ML071570501

CC-AA-309-1001, Rev 3, Attachment 1, Design Analysis Major Revision Cover Sheet, 9389-46-19-1, Rev 003 Diesel Generator 3 Loading Under Design Bases Accident Condition

ML071570501
Person / Time
Site:	Dresden
Issue date:	04/05/2007
From:	McCarthy G, Scott S Sargent & Lundy
To:	Office of Nuclear Reactor Regulation
References
FOIA/PA-2010-0209 9389-46-19-1, Rev 003, CC-AA-309-1001, Rev 3
Download: ML071570501 (123)

Text

I ATTACHMENT I Design Analysis Major Revision Cover Sheet Page I of I CC-AA-309-1001 Revision 3 Page 1.0-0 Design Analysis (Major Revision)

L.Last Page No. 14,0-8 and R81 Analysis No.: 9389-46-19-1 Revision:

003 Title: Diesel Generator 3 Loading Under Design Bases Accident Condition EC/ECR No.: EC 364066 Revision:

000 Station(s):

Dresden I Components(s)

Unit No.: 3 Various Discipline:

E Description Code/Keyword:

E15 ....................

Safety/QA Class: SR F S ystem C ode: 66 .................

__ ......... .Structure:

N/A ..........

_CONTROLLED DOCUMENT REFERENCES Document No. From/To Document No. From/To See Section XIV Is this Design Analysis Safeguards Information?

Yes El No Z If yes, see SY-AA-101-106 Does this Design Analysis Contain Unverified Yes El No 0 If yes, ATI/AR#Assumptions?

This Design Analysis SUPERSEDES:

N/A in its entirety Description of Revision (list affected pages for partials):

See Page 1.0-3 for a description of this revision and a list of affected pages.Preparer Scott Shephard .VIYIO 7 Print Name .. 4- "'0V Date Method of Review Detailed Review ~ Alternate Calculations (attached)

Testing Reviewer Glenn McCarthy 4 1 Print Name Sign Name I Date Review Notes: Independent Review [ Peer Review El (For Eden-al Ana~yes Only)External Approver '(/,ZCV______________

Print Name Sign Name Date Exelon Reviewer T C~ a d1 a-~ we~ /i'/a Print Name Si4'n Name Date Independent 3 rd Party Review Required?

Yesr-l No '_ --Exelon Reviewer _ #1 4-4) 4 Print Name Sign Name Date Calculation For Diesel Generator 3 Loading Under Calc. No. 9389-46-19-1

'SARGENT&

LUNDY Design Bases Accident Condition R." ORIGI'NA X ISafety-Related Non-Safety-Related Page , , -/ of Client CorEd Prepared by Date /0-0'-Project Dresden Station Unit 3 Reviewed by rDate Proj. No. 9389-46 Equip. No. Approved by Z 6 MA .,ate ,o/0,!J DIVISION:

EPED FILE: 15B SYSTEM CODE: 6600 NOTE FOR THE PURPOSE OF MICROFILMING THE PROJ. NO. FOR THE ENTIRE CALC. IS "9389-46" I. REVISION

SUMMARY

AND REVIEW METHOD A. Revision 0 Revision 0, Initial issue, all pages.This calculation supersedes the Calculation for Diesel-Generator Loading Under Design Basis Accident Condition , Calculation Number 7317-33-19-1

.The major differences between Calculation 7317-33-19-1 and this calculation are as follows: 1) Dresden Diesel Generator (DG) surveillance test strip charts (Reference

23) show that the first LPCI pump starts almost 3.5 seconds after the closure of the DG output breaker. This is due to the under voltage (UV) relay disk resetting time.This revision shows that the 480V auxiliaries start as soon as the DG output breaker closes to the bus and the first LPCI pump starts approximately

3.5 seconds

after the closure of the DG output breaker during Loss Of Offsite Power (LOOP) concurrent with Loss Of Coolant Accident (LOCA).2) Created new ELMS-AC PLUS files for the DG for Unit 3 based on the latest base ELMS modified file D3A4.M21, including all modifications included in Revisions 0 through 14 of Calculation 7317-43-19-2 for Unit 3. Utilization of the ELMS-AC PLUS program in this calculation is to maintain the loading data base and totaling the running KVA for each step.3) Additional loading changes were made due to DITs DR-EPED-0863-00, which revised lighting loads, and DR-EAD-0001-00, which revised the model for UPS and Battery Chargers.

For non-operating loads in base ELMS-AC file, running horsepower was taken as rated horsepower for valves and 90% of rated horsepower for pumps, unless specific running horsepower data for the load existed.4) Created Table 4 for totaling 480V loads starting KW/KVAR for determining starting voltage dip from the DG Dead Load Pickup Curve.

Calculation For Diesel Generator 3 Loading Under Calc. No. 9389-46-19-1 GENT &LUN ,Design Bases Accident Condition IR. I oDate EGEESJX ISafety-Related I Non-Safety-Related Page /'60 -2? of Client ComEd Prepared by Date Project Dresden Station Unit 3 Reviewed by Date Proj. No. 9389-46 Equip. No. Approved by ....... Date I. Revision Summary and Review Method (Cont)Revision 1 In this revision, the following pages were revised: 1.0-1, 1.0-3, 2.0-1, 2.0-2, 2.0-3, 4.0-6, 7.0-1, 10.0-1 through 10.0-8, 11.0-1, 13.0-1, 14.0-1.14.0-5, 14.0-7, C2, C3, C4, C6, D2, El, E2, J4, J5, J6, J9, J10, Jll The following pages were added: 1.0-2, 2.0-4, Section 10.1 (pages 10.1-0 through 10.1-26), Section 15.0 (Pages 15.0-0 through 15.0-32), ELMS AC Reports pages F101 through F224, 13.The following pages were deleted: 10.0-9 through 10.0-24, B15 For completeness, all text pages are being issued to correct various typographical errors throughout the text, however, revision bars were not used for these types of changes.This revision incorporates load parameter changes determined in Revision 18 of Calculation 7317-43-19-2 (Ref. 26) into the ELMS-AC data file models used in this calculation to model generator operation.

The most critical of these changes is the CCSW Pump BHP change from 450 hp to 575 hp. These load parameter changes normalize the DG data files so that file update can be made easily and accurately with the comparison program ELMSCOMP.

In addition to the load/file changes, the calculation portion of the text dealing with determining starting KVA and motor start time for the 4.16 KV motors has been encoded into the MATHCAD program. This will simplify any future changes, and decrease the possibility of calculation error. ELMSCOMP reports showing data transfers and so forth will be added in a new attachment.

Please note: The BHP of CCSW Pump Motors is based on the nameplate rating of 500 hp with a 575 hp @ 90'C Rise. This assumption of CCSW Pump Motor BHP loading requires further verification.

CALCULATION REVISION

SUMMARY

CALC NO. 9389-46-19-1 REVISION 003 PAGE NO. 1.0-3(f Revision Summary and Review Method (cont'd)Revision 2 EC 364066 was created for Operability Evaluation

1. 05-005. This operability evaluation concluded that the diesel generator load calculation trips one Low Pressure Coolant Injection (LPCI) pump before the first CCSW pump is loaded onto the diesel, at which point the diesel is supplying one Core Spray pump, one LPCI and one CCSW pump. In contrast, station procedure DGA-12, which implements the manual load additions for LOCA/LOOP scenarios, instruct operators to load the first CCSW pump without tripping a LPCI pump. The procedure directs removal of a LPCI pump from the EDG only before loading of the second CCSW pump. In accordance with Corrective Action #2 of the Operability Evaluation, Calculations 9389-46-19-1,2,3 "Diesel Generator 3,2,2/3 Loading Under Design Basis Accident Condition" require revision to document the capability of the EDGs to support the start of the first CCSW pump without first tripping a LPCI pump.This revision incorporates the changes resulting from EC 364066, Rev. 000. In addition, this revision replaces the ELMS-AC portions of the calculation with ETAP PowersStation (ETAP). All outstanding minor revisions have been incorporated.

The parameters for valve 3-1501-22A/B were also revised in the ETAP model to reflect the latest installed motor. Section 10 calculations previously performed using MathCad were replaced with MS Excel spreadsheets.

In this revision the following pages were revised: 2.0-4, H2, H3, R18-R21, R61 In this revision the following pages were replaced: 1.0-3, 2.0-1, 2.0-2, 3.0-1, 4.0-1, 4.0-6, 5.0-1, 7.0-1, 8.0-2, 8.0-5, 9.0-1 -9.0-5, 10.0-1, 10.0-3 -10.0-8, 10.1-0 -10.1-26, 11.0-1, 14.0-1, 14.0-6, 14.0-7, Cl-C5, F1-F224 replaced by F1-F118, GI replace by G1-G63 In this revision the following pages were added: Design Analysis Cover Sheet (1.0-0), 2.0-5, R62-R76 In this revision the following pages were deleted: 15.0-0 -15.0-32, Attachment I This revision incorporates various changes to the EDG loading. Major changes include CS, LPCI and CCSW BHP values. Other changes include decreasing the LOCA bhp value for the RPS MG set and incorporating the DG cooling water pump replacement.

New study cases and loading categories were generated in ETAP to model loading of the 4kV pumps after 10 minutes into the event. The scope was expanded to include a comparison of the DG loading at 102% of rated frequency to the 2000hr rating of the diesel. This revision incorporates changes associated with References XIV.64 through 72.In this revision the following pages were revised: A5, B7, E2, R76 In this revision the following pages were replaced: 1.0-0, 1.0-3, 2.0-1, 2.0-2, 2.0-5, 3.0-1, 3.0-2, 4.0-6, 5.0-1, 7.0-1, 9.0-1 -9.0-3, 9.0-5, 10.0-1, 10.0-8, 10.1-1, 10.1 10.1-6, 10.1-8, 10.1 10.1-13, 10.1-15, 10.1 10.1-18, 10.1 10.1-26, 11.0-1, 12.1-0, 14.0-1, 14.0-7, C1, Attachments F and G.In this revision the following pages were added: 4.0-7, 14.0-8, R77-R81 CALCULATION TABLE OF CONTENTS CALC NO.: 9389-46-19-1 REV NO: 003 PAGE NO. 2.0-1 SECTION PAGE NO.: SUB PAGE NO.: II TABLE OF CONTENTS / FILE DESCRIPTION I. COVER SHEET / REVISION

SUMMARY

& REVIEW METHOD II. TABLE OF CONTENTS / FILE DESCRIPTION III. PURPOSE/SCOPE IV. INPUT DATA IV. ASSUMPTIONS VI. ENGINEERING JUDGEMENTS VII. ACCEPTANCE CRITERIA VIII. LOAD SEQUENCING OPERATION IX. METHODOLOGY X. CALCULATIONS AND RESULTS XI. COMPARISON OF RESULTS WITH ACCEPTANCE CRITERIA XII. CONCLUSIONS XIII. RECOMMENDATIONS XIV. REFERENCES 1.0 1.0-3 2.0-1-2.0-5 3.0-1 -3,0-2 4.0-1 -4.0-7 5.0-1 6.0-1 7.0-1 8.0-1 -8.0-6 9.0-1 -9.0-7 10.0-1 -10.0-8 10.1 10.1-26 11.0-1 -11.0-2 12.0-1 13.0-1 14.0-1 -14.0-8 R3 R3 CALCULATION TABLE OF CONTENTS (Continued)

CALC NO.: 9389-46-19-1 REV NO: 003 PAGE NO. 2.0-2 SECTION PAGE NO.: SUB PAGE_ I_ NO.: Attachments Description A Table 1 -Automatically Turn ON and OFF Devices Under the Design Basis Accident Condition when DG3 is powering the Unit 3 Division II loads. Al-All B Table 2 -The Affects of AC Voltage Dip on control circuits of Dresden Unit 3, Division II when large motor starts. Bl-B13 C Table 4 -Starting KW and KVAR for all 480V Loads at each Step when DG 3 is powering Unit 3, Division II. Cl-C5 D Figure 1 -Single Line Diagram when DG 3 Powers SWGR 34-1 D1-D2 E Figure 2 -Time Vs. Load Graph when DG 3 Powers SWGR 34-1 El-E2 F DG Unit 3 Division II ETAP Output Reports -Nominal Voltage Fl-F115 G DG Unit 3 Division II ETAP Output Reports -Reduced Voltage G 1 -G58 R3 H Flow Chart 1 -Method of Determining Shed and Automatically Started Loads H1-H3 J Unit 3 ELMS-AC Plus Data Forms J1-J12 R Reference Pages Rl-R81 R3 Note: Table 3 has been omitted.

SAR"ENT & LUNDYI Calculation For Diesel Generator 3 Loading Under Design Bases Accident Condition X .Safety-Related 1 Non-Safety-Related CaIc. No. 9389-46-19-1 Rev. I 0Date Page 2.,0- 3 of Client Cor .Ed Project Dresden Station Unit 3 Proj. No. 9389-46 Equip. No.Prepared by Date Reviewed by Date I Approved by IDate I I File Descriptions Revision 0 File Name Date Time File Description D3A4DGD.GOO 12/29194 1413 General File -Original Issue D3A4DGDR.GOO 12/29/94 1418 General File -Original Issue -Reduced Voltage D3A4DGD.I00 12130194 1209 Initial File -Original Issue D3A4DGDR.100 12/30/94 1238 Initial File -Original Issue -Reduced Voltage D3TB1DGD.XLS 1/6/95 1505 Table 1 -Excel File D3TB2DGDXLS 1/6/95 1512 Table 2 -Excel File D3TB4DGDXLS 1/6/95 1020 Table 4 -Excel File D3GRFDGD.XLS 1/6/95 1015 Time vs. Load Graph DRESDGD3.00 1/5/95 1038 Flow Chart I D3SINGLE.PPT 12/28/94 1138 Sketch of Unit 3 safety system -Powerpoint DRESDGD.WP 1/6/95 Calculation Text -Wordperfect

& LUNDY ENGNEEPS Calculation For Diesel Gi Design Bases Acc Xh I~afeyRted enerator 3 Loading Under Caic. No. 9389-46.19-1 eont Condition Re.v. I ...t.I .Non-Safety-Related lPage 2.0- ,+ of Prepared by Date Reviewed by Date Approved by Date ICie~nt CornEd I Client CornEd Project Dresden Station Unit 3 jProj. No. 9389-46 Equip. No.Proj....No......9-48I EquipII No.File Description (cont'd)Revision I File Name Date Time File Description D3A4DGD.GOI 10/17/96 03:22:20pm General File -Data upgrade, see Revision Summary for Details D3A4DGDR.G01 10/17/96 04:06:04pm General File -Reduced Voltage, see Revision Summary for Details D3A4DGD.101 09/10/96 10:36:52pm Initial File -Data upgrade, see Revision Summary for Details D3A4DGDR.101 10/13/96 03:35:48pm Initial File -Reduced Voltage, see Revision Summary for Details DG3GRAFI.XLS 10/17/96 2:45:06pm Time Vs Load Graph In Excel D3TBL4RI.XLS 10/18/96 2:03:00pm Table -Excel File DG3SLINE.PPT 09/19/96 6:58:50pm Sketch of Unit 3 safety system -Powerpoint DG3MCAD.MCD 10/18/96 10:33:48pm Mathcad File for Section 10.1 DREDG3R1.WP 10118/96 Calculation Text -Wordperfect CALCULATION PAGE CALC NO. 9389-46-19-1 REVISION 003 PAGE NO. 2.0-50ri)File Descriptions (cont'd)Revision 2 I File Name Size Date Time File Description 9389-46-19-1 Rev. 2,doc 496640 bytes 8/9/06 8:58:04am Text document 9389-46-19-1 Rev. 2 (section 10).xls 532992 bytes 8/03/06 10:16:22am Section 10.1 9389-46-19-1 Rev. 2 (table 4).xls 48128 bytes 4/24/06 1:10:29pm Table 4 DREUnit3_0004.mdb 18,509,824 bytes 8/03/06 1:41:09am ETAP database DREUnit3_0004.macros.xml 10568 bytes 8103/06 11:12:31am ETAP macros DREUnit3_0004.scenarios.xml 12388 bytes 2/28/06 11:18:23am ETAP Scenarios DREUnit3_0004.oti 16384 bytes 8/03/06 1:41:08am ETAP "OTI" file Revision.3 File Name Size Date Time File Description 9389-46-19-1 Rev. 3.doc SO,7F ,." '4" t ,/1 74 7: V5 Text document 9389-46-19-1 Rev. 3 (section 10).xls 526848 bytes 3/2/07 8:50:48am Section 10.1 9389-46-19-1 Rev. 3 (table 4).xls 48128 bytes 3/1/07 7:52:12pm Table 4 DREUnit3_0005.mdb 19,559,360 bytes 3/29/07 8:17:29am ETAP database DRE_Unit3_0005.macros.xml 11293 bytes 3/21/07 2:47:02pm ETAP macros DREUnit3_0005.scenariosxml 15500 bytes 2/26/07 7:50:53pm ETAP Scenarios DRE Unit3_0005.oti 16384 bytes 3/29/07 8:32:57pm ETAP "OTI" file R3 CALCULATION PAGE CALC NO. 9389-46-19-1 REVISION 003 PAGE NO. 3.0-1 IIi PURPOSE!SCOPE A. Purpose The purpose of this calculation is to ensure that the Dresden Diesel Generator has sufficient capacity to support the required loading during the maximum loading profile as determined in the Calculation Results section.The purpose of this calculation includes the following:

1) Determine automatically actuated devices and their starting KVA at each step for the ac electrical load when the DG is powering the safety related buses.2) Develop a Time versus Load profile for the DG when the DG is powering the safety related buses.3) Compare the maximum loading in ETAP for the DG load profile against the capacity of the DG at each step.4) Determine the starting voltage dip and one second recovery voltage at the DG terminals for initial loading and each 4000V motor starting step.5) Evaluate the control circuits during the starting transient voltage dip.6) Evaluate the protective device responses to ensure they do not inadvertently actuate or dropout during the starting transient voltage dip.7) Evaluate the travel time of MOVs to ensure they are not unacceptably lengthened by the starting transient voltage dips.8) Determine the starting duration of the automatically starting 4kV pump motors.9) Ensure the loading on the EDG is within the 2000hr rating should the frequency on the machine increase to its maximum allowable value. R3 10) Determine the minimum power factor for the long term loading on the EDG.B. Scope The scope of this calculation is limited to determining the capability of the DG to start the sequential load (with or without the presence of the previous running load as applicable), without degrading the safe operating limits of the DG or the powered equipment

& services.

The minimum voltage recovery after 1 second following each sequential start will be taken from the DG dead load pickup characteristics and compared to the minimum recovery required to successfully start the motors and continue operation of all services.I CALCULATION PAGE CALC NO. 9389-46-19-1 REVISION 003 PAGE NO. 3.0-2(tsmj.

PURPOSE/SCOPE (cont'd)The total running load of the DG will also be compared against the rating of the DG at the selected loading step to confirm the loading is within the DG capacity.

The scope will also include an evaluation based on review of identified drawings to determine the effects on control functionality during the transient voltage dips.The EDG has a minimum and maximum allowable frequency range. Operating the EDG at a frequency above its nominal value results in additional loading on the EDG. The percent increase in load due to the increase in frequency will be quantified and compared to the EDG 2000 hr rating to ensure the limits of the EDG are not exceeded.

The minimum power factor for EDG long term loading will be quantified.

The scope will also include an evaluation of protective devices which are subject to transient voltage dips.The scope does not include loads fed through the cross-tie breakers between Unit 2 and 3 Buses of the same Division.

Although DGA-12, Rev. 16 allows its use, loading is performed manually at Operations' discretion and is verified to be within allowable limits during manual loading.Therefore, this operation is not included in the scope of this calculation.

CALCULATION PAGE CALC NO.9389-46-19-1 REVISION 002 PAGE NO. 4.0-1 IV INPUT DATA The input data extracted from the references is summarized below: A. Abbreviations ADS Automatic Depressurization System AO Air Operated CC Containment Cooling CCSW Containment Cooling Service Water Cig Cooling Clnup Clean up Cnmt Containment Comp Compressor Compt Compartment Diff Differential DIT Design Information Transmittal DG Diesel Generator DW Drywell EFF Efficiency EHC Electro Hydraulic Control ELMS Electrical Load Monitoring System ETAP Electrical Transient Analyzer Program Emerg Emergency I R2 I SARGENT& LUNDY Calculation For Diesel Generator 3 Loading Under Design Bases Accident Condition X ISafety-Related I INon-Safety-Related Caic. No. 9389-46-19-1 P8 JDate Z Page of Client CornEd Project Dresden Station Unit 3 Proj. No. 9389-46 Equip. No.Prepared by Date Reviewed by Date Approved by Date Input Data (cont'd): ECCS FSAR gpm GE Gen Hndlg HPCI HVAC Inbd Inst Isoln LOCA LOOP LPCI LRC Mon MCC M-G MOV Emergency Core Cooling System Final Safety Analysis System Gallons Per Minute General Electric Generator Handling High Pressure Coolant Injection Heating Ventilation

& Air Conditioning Inboard Instrument Isolation Loss Of Coolant Accident Loss Of Offsite Power Low Pressure Coolant Injection Locked Rotor Current Monitoring Motor Control Center Motor Generator Motor Operated Valve SARGENT& LUNDY ENG04EERS Calculation For Diesel Generator 3 Loading Under Design Bases Accident Condition X Safety-Related Non-Safety-Related Cabc. No. 9389-46-19-1 Pev. I oDate iPage4,0-3 o Client CornEd Project Dresden Station Unit 3 Proj. No. 9389-46 Equip. No.Prepared by Date Reviewed by Date Approved by Date Input Data (cont'd): Outbd PF Press Prot Recirc Rm Rx Bldg SBGT Ser SWGR Stm Suct TB Turb UPS VIv Wtr Xfmr Outboard Power Factor Pressure Protection Recirculation Room Reactor Building Standby Gas Treatment System Service Switchgear Steam Suction Turbine Building Turbine Uninterruptible Power Supply Valve Water Transformer Calculation For Diesel Generator 3 Loading Under SARGE:NT&

LUNDY [Design Bases Accident Condition X ISafety-Related iNon-Safety-Related Calc. No. 9389-46-19-1 Reve "i'" of Page 4 -of Client ComEd Project Dresden Station Unit 3 Proj. No. 9389-46 Equip. No.Prepared by Date Reviewed by Date Approved by Date Input Data (cont'd): B. Emergency.

Diesel Generator Nameplate data for the Dresden Unit 3 is as follows (Reference 24);Manufacturer Electro -Motive Division (GM)Model A C1 Serial No. 68 -El -1013 Volts 2400 / 4160 v Currents 782 / 452 Amps Phase 3 Power Factor 0.8 RPM 900 Frequency 60 KVA 3250 Temperature Rise 85 0 C Stator -Therm 60 0 C Rotor -Res KVA Peak Rating 3575 KVA For 2000 HR YR Temperature Rise 105 0 C Stator -Therm 700C Rotor -Res Insulation Class Stator- H Rotor -F Excitation Volts -144 Amps -100 Diesel Engine Manufacturer Electro -Motive Division (GM)Model No. S20E4GW Serial No. 1159 Calculation For Diesel Generator 3 Loading Under CaIc. No. 9389-46-19-1 S 1 ARGE~NT &LUNDY Design Bases Accident Condition Rev. I 'Date IX Safety-Related INon-Safety-Related Page of QS_ o Client CornEd Prepared by Date Project Dresden Station Unit 3 Reviewed by Date jProj. No. 9389-46 Equip. No.Approved by Date Input Data (cont'd)C. Dead Load Pickup Capability ( Locked Rotor Current) -Generator Reactive Load Vs% Voltage Graph #SC -5056 by Electro -Motive Division (EMD) [ Reference 13].This reference describes the dead load pickup capability of the MP45 Generating Unit.The curve indicates that even under locked rotor conditions an MP45, 2750 kw generating unit will recover to 70% of nominal voltage in 1 second when a load with 12,500 KVA inrush at rated voltage is applied. This indicates that the full range of the curve is usable. Also, page 8 of the purchase specification K-2183 (Reference 12)requires that the Generator be capable of starting a 1250 hp motor (starting current equal to 6 times full load current).

The vertical line labelled as "Inherent capability" on the Dead Load Pickup curve is not applicable for the Dresden Diesel Generators because they have a boost system associated with the exciter. Per Reference 40 of this calculation, Graph #SC-5056 is applicable for Dresden Diesel Generators.

D. Speed Torque Current Curve (297HA945-2) for Core Spray Pump by GE (Reference 14).E. Speed Torque Current Curve (#257HA264) for LPCI Pump by GE (Reference 15).F. Dresden Re-baselined Updated FSAR Table 8.3-3, DG loading due to loss of offsite ac power (Reference 30)G. Table 1: Automatically ON and OFF devices during LOOP Concurrent with LOCA when the DG 3 is powering the Unit 3 Division II loads (Attachment A)H. Table 2: Affects of Voltage Dip on the Control Circuits during the Start of Each Large Motor when DG 3 is powering Unit 3, Division II loads (Attachment B).Table 4: KW/KVAR/ KVA loading tables-for total and individual starting load at each step when DG 3 is powering Unit 3, Division II loads (Attachment C).J. CECO letter dated March 11, 1988 from Bruce B. Palagi to W. Fancher / M. Reed regarding the post LOCA ECCS Equipment requirements for the Dresden and Quad Cities Station (Reference 4, Page R1).K. Dresden Re-baselined Updated FSAR Figure 8.3-6, DG loading under accident and during loss of offsite ac power (Reference 31).L. Dresden Appendix R Table 3.1-1, DG loading for safe shutdown (Reference 32).

CALCULATION PAGE CALC NO. 9389-46-19-1 REVISION 003 PAGE NO. 4.0-6 Input Data (cont'd)N. Flow Chart No. 1, showing the source of data and establishing which load is ON when the DG is powering the safety buses during LOOP concurrent with LOCA (Attachment H)0. ETAP Loadflow summary for comparing loading and calculated KVA input of running loads at each step to DG capacity for Unit 3 (Attachments F & G).P. S&L Standard ESA-102, Revision 04-14-93 -Electrical and Physical Characteristics of Class B Electrical Cables (Reference 11)Q. S&L Standard ESC-165, Revision 11-03-92 -Power Plant Auxiliary Power System Design (Reference 41)R. S&L Standard ESI-167, Revision 4-16-84, Instruction for Computer Programs (Reference 1)S. S&L Standard ESC-193, Revision 9-2-86, Page 5 for Determining Motor Starting Power Factor (Reference 39)T. S&L Standard ESA-104a, Revision 1-5-87, Current carrying Capabilities of copper Cables (Reference 10)U. S&L Standard ESC-307, Revision 1-2-64, for checking voltage drop in starting AC motors (Reference 21)V. S&L Standard ESI-253, Revision 12-6-91 Electrical Department instruction for preparation, review, and approval of electrical design calculations (Reference 20)W. Unit 3 ETAP file from Calculation DRE04-0019, Rev. 000 and 000B (Reference 55). See Section 2.0 R3 for latest ETAP file.X. 125Vdc and 250Vdc Battery Charger, and 25OVdc UPS Models from Calculation 9189-18-19-4 used in ETAP (Reference 25 & 34)Y. Single Line diagram showing the breaker position when the DG output breaker closes to 4-kV Bus 34-1 during LOOP concurrent with LOCA (Attachment D)Z. Walkdown data for CCSW Pumps (Ref 26)AA. S&L Calculation 9198-18-19-4, Rev. 0 provides Reactor Protection M-G set brake horsepower. (Ref 34)AB. The maximum allowable time to start each LPCI Pump and Core Spray Pump is 5 seconds (Ref. 56)

CALCULATION PAGE CALC NO. 9389-46-19-1 REVISION 003 PAGE NO. 4.0-7(r...)

AC. The BHP values for the CS, LPCI and CCSW pumps after 10 minutes into a LOCA event are provided below (Ref. 64, 65, 66).Core Spray Pump 3B 881.9 hp LPCI Pump 3C 640.7 hp LPCI Pump 3D 609.0 hp CCSW Pump 3C 575.0 hp with 1 pump running, 465 hp with both pumps running CCSW Pump 3D 575.0 hp with 1 pump running, 465 hp with both pumps running AD. The 3 EDG Cooling Water Pump has a BHP of 69.28kW with a power factor of 83.5. The efficiency, LRC and starting power factor are 100%, 400% and 31.5% respectively (Ref. 67 & 68) R3 AE. The RPS MG Sets have a BHP of 3.9kW when unloaded with a power factor of 12.2%. This is based on a 5% tolerance in the data acquisition equipment (Ref. 69)AF. The HPCI Aux Coolant Pump is manually controlled and not operated during a LOCA (Ref. 70)AG. Dresden Technical Specification Section 3.8.1.16 allows a +2% tolerance on the nominal 60HZ EDG frequency (Ref. 73)AH. The continuous rating of the EDG is 2600kW at a 0.8 pf (Ref. 74)Al. For centrifugal pumps, the break horsepower varies as the cube of the speed (Ref. 75)

CALCULATION PAGE CALC NO. 9389-46-19-1 REVISION 003 PAGE NO. 5.0-11._i_

V ASSUMPTIONS

1) MCC control transformers (approximately 15OVA -200VA each) generally have only a small portion of their rating as actual load and can be neglected.

2) The Diesel Fuel Oil Transfer Pump is shown in this calculation as operating as soon as voltage is available on the MCC bus, but this is not the actual case as the pump responds to low day tank level which is normally full prior to DG starting.

This is conservative and compensates for Assumption 1.3) Individual load on buses downstream of 480/120V transformer have not been discretely analyzed to determine transformer loading. This transformer load on the 480V bus is assumed to be the rating of the distribution transformer or an equivalent three-phase loading for single phase transformers, which is conservative.

4) When Locked Rotor Currents are not available, it is considered 6.25 times the full load current.This is from S&L Standard ESC-165 and is reasonable and conservative.

5) For large motors (>250HP), the starting power factor is considered to be 20%. This is typical for large HP motors and does not require verification.

6) The line break will occur on Reactor Recirc Line B. This will result in the highest load and subsequently lower voltage at MCC 38-7. Although MCC voltages are not evaluated by this calculation, it will allow potential use of this calculation s input to future evaluation.

This is conservative and does not require further evaluation.

7) The load on the diesel generator is assumed to increase by 6% when the frequency of the machine is 2% above its nominal value. A majority of the load consists of large centrifugal pumps. The break horsepower of these pumps varies as the cube of the speed. Thus, a 2% increase in speed R3 corresponds to a 6% increase in load (1.023) (Ref. 75). Note that these pumps will operate on a different point on the performance curve and the BHP may actually increase less than 6%.8) For determining starting time for the large motors, the starting current is assumed to be constant throughout the evaluation.

Although the speed torque curve shows a decrease in current with speed as is expected, using a constant current will simplify the starting time evaluation.

Motor starting time would be somewhat less if the speed-current characteristics were included.

This assumption of pump motor starting current is conservative and requires no further verification.

The above assumptions 1, 2, 3, 4, 5, 6, 7 and 8 do not require verification.

Calculation For Diesel Generator 3 Loading Under Calc. No. 9389-46-19-1 SARGENT& LUNDY Design Bases Accident Condition Rev. Date X Safety-Related Non-Safety-Related Page ..0 -1 of Client CornEd Prepared by Date Project Dresden Station Unit 3 Reviewed by .Dates Proj. No. 9389-46 Equip. No. Approved by Date VI. ENGINEERING JUDGEMENT 1.) Based on engineering judgement an efficiency of 90% is to be used to convert the cumulative HP to an equivalent KW for Table 8.3-3 of the Dresden Re-baselined Updated FSAR, Revision 0. This is considered conservative because the majority of this load consists of 2-4kV motors. Also, this result is only to be used for a comparison.

2.) For the purposes of this calculation, a LOCA is defined as a large line break event.This is a bounding case, as in this event, the large AC powered ECCS-related loads will be required to operate in the first minutes of the event. In small and intermediate line break scenarios, there will be more time between the LOCA event initiation and the low pressure (i.e. AC) ECCS system initiation.

3) It is acknowledged that system parameters (i.e. low level, high pressure, etc. ) for different ECCS and PCIS functions have distinctly different setpoints.

For the purposes of this calculation, it will be assumed that these setpoints will have been reached prior to the EDG output breaker closure except as otherwise noted. This is conservative as it will result in the greatest amount of coincidental loading at time t=0-and time t=0+.4) Based on the fact that large motors will cause larger voltage dips when started on the Diesel Generator, the manually initiated loads starting at t=10+ minutes will be assumed started as follows: a) CCSW Pump 0 b) CCSW Pump C-J CALCULATION PAGE CALC NO. 9389-46-19-1 REVISION 003 PAGE NO. 7.0-1 (t%.j)VII ACCEPTANCE CRITERIA The following are used for the acceptance criteria: 1) Continuous loading of the Diesel Generator.

The total running load of the DG must not exceed its peak rating of 3575kVA @ 0.8 pf (Ref.24) or 2860 KW for 2000 hr/yr operation.

Note: The load refinements performed under Revision 003 of this calculation showed that the running load is within the 2600 KW continuous rating of the DG. Should a future calculation revision show that the loading is greater than the 2600KW continuous rating; a 50.59 safety evaluation should be performed to assess the impact on the current Dresden design/licensing basis, The total running load of the DG must not exceed its nameplate rating of 3575 KVA @ 0.8 pf (Ref. 24) or 2860 kW for 2000 hr/yr operation when considering the maximum frequency tolerance.

If the EDG is at 102% of its nominal frequency, the EDG load is expected to be 1,023 or 1.06 times larger since a centrifugal pump input BHP varies as the cube of the speed (Ref. 75) R3 EDG Power Factor during Time Sequence Steps DG3_T=10+m, DG3 T=10++m, and DG3_T=CRHVAC must be >88% (Ref. 76 and 77)Note: Should a future calculation revision show that the criterion for reactive power during the above noted DG time sequence steps can no longer be met; a review should be performed to assess the impact on the current Dresden design/licensing basis.2) Transient loading of the Diesel Generator.

Voltage recovery after 1 second following each start must be greater than or equal to 80% of the DG bus rated voltage (Ref. 12). This 80% voltage assures motor acceleration.

The transient voltage dip will not cause any significant adverse affects on control circuits.The transient voltage dip will not cause any protective device to inadvertently actuate or dropout as appropriate.

The transient voltage dip will not cause the travel time of any MOV to be longer than allowable.

The starting durations of the automatically starting 4kV pump motors are less than or equal to the following times (see Section IV.AB): oService S Powable-Starting Time (sec.)LPCl Pump 3C 5 LPCl Pump 30 5 Core Spray Pump 38 5 Calculation For Diesel Generator 3 Loading Under CaIc. No. 9389-46-19-1 ISARGENT&

LUNDY i Design Bases Accident Condition Rev. I ate ENGMEERS U f~X Safety-Related Nojaft-Related

~ ,0I Of Clent CornEd Prepared by Date Project Dresden Station Unit 3 Reviewed by ......Date.Proj. No. 9389-46 Equip. No. Approved by Date VIII. LOAD SEQUENCING OPERATION A. Load Sequencing During LOOPILOCA By reviewing the Table 1 schematic drawings, it was determined that there are three automatic load starting steps, which start the two LPCI Pumps sequentially, followed by the Core Spray Pump. Also, there is another inherent step which delays the large pumps from starting by 3 seconds. This delay is due to the undervoltage relay recovery time, which is interlocked with the start time for the large pumps.This calculation considers that all the devices auto start from an initiating signal (pressure, level, etc.) or from a common relay start at the same time (unless a timer is in the circuit).

It considers all devices are in normal position as shown on the P&ID.It was found from discussion with CoinEd Tech. Staff and the Control Room Operators that valves always remain in the position as shown on the design document.For long term cooling, manual operation is required to start 2 Containment Cooling Service Water pumps and associated auxiliaries.

1) Automatic Initiation of DG during LOOP concurrent with LOCA The DG will automatically start with any one of the signals below:* 2 psig drywell pressure, or 0 -59" Reactor water level, or* Primary Under voltage on Bus 34-1, or* Breaker from Bus 34 to Bus 34-1 opens, or* Backup undervoltage on Bus 34-1 with a 7 second time delay under LOCA 0 Backup undervoltage on Bus 34-1 with a 5 minutes time delay without a LOCA Upon loss of all normal power sources, DG starts automatically and is ready for loading within 10 seconds (Reference 7, page 8.3-14). When the safety-related 4160V bus is de-energized, the DG automatically starts and the DG output breaker closes to energize the bus when the DG voltage and frequency are above the minimum required.

Closure of the output breaker, interlocks ECCS loads from automatically reclosing to the emergency bus, and then the loads are started sequentially with their timers. This prevents overloading of the DG during the auto-starting sequence.

CALCULATION PAGE CALC NO. 9389-46-19-1 REVISION 002 PAGE NO. 8.0-2 LOAD SEQUENCING OPERATION (cont'd)2) Automatic Load Sequence Operation for LOOP with LOCA* When the DG automatically starts and its output breaker closes to Switchgear 34-1, the diesel auxiliaries and certain MOVs start operating, and the UV relay (IAV 69B)starts its reset recovery timing.* As soon as UV relay (IAV 69B) completes its reset, the first LPCI pump starts.* 5 seconds after UV relay (IAV 69B) reset, the second LPCI pump starts. At the same time, associated valves and equipment with the LPCI pump start operating.

• 10 seconds after the UV relay (IAV 69B) reset, the Core Spray pump starts. At the same time, associated valves and equipment with the Core Spray pump start operating.

Automatically activated loads on the DG during LOOP concurrent with LOCA are identified in Table 1.3) Manual actuation required for long term cooling After 10 minutes of continued automatic operation of the LPCI Pumps and Core Spray system, the operator has to do the following actions to initiate long term cooling (see References 33 and 63):# Appropriate loads on Bus 34 will be shed and locked out. R2 0 At this point the operator can manually close the breaker to the switchgear bus and start one of the CC Service Water pumps, and also opens the CC Heat Exchanger Service Water Discharge Valve.0 Turn off one of the LPCI pumps R2* After the first CCSW Pump is started and one of the LPCI pumps is shut off, the operator will start the second CCSW Pump and associated equipment (e.g. cooler fans).

Calculation For Diesel Generator 3 Loading Under Calc. No. 9389-46-19.1 NT & Y Design Bases Accident Condition Rev. I ato II X Safety-Related r Non-Safety-Related Page g'. 0 3 of Client CornEd Prepared by Date Project Dresden Station Unit 3 Reviewed by Date Proj. No. 9389-46 Equip. No. Approved by Date B. Description of sequencing for various major systems with large loads 1) LPCIICC -LPCI Mode LPCI/CC To prevent a failure of fuel cladding as a result of various postulated LOCAs for line break sizes ranging from those for which the core is adequately cooled by HPCI system alone, up to and including a DBA (Reference 6).LPCI Mode The LPCI mode of the LPCI/CC is to restore and maintain the water level in the reactor vessel to at least two-thirds of core height after a LOCA (Ref. 6).i) Initiation of LPCI occurs at low-low water level (-59"), and low reactor pressure (<350 psig), or high drywell pressure (+2 psig). For the purposes of this calculation, it is assumed that LPCI loop selection and the <350 psig interlocks have occurred prior to DG Output breaker closure.0 CC Service Water pumps are tripped and interlocked off.* The Heat Exchanger Bypass Valve 1501-11B receives an open signal and is interlocked open for 30 seconds and then remains open. Note: these valves will be required to close to obtain flow throughout LPCI Heat Exchanger;, See Section VIII.B.3.iii.

• LPCI pump suction valves (1501-5C and 5D) -To prevent main system pump damage caused by overheating with no flow, these valves are normally open and remain open upon system initiation.

• Containment Cooling valves 1501-18B, 19B, 20B, 27B, 28B, and 38B are interlocked closed.0 With time delay, the Low Level/High Drywell Pressure signal closes the Recirculation Pump Discharge Valve 202-5A and 1501-22B, opens 1501-21A.* LPCI Pump 3C will start immediately after UV relay resets.0 LPCI Pump 3D will start 5 seconds after UV relay resets.

Calculation For Diesel Generator 3 Loading Under I SARGENT& LUNDY Design Bases Accident Condition Rev.TDate U X Safety-Related ,Non-Safety-Related Page ,0- 4 of Client CorEd Prepared by Date Project Dresden Station Unit 3 Reviewed by Date Proj. No. 9389-46 Equip. No. Approved by Date S LPCI pumps minimum bypass valve (1501-13B)

-To prevent the LPCI pumps from overheating at low flow rates, a minimum flow bypass line, which routes water from pump discharge to the suppression chamber is provided for each pump. A single valve for both LPCI pumps controls the minimum flow bypass line. The valve opens automatically upon sensing low flow in the discharge lines from the pump. The valve also auto-closes when flow is above the low flow setting.2) Core Spray The function of the Core Spray system is to provide the core with cooling water spray to maintain sufficient core cooling on a LOCA or other condition which causes low reactor water, enough to potentially uncover the core.i) The core spray pump starts automatically on any of the following signal: 0 High Drywell Pressure (2 psig) or,* Low -Low reactor water level (-59") and low reactor pressure (<350 psig), or 0 Low-Low reactor water level (-59") for 8.5 minutes.ii) The following valves respond to initiation of core spray:* Minimum Flow Bypass Valve 1402-38B -This valve is a N.O. valve which remains open to allow enough flow to be recirculated to the torus to prevent overheating of core spray pump when pumping against a closed discharge valve. When sufficient flow is sensed, it will close automatically

• Outboard Injection Valve 1402-24B -This valve is normally open and interlocks open automatically when reactor pressure is less than 350 psig." Inboard Injection Valve 1402-25B -This valve is normally closed, but will open automatically when reactor pressure is less than 350 psig.* Test Bypass Valve 1402-48 -This is a normally closed valve and interlocks closed with Core Spray initiation.

• Core Spray Pump Suction Valve 1402-3B -This is a normally open valve and interlocks open with the initiation of Core Spray.

CALCULATION PAGE CALC NO. 9389-46-19-1 REVISION 002 PAGE NO. 8.0-5.3) CC Service Water (CCSW) Pump The CC Service Water pumps provide river water at a pressure of 20 psig over the LPCI water pressure for removing the heat from the LPCI heat exchanger.

One CC Service Water pump is sized to assure sufficient cooling in the secondary cooling loop of the CC heat exchanger for LPCI operation, even though there are two CC Service Water pumps per heat exchanger.

The pump flow required is 3500 gpm. Each CCSW pump has the flow rate of 3500gpm, so at this rate, one pump is enough for adequate cooling. However, the Dresden Station was licensed on the basis both CC Service Water pumps would be operating.

i) The CCSW pump trips when it senses UV, overcurrent, or a LPCI initiation signal on Bus 34 and will not auto start when the proper voltage is back on Bus 34.ii) According to Dresden FSAR Section 8, Table 8.2.5 two CC Service Water pumps are required during LOOP concurrent with LOCA. After 10 minutes of running both LPCI pumps and the Core Spray pump, the operator manually turns on the CCSW pumps, but is required j R2 for DG loading capacity to turn off one of the LPCI pumps [e.g. pump 3D for this calculation) before the second CCSW pump is turned on (see References 33 and 63). Dresden Updated J R2 FSAR section 5.2.3.3 analyzed the recovery portion of LOCA for the equipment availability and concluded that one LPCl, one Core Spray, and two CCSW pump is adequate for recovery beyond 10 minutes after LOCA.iii) After the CC Service Water Pumps are turned on, the CC Heat Exchanger Service Water Discharge Control Valve 1501-3A opens to provide CCSW flow through the CC heat exchanger.

The operator at some time during the event will close the CC 3B Heat Exchanger Bypass Valve 1501-118 to establish LPCI flow through the heat exchanger.

As this is a manual initiation of an intermittent load, this valve operation is not considered in this calculation.

4) Standby Gas Treatment (SBGT)The purpose of the SBGT system is to maintain a small negative pressure in the reactor building to prevent ground level release of airborne radioactivity.

The system also treats the affluent from the reactor building and discharges the treated affluent through a 310 foot chimney in order to minimize the release of radioactive material to the environment.

Calculation For Diesel Generator 3 Loading Under CaIc. No. 9389-46-19-1 SARGENT& LUNDY Design Bases Accident Condition Rev Date I X Safety-Related INon-Safety-Related 8page .0-6 of FMAi.ClIent CornEd Prepared by .Date Project Dresden Station Unit 3 Reviewed by Date Proj. No. 9389-46 Equip. No. Approved by .Date The SBGT system will auto initiate on the following conditions:

1) B train in Primary, A train in Standby a. High radiation in Reactor Building Vent System (4mr/hr)b. High radiation on refuel floor (100mr/hr)

c. High drywell pressure (+2 psig)d. Low Reactor water level (+8 inches)e. High radiation inside the drywell (102 x R/hr)2) A train in Primary, B train in Standby If the B train of SBGT system is in standby, a timer is enabled which will initiate the B train of SBGT if a low flow is present on A train SBGT for longer than the allowed time. Per DIS7500-01, this time is set to operate within 18 to 22 seconds Since the Case 2 scenario is after the Core Spray Pump start and before t=10-minutes, B train SBGT will be shown to operate as described in Case I above.Upon initiation, the SBGT trips the normal Reactor Building vent supply and exhaust fans, and closes AO valves. It also trips the drywell and torus purge fans.Motor Operated Inlet Butterfly Valve 7503 (N.O.) remains open. The electric heater raises the air temperature sufficiently to lower the relative humidity.

Motor operated Butterfly Valve 7505B is normally closed and interlocked open upon system initiation.

Motor Operated Butterfly Valve 7507B is normally closed and interlocked open. Motor operated valve 7504B is normally open and is interlocked closed on system initiation.

SBGT Fan 2/3-7506 will drive the filtered air out through the ventilating chimney.

CALCULATION PAGE CALC NO. 9389-46-19-1 REVISION 003 PAGE NO. 9.0-1 IX METHODOLOGY A. Loading Scenarios:

There are three different abnormal conditions on which the Emergency Diesel Generator can be operating:

1) Loss of AC Offsite Power (LOOP)2) Safe Shutdown Due to Fire 3) LOOP concurrent with LOCA The above scenarios will be compared for total loading and heaviest sequential loading to determine worst case scenario and why the scenario was chosen.B. Continuous Loading Evaluation The following Attachments are used to determine and develop the continuous loading of the DG:* Table 1" ETAP for the load summary of the loading of the DG at selected steps of automatically and manually started loads (Attachments F & G).The loading based on the maximum loading scenario, including cumulative proposed modifications to the loading, will be tracked in the ETAP data file. In all of the cases that will be analyzed, the proposed loading will be greater than that of the existing loading, since all modified load reductions will remain at previous loads until installed and changed to existing.

Thus the capability of the DG to pickup the modified loading and operate within the safe operating limit of the DG will envelope the existing loading.For all of the various steps in the DG load profile, the ETAP total load will be the summation of the steady state load of all running and starting services for the starting step being analyzed.The ETAP model was revised to mimic the ELMS-AC data files that were part of the calculation prior to Revision 002. Scenarios were created in ETAP to model the various loading steps in the DG load profile as loads are energized and de-energized.

The scenarios used to model the DG loading in ETAP are listed in the table that follows. The scenarios use one of three loading categories named "DG Ld 0 CCSW", DG Ld 1 CCSW" and "DG R3 Ld 2 CCSW". These loading categories were created by duplicating loading category "Condition 3". In cases where a load was identified in loading category "Condition 3" as zero and the load is energized during the diesel loading scenario, the loads were modeled as 100% in these loading I categories.

If the bhp for a given load in the previous DG data files was different than that in load R3 condition 3, it was revised to match the bhp value in the previous ELMS-AC data files for this calculation.

Breakers were added for various loads that change state as part of the DG load profile. No specific breaker data was entered as these breakers are only used as switches.

The breakers were opened and closed as required creating configurations which duplicate the loading on the DG for each load step previously captured in the ELMS-AC program. The three loading categories are identical except the BHP values associated with the CS, LPCI and CCSW pumps are varied. "DG Ld 0 CCSW" represents the first 10 minutes of the accident where no CCSW R3 pumps are operating. "DG Ld 1 CCSW" reflects reduced CS and LPCI loading values after 10 minutes and a 115% bhp loading value for a single CCSW pump in operation. "DG Ld 2 CCSW" is the same as "DG Ld 1 CCSW" except CCSW bhp values are reduced to reflect operation of both pumps.

CALCULATION PAGE CALC NO. 9389-46-19-1 REVISION 003 PAGE NO. 9.0-2 Four study cases were created for use with this calculation:

DG_0_CCSW, DG_1_CCSW, DG_2_CCSW and DGVreduced.

The first three study cases use the corresponding similarly named loading category and the DGVreduced case uses the DG_0_CCSW loading category as all runs correspond to less than 10 minutes into the event. The generating category was set to R3"Nominal" and "Gen Min" for the first three study cases and DGVredUced study case respectively.

The Unit 3 diesel voltage was set to 100% and 60% for the "Nominal" and 'Gen Min" generation categories respectively.

60% was chosen as it envelopes the lowest expected DG terminal voltage. This value is supported by the calculations performed in Section 10. In each of these study cases, the Newton Raphson method of load flow was selected with the maximum number of iterations set at 99 and the precision set to 0.000001.

Only the initial bus voltages were chosen to be updated as a result of execution of the load flow. No diversity factors or global tolerances were used.The scenario wizard in ETAP was used to set up the configuration, study case, and output report for each time step in the DG load profile. The study wizard was used to group and run all of the scenarios.

Each scenario was run three times in a row as part of each study macro. The results can vary depending upon the order that the study cases are run as certain calculations within ETAP are run using the initial bus voltages in the bus editor. The multiple runs assure a unique solution is reached regardless of the bus voltages in the bus editors prior to each load flow run.The precision for each study case is not accurate enough to guarantee a unique solution.

The scenarios used to calculate the loading on the DG during each time step are listed below along with the relevant ETAP settings, configurations, etc.I.

CALCULATION PAGE CALC NO.9389-46-19-1 REVISION 003 PAGE NO. 9.0-3 METHODOLOGY (cont'd)DG Scenario Configuration Study Case Voltage Output Report Study Macro Description DG3_BkrCl DG3 Bkr CI DG0_CCSW 4160V DG33.BkrClose DG3 Vnormal Initial loading on DG due to 480V loads when DG breaker closes DG3_UV Reset DG3 UVReset DG_0_CCSW 4160V DG3 UVReset DG3_Vnormal Scenario DG3 Bkr Cl plus 1" LPCI pump and auxiliaries DG3 T=5sec DG3.T=5sec DG0 CCSW 4160V DG3_T=5sec DG3_Vnormal Scenario DG3 UV Reset plus 2rd LPCI pump DG3_T=10sec DG3T=10sec DG_0CCSW 4160V DG3_T=10sec DG3_Vnormal Scenario DG3 T=5sec plus Core Spray Pump and Auxiliaries DG3.T=10-mmn DG3_T=10-m DGO0CCSW 4160V DG3 T=10-min DG3.Vnormal Scenario DG3T=10sec minus MOV that have completed stroke DG3_T=10+min OG3_T=10+m DG_1_CCSW 4160V D03_T=i0+min DG3_Vnormal Scenario DG3 T=10-min plus 15, CCSW pump and Auxiliaries DG3_T=10++min DG3_T=10++m DG_2_CCSW 4160V DG3T=10++min DG3 Vnormn Scenario DG3 T=10+min plus 2e CCSVW pump and Auxiliaries minus 1 LPCI pump.DG3_CRHVAC DG3_CRHVAC DG_2_CCSW 4160V 0G3 CR-HVAC DG3Vnormal Scenario DG3 T=10++min plus Control Room HVAC and adl other long term loads.DG3_BkrVlow DG3 Bkr CI DGVreduced 2496V DG33Bkr Vred DG3_Vreduced Scenario OG3 BkrCl run at lowest expected voltage DG3 UV Vlow OG3 UV Reset DGVreduced 2496V DG3 UV Vred D03_Vreduced Scenario DG3 UV Reset run at lowest expected voltage DG3 T=5sViow DG3_T=5sec DG.Vreduced 2496V DG3_T=5sVred DG3Vreduced Scenario DG3 T=Ssec run at lowest expected voltage DG3 T=10-mVI DG33T=10-m DGO Vreduced 2496V DG3_T=10-mVred DG3_Vreduced Scenario DG3 T=10-min run at lowest expected voltage R3 CALCULATION PAGE CALC NO. 9389-46-19-1 REVISION 002 PAGE NO. 9.0-4 METHODOLOGY (cont'd)No other manual loads outside the Dresden Re-baselined Updated FSAR (Revision

0) scope were considered for this analysis.C. Transient Loading Evaluation.

The following attachments are used to determine and develop the transient loading of the DG: 0 Table 1 0 Table 4* Flow Chart 1* Use of Dead Load Pickup Curve.The following formulas will be used to determine the starting KVA on the DG at each step from the motor data provided and the ETAP reduced voltage scenarios.

JR2 Calculating starting KVA (SKVAR) at the machine's rated voltage (VR)SKVAR = 43 VR ILRC where, ILRC is the machine's Locked Rotor Current Calculating starting KVA (SKVA) at the machine's rated voltage (Vz)SKVA @ V 2 = (V 2)2 / (VR)2 X SKVAR The starting kW/kVAR for the starting loads in each step will be calculated and tabulated separately in Table 4.The reduced voltage ETAP files are run for each timeframe immediately preceeding a large motor start with the exception of the last CCSW pump which is bounded by a start of the 1" CCSW pump. R2 The 1 " CCSW pump was modeled as starting concurrent with the aux loads energized concurrently with the 2d CCSW pump in order to create a bounding case for a CCSW pump start. The reduced DG terminal voltage is equal to or lower than the voltage dip during the most severe starting step.The reduced terminal voltage will be used to determine an incremental increase in current caused by the running loads operating at lower than rated voltage.

CALCULATION PAGE CALC NO. 9389-46-19-1 REVISION 003 PAGE NO. 9.0-5 METHODOLOGY (cont'd)The difference in current will be reflected as the equivalent kw/kvar at full voltage (at the power factor of the running loads) and added to the total starting kw/kvar of the starting loads to determine the net starting KVA.The power factor of the running loads is taken from ETAP.Calculating the incremental KVA for previously running loads is done as follows: lcurr@100%

= Taken from ETAP output report from study cases run at nominal voltage f R3 Icun-ra, voltage = Taken from ETAP output report from DGVreduced study cases Al = ICuro@remuced voltage -lCurr@100%

AKVA = Al x 43 x 4.16KV Conservatively, the worst voltage drop case due to the presence of running load will be applied to all large motor starting cases. The previous calculation revisions show that the largest voltage dip occurs when the Core Spray Pump starts. Revision 10 of Calculation 7317-33-19-1 shows that the voltage dip is 62.2% of bus rated voltage for Unit 3 when the first LPCI Pump is starting.

For conservatism, 60.0% (i.e. 2496V) of bus rated voltage will be used for all running load conditions.

The voltage dip and one second recovery at the DG for the initial start at breaker closing is determined from the EMD's Dead Load Pickup Curve #SSC-5056 (Ref. 13) by using the total starting KVA value from Table 4. Following the initial start, the total KVA is determined by vectorially adding the step starting load KW/KVAR from Table 4, the AKVA changed to KW/KVAR of the running load of the previous scenario in the ETAP file, and the starting KW/KVAR of the 4000V motor that is starting to determine the total starting KVA, which is then used to determine the voltage dip and one second recovery at the DG terminals.

The Dead Load Pickup Curve provides initial voltage dip and recovery after I second following a start based on the DG transient starting load. The curve includes the combined effect of the exciter and the governor in order to provide recovery voltages.

The voltage dip and recovery analysis utilizes the results of dynamic DG characteristics reflected in the manufacturer's curve.Though the Calculation For Diesel Generator 3 Loading Under Calc. No. 9389-46-19-1

&SARGENT &LUNDY Design Bases Accident Condition Rev.ENNESUIX ISafety-Related 1 Non-Safety-Related Page 4,0- 4 of Client ComEd Prepared by Date Project Dresden Station Unit 3 Reviewed by Date Proj. No. 9389-46 Equip. No. Approved by Date METHODOLOGY (Cont'd)curve shows voltage recovery up to 1 second, the voltage will continue to improve after 1 second due to exciter and governor operation.

The DG Strip Chart for the surveillance test (Ref. 23) shows the voltage improvement past 1 second.To determine motor starting terminal voltage, the cable voltage drop is calculated using the locked rotor current at rated voltage. This is conservative since the locked rotor current is directly proportional to applied voltage.D. Analysis of control circuits during motor starting transient voltage dip.When the DG starts a large motor, the momentary voltage dip can be below 70%of generator rated voltage. There is a concern whether momentary low voltage could cause certain control circuits to drop-out.

Table 2 of this calculation analyzes the effect of an ac momentary voltage dip on the operation of the mechanical equipment.

This table analyzes the momentary voltage dip at 5 seconds & 10 seconds after UV reset; and 10 minutes and after for its effect on the operation of mechanical equipment.

E. Protective device evaluation and MOV operating time effects during motor starting transient voltage dip The voltage recovery after one second will be evaluated for net effect on the protective devices The duration of starting current is expected to be shorter than operation from offsite power source because of better DG voltage recovery.Because protective devices are set to allow adequate starting time at motor rated voltage and during operation from offsite power, protective device operation due to overcurrent or longer operating time is not expected to be a concern when operating from the DG power during LOOP concurrent with LOCA. The voltage and frequency protection of MCCs 39-7/38-7 has been studied in S&L calculation 8231-03-19-1 (Ref. 44).F. Methodology for Determining Starting Time of Large Motors. (Ref. 42)To determine large motor starting times, the time needed for the motor to accelerate through an increment of motor speed will be found. This will be accomplished by determining from motor and load speed-torque curves net accelerating torque (i.e. the difference between the torque produced by the motor and the torque required by the load) for each increment of speed. Using the combined motor and load inertia, the time needed to accelerate through the increment of speed can be calculated.

All the time intervals will be summed to Calculation For Diesel Generator 3 Loading Under Calc. No. 9389-46-19-1 S rG & LUNDY Design Bases Accident Condition j Rev. IDate X [Safety-Related I "Non-Safety-Related Page 1,0-7 of FINAL[Client CornEd Prepared by Date[Project Dresden Station Unit 3 Reviewed by Date Proj. No. 9389-46 Equip. No. Approved by Date obtain a total motor starting time. Since motor torque is directly proportional to the square of applied terminal voltage, values obtained from the 100% rated voltage speed-torque curve will be adjusted downward for lower than rated applied terminal voltage. And, since this calculation determines for each motor start an initial voltage and a recovery voltage after 1 second, these two values will be used when adjusting motor torque for applied terminal voltage (i.e. For the initial speed increment and all subsequent increments occurring I second or less from the beginning of the motor start period, the initial voltage value will be used to determine motor torque. All later increments will use the 1 second recovery voltage value.) The time for each speed increment will be found using the following process: 1) At each speed increment, the motor torque will be found at the initial or 1 second recovery motor terminal voltage, as appropriate this will be done using the equation: T = [(Vterrn)2 / (Vrated)2] x Motor Base Torque x 100% Voltage Motor Torque from speed-torque curve 2) At each speed increment, load torque will be obtained from the load speed-torque curve.3) The torque of the load is subtracted from the determined motor torque to obtain the net accelerating torque.4) Finally the time fo accelerate through an RPM increment is found using the following equation: t = [WK2(pump

+ motor) x RPM increment]

/ (307.5 x Net Accelerating Torque)5) All the time increments are summed to obtain the total motor starting time.

CALCULATION PAGE CALC NO. 9389-46-19-1 REVISION 003 PAGE NO. 10.0-1 X CALCULATIONS AND RESULTS The following set of Calculations and Results are for the condition when DG 3 is powering the Unit 3 buses.A. Loading Scenarios:

Dresden Re-baselined Updated FSAR, Rev. 0, loading table 8.3-3 shows that the maximum DG 3 loading during LOOP is only 1552 kW.Dresden Station Fire Protection Reports -Safe Shutdown Report dated July 1993, Table 3.1-1, shows that the maximum loading on DG 3 is 1541 kW, which is adequate for Dresden Station Also, the Dresden Re-baselined Updated FSAR, Rev. 0, Figure 8.3-7 shows that the maximum loading on DG 3 during LOOP concurrent with LOCA is 2260 kW By comparing all three conditions, it is concluded that the combination of LOOP concurrent with LOCA is the worst case of DG loading. Therefore, LOOP concurrent with LOCA scenario was analyzed in detail in this calculation.

The load values for the three conditions stated above are historical values and are used only for comparison of load magnitudes to determine the worst-case loading scenario for the Diesel Generator.

For currently predicted loading values on the diesel generator, see Section XI, Subsection A, "Continuous Loading of the Diesel Generator.

B. Continuous Loading Table 1 was developed to show loads powered by the DG and the loads that will be automatically activated when the DG output breaker closes to 4-kV Bus 34-1 following LOOP concurrent with LOCA. The ETAP model was then set up using the "DG Ld 0 CCSW", DG Ld 1 R3 CCSW" and DG Ld 2 CCSW" loading categories and the various configurations to model the loads as described in the methodology section. The CCSW Pumps are manually started and a LPCI Pump is turned off to stay within the DG capacity.Also, for conservatism the Diesel Fuel Oil Transfer Pumps are shown as operating from 0 seconds, even though these pumps will not operate for the first few hours because the Day Tank has fuel supply for approximately four hours.C. DG Terminal Voltages under Different Loading Steps Figure 2 Load vs Time profile of starting loads for the DG was developed from Table 1 showing loads operating at each different time sequence.

The values for the running loads in kW/kVAR/kVA were taken from the appropriate ETAP output report, and the starting values for 480V loads are calculated in Table 4. The following is a sample calculation for LPCI Pump 3C showing the determination of motor starting kVA and starting time. It is shown for demonstrative purposes only (based on Rev. 2). For actual starting and recovery voltages, see J R3 Section 10.1. This sample calculation is based on use of the ETAP program.

C.alculation For Diesel Generator 3 Loading Under&L WND-Client CornEd Project Dresden Station Unit 3 Design Bases Accident Condition Safety-Related I Non-Safety-Related Calc. No. 9389-46-19-1 Page 0,0-2 of Proj. No. 9389-46 Equip. No.Prepared by Date Reviewed by Date Approved by .Date CALCULATION AND RESULTS (Cont'd) For Demonstration Only 2) Starting of First LPCI Pump 3C (700HP)i) Starting KVA of LPCI Pump 3C Base voltage(motor rated voltage) 4000v (4.0KV)Operating voltage 4160v (4.16KV)Base current(FLC) 90A LRC 7 Times FLC Starting Power Factor (SPF%) 20%Calculating the starting KVA at base voltage SKVA 1 = V3 x 4.0KV x (90A x 7.00) = 4365 KVA Starting KVA @ Operating voltage = (4160V)2/(4000V)2 x 4365KVA= 4721KVA @20%PF The starting KVA is converted at starting power factor to the following KW and KVAR values: Starting KW = 4721 KVA x .20PF = 944.2KW Starting KVAR 4721KVA x (sin[cos1 0.20PF]) = 4625.6KVAR The initial voltage dip (Based on 4721 KVA) due to starting the LPCI pump is found from the Dead Load Pickup Curve #SC-5056 and multiplying by 0.97 to account for -3% curve tolerance is= (69.8% x 0.97) = 67.7% of 4160v ii) When the first LPCI Pump starts, LPCI/CS Pump Cooling Unit and LPCI Pump Flow Bypass Valve 3B operates.

The starting load is summarized in Table 4. The results are as follows: Starting auxiliary load = 23.1 + j30.1 Starting LPCI Pump 3C = 944.2 + j4625.6 Total Starting Load 967.3 + j 4655.7 Vector starting KVA = V[(967.3)2+ (4655.7)2]

= 4755.1 KVA CALCULATION PAGE CALC NO. 9389-46-19-1 REVISION 002 PAGE NO. 10.0-3 CALCULATIONS AND RESULTS (cont'd)The initial voltage dip (Based on 4755 KVA) due to starting the LPCI pump and auxiliaries from the Dead Load Pickup Curve #SC-5056 and multiplying by 0.97 to account for -3% curve tolerance is= (69.8% x 0.97) = 67.7% of 4160v iii) When first LPCI Pump starts, at that time there are running loads on DG powered buses.Therefore, the actual voltage drop on the bus is assumed to be more than the starting of the first LPCI Pump alone. The running KVA from ETAP supplied by the Unit 3 EDG is 507 KVA.The current at 100% voltage (i.e. at 4160 volts) from ETAP scenario DG3_BkrCl is I1,01% = 70.4 amps The kVAR & kW from ETAP scenario DG3_Bkr_Vlow at reduced voltage are 231 kVAR &414 kW.The power factor from the same ETAP scenario at the reduced voltage running load is R2 PF = 0.874 PF The current at the reduced voltage dip for this KVA load from ETAP is I,,dm,,, Av = 109.7 amps The incremental difference of current is Al = 109.7 amps -70.4 amps = 39.3 amps 1R2 The incremental KVA (AKVA) used to determine additional starting KVA is AKVA = 43 x 4.160 kV x 39.3 amps = 283.2 KVA R2 The incremental running load equivalent is converted to an equivalent kW/kVAR from the incremental KVA previously determined.

Incremental running load KW = 283.2 kVA x 0.874 PF = 247.49 kW R2 Incremental running load KVAR= 283.2 kVA x (sin[cos 1 0.874 PF]) = 137.60 kVAR CALCULATION PAGE CALC NO. 9389-46-19-1 REVISION 002 PAGE NO. 10.0-4 CALCULATIONS AND RESULTS (cont'd)iv) The starting KVA equivalent as seen by the DG is calculated as follows: Incremental running load equivalent 247.49 + j137.60 LPCI Pump 3C Starting load 944,2 + j4625.6 Concurrent Starting Auxiliary Load (from Table 4) 23.1 +301 R2 Total Starting KVA equivalent 1214.78 + j4793.25 Vector starting KVA = <[(1214.78)2

+ (4793.25)2]

= 4944.79 kVA From Dead Load Pickup Curve (SC-5056) the initial starting voltage and 1 second recovery voltage (Based on 4944.79 kVA) and multiplying by 0.97 to account for -3% curve tolerance Initial Voltage drop = ( 68.8% x 0.97) = 66.74% of 4160V R2 Voltage recovery after 1 second = ( 95.2% x 0.97) = 92.34% of 4160V v) The feed cable of LPCI Pump 3C is 3/C -#1/0 -5 kV, and the cable number is 30980.The length of the cable is 227 feet and this length is taken from ETAP. R2 The impedance of the cable (Ref. S&L Standard ESA-102) is: Zcb1e = 227 ft. x [(0.0128 + j0.00384 ohms)/100ft p.u. imp.]Zcble = 0.02906 + j0.00872 ohms R2 lZwt)Jl = q[(0.02906)2

+ (0.00872)2]

= 0.0303 ohms The maximum motor terminal line-to-line voltage drop which may occur on this cable where 630 amps is the LRC is: AVcable = N3 x 630 amps x 0.0303 ohm = 33.11 volts (0.80% of 4160V) I R2 Deducting the voltage drop due to motor feed cable to determine the actual voltage at the motor terminal, the initial starting voltage at the motor terminals is 66.74% -0.80% = 65.94% of 4160V fR2 The voltage after 1 second at the motor terminals is 92.34% -0.80% = 91.55% of 4160V J R2!

CALCULATION PAGE I CALC NO. 9389-46-19-1 REVISION 002 PAGE NO. 10.0-5 CALCULATIONS AND RESULTS (cont'd)D. Starting Time Calculations (FOR DEMONSTRATION ONLY)1) LPCI Pump 3C Initial (Starting)

Voltage (@ motor) 65.94% of 4160v = 2743.1 volts Voltage at 1 second (@ motor) 91.55% of 4160v = 3808.5 volts Motor Base Torque 1030 ft-lb WK2 Pump (wet) 18.1 lb-ft 2 WK2 Motor 190.0 lb-ft 2 Total WK2 208.1 lb-ft 2 Motor Torque at 2743.1 volts T = [(2743.1V) 2 / (4000V)2] x 1030 ft-lb x 100% voltage x Motor Torque from speed-torque curve= 484.4 x 100% voltage x Motor Torque from speed-torque curve Motor Torque at 3808.5 volts T = [(3808.5)2

/ (4000)2] x 1030 ft-lb x 100% voltage x Motor Torque from speed-torque curve= 933.7 x 100% voltage x Motor Torque from speed-torque curve 1R2 R2 R2 R2 CALCULATION PAGE CALC NO.9389-46-19-1 REVISION 002 PAGE NO. 10.0-6 I CALCULATIONS AND RESULTS (cont'd) (FOR DEMONSTRATION ONLY)% RPM RPM Voltage Motor Motor Pump Pump !Net Torque Time in Torque Torque Torque Torque lb-ft Seconds From lb-ft From lb -ft Curve Curve 10 360 65.94 0.80 387.52 0.0 0.00 387.52 0.63 10-20 360 165.94 I0.80 387.52 .0.02 j20.60 366,92 0.66 20-30 360 191.55 0.81 756.29 0.05 51,50 704.79 0.35 30-40 j 1 360 91.55 0.82 765.63 006 6180 703.83 035 40-50 1' 360 0.83I 774.96 0.100 671.96 0.36 50-60 1 360, 191.55 0.85 793.64 0.15 154.50 639.14 0.38 60-70 360 91.55 F 0.92 1859.00 0.19 195.70 663.30 0.37 70-80 , 360 91.55 1.07 999.05 0.25 257.50 741.55 0.33 80-90 360 91.55 1.50 1400.54 0.32 329.60 1070.94 0.23 90-95 180 91.55 2.20 2054.12 290.38 391.40 1662.72 0.07 95-99 1 144 91.55 2.35 2194.17 0.43 442.90 1751.27 0.06 R2 TOTAL 1 3.78 Notes for the table above: 1. Motor Torque in above table is from GE drawing 257HA264.2. Motor Torque in above table is read from mid-point of applicable speed range.3. Motor Torque in lb-ft is obtained by multiplying the torque from the curve by motor at applicable voltage.4. Pump torques are from GE Curve 257HA264 and then multiplied by motor base torque.5. Net Torque is motor torque minus pump torque, both in lb-ft.6. Time in Seconds to accelerate through an RPM Increment

=MWK 2 OPumP + Motor)x RPM Increment]

(307.5 x Net Torque)

CALCULATION PAGE CALC NO. 9389-46-19-1 REVISION 002 PAGE NO. 10.0-7 CALCULATIONS AND RESULTS (cont'd)E, Control Circuit Evaluation for Voltage Dips The voltage recovery (@ DG terminal bus) is at least 88.4% after one second following the Core R2 Spray motor start. The voltage will continue to improve after one second due to the exciter and the governor characteristics.

These voltages during motor starting period (after the initial dip) are much better than the voltages expected during the operation from the offsite source. Table 2 has evaluated the effects on the control circuits of all services on the DG and has determined any transient effect during the short initial voltage dip and no lasting effects have been identified.

F. Protective Device Operation during Voltage Dips The voltage recovery (@ DG terminal bus) is at least 88.4% after one second following the Core j R2 Spray motor start. The voltage will continue to improve after one second due to the exciter and the governor characteristics.

These voltages during motor starting period (after the initial dip) are much better than the voltages expected during the operation from the offsite source, Therefore, the duration of starting current is shorter than operation from offsite power source. Because protective devices are set to allow adequate starting time at motor rated voltage and during operation from offsite power, protective device operation due to overcurrent is not a concern when operating from the DG power during LOOP concurrent with LOCA. For Example," TID-E&IC-02 provides that the recommended settings for thermal overloads (TOL) be able to withstand 1 duty cycle (two valve strokes) before tripping.

It is not expected that any of the operating valves will be required to complete a full duty cycle. Rather, operating valves are expected to complete 1 stroke (1/2 duty cycle) when called upon during DG operation.

Therefore, TOL settings will not be operated by the voltage dips. (Reference 35)Typical settings for the 480V MCC feed breakers allow for approximately 1800 amperes of current to flow for 20 seconds. Large motor starting will not take longer than 5 seconds, and the actual voltage recovery of the DG after 1 second Is more than 88%. With a 20 second delay in feed breaker tripping, the short time of the voltage dips will not cause feed breakers to be tripped.(Reference

45)

L:': CALCULATION PAGE CALC NO.9389-46-19.1 REVISION 003 PAGE NO. 10.04-8 G. Results of calculations Summary of Motor Starting Times Device Total Starting Time Starting Time Allowed.(Seconds) (Seconds) (See IV.AB)LPCI Pump 3C 3.77 5 LPCI Pump 3D 3.67 5 Core Spray Pump 3.90 The results of the calculation show that the minimum voltage drop to the DG powered buses occur when the Core Spray Pump starts. The table below shows the starting (at 0.1 sec.)voltages and recovery voltages after 1 second following the start.R3 Equipment Starting KVA Voltage Drop @ Voltage Recovery Description 1 0.1 Second after 1 second LPCI Pump 3C 4933.8 66.83% of 4160V 92.44% of 4160V LPCI Pump 3D 1 4040.5 71.00% of 4160V 95.16% of 4160V Core.Spay.Pum 38 61 .4R3 Core Spray Pump3 6125.4 62.18% of 4160V 88.46% of 4160V CCSW Pump 3D 4150.0 70.52% of 4160V 94.96% of 4160V During LOOP concurrent with LOCA there is a 5 second time delay from the start of the first LPCI Pump to the start of the second LPCI Pump. Starting time calculations for the LPCI Pumps show that both the pumps accelerate to full speed in under 4 seconds. Therefore by the time the second LPCI Pump starts, the first LPCI Pump is at full speed (i.e. running load). There is also a 5 second time delay from the start of the second LPCI Pump to the start of the Core Spray Pump. Therefore, by the time the Core Spray pump starts, the second LPCI Pump is at full speed.

CALCULATION PAGE CALC NO. 9389-46-19-1 REVISION 002 PAGE NO. 10.1-0 CALCULATIONS AND RESULTS (cont'd)Section 10.1 Section 10.1 contains the MS Excel calculations of starting kVA and starting times for the 4,16 kV motors. R2

1) Startinq kVA of the DG auxiliaries after the closure of the DG output breaker (Paae C1 & C2 Calculation)

Aggregate Aggregate Aggregate SKW =SKVAR =SKVA =SKVA =ISKVAI =807.30 1391.60 SKW + j SKVAR 807.3 + j1391.6 1608.81 (Ref. Table 4)(Ref. Table 4)R3 R3 Angle = tan-(SKVAR/SKW)

Angle = 59.88 Degrees To determine the initial starting voltage (Vcuve j) and 1 second recovery voltage (VuMm 1), use the Dead Load Pickup Curve (SC-5056) and SKVA (calculated above) as "Generator Reactive Load MVA". Multiply the initial and 1 second curve values by 0.97 to account for a -3% curve tolerance.

Initial Voltage Dip: Vcwvi = 87.9%of 4160V Vdip = VUNO x 0.97 Vd 1 p = 85.3% of 4160V R3 R3 Voltage recovery after 1 second: Vcuer, = 100.0% of 4160V

= Vculrve x 0.97 Vrecovery

= 97.0% of 4160V Calc. No, 9389-46-19-1 Rev. 3 Page 10.1-1

2) Starting of First LPCI Pump 3C (700HP)Motor parameters Base Voltage (motor rated voltage)Operating Voltage Base Current (full load)Locked Rotor Current Vb... = 4000 Vop 4160 IFL= 90'LRC = xL x 7.00 1 LRC = 630.0 Volts Volts Amps (Ref. 18)(Ref. 18)(Ref. 18)(Ref. 18)Starting Power factor PFstat = 0.20 Motor Cable data Conductor Size 3/C -#1/0 -5kV Cable Number 30980 Cable Length (feet) L = 227 Cable Impedance (ohms) Z-be = 0.02906 + jO,00872 Motor parameters to be used to determine starting time of the pump.Motor Base Torque Torquet = 1030 ft-lb WK 2 Pump (wet) WKpump = 18.1 lb-ft 2 WK 2 Motor WKmow = 190.0 Ib-ft 2 Motor rated RPM RPM = 3600 2) Starting kVA of LPCI Pump 3C Calculating the starting kVA at base voltage SKVA 1 = 43 x Vb.. x ILRC)1 000 SKVA 1 = 4364.8 Calculating starting kVA at operating voltage KVA~tIrtl

= (VoP 2 N Vb.2) X SKVA 1 KVAsrt, = 4720.9 (ETAP)(ETAP)R2 (Ref. 15)(Ref. 15)(Ref. 15)(Ref. 15)at Pfstr = 0.20 CaIc. No. 9389-46-19-1 Rev. 2 Page 10.1-2 The starting kVA is converted at starting power factor to the following KW and KVAR values: Motor parameters LPCIst.,t

= (KVAuj x PF.,.,t) + j x x (sin(acos(PF 5 t.,)))]LPClIt, = 944.19 + j4625.55 kVA ii) When the LPCI Pump starts, the LPCI Core Spray Pump Area Cooling Unit 3B, and MOV 3-1501-13B will also start operating.

The starting load is summarized in Table 4, with the results as follows: Additional Starting auxiliary load: Loadt, = 23.1 + j30.1 kVA iii) When the first LPCI Pump starts, at that time, there are running loads on DG powered Buses.Therefore, the actual voltage drop on the bus will be more than that of the starting of the first LPCI Pump alone. The running kW & kVA from the ETAP DG3_BkrCl scenario is: kWETAP1000A 392 kVARETAPlOo%

293 R3 KVAETAP 1oo% 489 The current at 100% voltage (i.e. at 4.16kV) from ETAP is: Irun _oo- = 67.9 Amps f R3 The KVA & KW from the special ETAP scenario DG3_Bkr Vlow for the reduced voltage condition is: Vr.du.. = 2496 Volts KWreducd = 386 KVARr~e,,d

= 229 R3 KVArecd = 449 The power factor from the same ETAP scenario at reduced voltage running load is: PFred..d 0.860 R3 The calculated current at the reduced voltage for this kVA load from ETAP is:=reduced 103.9 Amps R3 Calc. No. 9389-46-19-1 Rev. 3 Page 10. 1-3 Therefore, the incremental difference of current is: 'deflta reduced -Irun 100%Idetta = 36.00 Amps R3 The incremental KVA (KVAdea) used to determine additional starting kVA is KVAkefa = (43 x Vo 0 x Idefta) / 1000 KVAden, = 259.4 R3 The incremental running load equivalent is converted to an equivalent KW and KVA from the incremental kVA previously determined KVAincrement

= (KVAdert x PFr~eucd)

+ j X [KVAdeita x (sin(acos(PFreduu)))]

KVAIncrement

= 223.08 + j132.37 kVA R3 iv) The starting KVA equivalent as seen by the DG is calculated as follows: LPCI Pump 3C starting load: LPCItart = 944.19 + $4625.55 kVA Additional starting load: Loadtart = 23.1 + j30.1 kVA Incremental running load equiv.: KVAincrement

= 223.08 + j132.37 kVA R3 Total Starting kVA equivalent:

Total 8 tart = Loadstanr, + KVAincrement

+ LPCIstart Totalstrt

= 1190.36 + j4788.02 kVA R3 Vectorstart

=/Re(Totalst"r)2

+ lm(Total,,Wr 2 Vectorstrt=

4933.77 kVA R3 CaIc. No. 9389-46-19-1 Rev. 3 Page 10.1-4 To determine the initial starting voltage ) and 1 second recovery voltage (Vcurw isej), use the Dead Load Pickup Curve (SC-5056) and Vectorwrt (calculated above)as "Generator Reactive Load MVA". Multiply the initial and 1 second curve values by 0.97 to account for a -3% curve tolerance.

Initial Voltage Dip: Vcur,,irnm

= 68.9%of 4160V drop Vcurveinitbal X 0.97 Vdp = 66.83% of 4160V Voltage recovery after 1 second: R3 R3 R3 R3 Vcurveisec

= 95.3%of 4160V VdropIsec

= Vcurve isec X 0.97 92.44% of 4160V v) The impedance of the pump feed cable, as defined earlier: Zcb, = 0.02906 + jO.00872 ohms IZcabe 1= 0.0303 ohms The maximum motor terminal line-to-line voltage drop which may occur on this cable given the LRC is: ILRC = 630.0 Amps Vd.itrna.

= (43 X ILRC X JZ.W 0)l Vdft% = Vd. max / Vop X 100 Vdelhaý_, 33.11 Vda_% = 0.80%Volts of 4160V CaIc. No. 9389-46-19-1 Rev. 3 Page 10.1-5 Deducting the voltage drop due to motor feed cable to determine the actual voltage at the motor terminals, the initial starting voltage at the motor terminals is: Vinitii.LPC13C

= Vdrop -Vdelta%Vinifi.LPC3C

= 66.04% of 4160V R3 The voltage after 1 second at the motor terminals is: Vlsecond,LPCi3c

= Vdrop lsec -Vdelta%VlsedLPC13C

= 91.65% of 4160V R3 Calculation of Motor Starting Time: Initial Starting Voltage (converted to decimal) Vi = Vntai.LPCi3C

/ 100 Voltage at 1 second (converted to decimal) V1 = Vlsecond.LPCt3C

/100 Total inertia of the motor and pump together from above (WK 2): WKpuMp = 18.1 lb-ft 2 WKmotor = 190.0 Ib-ft 2 WK2 = WKPUrP + WKto, WK2 = 208.10 lb-ft 2 The folowing variables define the speed intervals and corresponding motor and pump torque increments necessary to compute the starting time of the pump.%RPM, -initial RPM of increment as a percentage of rated RPM%RPMf -final RPM of increment as a percentage of rated RPM%Torqueuot, -motor torque value from pump torque-speed curve read from the midpoint of the applicable speed range.%Torquepump

-pump torque value from pump torque-speed curve read from the midpoint of the applicable speed range.%Volt -either the initial voltage (Vi) or the voltage at 1 second (Vi).Note that the determination of which voltage (%Volt) to use is made when the motor acceleration time exceeds 1 second, and that can only be determined by looking at the calculated cumulative time below (i.e. Vi until 1 second, V1 after that).Calc. No. 9389-46-19-1 Rev. 3 Page 10.1-6 I R2%rpm,%rpmf %Torqueoor

%Torquepump 0 10 20 30 40 50 60 70 80 90ý95 10 20 30 40 50 60 70 80 909 0.80 0.80 0.81 0.82 0.83 0.85 0.92 1.07 1.50 2.20 2.35 0.00 0.02 0.05 0;06 0.10 0.15 0.19 0.25 0.32 0.38 0.43%Volt Vi Vi VI VI V1 VI V1 V1 V1 Vli VI Compute the motor torque at the initial voltage (Vi) and at I second (V1) using the motor torque at motor rated voltage (Ref 15).Vop = 4160 Vbase = 4000 Volts Volts TorquemOt~ratvOIt99e

=[Torquie 1.d x (%Volt X V 0 P)2/ VW 2]I ft-lb Convert the percentage of motor torque from the curve to motor torque by using the applicable motor torque computed at Vi and V1 above.Torquemftr

= (Torquemjt, x Torque ora.,t.,OR,,g.)

ft-lb Torque of the pump is determined by multiplying the pump torque from Ref. 15 by the base torque of the motor.Torquepump

=Torqueted x %Torquempu~

ft-lb Net torque is the motor torque minus the pump torque: TorqueN 6 t = Torquemt 0 , -Torquep,,, ft-lb Speed increment

(% of rated RPM):%Arpm = %rpm,- %rpm, Calc. No. 9389-46-19-1 Rev. 2 Page 10.1-7 Time in seconds to accelerate through an RPM increment is calculated by the following:

Time = (WK2 x RPM x %Arpm / 100) / (307.5 x TorqueN;)

seconds Cumulative time from 0% to full speed at %Arwn increments.

Timer:,r = Total Cumulative Start Time Calculations:

%rpm %Torquemtr

%Torquepmp

%TorqueNt 10 20 30 40 50 60 70 80 90 95 99 388.66 388.66 757.89 767.25 776.61 795.32 860.82 1001.17 1403.51 2198.83 0.00 20.60 51.50 61.80 103.00 154.50 195.70 257.50 329.60 391.40 442.90 388.66 368.06 706.39 705.45 673.61 640.82 665.12 743,67 1073.91 1667.08 1755,93 Time 70.63 0.66 0.34 0.35 0.36 0.38 0.37 0.33 0.23 0.07 0.06 Timec 1 mul 0.63 1.29 1.63 1.98 2.34 2.72 3.09 3.41 3.64 3.71 3.77 R3 Therefore, the total time for this pump to accelerate is: Time~,~, =3,77 seconds Calc. No. 9389-46-19-1 Rev. 3 Page 10.1-8

3) Starting LPCI Pump 3D (700HP)Motor parameters Base Voltage (motor rated voltage)Operating Voltage Base Current (full load)Locked Rotor Current Vbf, = 4000 Vop = 4160 IFL = 90 1 LRC = IFL x 5.3 ILRC = 477.0 Volts Volts Amps (Ref. 59) R2 (Ref. 59)(Ref. 59) R2 (Ref. 60)Starting Power factor PFStrt = 0.229 Motor Cable data Conductor Size 3/C -#1/0 -5kV Cable Number. 30986 Cable Length (feet) L = 191 Cable Impedance (ohms) = 0.02445 + jO.00733 Motor parameters to be Used to determine starting time of the pump.Motor Base Torque Torquerted

= 1033 ft-lb WK 2 Pump (wet) WKpump = 18.1 b-ft 2 WK 2 Motor WKmoor, = 183.0 lb-fl 2 Motor, rated RPM RPM = 3600 2) Starting kVA of LPCI Pump 3D Calculating the starting kVA at base voltage SKVA 1 = (43 X X ILRC)/1000 SKVA 1 = 3304.8 Calculating starting kVA at operating voltage KVAStartl

= (Vp 2 Nba.2) X SKVA1 KVAst.tj = 3574.4 at Pfts, 5 (ETAP)(ETAP)(Ref, 59)(Ref. 15)(Ref. 59)(Ref. 59)R2 R2 R2 R2 R2= 0.229 CaIc. No. 9389-46-19-1 Rev. 2 Page 10.1-9 The starting kVA is converted at starting power factor to the following KW and KVAR values: Motor parameters LPClszart

= (KVAmtl x PF~t.) + j x [KVAstr11 x (sin(acos(PFstar)))]

LPCIt 6 ,t = 818.54 + j3479.44 kVA ii) There are no additional loads starting with this pump: Additional Starting auxiliary load: Load,. = 0 + jO kVA iii) When the second LPCI Pump starts, at that time, there are running loads on DG powered Buses.Therefore, the actual voltage drop on the bus will be more than that of the starting of the second LPCI Pump alone. The running kW & kVA from the ETAP DG3_UVReset scenario is: KWETAPO00%

= 919 KVARETAPýI0%

= 550 R3 1071 The current at 100% voltage (i.e. at 4.16kV) from ETAP is: Irun-Joo%

= 148.6 Amps R3 The KVA & KW from the special ETAP scenario DG3_UVyVlow for the reduced voltage condition is: Vreduced = 2496 Volts KVVreduced

= 916 KVARmduwd

= 489 R3 KVAodj-d = 1038 The power factor from the same ETAP scenario at reduced voltage running load is: PFredu,, = 0.882 1R3 The calculated current at the reduced voltage for this kVA load from ETAP is: Ireduced = 240.1 Amps JR3 Calc. No. 9389-46-19-1 Rev. 3 Page 10.1-10 Therefore, the incremental difference of current is: Idelta = Ireduced -'run_100%Idelta = 91.50 Amps R3 The incremental KVA (KVAder,)

used to determine additional starting kVA is KVAdeta = (ý3 X Vop X Idelta) / 1000 KVAdelta = 659.3 R3 The incremental running load equivalent is converted to an equivalent KW and KVA from the incremental kVA previously determined KVAincrement

= (KVAdetta X PFreduced)

+ j x [KVAedjtG x (sin(acos(PFeduce)))]

KVAincmement

= 581.49 + j310.69 kVA R3 iv) The starting KVA equivalent as seen by the DG is calculated as follows: LPCI Pump 3D starting load: LPClIst 5 t = 818.54 + j3479.44 kVA R3 Additional starting load: Loadstart

= 0 + jo kVA Incremental running load equiv.: KVAincmrent

= 581.49 + j310.69 kVA R3 Total Starting kVA equivalent:

Totaistait

= Loadst.t + KVAncement

+ LPCIstart Total 6 tart = 1400.03 + j3790.12 kVA 1R3 Vectorsta, =jRe(Totalst.rt)2

+ lm(Total 5 trt)2 Vectortart

= 4040.44 kVA R3 CaIc. No. 9389-46-19-1 Rev. 3 Page 10.1-11 To determine the initial starting voltage (V,,e initial) and 1 second recovery voltage_ use the Dead Load Pickup Curve (SC-5056) and Vectors=. (calculated above)as "Generator Reactive Load MVA". Multiply the initial and 1 second curve values by 0.97 to account for a -3% curve tolerance.

Initial Voltage Dip:= 73.2% of Vdrop Vcurve initial x 0.97 Vdp= 71.00% of 4160V 4160V Voltage recovery after 1 second: R3 R3 R3 R3 V., 1 ,.e = 98.1%of 4160V Vdrop.c = VCurvaisec X 0.97 Vdropilsec"=

95.16% of 4160V v) The impedance of the pump feed cable, as defined earlier, Zb= 0.02445 + jO.00733 ohms IZble 1= 0.0255 ohms The maximum motor terminal line-to-line voltage drop which may occur on this cable given the LRC is: ILRC = 477.0 Amps Vd=_.x ...= '3 x ILRc X IZ-cabeI Vdlta_% = Vdllta max / Vop x 100 Vdelam.x = 21.09 Vdoft, % = 0.51%Volts of 4160V CaIc. No. 9389-46-19-1 Rev. 3 Page 10.1-12 Deducting the voltage drop due to motor feed cable to determine the actual voltage at the motor terminals, the initial starting voltage at the motor terminals is: VinUMItLPC13D=

Vdrop -Vde.tt%V=fLLPC13O 70.50% of 4160V R3 The voltage after 1 second at the motor terminals is: Vlsecond.LPCl3D

Vdrop isec Vdelta%V1sn.LPC13D

94.65% of 4160V JR3 Calculation of Motor Starting Time: Initial Starting Voltage (converted to decimal) Vi = Vinitiai.LPCI3D

/ 100 Voltage at 1 second (converted to decimal) V1 = VisecodLPC13O

/100 Total inertia of the motor and pump together from above (WK 2): WKpump = 18.1 lb-ft 2 WKmotor = 183.0 lb-ft 2 WK2 = WKpump + WKmotor WK2 = 201.10 Ib-ft 2 The folowing variables define the speed intervals and corresponding motor and pump torque increments necessary to compute the starting time of the pump.%RPMO -initial RPM of increment as a percentage of rated RPM%RPMf -final RPM of increment as a percentage of rated RPM%Torquemow

-motor torque value from pump torque-speed curve read from the midpoint of the applicable speed range.%Torquepump

-pump torque value from pump torque-speed curve read from the midpoint of the applicable speed range,%Volt -either the initial voltage (Vi) or the voltage at 1 second (V1).Note that the determination of which voltage (%Volt) to use is made when the motor acceleration time exceeds 1 second, and that can only be determined by looking at the calculated cumulative time below (i.e. Vi until 1 second, VI after that).Calc. No. 9389-46-19-1 Rev. 3 Page 10.1-13

%rpm,%rpmf

%Torquepump 0 10 20 30 40 50 60 70 80 95" 10 20 30 40 50 60 70 80 90 95 99 0.70 0.75 0.75 0.75 0.75 0.80 0.85 1.00 1.40 1,85 1.50 0.00 0.02 0.05 0.06 0.10 0.15 0.19 0,25 0.32 0.38 0.43%Volt Vi Vi VI Vl Vl VI VI VI VI-VI VI ,Vi R2 Compute the motor torque at the initial voltage (Vi) and at 1 second (V1) using the motor torque at motor rated voltage (Ref 15).Vop = 4160 Vbase = 4000 Volts Volts= r~que~ijX

(%Volt X V 0 P)2/ Vba.2" ft-lb Convert the percentage of motor torque from the curve to motor torque by using the applicable motor torque computed at Vi and V1 above.Torquem~t, = (Torquem~tc x Torque avvota,,ge ft-lb Torque of the pump is determined by multiplying the pump torque from Ref. 15 by the base torque of the motor.Torquoeump

=Torque,.tw x %Torquepu,, ft-lb Net torque is the motor torque minus the pump torque: TorqueNet

= Torquemot, -Torquepump ft-lb Speed increment

(% of rated RPM):%Aq"m = %rpmf -%rpm, Calc. No. 9389-46-19-1 Rev. 2 Page 10.1-14 Time in seconds to accelerate through an RPM increment is calculated by the following:

Time = (WK2 x RPM x %Arpm / 100)/ (307.5 x TorqueNw) seconds Cumulative time from 0% to full speed at %m increments.

Time,,,, = Total Cumulative Start Time Calculations:

%rpm %Torquem 0 ,,,, %Torquep,,, 10 20 30 40 50 60 70 80 90 95 99 388.69 416.46 750.71 750.71 750.71T 800.75 850.80 1000.94 1401.32 1851.74 1501.41 0.00 20.66 51.65 61,98 103 30 154.95 996.27 258.25 330.56 392.54 444.19%TorqueNet 388.69 395.80 699.06 688.73 647.41 645.80 654.53 742.69 1070.76 1459.20 1057.22 Time 0.61 0.59 0.34 0.34 0.36 0.36 0.36 0.32 0.22 0.08 0.09 0.61 1.20 1.54 1.88 2.24 2.61 2.97 3.28 3.50 3.58 3.67 Timeu,,, R3 Therefore, the total time for this pump to accelerate is: Timec,,Ilo

=3.67 seconds Calc. No. 9389-46-19-1 Rev. 3 Page 10.1-15

4) Starting Core Spray Pump 3B (800HP)Motor parameters Base Voltage (motor rated voltage)Operating Voltage Base Current (full load)Locked Rotor Current Vbase = 4000 Vop = 4160 IFL = 102 ILRC = IFL X 7.00 ILRC = 714.0 Volts Volts Amps (Ref. 17)(Ref. 17)(Ref. 17)(Ref. 17)Starting Power factor PFStart= 0.20 Motor Cable data Conductor Size 3/C -#4/0 -5kV Cable Number 30962 Cable Length (feet) L = 148 Cable Impedance (ohms) ---le 0.00946 + jO.0053 Motor parameters to be used to determine starting time of the pump.Motor Base Torque Torquertd

= 1180 ft-lb WK 2 Pump (wet) WKpump = 18.1 lb-ft 2 WK 2 Motor WKmotor = 220.0 Ib-ft2 Motor rated RPM RPM = 3600 2) Starting kVA of Core Spray Pump 3B Calculating the starting kVA at base voltage SKVA 1 = (3 X X ILRC)/1000 SKVA 1 = 4946.7 Calculating starting kVA at operating voltage KVA 5 tart = (VoP 2/Vb, 2) x SKVAi KVAstor 1= 5350.4 (ETAP)(ETAP)R2 (Ref. 15)(Ref. 15)(Ref. 15)(Ref. 15)at Pft,= = 0,20 Calc. No. 9389-46-19-1 Rev. 2 Page 10.1-16 The starting kVA is converted at starting power factor to the following KW and KVAR values: Motor parameters CoreSpraystat

` (KVAst..a x PFstan) + j x [KVAstati x (sin(acos(PFtrt)))]

CoreSpraym

= 1070.08 + j5242.29 kVA ii) When the Core Spray Pump starts, MOVs 1402-38B, 1402-25B, Turbine Room 3 Emergency Lighting; and RX Building Emergency Lighting will also start operating.

The starting load is summarized in Table 4, with the results as follows: Additional Starting auxiliary load: Load 5 tn = 54.1 + j45.7 kVA iii) When the Core Spray Pump starts, at that time, there are running loads on DG powered Buses.Therefore, the actual voltage drop on the bus will be more than that of the starting of the Core Spray Pump alone. The running kW & kVA from the ETAP DG3_T=5sec scenario is: KWETAP_100%

= 1413 KVARETAP 10 0% = 810 R3 KVAETAP1oo%

= 1629 The current at 100% voltage (i.e. at 4.16kV) from ETAP is: Irju.oo = 226.0 Amps The KVA & KW from the special ETAP scenario DG3_T=5sVlow output at reduced voltage are: VrdU.d = 2496 Volts KWreduced

= 1412= 752 R3 KVAreduced

= 1600 The power factor from the same ETAP scenario at reduced voltage running load is: PFrjuce. = 0.883 I R3 The calculated current at the reduced voltage for this kVA load from ETAP is: freduced 370.1 Amps R3 Catc. No. 9389-46-19-1 Rev. 3 Page 10.1-17 Therefore, the incremental difference of current is: Idefta = Ireduced -Irun_loO%Idta= 144.10 Amps R3 The incremental KVA (KVAdejta) used to determine additional starting kVA is KVAieia = (ý/3 x Vop x Ideta) / 1000 KVAdeita = 1038.3 R3 The incremental running load equivalent is converted to an equivalent KW and KVA from the incremental kVA previously determined KVAincement

= (KVAta x PFjducd) + j X [KVAdget x (sin(acos(PFrced)))j KVAincrement

= 916.81 + j487.34 kVA j R3 iv) The starting KVA equivalent as seen by the DG is calculated as follows: Core Spray Pump starting load: CoreSpraystart

= 1070.08 + j5242.29 kVA Additional starting load: Load 5 t 1 8 t = 54.1 + j45.7 kVA Incremental running load equiv.: KVAincrement

= 916.81 + j487.34 kVA R3 Total Starting kVA equivalent:

Totalstart

= Loadstart

+ KVAincement

+ CoreSpraytwrt Totaist 5 rt = 2040.99 + j5775.34 kVA R3 Vectorstar

=[Re(Totalstrta)2

+ lm(Totaltrt) 2 Vector 5 t. = 6125.37 kVA R3 Caic. No. 9389-46-19-1 Rev. 3 Page 10.1-18 To determine the initial starting voltage (V 8=8 ) and I second recovery voltage (Vc=1_j,), use the Dead Load Pickup Curve (SC-5056) and Vector.=, (calculated above)as "Generator Reactive Load MVA". Multiply the initial and 1 second curve values by 0.97 to account for a -3% curve tolerance.

Initial Voltage Dip: Vcurvo-initial

= 64.1%of 4160V Vdrop = Vcue _initial X 0.97 Vdop = 62.18% of 4160V R2 R2 R2 Voltage recovery after 1 second: Vrurvjesec

= 91.2% of 4160V Vdrop_l1 = Vcurv-isec X 0.97 VdIP1lec = 88.46% of 4160V v) The impedance of the pump feed cable, as defined earlier: R2 Zcab4 = 0.00946 + j0.0053 IZabo J= 0.0108 ohms ohms The maximum motor terminal line-to-line voltage drop which the LRC is: may occur on this cable given ILRC = 714.0 Amps Vdt=_m. = q3 X ILRC X IZ-bW)ll= Vde mta_rn / Vop X 100 Vdetma, = 13.41 Vdelý 0.32%Volts R2 of 4160V CaIc. No. 9389-46-19-1 Rev. 2 Page 10.1-19 Deducting the voltage drop due to motor feed cable to determine the actual voltage at the motor terminals, the initial starting voltage at the motor terminals is: VnJapI.C3B Vdrop -Vdett._%Vjnjj.csp38 61.85% of 4160V R2 The voltage after 1 second at the motor terminals is: Vlsecond.CSP3B

= Vdrop lsec -Vdelta%VlseCond.csP3a

= 88.14% of 4160V R2 Calculation of Motor Startinq Time: Initial Starting Voltage (converted to decimal) Vi = Vinitiai.CSP3B

/100 Voltage at 1 second (converted to decimal) VI = V1seond.csP3B

/100 Total inertia of the motor and pump together from above (WK 2): WKpump = 18.1 Ib-ft 2 WKmotor = 220.0 Ib-ft 2 WK2 = WKpump + WKmotor WK2 = 238.10 lb-ft2 The folowing variables define the speed intervals and corresponding motor and pump torque increments necessary to compute the starting time of the pump.%RPMO -initial RPM of increment as a percentage of rated RPM%RPMf -final RPM of increment as a percentage of rated RPM%Torquemotor

-motor torque value from pump torque-speed curve read from the midpoint of the applicable speed range.%Torquepmp

-pump torque value from pump torque-speed curve read from the midpoint of the applicable speed range.%Volt -either the initial voltage (Vi) or the voltage at 1 second (VI).Note that the determination of which voltage (%Volt) to use is made when the motor acceleration time exceeds 1 second, and that can only be determined by looking at the calculated cumulative time below (i.e. Vi until 1 second, VI after that).CaIc. No. 9389-46-19-1 Rev. 2 Page 10.1-20 R2%rpm, 0 10 20 30 40 50 60 70 80 90 95%rpmf %Torqueo,, %Torquepump 10 20 30 40 50 60 70 80 90 95 99 0.89 0.90 0.90 0.90 0.90 0,94 1.02 1.18 1.61 2.25 2.35 0.00'0.00 0.02 0.06 0.13 0.20 0.26 0.35 0.46 0.58 0.65%Volt Vi Vi VI V1 VI VI V1, V1 V1 VI V1 Compute the motor torque at the initial voltage (Vi) and at 1 second (VI) using the motor torque at motor rated voltage (Ref 15).Vop = 4160 Vse = 4000 Volts Volts Torqueotor 8 atvoft = [Torque,,t X (%Volt X VP)2/ Vb'se 2 j ft-lb Convert the percentage of motor torque from the curve to motor torque by using the applicable motor torque computed at Vi and VI above.Torqueý&tor

= (Torquemotor x Torquemotoratvotage) ft-lb Torque of the pump is determined by multiplying the pump torque from Ref. 15 by the base torque of the motor.Torquepump

= Torquerat x %Torquempu~

ft-lb Net torque is the motor torque minus the pump torque: Torque~e = Torquem,,t,, -Torquepump ft-lb Speed increment

(% of rated RPM):%Arm = %rpmf -0/%rpm.Calc. No. 9389-46-19-1 Rev. 2 Page 10.1-21 Time in seconds to accelerate through an RPM increment is calculated by the following:

Time = (WK2 x RPM x %Arpm / 100) /(307.5 x TorqueNet) seconds Cumulative time from 0% to full speed at increments.

Time,.,,, = Total Cumulative Start Time I R2 Calculations:

%rpmf %TorqueMtoo

.%Torque~p

%TorqueNet Time Timeumui 120 300 40 50 60 70 80 90 95 99 434.59 439.48 892.39 892.39 892.39 932.05 1011.37 1170.02 1596.38 2230.97 2330.12 0.00 0.00 23,60 70.80 153.40 236.00 306.80 413.00 542.8o0 767 .00_ o 434.59 439.48 868.79 821.59 738.99 696.05 704.57 757.02 1053.58 1546,57 1563.12 0.64 1.28 1.60 1.94 2.31 2.71 3.11 3.48 3.74 3.83 3.90 seconds R2 Therefore, the total time for this pump to accelerate is: Time=, 1 , 0 o =3.90 Calc. No. 9389-46-19-1 Rev. 2 Page 10.1-22

5) Starting of Containment Cooling Service Water Pump 3D (500HP)I R2 Motor parameters Base Voltage (motor rated voltage)Operating Voltage Base Current (full load)Locked Rotor Current Starting Power factor VbaIe = 4000 Vop = 4160 IFL = 67'LRC = IFL X 5.91 ILRC = 395.97 PFýta, = 0.20 Volts Volts (Ref. 26)Amps (Ref. 26)(Ref. 52 & 43)(Ref. 41)i) Starting kVA of CCSW Pump Calculating the starting kVA at base voltage SKVAI ('43 x Vbase X ILRC)/i 0 0 0 SKVA 1= 2743.4 Calculating starting kVA at operating voltage KVAst.,tn (Vop 2 NVbaS 2) X SKVA 1 KVA=.,t = 2967.2 at Pft,, 5= 0.20 The starting kVA is converted at starting power factor to the following KW and KVAR values: CCSW.rt = (KVA.tar.t x PF.vt) + j x [KVAsiani x

CCSWe, = 593.44 + j2907.27 kVA ii) The CCSW Pumps are turned on manually between 10 minutes and 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> depending on the situation.

For the purpose of this calculation the CCSW Pump 3D is turned on by the operator after 10 minutes into the event and CCSW Pump 3C is turned on shortly after CCSW Pump 3D.The CC Heat exchanger Discharge Valve is required to operate to exchange CC residual heat with the CCSW system. When CCSW Pump 3D starts, the Containment Cooling Heat Exchanger Discharge Valve (3-1501-3B) also starts. When CCSW Pump 3C starts, the CC Heat Exchanger Discharge Valve is considered to be in operation (i.e. running load), however, at this time the CCSW Pump Cubical Cooler Fans (total 4) are also starting.This calculation will only calculate the voltage dip due to the starting of CCSW Pump 3D (the first CCSW pump) instead of CCSW Pump 3C because the starting kVA (due to the votlage dip) for the load already on the diesel when the 3D pump starts is the largest. However, the 3D pump is evaluated with the starting kVA of the loads that start concurrently with the 3C CCSW pump as this load is greater than the load starting concurrently with the 3D CCSW pump. The starting load is summarized in Table 4, with the results as follows: R2 R2 Calc. No. 9389-46-19-1 Rev. 2 Page 10.1-23 Additional Starting auxiliary load:6 Loadwd ý 62.7 + j67.6 kVA iii) When the CCSW Pump 3D starts, there are running loads on DG powered Buses. Therefore, the actual voltage drop on the bus will be more than that of the starting of the CCSW Pump 3D alone.All of the valves which are initiated by LOOP/LOCA have completed their operations and have stopped operating before CCSW Pump 3D was started. Therefore, these valve loads are taken off from the initial running load.The running kW & kVA from the ETAP scenario DG3_T=10-min is: KWETAP)00%:=

2106 KVARETAP 100% = 1095 R3 KVAETAP_10 0% = 2374 The current at 100% voltage (i.e. at 4.16kV) from ETAP is: Irun-loo = 329.4 Amps R3 The KVA & KW from the special ETAP scenario DG3_T=10-mVL for the reduced voltage condition is: V~uce = 2496 Volts KWr.duced

= 2084 KVARreduced

= 1024 R3 KVAeduced

= 2322 The power factor from the same ETAP scenario at reduced voltage running load is:= 0.897 R3 The calculated current at the reduced voltage for this kVA load from ETAP is: Ireduced = 537.2 Amps R3 Calc. No. 9389-46-19-1 Rev. 3 Page 10.1-24 Therefore, the incremental difference of current is: Idelta reduced -run_100%Idela= 207.80 Amps R3 The incremental KVA (KVA )jt) used to determine additional starting kVA is KVAde1ta = (43 x Vp x Ideft) / 1000 KVAda = 1497.3 R3 The incremental running load equivalent is converted to an equivalent KW and KVA from the incremental kVA previously determined KVAincement

= (KVAdelta X PFreduced)

,+ j X [KVAdat, x KVAincrement

= 1343.05 + j661.84 kVA R3 iv) The starting KVA equivalent as seen by the DG is calculated as follows: CCSW Pump 3D starting load: CCSW 8 tert = 593.44 + j2907.27 kVA Additional starting load: Loadstar = 62.7 + j67.6 WA Incremental running load equiv.: KVWincrement

= 1343.05 + j661.84 kVA R3 Total Starting kVA equivalent:

Totalstat

= Loadstatt

+ KVAincrement

+ cCSWstart Total,,.,, = 1999.19 + j3636.71 kVA R3 Vectorstart

=IRe(Totalstat)2

+ Im(TotaIstart) 2 Vectoratat

= 4149.99 kVA R3 Caic. No. 9389-46-19-1 Rev. 3 Page 10.1-25 To determine the initial starting voltage (Vcurve iniial) and 1 second recovery voltage (V,ue1se), use the Dead Load Pickup Curve (SC-5056) and Vectors,. (calculated above)as "Generator Reactive Load MVA", Multiply the initial and 1 second curve values by 0.97 to account for a -3% curve tolerance.

Initial Voltage Dip: Vcrweinitw

= 727%of 4160V Vdrop = Vurve~jnita X 0.97 Vdrp 70.52% of 4160V Voltage recovery after 1 second: R3 R3 R3 R3 Vcu.e_,sc

= 97.9%of 4160V Vdrvplsec

= Vcurve 1 se X 0.97 Vdmp_, = 94.96% of 4160V CaIc. No. 9389-46-19-1 Rev. 3 Page 10.1-26 (4:-.

CALCULATION PAGE CALC NO. 9389-46-19-1 REVISION 003 PAGE NO. 11.0-1 XI COMPARISON OF RESULTS WITH ACCEPTANCE CRITERIA A. Continuous loading of the Diesel Generator The results of the calculation show that the maximum continuous load on the Diesel Generator is 2562 kW (ETAP Scenario DG3_T=10+min), which is below the 2600kW continuous rating of the Diesel Generator.

This loading value occurs only while the 1$t CCSW pump is energized and prior R3 to de-energizing one of the LPCI pumps. The maximum long term DG loading is 2385kW when both CCSW pumps are in operation (DG3_T=10++m and DG3_CRHVAC).

Therefore, from a continuous loading point of view the DG 3 has adequate capacity to accept the emergency load under LOOP concurrent with LOCA in accordance with the acceptance criteria.If the EDG is at 102% of its nominal frequency, the EDG load is expected to be 1.023 or 1.06 times larger since input power is proportional to the speed cubed (Section V.5). This results in a maximum loading of 2562kW x 1.023 = 2719kW which is within the 2000 hr 2860kW rating of the diesel. R3 The lowest power factor for the EDG load during the DG3_T=10+m, DG3_T=10++m and DG3_CRHVAC is 88.8%. This value is above the 88% acceptance criteria.B. Transient loading of the Diesel Generator Results of this calculation show that the minimum recovery voltage after 1 second following the start of any large 4-kv motors is 88.4% of 4160v which is above the 80% recovery requirement in the acceptance criteria.This calculation shows that when the Core Spray Pump starts, the initial voltage dips below 63% of operating voltage (i.e. 4160v). However, within 1 second after the start, voltage recovers to above 88% of 4160v. This voltage dip and recovery analysis utilizes the results of dynamic DG characteristics reflected in the manufacturer's curve. The curve includes the combined effect of exciter and governor in order to provide recovery voltages.In this calculation, the voltage dip was conservatively calculated from the Dead Load Pick up curve utilizing the total KVA loading on the DG bus. The Dead Load Pickup curve indicates that reactive load (KVAR) should be used to determine the voltage dip when using this curve. Even with that conservatism, the minimum voltage recovery after 1 second following the start is greater than 88% of 4160v. After one second, the voltage will continue to improve due to exciter and governor operation.

These recovery voltages during the motor starting period (after the first second) are much better than the voltage expected during operation from the offsite power source under degraded voltage condition.

Due to momentary sharp voltage drops to approximately 62% during large motor starting, certain contactors or relays may drop out, and that could use some control circuits to de-energize.

The required loads all have start signals which will be present through the voltage dip, and therefore, will be capable of restarting after the voltage dip. The calculation shows that the voltage will recover to more than 88% within 1 second following the start and will continue recover to 100%voltage due to exciter and governor operation.

Strip chart (Ref. 23) of the DG surveillance tests show that the DG recover to 100% of rated voltage within 3 to 4

_ Calculation For Diesel Generator 3 Loading Under Calc. No. 9389-46-19-1 SARGjENT & LUNDY 'Design Bases Accident Condition Rev. 1 Date EN(GNEERS X Safety-Related Non-Safety-Related Page 0/ 0-2Z of pFVAL Client ComEd Prepared by Date Project Dresden Station Unit 3 Reviewed by Date Proj. No. 9389-46 Equip. No. Approved by Date seconds. The 480v loads which may drop out will experience recovery voltages sufficient to pick up at different times due to variations in the network impedances (such as cable size and length) and variations in loading in each bus. This diverse restarting of 480v loads will have minimum impact on the DG performance.

Due to this momentary sharp drop, operating valves may stop momentarily.

However, Table 2 of this calculation shows that these valves would start operating again as soon as the sufficient operating voltage is recovered.

The analysis in Table 2 shows that the momentary voltage drop will not cause any unacceptable effect on the valve operation.

The momentary drop may cause the operating time of those valves to increase by 2 seconds. Even with that pause, the increased operating time is below the time limit set by various Dresden Operating Procedures (see References 47 through 51 and Ref. 53).For LOOP concurrent with LOCA the minimum voltage recovery is more than 88% after one second following the Core Spray motor start. The voltage will continue to improve after one second due to the excitor and governor characteristics.

Due to the momentary nature of this dips the duration of starting current at reduced voltage is shorter. Because protective devices are set to allow adequate starting time at motor rated voltage and during operation from offsite power ( voltages from offsite power will be much worse than the voltages when powered by the DG), the protective device operation due to over current is not a concem when operating from the DG power during LOOP concurrent with LOCA.Section X.F discussed whether protective devices will operate during system voltage dips. It was concluded that protective device ( e.g. TOL s and MCC feed breakers) operation is not a concern during the short voltage dips.Starting times for large motors during LOOP concurrent with LOCA were calculated to ensure the starting times of LPCI Pumps do not exceed 5 seconds (when the second pump starts the first pump is in full speed, likewise when the Core Spray starts the second LPCI pump is in running condition).

CALCULATION PAGE CALC NO. 9389-46-19-1 REVISION 003 PAGE NO. 12.0-1('t.-#)

XII CONCLUSIONS The results of the calculation show that the maximum continuous running load under the maximum loading scenario is less than the continuous 2600kW rating. The loading of the DG at maximum frequency of 102% IR is within the 2000hr nameplate rating. Also, the worst voltage recovery after one second following the start I of large 4kv motor (Core Spray Pump Motor) is above 88% of DG terminal rated voltage. This 88% voltage recovery is above the minimum voltage recovery of 80% per the DG specification K-2183 requirement.

The worst case power factor from the DG3_T=10+m time period and after is 88.8% which is above the 88%criteria.R3 The starting times for LPCI Pumps 3C, and 3D are less than 4 seconds, and the starting time for Core Spray Pump 3B is less than 5 seconds. All of these pump starting times are below the maximum allowable starting time of 5 seconds, and therefore, are acceptable.

Also, the analysis in Table 2, and the detailed explanation under the Calculation and Results section show that while some of the control circuits may dropout during the lowest portion of the voltage dip, no adverse effects are identified and no protective devices are expected to operate. This calculation also shows that momentary voltage dip will not cause the travel time of any MOV to increase any longer than allowable.

E & LUNDY ENGMEWIS Calculation For Diesel Generator 3 Loading Under Design Bases Accident Condition X ]Safety-Related 1" 1Non-Safety-Related Calc. No. 9389-46-19-1 Rev. I IDate Page /3.0 -I Of F/1,V IClient ComEd i IPrepared by iDate I I I I I IProject Dresden Station Unit 3 I IReviwed by jDate Reviewed by I I I I I II III I I I I I I I Proj. No. 938946 Equip. No.I lApproved by IDate Approved by XIIl. RECOMMENDATIONS None I 9 CALCULATION PAGE CALC NO. 9389-46-19-1 REVISION 003 PAGE NO. 14.0-1 XIV REFERENCES

1) S & L Standard ESI-167, Revision 4-16-84, Instruction for Computer Programs.2) Operation Technology Software, ETAP PowerStation

& Users Manual, Version 5.5.ON R3 3) Not used 4) Dresden DG 3 Calculation 7317-33-19-1, Revision 11. (superseded).

5) Quad Cities DG 1 Calculation 7318-33-19-1, Revision 0.6) Dresden Units 2 & 3, Equipment Manual from GE, Number GEK-786.7) Dresden Re-baselined Updated FSAR, Revision 0.8) Guidelines for Estimating Data (Used by Electrical Analytical Division in Various Projects like Clinton, Byron & Braidwood), which is used for determining

% PF and efficiency (Attached).

9) ANSI I IEEE C37.010-1979 for Determining X/R Range for Power Transformers, and 3-phase Inductor Motor, 10) S & L Standard ESA-104a, Revision 1-5-87, Current Carrying Capacities of Copper Cables.11) S & L Standard ESA-102, Revision 4-14-93, Electrical

& Physical Characteristics of Electrical Cables.12) Specification for Diesel Engine Generator Sets K-2183, Pages 3 and 8 (Attached).

13) Dead Load Pickup Capability (Locked Rotor Condition)

-Generator Reactive Load vs. % Voltage Graph (#SC-5056) by Electro-Motive Division (EMD) (Attached).

14) Speed -Torque -Current Curve (#297HA945-2) for Core Spray Pump by GE (Attached).

15) Speed -Torque -Current Curve (#857HA264) for RHR/LPCI Pump by GE (Attached).

I SARGENT& LUNDY I ENGWNEERS Calculation For Diesel Generator 3 Loading Under Design Bases Accident Condition X ISafety-Related lNon-Safety-Related Calc. No. 9389-46-19-1 Rev. 1 ofDate Page /4-,o'7. of Client CornEd Project Dresden Station Unit 3 Proj. No. 9389-46 Equip. No.Prepared by Date Reviewed by Date Approved by Date 16.Drawing No 12E-2306 12E-23351B, Sh. 3 12E-2344, Sh. 2 12E-2344, Sh. 1 12E-2344, Sh. 3 12E-2344, Sh. 4 12E-2346, Sh. 2 12E-2346, Sh. 1 12E-2346, Sh. 3 12E-2348 12E-2349, Sh. 1 12E-2349, Sh. 2 12E-2349, Sh. 3 12E-2350A, Sh. 1 12E-2350A, Sh. 2 12E-2350B, Sh. 2 12E-2350B, Sh. 1 12E-2350B, Sh. 2 12E-2351B, Sh. 2 12E-2351B, Sh. 1 12E-2374 12E-2375 12E-2389 12E-2389 12E-2393 12E-2400A Rev.w z p P p P AF AC AB F w w w AB AB x V V AC AA T M B C N S Drawing No 12E-3420B 12E-3420C 12E-3425 12E-3429, Sh. 1 12E-3429, Sh. 2 12E-3430, Sh. 1 12E-3430.

Sh. 2 12E-3431, Sh. I 12E-3431, Sh. 2 12E-3432 12E-3433 12E-3435, Sh. 1 12E-3435, Sh. 2 12E-3435, Sh. 3 12E-3436, Sb, 1 12E-3436, Sh, 2 12E-3436, Sh, 3 12E-3436, Sh, 4 12E-3438, Sh. 1 12E-3438, Sh. 2 12E-3439 12E-3440, Sh. I 12E-3440, Sh. 2 12E-3440, Sh. 3 12E-3441, Sh. I 12E-3441, Sh. 2 Rev.R D L P P AH AH R S P K P P P K L K K AA z H T U T N N

& LUNDY 1 Calculation For Diesel Generator 3 Loading Under Design Bases Accident Condition X Safety-Related Non-Safety-Related Calc. No. 9389-46-19-1 Page 140-3 of f Client CornEd Prepared by IDate IProject Dresden Station Unit 3 Reviewed by jDate I Proj. No. 9389-46 Equip. No.Approved by Date 12E-2400B 12E-2400B 12E-2400C, Sh. 2 12E-2400C, Sh. I 12E-2429, Sh. 2 12E-2431, Sh. 2 12E-2431, Sh. 1 12E-2432 12E-2433 12E-2435, Sh. 1 12E-2436, Sh. 1 12E-2436, Sh. 3 12E-2440, Sh. 2 12E-2440, Sh. 1 12E-2440, Sh. 3 12E-2441, Sh. 3 12E-2441.

Sh.12E-2441, Sh. 1-12E-2441, Sh. 4 12E-2441A 12E-2531 12E-2532 12E-2592 12E-2661 B 12E-2668A 12E-2678B 12E-2678C M M AA AA x x x Y IM x w w z z z w w w w AB V J T M U E 12E-3441, Sh. 3 12E-3441, Sh. 4 12E-3509, Sh. 2 12E-3522 12E-3529 12E-3531 12E-3532 12E-3546A, Sh. 1 12E-3546A, Sh. 2 12E-3547A 12E-3547B 12E-3548 12E-3592 12E-3577E 12E-3654B 12E-3662B 12E-3674A 12E-3674B 12E-3674C 12E-3674D 12E-3677C 12E-3677G 12E-3678A 12E-3678B 12E-3679A 12E-3679B 12E-3679C N N W K W R N F F A D H J S P D AB R AC W L K P T AD E D SARGENT& LUNDY ENGIEERS U Calculation For Diesel Generator 3 Loading Under Design Bases Accident Condition X 'Safety-Related I INon-Safety-Related Calc. No. 9389-46-19-1 Rev. 1 Iat Page 4,0-4 of Client CorEd Project Dresden Station Unit 3 Prepared by Date Reviewed by Date jProj. No. 9389-46 Equip. No.Approved by IDate I I Proj. No. 938946 Equip. No. I jApproved by Date 12E-281 1 B 12E-3301 12E-3302A 12E-3302B 12E-3303 12E-3304 12E-3305 12E-3306 12E-3311 12E-3312 12E-3314 12E-3319, Sh. I 12E-3319, Sh. 2 12E-3319, Sh. 3 12E-3320 12E-3344, Sh. I 12E-3344, Sh. 2 12E-3344, Sh. 3 12E-3344, Sh. 4 12E-3346, Sh. 1 12E-3346, Sh. 2 12E-3347 12E-3348 12E-3349 12E-33508 12E-3372 12E-3374 E x J R G Q Y Q AD AD H Q Q S U Q Q Q Q AE AE F F M Z L P 12E-381 lB 12E-6555A 12E-6556 12E-6606A 12E-681 1A 12E-6811B 12E-681 ID 12E-7552, Sh.2 12E-7555A 12E-7556 12E-7820 12E-7820A 12E-7820B M-1297 M-173 M-22 M-269 M-27 M-274 M-274 M-29, Sh. 2 M-29, Sh. I M-355 M-358 M-360, Sh. 2 M-360, Sh. 1 M-374 G E E B 4 5 5 R E E L F E C M AZ L WX A D P AT MZ AR L UC AL

_ _ _ _ Calculation For Diesel Generator 3 Loading Under Calc. No. 9389-46-19-1 SARGENT &8LUNDY Design Bases Accident Condition Rev. 1 jDate X ISafety-Related 1iNon-Safety-Related Page /lq,-5" of lClient CornEd 1Prepared by IDate I Project Dresden Station Unit 3 Reviewed by Date Proj. No. 9389-46 Equip. No. Approved by (Date 12E-3389 R M-41, Sh, 1 KK 12E-3393 F M-41, Sh. 2 E 12E-3397 H M-49 PP 12E-3398 C M-51 AE 12E-3420A P M-529 K In addition to the above listed drawings, any drawings listed in Table 1 or Table 2 are also considered as references for this calculation.

17.) GE Drawing 992C510AB, Dresden Core Spray Pump Motor (Attached).

18.) GE Drawing 992C510, Dresden LPCI Pump Motor (Attached).

19.) IEEE Standard 399-1980, Chapter 8, for determining motor starting voltage drop at the source when some running load is already present 20.) S & L Standard, ESI-253, Revision 12-6-91, Electrical Department instruction for preparation, review, and approval of electrical design calculations 21.) S & L Standard ESC-307, Revision 1-2-64, for checking voltage drop in starting ac motors 22.) Western Engine letter dated 1V19/87 to Mr. Wayne Hoan identifying the voltage dip curve applicable to Dresden and Quad Cities (Attached).

23.) Strip Charts (2) for Diesel Generator Surveillance Test: Dated December 10, 1992 and May 22, 1993 (Attached) 24.) Walkdown Data for Diesel Generator 3 dated April 15, 1994 (Attached).

25.) DIT DR-EAD-0001-00 regarding the Battery Charger and UPS Models (Attached).

26.) CCSW Pump Motor Walkdown information. (Attached) 27.) Dresden Unit 3 Electrical Load Monitoring System (ELMS) -AC, Calculation Number 7317-43-19-2, Revision 16, ELMS File: D3A4CONF.M30 28.) DIT DR-EPED-0863-00 (Attached).

29.) CIS-2: Tabulation for cables lengths (Applicable pages attached)

CALCULATION PAGE CALC NO. 9389-46-19-1 REVISION 002 PAGE NO. 14.0-6 30) Dresden Re-baselined Updated FSAR, Revision 0, Table 8.3-3; DG loading due to Loss of Offsite AC Power. (Attached)

31) Dresden Re-baselined Updated FSAR, Revision 0, Figure 8.3-5, DG loading under Accident and during Loss of Offsite AC Power. (Attached)

32) Dresden Station Fire Protection Reports -- Safe Shutdown Report dated July 1993, Table 3.1-1, DG Loading for Safe Shutdown. (Attached)

33) Dresden Station Procedure DGA-1 2, Rev. 55, "Partial or Complete Loss of Offsite Power" R2 34) S&L Calculation 9198-18-19-4, Rev. 003, 003A & 003B, entitled "Calculation for Dresden 3/11 Safety-Related Continuous Load Running/Starting Voltages" 35) ComEd Technical Information Manual Section TID-E/I&C-02, Rev. 0 36) Calculation for Evaluation of 3HP, 460V CCSW Motor Minimum Voltage Starting Requirements; Calculation Number 9215-99-19-1, Revision 1.37) 4160 Volt Switchgear Sepcification K-3141 (page 3-5 attached)38) Calculation for Single Line Impedance Diagrams for ELMS-AC; Calculation 7317-38-19-1, Revision 1.39) S & L Standard ESC-193, Revision 9-2-86, Page 5 for Determining Motor Starting Power Factor.40) Not Used 41) S & L Standard ESC-165, Revision 11-3-92, Electrical Engineering Standard for Power Plant Auxiliary Power System Design.42) Letter addressed to E. Guse from G.C. Mulick dated March 8, 1967 regarding EMD Inquiry No.66-708 (attached).

43) Dresden Station Procedure DOS-6600-04, Rev 5, (Pages 1 and 43 attached)44) S&L Calculation 8231-03-19-1, Rev 1, dated 2/20/90, entitled "LPCI/RHR Swing Bus (MCC 39-7/38-7)

Relay Settings" 45) S&L Report SL-4500, Volumes 1-3, entitled "Overcurrent Protective Device coordination study, Dresden Station -Unit and 3", dated 3/24/89 I CALCULATION PAGE CALC NO. 9389-46-19-1 REVISION 003 PAGE NO. 14.0-7 46) Dresden Original FSAR, 3/22/68 47) Memorandum from R.M. Dahlgren to C.A. Tobias dated December 30, 1994 entitled "Stroke Times for Motor Operated Valves" (Attached).

48) CHRON Letter 0302643 from E.J. Rowley to T. Reid dated 6/21/94 entitled "Dresden Units 2 and 3 Generic Letter 89-10 MOV Design Review ECCS MOV Stroke Time Changes." (Attached).

49) Dresden Station Procedure DOS 1600-18, Revision 15; (pages 1, 18, 21 & 23 attached)50) Dresden Station Procedure DOS 1600-5, Revision 4; (pages 1, 39, 44 attached)51) Dresden Station Procedure DOS 7500-2, Revision 11; (pages 1. 15 attached)52) Hand Calculation of CCSW Pump Locked Rotor Current (attached)

53) Comparison table of MOV measured stroke times vs. their acceptable limits (Attached).

54) Dresden Station Procedure DIS 7500-1, Revision 12 55) Calculation DRE04-001 9, Rev. 000B, "Auxiliary Power Analysis for Dresden Unit 3" 56) OPL-4, Rev. 003, GE LOCA Analysis Inputs for Dresden 2 & 3 and Quad Cities 1 & 2.57) MOV 2-1501-22A

& B Field Data Sheet dated 3/13/03, (Attachment R)58) GE correspondence, Containment Cooling Service Water Pumps -Motor Ratings, dated 2/25/71 (Attachment R)59) LPCI Pump 3D Replacement Motor Data-Sheet, DS2831204, Rev. 01 (Attachment R)60) LPCI Pump 3D Replacement Motor Test Report, SN 283003667, dated 06/03/03 (Attachment R)61) LPCI Pump 3D Replacement Motor Starting Characteristics, SC2831024, Rev. 00 (Attachment R)62) EC 342134, Replace LPCI Pump Motor 3-1502-D with an Equivalent Motor Supplied by the OEM.63) EC 358579, Rev 000, Controlled Document Changes Required to Support Closure of Operability Evaluation 05-005.64) Calculation DRE07-0003, Rev. 000, "EDG Loading for CCSW Pump -LOCA Long Term Cooling" 65) Calculation DRE07-0002, Rev. 000, "EDG Loading for LPCI Pump -LOCA Long Term Cooling" 66) Calculation DRE07-0001, Rev. 000, "EDG Loading for CS Pump -LOCA Long Term Cooling" R3 67) Calculation 8982-13-19-4, Rev. 001A, "Evaluation of 460V Diesel Generator Cooling Water Pump Minimum Starting Voltage: 68) EC 347744, Rev. 000, "Replace Diesel Generator Cooling Water Pump and Motor with New Pump and Motor- U3" CALCULATION PAGE CALC NO. 9389-46-19-1 REVISION 003 PAGE NO. 14.0-8(i..a)

69) TODI-07-003, Dated 2/1/07, "EDG Design Input Loading -RPS MG Set Unloaded" (Attachment R)70) Operability Evaluation 06-002, Rev. 002, Dwg. 12E-3531, Rev. AE 71) AIR No. 00583950, "UFSAR Figures 8.3-4, -5, -6, -7 EOG Load Profile Discrepancies" 72) A/R No. 00578451, "DG Frequency Tolerance Band not Reflected in Calculations" 73) Technical Specification Section SR 3.8.1.12, SR 3.8.1.16 & SR 3.8.1.19, Amendment 185/180 R3 74) UFSAR Table 8.3.1, Rev. 5 75) Cameron Hydraulic Data, Copyright 1995 by Ingersoll-Dresser Pump Co (Attachment R).76) Technical Specification Section SR 3.8.1.15, Amendment 185/180 77) EC 364072, Rev. 000, "Evaluate and Determine Power Factor and KVAR Range for Emergency Diesel Generator 24-Hour Endurance Test."".I .,

FFSARGENT&

LUNDY ENGINEERS Calculation For Diesel G Design Bases Acc X Safety-Related enerator 3 Loading Under Calc. No. 9389-46-19-1

ident Condition Rev. 0 6Date N on-Safety-Related Page Al of Prepared by Date Reviewed by Date Approved by Date Client CornEd Project Dresden Station Unit 3 Proj. No. 9389-46 Equip. No.Attachment A

r Automatically Turn On and Off Devices Under the Design Basis Accident Condition Dresden Station -Unit 3 C Bus Equipment Description/No.

Load Known Fact Assumption

/ Engineering Dwg. Rev Other Ref.No. Shed Judgement Ref. (P & ID)34-1 RX Bldg Cooling Water Pump Yes Trip due to core spray initiation.

Win not auto start., 12E-3397 H M-353 3B (3-3701 -B)34-1 RX Shutdown Cooling Water Yes Trip due to UV relay and will not auto start. 12E-3516 C M-353 Pump 3C 12E-3517 D (3-1002-C)

I -353 34-1 RX Cleanup Recirc. Pump 38 Yes Tip due to -UV relay and will not auto start. 12E-3520 J M-353 (3-1205-B) 34-1 RX Shutdown Cooling Pump 3B Yes Trip due to UV relay and will not auto start. 12E-3516 C M-353 (3-1002-8) 34-1 Core Spray Pump 3B No Starts 10 Sec. after UV relay resets. 12E-3429 L M-358 (3-1401-B) 34-1 LPCI Pump 3C No Starts 0 Sec. after UV relay resets. 12E-3436 K M-360 (3-1502-C)

Sh.3 Sh. 1 34-1 LPCI Pump 3D No Starts 5 Sec. after UV relay resets. 12E-3436 K M-360 (3-1502-D)

Sh.4 Sh.1 34-1 RX Bldg. Cooling Water Pump Yes Trip due to UV relay and wi ltnot auto start. 12E-3397 H M-20 2/3 (2/3-3701) 34-1 Bus Tie between 24-1 and 34-1 Yes N.O. and will not autoclose Operation of the crosstie is 12E-3346 AH manually activated at Sh. 1 Operation's discretion, and-assumed off for this calculation.

Calc. No. 9389-46-19-1 Rev. 0 Page Z,-Proj. No. 9389-46 Page I of 10 DRTBI1DG3.XLS Automatically Turn On and Off Devices Under the Design Basis Accident Condition Dresden Station -Unit 3 Bus Equipment Description/No.

Load Known Fact Assumption

/ Engineering Dwg. Rev Other Ref.No. Shed Judgement Ref. (P & ID)-- i = ii illi- ---34-1 480V Gatehouse MCC Yes Trip due to UV relay and will not auto load. -H 3656D 12-E-3346 AL Sh. 2 39 Fuel Pool Cooling Water Pump Yes Trip due to UV relay and will not auto start. 12E-3548 H M-362 38 (3-1902-B) 39 Recirc. M-G Sets Vent Fan 3B No Trip due to UV relay and will not restart due to the 12E- D (3-5701-B) presence of LOCA and UV signals 3420C 39 480 V Turb Bldg MCC 26-4 Yes Operates only by manual action. 12E- D Reserve Feed 3661H (2-7326-40) 39 South Turbine Bldg. Vent Fan 3B Yes Trip due to UV relay and will not restart due to the 12E- E (3-5702-B) presence of LOCA and UV signals 3387B 39 RX Bldg. Vent Fan 3B Yes Trip due to UV relay and will not auto start. 12E- E (3-5703-8) 3399A 39 RX Bldg. Exhaust Fan 3B Yes Trip due to UV relay and will not auto start. 12E- E (3-5704-B) 3399A 39 RX Bldg. Exhaust Fan 3C Yes Trip due to UV relay and will not auto start. 12E- E (3-5704-C) 3399A 39 120/240 VAC Uninterruptable No Starts operating at 0 Sec. 12E- G Power Supply Panel 903-63 3811B Calc. No. 9389-46-19-1 Rev. 0 Page 43 Proj. No. 9389-46 Page 2 of 10 DRTBI DG3.XLS (Table I Automatically Turn On and Off Devices Under the Design Basis Accident Condition Dresden Station -Unit 3 (~!Bus Equipment Description/No.

Load Known Fact Assumption

/ Engineering Dwg. Rev Other Ref.No. Shed Judgement Ref. (P & ID)39 Drywell Cooler Blower 3C, 3D, & Yes Trip due to core spray initiation and will not auto 12E-3393 F M-273 3E start.(3-5734-C, D, E)39- 480V MCC 39-3 Yes This MCC is load shed, no loads are energized for 12E-3374 U LOCA mitagation.

39 480V MCC 39-5 Yes This MCC is load shed, no loads are energized for 12E-3374 U LOCA mitagation.

39 480V MCC 39-6 Yes This MCC is load shed, no loads are energized for 12E-3374 U LOCA mitagation.

MCC Distribution Transformer Feed (9 No Will start operating at 0 Sec. 1 2E-3593 D 39-1 KVA)MCC Standby Liquid Control Pump 3B Yes Manually operated load. Not used in LOCA event. 12E-3460 W M-364 39-1 (3-1102B)

Sh.2 MCC Drywell & Torus Purge Exhaust Yes Will not operate due to high drywell pressure and 12E-3393 F M-529 39-1 Fan 3B low water level.(3-5708B)MCC Core Spray Outbd. Isol. Valve 3B No N.O. and interlock open with high drywell and low 12E-3431 A M-358 39-1 (3-1402-24B) water level. Sh.2 MCC Core Spray lnbd. Isol. Valve 3B No N.C. but interlock open with high drywell press or Assume to open concurrent 12-3431 A M-358 39-1 (3-1402-25B) low water level after UV relay resets. with Core Spray Pump, Sh.2 resulting in highest concurrent load. (Conservative)

Calc. No. 9389-46-19-1 Rev. 0 Page /91 Proj. No. 9389-46 Page 3 of 10 DRTB1DG3.K.LS 4A 411 Automatically Turn On and Off Devices Under the Design Basis Accident Condition Dresden Station -Unit 3 Bus Equipment Description/No, Load Known Fact Assumption

/ Engineering Dwg. Rev Other Ref.No. Shed Judgement Ref. (P & ID)MCC core SPray Pump Suction Valve No N.O. and interlock open with Core Spray initiation.

12E3432 P M-356 39-1 38 (3-1402-3B)

MCC RX Bldg. Emerg. Lighting No Starts at 1 min. Assume starting at 10 seconds 122E- T 39-1 for conservatism 3677C MCC CRD Hydraulic System Pressure Yes Manually operated valve. 12E-3416 L M-365 39-1 Cont. Valve 3A (3-0302- 8)MCC Core Spray Test Bypass Valve No N.C. and interlock dose on high dryweli pressure 12E-3433 K M-358 39-1 38 (3B-1402-48)

UMCC HPCI Aux. Coolant Pump No .....ý. L.... 12E-3531 P M-374 39-1 (3-2301-57) "o r, MCC LPCI Pump 3C Suction Valve No N.O. and interlock open with LPCI iniation.

12E-3440 P M-360 39-1 (3-1501-5C)

Sh.1 urr S r~t I t ALICf '. -. .-----I 9 39-1 MCC 39-1 MCC 39.-1 , ,.o QZ -2 IVIUniILUIJln Sample Pump 3B (3-Z400-B)

Drywell/Torus Differential Pressure Air Compressor 38 (3-8551-B)

Yes uperator has to turn switch HS5 to standby or analyze position considering this equip. Wail show starting at 10 min.12E-7555A E I---r es Wig not operate in auto mode.+12E-3372 L LPCI Dr well Spray Valve 3C No N.C. and interlock close with high Drywell pressure 12E-3440 "P M-360 3-1501-27B) and low RX level. Sh'i Calc. No. 938946-19-1 Rev. 3 Page 45 Proj. No. 938946 Page 4 of 10 ORTBIDG3.XLS C Automatically Turn On and Off Devices Under the Design Basis Accident Condition Dresden Station -Unit 3 Bus Equipment Descripbon/N Load Known Fact Assumption

/ Engineering Dwg. Rev Other Ref.No. Shed Judgement Ref. (P & ID)MCC LPCI Torus Ring Spray Valve 3D No N.C. and interlock close with high Drywell pressure 12E-3441 N M-360 39-1 (3-1501-19B) and low RX level. Sh.2 Sh.1 MCC LPCI Torus Ring Spray Valve 3C No N.C. and interlock close with high Drywell pressure 12E-3441 N M-360 39-1 (3-1501-18B) and low RX level. Sh.2 Sh.i MCC LPCI Torus Ring Spray Valve 3D No 'N.C. and interlock close with high Drywell pressure 12E-3441 N M-360 39-1 (3-1501-20B) and low RX level. Sh.1 Sh.1 MCC LPCI Torus Ring Spray Valve 3C No N.C. and interlock close with high Diywell pressure 12E-3441 N M-360 39-1 (3-1501-38B) and low RX level. Sh.1 Sh.1 MCC Closed Cool Water Drywell Yes Will not operate in auto mode. N.O. will remain 12E-3398 B M-353 39-1 Return Valve 3B open.(3-3706)MCC LPCI Header Crosstie Isol, Valve No N.O. and interlock open with switch on open 1 2E-3440 N M-360 39-1 3B position (with key removable).

Sh.1 (3-1501-32B)

MCC LPCI Heat Exchanger Bypass No N.O. and interlock open for 30 sec See description in Section 12E-3440 N M-360 39-1 Valve 31 VIII.B.3 Sh.1 1 (3-1501-11 B)MCC LPCI Pump Flow Bypass Valve No N.O. and remain open until flow is above set point Consider valve to operate 12E-3440 P M-360 39-1 3B and then It will close, concurrent with 1st LPCI pump Sh.1 (3-1501-13B) start.MCC East LPCI/CS Room Sump No Pump operates on level switch high Water level on core spray pump 12E- K M-358 39-1 Pump 3B will not go up and pump will not 3677E (3-2001-51 OB) operate.Calc. No. 9389-46-19-1 Rev. 0 Page tko Proj. No. 9389-46 Page 5 of 10 DRTB1DG3.ALS Table 1 Automatically Turn On and Off Devices Under the Design Basis Accident Condition Dresden Station -Unit 3 Bus Equipment Description/No.

Load Known Fact Assumption I Engineering Dwg. Rev Other Ref.No. Shed Judgement Ref. (P & ID)MCC West LPC/I/CS Room Sump No Pump operates on level switch high Water level on core spray pump 12E- K M-358 39-1 Pump 3A will not go up and pump will not 3677E (3-2001-511 A) operate.MCC Safety System Jockey Pump Yes Manually operated, will not start automatically 12E- Y 39-1 (3-1401-4) 3667E MCC LPCI Pump 3D Suction Valve No N.O. and interlock with LPCI initiation.

12E-3440 PI M-360 39-1 (3-1501-5D)

Sh.1 MCC Closed Cooling Water Drywell Yes Manually operated 12E-3398 B M-353 39-1 Supply Valve (3-3702)MCC Closed Cooling Water Header Yes Manually operated 12E-3398 B M-353 39-1 Isol. Valve (3-3701)MCC Contain Cooling Heat Exchanger No N.C. but interlock open when CCSW pump is not 12E-3440 N .M-360 39-1 Discharge Valve 3B operating.

After 10 min., the operator will open Sh.1 (3-1501-3B) when the CCSW begins operating.

MCC LPCIJCore Spray Pump Area TNo hermostatically controlled.

Assume start at t=0 sec 12E-3393 F 39-1 Cooling Unit 3B (3-5746-8)

MCC HPCI Turbine Inlet Isol. Vlv No N.O, but interlock close by reactor low pressure 12E-35291 W M-374 39-1 (3-2301-4) concurrent with LPCI initiation.

MCC Core-Spray Pump Recirc. Isol. No N.O. remain open for low flow but will close when Closes with Core Spray pump 12E-3433 K M-358 39-1 Valve 3B enough flow is established.

(3-1402-38B)

Calc. No. 9389-46-19-1 Rev. 0 Page 47 Proj. No. 9389-46 Page 6 of 10 DRTB1DG3.XLS Table I Automatically Turn On and Off Devices Under the Design Basis Accident Condition Dresden Station -Unit 3 N Bus Equipment Description/Noi Load Known Fact Assumption

/ Engineering Dwg. Rev Other Ref.No. Shed Judgement Ref. (P & ID)MCC HPCI Pump 3 Area Cooling Unit No Starts operating when MCC 39-1 has voltage. 12E-3393 F 39-1 (3-5747)MCC ACAD Air Compressor Unit No. Yes Manually Operated Application is as a post-LOCA 12E-7556 E 39-1 3-2501 device, assume on in last time period MCC LPCI Drywell Spray Valve 3D No N.C. and interlock closed with LPCI initiation.

' 12-3441 N M-360 39-1 (3-1501-28B)

Sh.3 Sh.1 MCC HPCI Oil Tank Heater No Consider that temp switch will 12E-3532 M 39-1 close and heater will operate at 0 Sec.MCC SBGT Air Heater No Starts operating at 0 Sec. B Train in Primary, A Train in 12E- M M-49 39-2 (2/3-B-7503)

Standby 2400B MCC 250V Battery Charger 2/3 No Starts operating at 0 Sec. 12E- C 39-2 (2/3-8350-2t3) 2389B MCC SBGT Fan Disch Damper 2/3B No N.C. but will open with PCIS initiation (operates at 0 B Train in Primary, A Train in 12E- S M-49 39-2 (2/3-7507B)

Sec.) Standby 2400A MCC SBGT Fan 213B No Starts operating with iniation on PCIS (starts at 0 B Train in Primary, A Train in 12E- M M-49.39-2 (2/3-B-7506)

Sec.) Standby 2400B MCC Turbine Room 3 Emerg. Lghting No Starts operating at 1 min Assume 10 second start for 12E- Z 39-2 (3-7902) conservatism 3678B Calc. No. 938946-19-1 Rev. 0 Page /Proj. No. 938946 Page 7 of 10 ORTBlQG3.Y,LS CI TILe I Automatically Turn On and Off Devices Under the Design Basis Accident Condition Dresden Station -Unit 3 C.Bus Equipment Description/No.

Load Known Fact Assumption

/ Engineering Dwg. Rev Other Ref.No. Shed Judgement Ref. (P & ID)MCC SBGT Sys. Inlet Damper 2/3B No N.C. but interlock open with high drywell and low B Train in Primary, A Train in' 12E- S M-49 39-2 (213-7505B)

RX pressure.

Standby 2400A MCC Contain Cooling SWP Cub. No This fan will be operating only when Containment 12E- N M-275 39-2 Cooler Fan 2 Cooling SWP C is operating (start at 10 min.) 3678A (3-5700-30C)

MCC Contain Cooling SWP Cub. No This fan will be operating only when Containment 12E- N M-275 39-2 Cooler Fan 1 Cooling SWP C is operating (start at 10 min.) 3678A (3-5700-30C)

MCC Contain Cooling SWP Cub. No This fan will be operating only when Containment 12E- N M-275 39-2 Cooler Fan 1 Cooling SWP C is operating (start at 10 min.) 36788 (3-5700-300)

MCC 125V Battery Charger 3 No Starts operating at 0 Sec. 12E-3389 N 39-2 (3-8300-3)

MCC Condensate Transfer Pump 3B Yes Wig not operate in auto mode. Assume in auto 12E-3370 J 39-2 (3-3319-8)

MCC DG Starling Air Compressor 38 No IStarti operating at 0 Sec. 12E- W M-173 39-2 (3-4611-B) 3350B MCC Contain Cooling SWP Cub. No This fan will be operating only when Containment 12E- T M-275 39-2 Cooler Fan 2 Cooling SWP C is operating (start at 10 min.) 36788 (3-5700-30D)

MCC SBGT Outside Air Damper 2/38 No N.O. Damper doses on high drywell press or RX 12E- S M-49 39-2 (2/3-7504B) low level. 2400A Calc. No. 9389-46-19-1 Rev. 0 Page A?Proj. No. 9389-46 Page 8 of 10 DRTB1DG3.XLS f" Table I Automatically Turn On and Off Devices Under the Design Basis Accident Condition Dresden Station -Unit 3 Bus Equipment Descripton/No.

Load 'Known Fact Assumption I Engineering Dwg. Rev Other Ref.No. Shed Judgement Ref. (P & ID)MCC RX Bldg. Vent SBGT Damper Yes Power cables disconnected.

12E- S M-49 39-2 21/3 2400A (3-7503) ---MCC DG Cooling Water Pump 3 No Starts operating at 0 Sec. 12E- W M-355 39-2 (3-3903) 3350B MCC DG Fuel Oil Transfer Pump 3 No Starts operating at 0 Sec. 12E- W M-41 39-2 (3-5203) 3350B Sh.2 MCC Protection M-G Set 38 No Will restart on restoration of bus voltage. 12E-3592 J 39-2, (3-8001-B)

MCC DG Ventilation Fan 3 No Starts operating at 0 Sec. 12E- W M-1297 39-2 (3-5790) 33508 MCC Recirc. Pump 3B Suction Valve Yes N.O. and remain open. 12E- R M-357 39-7 (3-0202-4B) 3420B Sh.2 MCC Recirc. Pump 38 Disch Valve No N.O. but interlock closed with LPCI initiation if 12E- R M-357 39-7 (3-0202-5B) selected by the LOOP selection logic. 3420B Sh.2 MCC LPCI Inboard Isol. Valve 3B No N.C. but interlock open or closed with LPCI initiation 12E- M M-360 39-7 (3-1501-22B) if selected by the LOOP selection logic. 34"1A Sh.1 MCC LPCI Outboard Isol Valve 3B No N.O. but interlock open or closed with LPCI Assume closes based on 12E-3441 N M-360 39-7 (3-1501-21 B) initiation if selected by the LOOP selection logic, scenario Sh. I Me, LPCl Inboard Isol. Valve 3A No N.C. but interlock open or closed with LPCI initiation Assume opens based on 12E- N M-360 38-7 (3-1501-22A) if selected by the LOOP selection logic, scenario 3441A Sh.1______Sh.4 Calc. No. 9389-46-19-1 Rev. 0 Page 141/O Proj. No. 9389-46 Page 9 of .10 DRTB1DG3,X.L9 Taole 1 Automatically Turn On and Off Devices Under the Design Basis Accident Condition Dresden Station -Unit 3 Bus Equipment Description/No.

Load Known Fact Assumption "Engineering Dwg. Rev Other Ref.No, Shed Judgement Ref. (P & ID)MCC Recirc. Pump 3A Suction Valve Yes N.O. and will remain open. 12E- P M-347 38-7 3A 3420A Sh.2 (3-202-4A)

MCC Recirc. Pump 3A Disch. Valve No N.O. but interlock open or closed with LPCI Assume doses based on 12E- P M-357 38-7 3A initiation if selected by the LOOP selection logic, scenario 3420A Sh.2 (3-202-5A)

MCC LPCI Outboard Isol. Valve 3A No N.O. but interlock open or closed with LPCI 12E-3441 N M-360 38-7 (3-1501-21A) initiation if selected by the LOOP selection logic. Sh. 1 N.O. -Normally Open N.C. -Normally Closed N/A -Not Available Calc. No. 9389-46-19-1 Rev. 0 Page Proj. No. 9389-46 Page 10 of 10 DRTB1DG3.XLS j SARGENT& LUNDY l I ENGINEERS Calculation For Diesel Generator 3 Loading Under Design Bases Accident Condition Sx Safety-Related Non-Safety-Related Calc. No. 9389-46-19-1 Rev. 0 Date Page 8' of Client ComEd Project Dresden Station Unit 3 Proj. No. 9389-46 Equip. No.Prepared by Date Reviewed by Date Approved by Date Attachment B

TABLE 2 AFFECTS OF VOLTAGE DIP PURPOSE The purpose of Table 2 is to determine the affects of an AC voltage dip, that is low enough to de-energize control circuits ie., contactors, relays, etc., has on the operation of the mechanical equipment.

METHOD Table 2 shows the results of Below is the explanation for Table 2 Column Description Equipment Description/No.

the review. The conclusion of Table 2 is shown in the analysis of data section.each column in Table 2.Explanation of What is Shown in the Column This column lists all of the loads connected to the DG buses.same list as shown in Table 1.It is the M2"n 0z 0rq 1A Z Load Shed All loads that are tripped off and interlocked off or require manual action to restart are considered load shed. Operating loads and loads with auto start capabilities that have power available that do not operate ( i.e. an MOV that Is N.O. and remains open) is considered not load shed.Will the voltage dip at 5 seconds, 10 seconds, and 10 minutes affect the equipments' operation The "affect" looked for is .that the control circuit per the referenced schematics is de-energized or energized by a voltage dip. If the circuit was not energized before the dip and/or the energized state of the circuit did not change due to a dip, the answer is no. If the energized state of the circuit changed, the answer is yes. -(Question

1) r ,LE 2 AFFECTS OF A VOLTAGE DIP Table 2 Column Description Will the equipment restart after the voltage recovery (Question 2)Will the equipment operate in an adverse mode due to a voltage dip (Question 3)Will the time delay in operation cause any adverse affect (Question 4)Explanation of What is Shown in the Column This question is to verify that matically after a voltage dip.considered.

DC control circuits dip. Circuits that have seal-in restart.equipment required is restarted auto-Only AC control circuits need to be will be unaffected by an AC voltage contacts are types that would not If the answer to Question I is yes, and to Question 2 is yes, then Question 3 has to be answered.

The "adverse modes" looked for are items like, valves moving in the wrong direction, time delay relays being reset by the dip causing equipment to operate for shorter or longer periods than required, etc.If the answer to Question I is yes, and 2 is yes, Question 4 has to be answered.

The time delay referred to is the one second it takes the DG to recover 0 above 80% after the start of a large motor. The adverse affects looked for are items like, could within one second the room temperature rise excessively if a cooler is de-energized, if a valve travel requires one more second to operate will its total travel time exceed design limits, etc.The "no" answers to this question are based on the following engineerin~g judgements:

a. Reference 53 provides a comparalson between allowable and measured and/or calculated valve stroke times for the valves In question.This shows that the addition of 2 seconds to the stroke time of any valve will not result In the total stroke time exceeding the maximum allowable stroke time.b. Based on Engineering Judgement.

2 second time delays In room coolers.pumps. etc. would not cause rooms, equipment.

etc. to overheat.

etc.U zc n Z OMr C PRev. Q. 38-TABLE 2 AFFECTS OF A VOLTAGE DIP (Table 2 Column Description Explanation of What is Shown in the Column c. Instrument bus loads may give erroneous readings for a fraction of a second due to momentary sharp voltage drop. But the instrument bus is designed with transfer switch, which takes about one second to transfer the loads. Therefore, the operators are familiar with the behavior of these loads during abnormal condition.

This will not require any special attention of the operators.

Drawing Reference Revision Other Reference This drawing shows the main schematic or wiring diagram for the control circuit reviewed.This is the revision number of the drawing referenced above.Other references used to understand the operation of control circuit may be listed here or see the main reference section of this calculation.

Mi z p LI 4:-U 0 ()0I 1:;-z a TABLE 2 AFFECTS OF VOLTAGE DIP Dresden Station -Unit 3 BuS Equipment Description/No.

' Woad Will the voltage dips @ 5 Will the equipment start Will the equipt operate in Will the time delay in Dwg Ref. Rev 0Other No. Shed sec, 10 sec, & 10 min, after voltage recovery?

adverse mode due to the operation cause any Rel.affect the equipment's voltage dips? adverse affect?operation?

34-1 RX Bldg. Cooling Water Pump 3B Yes' N'o N/A N/A N/A -H M-353 (3-3701-B) 34-1 RX Shutdown Cooling Water Pump Yes No N/A N/A N/A 12E-3516 C M-353 3C 12E-3517 D (3-1002-C) 34-1 RX Cleanup Recirc. Pump 3B Yes No N/A N/A N/A 12E-3520 J M-353 (3-1205-B) 34-1 RX Shutdown Cooling Pump 38 Yes No N/A N/A N/A 12E-3516 C M-353 (3-1002-B) 34-1 Core Spray Pump 38 No Yes, the pump might stop Yes, interlock relay No No 12E-3429 L M-358 (3-1401 -B) momentarily controlled by 125V DC 34-1 LPCI Pump 3C No Yes, the pump might stop Yes, interlock relay No No 12E-3436 K M-36M (3-1502-C) momentarily controlled by 125V DC Sh.3 Sh.1 34-1 LPCI Pump 3D No Yes, the pump might stop Yes, interlock relay No No 12E-3436 K M-360 (3-1502-D) momentarily controlled by 125V DC Sh.4 Sh.1 34-1 RX Bldg. Cooling Water Pump 2/3 Yes No N/A N/A N/A 12E-3397 H M-20 (2/3-3701)

.39 Fuel Pool Cooling Water Pump 3B Yes No N/A NIA N/A 12E-3548 H M-362 (3-1902-B) 39 Reclrc. M-G Sets Vent Fan35 Yes No. Interlocked off after No N/A N/A 12E3420 D (3-5701-B) trip C Calc. No, 9389-48.19-1 Rovivion 0 PAP No. 8-Pro!. No. 8389-46 aa1s9DT2G.I Page I of a ODRT82DG3.XLS (7ý1 TABLE 2 AFFECTS OF VOLTAGE DIP C Dresden Station -Unit 3 Bus Equipment Desciption/No.

Lod Will the-voltage dips @ 5 Will the eqipment start Will the equipt. operate in Will the time delay in Dwg. Ref. Rev Other No. Shed sec, 10 sec, & 10 min. after voltage recovery?

adverse mode due to the operation cause any Ref.affect the equipments voltage dips? adverse affect?operation?

39 480 V"Turb Bldg MCC 26-4 Reserve Yes No N/A N/A N/A 12E3661 D Feed H (2-7326-40) 39 South Turbine Bldg. Vent Fan 3B Yes No N/A N/A N/A 12E-(3-5702-B) 33878 39 RX Bldg. Vent Fan 38 Yes No N/A N/A N/A 12E- .(3-5703-B) 3399A 39 RX Bldg. Exhaust Fan 3B Yes No N/A N/A N/A 12E- E (3-5704-B) 3399A 39 RX Bldg. Exhaust Fan 3C Yes No NIA N/A N/A 12E- E (3-5704-C) 3399A 39 120/240 VAC Uninterruptable Power No No, UPS will be supplied Yes, UPS will return to AC No No 12E- G Supply Panel 903-63 by alternate (DC) source source with restoration of 3811B until adequate AC voltage adequate voltage is available 39 Drywell Cooler Blower 3C, 3D, & 3E Yes No N/A NIA NIA 12E-3393 F M-273 (3-5734-C, D, E)39 480V MCC 39-3 Yes No NIA N/A N/A 39-' --- 480V MCC 39-5 Yes No N/A N/A N/A 39 480V MCC3 3 Yes No N/A N/A N/A Calc. No. 9389-46-19-1 Revision 0 Page No. 66 Proj. No. 9389-46 Page 2 of 9 DRTB20G31.X8 TABLE 2 AFFECTS OF VOLTAGE DIP Dresden Station -Unit 3 Bus Equipment Descrption/No.

Load WIl the voltage ps 5 Wll the equipment start Will the equipt opete mi WiN the ' mrn delay In D ' Ref. Rev d'ow No. Shed sec, 10 se, & 10 mn. after vag recovery?

adverse mode due to the operation cause an Ref.affect the vola dips? adverse affect?operaboon?

MCC Distribution Transfore Feed No Yes might do-energiz Yes, no aux. relay No No 12E- AC 39-1 (9 KVA) mornentadly interlock 3677A MCC Standby Liquid Control Pump 38 Yes No NIA N/A NIA 12E3460 W M-364 39-1 (3-1102M)

Sh.2 MCC Drywall & Toru PurgO e Ehaust Fan- Ye No NIA N/A NIA 12E-3393 F M-620 39-1 3B (3-57088)MCC coeSpry Outbd. Is Valve 38 W INo, N.O. interlock open No not required .2E. 3431 A Wi5.39-1 (3-1402-248)

Viv. is not operating sh.2 MCC Core Spry lnbd. Ied Valve 3B No Yes mght Stop Yes Interlock relay No No, Incmareasd 12E-3431 A M-358 39-1 (3-1402-258)

Monentarily controlm d by 125V DC. opecruf bitim Sh.2 MCC Core Spray Pump Suction Valve 3B No No, N.O. ierl k open No not required NIA N/A 12E-3432 P M-358 39-1 (38,-1402-3)

w. i notopergon MCC RX Blid. e" .No Yes mght de-eneriz Yes Interlock relay No No 12E- K 39-1 ergize when voltage is 3877C MCC o;re S-pray Test Bypas Va"v 3B N4o No. N.C. & bfterlockedse, No. not required W/A N/A `12E-3433 K M358 39-1 (313-`1402-40) viv is not operating.

MCC H-P-CI Aux. COoolant Pump w ~ ~ ~ 4 No No 12E-3631 P M-374 39-11 (3-2301-57)

MCC LPCIPump 3C SuCo Vave No No, N.O. & interlock ope No, not required N/A N/A 12E-3440 P U-M-39-1 (3-1501-5C) vv is not operaftng S Caol. No. 9389846-19-1 Rsvivion 3 PwN. 87 po. No. &38" PaP 3 of 9 P'3T I2D .XlS TABLE 2 AFFECTS OF VOLTAGE DIP Dresden Station -Unit 3 CýBus Equipment Description/No.

Load Will the voltage dips @ 5 Will the equipment start Will the equipt operate in Will the time delay in Dwg. Ref. Rev Other No. Shed sec, 10 sac,& 10 min. after voltage recovery?

adverse mode due to the operation cause any Ref.affect the equipment's voltage dips? adverse affect?operation?

C Post LOCA H 2 & 0" Monitoring Yes No, pump will be operating Voltage does not dip beltW N/A N/A 12E- E 39-1 Sample Pump 3B only after 10 min. 70% after 10min. 7555A'MCC "Drywel/'Torwus Dlfferential Pressure Yes N/A NIA N/A N/A 12E-3372 L 39-1 Air Compressor 3B (3-8551-B)

MCC LPCI Drywell Spray Valve 3X No No, N.C. & interlock dose, No, not required No No 12E-3440 P M-360 3b-1 (3-1501-27B) vlv. is not operating.

Sh.1 MCC LPCI Torus Ring Spray Vatve 3D No No, N.C. & interlock close, No, not required No No 12E3441 N, M-360 39-1 (3-1501-198) vlv. is not operating.

Sh"I MCC LPCI Torus Ring Spray Valve 3C No No, N.C. & interlock close, No, not required No No 12E3441 N M-360 39-1 (3-1501-18B) vtv. is not operating.

ShI Sh.A MCC LPCI Torus Ring Spray Valve 3D No No, N.C. & interlock close, No, not required No No 1 2E3441 N M-360 39-1 (3-1501-208) vlv. is not operating.

Sh.2 Sh.1 MCC LPCi Torus Ring Spray Valve 3C No No, N.C. & interlock close, No, not required No No n12E3441 N M-380 39-1 (3-1501-38B) vlv. is not operating.

Sh.1 Sh.1 MaC Closed Cool Water Drywell Return Yes NIA No, not required N/A NIA 12E-3398 B M-353 39-1 Valve 3B (3-3706)MCC LPCI Header Crosstie iso".'Valve 3 No No, N.0. & interlock open No, not required N/A NIA 12E-3440 N M360 39-1 (3-1501-328) vlv is not operating.

.Sh.1& V"r I OrfI LiJ, 4 n., ...39-1 Calc. No. 9389-46-19-1 Revision 0 Pape No.Proi. No. 938"-4 t Exchanger Doypass valve 3B (3-1501-118)

NO NO, N.O. & interlock open.Valve is not operating when large motors are N/A N/A N/A 12E-3440 N M-360 Sh l J .______________

.1_____________I Page 4 of 9 DRTB2DG3,XLS TABLE 2 AFFECTS OF VOLTAGE DIP Dresden Station -Unit 3 C, Bus Equipment Description/No.

Load Will the voltage dips @5 Will the equipment start Wig the equipt operate in Will the time delay in Dwg. Ref. Rev Ott" No. Shed. sec, 10 sec, & 0 min. after voltage recovery?

adverse mode due to the operation cause any Ret.affect the equipment's voltage dips? adverse affect?operation?

MCC LPCI Pump Flow Bypass Valve 3B No No, N.O. & interlock open No, not required N/A N/A 12E-3440 N M-360 39-1 (3-150ir13B) vlv is not operating.

Sh.1 MCC East LPCI/CSkRoom Sump Pump yes NIA N/A N/A N/A 12E- K M-358 39-1 3B 3677E (3-2001-510B)

MCC West LPCI/CS Room Sump Pump Yes N/A N/A N/A NIA 12E- K M-358 39-1 3A 3677E (3-2001-511 A)MCC Saftey System Jockey Pump Yes N/A NIA NIA NIA 12E- Y 39-1 (3-1401-4) 3667E MCC' LPCI Pump 3D Suction Valve No No, N.O. & interlock open No, not required N/A N/A 12E-3440 P M-360 39-1 (3-1501-5D) vlv is not operating.

Sh.1 MCC Closed Cooling Water Drywell Yes NIA NIA NIA N/A 12E-3398 B M-353 39-1 Supply Valve (3-3702)MCC Closed Cooling Water Header Isol. Yes N/A N/A N/A N/A 12E-398 B M-353 39-1 Valve (3-3701)MCC Contain Cooling Heat Exchanger No No, N.O. & interlock'open No, not required N/A N/A 12E-3440 N M-360 39-1 Discharge Valve 3B vtv is not operating.

Sh.1 (3-1501-38)

MCC LPCIICore Spray Pump Area Cooaing -No Yes might stop Yes, interlock with No No 12E-3393 F 39-1 Unit 38 momentarily.

temperature switch only.(3-5746-B)

MCC HPCI Turbine Inlet Isol Valve No Yes might stop Yes, interlock relay No No,increased 12E-3529 W M-374 39-1 (3-2301-4) momentarily, energize with low RX operating time is pressure, steam line break within acceptable limit___________________etc.

___________

Calc. No, M39.48-19-1 Revisioni 0 Page W. 13ýPro 1.No. 9389-46 Pap 5 of 9 ORTB2DG3.XLS TABLE 2 AFFECTS OF VOLTAGE DIP Dresden Station -Unit 3 Bus Equipment Description/No.

Load Will the voltage dipTs @5" Will the equipment start Will the equipL operate in Will the time delay in Dwg. Ref. Rev Other No. Shed sec, 10 sec, & 10 min. after voltage recovery?

adverse mode due to the operation cause any Ref.affect the equipment's voltage dips? adverse affect?operation?

MCC Core Spray Pump Recirc. Isol. Valve No Yes might stop Yes interlock relay No No,increased 12E-3433 K M-358 39-1 3B momentarily.

controlled by 24V DC. operating time is (3-1402-388) within acceptable limit MCC HPCI Pump 3 Area Cooling Unit No Yes might stop Yes, interlock with No No 12E-3393 F 39-1 (3-5747) momentanl*-

temperature switch only.MCC ACAD Air Compressor Unit No. 3- No Yes might stop Yes, interlock with No No 1f2E-7556 E 1 2501 momentarily, pressure switch only.MCC HPCI Oil Tank Heater No Yes might stop Yes, interlock with No No 12E-3532 M 39-1 momentarily.

temperature switch only.MCC SBGT Air Heater No Yes, might stop Yes, interlock relay No No 12E- M M-49 39-2 (213-B-7503) momentarily energize by a flow switch 2400B MCC 250V Battery Charger 2/3 No Yes, might stop Yes no aux. relay interlock No No 12E- C-39-2 (2/3-8350-2/3) momentarily 23898 MCC SBGT Fan Disch Damper 2/38 No Yes, might stop Yes, interlock relay No Increased stroke time 12E- S M-49 39-2 (2J3-75078) momentarily energizes concurrently 2400A with LPCI initiation MCC SBGT Fan 2/3B No Yes, might stop Yes, interlock relay No increased stroke time 12E- M M-49 39-2 (2/3-B-7506) momentarily energizes concurrently 24001 with LPCI initiation MCC Turbine Room 3 Emerg. Lighting No Yes, might stop Yes, interlock relay No No 12E- T 39-2 momentarily energizes when voltage Is 2678B back.MCC SBGT Sys. Inlet Damper 213B No Yes, might stop Yes, intedock relay No Increased stroke time 12E- S' M-49 39-2 (2/3-7505B) momentarily energizes concurrently 2400A with LPCI initiation.

Cae. No. 9389-4&-19-1 Revision a Pap No. N 3 O94 Proj. No. 9389.486ae6o 0T26.Pago 6 of 9 DRTB2063.XLS TABLE 2 AFFECTS OF VOLTAGE DIP Dresden Station -Unit 3 Bus Equipment Description/No.

Load Will the voltage dips @ 5 Will the equipment start Will the equipt operate in Will the time delay in Dwg. Ref. Rev Other No. Shed sec, 10 sec, & 10 min. after voltage recovery?

adverse mode due to the operation cause any Ref.affect the equipment's voltage dips? adverse affect?operation?

MCC Contain Cooling SWP Cub. Cooler No No, fan will be operating N/A N/A N/A 12E- N M-275 39-2 Fan 2 only after the CCSWP C 3678A (3-5700-30C) is operating.

MCC Contain Cooling SWP Cub, Cooler No No, fan will be operating N/A N/A N/A 12E- N 39-2 Fan 1 only after the CCSWP C 3678A (3-5700-30C) is operating.-MiKC Contain Cooling SWP Cub. Cooler No No, fan will be operating N/A N/A N/A 12E- N M-275 39-2 Fan 1 only after the CCSWP C 36788 (3-5700-30D) is operating.

MCC 125V Battery Charger 3 No Yes, might stop Yes, no aux relay No No 12E-3389 N 39-2 (3-8300-3) momentarily interlock MCC Condensate Transfer Pump 3B Yes No N/A NIA N/A 12E-3370 J 39-2 (3-3319-B)

MCC DG Starfing Air Compressor 38 No Yes, might stop Yes interlock with No No 12E- W M-173 39-2 (3-4611 -B) momentarily pressure switch only. 3350B MCC Contain Cooling SWP Cub. Cooler No No, fan will be operating N/A N/A N/A 12E- T U-275 39-2 Fan 2 only after the CCSWP C 36788 (3-5700-30D) is operating.

MCC SBGT Outside Air damper 2/3B No Yes, might stop Yes, interlock relay No Increased stroke time 12E- S M-49 39-2 (2/3-7504B) momentarily energizes on low flow within acceptable 2400A limits MCC RX'Bldg. Vent SBGT Damper 2/3B Yes No N/A N/A N/A 12E- S M-49 39-2 (3-75038) 2400A MCO DG Cooling Water Pump 3 No Yes, might stop Yes, interlock relay No No 12E- W M-355 39-2 (3-3903) momentarily energizes when voltage is 33508 back.Calt. No. 938"&49 19-1 Revision 0 Page No. 81/Proj. No. 9389-46 Page 7 of 9 DRT82DG3ULS TABLE 2 AFFECTS OF VOLTAGE DIP Dresden Station -Unit 3 Bus Equipment Description/No.

Load Will the voltage dips @ 5 Will the equipment start Will the equipt operate in Will the time delay in Dwg. Ref. Rev. Other No. Shed sec, 10 sec, & 10 min. after voltage recovery?

adverse mode due to the operation cause any Ref.affect the equipment's voltage dips? adverse affect?operation?

MCC OG Fuel Oil Transfer Pump 3 No Yes, might stop Yes, starts operating at 0 No N/A 12E- W M41 39-2 (3-5203) momentarily sec. 3350B 81t2 MCC RXProtectionM-GSet3B No Yes, M-G set is a high NIA N/A N/A 12E-3592 J 39-2 inertia machine, designed to ride through voltage dips MCC DG Ventilation Fan 3 No Yes, might stop Yes, interlock relay No No 12E- W M-39-2 (3-5790) momentarily energizes when voltage Is 33508 1297 back.MCC Refueling Floor Jib Cranes No No.This crane will not No, not required N/A N/A 12E- K 39-7 (3-899) operate. 3622C MCC LPCI Outbd. Isol Valve 3B No No, valve will not operate. NIA N/A N/A 12E- M M-360 39-7 (3-1501-21B) 3441A Sh.1 MCC Recirc. Pump 38 Suction Valve Yes No N/A N/A N/A 12E- R M-357 39-7 (3-0202-4B) 3420B Sh.2 MCC Recirc. Pump 38 Disch Valve No No, valve will not operate. N/A N/A N/A 12E- R M-357 39-7 (3-0202-5B) 34208 Sh.2 MCC LPCI Inboard Isol. Valve 3B No Yes might stop Yes, interlock relay No No,increased 12E- M M-360 39-7 (3-1501-22B) momentarily, controlled by 125V DC. operating time within 3441A 811.1 acceptable limit MCC LPCI Outboard Isol Valve 3B No No N/A N/A NIA 12E- M M-360 39-7 (3-1501-21B) 3441A Sh. I MCC LPCI Inboard iaso. Valve 3A No No, N.O. & interlock open. No, not required NIA N/A 12E- N M-360 38-7 (3-1501-22A)

Vlv. is not operating.

3441A Sh.1 Sh.4 Calt. No. 9389-46-19-1 Revision 0 Pae No.Proj. No. 9389-46 Pape 8 of 8 DRTB2DG3.XLS TABLE 2 AFFECTS OF VOLTAGE DIP Dresden Station -Unit 3 Bus Equipment Description/No.

Load Wll the voltage dips @ 5 Will the equipment start Will the equipt operate in Will the time delay in Dwg. Ref. Rev Other No. Shed sec, 10 sec, & 10 min. after voltage recovery?

adverse mode due to the operation cause any Ref.affect the equipment's voltage dips? adverse affect?operation?

MCC Recirc. Pump 3A Suction Valve 3A Yes No N/A N/A N/A 12E- P M-357 38-7 (3-202-4A) 3420A Sh,2 MCC Recira. Pump 3A Disch, Valve 3A No Yes might stop Yes, interlock relay. No No, increased 12E- P M-357 38-7 (3-202-5A) momentarily.

controlled by 125V DC. operating time witin 3420A Sh.2 acceptable limit MCC LPCI Outboard Isol. Valve 3A No Yes might stop Yes, interlock relay. No No, increased 12E-3441 N M-360 38-7 (3-1501-21A) momentarily, controlled by 125V DC. operating time within Sh.3 Sh.1 acceptable limit.NC -Normally Closed NO -Normally Open For further explanation of this table see Flow Chart No. 2.Calc. No. 9389-46-19-1 Revision 0 Pap No. '5/3/0A/ -Ptoi. No. 9388.48 Palls9 of9 ORTB2IIO3.XLS Table 4 DG Auxiliaries and Other 480V Loads Starting 0 Seconds after Closing of DG Breaker Load No. Load Descripon Bus No. Rating Unit I Vrated I PPF% I Eff. % A FLC J LRC% / SPF% SKW SKVAR 3-902-63 ESS UPS Panel 39 From ETAP 50.5 37.1 120P208V Distribution Transformer 39-1 39-1 9 KVA 480 75 100 10.8 100 75 6.8 6.0 Post LOCA H2 and 02 Sample Monitoring Pump 3B 39-1 1 HP 460 80 75 1.6 625 79 6.1 468 3-2301-4 HPCI Turbine Inlet Isol. Valve 39-1 7.8 HP 460 78 .70 13.4 827 54 47.6 74.2 3-5747 HPCI Pump 3 Area Cooling.Unit 39-1 3 HP 460 85 80 4.1 625 68 14.0 15.1 HPCI Oil Tank Heater 39-1 9 KW 480 100 100 10.8 100 100 9.0 0.0 2/3-8350-2/3 250V DC Battery Charger 2/3 39-2 -From ETAP 1 66.1 58.0 2/3-B-7503 SBGT Air Heater 2/3B 39-2 30 KW 440 100 100 39.4 100 .100 30.0 0.0 213-75048 SBGT Outside Air Damper 213B 39-2 0.6 HP 440 80 75 1.0 625 I 83 3.9 2.6 2/3-7507B SBGT Fan Disch. Damper 2/3B 39-2 4.3 HP 440 85 80 6.2 625 68 20.0 21.6 2/3-B-7506 SBGT Fan 2/3B 39-2 20 HP 460 85 85 25.9 625 44 56.8 115.9 2/3-75058 SBGT Sn Inlet Damper 2/3B 39-2 1.8 HP 440 80 75 2.9 625 75 10.5 9.3 3-8300-3 l25V DC Battery Charger 3 39-2 From ETAP 34.1 30.6 3-4611-B DG Starting Air Compressor 3B 39-2 5 HP 460 85 80 6.9 625 58 19.9 27.9 3-3903 DG Cooling Water Pump 3 39-2 87 KW 460 835 100 i 313 40 .1.5 131 3 39555 3-5203 DG Fuel Oil Transfer Pump 3 39-2 1.5 HP 460 80 75 2.3 625 75 8.7 7.7 3-5790 DG Ventilation Fan 3 39-2 30 HP 440 85 85 40.6 625 42 81.3 175,7 3-8001-B Reactor Protection M-G Set 3B 39-2 25 HP 440 85 85 33.9 625 43 69.4 145.7 3-1501-22A LPCI Inbd Isol. Valve 3A 38-7 10.5 HP 460 85 83.78 13.8 826 43 39.1 82.0 3-202-5A Recirc. Pump 3A Disch. Valve 38-7 13 HP 460 85 85 16.8 775 49 51.0 90.7 3-150)1-21t B LPCI Outbd Isol. Valve 38 ...... 38-7 16.2 HP 1 460 1 85 90 1 19.8 663 49 1 51.3 91.3 TOTAL STARTING KW & KVAR Full Load Current (FLC) form HP = (HP x 746) / (1.732 x kV x PF x eff.)FLC from KW = KW / (1,732 x kV x PF x eff.)FLC from KVA = KVA / (1.732 x kV x eff.)R3 R3 I R3 Starting KW (SKW) = 1.732 x kV x LRC% x FLC x SPF Starting KVAR (SKVAR) = 1.732 x KV x LRC% x FLC x sin(acos(SPF))

Calculation No. 9389-46-19-1 Rev, 3 Attachment C Page C1 of C5 Table 4 DG Auxiliaries and Other 480V Loads Starting 0 Seconds after UV Relay Resets Lod o. Load Doscrj o-n Bus No. IRatina Unit IVrated IPF% IEff. % IFLC ILRC6 SPF% SKW SKVAR 13-1501-135 JLPCI Pump Flow Bypass Valve 38 39-1 1 0.6 HP 440 80 1 75 1 1.0 527 83 3.3 2.2 3-5746B LPCI/Core Spray Pump Area Cooling Unit 39-1 5 HP 460 85 80 6.9 625 58 19.9 27ý9 Full Load Current (FLC) form HP = (HP x 746) ((1.732 x kW x PF x eff.) TOTAL STARTING KW & KVAR 30 FLC from KW = KW / (1.732 x kV x PF x eff.)FLC from KVA = KVA1(1.732 x kV x eff.)Starting KW (SKW) = 1.732 x kV x LRC% x FLC x SPF Starting KVAR (SKVAR) = 1.732 x kV x LRC% x FLC x sin(acos(SPF))

I R2 Calculation No. 9389-46-19-1 Rev. 2 Attachment C Page C2 of C5 Table 4 DG Auxiliaries and Other 480V Loads Starting 10 Seconds after UV Relay Resets Load No. ILoad Description ITurbine Room 3 Emerg. Lighting 3-1401-258 ICore Spray Inbd Isol Valve 38 IRX Bldo. Emem!ihtn Bus No. Rating Unit Vrated PF% Eff. % FLC LRC% SPF% SKW SKVAR 39-2 13.68 KW, 480 90 100 18.3 100 90 13.7 6.6 39-1 3.9 HP 440 85 80 5.6 830 58 20.6 28.9 39-1 18.36 KVA 480 90 100 22.1 100 90 16.,5 8.0 39-1 0.6 HP 440 80 75 1.0 527 83 3.3 2.2 TOTAL STARTING KW &KVAR 54.1 45.7 3-1402-38B Core Spray Pump Recirc Isol. Valve 3B Full Load Current (FLC) form HP = (HP x 746) / (1.732 x kV x PF x eff.)FLC from KW = KW / (1.732 x kV x PF x eff.)FLC from KVA = KVA / (1.732 x kV x eff.)Starting KW (SKW) -1.732 x kV x LRC% x FLC x SPF Starting KVAR (SKVAR) = 1.732 x kV x LRC% x FLC x sin(acos(SPF))

I R2 Calculation No. 9389-46-19-1 Rev. 2 Attachment C Page C3 of CS Table 4 DG Auxiliaries and Other 480V Loads Starting at 10+ Minutes after UV Relay Resets (1st CCSW Pump)ILoad No. ILoad Description I Bus No, I Rating I Unit vrated I PF% I Eff. % I FLC I LRC% I SPF% I SKW SKVAR 3-1501-3B lContainment Cooling Heat Exchanger Discharge Valve 3B 39-1 1 0.33 HP 4W0 80 , 75 1 0.5 1 245 85 1 0.9 0.5 TOTAL STARTING KW & KVARJ 0.9 0.5* , ,t~ i=. -v %r -Xnr ji k1J (! .la:X V Xr1"X el.)FLC from KW KW /(1.732 x kV x PF x eff.)FLC from KVA = KVA /(1.732 X kV x eff.)Starting KW (SKW) = 1.732 X kV X LRC% X FLC x SPF Starting KVAR (SKVAR) = 1.732 x kV x LRC% x FLC x sin(acos(SPF))

IR2 Calculation No. 9389-46-19-1 Rev. 2 Attachment C Page C4 of C5 Table 4 DG Auxiliaries and Other 480V Loads Starting at 10++ Minutes after UV Relay Resets (2nd CCSW Pump)Lod no.ff~ff Load Descdption Contain Cooling SWP Cub. Cooler C Fan 2 Contain Cooling SWP Cub. Cooler C Fan I Contain Cooling SWP Cub. Cooler D Fan I Contain Cooling SWP Cub. Cooler D Fan 2 Bus No. Rating Unit VratedI PF% Eff. % FLC LRC% SPF% SKW SKVAR R2 39-2 3 HP 460 85 80 41 700 68 15.7 16.9 39-2 3 HP 460 85 80 4,1 700 68 15.7 16.9 39-2 3 HP 460 85 80 4.1 700 68 15.7 16.9 39-2 3 HP 460 85 80 4.1 700 68 15.7 16.9 TOTAL STARTING KW & KVAR 62.7 676 R2 3-5700-30D Full Load Current (FLC) form HP = (HP x 746) / (1,732 x kV x PF x eff.)FLC from KW = KW I (1.732 x kV x PF x eff.)FLC from KVA = KVA I (1.732 x kV x eft.)Starting KW (SKW) = 1.732 x kV x LRC% x FLC x SPF Starting KVAR (SKVAR) = 1.732 x kV x LRC% x FLC x sin(acos(SPF))

I R2 Calculation No. 9389-46-19-1 Rev, 2 Attachment C Page CS of C5 0"a z D Do (co FL W c"4 Co C 0 0 3 m'ii m z p 0 I.a ,IL>~ii;ICI 0 C6 CL S m OD oI Z Ii L. .0 G CL =~* 0 0 0 0.0 a)0D 0 0)oD CL .0 (0 S 0 0 0 I, 02.4 0 0.4 S 02.4 I 0 z co (CI (4)

Dresden Diesel Generator 3 LOCA & LOOP Conditions II N1111111=

11 I IN I I I I ON -------- -------- --------------

Legend.STANDBY DIESEL GENERATOR 4160V, 2600kW, 0.8PF NO NC BREAKER IS I REMAINS OPEN BREAKER MANUAL CLOSE @ iOMIN BREAKER CLOSE FOR DG LOAD-NORMALLY OPEN BREAKER-NORMALLY CLOSED BREAKER 4160V SWGR 34-1 4160V SWGR 33-1 UAT 31 RAT 32 NO 3401 NC 3t 3432 TRANSF# 39 Note: N.O. connection to MCC 264 not shown for clarity.3403 NO 480V SWGR 39 480V SWGR 38 385A NC NC Typical setup for Switchgear 30, 36, and 37 TRANSF NO MF NC T T MCC 38/39-7 480V SWGR (Non-Safety)

Calc. No. 9389-46-19-1 Rev. 1, Page D2 /Final Proj. No. 9389-46 Figure 1 ISARGENT&

LUNDY Calculation For Diesel Generator 3 Loading Under Design Bases Accident Condition X ISafety-Related 11 INon-Safety-Related Calc. No. 9389-46-19-1 Rev. 1 of"Page 5/ of Client CornEd Project Dresden Station Unit 3 Proj. No. 9389-46 Equip. No.Prepared by Date Reviewed by Date Approved by Date Attachment E

FIGURE 2 -DG AUXILIARIES AND OTHER 4kV AND 480V LOADS Catc. No. 9389-46-19-1, Rev.3 PageNo. E2-/F/1,1.

Proj. No. 9389-46 Emergency Diesel 3 Powers Unit 3 Loads (0) Os 5s 10S 11- rain 10+ rain 10++ nin Bus Load No. Load Description No.3-1401-B Core Spray Pump 3B 34-1 3-1502-C -LPCI Pump 3C 34-1 3-1502-D LPCI Pump 3D 34-1 Containment Cooling SWP #3C 34"_ Containment Cooling SWP #3D 34 3-903-63 Essential Service Uniterruptable Power Supply Panel 39 120/208V Distribution Transt. 39-1 39-1 3-1402-251 Core Spray Inbd. Isol. VIv. 38 39-1 RX Bldg .Emerg.. Lihting3-RX Post LOCA H2 And 02 Monitoring Sample Pump 3B 39-1 3-1501-138 LPCI Pump Flow Bypass Valve 3B 39-1 Contain Cooling Heat Exchanger 3-1 501-3B Discharge Valve 3B 39-1 LPCI I Core Spray Pump Area Cooling 3-5746B Unit 38 39-1 3-2301-4 HPCI Turbine Inlet Isol. Vlv 39-1 3-;, '.1-38B Core Spray Pump Recirc. Isol. Valve 39-1 3-u.:,7 HPCI Pump 3 Area Coolin Unit 39-1 HPCI Oil Tank Heater 39-1 2/3-9350-2/3 250 VDC Battery Charger 2/3 39-2 2/3-7503B SBGT Air Heater 2/3B 39-2 2/3-7504B SBGT Outside Air Damper 2/36 39-2 2/3-7507B SBGT Fan Disch. Damper 2/3B 39-2 2/3B-7506 SBGT Fan 2/38 39-2 2/3-7505B SBGT Sys. Inlet Damper 2/3B 39-2 3-7902 Turbine Room 3 Emerg. Lighting 39-2 3-5700-30C Cnmt. Cooling SWP Cub. Cooler C Fan 2 39-2 3-5700-30C Cnmt. Cooling SWP Cub. Cooler C Fan 1 39-2 3-5700-30D Cnmt. Cooling SWP Cub. Cooler D Fan 1 39-2 3-5700-30D Cnmt. Cooling SWP Cub. Cooler D Fan 2 39-2 3-8300-3 125 VDC Battery Charger 3 39-2 3-5319-8 DG Starting Air Compressor 3B 39-2 3-3903 DG Cooling Water Pump 3 39-2 3-5203 DG Fuel Oil Transfer Pump 3 39-2 ,3-5790 DG Ventilation Fan 3 39-2 3-8001-B Reactor Protection M-G Set 38 39-2 3-1501-22A LPCI Inbd. Isol. Valve 3A 38-7-.e - -11I-IIIaIII-'---i- ---- --------------a n a--- ------- aHH III-H ---HIlll-----I --- -IIIIII----I~ll-------I 19-~3 3- -2185A-218 Recirc. Pumo 3A Disch Valve 38-7 LPCI Outbd. Isol. Valve 38 3?-7I'0s) -0 seconds after closing of DG Breaker)s -0 seconds after UV relay resets 3s -5 seconds after UV relay resets IOs -10 seconds after UV relay resets 10- min -all loads that automatically stop before 10 minutes are shown off 10+ min -CCSW Pump is started with it auxiliaries 10++ min -CCSW Pump is running and other loads starting after 10 minutes are shown here^^ýM A MA ý1 ^

Attachment F DG Unit 3 Division II ETAP Output Reports -Nominal Voltage Scenario DG3_Bkr_Cl DG3_UV_Reset DG3_T=5sec DG3_T=10sec DG3_T=10-min DG3_T= 1 O+min DG3_T=1O++m DG3_CR HVAC Page W 1 s F2-F 15 Fl 6-F29 F30-F44 F45-F59 F60-F73 F74-F87 F88-.FlO1 F102-FI 15 I Calculation:

9389-46-19-1

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F Revision:

003 Page F1 of F115

.)jcct: Dresden Unit3 Location:

OTI Contract:

123 Engineer:

OTI Filename:

DREUnit3_0005 ETAP s. 5..0N Study Case: DG 0_2CSW Page: 8 Date: 03-21-2007 SN: WASHTNGRPN Revision:

Base Config.: DG3_BkrCI Converted from ELMS PLUS Diesel Generator connected using nominal voltage, Time period is less than 10 minutes into the event.LOAD FLOW REPORT Bus Voltage Generation Load Load Flow XFMR ID kV kV Ang. MW Mvar MW Mar ID MW Mv-ar Amp % PF % Tap 3-903-63 ESS UPS PNL 0.480 0,480 -1,5 0 0 0.050 0.037 480V SWGR 39 -0.050 -0.037 75.4 80.5 4KV SWGR 34-1 4,160 4.158 0.0 0 0 0 0 HIGH SIDE OF XFMR 39 0,392 01293 67,9 80,1 DO 3 TERMINAL -0.392 -0.293 67.9 80.1 125V DC CHGR 3 0.480 0.454 -0.3 0 0 0.034 0.027 480V MCC 39-2 -0.034 .0.027 55,0 78.6 250V DC CHGR 2/3 0.480 0.455 -0.7 0 0 0.066 0.052 480V MCC 39-2 -0.066 -0.052 106.6 78.7 480V MCC 38-7 0.480 0.478 -1.5 0 0 0.021 0.013 480V MCC 39-7 .0.021 .0013 29.8 85.4 480V MCC 39-1 0.480 0.479 -3.5 0 0 0.027 0,014 480V SWGR 39 -0.027 -0.014 36,5 88.3 480V MCC 39-2 0.480 0.471 -1,7 0 0 0.168 0.119 125V DC CHGR 3 0.036 0,027 55.0 80.1 25OV DC CHGR 211 0.069 0.053 106.6 79.7 480V SWGR 39 -0.273 -0.198 413.7 80.9.480V MCC 39-7 0.480 0.479 -I.5 0 0 0.013 0.008 480V MCC 38.7 0.021 0,013 29.8 85.4 480V SWOR 39 -0.035 -0.021 48.9 85.2 480V SWGR 39 0.480 0.480 -3.5 0 0 0 0 480V MCC 39-7 0A035 0.021 48.9 85.3 480V MCC 39,-2 0.278 0.203 413,7 80.7 3-903-63 ESS UPS PNL 0.050 0.037 75.4 80.5 480V MCC 39-1 0.027 0.014 36.5 88.1 HIGH SIDE OF XFMR 39 -0.390 -0.276 574.1 81.6"X 3 TERMINAL 4.160 4.160 0.0 0.392 0.293 0 0 4KV SWGR 34-1 0.392 0.293 67.9 80.1 HIGH SIDE OF XFMR 39 4,160 4.157 0.0 0 0 0 0 4KV SWGR 34-1 -0.392 -0.293 67.9 80.1 480V SWGR 39 0.392 0.293 67.9 80.1 -2.500* Indicates a voltage regulated bus ( voltage controlled or swing type machine connected to it)I indicates a bus with a load misaintch of more than 0.1 MVA Calculation:

9389-46-19-1

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F Revision:

003 Page F9 of F115 ETAP/ P.:.rojcct:

Dresden Unit3 Location:

OTI Contract:

123 Engineer:

OTI Filename:

DRE-Unit3_0005 Page: 8 Date: 03-21-2007 SN: WASHTNGRPN Revision:

Base Config.: DG3JUVReset Study Case: DG 0_CCSW Converted from ELMS PLUS Diesel Generator connected using nominal voltage, Time period is less than 10 minutes into the event.LOAD FLOW REPORT Bus Voltage Generation Load ID LV kV Ang. MvtW MAvar MW Nivar ID Load Flow XFMR MW Mvar Amp % PF % Tap 3-903-63 ESS UPS PNL 4KV SWGR 34-1 125V DC CHGR 3 25OV DC CHGR 2/3 480V MCC 38-7 480V MCC 39-1 480V MCC 39-2 480V MCC 39-7 480V SWGR 39 0.480 0.480 -1.6 4.160 4,155 0.0 0.480 0.454 -0.3 0.480 0.454 -0.8 0.480 0.478 -3.5 0,480 0.479 -.5 0,480 0.470 .3.7 0.480 0.478 -3.5 0.480 0.480 -1.6 0 0 0 0.050 0.037 480V SWOR 39 0 0.521 0.252 HIGH SIDE OF XFMR 39 DG 3 TERMINAL 0 0.034 0.027 480V MCC 39-2 0 0.066 0.052 480V MCC 39-2 0 0,021 0.013 480V MCC 39-7 0 0 0 0 0 0.032 0.017 480V SWGR 39 0 0 0.168 0.119 125V DC CHGR 3 250V DC CHGR 2/3 480V SWGR 39 0 0 0.013 0.008 480V MCC 38-7 480V SWGR 39 0 0 0 .0 480V MCC 39-7 480V MCC 39-2 3-903-63 ESS UPS PNL 480V MCC 39-1 HIGH SIDE OF XFMR 39 9 0,550 0 0 4KV SWGR 34-1 0 0 0 0 4KVSWGR34-1 480V SWGR 39-0.050 -0,037 0.397 0,296-0.918 -0.549-0.034 -0.027-0.066 -0.052-0.021 -0.013-0.032 .0017 0.036 0.027 0.069 0.052.0,273 -0.198 0.021 0.013-0.035 -0.021 0.035 0.021 0.278 0.203 0.050 0.037 0.032 0.017 4).395 -0279 0.919 0.550-0.397 -0.296 0.397 0.296 75.4 80.6 68.8 80.1 148.6 85.8 55.0 78.7 106.6 78,8 29.9 85.4 43.5 87.5 55.0 80.2 106.6 79.8 413.9 80.9 29.9 85.4 49.0 85.2 49,0 85.3 413.9 80.7 ,5.4 8906 43.5 87.5 5813 81.7 148.6 85.8 68.8 80.1 68.8 0.31 .2.500 D IG 3 "FERMN.NAL 4,160 4.160 0.0 0.91 HIGH SIDE OF XFMR 39 4.160 4.155 0.0 Indicates a voltage regulated bus ( voltage controlled or swing type machine connected to it)hndicat,:

a bus with a load mismatch of more than 0.1 MVA Calculation:

9389-46-19-1

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E Revision:

003 Page F23 of F115 Project: Dresden Unit3 Location:

OTI Contract:

123 Engineer:

OT0 Filename:

DREUnit3_0005 ETAP 5,5.ON Page: 8 Date: 03-21-2007 SN: WASHTNGRPN Revision:

Base Config.: DG3_T=5sec Study Case: DGO_CCSW Converted from ELMS PLUS Diesel Generator connected using nominal voltage, Time period is less than 10 minutes into the event.LOAD FLOW REPORT Bus Voltase Generation Load Load Flow XFMR ID kV kV Ang. MW Mvar MW Mvar ID MW Mvar Amp % PF % Tap 3-903-63 ESS UPS PNL 0.480 0.479 -1.6 0 0 0.050 0.037 480V SWGR 39 -0.050 037 75.4 80.7 4KV SWOR 34-I 4.160 4,153 -0.1 0 0 1.014 0.511 HIGH SIDE OF XFMR 39 0.397 0.296 68.8 80.1 DG 3 TERMINAL -1.411 -0.807 226.0 86.8 125V DC CHGR 3 0.480 0.453 -0.3 0 0 0.034 , 0.027 480V MCC 39-2 -0.034 -0.027 55,0 78.7 250V DC CHGR 2/3 0.480 0.454 -0.8 0 0 0.066 0.052 480VMCC 39-2 -0.066 -0052 106,6 78.8 480V MCC 38-7 0.480 0.478 -1.6 0 0 0.021 0.013 480V MCC 39-7 -0,021 -0.013 29.9 85.4 480V MCC 39-1 0.480 0.478 -1,6 0 0 0.032 0.017 480V SWGR 39 -0.032 -0.017 43.5 87.5 480V MCC 39-2 0.480 0.470 -1.7 0 0 0.168 0,119 125V DC CHGR 3 0.036 0,027 55.0 80.2 250V DC CHGR 2'3 480V SWOR 39 1.I80V MCC 39-7 0.480 0.478 -1.6 0 0 0.013 0.008 480V MCC 38-7 480V SWGR 39 480V SWGR 39 0.480 0.479 -2.6 0 0 0 0 480V MCC 39-7 480V MCC 39-2 3-903-63 ESS UPS PNL 480V MCC 39-1 HIGH SIDE OF XFMR 39* 0 3'TERMINAl, 4.160 4.160 0.0 1.413 0.810 0 0 4KV SWGR 34.1 HIGH SIDE OF XFMR 39 4.160 4.152 -0.1 0 0 0 0 4KV SWGR 34-1 480V SWGR 39 0.069 0.052 206.6 79.8-0.273 -0.198 414.1 80.9 0.021 0.013 29.9 85.4-0.035 -0.021 49.0 85.2 0.035 0.021 49.0 85.3 0.278 0.203 414.2 80.8 0.050 0.037 75.4 80.6 0.032 0.017 43.5 87.5-0.395 -0.279 581.5 81.7 1.413 0.810 226.0 86,8-0,397 -0.296 68.8 80.1 0,397 0.296 68.8 80.2 -2,500* Indicates a voltage regulated bus ( voltage controlled or swing type nmchine connected to it)i Indicates a bus with a load mismatch of more than 0, 2 MVA Calculation:

9389-46-19-1

Attachment:

-.F Revision:

003 Page F37 of F115 Ject: Dresden Unit3-4:ocation:

OTI Contract:

123 Enginier:

OTI Filename:

DREUnit3_0005 ETAP 5.5.ON Study Case: DG_0_CCSW Page: 8 Date: 03-21-2007 SN: WASHTNGRPN Revision:

Base Config: DG3 T=i 0sec Converted from ELMS PLUS Diesel Generator connected using nominal voltage, Time period is less than 10 minutes into the event.LOAD FLOW REPORT Bus Voltage Generation Load Load Flow XFMR ID kV kV Ang. MW Mvar MW M var ID MW Mvar Amp %PF % Tap 3-903-63 ESS UPS PNL 4KV SWGR 34-1 125V DC CHGR 3 250V DC CHGR 2/3 480V MCC 38-7 480V MCC 39-1 480V MCC 39-2.30V MCC 39-7 480V SWGR 39 0.480 0.478 -1.8 4.160 4,149 -0.1 0.480 0.452 -0.5 0.480 0,452 -1.0 0.480 0.476 -L,7 0.480 0.476 -1.8 0.480 0.468 -1.9 0.480 0.477 -1.7 0.480 0.478 -1.8 0 0 0.050 0.037 480V SWGR 39 0 0 1,724 0,811 HIGH SIDE OF XFMR 39 DO 3 TERMINAL 0 0 0.034 0.026 480V MCC 39-2 0 0 0.066 0.051 480V MCC 39-2 0 0 0.021 0.013 480V MCC 39.7 0 0 0,054 0.029 480V SWGR 39 0 0 0.180 0.2 125V DCS CHGR 3 250V DC CHGR 213 480V SWGR 39 0 0 0.013 0,008 480V MCC 38-7 480V SWGR 39 0 0 0 0 480V MCC 39-7 480V MCC 39-2 3-903-63 ESS UPS PNL 480V MCC 39-1 HIGH SIDE OF XFMR 39 61 1.134 0 0 4KV SWGR 34-I 0 0 0 0 4KV SWGR34-I 480V SWGR 39-0.050 -0.037 75.4 80.8 0,433 0,317-2.157 -1.128-0.034 -0.026-0-066 -0.051-0.021 -0.013-0,054 -0.029 0.036 0.026 0,069 0.052-0.286 -0.204 0021 0.013-0.035 -0,021 0.035 0.021 0,291 0.209 0.050 0.037 0.054 0.029-0,431 -0.296 2.161 1.134-0.433 -0.317 0.433 0.317 74,7 80.7 338.8 88.6 55,0 79.0 106.7 79.0 30.0 85.4 74,6 88.1 55.0 80.5 106,7 80.0 432.4 81.4 30.0 85.4 49.2 85.3 49.2 85.3 432,4 81.2 75.4 80.8 74.6 88.1 630.9 82.4 338.8 88,5 74.7 80.7 74.7 80.7 -2.500 0 (3G 3 TERMINAL 4.160 4.160 0.0 2.16 HIGH SIDE OF XFMR 39 4.160 4.149 -0.1* Indicates a, voltage regulated bus ( voltage controlled or swing type machine connected to it)4 Indicates a bus with a load mismatch of more than 0. I MVA Calculation.

9389-46-19-1

Attachment:

F Revision:

003 Page F52 of F115

".ject: Dresden Unit3 LCocation:

OTI Contraci:

123 Engineer.

OTI Filenanie:

DREUnit3_0005 ETAP 5.SON Study Case: DG_0_CCSW Page: 8 Date: 03-21-2007 SN: WASHTNGRPN Revision:

Base Config.: DG3_T=10-m Converted from ELMS PLUS Diesel Generator connected using nominal voltage, Time period is less than 10 minutes into the event.LOAD FLOW REPORT Bus Voltage Generation Load Load Flow XFMR ID kV kV Ang. MW Mvar MW Mvar ID MW Mvar Amp % PF % Tap 3-903-63 ESS UPS PNL 4KV SWGR 34-1 125V DC CHGR 3 250V DC CHGR 2/3 480V MCC 38-7 480V MCC 39-1 480V MCC 39.2 480V MCC 39-7 480V SWGR 39 0.480 0.480 -1.5 4.160 4.149 -0.1 0.480 0.453 -0.3 0,480 0.454 .-0.8 0.480 0.480 -1.5 0.480 0.478 -1.5 0.480 0.470 -0.7 0,480 0.480 -1.5 0,480 0.480 -1.5 0 0 0.050 0.037 480V SWGR 39 0 0 1724 0.811 HIGH SIDE OF XFMR 39 DO 3 TERMINAL 0 0 0.034 0.027 480V MCC 39-2 0 0 0.066 0.052 480V MCC 39-2 0 0 0 0 480V MCC 39-7 0 0 0,041 0.019 480V SWGR 39 0 0 0.174 0,121 125V DC CHGR 3 250V DC CHGR 2/3 480V SWGR 39 0 0 0 0 480V MCC 38-7 480V SWGR 39 0 0 0 0 480V MCC 39-7-0.050 -0.037 75.4 80.6 0.378 0.277-2.103 -1.089-0.034 -0.027-0.066 -0.052 0.000 0.000-0.041 -0.019 0.036 0.027 0.069 0.052-0.279 -0.200 0.000 0.000 0.000 0.000 0.000 0,000 0.285 0.205 0,050 0.037 0.041 0.019-0.376 -0,262 2.106 1.095-0.378 -0,277 0.378 0.277 65.3 80,6 329.4 88.8 55.0 78.7 106.6 78.8 0,0 0,0 54.9 90.5 35.0 80.2 106.6 79,8 422.1 81.3 0.0 0.0 0,0 0.0 0.0 0,0 422.1 81.1 75.4 80.6 54.9 90.5 551.5 82.1 329.4 88.7 65.3 80.6 653 80.6 -2.500 480V MCC 39-2 3.903-63 ESS UPS PNL 480V MCC 39-I HIGH SIDE OF X'.MR 39 0 4KV SWGR 34-1 0 4KVSWGR 34-1 480V SWGR 39 tXD 3TFRMINAI, 4.160 4.160 0.0 2.106 1.095 HIGH SIDE OF XFMR 39 4,160 4.149 -0.1 0 0 0 0* Indicates a voltage regulated bus ( voltage controlled or swing type machine connected to it)Indicates a bus with a load mismatch of more than 0.1 MVA Calculation:

9389-46-19-1

Attachment:

F Revision:

003 Page F67 of F115 S ject: Dresden Unil3"Location:

OTI Contract:

123 Engineer:

OTI Filename:

DREUnit3_0005 ETAP 5.5,0N Page: 8 Date: 03-21-2007 SN: WASHTNGRPN Revision:

Base Config.: DG3_T=[0-+m Study Case: DG_I_CCSW Converted from ELMS PLUS Diesel Generator connected using nominal voltage, Time period is Ia mrin or greater into the event, I CCSW pump.LOAD FLOW REPORT Bus Voltage Generation Load Load Flow XFMR ID kV kV Ang. MW Mvar MW Mvar ID MW. Mvar Amp % PF % Tap 3-903-63 ESS UPS PNL 4KV SWGR 34 4KV SWOR 34-I 125V DC CHGR 3 250V DC CHGR 23 480V MCC 38-7 480V MCC 39-1 t8OV MCC 39-2 480V MCC 39.7 480V SWGR 39 0.480 0,480 -1.6 4.160 4.146 -0.1 4.160 4.147 -0.1 0.480 0.453 -0.3 0.480 0,454 -0.8 0.480 0A480 -1.6 0.480 0.478 -1.6 0,480 0.470 -L.7 0.480 0.480 -1.6 0A480 0,480 -1.6 0 0 0.050 0.037 480V SWGR 39 0 0 0 0 0 0 0 0.477 0.212 4KV SWOR 34-1 0 1,702 0.804 HIGH SIDE OF XFMR 39 4KV SWGR 34 DO 3 TERMINAL 0 0.034 0.027 480V MCC 39-2 0 0.066 0.052 480V MCC 39-2 0 0 0 480V MCC 39-7 0 0.041 0.020 480V SWGR 39 0 0 0,174 0.121 125V DCCHGR 3 250V DC CHGR 2/3 480V SWGR 39 0 0 0 0 480V MCC 38-7.480V SWGR 39 0 0 0 0 480V MCC 39-7 480V MCC 39-2 3-903-63 ESS UPS PNL 480V MCC 39-1-0.050 -0.037 75.4 80.6-0.477 -0.212 72.7 91.4 0.379 0.278 65.3 80.6 0.477 0.213 72.7 91.3-2.557 -1.294 399.0 89.2-0.034 -0,027 55.0 78.8-0.066 -0.052 106.6 78.8 0.000 0.000 0.0 0.0-0.041 -0.020 55.4 90.4 0.036 0.027 55.0 80.2 0.069 0.052 106.6 79.8-0.279 -0.200 422.2 81.3 0.000 0.000 0.0 0.0 0.000 0.000 0.0 0.0 0.000 0.000 0.0 0,0 0.285 0.205 422.2 81.1 0,050 0.037 75,4 80.6 0.042 0.020 55.4 90.4-0,377 -0.262 552.A 82.1 2.562 1.303 399.0 89.1-0.378 -0.278 65.3 80.6 0.378 0.278 65.3 80.6 -2.500* DO 3 TERMINAL 4.160 4.160 0.0 2,562 1.303 HIGH SIDE OF XFMR 39 4.160 '4.147 -0.1 0 0 0 0 HIGH SIDE OF XFMR 39 0 4KV SWGR 34-1 0 4KV SWGR 34-1 480V SWOR 39 indicates a voltage regulated bus ( voltage controlled or swing type machine connected to it)indicates a bus with a load mismatch of more than 0.1 MVA Calculation:

9389-46-19-1

Attachment:

F Revision:

003 Page F81 of F115 "roject: Dresden Unit3 ocation: OTI Contract:

123 Engineer:

OTi Filename:

DREUnit3 0005 ETAP 5.5.0N Study Case: DG_2_CCSW Page: 8 Dale: 03-21-2007 SN: WASHTNGRPN Revision:

Base Config.: DG3 Tý10++m Convened from ELMS PLUS Diesel Generator connected using nominal voltage, Time period is 10 min or greater into the event, 2 CCSW pumps.Bus Voltage .Generation Load ID kV kV Ang. MW Mvar MW Mvar Load Flow XFMR ID MW Mvar Amp % PF % Tap 3-903-63 ESS UPS PNL 4KV SWGR 34 4KV SWGR 34-1 125V DC CHGR 3 250V DC CHGR 2/3 480V MCC 38-7 480V MCC 39-1 480V MCC 39-2 480V MCC 39-7 480V SWGR 39 0.480 0.479 -1.6 4.160 4.145 -0.1 4.160 4.148 -0.1 0.480 0.453 -0.4 0.480 0,453 -0.9 0.480 0.479 -1,6 0.480 0.478 -1.6 0.480 0.469 -1.8 0.480 0.479 -I.6 0.480 0.479 -1.6 0 0 0 0 0 0 0 0 0 0 0 0.050 0.037 480V SWGR 39 0 0.771 0.395 4KV SWGR 34-1 0 1.219 0.549 HIGH SIDE OF XFMR 39 4KV SWGR 34 DG 3 TERMINAL 0 0.034 0.027 480V MCC 39-2 0 0.066 0.051 480V MCC 39-2 0 0 0 480V MCC 39-7 0 0.041 0.020 480V SWGR 39 0 0.186 0.128 125V DC CHGR 3 250V DC CItGR 2/3 480V SWOR 39 0 0 0 480V MCC 38-7 480V SWGR 39 0 0 0 480V MCC 39-7 480V MCC 39-2 3-903-63 ESS UPS PNL 480V MCC 39-1 HIGH SIDE OF XFMR 39 9 0 0 4KV SWGR 34-1 0 0 0 4KV SWGR 34-1 480V SWGR 39-04050 -0.037-0.771 -0,395 0,391 0.286 0.772 0.396-2.381 -1,231-0.034 -0.027-0.066 -0.051 0.000 0.000-0.041 -0.020 0.036 0.027 0.069 0.052-0.291 -0.207 0.000 0.000 0.000 0.000 0.000 0.000 0.297 0.212 0.050 0.037 0,042 0.020-0.389 -0.269 2.385 1,239-0.391 -0.286 0.391 0.286 75.4 80.7 120.7 89.0 67.3 80,7 120.7 89.0 373.0 88.8 55.0 78.9 106.6 78.9 0.0 0.0 55.4 90.4 55.0 80.3 106.6 79.9 439.1 81.5 0.0 0.0 0.0 0.0 0.0 0.0 439.1 81.3 75.4 80.7 55.4 90.4 569.1 82.2 373.0 88.8 67.3 80.7 67.3 80.7 -2,500* DG 3 TERMINAL 4,160 4.160 0.0 2.385 1.23 HIGH SIDE OF XFMR 39 4.160 4,148 -0.1 0* Indicates a voltage regulated bus ( voltage controlled or swing type machine connected to it)4 Indicates a bus with a load mismatch of more than 0. 1 MVA Calculation:

9389-46-19-1

Attachment:

F Revision:

003 Page F95 of F115 Wt: Dresden Unit3 Location:

OTI Contract:

123 Engineer:

OTI Filename:

DRE Unit3_0005 ETAP 5.5.ON Study Case: DG_2_CCSW Page: 8 Date: 03-21-2007 SN: WASHTNGRPN Revision:

Base Config.: DG3_CRHVAC

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........ ..... ... .... ... ....... .............- ....Converted from ELMS PLUS Diesel Generator connected using nominal voltage, Time period is 10 min or greater into the event, 2 CCSW pumps.LOAD FLOW REPORT Bus Voltage Generation Load ID kV kV Ang. MW M',ar MW 'War ID Load Flow XFMR MW Mvar Amp % PF % Tap 3-903-63 ESS UPS PNL 4KV SWGR 34 4KV SWGR 34-1 125V DC CHGR 3 250V DC CHOR 2/3 480V MCC 38-7 480V MCC 39-1'80V MCC 39-2 480V MCC 39-7 480V SWGR 39 0.480 0.479 -1,6 4.160 4.145 -0.1 4.160 4.148 -0.1 0.480 0.453 -0.4 0.480 0.453 -0.9 0.480 0.479 -1.6 0.480 0.478 -1.6 0.480 0.469 -1.8 0.480 0.479 -1.6 0.480 0.479 -1.6 0 0 0 0 0 0 0_050 0.037 480V SWGR 39 0,771 0.395 4KV SWGR 34-1 1.219 0.549 HIGH SIDEOFXFMR 39 4KV SWGR 34 DG 3 TERMINAL 0 0 0.034 0.027 480V MCC 39-2 0 0 0.066 0.051 480V MCC 39-2 0 0 0 0 480V MCC 39-7 0 0 0.041 0.020 480V SWGR39 0 0 0.186 0.128 125V DC CHGR 3 250V DC CHGR 2/3 480V SWGR 39 0 0 0 0 480V MCC 38-7 480V SWGR 39 0 0 0 0 480V MCC 39-7 480V MCC 39-2 3-903-63 ESS UPS PNL 480V MCC 39-1 HIGH SIDE OF XFMR 39 5 1.239 0 0 4KV SWGR 34-1 0 0 0 0 4KV SWGR 34-1 480V SWGR 39-0.050 -0.037-0.771 -0.395 0.391 0.286 0.772 0.396-2.381 -1.231-0.034 -0.027-0.066 -0.051 0.000 0,000-0.041 -0.020 0.036 0.027 0.069 0.052-0.291 -0.207 0.000 0.000 0.000 0,000 0.000 0.000 0.297 0.212 0,050 0.037 0.042 0.020-0.389 -0.269 2.385 1.239-0.391 -0.286 0.391 0.286 75.4 80.7 120,7 89.0 67.3 80.7 120.7 89.0 373.0 88.8 55.0 78.9 106.6 78.9 0.0 0.0 55.4 90.4 55.0 80.3 106.6 79.9 439.1 81.5 0.0 0.0 0.0 0.0 0.0 0.0 439.1 81.3 75.4 80.7 55.4 90.4 569,1 82.2 373.0 88.8 67.3 80.7 67.3 80.7 -2.500* DG 3 TERMINAL 4.160 4.160 0.0 2.31 HIGH SIDE OF XFMR 39 4.160 4.148 -0.1* Indicates a voltage regulated bits ( voltage controlled or swing type machine connected to it)# Indicates a bus with a load misnatch ofinore than 0.1 MVA Calculation:

9389-46-19-1

Attachment:

F Revision:

003 Page F109 of F115