

3. For this analysis, it is assumed that the second level undervoltage relays will actuate at the high tolerance value of 0.9280 per unit (2400 volt base) for dropout and 0.9328 per unit for pickup, or reset. EA-ELEC-VOLT 033 Rev 1, Second Level Undervoltage Setpoint [Analysis Input 4.1 (7)], determines the second level undervoltage relay setpoints and tolerances.

4. For Scenarios A 1 and B 1, the 345 KV system voltage is assumed to be at 334 KV p

5. Fors Information on this page sumed to e of system e~1t~t has been superseded as the maxi volta Sour indicated in the enclosed offsit Engineering Change

6. cenarios 77648, markup of unction with 400 volt EA-ELEC-EDSA-03,

7. Alarg base LOCA with Offsite Power thesystem dings -

First provi AVa I*,ab/e. ower is train of systems re pon mg o e owever, 1 1s assume a e relative magnitude of electrical system loading remains comparable when supplied by the offsite power system.

8. The temperature inside containment prior to an accident is assumed to be 90°C .

Based on Reference 5.0(2), the inside containment prior to the OBA is less than 90°C.

9. The maximum analysis temperature for inside containment during the LOCA assumed to be 172°C or 341 .6°F. The assumed peak temperature was based on revision 2 of the MSLB analysis [Analysis Input 4.1 (11 )] of 338.476°F. Based on review of Reference Error! Reference source not found. (2) and Analysis input 4.1 (10), the MSLB temperature is bounding for the containment temperature in the short term and both temperature profiles decrease to less than the general ambient 90°C analysis temperature within 3 hours. The approximate 3°F margin in the assumed peak temperature is to accommodate variance in the analytical results of the containment response analyses. Note

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LOCA Load Flow With Offsite Power Available Page 24 of 130 that a lower inside containment temperature may be used if justified based on when the equipment (e.g., valve) is required to operate. Any component specific assumptions are noted in the analysis. Analysis Inputs 4.1(10) and 4.1 (11) have been updated to revision 3. The new inside containment peak temperature response is 363 .1°F. This temperature is an input to calculating cable resistance . The 341.6°F temperature input for cable resistance is assumed to remain bounding due to the in-containment cable temperature profile lagging behind the containment temperature profile. The containment temperature profile from Figure 62 of Analysis Input 4.1(11) shows the temperature is above 341 .6°F for less than one minute and drops approximately 65°F below 341.6°F within about 30 seconds of the peak. Due to the short duration of temperature above 341.6°F and the sharp temperature drop below 341.6°F, cable temperature is not expected to increase above the previously assumed peak temperature of 341 .6°F. Also , Analysis Input 4.1(11) is conservative in that the containment pressure is modeled at a constant design pressure of 55 psig resulting in a higher temperature profile due to the lower constant containment spray flow . Figure 61 of Analysis Input 4.1 (11) shows the containment pressure profile peaks at 52.4 psig and never reaches the 55 psig containment design pressure . Analyzing these two figures in the 0-100 second time frame shows the containment pressure to be below 55 psig. A lower actual containment pressure results in a higher containment spray flow which results in a lower temperature profile.

10. It is assumed that motors with at least 90 percent of rated voltage present at their terminals are will start and accelerate to rated speed in accordance with the manufacturers published curves . Based on Reference 5.0(4), NEMA Standard MG-1 , Section 12.44, Variations from Rated Voltage and Rated Frequency, motors shall operate successfully under running conditions at rated load at a voltage equal to 90 percent of rated voltage at rated frequency.

11 . It is assumed that the operation of 4160V motors on Buses 1A, 1B, 1F and 1G do not significantly impact the primary side voltage of the SU 1-2 transformer and is ignored. The portion of SU1-2 supply conductor that also carries SU1-1 and SU1-3 supply current is relatively short and it is not realistic that the 4160V motor load would impact Grid voltage.

12. For purposes of assessing motor start, it is assumed that if a speed of 0.98 pu is obtained , the motor has achieved rated speed and is running. Review of PLP MV motor data indicates a normal slip range of 0.33% to 2.78% at rated voltage.

13. Safety related motors with 70% of rated voltage or greater available at their terminals are assumed to start and accelerate to a running state .

14. Safety related motors with will remain running and re-accelerate to rated speed after momentary (less than 6 seconds) voltage dips to 70% of rated voltage .

15. No longer used .

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LOCA Load Flow With Offsite Power Available Page 25 of 130

16. The SG1-1 Transformer Al TC is set in refe rence to 2400V Bus 1E. To facilitate analysis simulation , Bus A14 is used as the controlled bus since Bus 1E is not always connected and the automatic tap changer will not function properly if the transformer is not aligned to supply the 1E bus . To eliminate this analysis difficulty, Bus A 14 (Safeguards Bus) is used as a surrogate . These buses are in close proximity and the cables between them of significant size such that the impact on results is minimal.

17. The EDSA software is used to produce results . The advanced power flow analysis is used for determination of steady state conditions and the Advanced Motor Starting (Multi-Motor Starting Snapshot Option) is used for motor starting analysis. These power flow routines are used as the reporting bases for the available voltages on the individual buses and motors . The Advanced Transient Stability is used to obtain time plots for the analysis cases and is the basis of the time v. speed , current and voltage plots . It is noted that correlation of the resultant voltages is not perfect between the power flow and transient analysis due to the software computational algorithms . It is further noted in the time analysis , that the "grouped MOV" does not show reaching full rated speed and that load current remains elevated ( this is due to the modeling of the motors with parameters not typical of motors ; e.g. , running power factor higher than starting).

The power flow analysis results are generally more conservative (lower voltages) and are used . It is assumed that the time plots, although providing slightly different voltage results are reliable for recovery time analysis. Since the time analysis results are well below acceptance criteria , this slight variation has no adverse impact on the analysis. 7 .0 ANALYSIS This section describes the development of the LOCA load flow scenarios , development and pre-analysis system conditioning loading , and accident load demand factors . The analysis cases and simulations are then discussed . 7 .1 SCENARIO / CASES Scenarios are selected and designed to accomplish the Objectives (Section 1.2 above) of this analysis in an efficient and concise manner. The scenarios are designed to provide a valid and bounding analysis which yields the data required to effectively evaluate the Auxiliary AC electrical distribution system . Note that the primary intent of these scenarios is not to replicate actual plant or system performance during a LOCA condition , but rather to create a valid and bounding analysis tool that allows for accurate evaluation. The base model used for the LOCA with Offsite Power Available analyses is the EDSA Working Model developed and validated in EA-ELEC-EDSA-001 . The working model contains normally running diversity/demand factors for normal plant loads. Using that

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LOCA Load Flow With Offsite Power Available Page 26 of 130 model and data , "Scenarios" are created within the EDSA software that consist of variations of the loading , power sources and grid voltages . Loads are turned on or off and load values adjusted as necessary to produce a valid and bounding model for the analysis to be run. The appropriate analysis (e .g., load flow or motor starting) is run on each scenario to yield the analysis results . 7 .1.1 Normal Configuration Scenarios/Cases Eighteen specific load scenarios are evaluated . The scenarios can be grouped according two basic power alignment cases : the A Cases in which the power is provided to the 2400V Buses 1C, 1D, and 1E from the Safeguards (SG 1-1) transformer and the B Cases in which the power to the 2400V buses is from the Start-Up transformer (SU 1-2). These alignment cases are divided into two groups; maximum effect on Bus 1D, and maximum effect on Bus 1C. Four or five basic scenarios are included under each power alignment case group A 1/81 (pre-analysis loadflow, A2/B2 dynamic motor starting loadflow/transient stability, A4/84 post motor start loadflow A4.1 /84.1 Bus 1E energized concurrent with P54C start, voltage=pre-event 82.1 P54A/B start@ SLUR reset The scenarios and power alignment cases evaluated within this analysis are listed below and discussed individually in Section 7.5

PALISADES NUCLEAR PLANT - ENGINEERING ANALYSIS CONTINUATION SHEET C a le. No.: EA -ELE C-E DSA-03 Revision 2 Cale . Title : L O CA Loa d Flow With Offsite Power Available P age 27 of 130 Table 7.1 -1 Normal Configuration Scenario/ Case Identification I Case A-1D LOCA w/ 2400V Buses 1C & 1Don SG1-1, Maximum Effect on Bus 1 D (4160V Buses 1A and 1F on SU1-1, Buses 18 and 1G on SU1-3) [Ref. Att. 200-1 D Seriesl Scenario A1-1D Scenario A2-1 D Scenario A4-1 D Scenario A4.1-1 D Adjusted Normal ECCS and MOV ECCS Motors ECCS Motors Load Flow (Pre- Dynamic Motor Running , Bus 1E Running , Bus 1E analysis system Starting , Load Shed Energized , 2400V@ Energized Concurrent conditioning) - Bus Complete, Bus 1D pre-event voltage, P54C Start, 2400V @ 1D Maximum Load Maximum Load Bus 1D Max Load pre-event voltage [Ref. Sec. 7.5.1 & [Sec. 7.5.2 & 8.1.2 , [Ref. Sec. 7.5.3 & [Sec. 7.5.5 & 8.1.4, 8.1 11 Aoo . 1-101 8.1.31 Aoo . N-101 Case B-1D LOCA w/ 2400V Buses 1C and 1 Don SU1-2, Maximum Effect on Bus 1 D (4160V Buses 1A and 1F on SU1-1 , Buses 18 and 1G on SU1-3) [Ref. Att. 300-10 Seriesl Scenario 81 -1 D Scenario 82-1 D Scenario 84-1 D Scenario 84.1-1 D Scenario 82.1-1D Adjusted Normal ECCS and MOV ECCS Motors ECCS Motors ECCS and MOV Load Flow (Pre- Dynamic Motor Running , Bus 1E Running , Bus 1E Motor Start, Delayed analysis system Starting , Load Shed Energized , 2400V @ Energized Concurrent P54A/B Start @ conditioning) - Bus 1D Complete, Bus 1D pre-event voltage, P54C Start, 2400V @ SLUR Reset Maximum Load Maximum Load Bus 1D Max Load pre-event voltage , [Sec. 7.5.4 & 8 .2 .5, [Ref. Sec. 7.5.1 & [Sec. 7.5.2 & 8.2.2. [Ref. Sec. 7.5.3 & [Sec. 7.5.5 & 8.2.4, App. M-10] 8.2.11 Aoo . K-1 Dl 8.2.3] App. 0-10] Case A-1C LOCA w/ 2400V Buses 1C and 1D on SG1-1 , Maximum Effect on Bus 1C (4160V Buses 1A and 1F on SU1-1 , Buses 18 and 1G on SU1-3) [Ref. Att. 200-1 C Seriesl Scenario A1-1C Scenario A2-1 C Scenario A4-1 C Scenario A4.1-1C Adjusted Normal ECCS and MOV ECCS Motors ECCS Motors Load Flow (Pre- Dynamic Motor Running , Bus 1E Running , Bus 1E analysis system Starting , Load Shed Energized , 2400V @ Energized Concurrent conditioning) - Complete, Bus 1C pre-event voltage , P54C Start, 2400V @ Bus 1C Maximum Maximum Load Bus 1C Max Load pre-event voltage Load [Sec. 7.5.2 & 8.3.2, [Ref. Sec. 7.5.3 & [Sec. 7.5.5 & 8.3.4 , [Ref. Sec. 7.5.1 & App . l-1C] 8.3.3] App. N-1C] 8 311 Case B-1C LOCA w/ 2400V Buses 1C and 1Don SU1-2 , Maximum Effect on Bus 1C (4160V Buses 1A and 1F on SU1-1, Buses 18 and 1G on SU1-3) [Ref. Att. 300-1 C Series] Scenario 81 -1 C Scenario 82-1 C Scenario 84-1 C Scenario 84.1-1C Scenario 82.1-1 C Adjusted Normal ECCS and MOV ECCS Motors ECCS Motors ECCS and MOV Load Flow (Pre- Dynamic Motor Running , Bus 1E Running , Bus 1E Motor Start, Delayed analysis system Starting , Load Shed Energized , 2400V@ Energized Concurrent P54A/B Start @ condition ing) - Bus 1C Complete, Bus 1C pre-event voltage , P54C Start, 2400V @ SLUR Reset Maximum Load Maximum Load Bus 1C Max Load pre-event voltage [Sec. 7.5.4 & 8.4.5; [Ref. Sec. 7.5.1 & [Sec. 7.5.2 & 84.2 , [Ref. Sec. 7.5.3 & [Sec. 7.5.5 & 8.4.4, App. M-1C] 8.4.1] Aoo . K-1Cl 8.4 .3] Aoo . 0-1CJ

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LOCA Load Flow With Offsite Power Ava ilable Page 28 of 130 Note: Throughout this analysis , the term "ECCS" motors is meant to include both the emergency core cooling system pump motors and other 2400V and 480V safety-related pump motors that respond to mitigate the event. As noted above , two power distribution cases are considered and are characterized by the power source to 2400 V buses 1C and 1D. Within EDSA, eight scenarios are created ; four scenarios for Bus 1 D maximum load and four scenarios for Bus 1C maximum load. The scenarios for Bus 1Care identified with "1C". The scenarios for Bus 1 Dare identified with "1D." The eight scenarios used in the calculation are listed below as identified in EDSA; 3 -A1/B1 -1 D 4 - A2/B2 - MS - 1D 5 - A2/B2 - TS - 1D 6 -A4/B4 - 1 D 7 - A 1/B1 - 1C 8 - A2/B2 - MS - 1C 9 - A2/B2 - TS - 1C 10 - A4/B4 - 1C The power alignment to buses 1C and 1D is performed manually to yield eighteen (1 8) normal configuration scenario models . Case A evaluates a LOCA with 2400 V buses 1C and 1 D fed from transformer SG 1- 1 , 4160 V buses 1A and 1F fed from transformer SU 1-1 , and 4160 V buses 1 B and 1G fed from transformer SU 1-3. Case B evaluates a LOCA with 2400 V buses 1C and 1 D fed from Startup Transformer SU1-2 while the 4160 V bus power alignment remains unchanged from Case A. Case B includes another variation of previous scenario models to perform analyses of special interest. Scenario B2 .1-1 D and B2.1-1 C evaluates the delayed start of Containment Spray pumps 54A and P54B occurring just as the SLUR relay is about to reset. Only the B Case (2400v 1C and 1 Don SU1-2) is evaluated since the SU1-2 is noted to provide the more limiting voltages. Scenarios A4 .1 and B4 .1 are re-evaluations of Scenarios A4 and B4 except Bus 1 Eis re-energized concurrently with the start of Containment Spray Pump Motor P54C . Although the 4160 volt bus alignments are included in the scenario models , their impact on the analysis is minimal and not a focus of these evaluations [See Assumption 6.0 (11 )] . 7.1.2 Split Bus Scenarios/Cases In addition to the specific load cases described in section 7.1.1, additional load studies are performed to address the possibility that the 2400V buses will be split between transformers. These spilt transformer/bus cases include variations on the operation of one essential bus isolated on SU-1-2 , one essential bus isolated on SG-1-1 , and both essential buses isolated on SU-1-2. Diagrams identify the distribution of buses between the SG1-1 and SU 1-2 and are included in Section 8.5. Sixteen (16) specific load scenarios are evaluated with the same methodology as in the normal configuration cases. These are identified in Table 7.1-2.

PALISADES NUCLEAR PLANT - ENGINEERING ANALYSIS CONTINUATION SHEET Cale. No. : EA-ELEC- EDSA -0 3 Revision 2 Cale. Title : LOCA Load Flow With Offsite Power Availa ble P a ge 29 of 130 Table 7.1-2 Split Bus Configuration Scenario/ Case Identification I Case SU-1C LOCA w/ 2400V Bus 1Con SU 1-2; Buses 1D & 1 Eon SG1-1, Max Effect on Bus 1C (4160V Buses 1A and 1F on SU1-1 , Buses 1B and 1G on SU1-3) [Ref. Att. 400 Series] Scenario SU-1C-81 Scenario SU-1C-82 Adjusted Normal Lo ad Flow (Pre-analysis system ECCS and MOV Dynamic Motor Starting , Load Shed conditioni ng)- Bus 1C Maxim um Load Com plete, Bus 1C Maxim um Load [Ref. Sec. 8.5.1.1] [Ref Sec. 8.5 1.2] Case SU-1D LOCA w/ 2400V Bus 1 D on SU 1-2; Buses 1C & 1E on SG 1-1 , Maximum Effect on Bus 1 D (4160V Buses 1A and 1F on SU1-1 , Buses 1B and 1G on SU1-3) [Ref. Att. 401 Series] Scenario SU-1 D-81 Scenario SU-1D-82 Adj usted Normal Lo ad Flow (Pre-analysis system ECCS and MOV Dynam ic Motor Starting , Load Shed conditioning) - Bus 1 D Maxim um Load Complete, Bus 1 D Maxim um Load [Ref. Sec. 8.5.2 .1] [Ref Sec. 8.5 2 21 Case SU-1 D-2355 LOCA w/ 2400V Bus 1D on SU 1-2; Buses 1C & 1 E on SG 1-1, Maximum Effect on Bus 1 D (4160V Buses 1A and 1F on SU1-1 , Buses 1B and 1G on SU1-3) [Ref. Att. 402 Series] Scenario SU-1 D-2355-81 Scenario SU-1 D-2355-82 Adjusted Normal Load Flow (Pre-analysis system ECCS and MOV Dyn am ic Motor Sta rting, Load Shed cond itioning) - Bus 1 D Maxim um Load Com plete, Bus 1 D Maxim um Load [Ref. Sec. 8.5311 [Sec. 8.5.3.2 & Aoo Rl Case SU-CD-1C LOCA w/ 2400V Buses 1C and 1D on SU 1-2; Bus 1 E on SG 1-1, Max Effect on Bus 1C (4160V Buses 1A and 1F on SU1-1 , Buses 1B and 1G on SU1-3) [Ref. Att. 405 Series] Scenario SU-CD-1 C- Scenario SU-CD-1 C- Scenario SU-CD-1C- Scenario SU-CD-1C- Scenario SU-CD-1C-81 82 84 84.1 82.1 Adj usted Normal ECCS and MOV ECCS Motors ECCS Motors ECCS and MOV Load Flow (Pre- Dynam ic Motor Running , Bus 1 E Running , Bus 1E Motor Sta rt, Delayed analysis system Starting , Load Shed Energized , LTC on , Energized Concurrent P54A/B Start @ condition ing) - Bus 1C Complete , Bus 1C Bus 1C Max Load P54C Start, L TC off SLUR Reset Maximum Load Maxi m um Load [Ref. Sec. 8.5.4.3] [Sec. 8.5.4.4, [Sec. 8 .5.4.5; (Ref. Sec. 8.5.4 .1] [Sec. 8.5.4. 2, App. X] App. W] APP . VJ Case SU-CD-1 D LOCA w/ 2400V Buses 1C and 1D on SU1 -2; Bus 1 E on SG 1-1 , Max Effect on Bus 1 D (4160V Buses 1A and 1F on SU1-1 , Buses 1B and 1G on SU1-3) [Ref. Att. 404 Series1 Scenario SU-CD-1 D- Scenario SU-CD-1 D- Scenario SU-CD-1 D- Scenario SU-CD-1 D- Scenario SU-CD-1 D-81 82 84 84.1 82.1 Adj usted Normal ECCS and MOV ECCS Motors ECCS Motors ECCS and MOV Load Flow (Pre- Dynamic Motor Running, Bus 1 E Running , Bus 1E Motor Start, Delayed ana lysis system Starting , Load Shed Energized , LTC on , Energ ized Concurrent P54A/B Start @ condition ing) - Bus 1 D Complete , Bus 1 D Bus 1 D Max Load P54C Start, L TC off SLUR Reset Maximum Load Maximum Load [Ref. Sec. 8.5.5.3] [Sec. 8.5.5.4, [Sec. 8.5.5.5; [Ref. Sec. 8.5.5.1] [Sec. 8 .5.5.2, App. U] App. T] App. Sl

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LOCA Load Flow With Offsite Power Available Page 30 of 130 7.2 OFFSITE POWER SYSTEM VOLTAGES/BUS 1E LOADING A sensitivity study was performed to determine the most conservative and appropriate grid voltages to use for this analysis . Two voltage settings (Pre-Trip and Post-Trip) were considered ; 369 KV pre-trip/ 358 KV post-trip and 334 KV pre-trip/ 324 KV post trip. The 334 KV to 369 KV range and 3% voltage drop on unit trip is based on Analysis Input 4 .3.2. shows the observed grid voltage over a 12 month period. The B2 motor starting analysis (SU 1-2) was used to evaluate both voltage ranges . Station power loading was also evaluated . The "heavy load" case includes the three large pump motors on Bus 1E running (heater drain; P1 OA, P1 OB and dilution water; P40B). The "light load" case removes the three large pump motors on Bus 1E (P1 OA, P1 OB and P40B) from service, they are not running . Competing factors affect these results such as the heavy load versus light load. This load; P-1 OA, P-1 OB , and P-40B which is in on Bus 1E is load shed upon SIS signal. This provides approximately a 1.5%-2% increase in voltage before and after the motor start in comparison to the light load case. The higher voltage increases the motor starting current of constant impedance loads but decreases the running current of constant power loads which partially offset each other. The system voltage and station power load affect the transformer tap which changes the transformer impedance and also affects the voltage results . The static load also varies depending upon voltage levels, affecting the results. The four cases were setup with the pre-event voltage ranging from 2396V to 2405V (Bus 1D) so the starting point is made as similar as possible. The results indicate the "light load" (with P-1OA, P-1 OB , P-40B off) , 334/324 KV range produced lower steady state values and ECCS motor starting transient voltages (See table 7.2-1 below). Therefore , the lower system voltages and light load cases are used in the analysis . Figure 7.2-1 shows the bus 1D sensitivity to grid voltage and Bus 1E loading variation . The results of this sensitivity analysis are documented in the Attachment 500 series. See Attachments 506 and 507 for light load Vsys =334-324kV. See Attachments 500 and 501 for light load Vsys =369-358kV. See Attachments 502 and 503 for heavy load Vsys = 369-358 kV. See Attachments 504 and 505 for heavy load Vsys =334-324 kV. The remaining results of these Attachments should not be used throughout the analysis , these case are only for this sensitivity section. Table 7.2-1 Grid Voltage Sensitivity Results Summary Voltage (pu) Bus 10 Pre-event During After 369-358 KV-Light Load 1.0028 .7847 .9607 SU tap=0.95-buck 334-324 KV- Light Load .9996 .7499 .9563 SU tap= 1 05625-boost 369-358 KV-Heavy Load 1.0008 .7915 .9729 SU tap=0.9625-buck 334-324 KV- Heavy Load .9983 .7562 .9720 SU tap=1.075-boost

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LOCA Load Flow With Offsite Power Available Page 31 of 130 Figure 7 .2-1 Sensitivity to Grid Voltage & Bus Loading 1 0.95

0.9

J C.

a, cn0.85 ca 0 0.8 0.75 + - - - - - - - - - -- -- -- -- - - -- - - -- - - ---1 0.7 pre-event during after

                         -+- Light Load/369kV --- Light Load/334kV Heavy Load/369kV ~ Heavy Load/334k'v 7.2.1    Sensitivity Cases On Minimum 2400v System Voltage Sensitivity cases were run using the B1 and B2 cases to determine the starting point for an acceptable minimum voltage (both starting and post transient-running) . The cases in revision 1 used an initial 2400V bus voltage of approximately 1.0 per unit. In revision 2 ,

these sensitivity cases lowered the voltage to achieve approximately 2375V, 2350V, 2325V, and then 2337V. It was shown that in both the 2375V and 2350V cases , the recovery voltage on buses 1C and 1D was above the reset of 0.9328 per unit. In the 2325V case , the recovery voltage was below the reset. Then the 2337V case was run to show an approximate correlation with the reset, the case results indicate an acceptable recovery voltage . However, the 2350V case will be used in the further evaluation of cases

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LOCA Load Flow With Offsite Power Available Page 32 of 130 to provide a level of margin. The results for the 2350V cases are in Attachments 702 and 703. 7.3 DEVELOPMENT OF ACCIDENT LOAD DEMAND FACTORS The LOCA analysis is constructed using the Normal Load Flow analysis. The NLF analysis includes demand and diversity factors based on normal plant operating conditions and measured/operational data . These loads may not be representative of the accident condition loads as many of the components do not operate during normal plant operations or have different loading conditions . Therefore , accident demand factors have been developed for use in the LOCA analysis . Load values (KVA, KW, etc.) assigned to the discretely modeled loads in EDSA for the Normal Load Flow analysis are adjusted for the LOCA condition based on calculation EA-ELEC-LDTAB-005 , Emergency Diesel Generator 1-1 and 1-2 Steady State Loadings [Analysis Input 4.1 (6)]. For the ECCS motors, the LOCA load values are based on the Adjusted BHP (brake horse power) identified in Attachments A through X of EA-ELEC-LDTAB-005 and are conservatively selected to envelop both the Injection and RAS modes (i.e. , the higher of the two values is used). The Adjusted BHP values specified in the EA-ELEC-LDTAB-005 Attachments are based on pump flow rate , pump head and efficiency, as determined in other analyses . It is recognized that the pump flow rates considered in the other analyses and incorporated into EA-ELEC-LDTAB-005 were based on only one emergency diesel generator and hence only one train of ECCS systems , being in service and are therefore conservative in this analysis where both trains are used. Appendix D provides the detailed development of the Accident Load Demand Factors for ECCS motor loads. The process is summarized as follows In Appendix D, the ratio of the Adjusted BHP (from LDTAB-005) to motor rated horsepower provides the "% Running " factor input into the EDSA load flow data for each applicable motor. Motor efficiency and power factor from the existing EDSA model are used in conjunction with the% Running Factor and motor rating to develop the actual KW/KVAR load within EDSA. In the case of the Service Water Pump (P7 A, B, C) motor loads , LDTAB-005 Attachments V, Wand X do not provide an adjusted BHP value for the "Bounding Flow." However, KVA , power factor and efficiencies and formulas are identified and used to calculate the Adjusted BHP. Appendix E develops LOCA demand factors for the MCC loads. These demand factors are based on the Motor KVA in the EDSA model and the load KW and power factors in EA-ELEC-LDTAB-005 . The EDSA model KVA is based on the name plate data as determined in the data collection effort and documented in the base EDSA Model [Analysis Input 4.1(1 )]. The demand factors are determined by the LDTAB KW divided by the power factor - a LDTAB KVA - divided by EDSA load KVA (OF= (kw/pf)/ KVA). If the status of the load was not specific and expressly determined to be off (not running) then the normal load flow value is used . Additional notes on the demand factor basis is included in appendix E.

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LOCA Load Flow With Offsite Power Available Page 33 of 130 7.4 MODELING SIMPLIFICATIONS AND ADJUSTMENTS During the development of the dynamic motor starting analyses , EDSA could not converge to a solution when each of the individual MOVs was modeled as starting . Although it was preferred to model the starting of each individual MOV, an alternative method was required . Therefore, rather than modeling the concurrent start of sixteen MOV motors , a composite MOV motor load was added to both MCC 1 and 2 to simulate all of the MOVs from that MCC lumped into one . That motor is started in lieu of the individual MOVs. Appendix F contains the data used to develop the composite load for MCCs 1 and 2 as described herein . From calculation EA-ELEC-EDSA-001 [Analysis Input 4 .1(1 )] , Appendix M, Motor Operated Valve Motor Performance Table , running and locked rotor current, power factor and efficiency for each of those MOVs is taken. Real and reactive components of both the running and locked rotor currents for each MOV are calculated and then summed to yield a total real and reactive current value. From the total real and reactive current components , a composite power factor and current magnitude is determined for both the running and starting (locked rotor) conditions . Composite runn ing efficiency is calculated as the average of the individual efficiencies. The resulting composite MOV data is input into the MCC-1 -X and MCC-2-X load on the respective MCC in the EDSA model. No cable is modeled between the composite MOV load and the MCC . This is acceptable since for the starting condition the motor is modeled as a constant impedance load . Without the additional cable , overall impedance is reduced which in turn results in higher load current and increased voltage drop throughout the entire supply circuit , and ultimately a lower MCC bus voltage . During the running period , the MOV behaves as a constant power load that does draw more current due to the cable's voltage drop . However due to the constant power characteristics of the MOV the impact on MCC voltage is less detrimental than the impact due to MOV starting current. Treatment of MOVs as a constant power load is a less severe condition with respect to supply circuit voltage drop , simply because there is less current. The starting period is used for evaluation of the entire period because the constant impedance approach is bounding. The resulting MCC bus voltage is then compared to the minimum required MCC voltage for starting and running as calculated in EA-ELEC-VOL T-051 [Analysis Input 4.1(4)] which does include consideration of the individual MOV supply cables. During the development of the dynamic motor starting analyses it was also noted that EDSA would not converge to a solution without an adjustment to the modeling of the Boric Acid Pumps P56A and P56B. Each pump motor is supplied by 3-1/C #6 AWG cables ; one conductor per phase. However, to allow convergence to a solution , the model was adjusted to include two 1/C-#6 AWG cables per phase for each Boric Acid Pump motor. 7.5 SCENARIO DETAILS The following sections provide specific details of the analysis scenarios/cases . These sections describe the scenarios in terms for A/B cases with the loading being equivalent

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LOCA Load Flow With Offsite Power Available Page 34 of 130 and the bus power sources different. Any unique differences between the two cases are also described. 7.5.1 Scenario A1/B1, Adjusted Normal Load Flow (Pre-analysis System Conditioning) This scenario evaluates the condition just prior to the LOCA and is used to determine a conservative tap setting on the SG1-1 (SU1-2) transformer which is also the tap setting used in the ECCS motor starting evaluation . No credit is given to the transformer tap changer to adjust transformer voltage in time to support ECCS motor starting. Therefore the tap setting is assumed to remain unchanged from this Base Case loading scenario throughout the ECCS dynamic motor starting scenarios . Per Assumption 6.0(9) , the temperature within containment is 90°C for this scenario . The main generator is in service and power alignment of the 4160 V buses is typical for normal power operation (all aligned to SP transformers) as modeled in EA-ELEC-EDSA-001 . The Plant is assumed to have been operating in a normal condition and bounded by the loading associated with the Working Model of EA-ELEC-EDSA-01 . However, as is typical with load flow analyses , loading tends to be conservatively heavy to yield worst case voltage drop . Increased load could result in a less conservative transformer tap setting in an attempt to boost voltage to compensate for the additional losses due to the higher loads. Consequently some load changes to the NLF Working Model used as the basis for this scenario are incorporated to lessen the load and arrive at a more conservative transformer tap setting. Such as P1 OA, P1 OB , and P40B are turned off in accordance with the sensitivity analysis in section 7.2. All loads associated with the normal load flow model remain in service for this scenario unless specially identified in Table 7.5.2-3-1 D and Table 7.5.2.3-1C . In addition, the NLF loading associated with each component (KW, KVA, etc.) remains unchanged for this scenario . 7.5.2 Scenario A2/B2, ECCS Motor and MOV Start, Load Shed Complete This scenario evaluates the dynamic start of ECCS (2400V and 480V) and MOV motors after SIS load shed with offsite power available. In this scenario , the LOCA has occurred and initiated the SIS , CHP (Containment High Pressure) and CHR (Containment High Radiation) logics. The main generator is assumed tripped and the 4160 V buses 1A, 1B, 1F and 1G have transferred to the SU1-1 and SU1-3 transformers. As noted , SIS load shedding has occurred . Loading reflects the LOCA condition rather than normal plant operation . To bound the hot standby condition , Auxiliary Feed Pump PSA or PSC is assumed to be running . Conductors within containment are set to 172°C consistent with Assumption 6.0(9) and temperatures used in calculations EA-ELEC-VOL T-050 and EA-ELEC-VOL T-051 . With these conditions set, a multi-motor dynamic starting analysis is performed on the

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LOCA Load Flow With Offsite Power Available Page 35 of 130 ECCS motors that start on either an SIS or CHP signal. Per E-17 sheets 4 and 6, Containment Spray Pumps P54A, 8 , and Care placed in standby (STBY) by SIS and started by CHP logic. Containment Spray Pump P54C incorporates a 15 second delayed start. Per Analysis Inputs 4.2(1 ), (3) and (4) , drawing E17 sheets 4, 6 , and 7 respectively , the list of loads shed/ tripped are provided in Table 7.5.2-1 and the ECCS and MOV motors receiving start signals are provided in Table 7.5.2-2 . In some cases, however, loads that receive SIS start signals will already be running for the plant to be at power and are already modeled as running in scenario A1/81 . The initial status (from scenario A1/81) of those loads receiving a start signal is noted in Table 7.5.2-2 and whether it will be started or remain running in scenario A2/82 (MOVS only) . Tables 7.5.2-3-1 D and 7.5.2-3-1 C below shows the distribution of load for running and starting loads per bus. Operations were consulted to determine if they considered the distribution of loads with respect to which feed (left or right train) was the source of power. Operations does not consider the source of power, therefore either the left train or right train could be heavily loaded with the other train being lightly loaded . The load distribution was determined to model the maximum load on Bus 1C and maximum load on Bus 1D separately. The motor start cases model the loads starting as shown in Tables 7.5.2.3-1 D and 7.5 .2 1D & 7.5.2.3-1C and 7.5.2-4-1C. Since the voltage drops below 70% for charging pumps P55A/8/C and below contactor pickup on boric acids pump P56A/8 and MCC 1 & 2 MOVs, these loads are initially modeled with a static load to simulate the inrush current of these motors in the transient stability runs. To model the equivalent static load for these seven motors, a node was inserted in the model (if needed) and named "P55A-IN" for example. Two low impedance branches were added , one to the existing motor and labeled "P55A-M-branch ,"and the other branch to the static load labeled "P55A-S-branch" for example. The static load was then labeled "P55A-Z," the naming convention follows the load (i.e. P558, P56A, MCC-1-X-Z ... ). The "load flow" tab data for the static load was matched to the "short circuit" data of these motors. Motor start cases were then run to determine accuracy of the static load motor start model. In all cases start voltage was within 0.004 per unit of the non-static load case; see Attachment 703a 82 Zload edsa05. This case is labeled "Attachment 703a 82-24002-match to EDSA05test". The "During" voltage reported is the value of interest here since the maximum voltage drop is being compared . The "Before" and "After" parameters are not relevant in this comparison. The event manager for Case Study 82-MS was uses event scenario 82 . The transient stability cases for each motor were run comparing the maximum voltage drop when starting the motor (all static inrush loads off) to the maximum voltage drop using the static inrush load "running." The% running data tab in the static inrush load was modified and transient stability run to obtain a close match to the maximum voltage drop. These cases resulted in% running values of 70%, 70% , 70%, 75%, 75%, 70%, and 70% for P55A/8/C , P56A/B, MCC 1-MOV, and MCC2-MOV respectively in the load flow tab of the

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LOCA Load Flow With Offsite Power Available Page 36 of 130 equivalent static inrush loads. The event manager for Case Study B2-TS was then modified to model the static inrush loads as running until the proper recovery voltage level was obtained (pickup voltage or motor rated voltage). The static inrush loads were modeled as initially running , then tripped at time= 0, then reclosed at time =1 second to simulate the starting at 1.0 seconds . This was done with a "branch tripping" function in the event manager. Transient stability runs were completed to determine the time the voltage recovered to pickup or starting voltage. The event manager was then modified to "branch trip" the appropriate static inrush load and start the motor at the appropriate time. Event scenario B2-Z controls th is scenario . Table 7.5.2-1 LOADS SHED OR TRIPPED LOAD BREAKER Dilution Water Pump P40A 152-102 2400V Bus 1E Feeder Breaker 152-302 2400V Bus 1E Feeder Breaker 152-303 480V LC-77 Feeder Breaker 52-7701 480V LC-77 Tie Breaker 52-7804 Containment Cooling Unit V1 B 52-317 Containment Cooling Unit V2B 52-327 Containment Cooling Unit V3B 52-337 1 Containment Cooling Unit V4B <> 52-417 23 Air Room Purge Fan V-46 < , > 52-713 (B07-ML7) 3 Condensing Unit VC-11 <> 52-2524 3 Condensing Unit VC-10 <> 52-2624 (1) Also de-energ ized by trip of Bus 1E. (2) Not discretely modeled in EDSA, see Motor Schedule MCC-7-ML. (3) Tripped by CHP logic, Reference E17 sheet 6.

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LOCA Load Flow With Offsite Power Available Page 37 of 130 Table 7.5.2-2 LOADS RECEIVING SIS, CHP START SIGNAL ACTUATION LOAD BREAKER SIGNAL Service Water Pump P7 A 152-204 SIS-X6 Service Water Pump P7B 152-103 SIS-X7 Service Water Pump P7C 152-205 SIS-X6 Aux FW Pump P8A l 2,5> 152-104 --- Aux FW Pump P8C l 2,5l 152-209 --- Component Cooling Pump P52A 152-109 SIS-X7 Component Cooling Pump P52B 152-208 SIS-X6 Component Cooling Pump P52C 152-116 SIS-X7 Containment Spray Pump P54A 1 ' 1 152-210 5P-8 Containment Spray Pump P54B 111 152-112 5P-7 Containment Spray Pump P54C 1 .~, 152-114 5P-7 Charging Pump P55A 52-1205 SIS-X6 Cha rging Pump P55B 52-1206 SIS-X6 Chargi ng Pump P55C 52-1105 SIS-XS Boric Acid Pump P56A 52-287 SIS-X6 Boric Acid Pump P56B 52-191 SIS-XS HP Safety Injection Pump P66A 152-207 SIS-X2 HP Safety Injection Pump P66B 152-113 SIS-X1 LP Safety Injection Pump P67A 152-206 SIS-X2 LP Safety Injection Pump P67B 152-111 SIS-X1 101 Containment Cooling Fan V1A 52-1208 N/A 101 Containment Cooling Fan V2A 52-1209 N/A 101 Containment Cooling Fan V3A 52-1210 N/A 101 Containment Cooling Fan V4A 52-1108 N/A 3 52-161 , 52-127, M02087, M02169. M02170 ( l 52-187 SIS-XS 3 M02140 <> 52-227 SIS-X6 52-137 , 52-197, M03007,M03009,M03013 (3l SIS-X1 52-151 52-141 , 52-147, M03008, M03010, M03011 l3l SIS-X3 52-157 52-247, 52-251 , M03012, M03014, M03062, M03066, 52-241 , 52-257, SIS-X4 M03068 (3l 52-261 3 M03064 <> 52-237 SIS-X2

1. Started by CHP signal

2. Assumed running to bound hot standby condition , does not receive auto start signal

3. Modeled as one composite MOV load rather than starting each individual MOV

4. 15 second delayed start, See Special Case B2.1

5. In addition, P40A and P8A/C are assumed running in the pre-accident analysis cases A1/B1

6. Containment fans do not receive SIS start, but are listed for completeness since they do have sequencer start for OBA and NSD. Normal operation is three fans. Three fans running to minimize preload.

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LOCA Load Flow With Offsite Power Available Page 38 of 130 Table 7.5.2-3-1 D Starting and Running Load Distribution-Max Load for Bus 1 D Scenario Starting Starting Runn ing Running LOAD BUS HP A2/B2 Bus D Bus C Bus D Bus C SW Pump P7A 2400V 10 350 Running 350 SW Pump P7B 2400V 1C 350 Running 350 SW Pump P7C 2400V 10 350 Start 350 Aux FW Pump P8A 2400V 1C 450 Off Aux FW Pump P8C 2400V 10 400 Running 400 Comp Clg Pump P52A 2400V 1C 300 Running 300 Comp Clg Pump P52B 2400V 10 300 Start 300 Comp Clg Pump P52C 2400V 1C 300 Start 300 Cont Spray Pump P54A 2400V 10 250 Start 250 Cont Spray Pump P54B 2400V 1C 250 Start 250 Cont Spray Pump P54C 2400V 1C 250 Off (1l Charg ing Pump P55A 480V LC-12 (D) 100 Start 100 Charg ing Pump P55B 480V LC-12 (D) 75 Start 75 Charging Pump P55C 480V LC-11 (C) 75 Running 75 Boric Acid Pump P56A 460V MCC-2 (D) 30 Start 30 Boric Acid Pump P56B 460V MCC-1 (C) 30 Start 30 HPSI Pump P66A 2400V 10 400 Start 400 HPSI Pump P66B 2400V 1C 400 Start 400 LPSI Pump P67A 2400V 10 400 Start 400 LPSI Pump P67B 2400V 1C 400 Start 400 Cont Clg Fan V1A 480V LC-12 (D) 75 Running 75 Cont Clg Fan V2A 480V LC-12 (D) 75 Running 75 Cont Clg Fan V3A 480V LC-12 (D) 75 Running 75 Cont Clg Fan V4A 480V LC-11 (C) 75 Off 1 ( ) 15 Second delayed start; See Special Case 82 .1 1905 1380 975 725 Bus Bus Delta 525 Delta 200

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LOCA Load Flow With Offsite Power Available Page 39 of 130 Table 7.5.2-3-1 C Starting and Running Load Distribution-Max Load for Bus 1C Scenario Starting Starting Running Running LOAD BUS HP A2/B2 Bus D Bus C Bus D Bus C SW Pump P7A 2400V 10 350 Runn ing 350 SW Pump P7B 2400V 1C 350 Start 350 SW Pump P7C 2400V 10 350 Running 350 Aux FW Pump P8A 2400V 1C 450 Running 450 Aux FW Pump P8C 2400V 10 400 Off Comp Clg Pump P52A 2400V 1C 300 Start 300 Comp Clg Pump P52B 2400V 10 300 Running 300 Comp Clg Pump P52C 2400V 1C 300 Start 300 Cont Spray Pump P54A 2400V 10 250 Start 250 Cont Spray Pump P54B 2400V 1C 250 Start 250 1 Cont Spray Pump P54C 2400V 1C 250 Off < l Charging Pump P55A 480V LC-12 (D) 100 Start 100 Charging Pump P55B 480V LC -12 (D) 75 Runn ing 75 Charging Pump P55C 480V LC-11 (C) 75 Start 75 Boric Acid Pump P56A 460V MCC-2 (D) 30 Start 30 Boric Acid Pump P56B 460V MCC-1 (C) 30 Start 30 HPSI Pump P66A 2400V 10 400 Start 400 HPSI Pump P66B 2400V 1C 400 Start 400 LPSI Pump P67A 2400V 10 400 Start 400 LPSI Pump P67B 2400V 1C 400 Start 400 Cont Clg Fan V1A 480V LC-12 (D) 75 Running 75 Cont Clg Fan V2A 480V LC-12 (D) 75 Runn ing 75 Cont Clg Fan V3A 480V LC-12 (D) 75 Off Cont Clg Fan V4A 480V LC-11 (C) 75 Runn ing 75 1 <l 15 Second delayed start; See Special Case B2 .1 1180 2105 1175 525 Bus Bus Delta 925 Delta 650

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LOCA Load Flow With Offsite Power Available Page 40 of 130 Table 7.5.2-4-1 D Starting and Running Motor & Zload Distribution - Bus 1D Grid (kV) 333.250 323.2525 323.2525 Load Al/Bl A2/B2 A4/B4 Description MS TS MCC-1-X off start start off MCC-1 MOV motors Constant Z starting equivalent MCC-1-X-Z off off 70%-on off for MCC-1 MOV motors MCC-2-X off start start off MCC-2 MOV motors Constant Z starting equivalent MCC-2-X-Z off off 70%-on off for MCC-2 MOV motors P56A off start start run Boric Acid motor Constant Z starting equivalent P56A-Z off off 75%-on off for boric acid motor P56B off start start run Boric Acid motor Constant Z starting equivalent P56B-Z off off 75%-on off for boric acid motor PSSA off start start run Charging motor Constant Z starting equivalent PSSA-Z off off 70%-on off for charging motor PSSB off start start run Charging motor Constant Z starting equivalent PSSB-Z off off 70%-on off for charging motor PSSC run run run run Charging motor Constant Z starting equivalent PSSC-Z off off off off for charging motor

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LOCA Load Flow With Offsite Power Ava ilable Page4 1 of 130 Table 7.5.2-4-1C Starting and Running Motor & Zload Distribution - Bus 1C Grid (kV) 333.500 323.495 323.495 Load Al/Bl A2/B2 A4/B4 Description MS TS MCC-1-X off start start off MCC-1 MOV motors Constant Z starting equivalent MCC-1-X-Z off off 70%-on off for MCC-1 MOV motors MCC-2-X off start start off MCC-2 MOV motors Constant Z starting equivalent MCC-2-X-Z off off 70%-on off for MCC-2 MOV motors P56A off start start run Boric Acid motor Constant Z starting equivalent P56A-Z off off 75%-on off for boric acid motor P56B off start start run Boric Acid motor Constant Z starting equivalent P56B-Z off off 75%-on off for boric acid motor P55A off start start run Charging motor Constant Z starting equivalent P55A-Z off off 70%-on off for charging motor P55B run run run run Charging motor Constant Z starting equivalent P55B-Z off off off off for charging motor P55C off start start run Charging motor Constant Z starting equivalent P55C-Z off off 70%-on off for charging motor Note: The differences between Tables 7.5.2-4-1 D and 7.5 .2-4-1 Care P55B, P55B-Z, P55C, and P55C-Z. The other loads remain the same . 7.5.3 Scenario A4/B4, ECCS Motors Running with Bus 1E Re-En'ergized. This scenario evaluates the longer term steady state condition with 2400 V bus 1E manually re-energized . At this point, Low Pressure Safety Injection Pumps P67 A and B, Charging Pumps P55A, B, and C, and Boric Acid Pumps P56A and B, could tie tripped but are conservatively left running . Containment Spray pump P54C is assumed to have started and is running at its LOCA load value (starting of P54C is evaluated in Scenarios A4 .1/B4.1 ). Bus 1E loads assumed to be re-energized are 480 volt transformers #14/200,

160, #90/91, and #78/50. For conservatism the buses fed by these transformers are assumed to be re-energized at their previous (NLF) base load levels.

The load tap changers on either the SG1 -1 or SU1 -2 are assumed to have responded to the transient and have adjusted to achieve their predetermined voltage settings accord ing I

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LOCA Load Flow With Offsite Power Available Page 42 of 130 to their calibrated control ci rcuit. A non-Tap adjustment case is evaluated in Scenario B4 .1 and resulted in voltage not recovering above the reset. Grid voltage is at its assumed post-trip value of 97% of 334 KV. LOCA load values are used as described in Section 7.3 above . Information on this page This Seen Pumps P5 has been superseded as tainment Spray rvoltage relays are about t SIS logic a indicated in the enclosed the pump . Since ignals from the the contain start just a Engineering Change ntthebuspumps voltage could drop durin bus voltage transient in reset withi 77045, markup of revent SLUR condition . Note that pump signal and EA-ELEC-EDSA-03, ofagetheisCHP start recovered . To achieve tap chang LOCA with Offsite Power h the transformer This Seen Available. I and multiple r just prior to SLUR reset This special case scenario is performed only for the "B" alignment case (2400V 1C and 1D on SU 1-2) since it was noted during the preparation of this analysis that the B Case bus voltages are limiting . The results of the B2 .1 scenario bound any results of a similar A2.1 scenario , therefore only the more limiting scenario is evaluated . This special scenario addresses the concerns of Condition Report AR01018366. 7.5.5 Special Case Scenario A4.1 (84. 1), ECCS Motors Running, Bus 1E Energized Concurrent with P54C Start. Since the "C" Containment Spray pump (P54C) includes a 15 second delay on a CHP start signal , its start could occur during the period bounded by Scenario A4/B4. Therefore , this scenario evaluates the dynamic starting of pump P54C during conditions similar to those of scenario B4 with the following exceptions . The SG 1-1 (SU 1-2) transformer's tap has operated after the ECCS motors have started and are at steady state conditions. The voltage has recovered to 2350V. The bounding case of a concurrent start of pump P54C and the re-energizing of Bus 1E is evaluated using EDSA's Advanced Motor Starting and Advanced Transient Stability tool s. Similar to the A4/B4 scenario , all other ECCS motors remain running at their LOCA load values and grid voltage is 97% of 334kV.

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LOCA Load Flow With Offsite Power Available Page 43 of 130 7.6 IMPLEMENTATION OF SCENARIOS IN THE EDSA MODEL SOFTWARE Implementation of the scenarios described above is performed using the EDSA Working Model of EA-ELEC-EDSA-001 as modified and described herein . In the EDSA Master File Editor under the Scenario tab is a listing of the scenarios modeled in this EDSA "Project". The scenarios are identified by both an EDSA scenario number (1 , 2, 3 ... ) and a name, e.g ., A1/B1 LOCA Pre-Analysis Load . Throughout this calculation they have primarily been referred to by an abbreviated form of their name (A 1/B1 , A2/B2 , etc.). 7.6.1 Scenario Set Up The scenarios are setup to run the analyses with min imal changes to the model. In the event changes are required or restoration is needed , Appendix C provides a listing of all the breakers and associated loads contained in the EDSA Model. Appendix C should be used in conjunction with Tables in section 7.5 for scenario setup. Each of the three basic scenarios is identified along with a color coded tabulation of corresponding breaker/load settings. Using these settings, each scenario can be setup if required . It should be noted that except for the distribution breakers between buses, circuit breakers supplying individual loads are not actually operated (set to Open or Close) ; rather the load itself is turned On or Off. Red cells with black lettering indicate the load is On , or in the case of distribution breakers, Closed . Red cells with white lettering indicate that the load will be "Started ." Red cells (regardless of lettering color) indicate the load is adjusted to a LOCA value rather than the NLF value . Green cells indicate the load will be Off or the breaker will be Open. White cells indicate the load or breaker will remain as-is from the NLF model. Gray cells indicate that the load is de-energized since some upstream breaker is open. Attachments 1ODA and 1DOB include a Data Input Report printout which can be used to restore the model to its original form if required. The individual circuit breakers at Buses 1C, 1D and 1E are opened and closed to align the appropriate transformer to supply the bus depending on the Case scenario being evaluated. To switch from an "A" scenario to a "B" scenario or vice versa , open the breakers from one transformer and close the breakers from the other, no other distribution system changes are required. However, changes may also be required to the Transformer tap settings as described below , depending on the scenario to be evaluated . 7.6.2 Transformer LTC Setting Determination Treatment of the load tap changers in the A1/B1 and A4/B4 (L TC On) scenarios includes a sequence of actions to obtain the appropriate setting . After this determination of the setting , the tap changer is turned Off for the remaining analyses cases as described and except as noted . The process to determine the proper tap is discussed below. In the Load Flow tab for the Transformer edit window Automatic Tap Adjustment controls are included. With the tap changer turned "ON " (to view additional control buttons) the

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LOCA Load Flow With Offsite Power Available Page 44 of 130 Controlled Bus for the SG1 -1 transformer should be set to "Bus-A 14" as a surrogate for Bus 1E [Assumption 6.0(16)]and the Acceptable Voltage (pu) set to the Low Limit value from Appendix G; (1 .007) . Both the min and max settings are set to the low limit value which

targets a more conservative setting . For the SU1-2 transformer the Controlled Bus is "SU-1-2-LS" (EDSA node at transformer secondary) and the Acceptable Voltage during a normal pre-event condition is 1.005 per the Low Limit from Appendix G. The Acceptable Voltage was chang*ed in the cases to determine the minimum pre-event voltage with recovery to just above the relay reset with iterations of 2375V, 2350V, and 2325V. With these values entered , the Tap Changer is turned "ON " the Advanced Load Flow analysis is Run. The resulting voltage on the Controlled Bus should be noted , it is desired that it be within the low and high limits noted in Appendix G but as low as possible. EDSA does not always arrive at an actual tap setting , for the secondary tap . Based on the resulting controlled bus voltage , the secondary tap may require adjustment to match the appropriate actual setting (visible under the "steps" button) to produce a bounding value at or just below the allowable "as-left" value. Once an actual tap setting is selected the Tap changer is turned "OFF" and the Advanced Load Flow analysis run again . Also , when selecting the Z adjustment factor, the program uses more significant digits for the impedance and can slightly reduce round off error. However, the re is little impact on results .

7.6.3 Bus Loading and Connections LOCA load values for individual loads are implemented by adjusting the "% Running " value under the Load Flow tab in the load 's edit window to match the Demand Factor value from Appendix Dor Appendix E. 7.6.4 Performance of Analyses Using EDSA Evaluation of identified scenarios is done using the EDSA Advanced Power Flow , Advanced Motor Starting and Advanced Transient Stability tools . The Power Flow analysis is used to evaluate steady state conditions. For these cases , the loads are set to running , tap operation or position is selected , and the analysis routine is executed. The results are steady state voltages and power flows. The results are exported to Excel compatible files for analysis and compilation . These results are also used in the setting of taps and event time in other analyses routines. For each scenario that includes dynamic conditions such as motor starting , the Multi-Motor starting routine is executed. This is a sub-routine of the Advanced Motor Starting analysis . After setting the motors to be started and selecting the Advanced Motor Starting under the Power Flow analysis , the simultaneous multi-motor simulation method is selected under options menu . The results include prestart, during , and post start voltages . These results are exported for review, reporting and compilation. For all dynamic events , a second series of analyses is performed using the Advanced Transient Stability analysis. This tool provides a simulation of the events that are occurring and provides actual time v. parameter (voltage , speed, current) profiles for the various

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LOCA Load Flow With Offsite Power Available Page 45 of 130 events being evaluated . These cases are implemented using the Event Manager under the Transient Data/Event Folder. A Case Study is created and events are added by clicking the Add button and selecting the desired event from the pull down menu . Selecting the "Start Motor" or closing branches (breakers) to simulate the re-energization of Bus 1E. The start time for each event and overall event duration is specified in the Event Manager. For analysis convenience and to allow obseNation of the pre-event parameters , events are started at 1 second . A duration of sufficient length to ensure the entire SLUR time delay was enveloped is used. The results of the simulations are exported using the graphical interface of the simulation screen . These graphs are used for review , reporting and analysis. 8.0 RES UL TS AND CONCLUSIONS The results of the computer analysis are provided as attachments to this calculation as noted in Section 9.0. The results are summarized in the following sections and in Appendices A, B, and performance parameter (voltage, current, and speed) plots are provided in Appendices I through Q. Note that the EDSA results expressed in per unit values use a system voltage base (2400V or 480V) even for motor terminal voltages rather than motor rated voltage . Consequently, a 0.9 pu at the terminals of a 2400V bus 1C supplied motor correlates 0.9391 pu if the motors rated voltage was used as the base. The following table provides a correlation between system and component base and per unit voltages. System PU Motor PU 2400 I 480 2300 I 460 1.0 1.0435

                                      .90                   .9391
                                      .70                   .7304
                                    .9583                     1.0
                                    .8625                     .90
                                    .6708                     .70

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LOCA Load Flow With Offsite Power Available Page 46 of 130 8.1 CASE A-1 D, STEADY STATE LOCA WITH 2400 V BUSES 1C AND 1D ON SG1-1 The following sections provide the results of the Case A Scenarios. These cases include the preconditioning , motor start and long-term operation with the 2400V buses powered from the Safeguards Transformer. 8.1.1 Scenario A 1-1 D, Adjusted Normal Load Flow (Pre-analysis system conditioning) The primary output of the A-10 scenario is the resulting tap setting of the SG1-1 transformer. The resulting tap is 1.03125 with a voltage setpoint on the controlled bus (A14-(SG)) of 0.97917 per unit or 2350V. The resulting SG1-1 tap setting is determined using the methodology described in Section 7.6.2 . Other load flow information produced by / this analysis is not used in any of the subsequent analyses. To determine the minimum pre-analysis voltage, the system voltage was lowered to achieve the desired/acceptable voltage on the 2400V system. The voltage was lowered to achieve approximately 2350V on the 2400V system by lowering the 345kV system voltage to 333.250 kV. See Attachment 200-1 D. 8.1.2 Scenario A2-1 D, ECCS and MOV Motor Starting, (Transient) Load Shed Complete In this scenario power is provided to the 2400V buses 1C and 1D by the SG 1-1 transformer. The transformer's tap is fixed at the resulting tap from Scenario A 1 which is 1.03125 . With the turbine trip , grid voltage drops 3% (of 333.250 kV) to 323.2525 kV and load shedding has occurred . Motors that receive an SIS and CHP start signal are assumed to start. A summary of bus voltage for the safety related buses, acceleration times for starting motors, and branch currents to the 2400V buses during Scenario A2 is provided below.

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LOCA Load Flow With Offsite Power Available Page 47 of 130 A2 -1 D Safety Related Bus Voltage Summary Bus Voltage Limiting Limiting Limiting Time to MCC MCC MCC SLUR Volts for Volts for Volts for Reset Contactor Load MOV 1 2 Bus Vsase Before During After (Sec) Pickup Operation Start2 Bus-1C 2400 0.9638 0.7755 0.9404 3.290 Bus-1 D 2400 0.9634 0.7698 0.9391 3.500 MCC-1 480 0.9682 0.7380 0.9379 0. 8771 0.8754 0.8492 MCC-2 480 0.9713 0.7386 0.9406 0.8956 0.8733 0.8300 MCC-21 480 0.9639 0.7656 0.9394 0.8232 0.8670 0.7217 MCC-22 480 0.9563 0.6591 0.9195 0.8138 0.6741 0.6994 MCC-23 480 0.9645 0.7661 0.9400 0.8234 0.6769 0.7230 MCC-24 480 0.9561 0.6586 0.9193 0.8725 0.8353 0.7076 MCC-25 480 0.9719 0.7485 0.9429 0.8869 0.8703 (3) MCC-26 480 0.9738 0.7473 0.9442 0.8992 0.8694 (3) (1) From Calculation EA-ELEC-VOLT-050 (2) From Calculation EA-ELEC-VOLT-051 (3) MOVs on MCC 25 and 26 do not receive an auto start signal associated with a OBA.

PALISADES NUCLEAR PLANT - ENGINEERING ANALYSIS CONTINUATION SHEET Cale. No. : EA-ELEC-EDSA-03

Revision 2 Cale.

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LOCA Load Flow With Offsite Power Available Page 48 of 130 A2-1 D Motor Voltage/ Acceleration Time Summary Motor Terminal Voltage Min Req'd Acee!. Motor Time Terminal Motor Vbase Before During After (Sec) Volts 2 1 P7A-(SW) 2400 0.9614 0.7673 0.9371 0.6708 1 P7B-(SW) 2400 0.9622 0.7734 0.9388 0.6708 P7C-(SW) 2400 0.9634 0.7625 0.9374 1.33 0.6708 P8A-(AF) 2400 off off off 0.6708 1 P8C-(AF) 2400 0.9627 0.7689 0.9384 0.6708 1 P52A-(CC) 2400 0.9634 0.7750 0.9400 0.6708 P52B-(CC) 2400 0.9634 0.7680 0.9387 0.67 0.6708 P52C-(CC) 2400 0.9638 0.7737 0.9400 0.67 0.6708 P54A-(CS) 2400 0.9634 0.7666 0.9385 3.26 0.6708 P54B-(CS) 2400 0.9638 0.7737 0.9401 3.12 0.6708 P54C-(CS) 2400 off off off 0.6708 P55A 480 0.9568 0.6289 0.9123 0.91 0.6708 P55B 480 0.9568 0.6251 0.9099 0.67 0.6708 1 P55C 480 0.9608 0.7614 0.9362 0.6708 P56A 480 0.9713 0.7230 0.9319 2.67 0.6708 P56B 480 0.9682 0.7246 0.9310 2.37 0.6708 P66A-(HPSI) 2400 0.9634 0.7674 0.9384 2.95 0.6708 P66B-(HPSI) 2400 0.9638 0.7735 0.9398 2.84 0.6708 P67A-(LPSI) 2400 0.9634 0.7669 0.9384 0.92 0.6708 P678-(LPSI) 2400 0.9638 0.7712 0.9393 0.92 0.6708 (1) Motor Running , No Start (2) 70% for 2300V and 460V rated motors is 0.6708Vpu at 2400V and 480V base, 90% for 2300V and 460V rated motors is 0.8625Vpu at 2300V and 480V

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LOCA Load Flow With Offsite Power Available Page 49 of 130 A2-1D Branch Current Flow Summary Steady Peak Peak Steady State From To Branch (PU) (Amps) State (PU) (Amps) SG1 -1 Bus 1C A11-EX02-SUB1-2 0.0798 1919.7 0.0315 757 .8 SG1-1 Bus 1D A12-A14-SUB1-2 0.1064 2559.6 0.0393 945.4 lbase = Sbasef(Vbase X Sqrt 3) = 100 MVA/(2400V X 1.732) = 24,056 .26 A= 1 pu Data from Append ix 1-1 D A complete summary of bus voltage results and motor acceleration times for Scenario A2 is provided in Appendix A-1 D while a print out of the EDSA results for this scenario is provided in Attachment 201 -1 D. Transient voltage plots and motor speed/current graphs are provided in Appendix 1-1 D. 8.1.2.1 Results Discussion for 2400V Buses and Motors During the ECCS motor starting voltage transient, the limiting factor for 2400V Buses 1C and 1 D is voltage recovery to 0.9328 volts (pu) within 6.0 seconds to prevent SLUR initiated transfer of the buses to Emergency Diesel Generators (EDGs) . Review of the 2400V bus voltages indicates that Bus 1C voltage dips to 0.7755 pu and recovers to 0.9404 pu . SLUR reset is achieved in 3.29 seconds . Similarly, Bus 1D voltage dips to 0. 7698 pu and recovers to 0.9391 pu. SLUR reset is achieved in 3.50 seconds. Bus 1C and 1D voltages remain well above the FLU R's actuation curve such that FLUR actuation is not a concern. Voltage recovers to greater than 0.7750 pu well within the time to prevent the actuation of the FLU Rs. All 2400V motors accelerate and achieve 98% of their rated speed within 4 seconds . The longest acceleration time for any of the 2400V motors was 3.26 seconds for the P54A Containment Spray pump. Voltages at the medium voltage (2400V) motor terminals are greater than 70 percent of rated voltage during start and recover to greater than 90 percent of rated. All 2400V motors start and accelerate to at least 0.98pu speed. 8.1.2.2 Results Discussion for 480V Buses and Loads As discussed in section 7.5.2 static inrush loads are modeled for charging pumps P55A/B/C , boric acid pumps P56A/B, MCC 1-MOVs, and MCC 2-MOVs until the voltage recovers to an acceptable level. Starting voltage requirement for these motors are given in Table 8.1.2.2 below. Timing to start motors is controlled by event manager scenario A2-Z.

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LOCA Load Flow With Offsite Power Available Page 50 of 130 Table 8.1 .2.2 Sta rt*1nQ Requiremen ts for SeecI ted 480V Loa d s Motor Vstart - Required Time to Vstart P55A 0.6708 1.774 P55B 0.6708 1.840 P55C running running P56A 1 0.8172 c@ MCC 2 2.089 P56B 1 0.8640 (@ MCC 1 3.729 MCC-1-X 1 0.8771 3.916 MCC-2-X 1 0.8956 4.095 (1) From Calculation EA-ELEC-VOLT-050 All 480 motors accelerate and achieve 98% of their rated speed within 3 seconds except as discussed in section 1.3.1. The longest acceleration time for any of the 480V motors was 2.67 seconds for the P-56A. Voltages at the 480V motor terminals and Motor Control Centers recover to required minimum starting voltage as denoted in the table above and recover to greater than 90 percent of rated voltage after acceleration . MCCs 1, 2, 21-26 voltage recovers to 0.9193 per unit or above . Charging pumps recover to 0.9099 per unit or above. Boric acid pumps recover to 0.9310 per unit or above. MCC 24 voltage drops to 0.6586 pu which is less than the required hold-in voltage of 0.6670 pu determined in Analysis Input 4.1 .3. The only affected motor is V24C , Diesel Generator K6B Room Cooling Fan . If 42-2425 (ac contactor/starter for V24C) should drop out, the circuit will re-energize when MCC 24 voltage recovers to 0.8725 pu (pick-up) in approximately 3 seconds. Temperature switch contacts TS/1821 or TS/1822 remain closed dependent upon diesel generator room temperature, reference Analysis Input 4.2.8. The maximum required hold-in voltage for the other MCC 24 motors is less than 0.6586 pu and they remain energized during the event. 8.1.3 Scenario A4-1 D, ECCS Motors Running with Bus 1E Re-Energized Scenario A4 evaluates the steady state condition after the ECCS motors have started and are running. MOV operation is complete and Bus 1Eis re-energized. Loading on the ECCS pumps are set at bounding values (See Appendix D) to envelope any expected mode of operation. MCC loads are at LOCA values as identified in Appendix E. Containment Spray Pump P54C is running . . System voltage remains the same at 323 .2525 kV. The SG1-1 tap changer is functional and has adjusted to control voltage to the previous pre-event voltage of 2350V (2350/2400= 0.97917. The resulting tap is 1.0875, which is the third to last tap, only two more tap positions remain.

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LOCA Load Flow With Offs ite Power Available Page 51 of 130 A4 Safety Related Bus Voltage Summary Limiting Limiting A4 MCC MCC Limiting (SG1-1 LTC Time to Volts for Volts for MCC On) SLUR Reset Contactor Load Volts for 1 2 Bus Vbase Steady State (Sec) Pickup Operation MOV Start2 Bus-1C 2400 0.9767 No Drop Out Bus-10 2400 0.9758 No Drop Out MCC-1 480 0.9771 0.8771 0.8754 0.8492 MCC-2 480 0.9792 0.8956 0.8733 0.8300 MCC-21 480 0.9771 0.8232 0.8670 0.7217 MCC-22 480 0.9604 0.8138 0.6741 0.6994 MCC-23 480 0.9792 0.8234 0.6769 0.7230 MCC-24 480 0.9604 0.8725 0.8353 0.7076 MCC-25 480 0.9813 0.8869 0.8703 0.7143 MCC-26 480 0.9813 0.8992 0.8694 0.7213 (1) From Calcu lation EA-ELEC-VOLT-050 (2) From Calcu lation EA-ELEC-VOL T-05 1 Branch Current Flow - Case A Scenario A4 From Bus To Bus Branch Code (L TC On) (Amps) SG-1-1-LS 152-401-LS (Bus A14 (SG)) A14-X07 2031 SP-1-2-LS-TBOX 152-105-LS (Bus 1C) A 11-EX02-SUB1-2 797 BUS-A 14-(SG) 152-203-LS (Bus 10 ) A 12-A 14-SUB 1-2 911 BUS-A14-(SG) 152-302-LS (Bus 1 E) A 13-A 14-SUB1-2 324

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LOCA Load Flow With Offsite Power Available Page 52 of 130 Transformer Loading - Case A Capacity Scenario A4 (L TC On) Transformer (KVA) Loading (KVA) Loading(%) SG1-1 10500 8802 73 SU1-2 10600 0 0 SP-11 750 336.7 45 SP-12 750 567.8 76 SP-13 750 (1) 363.7 (87.6A) 48 SP-14 750 539 72 SP-15 750 0 0 SP-16 750 487.7 65 SP-19 750 434.6 58 SP-20 750 369.7 49 SP-200 750 244.8 33 (1) 150A (High side) load limit per SOP-30 A summary of bus voltage results for Scenario A4-1 Dis provided in Appendix A-1 D. A printout of EDSA bus voltage results for this scenario is provided in Attachment 203-1 D. A printout of EDSA transformer loading, and branch current flows is provided in Attachment 203-1 Da. Voltages on 2400V buses 1C and 1D are greater than 0.97 pu and do not challenge the second level undervoltage relays. Voltages on all of the safety related buses are 0. 9625 pu or above and adequate for operation of all loads. Review of Appendix A-1 D and 03-1 Da (page 65-Bus Flow) data indicated that all relevant running motors have terminal voltages in excess of 90 percent, or 0.8625 pu at 480V base . The few motors that have terminal voltages less than rated are P203B , VCT 30A-xx and VCT 30B-xx are cooling tower loads that would be tripped and are not relevant to this case. Steady state transformer loading is within the rating of all transformers. It is noted that loading for this analysis is conservatively heavy to produce conservative voltages. Additional analysis specific to transformer loading may be warranted. Similarly, the resulting current flows identified above may be artificially high due to the conservative nature of this analysis . It should be identified that the addition of Bus 1E is a manual action that would not be performed if adequate capacity to support the additional load was not available.

PALISADES NUCLEAR PLANT - ENGINEERING ANALYSIS CONTINUATION SHEET Cale. No. : EA-ELEC-EDSA-03 Revision 2 Cale.

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LOCA Load Flow With Offsite Power Available Page 53 of 130 8.1.4 Scenario A4.1 -1 D, ECCS Motors Running, Bus 1E Energized, LTC On, CS Start Scenario A4 .1 evaluates the condition after the ECCS motors have started and are running . MOV operation is complete then Bus 1E is re-energized and Containment Spray Pump P54C is starting . Loading on the ECCS pumps are set at bounding values (See Appendix D) to envelope any expected mode of operation. MCC loads are at LOCA values as identified in Appendix E. The SG1-1 transformer auto-tap changer has operated and adjusted voltage to the pre-event 2400V bus voltage of 2350V. Then Bus 1E is re-energized and Containment Spray Pump P54C starts simultaneously. The pre-event loadflow is run with the grid voltage at 97% of 334kV (333 .250kV) = (323.2525kV) , P54C is off and Bus 1Eis not energized. The SG 1-1 tap changer solves to 1.075. (If Bus 1E is re-energized prior to the 2400V buses recovering to 2350V, the second level undervoltage relay reset will not be satisfied and offsite power will be lost.) This results in a voltage of 2347V at Bus 1D and 2350V at Bus 1C. These are the only values relevant to this scenario as it sets up the next step of re-energizing Bus 1E and starting P54C . The pre-event (set-up) voltage results and transformer tap are provided in Attachment 203-1 Db. The motor starting case using the Paladin Advanced Motor Starting routine and Transient Stability locks the SG 1-1 tap at 1.075, re-energizes Bus 1E (close breaker 152-302), and starts P54C . The grid remains at 323 .252 .5kV. The transient stability is controlled by event manager A4 .1/B4 .1 with Bus 1E energ izing and P54C starting at 1.0 seconds. A summary of bus voltage results for Scenario A4.1 -1 D is provided in Appendix A-1 D. A print out of EDSA motor starting results for this scenario is provided in Attachment 203-1De. Plots are provided in Appendix N-1 D A4.1 -1D Safety Related Bus Voltage Summary Limiting Time to MCC Limiting A4 .1 Mtr Start SLUR Volts for Volts for Limiting (SG1-1 LTC Off) Reset Contactor Load Volts for 23 Bus Vbase Before During After (Sec) Pickup 1 Operation

Start2*3 Bus-1C 2400 0.9674 0.9423 0.9654 n/a Bus-1 D 2400 0.9661 0.9427 0.9642 n/a MCC-1 480 0.9671 0.9409 0.9650 0.8771 0.8754 0.8492 MCC-2 480 0.9693 0.9450 0.9674 0.8956 0.8733 0.8300 MCC-21 480 0.9676 0.9414 0.9655 0.8232 0.8670 0.7217 MCC-22 480 0.9510 0.9261 0.9490 0.8138 0.6741 0.6994 MCC-23 480 0.9683 0.9420 0.9662 0.8234 0.6769 0.7230 MCC-24 480 0.9508 0.9258 0.9488 0.8725 0.8353 0.7076 MCC-25 480 0.9708 0.9446 0.9687 0.8869 0.8703 0.7143

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LOCA Load Flow With Offsite Power Available Page 54 of 130 A4 .1-1D Safety Related Bus Voltage Summary Limiting Time to MCC Limiting A4 .1 Mtr Start SLUR Volts for Volts for Limiting (SG1-1 LTC Off) Reset Contactor Load Volts for 1 23 23 Bus Vbase Before During After (Sec) Pickup Operation

Start
MCC-26 480 0.9707 0.9464 0.9687 0.8992 0.8694 0.7213 P7A-(SW) 2400 0.9641 0.9407 0.9623 0.8625 0.6708 P7B-(SW) 2400 0.9658 0.9406 0.9638 0.8625 0.6708 P7C-(SW) 2400 0.9641 0.9407 0.9622 0.8625 0.6708 P8A-(AF) 2400 off off off 0.8625 0.6708 P8C-(AF) 2400 0.9654 0.9420 0.9635 0.8625 0.6708 P52A-(CC) 2400 0.9670 0.9419 0.9650 0.8625 0.6708 P52B-(CC) 2400 0.9656 0.9423 0.9638 0.8625 0.6708 P52C-(CC) 2400 0.9670 0.9418 0.9649 0.8625 0.6708 P54A-(CS) 2400 0.9654 0.9420 0.9635 0.8625 0.6708 P54B-(CS) 2400 0.9671 0.9419 0.9650 0.8625 0.6708 P54C-(CS) 2400 0.9674 0.9402 0.9650 0.8625 0.6708 P55A 480 0.9474 0.9223 0.9453 0.8625 0.6708 P55B 480 0.9472 0.9221 0.9452 0.8625 0.6708 P55C 480 0.9646 0.9381 0.9624 0.8625 0.6708 P56A 480 0.9640 0.9396 0.9620 0.8625 0.6708 P56B 480 0.9628 0.9365 0.9606 0.8625 0.6708 P66A-(HPSI) 2400 0.9652 0.9418 0.9633 0.8625 0.6708 P66B-(HPSI) 2400 0.9668 0.9417 0.9648 0.8625 0.6708 P67 A-(LPSI) 2400 0.9653 0.9420 0.9635 0.8625 0.6708 P67B-(LPSI) 2400 0.9662 0.9411 0.9642 0.8625 0.6708 V1A 480 0.9404 0.9151 0.9383 0.8625 0.6708 V2A 480 0.9409 0.9156 0.9388 0.8625 0.6708 V3A 480 0.9384 0.9131 0.9364 0.8625 0.6708 V4A 480 0.9684 0.9421 0.9662 0.8625 0.6708 (1) From Calculation EA-ELEC-VOLT-050 (2) From Calculation EA-ELEC-VOLT-051 for MCCs.

(3) 70% for 2300V and 460V rated motors is 0.6708V pu at 2400V or 480V base, 90% for 2300V and 460V rated motors is 0.8625V pu at 2400V or 480V base

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LOCA Load Flow With Offsite Power Available Page 55 of 130 Voltage on 2400V buses 1C and 1D do not dip below the SLUR drop out point of 0.9280 per unit as shown in Appendix N-1 D. During the P54C motor start all bus voltages remain above 0.90 pu and all motor terminal voltages remain above 90% of rated (.8625V pu at 480V base) except for some cooling tower loads that are not relevant to this scenario. Per Appendix N-1 D, the transient stability shows pump motor P54C starts and accelerates to within 0.98 percent of rated speed in 2.253 seconds. Transformer loading and current flows are similar to scenario A4-1D for the time frame in which the transformer tap is responding to this changing environment. Once the transformer tap adjusts to the steady state condition , it is the same as scenario A4-1 D and the transformer loading and current flows are exactly the same. 8.2 CASE 8-1 D, STEADY STATE LOCA WITH 2400 V BUSES 1C AND 1D ON SU1-2 8.2.1 Scenario 81 -1 D, Adjusted Normal Load Flow (Pre-analysis system conditioning) The primary output of the B 1 scenario is the resulting tap setting of the SU 1-2 transformer. The resulting tap is 1.0375 with a voltage setpoint on the controlled bus (SU-1-2-LS) of 0.97917 pu. The resulting SU1 -2 tap setting is determined using the methodology described in Section 7.6.2. Other load flow information produced by this analysis is not used in any of the subsequent analyses . To determine the minimum pre-analysis voltage, the system voltage was lowered to achieve the desired/acceptable voltage on the 2400V system . The voltage was lowered to achieve approximately 2350V on the 2400V system by lowering the 345kV system voltage to 332.950 kV. See Attachment 300-1 D.

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LOCA Load Flow With Offsite Power Available Page 56 of 130 8.2.2 Scenario 82-1 D, ECCS and MOV Motor Starting, (Transient) Load Shed Complete In this scenario power is provided to the 2400V buses 1C and 1D by the SU1-2 transformer. The transformer's tap is fixed at the resulting tap from Scenario B1 , which is 1.0375. 1 With the turbine trip, grid voltage drops 3% (of 332.950kV) to 322 .9615kV and load shedding has occurred . Motors that receive an SIS and CHP start signal are assumed to start. A summary of bus voltages for safety related buses , acceleration times for starting motors , and branch currents to the 2400V buses during Scenario B2 is provided below. 82 -10 Safety Related Bus Voltage Summary Bus Voltage Limiting Limiting Limiting Time To MCC MCC MCC SLUR Volts for Volts for Volts for Reset Contactor Load MOV 1 2 Bus Vbase Before During After (Sec) Pickup Operation Start2 Bus-1C 2400 0.9657 0.7458 0.9386 4.24 Bus-10 2400 0.9652 0.7454 0.9380 5.08 MCC-1 480 0.9701 0.7082 0.9360 0.8771 0.8754 0.8492 MCC-2 480 0.9733 0.7096 0.9389 0.8956 0.8733 0.8300 MCC-21 480 0.9658 0.7340 0.9375 0.8232 0.8670 0.7217 MCC-22 480 0.9584 0.6309 0.9177 0.8138 0.6741 0.6994 MCC-23 480 0.9664 0.7345 0.9381 0.8234 0.6769 0.7230 MCC-24 480 0.9582 0.6304 0.9175 0.8725 0.8353 0.7076 MCC-25 480 0.9738 0.7185 0.9410 0.8869 0.8703 (3) MCC-26 480 0.9758 0.7180 0.9424 0.8992 0.8694 (3) (1) From Calculation EA-ELEC-VOLT-050, Rev. 3 (2) From Calculation EA-ELEC-VOLT-051 , Rev. 1 (3) MOVs on MCC 25 and 26 do not receive an auto start signal associated with a OBA

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LOCA Load Flow With Offsite Power Available Page 57 of 130 82-1 D Motor Voltage/ Acceleration Time Summary Motor Terminal Voltage Min Req'd Motor Termina Accel. I 2 Motor Vbase Before During After Time (Sec) Volts 1 P7A-(SW) 2400 0.9634 0.7382 0.9354 0.6708 1 P78-( SW) 2400 0.9640 0.7436 0.9369 0.6708 P7C-(SW) 2400 0.9653 0.7337 0.9357 1.44 0.6708 P8A-(AF) 2400 off off off off 0.6708 P8C-(AF) 2400 0.9646 0.7398 0.9367 0.6708 1 P52A-(CC) 2400 0.9652 0.7452 0.9382 0.6708 P528-(CC) 2400 0.9653 0.7390 0.9370 0.74 0.6708 P52C-(CC) 2400 0.9657 0.7440 0.9382 0.74 0.6708 P54A-(CS) 2400 0.9653 0.7377 0.9368 3.44 0.6708 P548-(CS) 2400 0.9657 0.7441 0.9383 3.35 0.6708 P54C-(CS) 2400 off off off off 0.6708 P55A 480 0.9588 0.6020 0.9105 0.92 0.6708 P558 480 0.9588 0.5983 0.9081 0.75 0.6708 1 P55C 480 0.9627 0.7295 0.9343 0.6708 P56A 480 0.9733 0.6945 0.9302 2.67 0.6708 P568 480 0.9701 0.6954 0.9291 2.40 0.6708 P66A-0.9653 0.7384 0.9367 0.6708 (HPSI ) 2400 3.1 4 P668-0.9657 0.7438 0.9380 0.6708 (HPSI ) 2400 3.05 P67A-0.9653 0.7380 0.9367 0.6708 (LPSI ) 2400 0.99 P678-0.9657 0.7416 0.9375 (LPSI) 2400 1.01 0.6708 (1) Motor Running , No Start (2) 70% for 2300V / 460V rated motors is 0.6708Vpu at 2400V I 480V. 90% for 2300V I 460V rated motors is 0.8625Vpu at 2400V I 480V

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LOCA Load Flow With Offsite Power Available Page 58 of 130

                                         ~2-1 D Branch Current Flow Summary Steady       Steady Peak        Peak        State        State From           To             Branch           (PU)       (Amps)       PU)         (Amps)

SU1-2 Bus 1C A11-X04-SUB1-2 0.0777 1869 0.0315 758 SU1-2 Bus 1D A 12-X04-SUB 1-2 0.1035 2490 0.0394 948 lbase = Sbasef(Vbase X Sqrt 3) = 100 MVA/(2400V X 1.732) = 24,056.26 A= 1 pu Data from Appendix K-1 D A summary of bus voltage results and motor acceleration times for Scenario 82-1 D is provided in Appendix B-1 D. Transient voltage plots and motor speed/current graphs are provided in Appendix K-1 D. A print out of EDSA results is provided in Attachment 301-1 D. 8.2.2.1 Results Discussion for 2400V Buses and Motors During the ECCS motor starting voltage transient, limiting factors for 2400V buses 1C and 1D include voltage recovery to 0.9328 volts (pu) within 6.0 seconds to prevent transfer of the buses to Emergency Diesel Generators (EDGs). Review of the 2400V bus voltages indicates that during the ECCS motor starts, Bus 1C voltage dips to 0. 7458 pu and recovers to 0.9386 pu. Bus 1C voltage recovers to the SLUR reset voltage of 0.9328 pu in 4.24 seconds. Similarly, Bus 1D voltage dips to 0. 7454 pu and recovers to 0. 9380 pu. Bus 1D voltage recovers to the SLUR reset voltage in 5.08 seconds . SLUR reset is achieved. Bus 1C and 1D voltage remains well above the FLU R's actuation curve such that FLUR actuation is not a concern . Voltage recovers to greater than 0.7750 pu well within the time to prevent the actuation of the FLU Rs . All 2400 motors accelerate and achieve 98% of their rated speed within 4 seconds . The longest acceleration time for any of the 2400V motors was 3.44 seconds for the P54A Containment Spray pump. Voltages at the medium voltage (2400V) motor terminals are greater than 70 percent of rated voltage during start and recover to greater than 90 percent of rated. All 2400V motors start and accelerate to at least 0.98 pu speed . 8.2.2.2 Results Discussion for 480V Buses and Loads As discussed in section 7 .5.2 static inrush loads are modeled for charging pumps P55A/B/C, boric acid pumps P56A/B, MCC 1-MOVs, and MCC 2-MOVs until the voltage recovers to an acceptable level. Starting voltage requirement for these motors are given in Table 8.2.2.2 below. Timing to start motors is controlled by event manager scenario 82-Z.

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LOCA Load Flow With Offsite Power Available Page 59 of 130 Table 8.2.2.2 startmQ Requiremen t s f or S e Iected 480V Loa d s Motor Vstart - Required Time to Vstart P55A 0.6708 2 .032 P55B 0.6708 2 .166 P55C runninQ running P56A 1 0.8172@ MCC 2 2.545 P56B 1 0.8640@, MCC 1 3.998 MCC-1-X 1 0.8771 4 .182 MCC-2-X 1 0.8956 4.361 (1) From Calculation EA-ELEC-VOLT-050 All 480 motors accelerate and achieve 98% of their rated speed within 3 seconds except as discussed in section 1.3.1. The longest acceleration time for any of the 480V motors was 2.67 seconds for the P-56A. Voltages at the 480V motor terminals and Motor Control Centers recover to required minimum starting voltage as denoted in the table above and recover to greater than 90 percent of rated voltage after acceleration. MCCs 1, 2, 21-26 voltage recovers to 0.9175 per unit or above. Charg ing pumps recover to 0.9081 per unit or above. Boric acid pumps recover to 0.9291 per unit or above . MCC 24 voltage drops to 0.6304 pu which is less than the requ ired hold-in voltage of 0.6670 pu determined in Analysis Input 4.1 .3. The affected motors are V24C ; Diesel Generator K6B Room Cooling Fan and V24D ; Diesel Generator K6B Room Cooling Fan . If 42-2425 or 42-2435 (ac contactor/starter for V24CN24D) should drop out, the circu it(s) will re-energize when MCC 24 voltage recovers to 0.8725 pu (pick-up) in approximately 3 seconds. Temperature switch contacts TS/1821 or TS/1822 (V24C) and TS/1823 or TS/1820 (V24D) remain closed dependent upon diesel generator room temperature , reference Analysis Input 4.2 .8. The maximum required hold-in voltage for the other MCC 24 motors is less than 0.6304 pu and they remain energized during the event. 8.2.3 Scenario 84-1 D, ECCS Motors Running with Bus 1 E Re-Energized Scenario 84 evaluates the steady state condition after the ECCS motors have started and are running . MOV operation is complete and Bus 1Eis re-energized. Loading on the ECCS pumps are set at bounding values (See Appendix D) to envelope any expected mode of operation . MCC loads are at LOCA values as identified in Appendix E. Containment Spray Pump P54C is running . System voltage remains the same at 322.9615kV. The SU1-2 tap changer is functional and has adjusted to control voltage to the previous pre-event voltage of 2350V (2350/2400= 0.97917 . The resulting tap is 1.10, which is the last tap .

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LOCA Load Flow With Offsite Power Available Page 60 of 130 84-1 D Safety Related Bus Voltage Summary I Limiting Limiting MCC MCC Limiting 84 Time To Volts for Volts for MCC (SU1-2 LTC On) SLUR Reset Contactor Load Volts for 1 2 Bus Vbase Steady State (Sec) Pickup Operation MOV Start2 I Bus-1 C 2400 0.9758 No Drop Out I Bus-1 D 2400 0.9746 No Drop Out I MCC-1 480 0.9750 0.8771 0.8754 0.8492 I MCC-2 480 0.9792 0.8956 0.8733 0.8300 I MCC-21 480 0.9771 0.8232 0.8670 0.7217 I MCC-22 480 0.9604 0.8138 0.6741 0.6994 I MCC-23 480 0.9771 0.8234 0.6769 0.7230 I MCC-24 480 0.9604 0.8725 0.8353 0.7076 I MCC-25 480 0.9792 0.8869 0.8703 0.7143 I MCC-26 480 0.9792 0.8992 0.8694 0.7213 I (1) From Calculation EA-ELEC-VOLT-050 (2) From Calculation EA-ELEC-VOLT-051 Transformer Loading - Case 84-1 D Capacity Scenario 84 (L TC On) Transformer (KVA) Loading (KVA) Loading% SG1-1 10500 0 0 SU1-2 10600 8900 .7 69 SP-11 750 336.7 45 SP-12 750 567.7 76 SP-13 750 (1) 363.4(90) 48 SP-14 750 539.3 72 SP-15 750 0 0 SP-16 750 486.7 65 SP-1 9 750 434.2 58 SP-20 750 369 .5 49 SP-200 750 245.0 33 (1) 150A (High side) load limit per SOP-30

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LOCA Load Flow With Offsite Power Available Page 61 of 130 Branch Current Flow - Case 8 4-1 D Scenario B4 From Bus To Bus Branch Code (LTC On) (Amps) SU-1-2-LS 152-106-LS (Bus 1C) A11-X04-SUB1-2 798 SU-1-2-LS 152-202-LS (Bus 1D) A12-X04-SUB1-2 912 SU-1-2-LS 152-303-LS (Bus 1E) A 13-X04-SUB 1-2 324 A summary of bus voltage results for Scenario 84-1 D is provided in Appendix 8 -1 D and 03-1 D. A print out of EDSA results for transformer loading , and branch current flows are provided in Attachment 303-1 Da . Voltages on 2400V buses 1C and 1Dare greater than 0.97 pu and do not challenge the second level undervoltage relays Voltages on all of the safety related buses are 0.9604 pu or above and adequate for operation of all loads. Review of Appendix 8 -1 D and 03-1 Da (page 72-Bus Flow) data indicated that all relevant running motors have terminal voltages in excess of 90 percent, or 0.8625 pu at 480V base. The few motors that have terminal voltages less than rated are P2038, VCT 30A-xx and VCT 308-xx are cooling tower loads that would be tripped and are not relevant to this case. Steady state transformer loading is within the rating of all transformers . Again it is noted that loading for this analysis is conservatively heavy to produce conservative voltages . Additional analysis specific to transformer loading may be warranted. The resulting current flows are high and exceed the emergency (LOCA) condition continuous ratings specified in SOP-30 , Section 4.3 . The feeder to 2400V Bus 1C is supplying 798A and exceeds the SOP-30 LOCA rating (795A) by 0.4%. The feeder to 2400V Bus 10 is supplying 912A and exceeds the SOP-30 LOCA rating (810A) by 12%. It should be noted that in an effort to achieve a bounding analysis , system load is inflated and the resulting current flow is not necessarily representative of expected actual current flow . However, operator action to reduce the unnecessary load would be required if necessary as is already incorporated into the SOP (Section 4.3.d). Further, the higher loads are a short term affect. The impact of the higher currents is an elevated temperature which may result in a reduction of cable life . SOP-030 already includes load monitoring requirements to address the cable loading issue . 8.2.4 Scenario 84.1 -1 D, ECCS Motors Running, Bus 1 E Energized, LTC On, CS Start Scenario 84.1 evaluates the condition after the ECCS motors have started and are running. MOV operation is complete and Bus 1E is re-energized and Containment Spray Pump P54C is starting . Loading on the ECCS pumps are set at bounding values (See Appendix D) to envelope any expected mode of operation . MCC loads are at LOCA values as identified in Appendix E.

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LOCA Load Flow With Offsite Power Available Page 62 of 130 The case for starting containment Spray Pump P54C after Bus 1Eis re-energized but prior to the tap changer operating resulted in Buses 1C and 1D not recovering above the reset. Therefore, prior to re-energizing Bus 1Ethe 2400V bus voltage must recover to the pre-event voltage of 2350V at Buses 1C/1 D. DRN-13-00865 was initiated to ensure the voltage recovery prior to re-energizing Bus 1E. Scenario B4.1 now evaluates the above condition with SU 1-2 transformer auto-tap changer having operated and the voltage at Buses 1C/1 D has recovered to 2350V. Then Bus 1E is re-energized and containment Spray Pump P54C starts prior to the tap changer operating from re-energizing bus 1E. The pre-event loadflow is run with the grid voltage at 97% of 334kV (332.950kV) = (322 .9615kV), P54C is off and Bus 1Eis not energized . The SU 1-2 transformer auto-tap changer is 1.0875. This results in a voltage of 2351 Vat Bus 1D and 2354V at Bus 1C. These are the only values relevant to this scenario as it sets up the next step of re-energizing Bus 1E and starting P54C. The pre-event (set-up) voltage results are provided in Attachment 303-1 Db. The motor starting case using the Paladin Advanced Motor Starting routine and Transient Stability locks the SU 1-2 tap at 1.0875, re-energizes Bus 1E (close breaker 152-303), and starts P54C. A final load flow is not run since the transformer loading and branch current flows would be similar to those values provided in scenario B4-1 D. The only difference is the tap on SU 1-

2. The branch currents are expected to be slightly larger in this scenario due to the effect of lower voltage on constant power loads.

A summary of bus voltage results for Scenario B4 .1-1 Dis provided in Appendix B-1 D. A print out of EDSA results for is provided in Attachment 303-1 De. Plots are provided in Appendix 0-1 D.

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LOCA Load Flow With Offsite Power Available Page 63 of 130 84.1-1 D Safety Related Bus Voltage Summary Time Limiting 84.1 Motor Start To MCC Limiting (SU1-2 LTC Off) SLUR Volts for Volts for Limiting Reset Contactor Load Volts for 1 Ops2,3 23 Bus Vbase Before During After (Sec) Pickup Start

Bus-1C 2400 0.9670 0.9356 0.9645 n/a Bus-10 2400 0.9657 0.9365 0.9635 n/a MCC-1 480 0.9666 0.9339 0.9640 0. 8771 0.8754 0.8492 MCC-2 480 0.9689 0.9386 0.9666 0.8956 0.8733 0.8300 MCC-21 480 0.9672 0.9343 0.9645 0.8232 0.8670 0.7217 MCC-22 480 0.9506 0.9194 0.9482 0.8138 0.6741 0.6994 MCC-23 480 0.9678 0.9349 0.9652 0.8234 0.6769 0.7230 MCC-24 480 0.9504 0.9192 0.9480 0.8725 0.8353 0.7076 MCC-25 480 0.9703 0.9376 0.9677 0.8869 0.8703 0.7143 MCC-26 480 0.9703 0.9399 0.9680 0.8992 0.8694 0.7213 P7A-(SW) 0.9638 0.9345 0.9615 0.8625 0.6708 P78-(SW) 0.9653 0.9339 0.9628 0.8625 0.6708 P7C-(SW) 0.9637 0.9344 0.9615 0.8625 0.6708 P8A-(AF) 0.9670 0.9356 0.9645 0.8625 0.6708 P8C-(AF) 0.9651 0.9358 0.9628 0.8625 0.6708 P52A-(CC) 0.9666 0.9351 0.9640 0.8625 0.6708 P52B-(CC) 0.9653 0.9360 0.9630 0.8625 0.6708 P52C-(CC) 0.9665 0.935 1 0.9640 0.8625 0.6708 P54A-(CS) 0.9650 0.9358 0.9628 0.8625 0.6708 P548-(CS) 0.9666 0.9352 0.9641 0.8625 0.6708 P54C-(CS) 0.9670 0.9335 0.9641 0.8625 0.6708 P55A 0.9470 0.9156 0.9446 0.8625 0.6708 P558 0.9468 0.9155 0.9444 0.8625 0.6708 P55C 0.964 1 0.9310 0.9614 0.8625 0.6708 P56A 0.9637 0.9331 0.9613 0.8625 0.6708 P56B 0.9623 0.9294 0.9596 0.8625 0.6708 P66A-(HPSI) 0.9649 0.9356 0.9626 0.8625 0.6708

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LOCA Load Flow With Offsite Power Ava ilable Page 64 of 130 84.1-1 D Safety Related Bus Voltage Summary Time Limiting 84.1 Motor Start To MCC Limiting (SU1-2 LTC Off) SLUR Volts for Volts for Limiting Reset Contactor Load Volts for Bus Vbase Before During After (Sec) Pickup 1 Ops2.3 Start 2*3 P668-(HPSI) 0.9664 0.9349 0.9638 0.8625 0.6708 P67 A-(LPSI) 0.9650 0.9357 0.9627 0.8625 0.6708 P678 -(LPSI ) 0.9658 0.9343 0.9632 0.8625 0.6708 V1A 0.9400 0.9084 0.9376 0.8625 0.6708 V2A 0.9405 0.9089 0.9380 0.8625 0.6708 V3A 0.9380 0.9064 0.9356 0.8625 0.6708 V4A 0.9679 0.9350 0.9653 0.8625 0.6708 (1 ) From Calculation EA-ELEC-VOLT-050 (2) From Calculation EA-ELEC-VOL T-051 for MCCs. (3) 70% for 2300V and 460V rated motors is 0.6708V pu at 2400V or 480V base, 90% for 2300V and 460V rated motors is 0.8625V pu at 2400V or 480V base Voltage on 2400V buses 1C and 1D do not dip below the SLUR drop out point of 0.9280 per unit. During the P54C motor start all bus voltages remain above 0.90 pu and all motor terminal voltages remain above 90% of rated (.8625V pu at 480V base) except for some cooling tower loads that are not relevant to this scenario. Per Appendix 0 -1 D, the transient stability shows pump motor P54C starts and accelerates to within 0.98 percent of rated speed in

2. 276 seconds . This case is the same as re-energizing Bus 1E and starting Containment Spray Pump P54C simultaneously which was scenario B4 .2 in revision 1, scenario B4.2 has been deleted from revision 2.

Transformer loading and current flows are similar to scenario B4-1 D for the time frame in which the transformer tap is responding to this changing environment. Once the transformer tap adjusts to the steady state condition , it is the same as scenario B4 .1-1 D and the transformer loading and current flows are exactly the same.

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LOCA Load Flow With Offsite Power Available Page 65 of 130 8.2.5 Scenario 82.1 -1 D, ECCS Motor Start, Delayed P54A/B Start Concurrent w/ SLUR Reset This scenario evaluates the unique condition of starting Containment Spray Pumps P54A and P54B just as 2400V bus 1C and 1D voltage is recovering and the SLURs are about to reset. The concern is a delay in SLUR reset due to the two motors starting such that the SLUR time delay expires and the safety related buses are transferred to the emergency diesel generators. Containment Spray pumps receive start signals from the CHP logic whose actuation is variable with respect to time and is dependent on the LOCA and other factors . This event occurs just after the ECCS motors start in response to the SIS while those motors are accelerating and voltage is recovering . To achieve the most conservative results with respect to voltage and SLUR reset this scenario starts the two Containment Spray Pumps just prior to either 2400V bus voltage reaching 0.9328V pu . This was determined through multiple runs of the EDSA software similar to the B2 scenario , the SU1-2 transformer tap remains set at the pre-event position of 1.0375 and grid voltage is 322.9615 KV. This scenario addresses the concerns of Condition Report AR01018366 . Since the primary concern of this scenario is achieving SLUR reset and not to evaluate the entire distribution system only sufficient data is gathered to demonstrate reset. To implement the simulation , all Scenario B2 loads except P54A, B, and Care simulated starting and the time to reset determined to be 3.707 seconds . Also , starting initiation times for selected 480V motors are shown in Table 8.2 .5. (No plots provided for determining these values) .. These values (including the 1 second simulation start delay) is input to the event manager (Case Study B2 .1-Z) for the starting time for the P54A and B pumps and 480V motors . The result of the simulation with all Scenario B2-1 D loads starting - with P54A and B being delayed - are provided in Appendix M-1 Da-SU for the bus voltage profile and P54A and P54B motor speed/current graphs. From Appendix M-1 Da-SU , Bus 1C and 1D voltage dips to a minimum of 0.774 pu during the ECCS block start of all motors except P54A, B and C. Voltage recovers to 0.932 pu on Bus 1C at 2.706 seconds and 0.930 pu on Bus1 D at 2.707 seconds after the ECCS motor start. It is noted that a later start in the event manager would result in exceeding the SLUR reset prior to starting the CS pumps. It is noted that the specified time intervals are approaching the EDSA software integration time step limitations, therefore . Some slight variations in time values are introduced). At this time , 2.707 seconds after ECCS motor start, both Containment Spray pumps P54A and B are started and voltage dips to approximately 0.89 pu on both 2400V buses and 0.88 pu at both Containment Spray pump motor terminals. Ultimately voltage on Bus 1C recovers to 0.933 (SLUR Reset) after 5.562 seconds total elapsed time . Voltage on Bus 1D recovers to 0.933 (SLUR Reset) after 5.657 seconds total elapsed time . Based on these results it is concluded that the second level undervoltage relays achieve reset prior to expiration of the 6.0 second time delay and subsequent transfer of the 2400V buses to the EDGs. It is noted that the minimum voltage at the Containment Spray pump motor terminals is 0.884V pu which is sufficient to ensure motor start and acceleration to rated speed . Pump motors P54A and P54B achieve rated speed in approximately 2.7 seconds (6.396-

3. 707=2.689) .

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LOCA Load Flow With Offsite Power Available Page 66 of 130 Table 8.2.5 Start"1ng Requiremen ts for Se Iected 480V Loa ds Motor Vstart - Required Time to Vstart P55A 0.6708 1.675 P55B 0.6708 1.725 P55C runninQ runninQ P56A 1 0.8172@ MCC 2 1.820 P56B 1 0.8640@ MCC 1 3.274 MCC-1-X 1 0.8771 3.524 MCC-2-X 1 0.8956 3.641 (1) From Calculation EA-ELEC-VOLT-050 8.3 CASE A-1 C, STEADY STATE LOCA WITH 2400 V BUSES 1C AND 1D ON SG1-1 8.3.1 Scenario A1-1C, Adjusted Normal Load Flow (Pre-analysis system conditioning) The primary output of the A 1 scenario is the resulting tap setting of the SG 1-1 transformer. The resulting tap is 1.03125 with a voltage setpoint of the controlled bus (A 14-(SG)) of 0.97917. The resulting SG1-1 tap setting is determined using the methodology described in Section 7.6 .2. Other load flow information produced by this analysis is not used in any of the subsequent analyses. To determine the minimum pre-analysis voltage, the system voltage was lowered to achieve the desired/acceptable voltage on the 2400V system. The voltage was lowered to achieve approximately 2350V on the 2400V system by lowering the 345kV system voltage to 333 .750kV. See Attachment 200-1 C. 8.3.2 Scenario A2-1 C, ECCS and MOV Motor Starting, (Transient) Load Shed Complete In this scenario power is provided to the 2400V buses 1C and 10 by the SG1-1 transformer. The transformer's tap is fixed at the resulting tap from Scenario A 1, which is 1.03125. With the turbine trip, grid voltage drops 3% (of 333 .750 KV) to 323.738kV and load shedding has occurred . Motors that receive an SIS and CHP start signal are assumed to start. A summary of bus voltages for safety related buses , acceleration times for starting motors, and branch currents to the 2400V buses during Scenario A2-1C is provided below .

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LOCA Load Flow With Offsite Power Available Page 67 of 130 A2-1C Safety Related Bus Voltage Summary Bus Voltage Limiting Limiting Limiting Time To MCC MCC MCC SLUR Volts for Volts for Volts for Reset Contactor Load MOV 1 2 Bus Vbase Before During After (Sec) Pickup Operation Start2 Bus-1C 2400 0.9641 0.7713 0.9401 3.333 Bus-10 2400 0.9631 0.7730 0.9395 3.389 MCC-1 480 0.9684 0.7337 0.9375 0.8771 0.8754 0.8492 MCC-2 480 0.9711 0.7419 0.9410 0.8956 0.8733 0.8300 MCC-21 480 0.9629 0.7195 0.9333 0.8232 0.8670 0.7217 MCC-22 480 0.9561 0.6978 0.9244 0.8138 0.6741 0.6994 MCC-23 480 0.9635 0.7199 0.9339 0.8234 0.6769 0.7230 MCC-24 480 0.9559 0.6974 0.9242 0.8725 0.8353 0.7076 MCC-25 480 0.9722 0.7442 0.9425 0.8869 0.8703 (3) MCC-26 480 0.9735 0.7505 0.9446 0.8992 0.8694 (3) (1) From Calcu lation EA-ELEC-VOLT-050, Rev. 3 (2) From Calcu lation EA-ELEC-VOLT-051 , Rev. 1 (3) MOVs on MCC 25 and 26 do not receive an auto start signal associated with a OBA

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LOCA Load Flow With Offsite Power Available Page 68 of 130 A2-1 C Motor Voltage / Acceleration Time Summary Motor Terminal Voltage Min Req'd Accel. Motor Time Terminal Motor Vbase Before During After (Sec) Volts 2 1 P7A-(SW) 2400 0.9612 0.7705 0.9375 0.6708 P7B-(SW) 2400 0.9641 0.7648 0.9386 1.29 0.6708 1 P7C-(SW) 2400 0.9611 0.7705 0.9374 0.6708 1 P8A-(AF) 2400 0.9631 0.7700 0.9391 0.6708 P8C-(AF) 2400 off off off P52A-(CC) 2400 0.9641 0.7696 0.9397 0.67 0.6708 1 P52B-(CC) 2400 0.9627 0.7724 0.9390 0.6708 P52C-(CC) 2400 0.9641 0.7695 0.9397 0.67 0.6708 P54A-(CS) 2400 0.9631 0.7698 0.9388 3.20 0.6708 P54B-(CS) 2400 0.9641 0.7695 0.9398 3.10 0.6708 P54C-(CS) 2400 off off off P55A 480 0.9566 0.6659 0.9172 0.97 0.6708 1 P55B 480 0.9523 0.6923 0.9205 0.6708 P55C 480 0.9636 0.6710 0.9204 0.70 0.6708 P56A 480 0.9711 0.7268 0.9323 2.68 0.6708 P56B 480 0.9684 0.7205 0.9306 2.36 0.6708 P66A-(HPSI) 2400 0.9631 0.7705 0.9387 2.92 0.6708 P66B-(HPSI) 2400 0.9641 0.7693 0.9395 2.83 0.6708 P67A-(LPSI) 2400 0.9631 0.7701 0.9387 0.90 0.6708 P67B-(LPSI) 2400 0.9641 0.7670 0.9390 0.92 0.6708 (1) Motor Running , No Start (2) 70% for 2300V / 460V rated motors is 0.6708Vpu at 2400V / 480V. 90% for 2300V / 460V rated motors is 0.8625Vpu at 2300V I 480V A2-1C Branch Current Flow Summary Steady Steady Peak Peak State State From To Branch (PU) (Amps) PU) (Amps) SG1-1 Bus 1C A11-EX02-SUB1-2 0.1130 2718 0.036 866 SG1-1 Bus 10 A 12-A 14-SUB1-2 0.0740 1780 0.0358 861 lbase = Sbasef(Vbase X Sqrt 3) = 100 MVA/(2400V X 1.732) = 24,056.26 A= 1 pu Data from Append ix l-1C

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LOCA Load Flow With Offsite Power Available Page 69 of 130 A summary of bus voltage results and motor acceleration times for Scenario A2 is provided in Appendix A-1 C. Transient voltage plots and motor speed/current graphs are provided in Appendix 1-1 C. A print out of EDSA results is provided in Attachment 201-1 C . 8.3.2.1 Results Discussion for 2400V Buses and Motors During the ECCS motor starting voltage transient, limiting factors for 2400V buses 1C and 1D include voltage recovery to 0.9328 volts (pu) within 6.0 seconds to prevent transfer of the buses to Emergency Diesel Generators (EDGs) . Review of the 2400V bus voltages indicates that during the ECCS motor starts, Bus 1C voltage dips to 0.7713 pu and recovers to 0.9401 pu. Bus 1C voltage recovers to the SLUR reset voltage of 0.9328 pu in 3.333 seconds . Similarly, Bus 1D voltage dips to 0.7730 pu and recovers to 0.9395 pu. Bus 1D voltage recovers to the SLUR reset voltage in 3.389 seconds . SLUR reset is achieved . Bus 1C and 1D voltage remains well above the FLU R's actuation curve such that FLUR actuation is not a concern . Voltage recovers to greater than 0.7750 pu well within the time to prevent the actuation of the FLU Rs . Al l 2400 motors accelerate and achieve 98% of their rated speed within 4 seconds. The longest acceleration time for any of the 2400V motors was 3.20 seconds for the P54A Containment Spray pump. Voltages at the medium voltage (2400V) motor terminals are greater than 70 percent of rated voltage during start and recover to greater than 90 percent of rated . All 2400V motors start and accelerate to at least 0.98 pu speed . 8.3.2.2 Results Discussion for 480V Buses and Loads As discussed in section 7.5.2 static inrush loads are modeled for boric acid pumps P56A/B , MCC 1-MOVs, and MCC 2-MOVs until the voltage recovers to an acceptable level. Starting voltage requirement for these motors are given in Table 8.3.3.2 below. Timing to start motors is controlled by event manager scenario A2-Z-1C . Charging pumps P55A/C do not drop below min imum required voltage to start, both motors start at time = 0 seconds. P55B is running in this scenario. Table 8.3.3.2 St a rt*inQ Requiremen ts for Seec I ted 480V Loa d s Motor Vstart - Required Time to Vstart P56A 1 0.8172@ MCC 2 1.865 P56B 1 0.8640@ MCC 1 3.721 MCC-1-X 1 0.8771 3.912 MCC-2-X 1 0.8956 4 .069 (1) From Calculation EA-ELEC-VOLT-050 All 480 motors accelerate and achieve 98% of their rated speed within 3 seconds except as discussed in section 1.3.1. The longest acceleration time for any of the 480V motors was 2.68 seconds for the P-56A. Voltages at the 480V motor terminals and Motor Control

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LOCA Load Flow With Offsite Power Available Page 70 of 130 Centers recover to required minimum starting voltage as denoted in the table above and recover to greater than 90 percent of rated voltage after acceleration . MCCs 1, 2, 21-26 voltage recovers to 0.9242 per unit or above. Charging pumps recover to 0.9172 per unit or above. Boric acid pumps recover to 0.9306 per unit or above. 8.3.3 Scenario A4-1 C, ECCS Motors Running with Bus 1E Re-Energized Scenario A4 evaluates the steady state condition after the ECCS motors have started and are running . MOV operation is complete and Bus 1Eis re-energized . Loading on the ECCS pumps are set at bounding values (See Appendix D) to envelope any expected mode of operation. MCC loads are at LOCA values as identified in Appendix E. Containment Spray Pump P54C is running. System voltage remains the same at 323.738 kV to obtain 2350V at the 2400V buses. The SG1-1 tap changer is functional and has adjusted to control voltage to the previous pre-event voltage of 2350V. The resulting tap is 1.0875. There are two taps remaining on SG 1-1. A4-1C Safety Related Bus Voltage Summary Limiting Limiting A4 MCC MCC Limiting (SG1-1 LTC Time To Volts for Volts for MCC On) SLUR Reset Contactor Load Volts for Operation 2 MOV Start2 1 Bus Vbase Steady State (Sec) Pickup Bus-1C 2400 0.9771 No Drop Out Bus-1D 2400 0.9767 No Drop Out MCC-1 480 0.9771 0.8771 0.8754 0.8492 MCC-2 480 0.9792 0.8956 0.8733 0.8300 MCC-21 480 0.9729 0.8232 0.8670 0.7217 MCC-22 480 0.9667 0.8138 0.6741 0.6994 MCC-23 480 0.9750 0.8234 0.6769 0.7230 MCC-24 480 0.9667 0.8725 0.8353 0.7076 MCC-25 480 0.9813 0.8869 0.8703 0.7143 MCC-26 480 0.9813 0.8992 0.8694 0.7213 (1) From Calculation EA-ELEC-VOLT-050 (2) From Calculation EA-ELEC-VOLT-051

PALISADES NUCLEAR PLANT - ENGINEERING ANALYSIS CONTINUATION SHEET Cale. No.: EA-ELEC-EDSA-03 Revision 2 Cale.

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LOCA Load Flow With Offsite Power Available Page 71 of 130 Transformer Loading - Case A4-1C Capacity Scenario A4 (LTC On) Transformer (KVA) Loading (KVA) Loading% SG1-1 10500 8919 74 SU1-2 10600 0 0 SP-11 750 393.4 52 SP-12 750 510.1 68 SP-13 750 (1) 363 .7(87.5) 48 SP-14 750 539.2 I 72 SP-15 750 0 0 SP-16 750 488.6 65 SP-19 750 434.6 58 SP-20 750 370.0 49 SP-200 750 245.0 33 (1) 150A (High side) load limit per SOP-30 Branch Current Flow - Case A4-1C ScenarioA4 From Bus To Bus Branch Code (L TC On) (Amps) SG-1-1-LS 152-401-LS (Bus A14 (SG)) A14-X07 2055 SP-1-2-LS-TBOX 152-105-LS (Bus 1C) A 11-EX02-SUB1-2 910 BUS-A14-(SG) 152-203-LS (Bus 1D) A 12-A14-SUB1-2 822 BUS-A14-(SG) 152-302-LS (Bus 1E) A 13-A 14-SUB1 -2 324 A summary of bus voltage results for Scenario A4-1 C is provided in Appendix A-1 C and 03-1 C. A print out of EDSA results for transformer loading, and branch current flows are provided in Attachment 203-1 Ca . Voltages on 2400V buses 1C and 1Dare greater than 0.97 pu and do not challenge the second level undervoltage relays Voltages on all of the safety related buses are 0.9667 pu or above and adequate for operation of all loads. Review of Appendix A-1 C and 03-1 Ca (page 65-Bus Flow) data indicated that all relevant running motors have terminal voltages in excess of 90 percent, or 0.8625 pu at 480V base . The few motors that have terminal voltages less than rated are P203B, VCT 30A-xx and VCT 30B-xx are cooling tower loads that would be tripped and are not relevant to this case.

PALISADES NUCLEAR PLANT - ENGINEERING ANALYSIS CONTINUATION SHEET Cale. No.: EA-ELEC-EDSA-03 Revision 2 Cale.

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LOCA Load Flow With Offsite Power Available Page 72 of 130 Steady state transformer loading is within the rating of all transformers . Again it is noted that loading for this analysis is conservatively heavy to produce conservative voltages. Additional analysis specific to transformer loading may be warranted . The resulting current flows are high and exceed the emergency (LOCA) condition continuous ratings specified in SOP-30 , Section 4.3. The feeder to 2400V Bus 1C is supplying 910A and exceeds the SOP-30 LOCA rating (795A) by 14%. The feeder to 2400V Bus 1 D is supplying 822A and exceeds the SOP-30 LOCA rating (81 OA) by 1%. It should be noted that in an effort to achieve a bounding analysis, system load is inflated and the resulting current flow is not necessarily representative of expected actual current flow . However, operator action to reduce the unnecessary load would be required if necessary as is already incorporated into the SOP (Section 4.3 .d). Further, the higher loads are a short term affect. The impact of the higher currents is an elevated temperature which may result in a reduction of cable life. SOP-030 already includes load monitoring requirements to address the cable loading issue. 8.3.4 Scenario A4.1-1 C, ECCS Motors Running, Bus 1 E Energized, LTC Off Scenario A4 .1 evaluates the condition after the ECCS motors have started and are running . MOV operation is complete , then Bus 1E is re-energized simultaneously with Containment Spray Pump P54C start. Loading on the ECCS pumps are set at bounding values (See Append ix D) to envelope any expected mode of operation. MCC loads are at LOCA values as identified in Appendix E. The SG 1-1 transformer auto-tap changer has operated and adjusted voltage to the pre-event 2400V bus voltage of 2350V. Then Bus 1 E is re-energized and Conta inment Spray Pump P54C starts simultaneously. The pre-event loadflow is run with the grid voltage at 97% of 334kV (333.750kV) = (323.738kV), P54C is off and Bus 1 Eis not energ ized. The SG 1-1 tap changer solves to 1.075. (If Bus 1 E is re-energized prior to the 2400V buses recovering to 2350V, the second level undervoltage relay reset will not be satisfied and offsite power will be lost.) This resu lts in a voltage of 2348V at Bus 1 D and 2350V at Bus 1C. These are the only values relevant to this scenario as it sets up the next step of re-energizing Bus 1E and starting P54C. The pre-event (set-up) voltage results and transformer tap are provided in 03-1Cb . The motor starting case using the Paladin Advanced Motor Starting routine and Transient Stability locks the SG 1-1 tap at 1.075, re-energizes Bus 1E (close breaker 152-302), and starts P54C. The grid remains at 323.738kV. The transient stability is controlled by event manager A4 .1/B4.1 with Bus 1 E energizing (152-302-closing) and P54C starting at 1.0 seconds. A summary of bus voltage results for Scenario A4 .1-1C is provided in Appendix A-1C . A print out of EDSA motor starting results for this scenario is provided in Attachment 203-1Cc. Plots are provided in Appendix N-1 C.

PALISADES NUCLEAR PLANT - ENGINEERING ANALYSIS CONTINUATION SHEET Cale. No.: EA-ELEC-EDSA-03 Revision 2 Cale.

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LOCA Load Flow With Offsite Power Available Page 73 of 130 A final load flow is not run since the transformer loading and branch current flows would be similar to those values provided in scenario A4-1C. The only difference is the tap on SG 1-

1. The branch currents are expected to be slightly larger in this scenario due to the effect of lower voltage on constant power loads.

PALISADES NUCLEAR PLANT - ENGINEERING ANALYSIS CONTINUATION SHEET Cale. No.: EA-ELEC-EDSA-03 Revision 2 Cale.

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LOCA Load Flow With Offsite Power Available Page 74 of 130 A4.1-1 C Safety Related Bus Voltage Summary Time Limiting A4.1 Motor Start To MCC Limiting (SU1-2 LTC Off) SLUR Volts for Volts for Limiting Reset Contactor Load Volts for Start2 *3 1 Ops2,3 Bus Vbase Before During After (Sec) Pickup Bus-1C 2400 0.9676 0.9424 0.9656 n/a Bus-10 2400 0.9670 0.9436 0.9651 n/a MCC-1 480 0.9673 0.9411 0.9652 0.8771 0.8754 0.8492 MCC-2 480 0.9702 0.9459 0.9683 0.8956 0.8733 0.8300 MCC-21 480 0.9640 0.9376 0.9619 0.8232 0.8670 0.7217 MCC-22 480 0.9558 0.9310 0.9538 0.8138 0.6741 0.6994 MCC-23 480 0.9647 0.9382 0.9625 0.8234 0.6769 0.7230 MCC-24 480 0.9556 0.9308 0.9536 0.8725 0.8353 0.7076 MCC-25 480 0.9710 0.9448 0.9688 0.8869 0.8703 0.7143 MCC-26 480 0.9716 0.9473 0.9697 0.8992 0.8694 0.7213 P7A-(SW) 0.9650 0.9416 0.9631 0.8625 0.6708 P7B-(SW) 0.9660 0.9408 0.9639 0.8625 0.6708 P7C-(SW) 0.9650 0.9415 0.9631 0.8625 0.6708 P8A-(AF) 0.9666 0.9414 0.9646 0.8625 0.6708 P8C-(AF) off off off P52A-(CC) 0.9672 0.9420 0.9652 0.8625 0.6708 P52B-(CC) 0.9665 0.9431 0.9647 0.8625 0.6708 P52C-(CC) 0.9671 0.9420 0.9651 0.8625 0.6708 P54A-(CS) 0.9663 0.9428 0.9644 0.8625 0.6708 P54B-(CS) 0.9673 0.9421 0.9652 0.8625 0.6708 P54C-(CS) 0.9676 0.9404 0.9652 0.8625 0.6708 P55A 0.9522 0.9273 0.9502 0.8625 0.6708 P55B 0.9521 0.9271 0.9500 0.8625 0.6708 P55C 0.9609 0.9343 0.9588 0.8625 0.6708 P56A 0.9650 0.9405 0.9630 0.8625 0.6708 P56B 0.9630 0.9366 0.9608 0.8625 0.6708 P66A-(HPSI) 0.9661 0.9427 0.9642 0.8625 0.6708

                                                                              - - - - - - -- ~ - -

PALISADES NUCLEAR PLANT - ENGINEERING ANALYSIS CONTINUATION SHEET Cale. No.: EA-ELEC-EDSA-03 Revision 2 Cale.

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LOCA Load Flow With Offsite Power Available Page 75 of 130 A4.1-1 C Safety Related Bus Voltage Summary Time Limiting A4 .1 Motor Start To MCC Limiting (SU1-2 LTC Off) SLUR Volts for Volts for Limiting Reset Contactor Load Volts for 1 Ops2,3 23 Bus Vbase Before During After (Sec) Pickup Start

P66B-(HPSI) 0.9670 0.9418 0.9650 0.8625 0.6708 P67A-(LPSI) 0.9662 0.9428 0.9644 0.8625 0.6708 P67B-(LPSI) 0.9664 0.9412 0.9644 0.8625 0.6708 V1A 0.9453 0.9201 0.9432 0.8625 0.6708 V2A 0.9458 0.9206 0.9437 0.8625 0.6708 V3A 0.9563 0.9315 0.9543 0.8625 0.6708 V4A 0.9483 0.9213 0.9460 0.8625 0.6708 (1) From Calculation EA-ELEC-VOLT-050 (2) From Calculation EA-ELEC-VOL T-051 for MCCs.

(3) 70% for 2300V and 460V rated motors is 0.6708V pu at 2400V or 480V base, 90% for 2300V and 460V rated motors is 0.8625V pu at 2400V or 480V base Voltage on 2400V buses 1C and 1D do not dip below the SLUR drop out point of 0.9280 per unit. During the P54C motor start all bus voltages remain above 0.90 pu and all motor terminal voltages remain above 90% of rated (.8625V pu at 480V base) except for some cooling tower loads that are not relevant to this scenario. Per Appendix 0-1 C, the transient stability shows pump motor P54C starts and accelerates to within 0.98 percent of rated speed in 2.239 seconds . Transformer loading and current flows are similar to scenario A4-1 C for the time frame in which the transformer tap is responding to this changing environment. Once the transformer tap adjusts to the steady state condition , it is the same as scenario A4-1 C and the transformer loading and current flows are exactly the same.

PALISADES NUCLEAR PLANT - ENGINEERING ANALYSIS CONTINUATION SHEET Cale. No.: EA-ELEC-EDSA-03 Revision 2 Cale.

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LOCA Load Flow With Offsite Power Available Page 76 of 130 8.4 CASE B-1C, STEADY STATE LOCA WITH 2400 V BUSES 1C AND 1D ON SU1-2 8.4.1 Scenario 81-1 C, Adjusted Normal Load Flow (Pre-analysis system conditioning) The primary output of the B 1 scenario is the resulting tap setting of the SU 1-2 transformer. The resulting tap is 1.0375 with a voltage setpoint of the controlled bus (SU-1-2-LS) of 0.97917. The resulting SU1-2 tap setting is determined using the methodology described in Section 7.6.2 . Other load flow information produced by this analysis is not used in any of the subsequent analyses. To determine the minimum pre-analysis voltage, the system voltage was lowered to achieve the desired/acceptable voltage on the 2400V system . The voltage was lowered to achieve approximately 2350V on the 2400V system by lowering the 345kV system voltage to 333.5kV. See Attachment 300-1 C. 8.4.2 Scenario B2-1C, ECCS and MOV Motor Starting, (Transient) Load Shed Complete In this scenario power is provided to the 2400V buses 1C and 1D by the SU1-2 transformer. The transformer's tap is fixed at the resulting tap from Scenario B1, which is 1.0375. With the turbine trip, grid voltage drops 3% (of 333.5 KV) to 323.495kV and load shedding has occurred . Motors that receive an SIS and CHP start signal are assumed to start. A summary of bus voltages for safety related buses , acceleration times for starting motors, and branch currents to the 2400V buses during Scenario B2-1 C is provided below.

PALISADES NUCLEAR PLANT- ENGINEERING ANALYSIS CONTINUATION SHEET Cale. No.: EA-ELEC-EDSA-03 Revision 2 Cale.

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LOCA Load Flow With Offsite Power Available Page 77 of 130 82-1 C Safety Related Bus Voltage Summary Bus Voltage Limiting Limiting Limiting Time To MCC MCC MCC SLUR Volts for Volts for Volts for Reset Contactor Load MOV 1 2 2 Bus Vbase Before During After (Sec) Pickup Operation Start Bus-1C 2400 0.9659 0.7408 0.9380 4.597 Bus-10 2400 0.9649 0.7439 0.9378 4.659 MCC-1 480 0.9704 0.7031 0.9353 0.8771 0.8754 0.8492 MCC-2 480 0.9729 0.7129 0.9393 0.8956 0.8733 0.8300 MCC-21 480 0.9648 0.6884 0.9311 0.8232 0.8670 0.7217 MCC-22 480 0.9579 0.6685 0.9227 0.8138 0.6741 0.6994 MCC-23 480 0.9655 0.6888 0.9317 0.8234 0.6769 0.7230 MCC-24 480 0.9578 0.6681 0.9225 0.8725 0.8353 0.7076 MCC-25 480 0.9741 0.7133 0.9403 0.8869 0.8703 (3) MCC-26 480 0.9753 0.7213 0.9429 0.8992 0.8694 (3) (1) From Calculation EA-ELEC-VOLT-050, Rev. 3 (2) From Calculation EA-ELEC-VOLT-051 , Rev. 1 (3) MOVs on MCC 25 and 26 do not receive an auto start signal associated with a OBA

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LOCA Load Flow With Offsite Power Available Page 78 of 130 82-1 C Motor Voltage/ Acceleration Time Summary Motor Terminal Voltage Min Req'd Accel. Motor Time Terminal 2 Motor Vbase Before During After (Sec) Volts 1 P7A-(SW) 2400 0.9629 0.7414 0.9358 0.6708 P7B-(SW) 2400 0.9659 0.7345 0.9365 1.42 0.6708 1 P7C-(SW} 2400 0.9629 0.7414 0.9357 0.6708 1 P8A-(AF) 2400 0.9649 0.7394 0.9370 0.6708 P8C-(AF) 2400 off off off P52A-(CC) 2400 0.9659 0.7391 0.9376 0.74 0.6708 1 P52B-(CC) 2400 0.9644 0.7434 0.9373 0.6708 P52C-(CC) 2400 0.9659 0.7390 0.9375 0.74 0.6708 P54A-(CS) 2400 0.9649 0.7409 0.9372 3.39 0.6708 P54B-(CS) 2400 0.9659 0.7391 0.9376 3.28 0.6708 P54C-(CS) 2400 off off off P55A 480 0.9584 0.6379 0.9155 0.91 0.6708 1 P55B 480 0.9542 0.6627 0.9187 0.6708 P55C 480 0.9656 0.6420 0.9182 0.66 0.6708 P56A 480 0.9729 0.6977 0.9306 2.69 0.6708 P56B 480 0.9704 0.6904 0.9285 2.38 0.6708 P66A-(HPSI) 2400 0.9649 0.7416 0.9370 3.08 0.6708 P66B-(HPSI) 2400 0.9659 0.7388 0.9374 3.00 0.6708 P67 A-(LPSI) 2400 0.9649 0.7412 0.9370 0.98 0.6708 P67B-(LPSI) 2400 0.9659 0.7366 0.9369 1.01 0.6708 (1) Motor Running , No Start (2) 70% for 2300V / 460V rated motors is 0.6708Vpu at 2400V I 480V. 90% for 2300V / 460V rated motors is 0.8625Vpu at 2300V / 480V B2-1 C Branch Current Flow Summary Steady Steady Peak Peak State State From To Branch (PU) (Amps) PU) (Amps) SU1-2 Bus 1C A11-X04-SUB1-2 0.1101 2649 0.0363 873 SU1-2 Bus 10 A12-X04-SUB1-2 0.0740 1780 0.0358 861 lbase = Sbasef(Vbase X Sqrt 3) = 100 MVA/(2400V X 1.732) =24,056.26 A= 1 pu Data from Appendix K-1C

PALISADES NUCLEAR PLANT - ENGINEERING ANALYSIS CONTINUATION SHEET Cale. No.: EA-ELEC-EDSA-03 Revision 2 Cale.

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LOCA Load Flow With Offsite Power Available Page 79 of 130 A summary of bus voltage results and motor acceleration times for Scenario B2 is provided in Appendix B-1 C. Transient voltage plots and motor speed/current graphs are provided in Appendix K-1C. A print out of EDSA results is provided in Attachment 301-1C. 8.4.2.1 Results Discussion for 2400V Buses and Motors During the ECCS motor starting voltage transient, limiting factors for 2400V buses 1C and 1D include voltage recovery to 0.9328 volts (pu) within 6.0 seconds to prevent transfer of the buses to Emergency Diesel Generators (EDGs) . Review of the 2400V bus voltages indicates that during the ECCS motor starts, Bus 1C voltage dips to 0. 7408 pu and recovers to 0.9380 pu. Bus 1C voltage recovers to the SLUR reset voltage of 0.9328 pu in 4.597 seconds . Similarly, Bus 1D voltage dips to 0.7439 pu and recovers to 0.9378 pu . Bus 1D voltage recovers to the SLUR reset voltage in 4.659 seconds . SLUR reset is achieved . Bus 1C and 1 D voltage remains well above the FLU R's actuation curve such that FLUR actuation is not a concern. Voltage recovers to greater than 0.7750 pu well within the time to prevent the actuation of the FLU Rs. All 2400 motors accelerate and achieve 98% of their rated speed within 4 seconds . The longest acceleration time for any of the 2400V motors was 3.39 seconds for the P54A Containment Spray pump. Voltages at the medium voltage (2400V) motor terminals are greater than 70 percent of rated voltage during start and recover to greater than 90 percent of rated. All 2400V motors start and accelerate to at least 0.98 pu speed. 8.4.2.2 Results Discussion for 480V Buses and Loads As discussed in section 7.5.2 static inrush loads are modeled for charging pumps P55A/B/C, boric acid pumps P56A/B, MCC 1-MOVs, and MCC 2-MOVs until the voltage recovers to an acceptable level. Starting voltage requirement for these motors are given in Table 8.4.2.2 below. Timing to start motors is controlled by event manager scenario B2-Z-1C. Table 8.4 .2.2 Starting Requirements for Selected 480V Loads Motor Vstart - Required Time to Vstart P55A 0.6708 1.595 P55B running Running I P55C 1 0.6708 1.560 I P56A 0.8172@ MCC 2 2.280 P56B 1 0.8640 (@, MCC 1 3.984 I MCC-1-X 1 0.8771 4.168 I MCC-2-X 1 0.8956 4.30 I (1) From Calculation EA-ELEC-VOLT-050

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LOCA Load Flow With Offsite Power Available Page 80 of 130 All 480 motors accelerate and achieve 98% of their rated speed within 3 seconds except as discussed in section 1.3.1. The longest acceleration time for any of the 480V motors was 2.69 seconds for the P-56A. Voltages at the 480V motor terminals and Motor Control Centers recover to required minimum starting voltage as denoted in the table above and recover to greater than 90 percent of rated voltage after acceleration . MC Cs 1, 2, 21-26 voltage recovers to 0.9225 per unit or above. Charging pumps recover to 0.9155 per unit or above. Boric acid pumps recover to 0.9285 per unit or above. 8.4.3 Scenario 84-1 C, ECCS Motors Running with Bus 1E Re-Energized Scenario B4 evaluates the steady state condition after the ECCS motors have started and are running . MOV operation is complete and Bus 1Eis re-energized . Loading on the ECCS pumps are set at bounding values (See Appendix D) to envelope any expected mode of operation . MCC loads are at LOCA values as identified in Appendix E. Containment Spray Pump P54C is running. System voltage remains the same at 323.495 kV to obtain 2350V at the 2400V buses. The SU1-2 tap changer is functional and has adjusted to control voltage to the previous pre-event voltage of 2350V. The resulting tap is 1.10. This is the last tap on SU 1-2. 84-1 C Safety Related Bus Voltage Summary Limiting Limiting 84 MCC MCC Limiting (SU1-2 LTC Time To Volts fer Volts for MCC On) SLUR Reset Contactor Load Volts for 1 2 Bus Vbase Steady State (Sec) Pickup Operation MOV Start2 Bus-1C 2400 0.9750 No Drop Out Bus-1D 2400 0.9754 No Drop Out MCC-1 480 0.9750 0.8771 0.8754 0.8492 MCC-2 480 0.9792 0.8956 0.8733 0.8300 MCC-21 480 0.9729 0.8232 0.8670 0.7217 MCC-22 480 0.9646 0.8138 0.6741 0.6994 MCC-23 480 0.9729 0.8234 0.6769 0.7230 MCC-24 480 0.9646 0.8725 0.8353 0.7076 MCC-25 480 0.9792 0.8869 0.8703 0.7143 MCC-26 480 0.9813 0.8992 0.8694 0.7213 (1) From Calculation EA-ELEC-VOLT-050 (2) From Calculation EA-ELEC-VOLT-051

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LOCA Load Flow With Offsite Power Available Page 81 of 130 Transformer Loading - Case 84-1 C Capacity Scenario 84 (L TC On) Transformer (KVA) Loading (KVA) Loading% SG1-1 10500 0 0 SU1-2 10600 9023.0 70 SP-11 750 393.3 52 SP-12 750 510.0 68 SP-13 750 (1) 363 .3(87.4) 48 SP-14 750 539 .3 72 SP-15 750 0 0 SP-16 750 487.3 65 SP-19 750 434.1 58 SP-20 750 369.6 49 SP-200 750 245.0 33 (1) 150A (H igh side) load limit per SOP-30 Branch Current Flow - Case B4-1C Scenario 84 From Bus To Bus Branch Code (L TC On) (Amps) SU-1-2-LS 152-106-LS (Bus 1C) A11-X04-SUB1-2 911 SU-1-2-LS 152-202-LS (Bus 1D) A 12-X04-SUB 1-2 823 SU-1-2-LS 152-303-LS (Bus 1E) A 13-X04-SUB 1-2 324 A summary of bus voltage results for Scenario B4-1 C is provided in Appendix B-1 C and 03-1 C. A print out of EDSA results for transformer loading , and branch current flows are provided in Attachment 303-1Ca. Voltages on 2400V buses 1C and 1D are greater than 0.97 pu and do not challenge the second level undervoltage relays Voltages on all of the safety related buses are 0.9646 pu or above and adequate for operation of all loads. Review of Appendix B-1 C and 03-1 Ca (page 72-Bus Flow) data indicated that all relevant running motors have terminal voltages in excess of 90 percent, or 0.8625 pu at 480V base . The few motors that have terminal voltages less than rated are P203B , VCT 30A-xx and VCT 30B-xx are cooling tower loads that would be tripped and are not relevant to this case .

PALISADES NUCLEAR PLANT - ENGINEERING ANALYSIS CONTINUATION SHEET Cale. No.: EA-ELEC-EDSA-03 Revis ion 2 Cale.

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LOCA Load Flow With Offsite Power Available Page 82 of 130 Steady state transformer loading is within the rating of all transformers . Again it is noted that loading for this analysis is conservatively heavy to produce conservative voltages. Additional analysis specific to transformer loading may be warranted. The resulting current flows are high and exceed the emergency (LOCA) condition continuous ratings specified in SOP-30, Section 4.3. The feeder to 2400V Bus 1C is supplying 911A and exceeds the SOP-30 LOCA rating (795A) by 15%. The feeder to 2400V Bus 1Dis supplying 823A and exceeds the SOP-30 LOCA rating (810A) by 2% . It should be noted that in an effort to achieve a bounding analysis , system load is inflated and the resulting current flow is not necessarily representative of expected actual current flow . However, operator action to reduce the unnecessary load would be required if necessary as is already incorporated into the SOP (Section 4.3 .d) . Further, the higher loads are a short term affect. The impact of the higher currents is an elevated temperature which may result in a reduction of cable life. SOP-030 already includes load monitoring requirements to address the cable loading issue. 8.4.4 Scenario 84.1-1 C, ECCS Motors Running, Bus 1E Energized, LTC Off Scenario B4.1 evaluates the condition after the ECCS motors have started and are running. MOV operation is complete then Bus 1E is re-energized and Containment Spray Pump P54C is starting. Loading on the ECCS pumps are set at bounding values (See Appendix D) to envelope any expected mode of operation . MCC loads are at LOCA values as identified in Appendix E. The SU 1-2 transformer auto-tap changer has operated and adjusted voltage to the pre-event 2400V bus voltage of 2350V. Then Bus 1E is re-energized and Containment Spray Pump P54C starts simultaneously. The pre-event loadflow is run with the grid voltage at 97% of 334kV (333 .5kV) = (323.495kV), P54C is off and Bus 1Eis not energized. The SU 1-2 tap changer solves to 1.0875. (If Bus 1E is re-energized prior to the 2400V buses recovering to 2350V, the second level undervoltage relay reset will not be satisfied and offsite power will be lost.) This results in a voltage of 2349V at Bus 1D and 2350V at Bus 1C. The grid voltage was lowered from 323.495kV to 323.0kV to obtain approximately 2350V on Buses 1C and 1D. These are the only values relevant to this scenario as it sets up the next step of re-energizing Bus 1E and starting P54C . The pre-event (set-up) voltage results and transformer tap are provided in Attachment 303-1 Cb. The motor starting case using the Paladin Advanced Motor Starting routine and Transient Stability locks the SU 1-2 tap at 1.0875, re-energizes Bus 1E (close breaker 152-303), and starts P54C. The grid remains at 323.495kV (323.0kV). The transient stability is controlled by event manager A4 .1/B4 .1 with Bus 1E energizing and P54C starting at 1.0 seconds. A summary of bus voltage results for Scenario B4.1-1 C is provided in Appendix B-1 C. A print out of EDSA motor starting results for this scenario is provided in Attachment 303-1Cc. Plots are provided in Appendix 0-1C.

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LOCA Load Flow With Offsite Power Available Page 83 of 130 A final load flow is not run since the transformer loading and branch current flows would be similar to those values provided in scenario B4-1C . The only difference is the tap on SU 1-

2. The branch currents are expected to be slightly larger in this scenario due to the effect of lower voltage on constant power loads.

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LOCA Load Flow With Offsite Power Available Page 84 of 130 84.1-1 C Safety Related Bus Voltage Summary Time Limiting 84.1 Motor Start To MCC Limiting (SU1-2 LTC Off) SLUR Volts for Volts for Limiting Reset Contactor Load Volts for Start 2*3 1 Ops2,3 Bus Vbase Before During After (Sec) Pickup Bus-1C 2400 0.9652 0.9337 0.9626 n/a Bus-1D 2400 0.9650 0.9358 0.9627 n/a MCC-1 480 0.9647 0.9320 0.9621 0.8771 0.8754 0.8492 MCC-2 480 0.9682 0.9378 0.9658 0.8956 0.8733 0.8300 MCC-21 480 0.9615 0.9284 0.9588 0.8232 0.8670 0.7217 MCC-22 480 0.9537 0.9227 0.9513 0.8138 0.6741 0.6994 MCC-23 480 0.9621 0.9290 0.9594 0.8234 0.6769 0.7230 MCC-24 480 0.9535 0.9225 0.9511 0.8725 0.8353 0.7076 MCC-25 480 0.9684 0.9357 0.9658 0.8869 0.8703 0.7143 MCC-26 480 0.9695 0.9392 0.9672 0.8992 0.8694 0.7213 P7A-(SW) 0.9630 0.9337 0.9608 0.8625 0.6708 P78-(SW) 0.9635 0.9320 0.9610 0.8625 0.6708 P7C-(SW) 0.9630 0.9337 0.9607 0.8625 0.6708 P8A-(AF) 0.9642 0.9327 0.9616 0.8625 0.6708 P8C-(AF) off off off P52A-(CC) 0.9647 0.9333 0.9622 0.8625 0.6708 P528-(CC) 0.9645 0.9353 0.9623 0.8625 0.6708 P52C-(CC) 0.9647 0.9332 0.9621 0.8625 0.6708 P54A-(CS) 0.9643 0.9350 0.9620 0.8625 0.6708 P548-(CS) 0.9648 0.9333 0.9623 0.8625 0.6708 P54C-(CS) 0.9652 0.9317 0.9623 0.8625 0.6708 P55A 0.9501 0.9189 0.9477 0.8625 0.6708 P558 0.9499 0.9187 0.9475 0.8625 0.6708 P55C 0.9583 0.9251 0.9556 0.8625 0.6708 P56A 0.9629 0.9324 0.9605 0.8625 0.6708 P568 0.9604 0.9275 0.9577 0.8625 0.6708 P66A-(HPSI) 0.9641 0.9349 0.9619 0.8625 0.6708

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LOCA Load Flow With Offsite Power Available Page 85 of 130 84.1-1 C Safety Related Bus Voltage Summary Time Limiting 84.1 Motor Start To MCC Limiting (SU1-2 LTC Off) SLUR Volts for Volts for Limiting Reset Contactor Load Volts for 1 Ops2,3 23 Bus Vbase Before During After (Sec) Pickup Start

P66B-(HPSI) 0.9645 0.9331 0.9620 0.8625 0.6708 P67A-(LPSI ) 0.9642 0.9350 0.9620 0.8625 0.6708 P67B-(LPSI) 0.9639 0.9325 0.96 14 0.8625 0.6708 V1A 0.9432 0.9117 0.9407 0.8625 0.6708 V2A 0.9436 0.9122 0.9412 0.8625 0.6708 V3A off off off 0.8625 0.6708 V4A 0.9456 0.9119 0.9429 0.8625 0.6708 (1) From Calcu lation EA-ELEC-VOLT-050 (2) From Calculation EA-ELEC-VO LT-051 for MCCs.

(3) 70% for 2300V and 460V rated motors is 0.6708V pu at 2400V or 480V base, 90% for 2300V and 460V rated motors is 0.8625V pu at 2400V or 480V base Voltage on 2400V buses 1C and 1D do not dip below the SLUR drop out point of 0.9280 per unit. During the P54C motor start all bus voltages remain above 0.90 pu and all motor terminal voltages remain above 90% of rated (.8625V pu at 480V base) except for some cooling tower loads that are not relevant to this scenario. Per Appendix 0 -1C, the transient stability shows pump motor P54C starts and accelerates to within 0.98 percent of rated speed in 2.287 seconds . Transforme r loading and current flows are similar to scenario B4-1 C for the time frame in which the transformer tap is responding to th is changing environment. Once the transformer tap adjusts to the steady state condition , it is the same as scenario B4 .1-1 C and the transformer loading and current flows are exactly the same. 8.4.5 Scenario 82.1-1 C, ECCS Motor Start, Delayed P54A/B Start Concurrent w/ SLUR Reset This scenario evaluates the unique condition of starting Containment Spray Pumps P54A and P54B just as 2400V bus 1C and 1D voltage is recovering and the SLURs are about to reset. The concern is a delay in SLUR reset due to the two motors starting such that the SLUR time delay expires and the safety related buses are transferred to the emergency diesel generators. Containment Spray pumps receives start signals from the CHP logic

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LOCA Load Flow With Offsite Power Available Page 86 of 130 whose actuation is variable with respect to time and is dependent on the LOCA and other factors . This event occurs just after the ECCS motors start in response to the SIS while those motors are accelerating and voltage is recovering. To achieve the most conservative results with respect to voltage and SLUR reset this scenario starts the two Containment Spray Pumps just prior to either 2400V bus voltage reaching 0.9328V pu. This was determined through multiple runs of the EDSA software similar to the B2 scenario , the SU1-2 transformer tap remains set at the pre-event position of 1.0375 and grid voltage is 323.495 KV. This scenario addresses the concerns of Condition Report AR01018366 . Since the primary concern of this scenario is achieving SLUR reset and not to evaluate the entire distribution system only sufficient data is gathered to demonstrate reset. To implement the simulation , all Scenario B2-TS-1 C loads except P54A, B, and Care simulated starting and the time to reset determined to be 2.710 seconds. Also, starting initiation times for selected 480V motors are shown in Table 8.1 .14. (No plots are provided for determining these values) . These values (plus the 1 second simulation start delay) are input to the event manager B2.1-Z-1 C for the starting time for the P54A and B pumps. The result of the simulation with all Scenario B2-1 C loads starting - with P54A and B being delayed - are provided in Appendix M-1 Ca-SU for the bus voltage profile and P54A and P54B motor speed/current graphs. From Appendix M-1 Ca-SU , Bus 1C voltage dips to a minimum of 0.777 pu and Bus 1D voltage dips to a minimum of 0.781 pu during the ECCS block start of all motors except P54A, B and C. Voltage recovers to 0.932 pu on Bus 1C at 2.707 seconds and 0.932 pu on Bus 1D at 2.705 seconds after the ECCS motor start. It is noted that a later start in the event manager would result in exceeding the SLUR reset prior to starting the CS pumps. It is noted that the specified time intervals are approaching the EDSA software integration time step limitations , therefore some slight variations in time values are introduced. At this time, 2.710 seconds after ECCS motor start, both Containment Spray pumps P54A and B are started and voltage dips to approximately 0.89 pu on both 2400V buses and 0.88 pu at both Containment Spray pump motor terminals. Ultimately voltage on Bus 1C recovers to 0.933 (SLUR Reset) after 5.582 seconds total elapsed time . Voltage on Bus 1D recovers to 0.933 (SLUR Reset) after 5.603 seconds total elapsed time. Based on these results it is concluded that the second level undervoltage relays achieve reset prior to expiration of the 6.0 second time delay and subsequent transfer of the 2400V buses to the EDGs. It is noted that the minimum voltage at the Containment Spray pump motor terminals is 0.884V pu which is sufficient to ensure motor start and acceleration to rated speed. Pump motors P54A and P54B achieve rated speed in approximately 2.6 seconds (6.293 - 3.710 = 2.583).

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LOCA Load Flow With Offsite Power Available Page 87 of 130 TABLE 8.4.5 Motor Vstart - Required Time to Vstart I P55A 0.6708 1.0 I P55B running running I P55C 0.6708 1.0 I P56A1 0.8172@ MCC 2 1.762 I P56B 1 0.8640 @ MCC 1 3.277 I MCC-1-X 1 0.8771 3.515 MCC-2-X 1 0.8956 3.618 I 8.5 SPECIAL SENSITIVITY/ SPLIT BUS CASE STUDIES Below are six special case studies that represent the bounding cases for off normal configurations with respect to bus loading and particularly SLUR reset. The diagrams below identify the distribution of buses between either SG-1-1 or SU-1-2 . Note that SP-1-2 transformer supplied with a subsequent LOCA is not within the design basis and therefore is not considered .

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LOCA Load Flow With Offsite Power Available Page 88 of 130 NORMAL CONFIGURATION

           ~                                                ~ [}ill
                   ~

I iiiL iiL I iiiL iiL SPLIT BUS CONFIGURATION Case SG-lC Case SG-10 Case SU-lC Case SU-10 h ~ r h ~ r case SG-1c10 Case SU-lClD There are three identifiable worst case scenarios for the split bus configuration using the figures above and they are dependent on the transformer connection;

1) Bus 1C isolated

2) Bus 1D isolated

3) Buses 1C & 1D together; Bus 1E isolated

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LOCA Load Flow With Offsite Power Available Page 89 of 130 Tables A2-1 C and 82-1 C are compared to determine the worst case voltage for Bus 1C. Bus 1C starting voltage dip (during; 0.7713/0.7408 pu) and post-start voltage (after; 0.9401/0.9380 pu) is lower when fed via SU 1-2 or the "B" scenario. Therefore, Case SU-1C is bounding and Case SG-1 C is not evaluated. Tables A2-1 D and 82-1 Dare compared to determine the worst case voltage for Bus 1D. Bus 1D starting voltage dip (during; 0.7698/0.7454 pu) and post-start voltage (after; 0.9391/ 0.9380 pu) is lower when fed via SU 1-2 or the "B" scenario. Therefore , Case SU-1 Dis bounding and Case SG-1 C is not evaluated . Note, the worst case Bus 1D recovery voltage is 0.9378 pu , per Table 82-1 C. The same logic in voltage results apply when two Class 1E buses are connected to a single transformer. The "B" scenario or SU-1 -2 feed (Case SU-1 C1 D) is evaluated as this will produce a bounding case . For each study, a pre-analysis condition is "run " (load flow analysis performed) to set the tap on the transformer. Then the 82 motor start scenario is run with the buses aligned as shown . As with previous analysis , the grid voltages used are 334 kV (pre-event) and 97% of 334 KV (motor start) . The loads are determined based on either Table 7.5.2-3-1 C or Table 7.5.2-3-1 D. 8.5.1 Split Bus Scenario SU-1C; Bus 1C Isolated on SU 1-2 8.5.1.1 Scenario SU-1 C-B1, Adjusted Normal Load Flow (Pre-analysis system conditioning) Split bus scenario SU-1 C is configured with Bus 1C on SU 1-2 and Buses 1D and 1E on SG 1-1. The pre-analysis condition is set up according to Table 7.5.2-3-1 C. This scenario is essentially the same as Case B-1 C but with Bus 1C isolated on SU 1-2 and buses 1D and 1E fed via SG 1-1 (scenario 7; A2/B2-1 C) . The primary output of this scenario is the resulting tap setting of the SU 1-2 transformer and SG 1-1 transformer. The resulting SU1-2 tap setting is determined using the methodology described in Section 7.6.2 . Other load flow information produced by this analysis is not used in any of the subsequent analyses . To determine the minimum pre-analysis voltage, the system voltage was lowered to achieve the desired/acceptable voltage on the 2400V system. The voltage was lowered to achieve approximately 2350V on the 2400V system by lowering the 345kV system voltage to 332.9kV. The voltage setpoint of the controlled buses (SU-1-2-LS) and (A 14-(SG)) is 0.97917 . The results show; SU 1-2 tap= 1.0125 SG 1-1 tap= 1.0125 Bus 1C = 2350V Bus 1D = 2341V Bus 1E = 2344V See Attachment 400 81 for scenario SU-1 C-81 loadflow results .

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LOCA Load Flow With Offsite Power Available Page 90 of 130 8.5.1.2 Scenario SU-1 C-B2, ECCS and MOV Motor Starting, (Transient) Load Shed Complete In this scenario (scenario 8; A2/B2-MS-1C) power is provided to 2400V Bus 1C by SU 1-2 transformer and Buses 1D and 1Eby SG 1-1 transformer. Both transforme r taps are fixed at the resulting tap from Scenario SU-1C-B1 , which are 1.0125. With the turbine trip , grid voltage drops 3% (of 332.9 KV) to 322.913kV and load shedding has occurred . Motors that receive an SIS and CHP start signal are assumed to start. Bus 1C and 1D bus voltages before , during and after the motor start are as follows . SU -1C-B2 I Bus Vbase Bus Voltaqe I Before During Aftef I Bus-1C 2400 0.9560 0.8063 0.9392 I Bus-1 D 2400 0.9543 0.8744 0.9455 I Bus voltages in the above table are compared to normal configuration bus voltage results from Tables 82-1 C and 82-1 D. Bus 1C voltage of 0.8063 pu during the motor start is greater than the min imum of 0.7408 pu . Bus 1C voltage of 0.9392 pu after motor start is greater than the min imum of 0.9380 pu . Bus 1D voltage of 0.8744 pu during the motor start is greater than the minimum of 0.7454 pu . Bus 1D voltage of 0.9455 pu is greater than the minimum of 0.9378 pu . Since these voltages are greater than the voltages reported in the normal configuration cases , th is case is bounded by the normal configuration . See 00 82 . 8.5.2 Split Bus Scenario SU-1 D: Bus 1D Isolated on SU 1-2 8.5.2.1 Scenario SU-1 D-B1, Adjusted Normal Load Flow (Pre-analysis system conditioning) Split bus scenario SU-1 D is configured with Bus 1D on SU 1-2 and Buses 1C and 1E on SG 1-1 . The pre-analysis condition is set up according to Table 7.5.2-3-1 D. This scenario is essentially the same as Case B- 1D but with Bus 1D isolated on SU 1-2 and buses 1C and 1E fed via SG 1-1 (scenario 3; A1/B1-1 D) . The primary output of this scenario is the resulting tap setting of the SU 1-2 transformer. The resulting SU 1-2 tap setting is determined using the methodology described in Section 7.6.2. Other load flow information produced by this analysis is not used in any of the subsequent analyses. To determine the minimum pre-analysis voltage , the system voltage was lowered to achieve the desired/acceptable voltage on the 2400V system . The voltage was lowered to achieve approximately 2350V on the 2400V system by lowering the 345kV system voltage to 334kV. The voltage setpoint of the controlled buses (SU-1-2-LS) and (A14-(SG)) is 0.97917. The results show;

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LOCA Load Flow With Offsite Power Available Page 91 of 130 SU 1-2 tap = 1.0 SG 1-1 tap= 1.01875 Bus 1C = 2350V Bus 1 D = 2350V Bus 1E = 2353V See Attachment 401 B1for scenario SU-1 D-B1 loadflow results . 8.5.2.2 Scenario SU-1 D-82, ECCS and MOV Motor Starting, (Transient) Load Shed Complete In this scenario (scenario 4; A2/B2-MS-1 D) power is provided to 2400V Bus 1D by SU 1-2 transformer and Buses 1C and 1Eby SG 1-1 transformer. Both transformer taps are fixed at the resulting tap from Scenario SU-10-B 1, which are SU 1-2 tap = 1.0 and SG 1-1 tap = 1.01875. With the turbine trip , grid voltage drops 3% (of 334 KV) to 323.980kV and load shedding has occurred. Motors that receive an SIS and CHP start signal are assumed to start. r r, r Bus 1C and 1[ lows. Information on this page I Bus I has been superseded as ~r I Bus-1C 558 I Bus-1 D indicated in the enclosed 321 I Bus voltages i1 from Tables B: Engineering Change age results start is greater than th less than the n 77045, markup of ~tor start is Bus 1C voltage of 0.87 ~08 pu . Bus 1C voltage of ( the voltage on EA-ELEC-EDSA-03, 0 pu . Since run with a slightly higher LOCA with Offsite Power 8.5.3 Solit 81 Available. 8.5.3.1 Scenario SU-1 D-2355-81, Adjusted Normal Load Flow (Pre-analysis system conditioning) Split bus scenario SU-1 D-2355 is the same as scenario SU-1 D but with Bus 1D voltage slightly greater at 2355V. This scenario is configured with Bus 1D on SU 1-2 and Buses 1C and 1Eon SG 1-1. The pre-analysis condition is set up according to Table 7.5.2-3-1 D. This scenario is essentially the same as Case B-1 D but with Bus 1D isolated on SU 1-2 and buses 1C and 1E fed via SG 1-1 (scenario 3; A1/B1-1D). The primary output of this scenario is the resulting tap setting of the SU 1-2 transformer.

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LOCA Load Flow With Offsite Power Available Page 92 of 130 The resulting SU1-2 tap setting is determined using the methodology described in Section 7.6.2. Other load flow information produced by this analysis is not used in any of the subsequent analyses . To determine the minimum pre-analysis voltage , the system voltage was lowered to achieve the desired/acceptable voltage on the 2400V system. The voltage was lowered to achieve approximately 2355V on the 2400V system (Bus 1D) by lowering the 345kV system voltage to 332 .?kV. The voltage setpoint of the controlled buses (SU-1-2-LS) and (A14-(SG)) is 0.97917 . The results show; SU 1-2 tap = 1.00625 SG 1-1 tap= 1.01875 Bus 1C = 2341V Bus 1 D = 2355V Bus 1E = 2343V See Attachment 402 B1for scenario SU-1 D-2355-B1 loadflow results . 8.5.3.2 Scenario SU-10-2355-82, ECCS and MOV Motor Starting, (Transient) Load Shed Complete In this motor starting scenario (scenario 4; A2/B2-MS-1 D) power is provided to 2400V Bus 1D by SU 1-2 transformer and Buses 1C and 1Eby SG 1-1 transformer. Both transformer taps are fixed at the resulting tap from Scenario SU-1D-2355-B1 , which are SU 1-2 tap= 1.00625 and SG 1-1 tap= 1.01875. With the turbine trip , grid voltage drops 3% (of 332 .7 KV) to 322.719kV and load shedding has occurred . Motors that receive an SIS and CHP start signal are assumed to start. The transient stability is performed using scenario 5; A2/B2-TS-1 D) and case study 8; B2-Z-iso1 D with the same parameters identified above for the multi-motor start loadflow . A summary of bus voltages for safety related buses , acceleration times for starting motors, and branch currents to the 2400V buses during Scenario SU-1 D-2355-B2 is provided below .

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LOCA Load Flow With Offsite Power Available Page 93 of 130 SU-1 D-2355-B2 Safety Related Bus Voltage Summary Bus Voltage Limiting Limiting Limiting Time To MCC MCC MCC SLUR Volts for Volts for Volts for Reset Contactor Load MOV 1 2 2 Bus Vbase Before During After (Sec) Pickup Operation Start Bus-1C 2400 0.9617 0.8731 0.9520 2.31 Bus-10 2400 0.9496 0.8114 0.9340 3.60 MCC-1 480 0.9660 0.8355 0.9498 0.8771 0.8754 0.8492 MCC-2 480 0.9571 0.7802 0.9354 0.8956 0.8733 0.8300 MCC-21 480 0.9616 0.8687 0.9515 0.8232 0.8670 0.7217 MCC-22 480 0.9417 0.6992 0.9141 0.8138 0.6741 0.6994 MCC-23 480 0.9623 0.8693 0.9521 0.8234 0.6769 0.7230 MCC-24 480 0.9415 0.6988 0.9139 0.8725 0.8353 0.7076 MCC-25 480 0.9697 0.8467 0.9548 0.8869 0.8703 (3) MCC-26 480 0.9595 0.7891 0.9389 0.8992 0.8694 (3) (1) From Calculation EA-ELEC-VOLT-050, Rev. 3 (2) From Calculation EA-ELEC-VOLT-051 , Rev. 1 (3) MOVs on MCC 25 and 26 do not receive an auto start signal associated with a OBA

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LOCA Load Flow With Offsite Power Ava ilable Page 94 of 130 SU-1 D-2355-82 Motor Voltage/ Acceleration Time Summary I Motor Terminal Voltage Min Req'd Motor Accel. Terminal 2 Motor Vbase Before During After Time (Sec) Volts 1 P7A-(SW) 2400 0.9476 0.8091 0.9320 0.6708 1 P7B-(SW) 2400 0.9600 0.8713 0.9503 0.6708 P7C-(SW) 2400 0.9496 0.8038 0.9323 1.22 0.6708 P8A-(AF) 2400 0.9617 0.8731 0.9520 off 0.6708 P8C-(AF) 2400 0.9489 0.8106 0.9333 0.6708 1 P52A-(CC) 2400 0.9613 0.8727 0.9516 0.6708 P52B-(CC) 2400 0.9496 0.8096 0.9335 0.62 0.6708 P52C-(CC) 2400 0.9617 0.8711 0.9515 0.55 0.6708 P54A-(CS) 2400 0.9496 0.8081 0.9334 3.00 0.6708 P54B-(CS) 2400 0.9617 0.8711 0.9516 2.64 0.6708 P54C-(CS) 2400 0.9617 0.8731 0.9520 off 0.6708 P55A 480 0.9422 0.6672 0.9070 0.88 0.6708 P55B 480 0.9422 0.6631 0.9045 0.72 0.6708 1 P55C 480 0.9585 0.8651 0.9483 0.6708 P56A 480 0.9571 0.7637 0.9267 2.62 0.6708 P56B 480 0.9660 0.8204 0.9428 2.41 0.6708 P66A-0.9496 0.8089 0.9332 0.6708 (HPSI) 2400 2.74 P66B-0.9617 0.8708 0.9514 0.6708 (HPSI) 2400 2.41 P67 A-(LPSI) 2400 0.9496 0.8084 0.9332 0.82 0.6708 P67B-(LPSI) 2400 0.9617 0.8683 0.9509 0.72 0.6708 (1) Motor Running , No Start (2) 70% for 2300V I 460V rated motors is 0.6708Vpu at 2400V / 480V. 90% for 2300V I 460V rated motors is 0.8625Vpu at 2400V I 480V

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LOCA Load Flow With Offsite Power Available Page 95 of 130 SU-1D-2355-B2 Branch Current Flow Summary Steady Steady Peak Peak State State Fro m To Branch (PU) (Amps) PU) (Amps) SG1-1 Bus 1C A 11-EX02-SUB 1-2 0.0873 2100 0.0311 748 SU1-2 Bus 10 A12-X04-SUB1-2 0.1114 2680 0.0396 953 Ibase =Sbasef(Vbase X Sqrt 3) =100 MVN(2400V X 1. 732) =24,056.26 A = 1 pu Data from Appendix R A summary of bus voltage results and motor acceleration times for Scenario SU-1 D-2355-B2 is provided in Appendix B-SU-1 D-2355. Transient voltage plots and motor speed/current graphs are provided in Appendix R. A print out of EDSA results is provided in Attachment 402 B2. 8.5.3.2.1 Results Discussion for 2400V Buses and Motors During the EGGS motor starting voltage transient, limiting factors for 2400V buses 1C and 1D include voltage recovery to 0.9328 volts (pu) within 6.0 seconds to prevent transfer of

           "'-'-to Emeraencv Diesel Generators (EDGs). Review of the 2400V bus voltages
~:~~:~ Information on this page has                                                           D~n3~8puin 2.31 se                                                                                         340 pu. Bus 1Dvolt by usin been superseded as                                                 s achieved voltage

~eit~i achiev indicated in the enclosed ~=~~~for cenario is not worst c scenari Engineering Change 77648, nds this The Bu markup of start are greater configu EA-ELEC-EDSA-03, hal k;onfiguration but abo configu adequa LOCA with Offsite Power ~rate See Attach Available. Bus 1C and 1D voltage remains well above the FLU R's actuation curve such that FLUR actuation is not a concern. Voltage recovers to greater than 0.7750 pu well within the time to prevent the actuation of the FLU Rs. All 2400 motors accelerate and achieve 98% of their rated speed within 4 seconds. The longest acceleration time for any of the 2400V motors was 3.0 seconds for the P54A Containment Spray pump. Voltages at the medium voltage (2400V) motor terminals are

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LOCA Load Flow With Offsite Power Available Page 96 of 130 greater than 70 percent of rated voltage during start and recover to greater than 90 percent of rated . All 2400V motors start and accelerate to at least 0.98 pu speed . 8.5.3.2.2 Results Discussion for 480V Buses and Loads As discussed in section 7.5.2 static inrush loads are modeled for charging pumps P55A/B/C , boric acid pumps P56A/B, MCC 1-MOVs, and MCC 2-MOVs until the voltage recovers to an acceptable level. Starting voltage requirement for these motors are given in Table 8.5.3.4 below. Timing to start motors is controlled by event manager scenario 82-Z-iso10. Table 8.3.5.4 Starting Requirements for Selected 480V Loads Motor Vstart - Required Time to Vstart I P55A 0.6708 1.418 I P55B 0.6708 1.476 I P55C runninQ runninQ I P56A 1 0.8172@ MCC 2 1.681 I P568 1 0.8640 (@ MCC 1 1.538 I MCC-1-X1 0.8771 1.686 I MCC-2-X 1 0.8956 3.895 I (1) From Calculation EA-ELEC-VOLT-050 All 480 motors accelerate and achieve 98% of their rated speed within 3 seconds except as discussed in section 1.3.1. The longest acceleration time for any of the 480V motors was 2.62 seconds for the P-56A. Voltages at the 480V motor terminals and Motor Control Centers recover to required minimum starting voltage as denoted in the table above and recover to greater than 90 percent of rated voltage after acceleration. MCCs 1, 2, 21-26 voltage recovers to 0.9139 per unit or above . Charging pumps recover to 0.9045 per unit or above. Boric acid pumps recover to 0.9267 per unit or above . A comparison of tables SU-10-2355-82 and SU-C0-10-82 shows that this scenario does not produce worst case voltage results . Therefore, further scenarios are not evaluated , see scenario SU-C0-10 (worst case). 8.5.4 Split Bus Scenario SU-CD-1 C; Buses 1C & 1D Isolated on SU 1-2: Max 1C 8.5.4.1 Split Bus Scenario SU-CD-1 C-B1, Adjusted Normal Load Flow (Pre-analysis system conditioning) Split bus scenario SU-C0-1 C-81 is configured with Buses 1C and 10 on SU 1-2 and Bus 1Eon SG 1-1. The pre-analysis condition is set up according to Table 7.5 .2-3-1 C. This scenario is essentially the same as Case B-1 C but with Buses 1C and 10 isolated on SU

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LOCA Load Flow With Offsite Power Avai lable Page 97 of 130 1-2 and bus 1E fed via SG 1-1 (scenario 7; A1/B1-1C) . The primary output of this scenario is the resulting tap settings of the SU 1-2 and SG 1-1 transformers, Bus 1C and 1 D voltage and grid voltage. Other load flow information produced by this analysis is not used in any of the subsequent analyses. The resulting SU1-2 and SG 1-1 tap settings are determined using the methodology described in Section 7.6.2 and then modified by the results in scenario B4.1 because that provided the worst case recovery voltage. The reason for this change in methodology from the normal configuration line-ups is that scenario B4.1 in the split bus configuration is slightly different where the LTC is off when the third containment spray pump motor is started. This adds load to the bus and with no tap change the resultant voltage is less. Since there is little to no voltage margin in* the split bus cases , the transformer tap had to be changed along with the corresponding grid voltage in scenario 81 otherwise scenario 84 .1 voltage would not have recovered to above reset. The system voltage is 333 .505 kV which is acceptable since it is still below the grid limitation of 334kV. The voltage on the 2400V system and transformer taps are given below. SU-CD-1C-B1 Safety Related Bus Voltage Summary V!lrid=323.500 kV Bus Vbase B1 (SU1-2 LTC Off) Steady State Bus-1C 2400 0.9913 (2379V) Bus-10 2400 0.9913 (2379V) Bus-1 E 2400 0.9846 (2363V) SU 1-2 tap= 1.0375 SG 1-1 tap= 1.00625 See Attachment 405 81 for scenario SU-CD-1 C-B1 loadflow results . 8.5.4.2 Split Bus Scenario SU-CD-1 C-82, ECCS and MOV Motor Starting, (Transient) Load Shed Complete In this scenario power is provided to 2400V Buses 1C and 1D by SU 1-2 transformer and Bus 1E by SG 1-1 transformer. Both transformer taps are fixed at the resulting tap from Scenario SU-CD-1C-B1, which are SU 1-2 = 1.0375 and SG 1-1 = 1.00625. With the turbine trip , grid voltage drops 3% (of 333.505 KV) to 323.500kV and load shedding has occurred. Motors that receive an SIS and CHP start signal are assumed to start. The Paladin motor starting routine in Advanced Power Flow uses scenario 8 (A 1/B2-MS-1C). The transient stability is performed using scenario 9; (A2/B2-TS-1C) and case study 12; 82-Z-isoCD_C with the same parameters identified above for the multi-motor start loadflow.

PALISADES NUCLEAR PLANT- ENGINEERING ANALYSIS CONTINUATION SHEET Cale. No.: EA-ELEC-EDSA-03 Revision 2 Cale.

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LOCA Load Flow With Offsite Power Available Page 98 of 130 A summary of bus voltages for safety related buses , acceleration times for starting motors , and branch currents to the 2400V buses during Scenario SU-CD-1 C-B2 is provided below. SU-CD-1 C-B2 Safety Related Bus Voltage Summary Bus Voltage Limiting Limiting Limiting Time To MCC MCC MCC SLUR Volts for Volts for Volts for Reset Contactor Load MOV 1 2 Bus Vbase Before During After (Sec) Pickup Operation Start2 Bus-1C 2400 0.9659 0.7408 0.9380 4.920 Bus-10 2400 0.9649 0.7440 0.9378 4.968 MCC-1 480 0.9704 0.703 1 0.9354 0.8771 0.8754 0.8492 MCC-2 480 0.9729 0.7129 0.9393 0.8956 0.8733 0.8300 MCC-21 480 0.9649 0.6884 0.9311 0.8232 0.8670 0.7217 MCC-22 480 0.9580 0.6685 0.9227 0.8138 0.6741 0.6994 MCC-23 480 0.9655 0.6888 0.9317 0.8234 0.6769 0.7230 MCC-24 480 0.9578 0.6681 0.9225 0.8725 0.8353 0.7076 MCC-25 480 0.9741 0.7133 0.9403 0.8869 0.8703 (3) MCC-26 480 0.9753 0.7213 0.9429 0.8992 0.8694 (3) (1) From Calculation EA-ELEC-VOLT-050, Rev. 3 (2) From Calcu lation EA-ELEC-VOLT-051 , Rev. 1 (3) MOVs on MCC 25 and 26 do not receive an auto start signal associated with a OBA

PALISADES NU CLEAR PLANT - ENGINEERING ANALYSIS CONTINUATION SHEET Cale. No.: EA-ELEC-EDSA-03 Revision 2 Cale.

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LOCA Load Flow With Offs ite Power Available Page 99 of 130 SU-CD-1 C-82 Motor Voltage/ Acceleration Time Summary I Motor Terminal Voltage Min Req'd Motor Accel. Terminal 2 Motor Vbase Before During After Time (Sec) Volts 1 P7A-(SW) 2400 0.9629 0.7414 0.9358 0.6708 1 P7B-(SW) 2400 0.9659 0.7345 0.9365 ~ 39 0.6708 P7C-(SW) 2400 0.9629 0.7414 0.9357 0.6708 P8A-(AF) 2400 0.9649 0.7395 0.9370 off 0.6708 P8C-(AF) 2400 0.9649 0.7440 0.9378 0.6708 1 P52A-(CC) 2400 0.9659 0.7391 0.9376 0.73 0.6708 P52B-(CC) 2400 0.9644 0.7434 0.9373 0.6708 P52C-(CC) 2400 0.9659 0.7390 0.9375 0.75 0.6708 P54A-(CS) 2400 0.9649 0.7409 0.9372 3.39 0.6708 P54B-(CS) 2400 0.9659 0.7391 0.9377 3.28 0.6708 P54C-(CS) 2400 0.9659 0.7408 0.9380 Off 0.6708 P55A 480 0.9585 0.6379 0.9155 0.91 0.6708 1 P55B 480 0.9542 0.6627 0.9187 0.6708 P55C 480 0.9656 0.6420 0.9182 0.66 0.6708 P56A 480 0.9729 0.6978 0.9306 2.64 0.6708 P56B 480 0.9704 0.6904 0.9285 2.69 0.6708 P66A-0.9649 0.7416 0.9371 0.6708 (HPSI) 2400 3.09 P66B-0.9659 0.7388 0.9374 0.6708 (HPSI) 2400 3.00 P67 A-(LPSI) 2400 0.9649 0.7412 0.9371 0.98 0.6708 P67B-(LPSI) 2400 0.9659 0.7367 0.9369 1.01 0.6708 (1) Motor Running , No Start (2) 70% for 2300V I 460V rated motors is 0.6708Vpu at 2400V I 480V. 90% for 2300V I 460V rated motors is 0.8625Vpu at 2400V I 480V

PALISADES NUCLEAR PLANT - ENGINEERING ANALYSIS CONTINUATION SHEET Cale. No.: EA-ELEC-EDSA-03 Revision 2 Cale.

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LOCA Load Flow With Offsite Power Available Page 100 of 130 SU-CD-1C-B2 Branch Current Flow Summary Steady Steady Peak Peak State State From To Bra nch (PU) (Amps) PU) (Amps) SU1 -2 Bus 1C A11-X04 -SUB 1-2 0.1101 2649 0.0363 873 SU1-2 Bus 10 A12-X04 -SUB 1-2 0.0740 1780 0.0358 861

       !base = Sbasel(Vbase X Sqrt 3) = 100 MVA/(2400V X 1.732) = 24,056 .26 A= 1 pu Data from Appendix V A summary of bus voltage results and motor acceleration times for Scenario SU-CD-1 C-82 is provided in Appendix B-SU-CD-1 C. Transient voltage plots and motor speed/current graphs are provided in Append ix V. A print out of EDSA results is provided in Attachment 405 82 .

8.5.4.2.1 Results Discussion for 2400V Buses and Motors During the ECCS motor starting voltage transient, limiting factors for 2400V buses 1C and 1D include voltage recovery to 0.9328 volts (pu) within 6.0 seconds to prevent transfer of the buses to Emergency Diesel Generators (EDGs) . Review of the 2400V bus voltages indicates that during the ECCS motor starts , Bus 1C voltage dips to 0.7408 pu and recovers to 0.9380 pu . Bus 1C voltage recovers to the SLUR reset voltage of 0.9328 pu in 4.920 seconds . Similarly, Bus 1D voltage dips to 0.7440 pu and recovers to 0.9378 pu. Bus 1D voltage recovers to the SLUR reset voltage in 4.968 seconds. SLUR reset is achieved . Per assumption 6.0.17, motor starting loadflow is used for voltage results and transient stability is used for time plots. Bus 1C and 1D voltage remains well above the FLU R's actuation curve such that FLUR actuation is not a concern . Voltage recovers to greater than 0.7750 pu well within the time to prevent the actuation of the FLU Rs. All 2400 motors accelerate and achieve 98% of their rated speed within 4 seconds . The longest acceleration time for any of the 2400V motors was 3.39 seconds for the P54A Containment Spray pump. Voltages at the medium voltage (2400V) motor terminals are greater than 70 percent of rated voltage during start and recover to greater than 90 percent of rated . All 2400V motors start and accelerate to at least 0.98 pu speed . 8.5.4.2.2" Results Discussion for 480V Buses and Loads As discussed in section 7.5.2 static inrush loads are modeled for charging pumps P55A/C , boric acid pumps P56A/B/C , MCC 1-MOVs, and MCC 2-MOVs until the voltage recovers to an acceptable level. Starting voltage requirement for these motors are given in Table 8.5.4 .2.2 below. Timing to start motors is controlled by event manager case study 12; B2-Z-iso CD_C .

PALISADES NUCLEAR PLANT - ENGINEERING ANALYSIS CONTINUATION SHEET Cale. No.: EA-ELEC-EDSA-03 Revision 2 Cale.

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LOCA Load Flow With Offsite Power Available Page 101 of 130 Table 8.5.4.2.2 Startin Requirements for Selected 480V Loads Motor Vstart - Re uired Time to Vstart P55A 0.6708 1.596 I P55B runnin runnin P55C 0.6708 1.565 I P56A 1 2.280 I P56B 1 3 .987 I MCC-1-X 1 0.8771 4 .166 I MCC-2-X 1 0.8956 4 .305 I (1) From Calculation EA-ELEC-VOLT-050 I I All 480 motors accelerate and achieve 98% of their rated speed within 3 seconds except a s discussed in section 1.3.1. The longest acceleration time for any of the 480V motors was 2.69 seconds for the P-568. Voltages at the 480V motor terminals and Motor Control Centers recover to required minimum starting voltage as denoted in the table above and recover to greater than 90 percent of rated voltage after acceleration. MCCs 1, 2 , 21-26 voltage recovers to 0.9225 per unit or above. Charging pumps recover to 0.9155 per unit or above . Boric acid pumps recover to 0.9285 per unit or above. MCC bus voltages remain above required minimum drop-out per EA-ELEC-VOL T-050. 8.5.4.3 Split Bus Scenario SU-CD-1 C-B4, ECCS Motors Running with Bus 1 E Re-Energized Split bus scenario SU-CD-1 C-84 is configured with Buses 1C and 1 D on SU 1-2 and Bus 1Eon SG 1-1. The pre-analysis condition is set up according to Table 7.5 .2-3-1 C. This scenario is essentially the same as Case B-1 C but with Buses 1C and 1D isolated on SU 1-2 and Bus 1E fed via SG 1-1 (scenario 10; A4/B4-1C). Scenario 84 evaluates the stead y state condition after the ECCS motors have started and are running. MOV operation is complete and Bus 1Eis re-energized from SG 1-1 (this has negligible voltage impact on S u 1-2 voltage. Loading on the ECCS pumps are set at bounding values (See Appendix D) to envelope any expected mode of operation. MCC loads are at LOCA values as identified in Appendix E. Containment Spray Pump P54C is running . System voltage remains the same at 323.500 kV. The SU1-2 and SG 1-1 tap changers are functional and have adjusted to control voltage to the previous pre-event voltage of approximately 2380V. The resulting SU 1-2 tap is 1.10. This is the last tap on SU 1-2. SG 1-1 tap is 1.04375, about midway boost tap .

PALISADES NUCLEAR PLANT - ENGINEERING ANALYSIS CONTINUATION SHEET Cale. No .: EA-ELEC-EDSA-03 Revision 2 Cale.

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LOCA Load Flow With Offsite Power Available Page 102 of 130 SU-CD-1 C-B4 Safety Related Bus Voltage Summary Limiting Limiting B4 MCC MCC Limiting (SU1-2 LTC Time To Volts for Volts for MCC On) SLUR Reset Contactor Load Volts for 1 2 Bus Vbase Steady State (Sec) Pickup Operation MOV Start2 Bus-1 C 2400 0.9896 No Drop Out Bus-1D 2400 0.9896 No Drop Out MCC-1 480 0.9896 0.8771 0.8754 0.8492 MCC-2 480 0.9938 0.8956 0.8733 0.8300 MCC-21 480 0.9875 0.8232 0.8670 0.7217 MCC-22 480 0.9792 0.8138 0.6741 0.6994 MCC-23 480 0.9875 0.8234 0.6769 0.7230 MCC-24 480 0.9792 0.8725 0.8353 0.7076 MCC-25 480 0.9938 0.8869 0.8703 0.7143 MCC-26 480 0.9958 0.8992 0.8694 0.7213 (1) From Calculation EA-ELEC-VOLT-050 (2) From Calculation EA-ELEC-VOL T-051 Transformer Loading - Case SU-CD-1 C-B4 Capacity Scenario B4 {L TC On) Transformer (KVA) Loading (KVA) Loading% SG1-1 10500 1348.2 11 SU1-2 10600 7523.6 59 SP-11 750 394.2 53 SP-12 750 511 .3 68 SP-13 750 (1) 366.6(88.2) 49 SP-14 750 543.9 73 SP-15 750 0 0 SP-16 750 501 .75 67 SP-19 750 438 .6 58 SP-20 750 373 .6 50 SP-200 750 248.8 33 (1) 150A (High side) load limit per SOP-30

PALISADES NUCLEAR PLANT - ENGINEERING ANALYSIS CONTINUATION SHEET Cale. No. : EA-ELEC-EDSA-03 Revision 2 Cale. Title : LOCA Load Flow With Offsite Power Available Page 103 of 130 Branch Current Flow - Case SU-CD-1 C-84 Scenario 84 From Bus To Bus Branch Code (L TC On) (Amps) SU-1-2-LS 152-106-LS (Bus 1C) A11-X04-SUB1-2 900 SU-1-2-LS 152-202-LS (Bus 1D) A 12-X04-SUB 1-2 816 A14-(SG Bus) 152-302-LS (Bus 1E) A 13-A 14-SUB1-2 324 A summary of bus voltage results for Scenario SU-CD-1 C-B4 is provided in Appendix B-SU-CD-1 C and Attachment 405-B4 . A print out of EDSA results for transformer loading , and branch current flows are provided in Attachment 405-B4. Voltages on 2400V buses 1C and 1Dare greater than 0.9896 pu and do not challenge the second level undervoltage relays Voltages on all of the safety related buses are 0.9792 pu or above and adequate for operation of all loads. Review of Appendix B-SU-CD-1 C and 05-B4 (bus flow portion indicated that all relevant running motors have terminal voltages in excess of 90 percent, or 0.8625 pu at 480V base. The multiple motors that have terminal voltages less than rated are cooling tower loads that would be tripped and are not relevant to this case . Steady state transformer loading is within the rating of all transformers. Again it is noted that loading for this analysis is conservatively heavy to produce conservative voltages. The resulting current flows are high and exceed the emergency (LOCA) condition continuous ratings specified in SOP-30, Section 4.3. The feeder to 2400V Bus 1C is supplying 900A and exceeds the SOP-30 LOCA rating (795A) by 13%. The feeder to 2400V Bus 1D is supplying 816A and exceeds the SOP-30 LOCA rating (81 OA) by 1%. It should be noted that in an effort to achieve a bounding analysis, system load is inflated and the resulting current flow is not necessarily representative of expected actual current flow . However, operator action to reduce the unnecessary load would be required if necessary as is already incorporated into the SOP (Section 4.3 .d). Further, the higher loads are a short term affect. The impact of the higher currents is an elevated temperature which may result in a reduction of cable life. SOP-030 already includes load monitoring requirements to address the cable loading issue . 8.5.4.4 Split Bus Scenario SU-CD-1 C-B4.1, ECCS Motors Running, Bus 1 E Energized, LTC OFF, CS Start Split Bus Scenario B4.1 is different than the normal configuration Scenario B4 .1 in that the load tap changer is off. Split Bus Scenario B4.1 evaluates the condition after the ECCS motors have started and are running . MOV operation is complete and Bus 1E is re-energized and Containment Spray Pump P54C is starting . Loading on the ECCS pumps

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LOCA Load Flow With Offsite Power Available Page 104 of 130 are set at bounding values (See Appendix D) to envelope any expected mode of operation . MCC loads are at LOCA values as identified in Appendix E. The simultaneous starting of P54C and re-energization of Bus 1 E has negligible significance in this line-up. This is because Bus 1E is separated from Buses 1C and 1D by different transformer feeds . The electrical connection is back in the switchyard and the strength of the 345 kV system overrides any voltage drop effect on 2400V Buses 1C and 1D when Bus 1Eis re-energized . This scenario is slightly different than other A/B4.1 scenarios because Containment Spray Pump P45C is started 15 seconds after event initiation and the transformer has not changed taps yet. Since the 15 seconds start time is a critical characteristic for this scenario , no tap change is accounted for. The SU 1-2 transformer auto-tap changer has not operated from the B2 case . Bus 1E is re-energized via SG 1-1 and Containment Spray Pump P54C starts . Therefore the tap positions for SU 1-2 and SG 1-1 are the same as in scenario SU-CD-1 C-B2; SU 1-2 tap= 1.0375 and SG 1-1 tap= 1.00625. The grid voltage is 323.500 kV. Scenario "10 - A4/B4 - 1C" is used with alteration to P54C starting . The motor starting case using the Paladin Advanced Motor Starting routine starts P54C with the conditions above . The transient stability case uses scenario "10 - A4/B4 - 1C" and Case Study "11 - B4.1_iso_CD ." Bus 1E is energized to SG 1-1 via breaker 152-302 and Containment Spray Pump P54C is started at 1.0 seconds. A final load flow is not run since the transformer loading and branch current flows would be similar to those values provided in scenario SU-CD-1 C-B4. The only difference is the tap on SU 1-2 and SG 1-1. The branch currents are expected to be slightly larger in this scenario due to the effect of lower voltage on constant power loads until transformer tap changer completes its operation. A summary of bus voltage results for Scenario SU-CD-1C-B4.1 is provided in Appendix B-SU-CD-1 C. A print out of EDSA results for is provided in Attachment 405-B4 .1. Plots are provided in Appendix X.

PALISADES NUCLEAR PLANT - ENGINEERING ANAL Y.SIS CONTINUATION SHEET Cale. No.: EA-ELEC-EDSA-03 Revision 2 Cale.

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LOCA Load Flow With Offsite Power Available Page 105 of 130 SU-CD-1C-B4.1 Safety Related Bus Voltage Summary Time Limiting B4.1 Motor Start To MCC Limiting (SU1-2 LTC Off) SLUR Volts for Volts for Limiting Reset Contactor Load Volts for Bus Vbase Before During After (Sec) Pickup 1 Ops2,3 Start2*3 Bus-1C 2400 0.9362 0.9087 0.9341 2.96 Bus-1D 2400 0.9361 0.9107 0.9342 2.97 MCC-1 480 0.9346 0.9059 0.9323 0.8771 0.8754 0.8492 MCC-2 480 0.9381 0.9118 0.9362 0.8956 0.8733 0.8300 MCC-21 480 0.9310 0.9021 0.9288 0.8232 0.8670 0.7217 MCC-22 480 0.9230 0.8960 0.9210 0.8138 0.6741 0.6994 MCC-23 480 0.9317 0.9027 0.9294 0.8234 0.6769 0.7230 MCC-24 480 0.9228 0.8958 0.9208 0.8725 0.8353 0.7076 MCC-25 480 0.9383 0.9096 0.9360 0.8869 0.8703 0.7143 MCC-26 480 0.9395 0.9131 0.9375 0.8992 0.8694 0.7213 P7A-(SW) 0.9352 0.9077 0.9330 0.8625 0.6708 P7B-(SW) 0.9361 0.9107 0.9342 0.8625 0.6708 P7C-(SW) 0.9340 0.9086 0.9321 0.8625 0.6708 P8A-(AF ) 0.9373 0.9099 0.9352 0.8625 0.6708 P8C-(AF) 0.9354 0.9100 0.9335 0.8625 0.6708 P52A-(CC) 0.9358 0.9083 0.9336 0.8625 0.6708 P52B-(CC) 0.9356 0.9102 0.9337 0.8625 0.6708 P52C-(CC) 0.9357 0.9082 0.9336 0.8625 0.6708 P54A-(CS) 0.9353 0.9099 0.9334 0.8625 0.6708 P54B-(CS) 0.9359 0.9083 0.9337 0.8625 0.6708 P54C-(CS) 0.9362 0.9067 0.9337 0.8625 0.6708 P55A 0.9193 0.8921 0.9172 0.8625 0.6708 P55B 0.9191 0.8920 0.9170 0.8625 0.6708 P55C 0.9278 0.8986 0.9255 0.8625 0.6708 P56A 0.9327 0.9062 0.9306 0.8625 0.6708 P56B 0.9302 0.9013 0.9278 0.8625 0.6708 P66A-(HPSI) 0.9352 0.9098 0.9333 0.8625 0.6708

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LOCA Load Flow With Offsite Power Available Page 106 of 130 SU-CD-1 C-B4.1 Safety Related Bus Voltage Summary Time Limiting B4.1 Motor Start To MCC Limiting (SU1-2 LTC Off) SLUR Volts for Volts for Limiting Reset Contactor Load Volts for 1 Ops2.3 23 Bus Vbase Before During After (Sec) Pickup Start

P66B-(HPS I) 0.9356 0.9081 0.9334 0.8625 0.6708 P67A-(LPSI ) 0.9353 0.9099 0.9334 0.8625 0.6708 P67B-(LPSI ) 0.9350 0.9074 0.9328 0.8625 0.6708 V 1A 0.9121 0.8847 0.9100 0.8625 0.6708 V2A 0.9126 0.8852 0.9105 0.8625 0.6708 V3A 0.9235 0.8965 0.92 15 0.8625 0.6708 V4A 0.9147 0.8851 0.9123 0.8625 0.6708 (1) From Calculation EA-ELEC-VOL T-050 (2) From Ca lculation EA-ELEC-VOLT-051 for MCCs.

(3) 70% for 2300V and 460V rated motors is 0.6708V pu at 2400V or 480V base, 90% for 2300V and 460V rated motors is 0.8625V pu at 2400V or 480V base Voltage on 2400V buses 1C and 1D dip below the SLUR drop out point of 0.9280 per unit. During the P54C motor start all bus voltages remain above 0.89 pu and all motor terminal voltages remain above 90% of rated (.8625V pu at 480V base) except for some cooling tower loads that are not relevant to this scenario. Per Appendix X, the transient stability shows pump motor P54C starts and accelerates to with in 0.98 percent of rated speed in 2.426 seconds . 8.5.4.5 Split Bus Scenario SU-CD-1 C-82.1, ECCS Motor Start, Delayed P54A/B Start Concurrent w/ SLUR Reset This scenario evaluates the unique condition of starting Containment Spray Pumps P54A and P54B just as 2400V bus 1C and 1D voltage is recovering and the SLURs are about to reset. The concern is a delay in SLUR reset due to the two motors starting such that the SLUR time delay expires and the safety related buses are transferred to the emergency diesel generators. Containment Spray pumps receive start signals from the CHP logic whose actuation is variable with respect to time and is dependent on the LOCA and other factors . This event occurs just after the ECCS motors start in response to the SIS while those motors are accelerating and voltage is recovering. To achieve the most conservative results with respect to voltage and SLUR reset this scenario starts the two Containment Spray Pumps just prior to either 2400V bus voltage reaching 0.9328V pu. This was determined through multiple runs of the EDSA software similar to the B2 scenario , the SU1-2 transformer tap remains set at the pre-event position of 1.0375 and grid voltage is 97% of

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LOCA Load Flow With Offsite Power Available Page 107 of 130 333.505kV = 323 .500kV. This scenario addresses the concerns of Condition Report AR01018366 . Since the primary concern of this scenario is achieving SLUR reset and not to evaluate the entire distribution system only sufficient data is gathered to demonstrate reset. To implement the simulation , all Scenario B2 loads except P54A, B, and Care simulated starting and the time to reset determined to be 3.718 seconds. Also, starting initiation times for selected 480V motors are shown in Table 8.5.4 .5. No plots provided for determining these values . These values (including the 1 second simulation start delay) are input to the event manager (Case Study 13 B2 .1-Z_iso_CD-C) using Scenario 9; "A2/B2-TS-1 C" for the starting time for the P54A and B pumps and 480V motors. The result of the simulation with all Scenario B2-1 C loads starting - with P54A and B being delayed - are provided in Appendix W for the bus voltage profile and P54A and P54B motor speed/current graphs. From Appendix W, Bus 1C and 1D voltage dips to a minimum of 0.7771 pu during the ECCS block start of all motors except P54A, Band C. Voltage recovers to 0.9328 pu on Bus 1C at 2.718 seconds and 0.9328 pu on Bus10 at 2.734 seconds after the ECCS motor start. It is noted that a later start in the event manager would result in exceed ing the SLUR reset prior to starting the CS pumps. It is noted that the specified time intervals are approaching the EDSA software integration time step limitations , therefore . Some slight variations in time values are introduced) . At th is time , 2.718 seconds after ECCS motor start, both Containment Spray pumps P54A and B are started and voltage dips to 0.8875/0.8870 pu on 2400V buses 1C and 1 D, and 0.8838/0 .8858 pu at Containment Spray pump P54A/P54B motor terminals . Ultimately voltage on Bus 1C recovers to 0.9328 (SLUR Reset) after 5.606 seconds total elapsed time . Voltage on Bus 1D recovers to 0.9328 (SLUR Reset) after 5.632 seconds total elapsed time . Based on these results it is concluded that the second level undervoltage relays ach ieve reset prior to expiration of the 6.0 second time delay and subsequent transfer of the 2400V buses to the EDGs. It is noted that the minimum voltage at the Containment Spray pump motor terminals is 0.8838 pu which is sufficient to ensure motor start and acceleration to rated speed. Pump motor P54A achieves rated speed in approximately 2.7 seconds (6.400-3.718=2.682). Pump motor P54B achieves rated speed in approximately 2:6 seconds (6.302-3.718=2 .584) .

PALISADES NUCLEAR PLANT - ENGINEERING ANALYSIS CONTINUATION SHEET Cale. No.: EA-ELEC-EDSA-03 Revision 2 Cale.

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LOCA Load Flow With Offsite Power Available Page 108 of 130 Table 8.5.4.5 startmQ R equiremen ts for Seec I ted 480V Loa d s Motor Vstart - Required Time to Vstart P55A 0.6708 1.0 P55B running runn ing P55C 0.6708 1.0 P56A 1 0.8172 (a), MCC 2 1.761 P56B 1 0.8640 (@ MCC 1 3.296 MCC-1-X 1 0.8771 3.516 MCC-2-X1 0.8956 3.622 (1) From Calculation EA-ELEC-VOLT-050 8.5.5 Split Bus Scenario SU-CD-1 D; Buses 1C & 1 D Isolated on SU 1-2; Max 1 D 8.5.5.1 Split Bus Scenario SU-CD-10-81, Adjusted Normal Load Flow (Pre-analysis system conditioning) Split bus scenario SU-CD-10-B 1 is configured with Buses 1C and 1 D on SU 1-2 and Bus 1Eon SG 1-1. The pre-analysis condition is set up accord ing to Table 7.5 .2-3-1 D. Th is scenario is essentially the same as Case B-1 D but with Buses 1C and 1D isolated on SU 1-2 and bus 1E fed via SG 1-1 (scenario 3; A1/B1-10). The primary output of this scenario is the resu lting tap setting of the SU 1-2 and SG 1-1 transformers , Bus 1C and 1D voltage and grid voltage . Other load flow information produced by this analysis is not used in any of the subsequent analyses. The resulting SU1-2 and SG 1-1 tap settings are determined using the methodology described in Section 7.6.2 and then modified by the results in scenario B4 .1 because that provided the worst case recovery voltage. The reason for this change in methodology from the normal configuration line-ups is that scenario B4 .1 in the split bus configuration is slightly different where the LTC is off when the third containment spray pump motor is started. This adds load to the bus and with no tap change the resultant voltage is less. Since there is little to no voltage margin in the split bus cases , the transformer tap had to be changed along with the corresponding grid voltage in scenario B1 otherwise scenario B4.1 voltage would not have recovered to above reset. The system voltage is 333.273 kV which is acceptable since it is still below the grid limitation of 334kV. The voltage on the 2400V system and transformer taps are given below. SU-CD-1 D-B4 Safety Related Bus Voltage Summary Vand=333.273 kV Bus Vbase B4 (SU 1-2 LTC Off) Steady State Bus-1C 2400 0.9921 (2381V)

PALISADES NUCLEAR PLANT - ENGINEERING ANALYSIS CONTINUATION SHEET Cale. No.: EA-ELEC-EDSA-03 Revision 2 Cale.

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LOCA Load Flow With Offsite Power Available Page 109 of 130 SU-CD-1 D-B4 Safety Related Bus Voltage Summary Vond=333.273 kV Bus Vbase B4 (SU1-2 LTC Off) Steady State Bus-1D 2400 0.9929 (2383V) Bus-1E 2400 0.9838 (2361V) SU 1-2 tap= 1.0375 SG 1-1 tap= 1.00625 See Attachment 404 81 for scenario SU-CD-1 D-81 loadflow , branch flows and tap changer results. 8.5.5.2 Split Bus Scenario SU-CD-10-82, ECCS and MOV Motor Starting, (Transient) Load Shed Complete In this motor starting scenario (scenario 4 ; A2/B2-MS-1 D) power is provided to 2400V Buses 1C and 1D by SU 1-2 transformer and Bus 1Eby SG 1-1 transformer. Both transformer taps are fixed at the resulting tap from Scenario SU-CD-1 D-81, which are SU 1-2 tap= 1.0375 and SG 1-1 tap= 1.00625 . With the turbine trip , grid voltage drops 3% (of 333 .273 kV) to 323.275 kV and load shedding has occurred. Motors that receive an SIS and CHP start signal are assumed to start. The Paladin motor starting routine in Advanced Power Flow uses scenario 4 -A1/B2 - MS-1D. The transient stability is performed using scenario 5; (A2/B2-TS-1 D) and case study 9; 82-Z-iso CD with the same parameters identified above for the multi-motor start loadflow. A summary of bus voltages for safety related buses, acceleration times for starting motors, and branch currents to the 2400V buses during Scenario SU-CD-1 D-82 is provided below.

PALISADES NUCLEAR PLANT- ENGINEERING ANALYSIS CONTINUATION SHEET Cale. No.: EA-ELEC-EDSA-03 Revision 2 Cale.

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LOCA Load Flow With Offsite Power Available Page 110 of 130 SU-CD-1 D-B2 Safety Related Bus Voltage Summary Bus Voltage Limiting Limiting Limiting Time To MCC MCC MCC SLUR Volts for Volts for Volts for Reset Contactor Load MOV Operation 2 1 Bus Vbase Before During After (Sec) Pickup Start2 Bus-1C 2400 0.9666 0.7465 0.9396 4.008 Bus-1 D 2400 0.9663 0.7415 0.9384 4.356 MCC-1 480 0.9711 0.7089 0.9370 0.8771 0.8754 0.8492 MCC-2 480 0.9744 0.7104 0.9399 0.8956 0.8733 0.8300 MCC-21 480 0.9668 0.7349 0.9385 0.8232 0.8670 0.7217 MCC-22 480 0.9594 0.6316 0.9187 0.8138 0.6741 0.6994 MCC-23 480 0.9675 0.7353 0.9391 0.8234 0.6769 0.7230 MCC-24 480 0.9592 0.6311 0.9185 0.8725 0.8353 0.7076 MCC-25 480 0.9748 0.7193 0.9420 0.8869 0.8703 (3) MCC-26 480 0.9768 0.7188 0.9434 0.8992 0.8694 (3) (1) From Calculation EA-ELEC-VOLT-050, Rev. 3 (2) From Calculation EA-ELEC-VOLT-051 , Rev. 1 (3) MOVs on MCC 25 and 26 do not receive an auto start signal associated with a OBA

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LOCA Load Flow With Offsite Power Available Page 111 of 130 SU-CD-1 D-B2 Motor Voltage / Acceleration Time Summary I Motor Terminal Voltage Min Req'd Motor Accel. Terminal 2 Motor Vbase Before During After Time (Sec) Volts 1 P7A-(SW) 2400 0.9644 0.7390 0.9364 0.6708 1 P7B-(SW) 2400 0.9650 0.7444 0.9379 0.6708 P7C-(SW) 2400 0.9663 0.7345 0.9367 1.43 0.6708 P8A-(AF) 2400 0.9666 0.7465 0.9396 off 0.6708 P8C-(AF) 2400 0.9656 0.7406 0.9377 0.6708 1 P52A-(CC) 2400 0.9662 0.7460 0.9392 0.6708 P52B-(CC) 2400 0.9663 0.7398 0.9379 0.74 0.6708 P52C-(CC) 2400 0.9666 0.7448 0.9391 0.74 0.6708 P54A-(CS) 2400 0.9663 0.7385 0.9377 3.41 0.6708 P54B-(CS) 2400 0.9666 0.7448 0.9392 3.29 0.6708 P54C-(CS) 2400 0.9666 0.7465 0.9396 off 0.6708 P55A 480 0.9599 0.6027 0.9116 0.92 0.6708 P55B 480 0.9599 0.5991 0.9091 0.76 0.6708 1 P55C 480 0.9637 0.7304 0.9353 0.6708 P56A 480 0.9744 0.6953 0.9312 2.64 0.6708 P56B 480 0.9711 0.6961 0.9301 2.36 0.6708 P66A-0.9663 0.7392 0.9376 0.6708 (HPSI) 2400 3.12 P66B-0.9666 0.7446 0.9390 0.6708 (HPSI) 2400 2.99 P67 A-(LPSI) 2400 0.9663 0.7387 0.9376 0.99 0.6708 P67B-(LPSI) 2400 0.9666 0.7424 0.9385 1.00 0.6708 (1) Motor Running , No Start (2) 70% for 2300V / 460V rated motors is 0.6708Vpu at 2400V I 480V. 90% for 2300V I 460V rated motors is 0.8625Vpu at 2400V I 480V

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LOCA Load Flow With Offsite Power Available Page 112 of 130 SU-CD-1 D-B2 Branch Current Flow Summary Steady Steady Peak Peak State State From To Branch (PU) (Amps) PU) (Amps) SU1-2 Bus 1C A 11-X04-SUB1-2 0.0777 1852 0.0315 758 SU1-2 Bus 10 A12-X04-SUB1-2 0.1035 2490 0.0393 945 lbase = Sbasef(Vbase X Sqrt 3) = 100 MVA/(2400V X 1.732) = 24 ,056.26 A= 1 pu Data from Append ix S A summary of bus voltage results and motor acceleration times for Scenario SU-CD-1 D-B2 is provided in Appendix B-SU-CD-1 D. Transient voltage plots and motor speed/current graphs are provided in Appendix S. A print out of EDSA results is provided in Attachment 404 B2 . 8.5.5.2.1 Results Discussion for 2400V Buses and Motors During the ECCS motor starting voltage transient, limiting factors for 2400V buses 1C and 1D include voltage recovery to 0.9328 volts (pu) within 6.0 seconds to prevent transfer of the buses to Emergency Diesel Generators (EDGs). Review of the 2400V bus voltages indicates that during the ECCS motor starts, Bus 1C voltage dips to 0.7465 pu and recovers to 0.9396 pu. Bt.ts 1C voltage recovers to the SLUR reset voltage of 0.9328 pu in 4.008 seconds. Similarly, Bus 1D voltage dips to 0.7415 pu and recovers to 0.9384 pu. Bus 1D voltage recovers to the SLUR reset voltage in 4.356 seconds. SLUR reset is achieved . Per assumption 6.0.17, motor starting loadflow is used for voltage results and transient stability is used for time plots. Bus 1C and 1D voltage remains well above the FLU R's actuation curve such that FLUR actuation is not a concern . Voltage recovers to greater than 0.7750 pu well within the time to prevent the actuation of the FLU Rs. All 2400 motors accelerate and achieve 98% of their rated speed within 4 seconds. The longest acceleration time for any of the 2400V motors was 3.41 seconds for the P54A Containment Spray pump. Voltages at the medium voltage (2400V) motor terminals are greater than 70 percent of rated voltage during start and recover to greater than 90 percent of rated. All 2400V motors start and accelerate to at least 0.98 pu speed. 8.5.5.2.2 Results Discussion for 480V Buses and Loads As discussed in section 7.5.2 static inrush loads are modeled for charging pumps P55A/B/C , boric acid pumps P56A/B , MCC 1-MOVs, and MCC 2-MOVs until the voltage recovers to an acceptable level. Starting voltage requirement for these motors are given in Table 8.5.5.2.2 below. Timing to start motors is controlled by event manager scenario B2-Z-iso CD.

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LOCA Load Flow With Offsite Power Available Page113of130 Table 8.5.5.2.2 Starrmg Requiremen ts for Seec I ted 480V Loa ds Motor Vstart - Required Time to Vstart P55A 0.6708 2.005 P55B 0.6708 2.053 P55C running running P56A1 0.8172@ MCC 2 2.477 P56B 1 0.8640 @ MCC 1 3.982 MCC-1-X 1 0.8771 4.165 MCC-2-X 1 0.8956 4.331 (1) From Calculation EA-ELEC-VOLT-050 All 480 motors accelerate and achieve 98% of their rated speed within 3 seconds except as discussed in section 1.3.1. The longest acceleration time for any of the 480V motors was 2.64 seconds for the P-56A. Voltages at the 480V motor terminals and Motor Control Centers recover to required minimum starting voltage as denoted in the table above and recover to greater than 90 percent of rated voltage after acceleration. MCCs 1, 2, 21-26 voltage recovers to 0.9185 per unit or above . Charging pumps recover to 0.9091 per unit or above. Boric acid pumps recover to 0.9301 per unit or above. MCC 24 voltage drops to 0.6311 pu which is less than the required hold-in voltage of 0.6670 pu determined in Analysis Input 4.1.3. The affected motors are V24C; Diesel Generator K6B Room Cooling Fan and V24D; Diesel Generator K6B Room Cooling Fan. If 42-2425 or 42-2435 (ac contactor/starter for V24CN24D) should drop out, the circuit(s) will re-energize when MCC 24 voltage recovers to 0.8725 pu (pick-up) in approximately 3 seconds. Temperature switch contacts TS/1821 or TS/1822 (V24C) and TS/1823 or TS/1820 (V24D) remain closed dependent upon diesel generator room temperature, reference Analysis Input 4.2.8. The maximum required hold-in voltage for the other MCC 24 motors is less than 0.6311 pu and they remain energized during the event. 8.5.5.3 Split Bus Scenario SU-CD-1 D-B4, ECCS Motors Running with Bus 1 E Re-Energized Split bus scenario SU-CD-1 D-B4 is configured with Buses 1C and 1Don SU 1-2 and Bus 1E on SG 1-1. The pre-analysis condition is set up according to Table 7.5.2-3-1D . This scenario is essentially the same as Case B-1 D but with Buses 1C and 1D isolated on SU 1-2 and bus 1E fed via SG 1-1 (scenario 6; A4/B4-1 D). Scenario B4 evaluates the steady state condition after the ECCS motors have started and are running. MOV operation is complete and Bus 1E is re-energized from SG 1-1 (this has negligible voltage impact on SU 1-2 voltage. Loading on the ECCS pumps are set at bounding values (See Appendix D) to envelope any expected mode of operation . MCC loads are at LOCA values as identified in Appendix E. Containment Spray Pump P54C is running. System voltage remains the same at 323.275 kV. The SU 1-2 tap changer is functional and has adjusted to control

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LOCA Load Flow With Offsite Power Available Page114of130 voltage to the previous pre-event voltage of approximately 2380V. The resulting SU 1-2 tap is 1.10. This is the last tap on SU 1-2. SG 1-1 tap is 1.04375, about midway boost tap . SU-CD-1 D-B4 Safety Related Bus Voltage Summary Limiting Limiting B4 MCC MCC Limiting (SU1-2 LTC Time To Volts for Volts for MCC On) SLUR Reset Contactor Load Volts for 1 2 Bus Vbase Steady State (Sec) Pickup Operation MOV Start2 Bus-1C 2400 0.9908 No Drop Out Bus-1D 2400 0.9896 No Drop Out MCC-1 480 0.9917 0.8771 0.8754 0.8492 MCC-2 480 0.9938 0.8956 0.8733 0.8300 MCC-21 480 0.9917 0.8232 0.8670 0.7217 MCC-22 480 0.9771 0.8138 0.6741 0.6994 MCC-23 480 0.9917 0.8234 0.6769 0.7230 MCC-24 480 0.9750 0.8725 0.8353 0.7076 MCC-25 480 0.9958 0.8869 0.8703 0.7143 MCC-26 480 0.9958 0.8992 0.8694 0.7213 (1) From Calculation EA-ELEC-VOLT-050 (2) From Calculation EA-ELEC-VOLT-051

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LOCA Load Flow With Offsite Power Available Page 115 of 130 Transformer Loading - Case SU-CD-1 D-B4 Capacity Scenario B4 (L TC On) Transformer (KVA) Loading (KVA) Loading% SG1-1 10500 1347.3 11 SU1-2 10600 7409.1 58 SP-11 750 337.7 45 SP-12 750 569.0 76 1 SP-13 750 <> 366.8(88.2) 49 SP-14 750 543.7 72 SP-15 750 0 0 SP-16 750 501 .9 67 SP-19 750 438.9 59 SP-20 750 373.7 50 SP-200 750 248.5 33 (1) 150A (High side) load limit per SOP-30 Branch Current Flow - Case SU-CD-1 D-B4 Scenario B4 From Bus To Bus Branch Code (L TC On) (Amps) SU-1-2-LS 152-106-LS (Bus 1C) A11-X04-SUB1-2 788 SU-1-2-LS 152-202-LS (Bus 1 D) A12-X04-SUB1-2 903 A 14-(SG Bus) 152-302-LS (Bus 1 E) A13-A14-SUB1 -2 324 A summary of bus voltage results for Scenario SU-CD-1 D-B4 is provided in Appendix B-SU-CD-1 D and Attachment 404-B4. A print out of EDSA results for transformer loading, and branch current flows are provided in Attachment 404-B4. Voltages on 2400V buses 1C and 1Dare greater than 0.9896 pu and do not challenge the second level undervoltage relays Voltages on all of the safety related buses are 0.9750 pu or above and adequate for operation of all loads . Review of Appendix B-SU-CD-1 D and 04-B4 (bus flow portion indicated that all relevant running motors have terminal voltages in excess of 90 percent, or 0.8625 pu at 480V base . The multiple motors that have terminal voltages less than rated are cooling tower loads that would be tripped and are not relevant to this case.

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LOCA Load Flow With Offsite Power Available Page 116 of 130 Steady state transformer loading is within the rating of all transformers. Again it is noted that loading for this analysis is conservatively heavy to produce conservative voltages. Additional analysis specific to transformer loading may be warranted. The resulting current flows are high and exceed the emergency (LOCA) condition continuous ratings specified in SOP-30, Section 4.3. The feeder to 2400V Bus 1C is supplying 789A and is within the SOP-30 LOCA rating (795A). The feeder to 2400V Bus 1D is supplying 903A and exceeds the SOP-30 LOCA rating (81 OA) by 12%. It should be noted that in an effort to achieve a bounding analysis, system load is inflated and the resulting current flow is not necessarily representative of expected actual current flow. However, operator action to reduce the unnecessary load would be required if necessary as is already incorporated into the SOP (Section 4.3.d). Further, the higher loads are a short term affect. The impact of the higher currents is an elevated temperature which may result in a reduction of cable life. SOP-030 already includes load monitoring requirements to address the cable loading issue. 8.5.5.4 Split Bus Scenario SU-CD-1 D-B4.1, ECCS Motors Running, Bus 1E Energized, LTC OFF, CS Start Split Bus Scenario 84.1 is different than the normal configuration Scenario 84.1 in that the load tap changer is off. Split Bus Scenario 84.1 evaluates the condition after the ECCS motors have started and are running . MOV operation is complete and Bus 1Eis re-energized and Containment Spray Pump P54C is starting . Loading on the ECCS pumps are set at bounding values (See Appendix D) to envelope any expected mode of operation. MCC loads are at LOCA values as identified in Appendix E. The simultaneous starting of P54C and re-energization of Bus 1E has negligible significance in this line-up. This is because Bus 1E is separated from Buses 1C and 1D by different transformer feeds. The electrical connection is back in the switchyard and the strength of the 345 kV system overrides any voltage drop effect on 2400V Buses 1C and 1D when Bus 1E is re-energized. This scenario is slightly different than other A/84.1 scenarios because Containment Spray Pump P45C is started 15 seconds after event initiation and the tap has not changed taps yet. Since the 15 seconds start time is a critical characteristic for this scenario, no tap change is accounted for (similar to other scenarios) . The SU1-2 transformer auto-tap changer has not operated from the 82 .case. Bus 1E is re-energized via SG 1-1 and Containment Spray Pump P54C starts. Therefore the tap positions for SU 1-2 and SG 1-1 are the same as in scenario SU-CD 82; SU 1-2 tap = 1.0375 and SG 1-1 tap = 1.00625. The grid voltage is 323 .275 kV. Scenario "6 - A4/84 - 1D" is used with alteration to P54C starting. The motor starting case using the Paladin Advanced Motor Starting routine starts P54C with the conditions above. The transient stability case uses scenario "6 - A4/84 - 1 D" and Case Study "11 - 84 .1_iso_CD." Both Bus 1E is energized to SG 1-1 via breaker 152-302 and Containment Spray Pump P54C is started at 1.0 seconds.

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LOCA Load Flow With Offsite Power Available Page117of130 A final load flow is not run since the transformer loading and branch current flows would be similar to those values provided in scenario SU-CD-1 D-B4. The only difference is the tap on SU 1-2 and SG 1-1 . The branch currents are expected to be slightly larger in this scenario due to the effect of lower voltage on constant power loads until transformer tap changer completes its operation. A summary of bus voltage results for Scenario SU-CD-1 D-B4.1 is provided in Appendix B-SU-CD-1 D. A print out of EDSA results for is provided in Attachment 404-B4.1. Plots are provided in Appendix U.

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LOCA Load Flow With Offsite Power Available Page 118 of 130 SU-CD-1D-B4.1 Safety Related Bus Voltage Summary Time Limiting B4.1 Motor Start To MCC Limiting (SU1-2 LTC Off) SLUR Volts for Volts for Limiting Reset Contactor Load Volts for 1 Ops2,3 23 Bus Vbase Before During After (Sec) Pickup Start

Bus-1C 2400 0.9373 0.9099 0.9352 2.60 Bus-10 2400 0.9361 0.9107 0.9342 2.83 MCC-1 480 0.9358 0.9071 0.9335 0.8771 0.8754 0.8492 MCC-2 480 0.9381 0.9118 0.9362 0.8956 0.8733 0.8300 MCC-21 480 0.9362 0.9074 0.9339 0.8232 0.8670 0.7217 MCC-22 480 0.9190 0.8919 0.9169 0.8138 0.6741 0.6994 MCC-23 480 0.9368 0.9080 0.9345 0.8234 0.6769 0.7230 MCC-24 480 0.9188 0.8916 0.9167 0.8725 0.8353 0.7076 MCC-25 480 0.9394 0.9108 0.9372 0.8869 0.8703 0.7143 MCC-26 480 0.9395 0.9131 0.9375 0.8992 0.8694 0.7213 P7A-(SW) 0.9341 0.9087 0.9322 0.8625 0.6708 P7B-(SW) 0.9356 0.9081 0.9335 0.8625 0.6708 P7C-(SW) 0.9340 0.9086 0.9321 0.8625 0.6708 P8A-(AF) 0.9373 0.9099 0.9352 0.8625 0.6708 P8C-(AF) 0.9354 0.9100 0.9335 0.8625 0.6708 P52A-(CC) 0.9369 0.9094 0.9347 0.8625 0.6708 P52B-(CC) 0.9356 0.9102 0.9337 0.8625 0.6708 P52C-(CC) 0.9369 0.9094 0.9347 0.8625 0.6708 P54A-(CS) 0.9353 0.9100 0.9334 0.8625 0.6708 P54B-(CS) 0.9370 0.9095 0.9348 0.8625 0.6708 P54C-(CS) 0.9373 0.9079 0.9348 0.8625 0.6708 P55A 0.9152 0.8879 0.9131 0.8625 0.6708 P55B 0.9150 0.8877 0.9129 0.8625 0.6708 P55C 0.9329 0.9040 0.9306 0.8625 0.6708 P56A 0.9327 0.9062 0.9307 0.8625 0.6708 P56B 0.9313 0.9025 0.9290 0.8625 0.6708 P66A-(HPSI) 0.9352 0.9098 0.9333 0.8625 0.6708

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LOCA Load Flow With Offsite Power Available Page119of130 SU-CD-10-84.1 Safety Related Bus Voltage Summary Time Limiting 84.1 Motor Start To MCC Limiting (SU1-2 LTC Off) SLUR Volts for Volts for Limiting Reset Contactor Load Volts for Bus Vbase Before During After (Sec) Pickup 1 Ops2,3 Start2*3 P66B-(HPSI) 0.9367 0.9092 0.9345 0.8625 0.6708 P67A-(LPSI) 0.9353 0.9099 0.9334 0.8625 0.6708 P67B-(LPSI) 0.9361 0.9086 0.9339 0.8625 0.6708 V1A 0.9080 0.8805 0.9059 0.8625 0.6708 V2A 0.9085 0.8810 0.9064 0.8625 0.6708 V3A 0.9060 0.8784 0.9038 0.8625 0.6708 V4A 0.9369 0.9080 0.9346 0.8625 0.6708 (1) From Calculation EA-ELEC-VOLT-050 (2) From Calculation EA-ELEC-VOL T-051 for MCCs. (3) 70% for 2300V and 460V rated motors is 0.6708V pu at 2400V or 480V base, 90% for 2300V and 460V rated motors is 0.8625V pu at 2400V or 480V base Voltage on 2400V buses 1C and 1D dip below the SLUR drop out point of 0.9280 per unit. During the P54C motor start all bus voltages remain above 0.89 pu and all motor terminal voltages remain above 90% of rated (.8625V pu at 480V base) except for some cooling tower loads that are not relevant to this scenario. Per Appendix U, the transient stability shows pump motor P54C starts and accelerates to within 0.98 percent of rated speed in 2.420 seconds. 8.5.5.5 Split Bus Scenario SU-CD-1 D-82.1, ECCS Motor Start, Delayed P54A/B Start Concurrent w/ SLUR Reset This scenario evaluates the unique condition of starting Containment Spray Pumps P54A and P54B just as 2400V bus 1C and 1D voltage is recovering and the SLURs are about to reset. The concern is a delay in SLUR reset due to the two motors starting such that the SLUR time delay expires and the safety related buses are transferred to the emergency diesel generators. Containment Spray pumps receive start signals from the CHP logic whose actuation is variable with respect to time and is dependent on the LOCA and other factors . This event occurs just after the ECCS motors start in response to the SIS while those motors are accelerating and voltage is recovering . To achieve the most conservative results with respect to voltage and SLUR reset this scenario starts the two Containment Spray Pumps just prior to either 2400V bus voltage reaching 0.9328V pu. This was determined through multiple runs of the EDSA software similar to the B2 scenario, the SU1-2 transformer tap remains set at the pre-event position of 1.0375 and grid voltage is 97% of

PALISADES NUCLEAR PLANT- ENGINEERING ANALYSIS CONTINUATION SHEET Cale. No. : EA-ELEC-EDSA-03 Revision 2 Cale.

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LOCA Load Flow With Offsite Power Available Page 120 of 130 332 .750kV = 322. 768kV. This scenario addresses the concerns of Condition Report AR01018366 . Since the primary concern of this scenario is achieving SLUR reset and not to evaluate the entire distribution system only sufficient data is gathered to demonstrate reset. To implement the simulation , all Scenario B2 loads except P54A, B, and Care simulated starting and the time to reset determined to be 3.762 seconds. Also , starting initiation times for selected 480V motors are shown in Table 8.5.5.5 (No plots provided for determining these values) . These values (including the 1 second simulation start delay) are input to the event manager (Case Study 10 B2.1-Z_iso_CD) for the starting time for the P54A and B pumps and 480V motors. The result of the simulation with all Scenario B2-1 D loads starting - with P54A and B being delayed - are provided in Appendix T for the bus voltage profile and P54A and P54B motor speed/current graphs. From Appendix T, Bus 1C and 1D voltage dips to a min imum of 0.7730 pu during the ECCS block start of all motors except P54A, Band C. Voltage recovers to 0.9328 pu on Bus 1Cat 2.758 seconds and 0.9313 pu on Bus1 D at 2.761 seconds after the ECCS motor start. It is noted that a later start in the event manager would result in exceeding the SLUR reset prior to starting the CS pumps. It is noted that the specified time intervals are approaching the EDSA software integration time step limitations, therefore. Some slight variations in time values are introduced). At this time , 2.762 seconds after ECCS motor start, both Containment Spray pumps P54A and Bare started and voltage dips to 0.8876/0 .8860 pu on 2400V buses 1C and 1D, and 0.8826/0.8856 pu at Containment Spray pump P54A/P54B motor term inals. Ultimately voltage on Bus 1C recovers to 0.9328 (SLUR Reset) after 5.669 seconds total elapsed time . Voltage on Bus 1D recovers to 0.9328 (SLUR Reset) after 5.817 seconds total elapsed time. Based on these results it is concluded that the second level undervoltage relays achieve reset prior to expiration of the 6.0 second time delay and subsequent transfer of the 2400V buses to the EDGs . It is noted that the minimum voltage at the Containment Spray pump motor terminals is 0.8826 pu which is sufficient to ensure motor start and acceleration to rated speed . Pump motor P54A achieves rated speed in approximately 2.8 seconds (6 .542-3 .762=2 .780) . Pump motor P54B achieves rated speed in approximately 2.6 seconds (6 .349-3.762=2.587) .

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LOCA Load Flow With Offsite Power Ava ilable Page 121 of 130 Table 8.5.5.5 Sta rt*mg Requiremen ts for Seec I ted 480V Loa d s Motor Vstart - Required Time to Vstart P55A 0.6708 1.690 P55B 0.6708 1.733 P55C . running runninQ P56A 1 0.8172@ MCC 2 1.827 P56B 1 0.8640 @ MCC 1 3.323 MCC-1-X 1 0.8771 3.538 MCC-2-X 1 0.8956 3.653 (1) From Calculation EA-ELEC-VOLT-050

1. CONCLUSIONS & CONSTRAINTS The following conclusions are based on the Objectives and Acceptance Criteria described above and the computational results presented in Section 8.0. The results ind icate that all acceptance criteria are met with the 2400V buses powered from the SG1-2 and SU1-2 transformers for all anticipated or allowed grid voltage conditions.

Specifically,

All motors required to support LOCA mitigation have starting times within allowable limits
All motors required to support LOCA mitigation have at least 70 percent rated motor volts for starting and at least 90 percent rated motor volts for steady state operation .
The first level undervoltage relay trip point is not challenged
The second level undervoltage relays reset point is reached prior to separation of the buses from the offsite power system
MOVs have adequate voltages to perform thei r safety function
Transformer loading is within the transformer's ratings Constraints
Bus 1C and 1D minimum voltage during normal operating conditions is 2350V to assure adequate voltage margin is maintained
Bus 1C and 1D minimum voltage during any split bus operating condition is 2383V to assure adequate voltage margin is maintained 9.0 APPENDICES AND ATTACHMENTS The following Appendices contain documentation developed as part of this analysis and are included as part of the computations . The General Information Attachments contain documents that are prepared by others and are relied upon in preparation of this calculation

PALISADES NUCLEAR PLANT- ENGINEERING ANALYSIS CONTINUATION SHEET Cale. No.: EA-ELEC-EDSA-03 Revision 2 Cale.

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LOCA Load Flow With Offsite Power Available Page 122 of 130 and are provided for convenience . Printouts of EDSA input data for the model and EDSA analysis results for each scenario are provided in Attachments 100 through 703 9.1 APPENDICES Appendix A-1 C Scenario A-1C Case Results Summary Appendix A-1 D Scenario A-1 D Case Results Summary Appendix B-1 C Scenario B-1 C Case Results Summary Appendix B-1 D Scenario B-1 D Case Results Summary Appendix B-SU-1 D-2355 Scena rio SU -1D-2355 Case Results Summary Appendix B-SU-CD-1 D Scenario SU-CD-1 D Case Results Summary Appendix B-SU-CD-1 C Scenario SU-CD-1 C Case Results Summary Appendix C Load/Breaker Setting Sheet Appendix D ECCS Motors LOCA Load Demand Factors Appendix E MCC Loads LOCA Demand/Diversity Factors Appendix F MOV Composite Load Development Appendix G Transformer Load Tap Changer Settings Appendix H Deleted Appendix 1-1 D Scenario A2 -1 D Bus Voltage and Motor Speed/Current vs . Time Plot Appendix 1-1 C Scenario A2-1 C Bus Voltage and Motor Speed/Current vs . Time Plot Appendix J Deleted Appendix K-1 D Scenario B2-1 D Bus Voltage and Motor Speed/Current vs. Time Plot Appendix K-1 C Scenario B2-1 C Bus Voltage and Motor Speed/Current vs . Time Plot Appendix L Deleted Appendix M-1 Da-SU Scenario B2.1 -1 D Bus Voltage and Motor Speed/Current vs . Time Plot

PALISADES NUCLEAR PLANT - ENGINEERING ANALYSIS CONTINUATION SHEET Cale. No.: EA-ELEC-EDSA-03 Revision 2 Cale.

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LOCA Load Flow With Offsite Power Available Page 123 of 130 Appendix M-1Ca-SU Scenario B2 .1-1 C Bus Voltage and Motor Speed/Current vs . Time Plot Appendix N-1 D Scenario A4 .1-1 D Bus Voltage and Motor Speed/Current vs. Time Plot Appendix N-1C Scenario A4 .1-1 C Bus Voltage and Motor Speed/Current vs . Time Plot Appendix 0 -1 D Scenario B4.1 -1 D Bus Voltage and Motor Speed/Current vs. Time Plot Appendix 0-1 C Scenario B4.1-1C Bus Voltage and Motor Speed/Current vs . Time Plot Appendix P Deleted Appendix Q Transient Analysis Event Manager Screen Prints for all Scenarios Append ix R Scenario SU-1 D-2355 Bus Voltage and Motor Speed/Current vs. Time Plot Appendix S Scenario SU-CD-1 D Bus Voltage and Motor Speed/Current vs . Time Plot Appendix T Scenario SU-CD-1 D-2 .1 Bus Voltage and Motor Speed/Current vs . Time Plot Appendix U Scenario SU-CD-1 D-4.1 Bus Voltage and Motor Speed/Current vs. Time Plot Appendix V Scenario SU-CD-1 C Bus Voltage and Motor Speed/Current vs . Time Plot Appendix W Scenario SU-CD-1 C-2 .1 Bus Voltage and Motor Speed/Current vs . Time Plot Appendix X Scenario SU-CD-1 C-4.1 Bus Voltage and Motor Speed/Current vs . Time Plot 9.2 GENERAL INFORMATION ATTACHMENTS EA-ELEC-VOL T-033 SLUR Setpoint Diagram Memo (Email) Kurt LaFrance to Thomas Sarver, Dated Oct. 12, 2006 Memo (Email) Michael J. Case to K. Steven West, Dated Dec. 12, 2007 Normal Operating 2400V Motors . Entergy - Palisades Operations Sept, 24 , 2008 .

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LOCA Load Flow With Offsite Power Ava ilable Page 124 of 130 9.3 COMPUTER ANALYSIS PRINTOUTS OOA Data Structure Analyzer Report and Error Checking Report OOB Input Data Echo Print 00-1 D Series 00-1 D Results ; Case A , LOCA with 2400 V Buses C and Don SG1-1 , Scenario A 1-1 D, Adjusted Normal Load Flow (Pre-analysis system conditioning) , Maximum Bus 1D Conditions 01 -10 Results ; Case A , LOCAwith 2400 V Buses C and Don SG1-1 , Scenario A2-1 D, ECCS and MOV Dynamic Motor Starting , Load Shed Complete (Tap Changer Off) ), Maximum Bus 1 D Conditions 02 DELETED 03-1 D Results; Case A, LOCA with 2400 V Buses C and Don SG1-1 , Scenario A4-1 D, ECCS Motors Running with Bus 1 E Re-Energized , P54C Running (Tap Changer On) , Maximum Bus 1 D Conditions 03-1 Da Branch Current Flows , Branch Data , Transformer & Line Voltage Regulator Loading , Bus Flows for Attachment 203-1 D 03-1Db Results; Case A, LOCA with 2400 V Buses C and Don SG1-1, Scenario A4 .1-1 D, ECCS Motors Running with Bus .1 E Off, P54C Off (Tap Changer On) , Pre-event loadflow, Maximum Bus 1 D Conditions 03-1 De Resu Its; Case A, LOCA with 2400 V Buses C and D on SG 1-1, Scenario A4.1-1D , ECCS Motors Running then Bus 1E Re-energized and P54C Starting Simultaneously (Tap Changer On) , , Maximum Bus 1D Conditions 00-1 C Series 00-1 C Results; Case A, LOCA with 2400 V Buses C and Don SG1-1, Scenario A1-1C , Adjusted Normal Load Flow (Pre-analysis system conditioning), Maximum Bus 1C Conditions 01-1 C Results ; Case A , LOCA with 2400 V Buses C and Don SG1-1, Scenario A2-1 C, ECCS and MOV Dynamic Motor Starting, Load Shed Complete (Tap Changer Off)) , Maximum Bus 1C Conditions 03-1C Results; Case A , LOCAwith 2400 V Buses C and Don SG1-1, Scenario A4-1 C, ECCS Motors Running with Bus 1E Re-Energized , P54C Running (Tap Changer On) , Maximum Bus 1C Conditions _J

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LOCA Load Flow With Offsite Power Available Page 125 of 130 03-1Ca Branch Current Flows, Branch Data, Transformer & Line Voltage Regulator Loading , Bus Flows for Attachment 203-1 C 03-1Cb Results ; Case A, LOCA with 2400 V Buses C and Don SG1-1 , Scenario A4.1-1 C, ECCS Motors Runn ing with Bus 1E Off, P54C Off (Tap Changer On) , Pre-event loadflow , Maximum Bus 1C Conditions 03-1Cc Results ; Case A, LOCA with 2400 V Buses C and Don SG1-1 , Scenario A4 .1-1 C, ECCS Motors Runn ing then Bus 1E Re-energized and P54C Starting Simultaneously (Tap Changer On) , , Maximum Bus 1C Cond itions 00-1 D Series 00-1 D Results ; Case B, LOCA with 2400 V Buses C and Don SU1-2 , Scenario B1 -1 D, Adjusted Normal Load Flow (Pre-analysis system conditioning) , Maximum Bus 1D Conditions 01-1D Results ; Case B, LOCAwith 2400 V Buses C and Don SU1-2 , Scenario B2-1 D, ECCS and MOV Dynamic Motor Starting , Load Shed Complete (Tap Changer Off) , Maximum Bus 1D Conditions 03-1 D Results ; Case B, LOCA with 2400 V Buses C and Don SU1-2 , Scenario B4-1 D, ECCS Motors Running with Bus 1E Re-Energized , P54C Running (Tap Changer On) , Maximum Bus 1D Conditions 03-1Da Branch Current Flows, Branch Data , Transformer & Line Voltage Regulator Loading , Bus Flows for Attachment 303-1 D 03-1Db Results; Case B, LOCA with 2400 V Buses C and Don SU1-2 , Scenario 84.1-1 D, ECCS Motors Running with Bus 1E Off, P54C Off (Tap Changer On) , Pre-event loadflow, Maximum Bus 1D Conditions 03-1Dc Results ; Case B, LOCA with 2400 V Buses C and Don SU1-2 , Scenario 84 .1-1 D, ECCS Motors Running then Bus 1E Re-Energized and P54C Starting Simultaneously (Tap Changer On), Maximum Bus 1D Conditions 00-1 C Series 00-1C Results ; Case 8, LOCA with 2400 V Buses C and Don SU1-2 , Scenario 81-1 C, Adjusted Normal Load Flow (Pre-analysis system conditioning) , Maximum Bus 1C Conditions

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LOCA Load Flow With Offsite Power Available Page 126 of 130 01-1C Results ; Case B, LOCA with 2400 V Buses C and Don SU1-2, Scenario B2-1C , ECCS and MOV Dynamic Motor Starting , Load Shed Complete (Tap Changer Off) , Maximum Bus 1C Conditions 03-1 C Results ; Case B, LOCA with 2400 V Buses C and Don SU1-2 , Scenario B4-1 C, ECCS Motors Running with Bus 1E Re-Energized , P54C Running (Tap Changer On) , Maximum Bus 1C Conditions 03-1Ca Branch Current Flows , Branch Data, Transformer & Line Voltage Regulator Loading , Bus Flows for Attachment 303-1 C 03-1Cb Results ; Case B, LOCA with 2400 V Buses C and Don SU1-2, Scenario 84.1-1 C, ECCS Motors Running with Bus 1E Off, P54C Off (Tap Changer On) , Pre-event loadflow, Maximum Bus 1C Conditions 03-1Cc Results ; Case B, LOCA with 2400 V Buses C and Don SU1-2 , Scenario B4.1-1 C, ECCS Motors Running then Bus 1E Re-Energized and P54C Starting Simultaneously (Tap Changer On), Maximum Bus 1C Conditions 00 Split Bus Series 00 81 Results; Special Case SU-1C-B1 , LOCA with 2400 V Bus 1C on SU1-2, Preconditioned with Bus 1C isolated on SU-1-2 ; Buses 1D and 1E on SG1-1 . Adjusted Normal Load Flow (Pre-analysis system conditioning) , Maximum Bus 1C Conditions, Vsys=332 .9kV. 00 82 Results ; Special Case SU-1 C-B2 , LOCA with 2400 V Bus 1C isolated on SU-1-2 ; Buses 1D and 1Eon SG1-1 . LOCA load , All ECCS and 480V Dynamic Motor Starting , Load Shed Complete (including bus 1 E) , Tap Changer Off, Vsys=322 .913kV. 01 81 Results; Special Case SU-1 D-B1 , LOCA with 2400 V Bus 1 Don SU1-2, Preconditioned with Bus 1D isolated on SU-1-2; Buses 1C and 1 E on SG1-1 . Adjusted Normal Load Flow (Pre-analysis system conditioning) , Maximum Bus 1D Conditions , Vsys=334kV. 01 82 Results; Special Case SU-1 D-B2, LOCA with 2400 V Bus D isolated on SU-1-2; Buses 1C and 1E on SG1-1 . LOCA load, All ECCS and 480V Dynamic Motor Starting , Load Shed Complete (including bus 1E) , Tap Changer Off, Vsys=323.980kV. 02 81 Results ; Special Case SU-1 D-2355-B1 , LOCA with 2400 V Bus 1Don SU1-2, Preconditioned with Bus 10 isolated on SU-1-2; Buses 1C and 1Eon SG1-1. Adjusted Normal Load Flow (Pre-analysis system conditioning) , Maximum Bus 1D Conditions, Vsys=332.7kV, 1 D=2355V.

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LOCA Load Flow With Offsite Power Available Page 127 of 130 02 B2 Results; Special Case SU-1 D-B2 , LOCA with 2400 V Bus D isolated on SU-1-2 ; Buses 1C and 1E on SG1-1 . LOCA load , All ECCS and 480V Dynamic Motor Starting , Load Shed Complete (including bus 1E) , Tap Changer Off, 10=2355V, Vsys=322 .719kV. 03 Not used . 04 B1 Results; Special Case SU-CD-1 D-B1 , LOCA with 2400 V Buses 1C and 1D on SU 1-2, Preconditioned with Buses 1C and 1D isolated on SU-1-2 ; Bus 1 Eon SG1-1 . Adjusted Normal Load Flow (Pre-analysis system conditioning), Maximum Bus 1D Conditions 04 B2 Results; Special Case SU-CD-1 D-B2 , LOCA with 2400 V Buses 1C and 10 isolated on SU-1-2; Bus 1E on SG1-1 . LOCA load , All ECCS and 480V Dynamic Motor Starting , Load Shed Complete (including bus 1E) , Tap Changer Off 04 B4 Results; Special Case SU-CD-1 D-B4, LOCA with 2400 V Buses 1C and 10 isolated on SU1-2 , Bus 1E on SG 1-1, ECCS Motors Running with Bus 1E Re-Energized , P54C Running (Tap Changer On) , Maximum Bus 1D Conditions 04 B4 .1 Results; Special Case SU-CD-1 D-B4 .1, LOCA with 2400 V Buses 1C and 1D isolated on SU1-2 , ECCS Motors Running. Bus 1E Re-Energized via SG 1-1 & P54C Start Simultaneously (Tap Changer Off) , Maximum Bus 1D Conditions 05 B1 Results; Special Case SU-CD-1 C-B1 , LOCA with 2400 V Buses 1C and 1D on SU 1-2, Preconditioned with Buses 1C and 1D isolated on SU-1-2; Bus 1 Eon SG1-1 . Adjusted Normal Load Flow (Pre-analysis system conditioning), Maximum Bus 1C Conditions 05 B2 Results; Special Case SU-CD-1C-B2, LOCA with 2400 V Buses 1C and 1D isolated on SU-1-2 ; Bus 1Eon SG1-1 . LOCA load , All ECCS and 480V Dynamic Motor Starting , Load Shed Complete (including bus 1E) , Tap Changer Off 05 B4 Results; Special Case SU-C0-1 C-B4, LOCA with 2400 V Buses 1C and 10 isolated on SU1-2 , Bus 1E on SG 1-1 , ECCS Motors Running with Bus 1E Re-Energized, P54C Running (Tap Changer On) , Maximum Bus 1C Conditions 05 B4.1 Results; Special Case SU-C0-1 C-B4.1, LOCA with 2400 V Buses 1C and 1D isolated on SU1-2, ECCS Motors Running . Bus 1E Re-Energized via SG 1-1 & P54C Start Simultaneously (Tap Changer Off), Maximum Bus 1C Conditions

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LOCA Load Flow With Offsite Power Available Page 128 of 130 00 Grid Voltage Sensitivity Analysis Series 00 Results; Sensitivity Analysis Case B, LOCA with 2400 V Buses C and Don SU1-2 , Scenario B1 , Adjusted Normal Load Flow (Pre-analysis system conditioning)-light load , high Vsys=369-358 kV 01 Results; Sensitivity Analysis Case B, LOCA with 2400 V Buses C and Don SU1-2 , Scenario B2 , ECCS and MOV Dynamic Motor Starting , Load Shed Complete (Tap Changer Off)-light load , high Vsys=369-358 kV 02 Results ; Sensitivity Analysis Case B, LOCA with 2400 V Buses C and Don SU1-2 , Scenario B1 , Adjusted Normal Load Flow (Pre-analysis system conditioning)-heavy load , high Vsys=369-358 kV 03 Results; Sensitivity Analysis Case B, LOCA with 2400 V Buses C and Don SU1-2 , Scenario B2 , ECCS and MOV Dynamic Motor Starting , Load Shed Complete (Tap Changer Off)-heavy load , high Vsys=369-358 kV 04 Results; Sensitivity Analysis Case B, LOCA with 2400 V Buses C and Don SU1-2 , Scenario B1 , Adjusted Normal Load Flow (Pre-analysis system conditioning)-heavy load , low Vsys=334-324 kV 05 Results; Sensitivity Analysis Case B, LOCA with 2400 V Buses C and Don SU1-2 , Scenario B2 , ECCS and MOV Dynamic Motor Starting , Load Shed Complete (Tap Changer Off)-heavy load , low Vsys=334-324 kV 06 Results ; Sensitivity Analysis Case B, LOCA with 2400 V Buses C and Don SU1-2 , Scenario B1 , Adjusted Normal Load Flow (Pre-analysis system conditioning)-light load , low Vsys=334-324 kV 07 Results ; Sensitivity Analysis Case B, LOCA with 2400 V Buses C and Don SU1-2 , Scenario B2 , ECCS and MOV Dynamic Motor Starting , Load Shed Complete (Tap Changer Off)-light load , low Vsys=334-324 kV

PALISADES NUCLEAR PLANT - ENGINEERING ANALYSIS CONTINUATION SHEET Cale. No.: EA-ELEC-EDSA-03 Revision 2 Cale.

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LOCA Load Flow With Offsite Power Available Page 129 of 130 00 2400V Sensitivity Analysis Series 02 B1 Results; Sensitivity Analysis , 2350V Case B, LOCA with 2400 V Buses C and Don SU1-2 , Scenario B1 , Adjusted Normal Load Flow (Pre-analysis system conditioning) ,-heavy load , low Vsys=345-334kV, 1C 02a B1 Results ; Sensitivity Analysis , 2350V Case B, LOCA with 2400 V Buses C and Don SU1-2 , Scenario B1 , Adjusted Normal Load Flow (Pre-analysis system conditioning) ,-heavy load , low Vsys=345-334kV, 10 02b B1 Results; Sensitivity Analysis , 2350V Case B, LOCA with 2400 V Buses C and Don SU1-2 , Scenario B1 , Adjusted Normal Load Flow (Pre-analysis system conditioning) ,-heavy load, low Vsys=345-334kV, 1C alternate 03 B2 Results; Sensitivity Analysis , 2350V Case B, LOCA with 2400 V Buses C and Don SU1-2 , Scenario B2, ECCS and MOV Dynamic Motor Starting , Load Shed Complete (Tap Changer Off) , Vsys=328 .8195kV 03a B2 Results ; Sensitivity Analysis , 2350V Case B, LOCA with 2400 V Buses C and Don SU1-2 , Scenario B2 , ECCS and MOV Dynamic Motor Starting , Load Shed Complete (Tap Changer Off) , Vsys=328 .8195kV, alternate 03a B2 Zload edsa05 Results ; Static Load Motor Start Model run in EDSA 2005 R2 (Motor Starting Program V4.10.00) 03a b2-2400-Z-match to edsa05test Results: Motor Starting Program V4.35 .00 run in DesignBase 4 to match the run in EDSA 2005 R2 (Motor Starting Program V4 .10.00) 03a MCC1-2-X B2 Results; Sensitivity Analysis , 2350V Case B, LOCA with 2400 V Buses C and Don SU1-2, Scenario B2 , ECCS and MOV Dynamic Motor Starting , Load Shed Complete (Tap Changer Off) , Vsys=328.8195kV , Zloads on P55A/B & P56A/B 03a P55A B2 Results; Sensitivity Analysis , 2350V Case B, LOCA with 2400 V Buses C and Don SU1-2, Scenario B2, ECCS and MOV Dynamic Motor Starting , Load Shed Complete (Tap Changer Off}, Vsys=328 .8195kV, Zloads on MCC-1-X & MCC-2-X 03a P55A-B B2

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LOCA Load Flow With Offsite Power Available Page 130 of 130 Results; Sensitivity Analysis , 2350V Case B, LOCA with 2400 V Buses C and D on SU 1-2, Scenario B2, ECCS and MOV Dynamic Motor Starting, Load Shed Complete (Tap Changer Off), Vsys=328.8195kV, Zloads on P55A/B & P56A/B 03a P55B B2 Results ; Sensitivity Analysis , 2350V Case B, LOCA with 2400 V Buses C and D on SU 1-2, Scenario B2, ECCS and MOV Dynamic Motor Starting , Load Shed Complete (Tap Changer Off) , Vsys=328 .8195kV, Zloads on P55B 03b B2 Results; Sensitivity Analysis , 2350V Case B, LOCA with 2400 V Buses C and Don SU1-2, Scenario B2 , ECCS and MOV Dynamic Motor Starting , Load Shed Complete (Tap Changer Off) , Vsys=328.8195kV, P55C

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1C via SG 1-1 Appendix 1-lC Voltage(PU) 0.950

                                            .J-------- -              Bus-1C 5' 0.900 c..

QI en ~ 333, 0.933]

 ~ 0.850 g

0.800 0.000 2.000 4.000 6.000 8.000 Time in Seconds Voltage(PU) 0.950

                                            ..J-------- -             Bus-10 5' 0.900 c..

QI [4.389 , 0.93~ en

  ~ 0.850 0

0.800 0.000 2.000 4.000 6.000 8.000 Time in Seconds Voltage(PU)

 -     0.900 c..

a, en

0

  > 0.800 0.000         2.000        4 .000          6.000  8.000 Time in Seconds L: \ Elec trical Ana lys is\EA-ELEC-EDSA-0 3 R2 LO CA w-offsite pw r (EC42422)\ Elect ronic fil es \ App 1-l C Plots-A2 -Z.docx Page 1 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1C via SG 1-1 Appendix I-1C Voltage(PU) 0.900 5' a.. Q) Cl

g 0.800 0.000 2.000 4.000 6.000 8.000 Time in Seconds Voltage(PU) 5 0.900 a.. Q) Cl

0

>   0.800 0.000       2.000      4.000      6.000       8.000 Time in Seconds Voltage(PU) 5'  0.900 a..

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>   0.800 0.000       2.000      4.000      6.000       8.000 Time in Seconds L:\Electrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic files\App 1-lC Plots-A2-Z.docx Page 2 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1C via SG 1-1 Appendix 1-lC Voltage(PU) 0.900 Q. Q) Cl

g 0.800 0.000 2.000 4.000 6.000 8.000 Time in Seconds Voltage(PU) 0.900 5' Q. a, Cl 19 g 0.800 0.000 2.000 4.000 6.000 8.000 Time in Seconds Voltage(PU)

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Q) Cl 19 0

 >   0.800 0.000       2.000      4 .000     6.000       8.000 Time in Seconds L:\Electrical Analys is\EA-ELEC-EDSA-03 R2 LO CA w-offs ite pwr (EC42422 )\Elect ronic fil es\App 1-lC Plots-A2-Z.docx Page 3 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1C via SG 1-1 Appendix 1-1 C Voltage(PU) 0.900 5 a.. ar C) g 0.800 0.000 2.000 4.000 6.000 8.000 Time in Seconds Voltage(PU) 5 0.900 a.. ar C)

0 0.800 0.000 2.000 4.000 6.000 8.000 Time in Seconds Voltage(PU)

 ~ 0.900 ar C)
 ~

0 0.800 0.000 2.000 4.000 6.000 8.000 Time in Seconds L:\Electrical Ana lysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic fil es\App 1-lC Plots-A2-Z.docx Page 4 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus lC via SG 1-1 Appendix 1-lC Voltage(PU) and Current(PU)

                                                                                                -  P7B-(SW) 0.800                                                                         5.00        ... P7B-(SW) 4.00

_ 0.600

, 5' Q.

a, Cl 2.286, 1.09 3.00 ... Q. C: 0)

 ~ 0.400
                                                                                           ~

s

 >                                                                                        u 2.00 0.200 1.00 0.000                                                                         0.00 0.000             2.000             4.000          6.000          8.000 Time in Seconds Voltage(PU) and Current(PU) 6.00 0.800                                                                         5.00        ...
                                                                                               -   P52A-(CC)

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, 5' Q.

Q. a, Cl 1.671, 1.18 3.00 C: 0)

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                                                                                          ~

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Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus lC via SG 1-1 Appendix 1-lC Voltage(PU) and Current(PU)

                                                                                                     -   P52C{CC) 0.800                                                                              5.00         Ill P52C{CC) 4.00

_ 0.600 a.. a.. Q) .:;- Cl 11.671 , 1.18 I 3.00 C

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0 0.400 ::I

 >                                                                                              u 2.00 0.200 1.00 0.000                                                                             0.00 0.000            2.000              4.000             6.000        8.000 Time in Seconds Voltage(PU) and Current(PU)
                                                                                                     -   P54A-(CS) 0.800                                                                             6.00          Ill P54A-(CS) 5.00

_ 0.600 a.. 4.00 a.. Q) Cl 4.203, 1.10 "E nl

 ~ 0.400                                                                               3.00      ~

I

 >                                                                                              u 2.00 0.200 1.00 0.000                                                                             0.00 0.000             2.000              4.000             6.000        8.000 Time in Seco nds L:\El ectri cal Analys is\EA-ELEC-EDSA-03 R2 LO CA w-offsite pw r (EC4 2422)\Elect ro ni c fil es\App 1-lC Plots-A2-Z.docx Page 6 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1C via SG 1-1 Appendix 1-1 C Voltage(PU) and Current(PU)

                                                                                             -   P54B-{CS) 0.800                                                                     6.00         Ill P54B-{CS) 5.00
 -    0.600 4.00   5' a..                                                                                   a..

ar01 4.104, 106 . C: ns

 ~ 0.400                                                                        3.00    ...~

i

 >                                                                                     (.)

2.00 0.200 1.00 0 .000 0.00 0.000 2.000 4.000 6.000 8.000 Time in Seconds Voltage(PU) and Current(PU)

                                                                                                 -   P55A 0 .800                                                                                     Ill P55A 4.00 0.600 5'                                                                                  3.00    5' a..

ar01 ! 1.972. 0.61 a. C: j 0.400 1

2.00 :i (.) 0.200 1.00 0 .000 0.00 0.000 2.000 4.000 6.000 8.000 Time in Seconds L:\Electrical Analysis\EA-ELEC-EDSA-03 RZ LOCA w-offsite pwr (EC42422)\Electronic file s\App 1-lC Plots-AZ-Z.docx Page 7 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1C via SG 1-1 Appendix l-1C Voltage(PU) and Current(PU) 6.00

                                                                                                 -   P55C 0.800                                                                                      Ill P55C 5.00 0.600                                                                           4.00 5                                                                                          5 D..                                                                                        D..

Q) ;- Cl 1.695, 0.47 3.00 C: Ill

 ~ 0.400                                                                                     ...

I!!

l

 >                                                                                          (.)

2.00 0.200 1.00 0.000 0.00 0.000 2.000 4.000 6.000 8.000 Time in Seconds Voltage(PU) and Current(PU) 5.00 - P56A 0.800 Ill P56A 4.00 0.600

, 5 D..

Q) Cl 4.544 , 0.65 3.00 ... D.. C: Ill

 ~ 0.400 I!!

l

 >                                                                                    2.00

(.) 0.200 1.00 0.000 0.00 0.000 2.000 4.000 6.000 8.000 Time in Seconds Acceleration t ime= 4.544 - 1.865 = 2.679 seconds L:\Electrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electroni c fil es\App 1-lC Plots-A2-Z.docx Page 8 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus lC via SG 1-1 Appendix 1-lC Voltage(PU) and Current(PU) 6.00

                                                                                                          -    P568 0.800                                                                                             Ill  P568 5.00 0.600                                                                              4.00 5                                                                                                  5 a.

QI Cl !6.082 , 0.66 I 3.00 a. C:

('Cl

 ~ 0.400                                                                                             ::J
 >                                                                                                  u 2.00 0.200 1.00 0.000                                                                              0.00 0.000          2.000          4.000               6.000                8.000 Time in Seconds Acceleration time= 6.082- 3.721 = 2.361 seconds Voltage(PU) and Current(PU) 5.00
                                                                                                -       P66A-{HPS1 )

0.800 111 P66A-{HPS1 ) 4.00

 -      0.600

i 3.00 5

a. a.

QI :;:;- Cl 3.919, 0.98 C: ('Cl

 ~ 0.400 I!!

J 2.00 u 0.200 1.00 0.000 0.00 0.000 2.000 4.000 6.000 8.000 Time in Seconds L:\Electrical Ana lysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic fil es\App 1-lC Plots-A2 -Z.docx Page 9 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus lC via SG 1-1 Appendix 1-lC Voltage(PU) and Current(PU) 5.00

                                                                                          -    P66B-{HPS1 )

0.800 111 P66B-{HPS1) 4.00 _ 0.600

, 3.00 5' D.

arCl 13 830, 0.87 ! D. C

n)

 ~ 0.400                                                                             ::J 2.00   u 0.200                                                                  1.00 0.000                                                                  0.00 0.000         2.000           4 .000            6.000      8.000 Time in Seconds Voltage(PU) and Current(PU) 5.00
                                                                                           -   P67 A-{LPSI) 0.800                                                                                111 P67A-{LPSI) 4.00

_ 0.600 D. 3.00 5' D. arCl j1.896, @ 'E

n)

 ~ 0.400                                                                              ::J
 >                                                                           2.00   u 0.200 1.00 0.000                                                                  0.00 0.000         2.000            4.000            6.000      8.000 Time in Seconds L:\Electrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic files\App J-lC Plots-A2-Z.docx Page 10 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus lC via SG 1-1 Appendix 1-lC Voltage(PU) and Current(PU) 5.00

                                                                                               -     P67B-(LPSI) 0.800                                                                                     111   P67B-(LPSI) 4.00
 -   0.600

, 5 a.. 3.00 a..

a, .:: Cl 11.924 , 1.16 1 C:

 <II
 ~ 0.400 I!!

s

 >                                                                           2.00    (.)

0.200 1.00 0.000 0.00 0.000 2.000 4.000 6.000 8.000 Time in Seconds Voltage(PU) and Current(PU) 6.00 - MCC-1-X 0.800 Ill MCC-1-X 5.00 0.600 5 4.00 5 a.. a.. a, i:QI Cl

 <II 3.00        t::
 ~ 0.400                                                                                    :::s
 >                                                                                         (.)

2.00 0.200 1.00 0.000 0.00 0.000 2.000 4.000 6.000 8.000 Time in Seconds Acceleration time= 6.129 -3.912 = 2.217 seconds L:\Electrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic file s\App 1-lC Plots-A2-Z.docx Page 11 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus lC via SG 1-1 Appendix 1-1 C Voltage(PU) and Current(PU)

                                                                                                        -    MCC-2-X 0.800                                      "'\;                                   4 .00          111  MCC-2-X
                                                        I
  - 0.600                                                       !4 .903, 2.41 I

> 3.00 5' a.

a, Cl I

                                                              \                                  ...

a. C: Ill

  ~ 0.400                                                                                         ~

2 .00 ::::i

  >                                                                                              u 0.200                                                                             1.00 0.000                                                                             0.00 0.000           2.000            4.000                     6.000     8.000 Time in Seconds Acceleration time= 4.903 -4.069 = 0.834 seconds All-EX02-SUB1-2 (SG 1-1 To Bus lC)- Current - Peak -0.113 L: \E lec trical Analysis\EA-ELEC-EDSA-0 3 R2 LO CA w-offsite pw r (EC42422)\ Elect roni c fil es\Ap p 1-l C Plots-A2- Z.docx Page 12 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus lC via SG 1-1 Appendix 1-lC All-EX02-SUB1-2 (SG 1-1 To Bus 1()- Current - Steady State- 0.036 t: A12-A14-SUB1-2 (SG 1-1 To Bus 10) - Current- Peak- 0.0740 L:\Electrical Analysis\EA-ELEC-EDSA-03 RZ LOCA w-offsite pwr (EC42422)\Electronic files\App 1-lC Plots-AZ-Z.docx Page 13 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1C via SG 1-1 Appendix 1-lC A12-A14-SUB1-2 (SG 1-1 To Bus lD) - Current - Steady State - 0.0358 L:\Electrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic files\App 1-lC Plots-A2-Z.docx Page 14 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SG 1-1 Appendix I-1D Voltage(PU) 0.950

 ~ 0.900 Q)

Cl 4.290, 0.933

 ~ 0.850 g

0.800 0.000 2.000 4.000 6.000 8.000 Time in Seconds Bus lC Voltage(PU) 0.950 5' 0.900 a.. Q) Cl 4.500, 0.933

 !9  0.850 g

0.800 0.000 2.000 4.000 6.000 8.000 Time in Seconds Bus 1D Voltage(PU) 0.950 5' 0.900 a.. Q) Cl

 !9  0.850 g

0.800 0.000 2.000 4.000 6.000 8.000 Time in Seconds LC-11 L:\Electrical Analysis\EA-ELEC-EDSA-03 R2 LO CA w-offsite pwr (EC42422)\Electronic files\App 1-10 Plots-A2-Z.docx Page 1 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SG 1-1 Appendix I-1D Voltage(PU) 0.900 5 Q. QI

 ;   0.800 0

0.700 0.000 2.000 4.000 6.000 8.000 Time in Seconds LC-12 Voltage(PU) 5 0.900 Q. QI C> n,

0

 > 0.800 0.000           2.000         4 .000          6.000         8.000 Time in Seconds MCC-1 Voltage(PU) 5 0.900 Q.

QI C>

 .s 0
 > 0.800 0.000           2.000         4.000           6.000         8.000 Time in Seconds MCC-2 L:\Electrical Analysis\EA-ELEC-EDSA-03 RZ LOCA w-offsite pwr (EC42422)\Electronic files\App 1-lD Plots-AZ-Z.docx Page 2 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SG 1-1 Appendix I-1D Voltage(PU) 0.950 5' 0.900 D.. Q) Cl 2 0. 850 g 0.800 0.000 2.000 4.000 6.000 8.000 Time in Seconds MCC-2 1 Voltage(PU) 0.900 5' D.. Q)

  ~  0.800 a!=

0 0.700 0.000 2.000 4.000 6.000 8.000 Time in Seconds MCC-22 Voltage(PU) 0.950 5' 0.900 D.. Q) Cl 2 0.850 g 0.800 0.000 2.000 4.000 6.000 8. 000 Time in Seconds MCC-23 L:\Electri cal Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422) \ Electronic fil es\App 1-10 Plots-A2 -Z.docx Page 3 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 10 via SG 1-1 Appendix I-1D Voltage(PU) 0.900 5 a. Q)

 ;   0.800 0

0.700 0.000 2.000 4.000 6.000 8.000 Time in Seconds MCC-24 Voltage(PU) 5 0.900 a. Q) Cl 5 g 0.800 0.000 2.000 4.000 6.000 8000 Time in Seconds MCC-25 Voltage(PU) 5 0.900 a. Q) Cl 5 g 0.800 0.000 2.000 4.000 6.000 8.000 Time in Seconds MCC-26 L:\El ectrical Ana lysis\EA-ELEC-EDSA-03 RZ LOCA w-offsite pwr (EC42422)\Electronic files\App 1-10 Plots-AZ-Z.docx Page 4 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SG 1-1 Appendix I-1D Voltage(PU) and Current(PU) 0.800 5.00 ...

                                                                                                          -   P7C-{SW)

P7C-{SW) 4.00 0.600 5' ::::, Cl. ai

g Cl nl 0.400 2.327, 1.22 3.00 Cl.

C:

J

 >                                                                                                 (.)

2.00 0.200 1.00 0.000 0.00 0.000 2.000 4 .000 6.000 8.000 Time in Seconds Voltage(PU) and Current(PU) 0.800 5.00 ...

                                                                                                         -    P52B-(CC)

P52B-(CC)

I I 4.00

 -     0.600                  I

, I ::::,

Cl. Cl. ai ~ Cl 3.00 C: nl

g 0.400 ~

J

 >                                                                                                (.)

2.00 0.200 1.00 0.000 0.00 0.000 2.000 4.000 6.000 8.000 Time in Seconds L:\Electrical Analys is\EA-ELEC-EDSA-03 RZ LOCA w-offsite pwr (EC42422)\Electronic files\App 1-10 Plots-AZ-Z.docx Page 5 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SG 1-1 Appendix I-1D Voltage(PU) and Current(PU)

                                                                                                                       -   P52C-(CC) 0.800                                                                                        5.00              Ill P52C-(CC) 4.00

_ 0.600

, 5 C. C.

Q) 3.00 C: Cl Ill

g 0.400 ...::::,~

  >                                                                                                         (.)

2.00 0.200 1.00 0.000 0.00 0.000 2.000 4 .000 6.000 8.000 Time in Seconds Voltage(PU) and CurrentWU)

                                                                                                                       -   P54A-(CS) 0.800                                                                                        6.00 Ill P54A-(CS) j4.256, 1.17                                              5.00

_ 0.600

, 4 .00 5 C. C.

Q) .... C: Cl Ill

g 0.400 3.00 ~::::,

  >                                                                                                         (.)

2.00 0.200 1.00 0.000 0.00 0.000 2.000 4.000 6.000 8.000 Time in Seconds L: \ Electrical Analysis\ EA-ELEC- EDSA-0 3 R2 LO CA w-offsite pwr (E C424 22 )\ Electronic fil es\App I-10 Pl ots-A2-Z.docx Page 6 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SG 1-1 Appendix I-1D Voltage(PU) and Current(PU)

                                                                                                            -    P54B-(CS) 6.00 0.800                                                                                                  Ill  P54B-(CS) 5.00
 -   0.600
 =>

0.. 4.00 s-0.. Ql .... C Cl nJ I!!

                                                                                                     ...::I
 ~ 0.400                                                                                     3.00
 >                                                                                                  (.)

2.00 0.200 1.00 0.000 000 0.000 2.000 4.000 6.000 8.000 Time in Seconds Voltage(PU) and Current(PU)

                                                                                                                 -   PSSA 0.800 4.00           Ill PSSA 0.600 3.00 S-c..

s-0.. Ql C: Cl

 ~ 0.400                                                                                          2.00
                                                                                                             ~

0 ::I

 >                                                                                                          (.)

0.200 1.00 0.000 0.00 0.000 2.000 4.000 6.000 8.000 Time in Seconds Acceleration time= 2.681-1.774 = 0.907 seconds L:\Electrical Analysis\EA-E LEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic fil es\App 1-lD Plots-A2-Z.docx Page 7 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SG 1-1 Appendix I-1D Voltage(PU) and Current(PU) 6.00 0.800 5.00

                                                                                                                      -   P55B P55B 0.600                                                                                              4.00 5'                                                                                                             5' ll..
 ~

Cl ll.. C: 3.00

 ~ 0.400                                                                                                         ~::,

g u 2.00 0.200 1.00 0.000 0.00 0.000 2.000 4.000 6.000 8.000 Time in Seconds Accel eration t ime= 2.513 - 1.840 = 0.673 seconds Volta ge(PU) and Current( PU) 0.800 -- --~ 5.00

                                                                                                                      -   P56A P56A 4.754, 0.70                                             4.00 0.600

J 5' ll..

 ~                                                                                                       3.00   ...

ll.. Cl Ill

 ~ 0.400
                                                                                                                 .C:
                                                                                                                  ~
 >                                                                                                       2.00   u 0.200 1.00 0.000                                                                                              0.00 I                   I                    I                     I                       I 0.000               2.000               4.000                6.000                     8.000 Time in Seconds Accele ration t ime= 4.754 - 2.089 = 2.665 seconds L:\Electrical Analys is\ EA-ELEC-ED SA-0 3 R2 LOCA w- offsite pwr (EC4 2422) \ El ectronic fil es\App I-10 Plots-AZ-2.docx Page 8 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 10 via SG 1-1 Appendix l-1D Voltage(PU) and Current(PU) 6.00

                                                     'c .a;;,-;;;---~~.,
                                                     '{;I""         ~\                                              -    P56B 0.800                                                                                                        111  P56B L                          5.00 L
                                                               @:694,D.68]

0.600 4.00 5' ::::> ll.. ll.. Ql ....

g Cl n,

0.400 3.00

                                                                                                               ~
 >                                                                                                           u 2.00 0.200 1.00 0.000                                                                                        0.00 I                 I                       I                I                    I 0.000             2.000                4.000               6.000                8.000 Time in Seconds Acceleration time= 6.094 - 3.729 = 2.365 seconds Voltage(PU) and Current(PU)
                                                                                                         -        P66A-(HPS1) 0.800                                                                                             111      P66A-(HPS1) 4.00 0.600

> 3.00 ::::,

ll.. ll.. Ql 3.954, 0 .911 Cl 'E

n,

g 0.400 2.00 8 0.200 1.00 0.000 0.00 0.000 2.000 4.000 6.000 8.000 Time in Seconds L:\Electrical Analysis\EA-ELE C-EDSA-0 3 R2 LO CA w-offsite pwr (EC42422)\Electronic fil es\App 1-lD Pl ots-A2-Z.docx Page 9 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SG 1-1 Appendix I-1D Voltage(PU) and Current(PU) 5.00

                                                                                                         -    P66B-(H PSI) 0.800                                                                                             m    P66B-(HPSI )
                                             "\
                                               \                                        4.00 l
 - 0.600

> 3.00 5" Cl. Cl.

a, 3.839, 0.87 .... C: Cl 111

 ~ 0.400
                                                                                                ...:::,~

2.00

 >                                                                                             (.)

0.200 1.00 0.000 0.00 0.000 2.000 4.000 6.000 8.000 Time in Seconds Voltage(PU) and Current(PU) 5.00

                                                                                                          -   P67A-(LPS1 )

0.800 Ill P67A-(LPS1) 4.00

 - 0.600

> 3.00 5" Cl. Cl.

a, 1.920, 1.07 Z"" Cl C: 111

 ~ 0.400
                                                                                                 ~
 >                                                                                      2.00    (.)

0.200 1.00 0.000 0.00 0.000 2.000 4.000 6.000 8.000 Time in Seconds L:\Electrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic files\App 1-lD Plots-A2-Z.docx Page 10 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SG 1-1 Appendix I-1D Voltage(PU) and Current(PU) 5.00

                                                                                                      -     P67B-(LPSI) 0.800                                                                                            Ill   P67B-(LPSI) 4.00
 -   0.600

i 5" a.

wCl 1.920, 1.17 3.00 a. C: ta

 ~ 0.400
                                                                                                ~:,
 >                                                                                       2.00  u 0.200                                                                               1.00 0 .000                                                                              0.00 0.000             2.000          4.000             6.000              8.000 Time in Seconds Voltage( PU) and Current(PU)
                                                 ,                                          6.00          -    MCC-1-X 0.800                                       ,I I

Ill MCC-1-X I II 5.00

                                                  ,,II 0.600                                        ,.,,

I}

i

                                                        '                                   4.00    5" a.

a. I w ,,'

Cl

                                                          "'-          6.098, 2.41                  C:
                                                              ~                                     ...

ta 1'1 3.00 ~

 ~ 0.400                                         ','                                                :,
                                                                "                                   u
                                                  '                                         2.00 0.200 1.00 0.000                                                                                  0.00 I                  I               I                  I                   I 0.000              2.000           4.000              6.000               8.000 Time in Seconds Acceleration tim e = 6.098 -3.916 = 2.182 seconds L:\Electrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic files\App 1-10 Plots-A2-Z.docx Page 11 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SG 1-1 Appendix I-1D Voltage(PU) and Current(PU)

                                                                                                        -    MCC-2-X 0.800                                                                                              111  MCC-2-X 4.00 0.600

> 3. 00 ::>

C. QI Cl nl

 ~ 0400
                                                         '\                                        -

C. C:

                                                                                                    ~
 >                                                           js .027, 240                    2.00  c3 0.200                                                                                   1.00 0.000                                                                                   0.00 0.000              2.000            4.000                6.000              8.000 Time in Seconds Acceleration time= 5.027 -4.095 = 0.932 seconds All-EX02-SUB1-2 (SG 1-1 To Bus 1() - Current - Peak - 0.0798 L:\Electrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\El ectronic files\App 1-lD Plots-A2-Z.docx Page 12 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SG 1-1 Appendix I-1D llOIGOJtl j All-EX02-SUB1-2 (SG 1-1 To Bus lC) - Current - Steady State - 0.0315 A12-A14-SUB1-2 (SG 1-1 To Bus 10) - Current - Peak - 0.1064 L:\Electrical Analysis\EA-ELEC-EDSA-03 RZ LOCA w -offsite pwr (EC42422)\Electronic files\App 1-lD Plots-AZ-2.docx Page 13 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SG 1-1 Appendix I-1D A12-A14-SUB1-2 (SG 1-1 To Bus lD)- Cu rrent -Steady State - 0.0393 L:\Electrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic files\App 1-lD Plots-A2-Z.docx Page 14 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1C via SU 1-2 Appendix K-1C Voltage(PU)

                                         --4----- -                  Bus-1C 5'   0.900 a.

Q) Cl 5.597, 0.933 i

 .l!!

0

 >    0.800 0.000        2.000       4.000      6.000         8.000 Time in Seconds Voltage(PU)
                                         --~---- -                   Bus-1D 5'   0.900 a.

Q) Cl 1 s 659, o.933 J

0

 >    0.800 0.000        2.000      4.000       6.000         8.000 Time in Seconds Voltage(PU) 0.900
                                          ----!,----- -               LC-11 5'

a. Q) Cl I

 ~ 0.800 0

0.700 0.000 2.000 4.000 6.000 8000 Time in Seconds L:\Electrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic files\APP K- l C Plots-82-Z.docx Page 1 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1C via SU 1-2 Appendix K-1C Voltage(PU) 0.900

                                         ---1----- -                  LC-12 5'

c.. Q) E 0.800 :s.659, o.917 I 0 0.700 0.000 2.000 4.000 6.000 8.000 Time in Seconds Voltage(PU)

 -    0.900 c..

Q) Cl C'O

 ~ 0.800 0 .000       2.000      4.000        6.000        8.000 Time in Seconds Voltage(PU) 5    0.900 c..

Q) Cl

 .l!!

g 0.800 0 .000 2.000 4.000 6.000 8.000 Time in Seconds L:\Electrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electroni c files\APP K-lC Plots-B2-Z.docx Page 2 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1C via SU 1-2 Appendix K-1C Voltage(PU)

J D..

0.900 _r--- MCC-21 Q) Cl ;1.185, 0.699

 ~ 0.800
 ~

0 .700 0.000 2.000 4 .000 6 .000 8.000 Time in Seconds Voltage(PU) 0.900 ~ - MCC>2 5' D.. Q) Cl 1.207, 0.682

 ~   0. 800 0

0.700 0 .000 2.000 4 .000 6 .000 8.000 Time in Seconds Voltage(PU) 0.900

J D..

Q) Cl

 ~ 0.800 0

0 .700 0.000 2.000 4. 000 6.000 8.000 Time in Seconds L:\Electrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic files\APP K-lC Plots-B2 -Z.docx Page 3 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1C via SU 1-2 Appendix K-1C Voltage(PU) 0.900 ~ - MCC-24 5' D. w 1.207, 0.681 F 0.800 g 0.700 0.000 2.000 4 .000 6.000 8.000 Time in Seconds Voltage(PU)

                                                       ...- - - -        MCC-25 5' 0.900 D.

wCl 2 g 0.800 1.171 , 0.722 /" 0.000 2.000 4 .000 6.000 8.000 Time in Seconds Voltage(PU)

                                                ------ -                 MCC-26 5' 0.900 D.

wCl 2 0

 > 0.800 0 .000        2.000        4 .000    6.000        8.000 Time in Seconds L:\ El ectri cal Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC4 24 22)\Electroni c fil es\APP K-lC Plots-B2-Z.d ocx Page 4 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1C via SU 1-2 Appendix K-1C Voltage(PU) and Current(PU) 0.800 5.00

                                                                                                          -   P?B-(SW)

P?B-(SW) 4.00 0.600 0.. 0.. wCl 2.4 18, 1.11 3.00 ::;- C: nl

 ';3 0.400                                                                                          ...~

I

 >                                                                                           2.00

(.) 0.200 1.00 0000 0.00 0.000 2.000 4.000 6.000 8.000 Time in Seconds Voltage(PU) and Current(PU)

                                                                                                         -   P52A-(CC) 0.800                                                                                  5.00         111 P52A-(CC) 4.00
 -   0.600 0..                                                                                              0..

wCl 1.742 , 1.22 3.oo C nl

 ';3 0.400                                                                                         ~

I

 >                                                                                          2.00

(.) 0.200 1.00 0.000 0.00 0.000 2.000 4.000 6.000 8.000 Time in Seconds L:\Electrica l Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic fi les\APP K-lC Plots- 8 2-Z.docx Page 5 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1C via SU 1-2 Appendix K-1C Voltage(PU) and Current(PU)

                                                                                                            -   P52C (CC) 5.00 0.800                                                                                                  IH P52C(CC) l
                             \                                                                 4.00
                              \
 -   0.600                     I Cl.
                               \                                                                    5' Cl.

a, I1.742, 0.786 I 3.00 .... C: Cl

 ~"' 0.400                                                                                           ...~:,
 >                                                                                                  u 2.00 0.200 1.00 0.000                                                                                     0.00 0.000                 2.000             4.000            6.000                8.000 Time in Seconds Voltage(PU) and Current(PU) 6.00         -   P54A-(CS) 0.800                                                                                                  111 P54A-(CS) 5.00 0.600 5'                                                                                            4.00 5' Cl.                                                                                                Cl.

a, Cl 4.387, 1.11 C:

 ~"' 0.400 3.00  ~
 >                                                                                                  u 2.00 0.200 1.00 0.000                                                                                     0.00 0.000                 2.000             4.000           6.000                 8.000 Time in Seconds L:\Electrica l Analysis\EA-ELEC-EDSA-03 R2 LOCA w-o ffsi te pwr (EC42422)\Electronic fil es\APP K-lC Plots-82-Z.docx Page 6 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1C via SU 1-2 Appendix K-1C Voltage(PU) and Current(PU) 6.00 - P54B-(CS) 0.800 111 P54B-(CS) 5.00 _ 0.600

, 4.00 5 Q. Q.

a, 4.284, 1.05 j c Cl nl

  ~ 0400 3.00    ~
  >                                                                                                       u 2.00 0.200 1.00 0.000                                                                                       0.00 0.000               2.000             4.000              6.000                8.000 Time in Seconds Voltage(PU) and Current(PU)
                                                                                                                        -   P55A 0.800 4.00            111 P55A 0.600                                                                                            3.00 Q.                                                                                                            Q.

a, 2.504, 0.60

                                                                                                                ....C:

Cl

  ~ 0400                                                                                                2.00     ~

0

  >                                                                                                             u 0.200                                                                                            1.00 0.000                                                                                            0.00 0.000                2.000               4.000              6.000                  8.000 Time in Seconds L: \ El ectri cal Analys is\EA- ELEC-ED SA-03 RZ LOCA w-offsite pwr (EC42422)\ Electronic fil es\APP K-l C Plots- B2-Z.docx Page 7 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1C via SU 1-2 Appendix K-1C Voltage(PU) and Current(PU)

                                                                                                             -   P55C 0.800                                                                                    5.00          111 P55C 4.00 0.600 s-a.                                                                                                  s-a.

aj' C) 2.222, 0.825 3.00 c

n,

 ~ 0.400                                                                                               ::I
 >                                                                                                     u 2.00 0.200 1.00 0.000                                                                                    0.00 0 .000            2.000              4.000              6.000                8.000 Time in Seconds Voltage(PU) and Current(PU) 5.00          -   P56A 0.800                                                                                                  111 P56A 4.00 0.600 s-a.                                                                                                  s-a.

aj' 3.00 C) 4.971 , 0.66 c n,

 ~ 0.400                                                                                               ...~

I

 >                                                                                             2.00 u 0.200 1.00 0.000                                                                                    0.00 0.000             2.000              4.000              6.000                8.000 Time in Seconds L:\Electrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic files\APP K-lC Pl ots-B2-Z.docx Page 8 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1C via SU 1-2 Appendix K-1C Voltage(PU) and Current(PU) 1 - - - - - - .... 6.00

                                                    ;r. .- - --~ -                                                  -    P56B 0.800                                                            \   \                     ~    5.00           111  P568
                                                                           \
                                                                            \
                                                                            \

0.600 \ ~ 4.00 5" ::::, D..

 ~
 ~

Cl nl 0.400 6.366, 0.67 I >- 3.00 - D.. C

                                                                                                              ~::,
 >                                                                                                           u
                                                                                                ~   2.00 0.200
                                                                                                ~    1.00 0.000    :===::::::==::::::==::::::==~--..----r--.:.__r--_--.

I I I I I

                                                                                                . . 0.00 0.000                2.000            4.000               6.000                 8.000 Time in Seconds Voltage(PU) and Current(PU)
                                                                                                         -        P66A-(HPS1) 0.800                                                                                               111      P66A-(HPS1) 4.00 0.600 5"                                                                                       3.00      5" D..                                                                                                D..
 ~                                                                                                  Z' Cl                                               4.081 , 0.99                                     C
                                                                                                    ~

nl .

 ~   0.400                                                                                2.00      :::i
 >                                                                                                 u 0.200                                                                                1.00 0.000                                                                                0.00 0.000              2.000           4.000             6.000              8.000 Time in Seconds L:\Electrical Analys is\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic files\APP K-lC Plots-B2-Z.docx Page 9 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1C via SU 1-2 Appendix K-1C Voltage(PU) and Current(PU)

                                                                                                        -   P66B-(HPSI) 0.800                                  \\                                          4.00 111 P66B-(HPSI)

_ 0.600

, 3.00 5 Q. Q.

QI 4 001 , 0.88 C: Cl

  <II
 'g    0.400                                                                                     ~

2.00

 >                                                                                              u 0.200                                                                              1.00 0.000                                                                              0.00 0.000            2.000              4 .000            6.000           8.000 Time in Seconds Voltage(PU) and Current(PU) 5.00
                                                                                                        -   P67A-(LPS1) 0.800                                                                                            111 P67 A-(LPSI) 4.00

_ 0.600 Q. 3.00 ~ QI 1.982 , 1-::io

                                                                                                 ....C:

Cl

  <II
 'g    0.400                                                                                      ~
 >                                                                                        2.00   u 0.200                                                                  --          1.00 0.000                                                                              0.00 0.000           2 .000              4.000             6.000            8.000 Time in Seconds L:\Electrical Analys is\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\El ectronic files\APP K-lC Plots-B2-Z.docx Page 10 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1C via SU 1-2 Appendix K-1C Voltage(PU) and Current(PU) 5.00

                                                                                                                -     P67B-(LPSI) 0.800                                                                                                      111   P67B-(LPSI) 4.00 0.600

, 3.00 5' a.

Cl 2.010, 1.21 I a. C: ta

 ~ 0.400                                                                                              ~

i

 >                                                                                             2.00  u 0.200                                                                                     1.00 0.000                                                                                     0.00 0.000              2.000               4.000          6.000                 8.000 Time in Seconds Voltage(PU) and Current(PU) 6.00              -   MCC-1-X 0.800                                                                                                          Ill MCC-1 -X 5.00 0.600 5'                                                                                               4.00    5' a.
 ~

Cl 6.486, 2.44 a. C: ta

 ~ 0.400                                                                                          3.00     ...I!!

i

 >                                                                                                        u 2.00 0.200 1.00 0.000                                                                                        0.00 I                  I                    I               I                       I 0 .000              2.000                4.000           6.000                   8.000 Time in Seconds L:\Electrica l Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offs ite pwr (EC42 422 )\El ectronic fil es\APP K-1C Plots- 8 2-Z.d ocx Page 11 ofl4

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1C via SU 1-2 Appendix K-1C Voltage(PU) and Current(PU) 5.00

                                                                                                           -    MCC-2-X 0.800                                                                                             I ll MCC-2-X
   -     0.600
                                                     "'  \
                                                           \ \

4 .00

a. \ 3.00 s-Q.

QI 15.325, 2.42 I C: Cl nl

   ~ 0.400
                                                                                                     ...~

s

   >                                                                                          2.00  (.)

0.200 1.00 0.000 0.00 I I I I I 0 .000 2.000 4 .000 6.000 8.000 Time in Seconds 'i f oc.50 All-X04-SU B1-2 (SU 1-2 To Bus 1() - Current - Peak- 0.1101 pu L:\Electrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electroni c fil es\APP K-lC Plots-82-Z.docx Page 12 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1C via SU 1-2 Appendix K-1C All-X04-SUB1-2 (SU 1-2 To Bus 1() - Current - Steady State - 0.0363 pu t: A12-X04-SUB1-2 (SU 1-2 To Bus lD) - Current - Peak- 0.0740 pu L:\Electrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic files\APP K-lC Plots-B2-Z.docx Page 13 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1C via SU 1-2 Appendix K-1C t A12-X04-SUB1-2 (SU 1-2 To Bus 10) - Current - Steady State - 0.0358 pu L:\Electrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic files\APP K-lC Plots-82-Z.docx Page 14 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SU 1-2 Appendix K-1D Voltage(PU) 5 0.900 c.. QI 5.237, 0.933 0 Cl ro

    > 0.800 0.000           2.000         4.000           6.000         8.000 Time in Seconds Bus lC Voltage(PU) 5 0.900 c..

QI @ 079,0. 933 Cl ro

0

    > 0.800 0.000           2.000         4.000           6.000         8.000 Time in Seconds Bus 10 Voltage(PU) 5 0.900 c..

QI Cl ro

0

    > 0.800 0.000           2.000         4.000           6.000         8.000 Time in Seconds LC 11 L:\El ectrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic fil es\App K-lD Plots-B2-Z.docx Page 1 of 14 I~

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SU 1-2 Appendix K-1D Voltage(PU) 0.900 5' Cl.. i 0.800

 !9 0

0.700 0.000 2.000 4 .000 6.000 8.000 Time in Seconds LC 12 Voltage(PU)

 -    0.900
 =>

Cl.. Q) Cl

 !9 g 0.800 0.000           2.000         4 .000          6.000         8.000 Time in Seconds MCC-1 Voltage(PU)
 -    0.900
 =>

Cl.. Q) Cl

 !9 g 0.800 0.000           2.000         4.000           6.000         8.000 Time in Seconds MCC-2 L:\El ectrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic files\App K-lD Plots-82-Z.docx Page 2 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SU 1-2 Appendix K-1D Voltage(PU) 5" 0.900 a. QI Cl

0

 >   0.800 0.000           2.000         4.000           6.000         8.000 Time in Seconds MCC-21 Voltage(PU) 0.900 a.
 ! 0.800 g

0.700 0.000 2.000 4.000 6.000 8.000 Time in Seconds MCC-22 Voltage(PU) 5" 0.900 a. QI Cl

0

 >   0.800 0.000           2.000         4 .000          6.000         8.000 Time in Seconds MCC-23 L:\Electrical Analysis\EA-ELEC-EDSA-03 RZ LOCA w-offsite pwr (EC42422)\Electronic file s\App K-10 Plots-B2-Z.docx Page 3 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SU 1-2 Appendix K-1D Voltage(PU) 0.900 5 a. 10.800

0 0.700 0.000 2.000 4.000 6.000 8.000 Time in Seconds MCC-24 Voltage(PU) 5 0.900 a. a, Cl

g 0.800 0.000 2.000 4.000 6.000 8.000 Time in Seconds MCC-25 Voltage(PU) 5 0.900 a. a, Cl

g 0.800 0.000 2.000 4.000 6.000 8.000 Time in Seconds MCC-2 6 L:\Electrical Analysis\ EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\El ectronic files\App K-10 Plots-B2-Z.docx Page 4 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SU 1-2 Appendix K-1D Voltage(PU) and Current(PU)

                                                                                                              -   P7C.(SW) 5.00 0.800                                                                                                  Ill P7C.(SW) 4 .00

_ 0.600

, 5' fl. fl.

 ~                                                                                             3.00   :;--

C) 2.438, 1.24 C:

g 111 0.400 ~

 >                                                                                             2.00 u

0.200 1.00 0.000 0 .00 0.000 2.000 4.000 6.000 8.000 Time in Seconds Voltage(PU) and Current(PU)

                                                                                                             -    P52B-(CC) 0.800                                                                                   5.00          111  P52B-(CC) 4 .00 0.600 fl.                                                                                                 fl.
 ~                                                                                             3.00  i:

C) 11.738, 0.780 J C1) 111 t:; ,

g 0.400 :::,

 >                                                                                                   u 2.00 0.200 1.00 0.000                                                                                   0.00 0.000            2.000              4.000            6.000                  8.000 Time in Seconds L:\Electrical Analysis\EA-E LEC-E DSA-03 R2 LOCA w-offsite pwr (EC42422)\Electro nic fi les\App K-10 Plots-B2-Z.docx Page 5 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SU 1-2 Appendix K-1D Voltage(PU) and Current(PU)

                                                                                                             -    P52C-(CC) 5.00 0.800                                                                                                 111  P52C-(CC) 4.00

_ 0.600

, 5 C. C.

QI C) 11.738, 0.785 I 3.00 i: CV

  ~ 0.400
                                                                                                        ~

I

  >                                                                                              2.00 u

0.200 1.00 0.000 0.00 0 .000 2.000 4.000 6.000 8000 Time in Seconds Voltage(PU) and Current(PU) 6.00 - P54A-(CS) 0.800 111 P54A-(CS) 5.00 0.600 5' 4.00 5' C. C. QI C) I 4.435, 0.926 C: CV

  ~ 0.400 3.00   ...~

I

  >                                                                                                    u 2.00 0.200 1.00 0.000                                                                                     0.00 0.000               2.000             4.000             6.000                 8.000 Time in Seconds L: \Electri cal Analys is\ EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422) \Electroni c fil es\App K-lD Pl ots-8 2-Z.docx Page 6 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 10 via SU 1-2 Appendix K-1D Voltage(PU) and Current(PU) 6 .00 - P54B-(CS) 0.800 111 P54B-(CS) 5.00 _ 0.600

 =>                                                                                           4 .00   ::>

a. Q) Cl

  <ll
 ~ 0.400 4 .345, 0.925 3.00 a.

C

I

 >                                                                                                    (.)

2.00 0.200 1.00 0.000 0.00 0000 2.000 4 .000 6.000 8.000 Time in Seconds Voltage(PU) and Current(PU)

                                                                                                                   -   P55A 0.800                                                                                         4.00 111 P55A 0.600                                                                                         3.00
 =>                                                                                                        =>

a. Q) Cl

 ~ 0.400

['2.953, o.825l 2.00 a. C

i 0

 >                                                                                                         (.)

0.200 1.00 0.000 0.00 0.000 2.000 4 .000 6.000 8.000 Time in Seconds L:\Electri cal Analysis\EA-ELEC-EDSA-0 3 R2 LOCA w-offsite pwr (EC42422)\El ectronic fil es\App K-10 Plots-B 2-Z.docx Page 7 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SU 1-2 Appendix K-1D Voltage(PU) and Current(PU) 6.00

                                                                                                                     -   P55B 0.800 111 P55B 5.00 0.600                                                                                        4.00 5Q.                                                                                                       5Q.

w Cl I 12911 , 0.825 3.00 C:

   ~ 0400 0
                                                                                                              ...~

s

  >                                                                                                        (.)

2.00 0.200 1.00 I 0.000 0.00 0.000 2.000 4.000 6.000 8.000 Time in Seconds Voltage(PU) and Current(PU) 5.00 - P56A 0.800 111 P56A 4.00 0.600 5Q. 5Q. w Cl 5.215, 0.923 3.00 ... C: 0:1 ~

   ~ 0400                                                                                                     ::::s
  >                                                                                                 2.00

(.) 0.200 1.00 0.000 0.00 0.000 2.000 4.000 6.000 8.000 Time in Seconds L:\El ectrica l Analysis\EA-ELEC-EDSA-03 RZ LOCA w-offsite pwr (EC4 2422)\ El ectronic file s\App K-lD Plots- B2-Z.docx Page 8 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 10 via SU 1-2 Appendix K-1D Voltage(PU) and Current(PU) J >- 6.00 iI...,...

                                                          , ,_£"-

0.800

                                                                       ',\                                             -

Ill P568 P568

                                                                             \                     ~    5.00
                                                                             \
                                                                              \
                                                                               \

0.600 ~ 4.00 5" 5" ll. ll. gj'" Cl 6.387, 0.925 >- 3.00 i: Ill

 ~ 0.400                                                                                                         ~
 >                                                                                                              (.)
                                                                                                   .- 2.00 0.200
                                                                                                   ~    1.00 0.000                                                                                        ... 0.00 I                  I                   I                    I                     I 0.000              2.000               4.000                6.000                 8.000 Time in Seconds Voltage(PU) and Current(PU)
                                                                                                            -        P66A-(HPS1) 0.800                                                                                                 111      P66A-(HPS1) 4.00
 -    0.600                                                                                  3.00     5" ll.

gj'" Cl 4.138, 0.904 ll. C: Ill

 ~ 0.400                                                                                               ~

2.00 :::i

 >                                                                                                    (.)

0.200 1.00 0.000 0.00 0.000 2.000 4.000 6.000 8.000 Time in Seconds L:\Electrical Analysis\EA-E LEC-E DSA-03 R2 LO CA w-offsi te pwr (EC42422)\Electronic fil es\App K-10 Plots- B2-Z.docx Page 9 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SU 1-2 Appendix K-1D Voltage(PU) and Current(PU)

                                                                                                       -    P66B-(HPSI) 0.800
                                               \                                           4.00 111  P66B-(H PSI)

_ 0.600

, 3.00 5 (l.

a, Cl 4.046 , 0.899 (l. C:

nl 0.400 2.00 I!!

  >                                                                                              u 0.200                                                                                1.00 0.000                                                                                0.00 0.000             2.000              4.000          6.000             8.000 Time in Seconds Voltage(PU) and Current(PU) 5.00
                                                                                                        -   P67A-(LPS1) 0.800                                                                                             111 P67A-(LPS1) 4.00 0.600

, 3.00 5 (l.

a, Cl 1.989, 0.812 1 (l. C: nl

  ~ 0.400
                                                                                                   ~
  >                                                                                        2.00 u 0.200                                                                                1.00 0.000                                                                                0.00 0.000              2.000             4.000          6.000              8.000 Time in Seconds L: \E lectrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic fil es\App K-10 Plots-B2-Z.docx Page 10 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SU 1-2 Appendix K-1D Voltage(PU) and Current(PU) 5.00

                                                                                                           -   P67B-(LPSI) 0.800                                                                                                m   P67B-(LPSI) 4.00
 -    0.600

, 3.00 5 Q.

Q. QI en 2.011 , 0.818 1 c

  <a
 ~ 0.400
                                                                                                     ~
 >                                                                                            2.00  u 0.200                                                                                   1.00 0.000                                                                                   0.00 0.000               2.000            4.000                    6.000       8.000 Time in Seconds Voltage(PU) and Current(PU) 6.00        -    MCC-1-X 0.800                                                       I                                          Ill  MCC-1-X I

i j 5.00

~ l 0.600 ~~-,~f<.*,.\..

, 4.00 5 Q. \ ' '\ Q.

QI en j6.470, 2.44 cI!!

  <a
 ~ 0.400                                                         1                               3.00    ...
 >                                                                                                      u 2.00 0.200 1.00 0.000                                                                                      0.00 0.000                2.000            4.000                     6.000          8.000 Time in Seconds L:\El ectrica l Analysi s\ EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic fil es\App K-lD Plots-B2-Z.docx Page 11 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SU 1-2 Appendix K-1D Voltage(PU) and Current(PU)

                                                                                                           -   MCC-2-X 0.800                                                                                    4 .00        111 MCC-2-X 1
                                                                \

0.600 \ 3.00

, \

c.. c.. a, C)

                                                                                                    ....C:
                                                                                                     ~

n,

 ~   0.400                                                                                    2.00   ::,
 >                                                                                                  (.)

5.464, 2.44 0.200 1.00 0.000 0.00 0.000 2.000 4.000 6.000 8.000 Time in Seconds All-X04-SUB1-2 (SU 1-2 To Bus lC) - Current - Peak - 0.0777 pu L:\Electri ca l Analysis\EA-ELEC-EDSA-03 RZ LOCA w-offsite pwr (EC42422)\Electronic files\App K-lD Plots-B2-Z.docx Page 12 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SU 1-2 Appendix K-1D All-X04-SUB1-2 (SU 1-2 To Bus 1() - Current - Steady State - 0.0315 pu A12-X04-SUB1-2 (SU 1-2 To Bus lD) - Current - Peak- 0.1035 pu L:\Electrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic files\App K-lD Plots-82-Z.docx Page 13 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SU 1-2 Appendix K-1D A12-X04-SUB1-2 (SU 1-2 To Bus 10) - Cu rrent - Steady State - 0.0394 pu L:\Electrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic fi les\App K-10 Plots-82-Z.docx Page 14 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 10 Appendix M-1Ca-SU Voltage(PU) 0.950

                                                                  -  Bus-1C ir  0.900 Q)

Cl 1.124, 0.777

 ~ 0.850 0

0.800 0.000 2.000 4.000 6.000 8.000 Time in Seconds Voltage( PU) 0.950

                                                                  -  Bu s-1 C
 ~ 0.900 Q)

Cl 3.707, 0.932

 ~ 0.850 0

0.800 0.000 2.000 4.000 6.000 8.000 Time in Seconds Voltage(PU) 0.950

                                                                  -  Bus-1C
 ~ 0.900 Q)

Cl

 ~ 0.850 0

0.800 0.000 2.000 4.000 6.000 8.000 Time in Seconds L:\Electrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\E lectronic fi les\App M-l Ca_SU Plots-82.1-Z-lC.docx Page 1 of 4

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D Appendix M-1Ca-SU Voltage(PU) 0.950

                                                                  -  Bus-1D
 ~ 0.900
 ~

Cl (II

 ~    0.850             1.124, 0.781 )

0.800 0.000 2.000 4.000 6.000 8.000 Time in Seconds Bus 1D Voltage(PU) 0.950

                                                                  -  Bus-1 D
 ~    0.900
 ~

Cl (II

 ~ 0.850                                  3.705 , 0.932 0.800 0.000        2.000         4.000          6.000   8.000 Time in Seconds Voltage(PU) 0.950
                                                                  -  Bus-1D
 ~ 0.900
 ~                                           6.603, 0.933 Cl (II
 ~ 0.850 0.800 0.000        2.000         4.000          6.000   8.000 Time in Seconds L:\Electrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic file s\App M-lCa_SU Plots-82 .1-Z-lC.docx Page 2 of4

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D Appendix M-1Ca-SU Voltage(PU) and Current(PU) 0.800 '~~ 7.00

                                                                                                                -   P54A-(CS)

P54A-(CS) 6.00 CL 0.600 "' '\ 5.00 s-CL a, C) [3 867, 0.884 4.00 c

n,

 =&    0.400                                                                                                ::,
 >                                                                                                    3.00 (.)

2.00 0.200 1.00 0.000 0.00 0.000 2.000 4.000 6.000 8.000 Tim e in Se conds Slip(PU) and Speed(PU) 1.00 1.00 0.80 I I I 0.80

                                                                                                                -   P54A-(CS)

P54A-(CS) i

                                                                       /
                                                                     /

s- 0.60 I 0.60 s-CL CL

g: 16391 , 0.98 J =o-Q)

Q) iii C. 0.40 0.40 U) I' 0.20 I 0.20 I I I 0.00 0.00 0.000 2.000 4 .000 6.000 8.000 Time in Se conds L:\ El ectrical Analysis\EA-ELEC-E DSA-03 R2 LO CA w-offsite pwr (EC42422)\E lectronic fi les\App M-lCa_S U Plots-82.1-Z-l C. docx Page 3 of4

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D Appendix M-1Ca-SU Voltage(PU) and Current(PU) 7.00 - P54B-(CS) 0.800 111 P54B-(CS) 6.00

 - 0.600                                                             \                     5.00 0..                                                                                              0..

Q) 3.849, 0.886 4 .00

                                                                                                  ....C:

Cl cu

 ~ 0.400 I!!

J

 >                                                                                         3.00   u 2.00 0.200 1.00 0.000                                                                                 0.00 0.000             2.000            4.000             6.000                8.000 Time in Seconds Slip(PU) and Speed(PU) 1.00                                                                                 1.00
                                                                                                         -   P54B-(CS)

I 111 P54B-(CS) 0.80 0.80 0.60 0.60 5' 5' 0.. 0.. ,:;-

e:

iii 6.293, 0.98 Cl> Cl> C. 0.40 0.40 (/) 0.20 I I 0.20 I 0.00 0.00 0.000 2.000 4.000 6.000 8.000 Time in Seconds L:\Electrical Analysis\EA-ELEC-EDSA-03 RZ LOCA w-offsite pwr (EC42422)\E lectronic files\App M-l Ca_SU Plots-B2.l -Z- 1C.docx Page 4 of 4

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D Appendix M-1Da-SU Voltage(PU) 0.950

                                                                      -  Bus-1C
 ~ 0.900 QI                        1.150, 0.779 Cl
 ~   0.850 0.800 0.000            2.000       4.000      6.000         8.000 Time in Seconds Voltage(PU) 0.950
                                                                      -  Bus-1 C
 ~ 0 .900 QI Cl
 ~ 0.850 0

0.800 0.000 2.000 4.000 6.000 8.000 Time in Seconds Voltage(PU) 0.950

                                                                      -  Bus-1C
 ~ 0.900 QI Cl
 ~0 0.850 0.800 0.000            2.000       4.000      6.000         8.000 Time in Seconds L:\El ectrica l Ana lys is\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\E lectronic files\App M-lDa_SU Plots-82.1-Z.docx Page 1 of 4

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D Appendix M-1Da-SU Voltage(PU) 0.950

 ~ 0.900 Q)

Cl

 ~ 0.850 0

0.800 0.000 2.000 4.000 6.000 Time in Seconds Bus 1D Voltage(PU) 0.950

                                                                      -   Bus-10
 ~ 0.900 Q)

Cl !3.707 , 0.930]

 ~ 0.850 0

0.800 0.000 2.000 4.000 6.000 Time in Seconds Voltage(PU) 0.950

                                                                      -  Bus-10
 ~ 0.900 Q)

Cl [6.657 , 0.933 [

 ~ 0.850 0

0.800 0.000 2.000 4.000 6.000 Time in Seconds L:\El ectrica l Ana lysis\EA-E LEC-EDSA-0 3 R2 LOCA w-offsite pwr (EC42422)\ El ectronic fil es\A pp M-lDa_SU Plo ts-82.1-Z.docx Page 2 of 4

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D Appendix M-1Da-SU Voltage(PU) and Current(PU) 7.00 - P54A-(CS) 0 .800 *,' Ill P54A-(CS)

                                                                   " -........... ',                       6.00

_ 0 .600

i

                                                                                     ""\                   5.00

i a.. a..

Q) Cl 13.788, 0.884 I 4.00 cI!! ta

  ~ 0.400
  >                                                                                                        3.00 u 2.00 0.200
                                                                                         '~ ' \.r-1.00 0.000                                                                                                0.00 0.000               2.000              4 .000                        6.000             8.000 Tim e in Se conds Slip(PU) and Speed(PU) 1.00                                                                                               1.00
                                                                                                                        -   P54A-(CS)

Ill P54A-(CS) 0.80 0.80 0.60 0.60 5'

i a..

a.. ~ C: 16 396, 0.98 I Cl) Cl) iii a. 0.40 0.40 U) 0.20 0.20 0.00 -- 0.00 0.000 2.000 4.000 6.000 8.000 Tim e in Seconds L: \E lectri ca l Ana lysis\EA-ELEC-EDSA -03 R2 LOCA w -offsite pwr (EC4 2422) \El ectroni c fil es\App M-lD a_SU Plots-8 2. 1-Z.docx Page 3 of 4

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D Appendix M-1Da-SU Voltage(PU) and Current(PU) 0.800 7.00

                                                                                                                 -   P54B-(CS)

P54B-(CS) 6.00

                                                                           \
 -   0.600                                                                                          5.00

, 5a..

a.. Ql Cl 3.788, 0.887 4.00 ... C

  <a
 ~ 0.400
                                                                                                           ...2!

i

 >                                                                                                  3.00  u 2.00 0.200 1.00 0.000                                                                                          0.00 0.000                 2.000               4 .000             6.000                8.000 Time in Secon ds Sl ip(PU) and Spee d(PU) 1.00                                                                                         1.00 0.80                                                                                         0.80
                                                                                                                 -   P54B-(CS)

P54B-(CS) 0.60 0.60 5a.. a.. =c-C: 6.306, 0.98 (I) (I) iii C. 0.40 0.40 (/)

                                                                /
                                                              /

0.20 ' 0.20 0.00 0.00 0.000 2.000 4.000 6.000 8.000 Time in Seconds L:\El ectrica l Ana lys is\EA-ELE C-E DSA -03 RZ LOCA w-offsi te pwr (EC42422)\Electronic fil es\App M-lDa_SU Pl ots-B2.1-Z.docx Page 4 of 4

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1C - SG 1-1 Appendix N-1C Voltage(PU)

                                                       - Bus-1C 0.9700 5'

Cl.

  -go.9600
  ~

0

  > 0.9500 0.000    2.000         4.000    6.000 8.000 Time in Seconds Voltage(PU)
                                                       - Bus-10 0.9700

)

Cl.

 -go 9500
 ~

0

 > 0.9500 0.000    2.000        4.000     6.000 8.000 Time in Seconds Voltage(PU)
                                                       - Bus-1E

)

Cl. I1.119, 0.942 I

 -g 0.500
 ~

0 0.000 0.000 2.000 4.000 6.000 8.000 Time in Seconds L:\Electrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic files\App N-lC Plots-A4.l-1C.docx Page 1 of 2

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1C - SG 1-1 Appendix N-1C Voltage(PU) and Current(PU) 8.00

                                                                                   - P54C-(CS) 0.800                                                                         m P54C-(CS) 6.00 5    0.600                                                                    ::>

Cl. ai Cl 13 398, 1.01 1 Cl. C: 111 4.00 ~

~ 0400                                                                         ::i
>                                                                             u 2.00 0.200 0.000                                                               0.00 0.000        2.000           4.000         6.000        8.000 Time in Seconds P54C Slip(PU) and Speed(PU) 1.00                                                               1.00
                                                                                   - P54C-(CS) m P54C-(CS) 0.80                                                               0.80 0.60                                                               0.60 ::i

> Cl.

Cl. C: !3239, 0.98 I "C (1) (1) in 040 040 fli 0.20 0.20 j 0.00

              ~-~--~-~--~-~--~--~-~
              **-**                                                      0.00 0.000        2.000           4.000         6.000       8.000 Time in Seconds P54C L:\Electrical Analysis\EA-E LEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic files\App N-lC Plots-A4.1-1C.docx                                                                                  Page 2 of 2

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 10 Appendix N-1D Voltage(PU) 0.9700 5' a..

 ~09600                   [f143, 0.9401 j I'll 0
 > 0.9500 0.9400 0.000         2.000          4 .000         6.000         8.000 Time in Seconds Bus lC Voltage(PU) 0.9700 5'

a..

 ~0.9600
 ~

0

 > 0.9500 0.000         2.000          4 .000         6.000         8.000 Time in Seconds Bus 1D Voltage(PU) 5' a..
 ~ 0.500                                  13.473, o.96o I
 ~

0 0.000 0.000 2.000 4.000 6.000 8.000 Time in Seconds Bus lE L:\Electrica l Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic fil es\App N-10 Plots-A4.l-1D.docx Page 1 of 2

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D Appendix N-1D Voltage(PU) and Current(PU) 8.00

                            *~                                                                               -    P54C-(CS) 0.800
                               ", 's.

111 P54C-(CS)

                                         \                                                       6.00 5'    0.600                                                                                         ::J a..

a, Cl 13.386, 0.959 I ... a.. C

   <ti                                                                                           4.00  Q) t:
  ~ 0.400                                                                                              ::,
  >                                                                                                   u 2.00 0.200 0 .000                                                                                    000 0.000             2.000                   4.000       6.000                 8.000 Time in Seconds P54C Slip(PU) and Speed(PU) 1.00                                  \:..                                              1.00
                                                                                                             -    P54C-(CS) 111  P54C-(CS) 0.80                                                                                    0.80 0.60                                                                                    0.60 5' 5'

a.. a..

e: 13253, 0.98 I "O in al C.

0.40 0.40 V) 0.20 0.20 0.00 0.00 0.000 2.000 4.000 6.000 8.000 Time in Seconds P54C L: \ El ectri cal Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\El ectronic fil es\App N-10 Pl ots-A4. l -1D.docx Page 2 of 2

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1C - SU 1-2 Appendix 0-lC Voltage(PU)

                                                            - Bus-1C

, 1.203, 0.9320

!::.0.9600 Q)

Cl

0 0.9400 0.000 2.000 4.000 6 .000 8.000 Time in Seconds Bus lC Voltage(PU)

, 1.203, 0.9338

!::.0.9600 Q)

Cl

0 0.9400 0.000 2.000 4.000 6.000 8.000 Time in Seconds Bus 1D Voltage(PU)

                                                            - Bus-1E

, 11.203, 0.936 a.

i 0.500

0 0.000 0.000 2.000 4.000 6.000 8.000 Time in Seconds Bus lE L:\Electrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic files\App 0-lC Plots-84.1-lC.docx Page 1 of 2

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1C - SU 1-2 Appendix 0-1C Voltage(PU) and Current(PU) 8.00

                                                                                    -    P54C-(CS) 0.800                                                                          111  P54C-{CS) 6.00 I

5 0.600 \

                                       \                                       5 Q.                                      l                                      Q.

QI OJ I 3.451 , 1.01 i: 4.00 ~

 <II I
~ 0.400                                   l                                     ::s
>                                                                              u 2.00 0.200 0.000                                                                0.00 0.000          2.000                 4.000         6.000 8.000 Time in Seconds P54C Slip(PU) and Speed(PU) 1.00                                                                1.00
                                                                                    -    P54C-(CS) j f                                                  111  P54C-(CS) 0.80                                                                0.80 0.60                                                                0.60 5 5

Q. Q.

g: [3.287, 0.98 J -0 Q)

Q) in 0.40 0.40 ~

0.20 I I 0.20 I I 0.00 I 0.00 0.000 2.000 4.000 6.000 8.000 Time in Seconds P54C L:\Electrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic files\App 0-lC Plots-84.1-lC.docx Page 2 of 2

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D Appendix 0-1D Voltage(PU) 0.9800 5' ll.. w0.9600 Cl

0 0.9400 0.000 2.000 4.000 6.000 8.000 Time in Seconds Bus lC Voltage(PU) 11196, 0.9344 0.9400 0.000 2.000 4.000 6.000 8.000 Time in Seconds Bus 1D Voltage(PU) ll..

-g 0.500              [1 711 , 0.939
~

g 0.000 0.000 2.000 4.000 6.000 8.000 Time in Seconds Bus lE L:\Electrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic files\App 0-10 Plots-84.1-10.docx Page 1 of2

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D Appendix 0-1D Voltage(PU) and Current(PU)

                                                                       - 8.00
                 .~~                                                                -    P54C-(CS) 0.800                ',                                                        Ill  P54C-(CS)
                                                                       - 6.00
                                  \  )

5' 0.600 \ 5' a. QI Cl 111

~ 0.400 3.432, 0.957 I                -4.00  -

a. C

                                                                               ~
>                                                                             u
                                                                       - 2.00 0.200 0.000                                                             - 0.00 I               I               I             I        I 0.000           2.000           4.000         6.000    8.000 Time in Seconds PS4C Slip(PU) and Speed(PU) 1.00                                                               1.00
                                                                                    -    P54C-(CS)

I I m P54C-(CS) 0.80 I 0.80 0.60 0.60 5' 5' a. a.

g: 3.276, 0.98 I ,5' Cl)

Cl) iii 0.40 C. 0.40 1/l 0.20 J 0.20 I

I I 0.00 0.00 0.000 2.000 4.000 6.000 8.000 Time in Seconds P54C L:\Electrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic files\App 0-10 Plots-B4.l-1D.docx Page 2 of2

EA-ELEC-EDSA-03, Rev 2 Appendix Q LOCA Load Flow and ECCS Motor Start Analysis Page 1 of 8 Event Manager Cases for Multiple-Motor Starting and Transient Stability Scenarios Multiple motor starting routine is selected from "Analysis/Power Flow/Advanced Motor Starting. Transient Stability is selected from "Analysis/Advanced Transient Stabi lity. Scenarios and Case Studies are selected next from the drop down selections on screen . Overall view of Case Studies is shown below. [§] EDSA Tra nsie nt Data and Event Manager - 03_LOCA_R2(RevCC)

Add X. Delete ra Copy II Paste El**!=l Transient Data No. Case Stu

      /*****cl Machine                                     Case Study A2-Z_

S**cl Event 2 Case Study 82-Z_ 1 / *

l!:l Case Study A2-Z_

3 Case Study 82.1-Z_

              ,           Case Study 82-Z_

4 Case Study M.1 / 84.1_ L.. cJ Case Study 82.1-Z_ 5 Case Study A2-Z-1C_

               ***cl Case Study M .1/ 84.1_

6 Case Study 82-Z-1C_

               ****ID Case Study A2-Z-1C_
              .           Case Study 82-Z-1C_           7  Case Study 82.1-Z-1C_
              /** **cl Case Study 82.1-Z-1C_            8  Case Study 82-Z_iso 1D
              /****r::J Case Study 82-Z_iso10           9  Case Study 82-Z_iso CD
              /****rt='.J Case Study 82-Z_iso CD        10 Case Study 82.1-Z_iso_CD

,.. fa Case Study 82.1-Z_iso_CD 11 Case Study 84 .1_iso _CD

              /***fa Case Study 84.1 _iso_CD            12 Case Study 82-Z_isoCD_C
              /*****cl Case Study 82-ZJsoCD_C           13 Case Study 82.1-Z_isoCD_C L...cJ Case. Study 82.1-ZjsoCD_C 1*****1!:l Relay
      /* ***lei Breaker
      /***** cl Fuse
      /-***cl Static Var Compensator(SVC)
      !**

fa Under Load Tap Oianger(ULTC)

      !* * *fa Motor Operated Valve(MOV)
      !* *** fl Fault Isolation Unit(FIU) 1*** *Cl Static .Automatic Bus Transfer(SABl
      /****el Static Frequency Converter(SFC)
      /** *el Transformer Inrush Simulation(TIS)
      /*** cl Doubly Fed Induction Generator(DF
      !*****lcl Photovoltaic & lnverter(PV Model) ,..
                              !.II               ._

EA-ELEC-EDSA-03, Rev 2 Appendix Q LOCA Load Flow and ECCS Motor Start Analysis Page 2 of 8 Case Study 1; A2-Z_ (transient stability scenario 5-A2/B2-TS-1D)-SGT 1-1 feed mJ EDSA Tran>ient Data and Event Manage,- 03_LOCA..R2(R...cCJ

      ~            'X        ~

Add Delete Copy Pa,:te a-eJT-Data No . Case Evert r, From Bu, Name To 9Js Name Qcul; No. Evert T, t£J i-Ev..t

          . L-CJ Case Study A2-Z_

1 Case Study A2-Z_ Case Study A2-Z_ Case Study A2-Z_ BranchT""""" BrandiT""""" BranchT-MCC-1-X-lN MCC-2-X-lN P>s.\-lN MCC-1-X*Z MCC-2-X-Z PSSl\*Z 0.00000 0 00000 0.00000 . l '- *EJ Case Study 82-Z_ Case Study A2-Z_ BrandiT- P558-IN P5SB-Z 0 00000

                !--0 Case Study 82 1-Z_                         5   Case Study A2-Z_  BranchT-         PS6A-lN       P56A-Z                0 00000 L-@J Case Study M .1/84.1_
                - -(::) Case Study A2-Z-1C_                         Case Study A2-Z_  BrandiT-         P568-lN       PS68-Z                0.00000 i-eJ Ca,e Study 82-Z-lC                         13  Case Study A2-Z_  Start Motor      PS2B-fX)                            I 00000
                ~ ) Case Study 82. l*Z* lC_                    14  Ca,e Study A2-Z_  Start Motor      P52C-fX)                            1.00000 0 Case Study 82-z_,..10                     15  Case Study A2-Z_  StartMotoo-      PS4A-f;S)                           1.00000 H ! l Case Study 82-Z iso CD                    16  Case Study A2-Z_  Start Moto,-     P54B-f;S}                           1.00000 I fil Case Study 82.1-Zjso_CD                   20  Case Study A2-Z_  StartMotoo-      PGGll-(HPSQ                         1.00000
                , CJ Case Study 84.l_bo_CD                      21  Case Study A2-Z_  StM Motor        P66B-(HPSQ                          100000 f* *CJ Case Study 82-Z_iooCD_C                  22  Case Study A2*Z_  Start Mato,-     P67A--0.PSQ                         1 00000 i          CJ Case Study 82.1-ZJsoCD_C                 23  Case Study A2-Z_  Start Moto,-     P67B-(LPSQ                          1 00000 i"  CJ Relay                                           24  Case Study A2-Z_  Start Motor      PlC-{SW)                            I 00000 r*El       Break..-                                    7   Case Study A2-Z_  BrandiT-         PS5MN         PSSA-Z                1 77400 i- CJ      Fuse                                        17  Case Study A2-Z_  Start Moto,-     P>s.\                               1.77400 L. [) Slaoc Var Con<>=alo,jS\C)                        8   Case Study A2-Z_  BrandiT-         P558-IN       PS58-Z                1 SC000
         ~ [) Under Load Tap Chanoe<(ULTC) 26  Case Study A2-Z_  Start Motoo-     P5SB                                1.84000
         " (:] Motoo- Operated Valve(MOV) 11  Case Study A2-Z_  BranchT-         PS6MN         PS6A-Z                2.08900
         ,--1!:) Fa.I Isolation lht(FILQ 18  Case Study A2-Z_  Start Moto,-     PS6A                                208900
         ~ £) Slatic Afomatic ll.Js Tranofe,(SABT) 12  Case Study A2-Z_  BranchT,-,g      PS68-lN       PS68-Z                3 72900
         '-£1 Slaoc """"'1<Y Converte,(SFC)

Tranofonn..- nu.h Smuation(TIS) 19 Case Study A2-Z_ StartMotoo- PS6B 3.72900 i 1---eJ Dot.t,iy Fed n<Lction Gen..-ato,(DFIG) 9 Case Study A2-Z_ &anchT,-,g MCC-1-X-lN MCC-1-X-Z 3.91600 H~J Photowl..: & hverte,(l'V Model) 25 Case Study A2-Z_ Start Motor lo<<:C-1-X 3.91600 L QGenen,!Model 10 Case Study A2-Z_ BranchTIWl"O MCC-2-X-lN MCC-2-X-Z 4.09500 27 Case Study A2-Z_ Start Motor lo<<:C-2-X 4 09500 OK Cancel Case Study 2; B2-Z_ (transient stability scenario 5-A2/B2 -TS-1D)-SUT 1-2 feed 'I2] EDSA Transient Data and Event Manager -03_LOCA_R2(RevCC} I

   ~            'X                   II Add        Delete       Copy     Pa ,te El-      Tronoiert Data                                  No . Case              Evert T          From lkJs Name To Eu Name  em. No . Evert Tome Machine                                          Ca,e Study 82-Z_  llr¥1d,Trippr>g  MCC-1-X-lN     MCC-1-X-Z             000000 er2:

I 1 Evert Case Study 82-Z_ lhnchTnppng MCC-2-X-lN MCC-2-X*Z 0.00000

              !-- (:] Case Study A2*Z                              Case Study 82-Z_  llr¥1d,Tnppng    PS5A-IN        PSSA.Z                0.00000 f-r!:J Case Study B2*Z=                         4     Case Study 82-Z_  &anch Trippng    P551l-lN       PS5B-Z                0.00000
       !     !-i!J Case Study 82.1-Z_                        5     Case Sludy 82-Z_  llr¥1d,Tnppng    PSG.'.-IN      P56A-Z                0.00000 i     f-CJ Case Study 1\4.1/841_

f-* Case Study A2-Z-1C_ 6 Case Study 82-Z_ &anchTrippn;i PSGB-lN PS68-Z 0.00000 I I r-D CaseStudy82-Z-1C_ Ca,e Study 82.1-Z-lC_ 13 14 Case Sludy 82-Z_ Case Study 82-Z_ Start Moto,- St<Yt Motor P528-fX) P52C-fX) 1 00000 1 00000 r-CJ Case Study 82-Z_a.10 r- CJ Case Study 82-Z_bo CD 15 16 Case Study 82-Z_ Ca,e Study 82-Z_ Sl"1 Motor Start Motor PS,,IM:Sl P548-f;:S) 1.00000 100000 f--EJ Case Study 82.1-Z_bo_CD 20 Case Study 82-Z_ Sl"1 Motor P66MHPSQ 1.00000 Case Study 84.1 iso CO 21 Ca,e Study 82-Z_ Start Motor P668-(HPSQ 1.00000

      !      l-0      ea.. Study a2-z: 1soCo_c               22    Case Study 82-Z_  Start Motor      P67A-jl1'SQ                          1.00000 I      LCJ      Case    Study 82.1-Z_iooCD_C           23    Case Sludy 82-Z_  Start Motor      P678--0.PSQ                          1.00000 1-i::::i Relay                                         24    ea.. Study 02-2_  St"1 Moloo-      PlC-{SW)                             1.00000 i-1::JBreak..-                                         7     Case Sludy 82-Z_  lhnchTnppng      PS5A-lN        PSSA.Z                2.03200
      ;--[:) Fuse                                            17    Ca,e Study 82-Z_  Start Motor      PS5A                                 2.03200
       "-*CJ Slat<: VarCompensater(S\C)                      8     Case Study 82-Z_  BranchTnppng     P551l-lN       PSSB-Z                2.16600
      !__ (::) l.lider l.oad Tap Cl,anoe,1\JL TC) 26    Case Sludy 82-Z_  Start Mota,      P558                                 2.16600 L QJ Motor Operated Valve(MOV)                          11   Case Study 82-Z_  hlchTrippi,g     P56.'.-lN      PS6A*Z                2.54500 H:1:J Faul bolotlon l.ht(FILQ                          18    Ca,e Sludy 82-Z_  Start Motor      PS6A                                 2 54500 H'.!l Stliic Afomolic ~. Transfer(SABT)                12    Case Study 82-Z_                   PS61l-lN       PS68-Z                3.98800
      ;--CJ Static ~Converter(SFq                                                    hlchT-r E:l Tranofonn..- nu.h s....;_,(TISJ                  19    ea.. Sludy 02-2_  Start Motor      PS68                                 399800 9     Case Study 82-Z_  hlchT-           MCC-1-X-lN     MCC-1-X-Z             4.18200 1- -fil] Dot.t,iy Fed incl.Jction Generalo,(DFIG)      25    Case Study 82-Z_  ~art Motor       MCC-1 -X                             4.18200

- [J Photovol""° & lnverte,(l'V Model)

      '-CJ General Model                                     10    Ca,e Study 82-Z_  ElranchT.....,,, MCC-2-X-lN     MCC-2-X-Z             4.36100 27    Case Study 82-Z_  Sl"1 Motor       MCC-2-X                              4 36100 OK                      Cancel

EA-ELEC-EDSA-03, Rev 2 Appendix Q LOCA Load Flow and ECCS Motor Start Analysis Page 3 of 8 Case Study 3; B2.1-Z_ (tran sient stab ility scenario 5-A2/B 2-TS-1D)-SUT 1-2 feed -mJ EDSA Transient Data and Event Manager* 03_lOCA"")U:(RevCC)

                                                                                                   *                            --r                              ll!i*k'                ~
  ~             )<        [@l I

Add Delete Copy B **CJ Transieri Dai a i- -f:J Macooe P11ste No . I Ca,e '>udv Case Study 82.1-Z_ I Ever<T-Branchl-I FromaJ<Name MCC-1.X.IN I ToaJ<Name MCC-lXZ I OroA No. I 8tet1 Tme'*-' I 8tet1 """"'"'secl 1 0.00000 cii CJ Evert Case Study 82.1-Z_ &.nchl- MCC-2*X4N MCC-2.X.Z 0.00000

Ho ease study Au_

3 Case Study 82 H _ BranchT- PS5A-IN P55t\.Z 0.00000 Hi::J ease Study 0n Case Study 82.H_ Branchl- PS5B-IN P55S.Z 0.00000

              ~.. EJ ease Study 02.1-z Ca,e Study 82 H _                          P56A-IN               P56A*Z                       0.00000
              ~..CJ Case Study M .1/84.1                                              BranchT-
              ~CJ CaseStudyA2.Z.1C_ -                     6     Case Study 82.1-Z_    BranchT-             P568-IN               P56S.Z                       0.00000 14   Ca,e Study 82.H_      Slart Motor          P52fl.fX)                                          1.00000 Hw ease Study 0n 1c f-lEJ Case Study 82.J.Z*lC                   15   Case Study 82 H_      Slart Motor          P52C~                                              1.00000
             ~*-CJ ease Study 0n ;so 10                    21   Ca,e Study 82. H_     St"1M<M<             P66(>..{HPSQ                                       1.00000
              ~-[J Case Study 82-£ ;,. CD                  22   Case Study 82.H_      Start Mcto,          P66B,{HPSQ                                         1.00000
              ~-[J Ca,e Study 82.1-Z_;so_CD               23    Case Study 82.1-Z_    Start Motoc          P67A,(LPSQ                                         1.00000
              ~-[J ease Study 84.1_;,o_co                  24   Ca,e Study 82.H_      Start Motor          P678,(LPSQ                                         1.00000
              ~..f:J ease Study 0n ;soeo c                 25   Case Study 82.H _     St"1 Motor           PiC{SW)                                            1.00000 L..[J Case Study82.1-Z_;soeo_c                11   Ca,e Study 82. l*Z_   BranchT-             PS5A-IN               PS5A*Z                       1.67500
       !*-f:J     Relay                                    18   Case Study 82 l*Z_    Slart Motor          P55A                                               1.67500
       !--:)     Breaker                                  12   Ca,e Study 82. H _    &arx:hT-             PS5S.IN               P558*Z                       1.n500
       !--El      Fuse                                    'll   C... Study 82.l*Z_    Start Motor          PS5B                                               1.n500
       !--IE:J Static Var Compensala<jS~                  9     Case Study 82. H _    &arx:hT-             P56A-IN               P56A*Z                       1.82000 lkider Load Tap Oiange,(IJL 1C) 19   C... Study 82 l*Z_    St!lrt Motor         P56A                                               1.82000
       !--el Motor Op"""ed Valve{MOV)                      10   Case Study 82.H _     &arx:hT-             P56S.IN               P56S.Z                       327400

[--1::) Faul Isolation U.(FIIJ) 20 Case Study 82 l*Z_ Start Motor P568 327400

       !-.-1::) Static t>tiomatic aJS Transfe<(SABn             Case Study 82.H _                          MCC.J.X4N
       ;...:J Static F'"'1,IOflCY Corverte<(SFC)          7                          &arx:hT-                                   MCC-lX Z                     3.52400
       !--eJ Ttanoformer Inrush SmJallon(TIS)              2G   Case Study 82.1-Z_    Start Mota           MCC+X                                              3.52400

(...e:J CloLi,ly Fed n<>tCti<ln GeneraiO<{DFIG) 8 Case Study 82.H _ &arx:hT- MCC-2*X*IN MCC*2.X.Z 3.64100 i..-~ Photovola,: & nverte<(PV Model) 13 Case Study 82.H_ Start Mcto, MCC-2*X 3.64100 L.~ General Model 16 Case Study 82.1-Z_ Start Motor P54/\~) 3.70700 17 Case Study 82.H_ Start Motor P54~) 3.70700 OK Cancel Case Study 4; A4.1/B4.1_ (transient stability scenario 6-A4/B4-1D)-(SGT 1-1 or SUT 1-2 feed) or (transient stability scenario 10-A4/B4-1C)-(SGT 1-1 or SUT 1-2 feed) When the scenario is the SUT 1-2 feed, the branch addition is changed from 152-302-LS to 152-303-LS.

 ~Xl@JIA Add        Delete       Copy      Pa,te B **l!J Transient Oala                                     No. Case                         Evert T               From El.is Name      To au. Name          CroJit No. Evert 11    ec    Evert f- (c) Machole                                          1    Case Study A4.1/B4.1_ Branch Addi1ion              152-302*LS           Bu,-1 E                          1.00000
     ~H~I         Evert                                       2    Case Study M .1/84.1_ Start Motor                  P54C~)                                                1.00000
      . !*cJ Case Study A2-Z_

l....eJ Case Study 82-Z_ i -1!:J Case Study 82.1-Z_ j...eJ Case Study A4.1/B4.1_ j.. G:::J Case Study A2-Z* 1C_

            ,... r..:J Case Studv 82-Z-lC

EA-ELEC-EDSA-03, Rev 2 Appendix Q LOCA Load Flow and ECCS Motor Start Analysis Page 4 of 8 Case Study 5; A2-Z-1C_ (transient stability scenario 9-A2/B2-TS-1C)-SGT 1-1 feed mJ EDSA Transie nt Data and Event MaMger - 03_LOCA_R2{RMC} B*li'.:l T.......rtData No. I Case "" ""' I Evert T= I To Effl Name I CmA No. I Evert Tmeisecl I Evert o..ationfsec f C] Macnne CaseS1udyA2-Z-1C_ llranch T,wno MCC-1-XaN MCC-1-X-Z 0.00000 13 C] Evert C... Study A2-Z-1C_ llno1ch Tiwng MCC-2-XaN MCC-2-X-Z 0.00000 i H!!l Case Study A2-Z P55A-IN P55A-Z 0.00000 i ~ E:] Case Study B2-Z= Case Study A2-Z-1C_ Case Study A2-Z-1C_ llno1ch T"""1!1 llranch T- PSSC-IN P55C-Z 0.00000

               }- 11:J Case Study BHZ_                              C..e Study A2-Z-1C_   &,r,ct, T"""1!1   PS6A-IN           P56A-Z                   0.00000 f [J Case Study M .1/ B4.1_                          Case StudyA2-Z-1C_    Branch T -        P568aN            P56B-Z                   0.00000
               !-* EJ Case Study A2-Z-1C
               ~- (:j Case Study B2-Z-<                       11    Case Study A2-Z-1C_   Start Motoo-      P52A~                                       1.00000 j- l!J Case Study B2.1-Z-1C_                    12   C...SludyA2-Z-1C_     9art Motoc        P52C~                                      1.00000 i *l!J Case Study B2-Z_iso 10                  13    Caoe Study A2-Z-1C_   Start Motoc       P54A~                                       1.00000
               ;..*E:J Case Study 82-Z_iso CD                 14    Case Study A2-Z-1C_   Start Motoc       P548~ )                                    1.00000 i- -EJ Case Study B2.1-Z_iso_CD                15    C... Study A2-Z-1C_   Start Motoo-      P55A                                       1.00000 1-- 1:;J Case Study B4.1_iso_CD                16    Case Study A2-Z-1C_   Start Motoc       P67A{LPS1)                                 1.00000
               ~          Case Study B2-ZJooCD_C               17   Case StudyA2-Z-1C_    9art Motoo-       PSSC                                       1.00000 L      el Case Study B2.1-ZJ,oCD_C              18   Case Study A2-Z-1C_   Slart Motoo-      P67B-{U'SQ                                 1.00000
      .               Relay                                    19   C..e Study A2-Z-1C_   Slart Mot..-      P78-(SW)                                   1.00000 i*-*e:J ~'""                                          24    Case Study A2-Z-1C_   Start Moto,       P66A-{HPS1)                                1.00000 f-** C::I Fuse                                         25    C... Study A2-Z-1C_   Start Motoc       P668-(HPSQ                                 1.00000

[ i!J Static Va, Con'l)ensator(S\q 9 Case S1udyA2-Z-1C_ !ralc:hT- PS6A-IN P56A-Z 1.86500 t (!) lk1ded.oad Tap0,'"19e,(ULTQ 20 Case 9udy A2-Z-1C_ 9art Motoc P56A 1.116500

      '-** El         Moto, Operated Vaive(MOV)                10   C...StudyA2-Z-1C_     BranchT-          P56S-IN           P56B-Z                   172100 f- CJ          Faul isoi,t;on U-.(FIU) 21    Case StudyA2-Z-1C_    Start Moto,       P568                                       3.n,oo
      ;._ E:] Static AJlomatic b Tran,!e,(SABl) 7    Case Study A2-Z-1C_   !ralc:h T,win!j   MCC-1-X-IN        MCC-1-X-Z                3.91200

E::J Static Frequency Converte,(S FQ MCC-1-X

      '-              Tran,lonne, rrush SmJation(TIS)         12    Case StudyA2-Z-1C_    9 art Moto,                                                  3.91200
      ,               Ooci,/y Fed Induction Genen,tor(DFIG)   8     Case Study A2-Z-1C_   !ralc:h Tiwng     MCC-2-X4N         MCC-2-X-Z                4.06900 i- -ILi Photovolac & lnvertet(PV Model)                  23   Caoe Study A2-Z-1C_   9art Moto,        MCC-2-X                                    4.()6900
      '.. 12:J G.neratMode!
                                                                                                                                                                                   .J OK                               C.,ncel Case Study 6; 82-Z-lC_ (transient stability scenario 9-A2/B2-TS-1C)-SUT 1-2 feed I'§] EDSA fransient Data and Event Manager - 03_LOCA_R2(R,,,cCJ
  ~                 )<        [@I      IA Add           Oelrle       Copy     Parte 8**J        Tran,;ertOata                                 No. I Case .,,..,         I Evert T,oe      I From Bus N"""'  I To Bus Name  I CmA No. I Evert  Tme'-' I Evert o....oon,sec i El           Machine                                       Cose Study B2-Z-1C_   Branch T-         MCC-1-XaN         MCC-1-X-Z                0.00000 13 ei            Evert                                    2    Case Study 82-Z-lC_   llnolchT-.,       MCC-2-XaN         MCC-2-X-Z                0.00000 i-- e:J Case Study A2-Z                        3    Case Study B2-Z-1C_   &,r,ct,T,wing     P55AaN            P55A-Z                   0.00000                             1, 1-(!J Case Study B2-Z=                              Case Study B2-Z-1C_   Branch T,wing     P55CaN            P55C-Z                   0.00000 4

i 1--IL) Case Study B21-Z_ 5 Caoe Study B2-Z-1C_ Branch T,wing P56A-IN P56A-Z 0.00000 H:J C.seStudyAA.1/841 6 Case Study B2-Z-1C_ Elranch T,wing P56B-IN P56B-Z 0.00000

                ~-*@l Case Study A2-Z-1C_ -

f-*i:=l c,,. Study B2-Z-1C_ 13 Case Study B2-Z-1C_ Sta"t Ma:or P52Am 1.00000 1--***El Case Study B2.1-Z-1C_ 14 Case Study 82-Z-lC_ StartMoto, P52C~ 1.00000

       !                                                       15   Case Study B2-Z-1C_   Start Motor       P54A~)                                     1.00000 f-*el Case Study B2-Z isolD
                ~- el Case Study 82-i_iso CD                   16   Case Study B2-Z-1C_   Start Moto,       P54~                                       1.00000 L.        Case Study B2.1-Z_iso_CD             18   Case Study B2-Z-1C_   Start Moto,       P67A-(LPS1)                                1.00000
                ~--CJ Case Study B4.1_iso_CO                  20    Case Study 82-Z-lC_   StartMoto,        P67B-(LPSI)                                1.00000
                ;         Case Study B2-Z_isoCD_C             21    Case Study B2-Z-1C_   StartMoto,        P7B-(SWJ                                   1.00000
                '-1!:J Case Study B21-Z_isoCD_C                2G   Case Study B2-Z-1C_   Start Mot..-      P66A-(H PS1)                               1.00000
       '* -E:l Relay                                          27    Case Study 82-Z-lC_   Start M1or        P668-(H PS1)                               1.00000
       !-c:i Bn,ake,                                          8     Case 9udy B2-Z-1C_    lhnch T- . ,      PSSCaN            PSSC-Z                   1.56000 j..... EJ Fuse                                          19   Case Study 82-Z-lC_   StartMoto,        P55C                                       1.56000 i- CJ Static Var Coo-,,ensator(S\q                      7    Case Study 82-Z-lC_   Branch T -        P55A-IN           P55A-Z                   1.59500 j ~ Llnde,- load Tap ~LTC)                              17   Case Study 82-Z-lC_   Start Moto,       P55A                                       1.59500
       !***el Moto, Opeiated Valve(M()V)                       11   Case Study 82-Z-lC_   Branch T-         P56AaN            P56A-Z                   228000

[ .£:J Faul Isolation U-.(FILQ 12 Case Study 82-Z-lC_ Start Mot..- P56A 2.28000 [ -2) Static "'-lomatic Bus Transler(SABl) 12 Case Study B2-Z-1C_ BranchT- P568aN P56B-Z 3.98400 [ -[!) Static Frequency Converter(SFC) 23 Case Study 82-Z-lC_ Start Moto, P56B 3.98400

       '- -(c] Transl- rrush SmJaoon(TIS) 9     Case Study 82-Z-lC_   lhnch T,wing      MCC-1-XaN         MCC-1-X-Z                4.16800 i* **el Ooci,/y Fed rlO.JCIK>n -or(DFIG) i* *fe:J* Photovolaic & lnverter(PV Model)             24    Case Study B2-Z-1C_   Start Mote,       MCC-1-X                                    4.16800 L*..eJ General Model                                    10   Caoe Study B2-Z-1C_   !ralc:h T-        MCC-2-X-IN        MCC-2-X-Z                4.30000 25    Case Study B2-Z-1C_   Start Mot..-      MCC-2-X                                    4.30000 OK                               Cancel

EA-ELEC-EDSA-03, Rev 2 Appendix Q LOCA Load Flow and ECCS Motor Start Analysis Page 5 of 8 Case Study 7; B2 .l-Z-1C_ (transient stability scenario 9-A2/B2-TS-1C)-SUT 1-2 feed [§.I EDSA Transifflt 0.... and [Y<!nt Manager - 03_LOCA_R2(RovCC) El -D Transiert Data 1.- C]Madroe E/) CJ Evert

                     !-       Case Study A2-Z_

No . !Case ...... 1 2 3 Case Study 82.1-Z-lC_ Case Study82.1-Z-1C_ Case Study 821 -Z-lC_ Brand, T-I Evert Tvoe Brand, T""""" Brand, T,wo,g I Ftcm &is Name MCC-1-XJN MCC-2-X-IN P55A4N I TobName MCC-1-X-Z MCC-2-X-Z P55A-Z 1 1 1 0.00000 0.00000 0.00000 [ ~- e] Case Study B2-Z_ i f EJ Case Study B2.1 -Z_

                     ,- EJ Case S1udyA4.1/B4.1_

4 5 CaseStudyB2.1-Z-1C_ CaseStudy821 -Z-1C_ Brand,T-Brand,T-P55C4N P56A-IN P55C-Z P56A-Z 1 1 0.00000 0.00000

              ' ~--D          Case Study A2-Z-1C_                6     Case Study B2.1*Z-1C_     Brand, T -       P-N              P568-Z          1         0.00000 1- D Case Study 82-Z-lC_                    11    Case Study B2.1-Z-1C_     Start Motor      P52MX)                                     1.00000 i ;- {:] Case Study B2.1-Z-1C_                     12    Case Study B2.1-Z-1C_     Start Motor      P52C-fX)                                   1.00000
             ,.'     i- (;] Case Study 82-Z ;solD                15    Case SludyB21 -Z-1C_      Start Motor      P55A                                       1.00000 i (;] Case Study 82-Z_;so CD                18    Case Study B2.1-Z-1C_     Start Motor      P66A,(HPSI)                                1 00000 I i*- *C:J Case~B2.l-Z_iso_CO                      19    CaseStudyB21-Z-1C_        StartMolor       P668,(HPSQ                                 1.00000

i CJ Case Study B4.1_;so_CD 20 Case Study B2.1-Z-1C_ Start Motor P67A,<LPSQ 1.00000

              ! !.. CJ Case Study 82-Z_isoCD_C                   21    Case Study B2.1-Z-1C_     Start Motor      P7B.;5W)                                   1.00000 i

i "- D Case Study 82 1-Z_...CO_C

             ! l:]

I::) Relay Breaker [ ] Fuse EJ Static v.. ~,atOl(S\C) 24 25 9 16 10 Case Study B2.1-Z-1C_ Case Study B2 1-Z-lC_ Case Study 821-Z-lC_ Case Study B2 1-Z-1C_ CaseStudyB21-Z-1C_ Brand, T-Start Motor Start Motor Start Motor

                                                                                                 &onchT-P55C P678,<LPSQ P56A-IN P56A P5684N P56A-Z P568-Z 1

1 1.00000 1.00000 1 76200 1.76200 3.27700

             '* CJ       Lllder Load Tao °""1g,r(1JLTC)          17    Case Study B2 1-Z-lC_     Start Motor      P568                                       327700 eJ     Molar Operated Valve(MOV) 7     Case Study B2.1-Z-1C_     &onch T -        MCC-1-XJN        MCC-1-X-Z       1         3.51500
             ' el        F...<< Isolation U-.(FIU) 22    Case Study B2.1-Z-1C_     St<Wt Motor      MCC-1-X                                    3.51500
             , CJ        Slab< Aliomatic &is Transle,jSABT)

Slatic frequency Conv.rte,jSFC} 8 Case5tudyB2.1-Z-1C_ BranchT- MCC-2-XJN MCC-2-X-Z 1 3.61800

             ;- CJ       T..-.lonne-nwh~S)                       23    Case Study B2 1-Z-lC_     Start Motor      MCC-2-X                                    3.61800 i CJ        Doubly Fed lnruction -o,{OFIG) 13    Case Study 82 1-Z-lC_     Start Molar      P54A,f3)                                   3 71000

1. 0 Pholovoltak: & nverter(PV Model) 14 Case Study 82 1-Z-lC_ Start Motor P548,f3) 3.71000 e:::i Genen,i Model Ill OK I Cancel j Case Study 8; B2-Z_iso1D (transient stability scenario 5-A2/B2-TS-1D)-SUT 1-2 feed

[§.I EDSA Tra ~ t Daia and E"""t Manager- 03_LOCA_R2(RevCC)

    ~                 )<        I@         fl Add            Oel!t~       Copy     Pa-ste EJ.. (;;] Transiert Oala                                  No. I Case..,..,              I EvertTwe       I From&isN,rne   I To &is Name   I Otu No. I Evert Trnelsecl I Evert DLraloolse 1._ . _                                             1      Case Study 82-Z_;solD     BranchT-         MCC-1 -XJN       MCC-1-X-Z       1         0.00000 EJ-0           Evert                                  2      Caoe Study 82-Z_;so 10    BranchT-         MCC-2-XJN        MCC-2-X-Z       1         0.00000
           ' !-'* (:]

Case Study A2-Z_ Case Study 82-Z_osolD 3 BranchT- P55A-IN P55A-Z 1 0.00000 i e:J Case Study B2-Z_ 4 Case Study B2-Z_;so 10 BranchT- P55BJN P55S-Z 1 0.00000 L i i D ea,. el Case Study 82.1-Z_ s Case Study 82-Z_;solD &anchT- P56A-IN P56A*Z 1 0.00000 i Study M .1184.1 i- el Case StudyA2-Z-1C_ - 6 Case Study B2-Z_iso10 Brand,T""""" PS68-IN P568-Z 1 0.00000 I i 13 Case Study 82-Z_oso 10 Start Motor P528-fX) 1.00000 i

                   '*  CJ   Case Study 82-Z-1C_
                   !**-D Case Study 82.1-Z-1C_                 14     Case Study 82-Z_IOO 10    Start Mctor      P52C-fX)                                   1.00000
          'i       cD       Ca,e Study 82-Z_ioolD              15     Case Study 82-Z_oo 10     Start Molor      P54A,f:Sl                                  1.00000 fD       Case Study 82-Z_;so co             16     Case Study 82-Z_ioo 10    Start Motor      P548,f:Sl                                  1.00000 D    Case Study 82.1-Z_;so_co           20     ea.. Study 02-z_..., 10   Start Motor      P66A,(HPSQ                                 1.00000 I       HD       Case Study 84.l_;so_CD             21     Case Study 82-2.!SO 10    Start Motor      P668,(HPSI)                                1.00000
          '

CJ Case Study 82-Z_...co_c 22 Case Study 82-Z_,so 1D Start Molor P67A,<LPSO 1.00000

' i '-~ Case Study 82. 1-2 ...CD C 23 Case Study 82-Z_iso 1D Start Motor P678,<LPSQ 1.00000 i--CJ Relay - - 24 Case Study 82-Z_oso 10 Start Motor PIC,(SW) 1.00000

          >--CJ        Breaker                                 7      Case Study B2-z_;so 10    Brand,T-         PS5A4N           P55A-Z          1         1.41800 l-o          Fuse                                    17     Case Study 82-Z_oso 10    Start Motor      P55A                                       1.41800 i*-*CJ       Stab< y., eor..,.n,ator(S\,C)           8      Case Study B2-Z_;so 1D    Brand,T-         P55BJN           P55S-Z          1         1.47600 l- (;] Uider Load Tap Oianger(ULTC)                         Case Study B2-Z_,oo1D 26                               Start Motor      P55B                                       1.47600 i'-*Cl       Molor ()pe,ated Valve(MOV) 12     Case Study B2-Z_iso 10    Brand,T-         PS68-IN          P568-Z          1         1.53800
          ,** CJ       F...<< Isolation Llil(FlU)

=~

r-CJ

==~=~~ABT) 19 11 18 Case Study 82-Z_,oo 10 Ca,e Study 82-Z_iso lO Case Study 82-Z_IOO 10 Start Motor Brand,T-Start Motor P568 P56A-IN P56A P56A-Z 1 1.53800 1.68100 1.68100

~ [s =::=..=FKi)

Transformer I-rush Sm.Jalion(TlS) 9 Case Study 82-Z_;so 10 Brand, T- MCC-1-X4N MCC-1-X-Z 1 1.68600 25 Case Study 82-Z_,so 10 Start Motor MCC-1-X 1.68600

           - ei General Model                                  10     Case Study B2-Z_ioo 10    Brand,T-         MCC-2-X4N        MCC-2-X-Z       1         3.89500 27     ea.. Study 02-2_... 10    Start Motor      MCC-2-X                                    3.89500
                                                                                                                                                                                               µ I  OK I       -

Cancel I

EA-ELEC-EDSA-03, Rev 2 Appendix Q LOCA Load Flow and ECCS Motor Start Analysis Page 6 of 8 Case Study 9; B2-Z_isoCD (transient stability scenario 5-A2/B2-TS-1D)-SUT 1-2 feed Special Scenario Bus lC& l D isolated on SUT 1-2; 10 ma x

l§J EOSA Tra~nt Data and Event Manager - 03 LOCA R2(Re....CC)

     ~            )<         [@J       I.:.

Add Delete Copy Pa ltt 8 -[) T...-tData No ,c.se ...... I Evert T,.,. I From !iJs Name ITo!iJsName I Qwl No . I Evert Tmelsecl I Evert fuationb

          *- DMaclwle                                           1    C... Study   82-Z_;oo CD   llranchT-            MCC-1-X4N        MCC-1-X-Z           1          000000 1:1-D Evert                                              2    C.se Study   82-Z_;so CD   Branch T -           MCC-2-X4N        MCC-2-X-Z           1          0.00000
        ! !- D Case 9iJdy A2-Z_                                 3    C.se Study   82-Z_,so CD                        PS5A-lN          P55A-Z              1          0.00000                            !

llranchT-f- D c... Study B2-Z_ 4 C.se 9iJdy 82-Z_iso CD li,nchT- P558-lN P558-Z 1 0.00000 i ' 0 C...!rufyB2.1-Z_ 5 C.sa Study 82-Z_iso CD PSGMN P56A-Z 1 000000 li,nchT-I Case Study M 1/B4 1_ 6 C.se Study 82-Z_iso CD li,nchT- P5684N P5611-Z 1 0 00000 I t-EJ C.se Study A2-Z-1C_ i rD c...Sludyen1c_ 13 C.se Study 82-Z_iso CD Start Mot..- P528-fX) 1.00000 i r-EJ Case Study 82.1-Z-lC_ 14 Case Study 82-Z_iso CD StartMotor PSX:.fX) 1.00000 e*-D c... 9iJdy 82-Z_;oolD 15 Ca,e Study 82-Z_iso CD Start Mot..- P54/,f:S) 1.00000 i r*C::J Case Study 82-Z_iso CD 16 C.se Study 82-Z_iso CD Start Mot..- P54B~S) 1 00000 r*t:::'l C.se Study 82.1-Z_iso_CD 20 C.se Study 82-Z_iso CD Start Mot..- PGGA-{HPSO 100000

                ~ CJ C.se Study 84.l _iso_CD                    21   C.se Study   82-Z_iso CD   Sl:art MotO(         P668-(HPSO                                       1 00000 H::J C.se Study 82-Z_ooCD_C                     22   C.oe Study   82-Z_ioo CD   Start Moto,          P67A-(LPSO                                      1.00000 i     L E:] Case Study 821-Z_isoCD_C                  23 C.se Study     82-Z_iso CD   Start Motor          P67B{LPS 0                                       1.00000 L          Relay                                       24 C.oe Study     82-Z_iso CD   Slart Moto,          PJC-(SW)                                        1.00000 e:i-...                                           7 C.se Study      82-Z_iso CD   li,nchT-             PS5A-lN           P55A-Z             1          200500
          DFtJse                                              17 Case Study     82-Z_iso CD   SIM Maor             P55A                                            2 00500
          ' Sll!lc V..-~o,(S\q                                  8 C.se Study      82-Z_iso CD   BranchT-             P55B4N            P558-Z             1          2 05300 D     lhle, load Tap Change,(ULTC) 26 Case Study     82-Z_ioo CD   Start Motor          P55B                                            2.05300 D     Mot°' Operated Valve(MOV) 11 C... Study     82-Z_iso CD   BranchT-             P56A4N            P56A-Z             1          2.47700
          '         FOIJI-LW{RLO 18 C.se Study     82-Z_iso CD   9.art Motor          P56A                                            2.47700 1£] Stat,c: A.comatic !iJs TramfeotSABT) 12 C.sa Study     82-Z_iso CD   li,nchT-             P561HN            P561l-Z            1          3 98200 CJ Stat,c: ~ConverteotSFCJ 19 C... Study     82-Z_iso CD   Sl:art Motor         P568                                            3 98200
          '   CJ T.....tonner I-rush Sm.lation(TlS)                                                                                    MCC-1-X-Z                     4 16500 CJ IJo,t,ly Fed ncl.Jcfion Generator{DFIG)        9 C.se Study      82-Z_iso CD   llranchT-            MCC-1-X4N                            1 D Photovolaoc & lnverte,il'V Model)               25 Case Study     82-Z_iso CD   Start Motor          MCC-1-X                                         4.16500
         ,    CJ General Model                                  10 Case Study     82-Z_iso CD   BranchT-             MCC-2-X-IN        MCC-2-X-Z          1          4.33100 27 Case Study     82-Z_;so CD   Start Mot..-         MCC-2-X                                         4.33100
                                                             *                                                                ..                                                                   I I  DK I               *-

Cancel I Case Study 10; B2 .l-Z_isoCD (transient stability scenario 5-A2/B2-TS-1D)-SUT 1-2 feed Special Scenario Bus lC&lD isolated on SUT 1-2; 1D max [§'J EDSA Trans.ielt Data and Event Manag~ - 03_LOCA_R2(Revc:Q

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        ,-o -                                                   1    C.se Study 82.1-Z_;so_CD      llranc:h T-          MCC-1-X-IN        MCC-1-X-Z          1           0.00000 ao Evert                                                 2    C.sa Sludy 82.1 -Z_iso_CD     Bta,chT-             MCC-2-X4N         MCC*2-X*Z          1           000000 i      !- D      Case Study A2-Z_                       3    C.se Study 82.1-Z_mo_CD       BranchT-             PS5A-lN           P55A-Z             1           0.00000
               ,D        c ... Study 02-2_

4 C.se Study 821 -Z_ioo_CD Bta,chT- P5584N P55B-Z 1 0.00000 I !- D Case Study 82.1-Z_ 5 C.se Study 82.1-Z_,so_CD Brand\T- P56A4N P56A-Z 1 0.00000

               ;0        C-S1udyM.1/B4.1_

6 C... Sludy 821 -Z_ioo_CD BranchT- P561HN P5611-Z 1 0.00000 I D C...S1udyA2-Z-1C_ Start Moto, P528-fX} 13 C.se Study 82.1-Z_mo_CD 1 00000 i ,-{:) Case Study B2-Z-1C_ 14 C.se Study 82.1-Z_ioo_CD Start Moto, P52C.p:) 1 00000

               ;--0 Case Study 821-Z-lC_

I ea.. Sludy 82-Z_ioo 1D 15 C.se Study 821-Z_mo_CD Slart Moto, PSSMHPSI) 1.00000

-CJ Case Study 82-Z_mo CD 16 C.se Study 82.1-Z_mo_CD Siad Moto, P668-(HPSO 1.00000

        '      ;- EJ C... Study B2.1*Z_m_CD                     17   C.se Sludy 82 1-Z_mo_CD       Start Moto,         P67A-(LPSI)                                       1.00000 t -el Case Study 84.l _iso_CD                    18   C.se Study 82.1-Z_ioo_CD      Siad Moto,          P678-(lPS1)                                       1.00000 i      i***l:J Case Study 82-Z_isoCD_C                  19   C.se Sludy 821 -Z_iso_CD      Siad Moto,          PlC-(SW)                                          1.00000
        .      '***CJ Case Study B21-Z_isoCD_C                  7    C.se Study 82.1-Z_mo_CD       Branch T,w;,g       P55A-IN            P55A-Z             1           1.60000 1--EJ       Relay                                       20   Cose Sludy 82.1-Z_is<S_CD     Start Moto,         P55A                                              1.60000 i-CJ        Breaker                                     8    C.se Sludy82.1-Z_ioo_CD       BranchT..,.,..,     P558-IN            P558-Z             1           1.73300
        !.. CJ      Fuse                                        21   C.se Study 821 -Z_mo_CD       Start Moto,         P55B                                              1.73300 I
            -      Sll!lc Vor ~satcxiS\q                        9    C.se Sludy 82.1-Z_iso_CD      llranc:hT-          P56A-IN            P56A-Z             1           1.82700 r-D         lhle, load T"" O>ar,ge,(ULTC) 22   C.sa Sludy 821-Z_mo_CD        St.wt Motor         P56A                                              1.82700
            -D      Mot..- Operated Valve(MOV)                  10   C.se Study 82.1-Z_ioo_CD      Bta,chT-            P568aN             P568-Z             1           3.32300 i--EJ Fu -                  Llni{RLO                    23   Case Sludy 821 -Z_ioo_CD      Start Mot..-        P568                                              3.32300 rD          Slate /lt.to,nal;c !iJs TramfeotSABTJ 11   C.se Study B2.1-Z_ts0_CD      BranchT..,.,..,     MCC-1-X4N          MCC-1-X-Z          1           3.53800
          --CJ      Slate ~Conve,ter(SFC) 24   C... Sludy 82.1-Z_ioo_CD      Siad Moto,          MCC-1-X                                           3 53800
          -        T.....totme< nush SlnuaOon(TlS}
        !    -CJ    IJo,t,ly Fed ncl.Jcfion Generator{DFIG)     12   C.se Study 821 -Z_mo_CD       Branc:hT-           MCC-2-X4N          MCC-2-X-Z          1           3.65300 L-CJ       Photovoloic & lnverteot?V Model)             25   Case Study 82.1-Z_ioo_CD      St.st Motor         MCC-2-X                                           365300
          -0       General Model                                26   C.se Study 82.1-Z_mo_CD       Start Motor         P54A-P)                                           3.76200 27   Case Sludy 821 -Z_ioo_CD      St;,t Motor         P548-f3)                                          3.76200 I  OK I                           Cancel I

EA-ELEC-EDSA-03, Rev 2 AppendixQ LOCA Loa.d Flow and ECCS Motor Start Analysis Page 7 of 8 Case Study 11; B4.l_iso_CD (transient stability scenario 6-A4/B4-10)-SUT 1-2 feed Special Scenario Bus lC&lD isolated on SUT 1-2; 10 max. [§] EDSA Transient Data and Event Manager - 03_LOCA_R2~C)

    ~                X         ~         IA Add           Delete       Copy      Parte 8  **lcJ     Tranoeri Data                             No. Ca,e                      Evert r                        To lb, Name     Orcui No.

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                  ~ E:J C- Study 82-2_i>o CD l** (1:) Case Study 82.1-2_iso_CD
                  !* ILI Case Study 84.1 i>o CD i- e'.l  C- Study 82-ZJsoCD_C
           ! ,-'.: ~.Case Study 82.1-ZJ'50CD_C Case Study 12; B2-Z_isoCD_C (transient stability scenario 9-A2/B2-TS-1C)-SUT 1-2 feed Special Scenario Bus lC&lD isolated on SUT 1-2; lC max.

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        ; i- D            Case Study B2*2=                4   Case Study B2-Z_isoCD_C    Branch T -     P55C-IN        P55C-2                       0.00000 I      [. C::J    c- Study 021-2                  5   Case Study B2-Z_isoCD_C    Branch T -     PSGMN          PS6A-2                       0.00000

[- CJ C... Study M .1/84 1_ 6 Case Study B2-Z_isoCD_C Branch Tnoor,g P5G8-IN PS6B-2 0.00000

               ;.. E::J Case Study A2*2-1C f* @'] Case Study B2*Z* £                  13 14 Case Study B2-ZJsoCD_C Case Study B2*Z_isoCD_C Start Motor St..t Motor P52A,P:)

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               ~*-1!!:J Case Study B2.1*2*1C i-* IEI c..e Study 02-2 iso 10             15  Case Study B2-2_~oCD_C     St..t Motor    P54A-;CS)                                   1.00000
               !. (1:J Case Study B2-i_iso CD             16  Case Study B2-Z_isoCD_C    St..t Motor    P54B-{CS)                                   1.00000
               ~***1:::J C... Study 82.1-Z_i,o_CD         18  Case Study B2-2_isoCD_C    Start Motor    P67A-(LPSI)                                 1.00000 f***e:J    Case Study B4 1_iso_CD          20  Case Study 02-ZJsoCD_C     St..t Motor    P67B-(LPSij                                 1.00000
               ;. . eJ Case Study 82-2_isoCD_C            21  Case Study B2-2_isoCD_C    St..t Motor    P78-(SW)                                    1.00000
        , L..e:J C... Study B21*2_isoCD_C                 26  Case Study B2-Z_isoCD_C    Start Motor    P66A-(HPSO                                  1.00000

[CD::.. 27 8 C... Study B2-2_ISOC1l_C Case Study B2*Z_isoCD_C St..t Motor lhr>::h T - P66ll-(HPSI) P55C-IN P55C-2 1.00000 1.56000

        } Cl         Fuse                                 19  Case Study B2*2_isoCD_C    St..t Motor    P55C                                        1.56000 T-j -Cl        Static v... a.r,,.nsato,(51.c)       7   Case Study 02-Z_isoCD_C    Branch T-g     P55A<N         P55A*Z                       1.59500 i EJ         l.lider load Tap Olanger\\JLTC)      17  Case Study B2-Z_isoCD_C    St..t Motor    P55A                                        1.59500

l. . [:J Motor Operated Valve(MOV) 11 Case Study B2*Z_isoCD_C Branch PS6A!N PS6A*Z 2.28000

        !-*lu Faul 1$Clation U,,(Flll)                    22  Case Study B2*ZJsoCD_C     Start Motor    PS6A                                        2.28000
        !** ILi Stalic Afomalic Ek.is Transfe<{SABT)
        /.....       Static Frequency Convertef(SFC)
        ~*EJ Transfcxmer nush Sm.iation(TIS) 1 l::c) !Jo<.t,ly Fed 1nd.Jdion Generate<(DFIG) f-el Pho<ovolai<: & lnverte,(PV Model) l .. e:J     G.,,...i Model 12 23 9

24 10 Case Study B2*Z_~oCD_C Case Study B2-Z_isoCD_C Case Study B2*Z_isoCD_C C- Study B2-Z_isoCD_C Case Study B2-Z_~oCD_C Branch T-T-Branch T-g 51..t Motor St..t Motor Branch P568-lN P5G8 MCC-1-X-IN MCC-1-X MCC*2*X-IN PS68-Z MCC-1-X-2 MCC-2-X*Z 3.98400 3.98400 4.16800 4.16800 4.30000 25 Case Study B2*Z_isoCD_C St..t Motor MCC-2-X 4.30000 OK I

EA-ELEC-EDSA-03, Rev 2 Appendix Q LOCA Load Flow and ECCS Motor Start Analysis Page 8 of 8 Case Study 13; B2 .l-Z_isoCD_C (transient stability scenario 9-A2/B2-TS-1C)-SUT 1-2 feed Special Scenario Bus 1C&1D isolated on SUT 1-2; lC ma x.

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Add Delete Copy Paste G* Transiert Daa No. Case Event f From Bus Name To b Name Q,::tJi No . EverlTme ec Event [Ano t* CJ Maclr.e 1 Case Study 82. 1-Z_isoCO_C llnrochT- MCC-1-X4N MCC*l-X-Z 0.00000 i(l E:J Event 2 Case Study 821-Z_;...CO_C llnrochT- MCC-2-X4N MCC*2-X-Z 0.00000

           ,--CJ Case Stt.dy A2-Z                      3  Case Study 82.1-Z_isoCO_C  llnrochT-        P55A-IN       P5SA-Z                      000000
           '--:J Case Stt.dy 82-Z=                       Case Study 821-Z_isoCD_C   llnrochT-        PS5C4N        P5SC-Z                      0.00000
           ;-0      Case Stt.dy B21 -Z_

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             *-*Cl  Case Stt.dy 82-Z_;oo CD            16 Case Study 821-Z_isoCD_C   Stal Moto,       P67B-(LPSI)                               1.00000
           !*-0     Case Stt.dy 82.1-2 ;so CD          17 Case Study B2.1*Z_~oCD_C   Start Mota'      P7B~SW)                                   1.00000
            !-CJ    Case Stt.dy 84.1_;;,_C-D           18 Case Study BZ 1-Z_isoCD_C  St.lit Mei.or    PGGA{HPSQ                                 1.00000 i-e::t  Case Stt.dy B2-Z_;soCD_C           19 Case Study 82.l *Z_isoCO_C Start Motor      P661J.{HPSQ                               1.00000
            *--3   Case Stt.dy 02.1-z_;soc:o_c        20 Case Study B21-Z_isoCD_C   Start.Mex.or     PS5C                                      1.00000 f . A.lay                                          21 Case Study 82.1-Z_isoCD_C  StalMotO<        P55A                                      1.00000 f 1!J Breaker                                      7  Case Study 821-Z_isoCD_C   llnrochT-        P56A4N        P,GA.Z                      1.7G100 t* Cl Fuse                                         22 Case Study 821-Z_isoCO_C   Start Motor      P56A                                      1 7G100
    ! E:J Static Var Compemao,{S\q                     8  Case Study 821-Z_isoCD_C   llronchT-        P56B-IN       P568-Z                      3.29600
    ! CJ lhler Load Tap Olange,j\JLTq                  23 Case Study 82.l *Z_isoCO_C Start Mota       PS6B                                      3.29600 f* CJ Motor Operated Valve(MOV)                    9  Case Study B21-Z_isoCD_C   llronchlrippi:>g MCC-1 -X-IN   MCC-1-X-Z                   3.51600

. el Fd lsolaoon lkll(FIU) 24 Case Study 82.1-Z_isoCO_C Start Motor MCC-1-X 3.51600 j.... Static IV:omatic a., Tran,ier{SABT)

    !   *l::J Staie FreQuency Converter{SFC)           10 25 Case Study 821-Z_isoCD_C Case Study 82. l*Z_isoCD_C llronchTrippi:>g Start Motor MCC-2-X4N MCC-2-X MCC*2-X*Z                   3.62200 3.62200 Tran,!onner Inrush SmuaUon(TIS)
    )* I!:) Dc,,.Jblv Fed lnductoo Generato<1DFIG)     13 Case Study B21*Z_isoCD_C   Start Motor      P54A{:S)                                  3.71800
    !* * !::I Photovoltaic & nverter{PV Model)         14 Case Stt.dy 82.1-Z_isoCO_c StartMol:or      PS48{:S)                                  3 71800
    '. 1w General Model Ill DK                           Cancel

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SU 1-2 AppendixR Voltage(PU) r3.305. o.9331 _ _ _ __ 0 .9500 - Bus-1C 5' c.. wCl IV

 ~ 0.9000 0.000        2. 000       4.000            6.000       8. 000 Time in Seconds Voltage(PU)
                                              ~,4-.5 .-0-.9                                                                           -   Bus-10
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 .f;  0.850 0.000        2.000         4.000            6.000       8.000 Time in Seconds Voltage(PU) 0.9500                                                                -  LC-1 1 5'

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Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SU 1-2 AppendixR Voltage(PU) 0.900 - LC-12 S-c.. Q) Cl

 ~   0.800 0

0.700 0 .000 2.000 4.000 6.000 8.000 Time in Seconds Voltage(PU) 0.950 S-c.. Q) ci 0.900 2! 0 0.850 0.000 2.000 4.000 6.000 8.000 Time in Seconds Voltage(PU) 0.950

                                                                  -   MCC-2 5'  0.900 a..

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Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SU 1-2 Appendix R Voltage(PU) 0.9500 - MCC-21 D.. ai Cl C1I

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Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 10 via SU 1-2 AppendixR Voltage(PU) 0.900 - MCC-24 5' D. Q) Cl

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Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SU 1-2 Appendix R Voltage(PU) and Current(PU) 6.00

                                                                                                             -   P7Cr{SW) 0.800                                                                                                   Ill P7Cr{SW) 5.00 0.600                                                                                  4.00 5'                                                                                                5' Q.

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                                                                                                            -    P52B-(CC) 0.800                                                                                                  Ill  P52B-(CC) 5.00 0.600                                                                                  4.00
 =>

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Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SU 1-2 Appendix R Voltage(PU) and Current(PU)

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                                                                                                                     -   P54A-(CS)

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Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SU 1-2 AppendixR Voltage(PU) and Current(PU) 7.00 - P54B-(CS) 0.800 Ill P54B-(CS) 6.00

                                          \
                                            \
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                                                                                                                -   P55A 0.800 4.00             Ill P55A 0.600 3.00 5"                                                                                                       5" C.                                                                                                       C.

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Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SU 1-2 Appendix R Voltage(PU) and Current(PU) 6.00

                                                                                                                -   P55B 0.800 111 P55B 5.00 0.600                                                                                     4.00 5'                                                                                                   5' D..                                                                                                  D..

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Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SU 1-2 AppendixR Voltage(PU) and Current(PU) 6.00

...r.:: -~ ----'

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0.000 0.00 I I I I I 0.000 2.000 4.000 6.000 8.000 Time in Seconds Voltage(PU) and Current(PU) 5.00

                                                                                                     -         P66A-(HPS1) 0.800                                                                                         Ill       P66A-(HPS1) 4.00
 -     0.600 ll.                                                                                    3.00 s-ll.

Ql 3.741 , 0.96 C: Cl Q) CV

 ~ 0.400                                                                                        t::

I

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0.200 1.00 0.000 0.00 0.000 2.000 4.000 6.000 8.000 Time in Seconds L:\Electrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422}\Electronic files\App R Plots-B2-Z-iso lD.docx Page 9 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SU 1-2 AppendixR Voltage(PU) and Current(PU) 5.00 - P66B-(HPS1) 0.800 m P66B-(HPS1)

"\

1

                                            \                                            4.00
 - 0.600 a..

QI 3.00 ~ C) 3.406 , 0.82 ] C: 111

 ~ 0.400
                                                                                                ~

s

 >                                                                                       2.00  u 0.200 1.00 0.000                                                                              0.00 I                 I                   I            1                   l 0.000             2.000              4 .000         6.000             8.000 Time in Seconds Voltage(PU) and Current(PU) 5.00         -  P67A-(LPS1) 0.800                                                                                           m  P67A-(LPS1) 4 .00

_ 0.600 a.. s-a.. 3.00 QI C:

C) 111 0.400 1.821 , 1.03 I!!

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Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SU 1-2 Appendix R Voltage(PU) and Current(PU)

                                                                                                          -     P67B-(LPSI) 0.800                  \                                                               5.00         111   P67B-(LPSI)

I

I 4.00

  - 0.600

> 5'

a. a.

wCl 1.7 18, 1.05 3.00 f

   "'                                                                                               ~
  ~ 0.400                                                                                           :,
  >                                                                                          2.00

(.) 0.200 1.00 0.000 0.00 0.000 2.000 4.000 6.000 8.000 Time in Seconds Voltage(PU) and Current(PU)

                                                                                                              -    MCC-1 -X 0.800                                                                                     5.00          111  MCC-1-X I
                                          *.~ l __._.'\
                                  ,,_~~----l"}J~                                                4.00
  - 0.600                                    I          '

> 5'

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  ~"' 0.400                                                  \-                                         ~:,
                                                              \
  >                                                                                                    (.)

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Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SU 1-2 Appendix R Voltage(PU) and Current(PU) r~*

                                                                                                        -   MCC-2-X 0.800                                                                                             111 MCC-2-X 4.00
                                                    \\
                                                            !4.741 , 2.43 )

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g 0.400 ...

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 >                                                                                          2.00  8 0.200                                                                                 1.00 0000                                                                                  000 0.000            2.000             4.000                  6.000           8.000 Time in Seconds All-EX02-SUB1-2 (SG 1-1 To Bus le) - Current - Peak- 0.0873 L:\Electrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic files\App R Plots-82-Z-isolD.docx Page 12 of14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SU 1-2 AppendixR [USS0.113 ,, All-EX02-SUB1-2 (SG 1-1 To Bus lC) - Current -Steady State - 0.0311 pu A12-X04-SUB1-2 (SU 1-2 To Bus 10) - Current - Peak- 0.1114 pu L:\Electrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic file s\App R Plots-B2-Z-isolD.docx Page 13 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SU 1-2 AppendixR A12-X04-SUB1-2 (SU 1-2 To Bus 10) - Current - Steady State -0.0396 pu L:\El ectrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic fil es\App R Pl ots-B2 -Z-isolD.docx Page 14 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SU 1-2 iso CD AppendixS Voltage(PU) _....,__ _ _ _ _ - Bus-1C 50.9000 D. Q) Cl Is 008, o.9328 I 0

 >     0.8000 0.000      2.000         4.000           6.000        8.000 Time in Seconds Voltage(PU)
                                            -~1------ -                    Bus-10 50.9000 D.

Q) Cl 1 s.356, 0.9328 I 0

 >     0.8000 0.000      2.000         4.000           6.000        8.000 Time in Seconds Voltage(PU)
                                            .-------- -                     LC-11 1.206, 0.7431 50 9000 D.

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 >     0.8000 0.000       2.000         4.000           6.000        8.000 Time in Seconds L:\Electrical Analysis\EA-ELEC-EDSA-03 R2 LO CA w-offsite pwr (EC42422)\Electronic files\App S Plots-B2-Z-isoCD.docx Page 1 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SU 1-2 iso CD AppendixS Voltage(PU) 0.9000 5' a.

  !08000
  !9 0

0.7000 0000 2.000 4.000 6.000 8.000 Time in Seconds Voltage(PU)

                                                       - - - - - MCC-1
  -0.9000 11.178, 0.7179 i a.

QI Cl

  !9 g0.8000 0.000       2.000        4 .000    6 .000       8.000 Time in Seconds Voltage(PU)
                                               ------- -                 MCC-2 50 9000                11.173, 0.7185 a.

QI Cl

  !9 g0.8000 0.000       2.000        4.000     6.000        8.000 Time in Seconds L: \Electrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electro nic files\App S Plots-B2-Z-isoCD.docx Page 2 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SU 1-2 iso CD AppendixS Voltage(PU)

                                           ------- -                MCC-21
                        /1.200, 0.7425 50 9000 a.

QI Cl

.f!

0

 >   0.8000 0.000         2.000        4.000    6.000        8.000 Time in Seconds Voltage(PU) 0.9000 a.
 -go.8000
 ~

0 0.7000 0.000 2.000 4.000 6.000 8.000 Time in Seconds Voltage(PU) 50.9000 a. QI Cl

0

 >   0.8000 0.000         2.000       4.000     6.000        8. 000 Time in Seconds L:\Electrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic files\App S Plots-B2-Z-isoCD.docx Page 3 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SU 1-2 iso CD AppendixS Voltage(PU) 0.9000 D..

 -go8ooo
 ~

0 0.7000 0.000 2.000 4 .000 6.000 8.000 Time in Seconds Voltage(PU)

                                                    ---- -          MCC-25 1.177, 0.7270 50.9000 D..

ai' Cl

 ~
 ~ 0.8000 0.000       2.000        4.000    6.000        8.000 Time in Seconds Voltage(PU)
                                              ------ -              MCC-26

[1173, 0.7259 50 9000 D.. ai' Cl

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Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 10 via SU 1-2 iso CD AppendixS Voltage(PU) and Current(PU) 5.00 - P7C-(SW) 0.800 Ill P7C-(SW) 4.00

 -    0.600

, 5' fl. fl.

3.00 ai Cl 2.435, 1.24 c

  <II
 ~ 0.400                                                                                                 ~

i

 >                                                                                               2.00

() 0.200 1.00 0.000 0.00 0.000 2.000 4.000 6.000 8.000 Time in Seconds Voltage(PU) and Current(PU)

                                                                                                              -    P52B-(CC) 0.800                                                                                     5.00          111  P52B-(CC) 4.00 0.600 fl.                                                                                                   fl.

ai Cl [1.741 , 1.23 j 3.oo c

I

i

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                               \                                                                2.00
                                \

0.200 1.00 0.000 0.00 0.000 2.000 4.000 6.000 8.000 Time in Seconds L:\Elect rical Analysis\EA- ELEC-ED SA-0 3 R2 LOCA w-offsite pwr (EC42422)\ Electronic fil es\App S Plots- 8 2-Z-isoCD.d ocx Page 5 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SU 1-2 iso CD Appendix S Voltage(PU) and Current(PU)

                                                                                                      -    P52G-(CC) 5.00 0.800                                                                                            111  P52G-(CC) 4.00 0.600 5"                                                                                              5"

a. a.

C) 11.736, 1.21 I 3.00 i:

 <11
 ~ 0.400
                                                                                                  ~

I

 >                                                                                               u 2.00 0.200 1.00 0.000                                                                                0.00 0.000             2.000             4 .000               6.000           8.000 Time in Seconds Voltage(PU) and Current(PU) 6.00        -    P54A-(CS) 0.800                                                                                            111  P54A-(CS) 5.00 0.600 5"                                                                                       4.00   5"

a. a.

 ~                                                                                               ....

C)

 <11
 ~ 0.400 4.409, 1-::i11 3.00 u

C

I 2.00 0.200

                                                       /, __                              1.00 0.000                                                                                0.00 0.000             2.000             4.000                6.000           8.000 Time in Seconds L:\Electrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic files\App S Plots-B2-Z-isoCD.docx Page 6 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SU 1-2 iso CD AppendixS Voltage(PU) and Current(PU) 6.00 - P54B-(CS) 0.800 111 P54B-(CS) 5.00 0.600

> 4 .00 :::>

a.. QI C) 111

 ~ 0.400 3.00 a..

C

                                                                                                      ~
 >                                                                                                   (.)

2.00 0.200 1.00 0000 0.00 0 .000 2.000 4.000 6.000 8. 000 Time in Seconds Voltage(PU) and Current(PU)

                                                                                                                 -   P55A 0.800 4.00          111 PSSA 0.600

3. 00 a.. a..

QI 'E C) 2.928, 0.60

 ~ 0.400                                                                                           2.00
                                                                                                             ~

i 0

 >                                                                                                         (.)

0.200 1.00 0.000 0.00 0.000 2. 000 4.000 6 .000 8.000 Time in Seconds Timeacce1 =2 .928- 2.005 =0 .923 seconds L:\Electrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electro ni c files\App S Plots-B2 -Z-isoCD.docx Page 7 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SU 1-2 iso CD AppendixS Voltage(PU) and Current(PU) 6 .00

                                                                                                                 -   P55B 0.800                                                                                                     Ill P55B 5.00 0.600                                                                                      4.00 S-a.

s-a. QI Cl 12 812 , 0.51 : 3.00 cI!!

 ~ 0.400                                                                                                  ...::,

g u 2.00 0.200 1.00

0.000 000 0 .000 2.000 4.000 6.000 8.000 Time in Seconds Timeaccei =2.812- 2.053 =0 .759 seconds Voltage(PU) and Current(PU) 5.00 - P56A 0.800 Ill P56A 4.00 0.600 a. s-a. 3.00 QI Cl 5.117, 0.65 c I'll

 'g    0.400                                                                                              ...

I!!

 >                                                                                                2.00   u 0.200 1.00 0.000                                                                                      0.00 0 .000            2.000                  4.000            6.000                8.000 Time in Seconds Timeacce1     =5.117 -   2.477  =2.640 seconds L:\Electrical Analysis\EA- ELEC-ED SA-0 3 R2 LOCA w-offsite pwr (EC42422)\Electronic files\App S Plots-82-Z-isoCD.docx Page 8 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SU 1-2 iso CD AppendixS Voltage(PU) and Current(PU) 6.00 0.800

                                                                       \    \
                                                                            \

5.00 111 P56B P56B

0.600 4.00 5' 5' a. wCl nJ

 ';3 0.400 16.345, 0.66   I      3.00  -...

a. C

s

 >                                                                                                          (.)

2.00 0.200 1.00 f'--*- - 0000 0.00 0.000 2.000 4.000 6.000 8.000 Time in Seconds Tim eacce1 =6.345 - 3.982 =2.363 seconds Voltage(PU) and Current(PU)

                                                                                                          -     P66A-(HPSI) 0.800                                                                                                m     P66A-(HPSI) 4.00 0.600

, 3.00 ::,

a. wCl nJ

 ';3 0.400 4.108, 0.99 '                                   -

a. C

2.00 :s

 >                                                                                                   (.)

0.200 1.00 0.000 0.00 0.000 2.000 4.000 6.000 8.000 Time in Seconds L:\El ectrical Analysis\EA- ELEC-EDSA-0 3 R2 LOCA w-offsite pwr (EC42422)\Electronic files\App S Plots-B2 -Z-isoCD.docx Page 9 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SU 1-2 iso CD AppendixS Voltage(PU) and Current(PU)

                                                                                                     -    P66B-(HPSI) 0.800
                                             \   \

4.00 111 P66B-(HPSI) _ 0.600

, 3. 00 5 c.. c..

a, C) 3.990, 0.88 i: nl

 ~ 0.400                                                                                        ~

2.00 ::J

 >                                                                                             u 0.200                                                                              1.00 0.000                                                                              0.00 0.000            2.000               4.000            6.000          8. 000 Time in Seconds Voltage(PU) and Current(PU) 5.00
                                                                                                      -   P67A-(LPS1) 0.800                                                                                           111 P67A-(LPS1) 4.00 0.600 c..

3. 00 5 c..

a, C) [1.990, 1.1 1 1 i: nl

 ~ 0.400                                                                                         ~

J

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Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SU 1-2 iso CD AppendixS Voltage(PU) and Current(PU) 5.00

                                                                                                                           -     P67B-(LPSI) 0.800                                                                                                                111   P67B-(LPSI) 4.00 0.600 3.00  ~

a.. wCl nJ

  ';3 0.400 12.004, 1.21 i                                                               -...

C

I

  >                                                                                                       2.00  (.)

0.200 1.00 0.000 0.00 0 .000 2.000 4.000 6.000 8.000 Time in Seconds Voltage(PU) and Current(PU) 0.800 I I I 6.00

                                                                                                                               -   MCC-1 -X MCC-1-X
                                                                        ,I '                                 5.00 I'

1 I I' I 0.600 ,.....J n I. 1 1 5 .-1~"'. 4.00 I 11 5 a.. w In!

                                                                             -,,1 a..

Cl I J ! '-~ 6.423, 2.42 I i: nJ

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I

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Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SU 1-2 iso CD Appendix S Voltage(PU) and Current(PU)

                                                                                                                      -   MCC-2-X 0.800                                                 .... ,,                                                   111 MCC-2-X
                                                                   *\,                                    - 4.00
                                                                      \
                                                                        \

0.600 \ [5.411 , 2.42 ]

, - 3.00 5" c..

QI C) (1J

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                                                                             \
                                                                              \.r-- - - - - - -                  -...

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                                                                                                                  ~
                                                                                                          - 2.00  ::J
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0.200 - 1.00 0.000 ;::::::=::::::;;:::::=::::::::==::::::==::::~-~___'._-~--~-~ - 0.00 I I I I I 0.000 2.000 4.000 6.000 8.000 Time in Seconds

*~

n.. ..........,. All-X04-SUB1-2 (SU 1-2 To Bus lC} - Current - Peak - 0.0777 L:\Electrical Analysis\EA-ELEC-EDSA-03 RZ LOCA w-offsite pwr (EC42422)\Electronic files\App S Plots-B2-Z-isoCD.docx Page 12 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SU 1-2 iso CD Appendix S All-X04-SUB1-2 (SU 1-2 To Bus 1() - Current - Steady State - 0.0315 pu A12-X04-SUB1-2 (SU 1-2 To Bus 10)- Current - Peak- 0.1035 pu L:\Electrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic files\App S Plots-B2-Z-isoCD.docx Page 13 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SU 1-2 iso CD Appendix S A12-X04-SUB1-2 (SU 1-2 To Bus lD) - Current -Steady State - 0.0393 pu L:\Electrical Analysis\EA-ELEC-EDSA-03 RZ LOCA w-offsite pwr (EC42422)\Electronic files\App S Plots-B2 -Z-isoCD.docx Page 14 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SU 1-2 iso CD Appendix T Voltage(PU) 0.9500

                                                                      -   Bus-1C
 ~ 0.90 00 Q)

Cl

 ,gi 0.8500 0

0.8000 0.000 2.000 4.000 6.000 8.000 Time in Seconds Voltage( PU) 0.9500

                                                                      -   Bus-1C
 ~   0.9000 Q)

Cl

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0.8000 0.000 2.000 4.000 6.000 8.000 Time in Seconds Voltage( PU) 0.9500

                                                                      -   Bus-1C
 ~ 0.9000 Q)

Cl [3.929, 0.8876

 ,gi 0.8500 0

0.8000 0.000 2.000 4.000 6.000 8.000 Time in Seconds L:\Electrical Analysis\EA-ELEC-EDSA-03 RZ LOCA w-offsite pwr (EC42422)\Electronic fil es\App T Plot-B2. 1-Z-isoCD.docx Page 1 of 5

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SU 1-2 iso CD Appendix T Voltage(PU) 0.9500

                                                                    -  Bus-1C
  ~ 0.9000 Q)

Cl 6.669 , 0.9328

  ~ 0.8500 0

0.8000 0.000 2.000 4.000 6.000 8.000 Time in Seconds Voltage(PU) 0.9500 1.167, 0.7730

                                                                    -  Bus-10
  ~0.9000 Q)

Cl

  ~ 0.8500 0

0.8000 0.000 2.000 4.000 6.000 8.000 Time in Seconds Voltage(PU) 0.9500

                                                                    - Bus-10
  ~0.9000 Q)

Cl 3.761 , 0.9313 )

  ~ 0.8500 0

0.8000 0.000 2.000 4.000 6.000 8.000 Time in Seconds L: \Electrical Analysis\EA-E LEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic fi les\App T Plot-B2. l -Z-isoCD.docx Page 2 of 5

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 10 via SU 1-2 iso CD Appendix T Voltage(PU) 0.9500

                                                                   -   Bus-10
  ~0.9000 Q)

Cl 3.927 , 0.8860

  ~ 0.8500 0

0.8000 0.000 2.000 4.000 6.000 8.000 Time in Seconds Voltage(PU) 0.9500

                                                                   -   Bus-10 5'0.9000 a.

Q) Cl 6.817, 0.9328

 ~ 0.8500 0

0.8000 0.000 2.000 4.000 6.000 8.000 Time in Seconds Voltage(PU) and Current(PU) 7.00 - P54A-(CS) 0.8000 Ill P54A-(CS) 6.00

 -0.6000                                                                                     5.00

> 5' a.

Q) Cl 3.916, 0.8826 4.00 a. C: (ll

 'E 0.4000                                                                                           ...
 >                                                                                           3.00   u 2.00 0.2000 1.00 0.0000                                                                                 0.00 0.000             2.000             4.000            6.000                8.000 Time in Seconds L:\Electrical Analysis\EA-ELEC-EDSA-03 R2 LO CA w-offsite pwr (EC42422) \El ectronic files\App T Plot-82.1-Z-isoCD.docx Page 3 Of 5

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SU 1-2 iso CD AppendixT Slip(PU) and Speed(PU) 1.00 1.00

                                                                                                          -   P54A-(CS)

Ill P54A-(CS) 0.80 0.80

I 0.60 0.60 :::, 50.. 0.. 6.452, 0.98 ~

g: J Cl)

Cl) iii C. 0.40 0.40 en 0.20 0.20 0.00 0.00 0000 2.000 4.000 6.000 8.000 Time in Seconds Voltage(PU) and Current(PU) 7.00 - P54B-(CS)

                                                   "-                                       1-0.8000                                                                                             Ill P54B-(CS)
                                                                                            -6 .00
 -0.6000                                                                                    ,_ 5.00 0..

50.. w 3.92 1, 0.8856 -4.00 C: Cl

(II

 ~ 0.4000                                                                                             :,
 >                                                                                          - 3.00  u
                                                                                            -2 .00 0.2000
                                                                                            - 1.00 0.0000                                                                                  0.00 I                I                I                    I                 I 0.000            2.000            4.000                6.000            8.000 Time in Seconds L:\Electrica l Analysis\EA-ELEC-EDSA- 03 R2 LOCA w-offsite pwr (EC42422)\Electronic files\App T Plot-82.1-Z-isoCD.docx Page 4 of 5

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SU 1-2 iso CD AppendixT Slip(PU) and Speed(PU) 1.00 -- 1.00

                                                                                                       -    P54B-(CS) 111  P54B-(CS) 0.80                                                                                 0.80 0.60                                                                                 0.60   :::i 5'                                                                                               a..

a..

e: 6.349 , 0.98 "C Q)

Q) en 0.40 0.40 i 0.20 0.20 0.00 0.00 0.000 2.000 4.000 6 .000 8.000 Tim e in Seco nds L:\Electrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electroni c files\App T Plot-B2.l-Z-isoCD.docx Page 5 of 5

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SU 1-2 iso CD Appendix U Voltage(PU)

                                                                  -  Bus-1C
 -0.9300 c..

QI [1.197, 0.9113 Cl C'CI

g 0.9200 0.000 1.000 2.000 3.000 4.000 5.000 Time in Seconds Voltage(PU)

                                                                  -  Bus-1C
 -0.9300 c..

QI Cl C'CI

g 0.9200 0.000 1.000 2.000 3.000 4.000 5.000 Time in Seconds Voltage(PU)

                                                                  -  Bus-1D 0.9300 c..

QI Cl 11 203, 0.9119 C'CI

g 0.9200 0.000 1.000 2.000 3.000 4.000 5.000 Time in Seconds L:\Electrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic files\App U Plot-B4.1-isoCD.docx Page 1 of 2

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1D via SU 1-2 iso*CD Appendix U Voltage(PU)

                                                                               -  Bus-1D 0 .9300 c..

Ql C>

g"' 0 .9200 0.000 1.000 2 .000 3.000 4 .000 5 .000 Time in Seconds Voltage(PU) and Current(PU) 8.00

                                                                                                          -    P54C-(CS) 0.800                                                                                               I ll P54C-{CS)
                                          ------ --~                                           6.00
 - 0.600

, 5' a..

e:. a, ,1.132, 0.910 4.00 'E

 ~ 0.400
                                                                                                     ~
 >                                                                                                  u 2.00 0.200 l

V\..,,.-- - 0.000 0.00 0.000 1.000 2.000 3.000 4.000 5.000 Time in Seconds Slip(PU) and Speed(PU) 1.00 -- - 1.00

                                                                                                          -    P54C-{CS)

Ill P54C-{CS) 0.80 0.80

0.60 I 0.60 5' 5' a.. a..

=c-

e: 3.420, 0.98 a, a,

in C. 0.40 0.40 (/) 0.20 0.20 I I I I 0.00 0.00 0.000 1.000 2.000 3.000 4.000 5.000 Time in Seconds L:\Electrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic files\App U Plot-64.1-isoCD.docx Page 2 of 2

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1C via SU 1-2 iso CD AppendixV Voltage(PU)

                                           ---+----- -               Bus-1C s-09000 C.

a, 15.920, 0.9328 !

  ...0en Ill
  >      0.8000 0.000     2.000        4.000       6.000      8.000 Time in Seconds Voltage(PU) s-o 9000 C.

a, en

0

 >       0.8000 0.000    2.000         4.000       6.000      8.000 Time in Seconds Voltage(PU) 1.176, 0.6996
                                            - - - - - - - - - LC-11 0.9000 C.

a, en

 ~ 0.8000
 ~

0.7000 0.000 2.000 4.000 6.000 8.000 Time in'Seconds L:\Electrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic files\App V Plots-B2-Z-isoCD_lC.docx Page 1 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1C via SU 1-2 iso CD Appendix V Voltage(PU) 1.207, 0.6822 ] 0.9000 - - - - - - - - - LC-1 2 5' a. Q) Cl

  !! 0.8000 0

0.7000 0.000 2.000 4.000 6.000 8.000 Time in Seconds Voltage(PU) 1.174, 0.7129

                                                         - - - - - MCC-1
 -09000 a.

Q) Cl ta

 ';s 0.8000 0.000      2.000        4.000        6.000         8.000 Time in Seconds Voltage(PU) 1.169, 0.7221
                                                ------ -                 MCC-2 50.9000 a.

Q) Cl ta g0.8000 0.000 2.000 4.000 6.000 8.000 Time in Seconds L:\ Electrical Analysis\EA-ELEC-E DSA- 03 R2 LO CA w-offsite pwr (EC42422)\Electronic fil es\App V Plots-82 -Z-isoC D_lC.docx Page 2 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus lC via SU 1-2 iso CD AppendixV Voltage(PU) 1.191 , 0.6990

                                             ------- -                MCC-21 0.9000 5'

Cl.

 'ii, C>
 ~ 0.8000 0

0.7000 0.000 2.000 4.000 6.000 8.000 Time in Seconds Voltage(PU) 1.227 , 0.6817 0.9000 --------- - MCC-22 Cl.

 'ii, C>
 ~    0.8000 0

0.7000 0.000 2.000 4.000 6.000 8.000 Time in Seconds Voltage(PU) 1.191 , 0.6995

                                             ------- -                MCC-23 0.9000 5'

Cl.

 'ii, C>
 ~ 0.8000 0

0.7000 0.000 2.000 4.000 6.000 8.000 Time in Seconds L:\El ectri cal Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic fil es\App V Pl ots-B2 -Z-iso CD_lC.do cx Page 3 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1C via SU 1-2 iso CD AppendixV Voltage(PU) 1.223 , 0.6815 0.9000 ------- - MCC-24 5 c.. Q) Cl

  .l!l 0.8000 0

0.7000 0.000 2.000 4.000 6.000 8.000 Time in Seconds Voltage(PU) 1.164, 0.7220

                                                     ---- -          MCC-25 50.9000 c..

Q) Cl

 .l!l g0.8000 0.000      2.000         4.000    6.000         8.000 Time in Seconds Voltage(PU) 1.169, 0.7296
                                             .------ -               MCC-26 50.9000 c..

Q) Cl nl g 0.8000 0.000 2.000 4.000 6.000 8.000 Time in Seconds L:\Electrical Analysis\EA-ELEC-ED SA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic files\App V Plots-82-Z-isoCD_lC.docx Page 4 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1C via SU 1-2 iso CD AppendixV Voltage(PU) and Current(PU) 0.800 5.00

                                                                                                          -   P7B-(SW)

P7B-(SW) 4.00 0.600 a. 5' a. Q) 3. 00 .:;' Cl 2.385, 1.12 C Cll

  ~ 0.400                                                                                            ...

I!!

I

 >                                                                                           2.00

(.) 0.200 1.00 0.000 0.00 0.000 2.000 4.000 6.000 8.000 Time in Seconds Voltage(PU) and Current(PU)

                                                                                                         -    P52A-(CC) 0.800                                                                                5.00         111  P52A-(CC) 4.00
 - 0.600 a.

5' a. Q) Cl 1.732, 1.22 3.00 i: Cll

 ~ 0.400                                                                                            ~

I

 >                                                                                                 (.)

2.00 0.200 1.00 0.000 0.00 0.000 2.000 4.000 6.000 8.000 Time in Seconds L:\Electrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic fil es\App V Plots-B2-Z-isoCD_l C.docx Page 5 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1C via SU 1-2 iso CD AppendixV Voltage(PU) and Current(PU)

                                                                                                           -   P52C'r(CC) 5.00 0.800                                                                                               111 P52C'r(CC) 4 .00 0.600 5"                                                                                                ::::,

c.. c.. Q) Cl j1.746 , 1.21 j

3. 00 ....C:

ra

 'g    0.400                                                                                         ~

J

 >                                                                                           2.00

(.) 0.200 1.00 0.000 0.00 0.000 2.000 4 .000 6. 000 8. 000 Time in Seconds Voltage(PU) and Current(PU)

                               /  -                                                                        -   P54A-(CS) 0.800                                 -~"                                             6.00 111 P54A-(CS) 5.00
 -     0.600 c..

4 .00 5" c.. Q) .::."" Cl j4 .387, 1.11 C: ra

 'g    0.400                                                                                 3. 00   ~

J

 >                                                                                                 (.)

2.00 0.200 1.00 0.000 000 0.000 2.000 4 .000 6.000 8.000 Time in Seconds L:\Electrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\E lectron ic files\App V Plots-82-Z-isoCD_l C.docx Page 6 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus lC via SU 1-2 iso CD AppendixV Voltage(PU) and Current(PU) 6.00 - P54B-(CS) 0.800 Ill P54B-(CS) 5.00 _ 0.600 Q. 4.00 5 Q. cii' i: Cl 4.279, 1.05

 'E (II 0.400 3.00   ...~

i

 >                                                                                                    u 2.00 0.200 1.00 0.000                                                                                  0.00 0.000            2.000              4.000             6.000               8.000 Time in Seconds Voltage(PU) and Current( PU)
                                                                                                                  -    P55A 0.800 4.00          Ill  P55A 0.600 3.00 5                                                                                                         5 Q.                                                                                                        Q.

cii' .:;' Cl 12.504, 0.60 C

 ~ 0.400                                                                                            2.00    ...~

g u

i 0.200 1.00 0.000 000 0.000 2.000 4.000 6.000 8.000 Time in Seconds Timeaccel =2.504- 1.596 =0.908 seconds L:\El ectr ical Analysis\EA-ELEC-EDSA-0 3 R2 LOCA w-offsite pwr (EC42422)\ Electronic files\A pp V Plots-82-Z -i soC D_l C. docx Page 7 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1C via SU 1-2 iso CD AppendixV Voltage(PU) and Current(PU)

                                                                                                             -   P55C 0.800                                                                                     5.00         Ill P55C 4.00 0.600 5"                                                                                                    5" c..                                                                                                   c..

wlj) 3.00 ....C ra

 ~ 0.400                                                                                                ...~

l

 >                                                                                                     (.)

2. 227, 0.825 2.00 0.200 1.00 0.000 0.00 0.000 2.000 4.000 6.000 8.000 Time in Se conds Timeacce1 = 2.227 -1.565 = 0.662 se conds Voltage(PU) and Current(PU) 5.00 - P56A 0.800 Ill P56A 4.00 0.600 5" 5" c.. c..

wlj) 3.00 i: ra

 ~ 0.400                                                                                                ~

l

 >                                                                                              2.00

(.)

4. 971 , 0.66 0.200 1.00 0.000 0.00 0.000 2.000 4.000 6.000 8.000 Time in Seconds Timeacce1 =4 .971- 2.280 =2.691 seconds L:\Electri cal Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic files\App V Plots-B2-Z-isoCD_lC.docx Page 8 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1C via SU 1-2 iso CD Appendix V Voltage(PU) and Current(PU) 6.00

                                                                                                                 -   P56B 0.800                                                                                                       Ill P56B 5.00 l

I 0.600 I 4.00 I 5 5 c.. a, Cl 3.00 C. C cu

 ~ 0.400                                                                                                    ~
 >                                                                                                         u I [6 362 , 0.66       2.00 0.200 1.00 0.000                                                                                        0.00 0.000              2.000             4.000               6.000                   8.000 Time in Seconds Timeaccel   =6.362 -     3.987 =2.375 seconds Voltage(PU) and Current(PU)
                                                                                                       -       P66A-(HPSI) 0.800                                                                                             111     P66A-(HPSI) 4.00
 -   0.600

J 3.00 5 c.. c..

a, Cl "E cu

 ~ 0.400                                                                                          ~

2.00 :::s

 >                                                                                               u 4.086, 0.99 0.200                                                                                 1.00 0.000                                                                                 0.00 0 .000           2.000            4.000             6.000                8.000 Time in Seconds L:\Electrical Analysis\EA-ELEC-EDSA-03 RZ LOCA w-offsite pwr (EC42422)\E lectronic files\App V Plots-B2-Z-isoCD_lC.docx Page 9 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1C via SU 1-2 iso CD AppendixV Voltage(PU) and Current(PU)

                                                                                                       -    P66B-(HPSI) 0.800                                                                                             111  P66B-(HPSI) 4.00

_ 0.600

 =>                                                                                       3.00  =>

Cl. Cl. Q) ....C: Cl cu

g 0400 ~

2.00 ::s

 >                                                                                              (.)
                                                 ' 3.996, o.88 J 0.200                                                                                1.00 0.000                                                                                0.00 0.000             2.000              4.000            6.000             8.000 Time in Seconds Voltage(PU) and Current(PU) 5.00
                                                                                                        -   P67A-(LPSI) 0.800                                                                                              111 P67A-(LPS1) 4.00 0.600 5                                                                                        3. 00 5 Cl.                                                                                             Cl.

Q) Cl c cu

g 0400 ~

2.00 ::s

 >                                                                                               (.)
                                *1.982 , 1.10 I 0.200                                                                                1.00 0.000                                                                                0.00 0.000            2.000               4.000            6.000              8.000 Time in Seconds L:\Electrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsi te pwr (EC42422) \Electronic files\App V Plots-B2 -Z-isoCD_lC.docx Page 10 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1C via SU 1-2 iso CD AppendixV Voltage(PU) and Current(PU) 5.00

                                                                                                           -     P67B-(LPSI) 0.800                                                                                                 111   P67B-(LPSI )

4 .00

 -   0.600 fl.

3.00 5 fl. Q) C) C Ol

 ~ 0.400                                                                                           ...~

I

 >                                                                                        2.00    u
                               ' 2.005, 1.21 0.200                                                                                1.00 0.000                                                                                0.00 0.000             2.000            4.000            6.000              8.000 Time in Seconds Voltage(PU) and Current(PU)
                                                                                            ~ 6.00             -   MCC-1 -X 0.800                                                                                                     n* MCC-1-X
                                                                                            ~  5.00 0.600 5                                                                        /6505, 2.45       ~ 4.00 5 fl.                                                                                                    fl.

Q) C) c Ol

                                                                                            ~ 3.00       ~
 ~ 0.400                                                                                                 ::I
 >                                                                                                      u
                                                                                            ,_ 2.00 0.200
                                                                                            ,_ 1.00 0.000                                                                                     0.00 I                  I                  I                I                    I 0.000              2.000             4 .000           6 .000                8.000 Time in Seconds L:\Electrical Analysis\EA-ELEC-EDSA-03 RZ LOCA w-offsite pwr (EC42422)\Electronic fil es\App V Plots-B2-Z-isoCD_lC.do cx Page 11 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1C via SU 1-2 iso CD AppendixV Voltage(PU) and Current(PU) 5.00

                                                                                                          -   MCC-2-X 0.800                                                                                           Ill MCC-2-X
                                                       '"'\                                  4.00

_ 0.600

, \ ::::,

ll.. ai Cl cu

3.00 ll.. C:

I

    >                                                                                        2.00   u 5.320, 242 ]

0.200 1.00 0.000 0.00 0.000 2.000 4.000 6.000 8.000 Time in Seconds i; oono r,,no.110,J J All-X04-SUB1-2 (SU 1-2 To Bus lC) - Current - Peak-0.1101 pu L: \Electrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic files\App V Plots-B2 -Z-isoCD_l C.docx Page 12 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1C via SU 1-2 iso CD AppendixV All-X04-SUB1-2 (SU 1-2 To Bus 1() - Cu rrent - Steady State - 0.0363 pu A12-X04-SUB1-2 (SU 1-2 To Bus 10) - Current - Peak- 0.0740 pu L:\Electrical Analysis\ EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic files\App V Plots-82-Z-i soC D_lC.docx Page 13 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1C via SU 1-2 iso CD AppendixV A12-X04-SUB1-2 (SU 1-2 To Bus lD) - Current - Steady State - 0.0358 pu L:\Electrical Analysis\EA-ELEC-EDSA-0 3 R2 LOCA w-offsite pwr (EC42422)\Electronic files\App V Plots-B2-Z-isoCD_1C.docx Page 14 of 14

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1C via SU 1-2 iso CD AppendixW Voltage(PU) 0.9500

                                                                      -  Bus-1C
 ~    0.9000 Q)

Cl 1.130, 0.7771

 ~ 0.8500 0

0.8000 0.000 2.000 4.000 6.000 8.000 Time in Seconds Voltage(PU) 0.9500

                                                                      -  Bus-1C
 ~0.9000 Q)

Cl 3.713, 0.9326

 ~ 0.8500 0

0.8000 0.000 2.000 4.000 6.000 8.000 Time in Seconds Voltage(PU) 0.9500

                                                                      -  Bus-1C
 ~ 0.9000 Q)

Cl 3.902 , 0.8875

 ~ 0.8500 0

0.8000 0.000 2.000 4.000 6.000 8.000 Time in Seconds L:\ El ectrical Analysis\EA-ELEC-EDSA-0 3 RZ LO CA w-offsite pwr (EC42422)\Electronic files\App W Plot-82.1-Z-isoCD_l C.docx Page 1 of 5

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1C via SU 1-2 iso CD AppendixW Voltage(PU) 0.9500

                                                                  -  Bus-1C
 ~   0.9000 Q)

C) ~ . 0.9328

 ~ 0.8500 0

0.8000 0.000 2. 000 4.000 6.000 8.000 Time in Seconds Voltage(PU) 0.9500

                                                                  -  Bus-1 0
 ~0.9000 Q)

C) 1.149, 0.7813 IU

 ~ 0.8500 0.8000 0.000        2.000        4.000      6.000        8.000 Time in Seconds Voltage(PU) 0.9500
                                                                  - Bus-1 0
 ~ 0.9000 Q)

C) IU

 ~   0.8500 0.8000 0.000        2.000        4.000      6.000        8.000 Time in Seconds L:\Electrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic files\App W Plot-82. 1-Z- isoCD_l C.docx Page 2 of 5

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1C via SU 1-2 iso CD AppendixW Voltage(PU) 0.9500

                                                                   -  Bus-1D
 ~ 0.9000
 ~

C) @j§_4~ 8870

g"' 0.8500 0.8000 0.000 2.000 4.000 6.000 8.000 Time in Seconds Voltage(PU) 0.9500

                                                                   -  Bus-1 D
 ~0.9000
 ~

C) 6.632, 0.9328

g"' 0.8500 0.8000 0.000 2.000 4.000 6.000 8.000 Time in Seconds L:\Electrica l Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electro nic files\App W Plot-B2.1 -Z- isoCD_lC.docx Page 3 of 5

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1C via SU 1-2 iso CD AppendixW Voltage(PU) and Current(PU) 7.00 - P54A-(CS) 0.8000 111 P54A-(CS) 6.00

  -0.6000                                                                                 5.00

> 5a..

a..

  '"ai" Cl ra
  ~ 0.4000 3.886, 0.8838 J 4.00   -...

C: 2!

I

  >                                                                                       3.00   u 2.00 0.2000 1.00 0.0000                                                                            0.00 0.000         2.000            4.000              6.000             8.000 Time in Seconds Slip(PU) and Speed(PU) 1.00                                                                            1.00
                                                                                                      -    P54A-(CS) 111  P54A-(CS) 0.80                                                                            0.80 0.60                                                                            0.60   ::>

5a.. a.. 6.400, 0.98 ~

§: Q)

Q) en 0.40 0.40 U) a. 0.20 0.20 0.00 0.00 0.000 2.000 4.000 6.000 8.000 Time in Seconds L:\Electrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic files\App W Plot-82 .1-Z-isoCD_lC.docx Page 4of5

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1C via SU 1-2 iso CD AppendixW Voltage(PU) and Current(PU) 7.00 - P54B-(CS) 0.8000 111 P54B-(CS) 6.00 0 6000 5.00 5' a.. 5' a.. wC) 3.860, 0.8858 4.00 C: ra

  ~ 0.4000 Q)

I

  >                                                                                             3.00 (.)

2.00 0.2000 1.00 0.0000 0.00 0.000 2.000 4.000 6.000 8.000 Time in Seconds Slip(PU) and Speed(PU) 1.00 1.00

                                                                                                             -   P54B-(CS) 111 P54B-(CS) 0.80                                                                                   0.80 0.60                                                                                   0.60 5' 5'

a.. a..

g: 6.302 , 0.98 Q)

Q) iii C. 0.40 0.40 (/) 0.20 0.20 ___j I 0.00 0.00 0.000 2.000 4.000 6.000 8.000 Time in Seconds L: \ El ectri cal Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic fil es\App W Plot-B2.l-Z-isoCD_lC.docx Page 5 of 5

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1C via SU 1-2 iso CD AppendixX Voltage(PU)

                                                                     -  Bus-1C 0.9300 Q.

Q) Cl 1.205, 0.9102

  ~ 0.9200 0

0000 1.000 2.000 3.000 4.000 5.000 Time in Seconds Voltage(PU)

                                                                     -  Bus-1C 0.9300 5'

Q. Q) Cl 3.962, 0.9328

  ~ 0.9200 0

0.000 1.000 2.000 3.000 4.000 5.000 Time in Seconds Voltage(PU)

                                                                     - Bus-10 0.9300 Q.

Q) Cl 11206, 0.9119 ra

  ~ 0.9200 0.000       1.000      2.000     3.000     4.000   5.000 Time in Seconds L: \ El ectrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic fi les\App X Plot- 8 4. l -isoCD-l C.docx Page 1 of 3

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1C via SU 1-2 iso CD AppendixX Voltage(PU)

                                                                     -  Bus-1D 0.9300 a.
 ~

C) 3.973, 0.9328

 ~"' 0.9200 0.000      1.000        2.000      3. 000    4.000   5.000 Time in Seconds Voltage(PU) and Current(PU)
                                                                                         ,.. 8.00 0.800
                                ,1r..~
                                         -~-                                                              ...
                                                                                                          -   P54C-(CS)

P54C-(CS)

                                                                                         ,.. 6.00
 -   0.600 a.

5" a.

C) 11. 144, 0.908 i - 4.00 C:Q)

 ~ 0.400

I

 >                                                                                                (.)
                                                                                         -2.00 0.200 0.000                                                                                   0.00 I               I                 I             I            I           I 0.000           1.000             2.000         3.000       4 .000       5.000 Time in Seconds L:\Electrical Analysis\EA-ELEC-EDSA-03 R2 LOCA w-offsite pwr (EC42422)\Electronic files\App X Plot-84.1-isoCD-lC.docx Page 2 of 3

Transient Stability EA-ELEC-EDSA-03, Rev 2 Max Starting Load on Bus 1C via SU 1-2 iso CD AppendixX Slip(PU) and Speed(PU) 1.00 1.00

                                                                                                             -   P54C-(CS)

Ill P54C-(CS) 0.80 0.80 0.60 0.60 5' 5' c.. c.. ci: [3426, 0.98 "C Cl) Cl) en 040 040 C. (/) 0.20 0.20 0.00 0.00

         . 0.000           1.000          2.000          3.000          4.000             5.000 Time in Seconds L:\Electrical Analysis\EA-E LEC- ED SA-03 R2 LOCA w-offsite pwr (EC4 2422)\Electronic fil es\App X Plot- B4. 1-isoCD -1C.docx Page 3 of 3}}

PNP 2018-010, Attachment 8: LOCA with Offsite Power Available Calculation

Text

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1.0 INTRODUCTION

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