RS-10-112, Additional Information Supporting Request for License Amendment Regarding Ultimate Heat Sink

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Additional Information Supporting Request for License Amendment Regarding Ultimate Heat Sink
ML101830041
Person / Time
Site: Byron  Constellation icon.png
Issue date: 07/01/2010
From: Hansen J
Exelon Generation Co, Exelon Nuclear
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
RS-10-112
Download: ML101830041 (110)


Text

{{#Wiki_filter:Nuclear Exelon Generati on Company, LLC www.exelon (orp,(om 4300 Winfield Road Warren vill e, IL 60555 RS-10-112 July 1, 2010 U.S. Nuclear Regulatory Commission AnN: Document Control Desk Washington, DC 20555-0001 Byron Station, Units 1 and 2 Facility Operating License Nos. NPF-37 and NPF-66 NRC Docket Nos. STN 50-454 and STN 50-455

Subject:

Additional Information Supporting Request for License Amendment Regarding Ultimate Heat Sink

References:

1. Letter from P. R. Simpson (Exelon Generation Company, LLC) to U.S. NRC, "License Amendment Regarding Ultimate Heat Sink, dated June 30, 2009 II
2. Letter from P. R. Simpson (Exelon Generation Company, LLC) to U.S. NRC, "Additional Information Supporting Request for License Amendment Regarding Ultimate Heat Sink, dated January 25, 2010 II
3. Email from M. J. David (U.S. NRC) to P. R. Simpson (Exelon Generation Company, LLC), "Byron 1&2 - Additional RAI for Ultimate Heat Sink License Amendment Request (ME1669-70)," dated May 18, 2010 (ADAMS Accession Number ML101380525)

In Reference 1, Exelon Generation Company, LLC (EGC) requested a license amendment for Byron Station, Units 1 and 2, to revise Technical Specifications (TS) to add additional essential service water (SX) cooling tower requirements as a function of SX pump discharge temperature to reflect results of a revised analysis for the ultimate heat sink (UHS). The NRC requested additional information to complete the review of the proposed license amendment, and EGC provided a response to the request in Reference 2. In Reference 3, the NRC further requested additional information to complete the review; the EGC response to this request is provided in the attachments to this submittal. Attachment 1 provides the response to the request for additional information from Reference 3, Attachment 2 includes schematic representations of the revised scenario alignments, and Attachment 3 contains the calculation referenced in the response.

July 1,2010 U.S. Nuclear Regulatory Commission Page 2 EGC has reviewed the information supporting a finding of no significant hazards consideration and the environmental consideration that were previously provided to the NRC in Attachment 1 of Reference 1. The additional information provided in this submittal does not affect the bases for concluding that the proposed license amendment does not involve a significant hazards consideration. In addition, the additional information provided in this submittal does not affect the bases for concluding that neither an environmental impact statement nor an environmental assessment needs to be prepared in connection with the proposed amendment. There are no regulatory commitments contained in this letter. If you should have any questions concerning this letter, please contact Ms. Jean M. Smith at (630) 657-2813. I declare under penalty of perjury that the foregoing is true and correct. Executed on the 1st day of July 2010. Attachments:

1. Response to Request for Additional Information
2. Schematic Representations of the Revised Scenario Alignments
3. Additional References

ATTACHMENT 1 Response to Request for Additional Information NRC Request

Background:

The January 25, 2010, responses to NRC staff questions 1.a and 9.b stated that certain operator actions would be taken within the first 10 minutes from the control room including,

" ... 4) Closing the associated riser valve of any fan that does not start in high speed."

Scenarios 8A through 80 in the LAR use one set of cell flow rates, which assume 10 percent effective cooling for cells whose fans fail after loss-of-coolant accident (LOCA) initiation. The 10 percent effective cooling was based on the inability to shut the associated riser valve and still take credit for some cooling in an inactive cell with SX flow. This corresponds with the statement in the RAI response on page 16 that, "Postulated breaker failures would also result in the loss of power to the motor operated riser valves for the impacted SXCT [essential service water cooling tower] fan." Apparently, the computer program does not model the closing of riser valves for cells whose fans do not start in high speed as stated in response to NRC staff questions 1.a and 9.b. The same could be said for scenarios 10-13 in the LAR for the riser valves, although they account for local manual closing of the failed bypass valve in 30 minutes. Question: If the operators were able to close one or both of the riser valves for fans that do not start in high speed after LOCA initiation as your procedure calls for, please confirm and justify that the calculations and the corresponding new TS requirements for this LAR are still conservative and bounding regarding SX pump discharge temperature. In other words, please confirm and justify that the SX pump discharge temperature remains at or below 100° F for the scenarios in the LAR that form the basis of the revised TS. If not, please provide the results of additional, bounding analyses demonstrating that SX pump discharge temperature remains at or below 1000 F, and list and explain any new assumptions in making the additional analyses.

Response

Passive electrical failures that result in the failure of two essential service water cooling tower (SXCT) fans will also result in the loss of power to the associated riser valve for the impacted SXCT fans. The riser valves are enclosed within vaults, and the valves are not readily accessible for manual operation. If a passive electrical failure occurs, the riser valve of the impacted SXCT fans will fail as-is, and without power, the operators would not be able to re-position the associated riser valves. When the essential service water (SX) pump discharge temperature is greater than 82 of, the required number of operable SXCT fans must be running in high speed in accordance with the proposed SXCT fan requirements in Technical Specification (TS) Table 3.7.9-1. Procedural controls are in place to have the associated riser valve open when starting any SXCT fan. In calculation Scenarios 8A, 8B, 8C, 8C1, and 8C2, all of the operable SXCT fans are assumed to be initially running. As discussed above, the operators would not be able to close the riser valves for the two SXCT fans impacted by a passive electrical failure. The calculations Page 1

ATTACHMENT 1 Response to Request for Additional Information previously performed and submitted for this license amendment request (LAR) properly reflect the riser valves as open for the failed SXCT fans. Under the proposed SXCT fan requirements in TS Table 3.7.9-1, when the SX pump discharge temperature is ~ 82 of, the required number of operable SXCT fans may be in standby, and the associated riser valves could be open or closed. If the riser valve on a standby operable SXCT fan is closed, a passive electrical failure could result in closed riser valves for the failed SXCT fans. Thus for Scenarios 80 and 801, the riser valves for the failed SXCT fans could be closed. The calculations previously performed and submitted for this LAR assumed the riser valves for the failed SXCT fans were open. New calculations were made for Scenarios 80 and 801 with the riser valves assumed closed on the cells with failed SXCT fans. One additional calculation, new Scenario 802, was also made for the case with two SXCT fans out of service (OOS) on the same tower with no SXCT fans initially running. The previous calculation had Scenario 802 bounded by the results for Scenario 8C1. Attachment 2 contains schematics for Scenarios 80,801, and 802, and contains the calculations. For the new analysis, the SX flow model was used to calculate SX flow to the cooling tower cells for the scenarios with the riser valves closed on the failed SXCT fans. Cooling tower performance curves were generated for the revised cooling tower water flow rates using the Byron Station cooling tower MRUESC model. The wet bulb temperature assumed for each scenario was unchanged from the previous analysis. Based on the revised cooling tower flows, new inputs were calculated for the percentage of water cooled in each tower, the total flow to the towers, the fraction of overall flow that goes to Tower 1, and the fraction of heat load that goes to Tower 1. The revised inputs were used in the MathCAO transient temperature model to recalculate the maximum basin temperature. The heat load, basin water volume, and initial basin water temperature for each scenario were not changed. The following new assumptions were made:

1. For new Scenario 802 a tower performance curve based on 6,000 gpm was used as an input for Tower 2. This assumption had no impact on the calculated results, because in Scenario 802, all of the risers in Tower 2 are isolated with no water flow through operating cells. In addition, the fraction of flow cooled in Tower 2 (Le., f21 and f22) is zero.
2. For the new/revised scenarios with riser valves assumed closed on the failed SXCT fans, a higher percentage of the water flow and heat load is directed to one of the two towers. The fraction of load to Tower 1 for each time period, ~1 and ~2, is assumed to be equal to the fraction of flow to Tower 1 for each time period, a1 and 02. This assumption is based on the flow model results that show the accident heat load fraction (Le., the load from the Unit 1 RCFCs and the Unit 1 and Unit 0 CC heat exchangers) going to Tower 1 is approximately the same as the total system flow fraction going to Tower 1.

Page 2

ATTACHMENT 1 Response to Request for Additional Information The new calculations show that with the riser valves closed on the cells with the failed SXCT fans, the calculated maximum basin temperature remains less than or equal to the SX system design temperature of 100 of. These results are summarized in the table below. Cells with Maximum Basin Temperature (OF) Cells Scenario Failed SXCT Out of Service Fans Riser Valves Open Riser Valves Closed on Failed Cells on Failed Cells 80 A&G E&F 99.7 100.0 801 G E&F 99.7 98.2 802 G&H E&F 99.7* 97.5

  • Scenario 8C1 maximum Note that for Scenario 80 the tower performance is conservatively modeled using the highest three-hour wet bulb temperature of 82 OF. As indicated in proposed TS Table 3.7.9-1, with six SXCT fans operable and not running in high speed (Le., two SXCT fans out of service) the maximum allowed SX pump discharge temperature is 77 of. With the SX pump discharge temperature limited to 77 of, the actual wet bulb temperature would have to be less than 77 of, since a forced-draft cooling tower is not capable of cooling the water to a temperature lower than the wet bulb temperature. Therefore, margin exists in the calculated maximum basin temperature for Scenario 80.

For the cool weather cases in Design Analysis NEO-M-MSO-011 , which was previously submitted in Reference 1, Scenario 10 is the same as Scenario 11, except the riser valves for the failed SXCT fans are closed in Scenario 10 and open in Scenario 11. The previous calculation results show that with the riser valves open, the maximum calculated basin temperature is 98.6 OF (Scenario 11) as compared to 98.4 of with the riser valves closed (Scenario 10). In conclusion, the new TS requirements proposed in Reference 2 are conservative regarding SX pump discharge temperature in the event that riser valves are closed for SXCT fans that do not start in high speed after a LOCA initiation. SX pump discharge temperature remains at or below 100 of for the scenarios provided in the LAR that form the basis of the revised TS. Page 3

ATTACHMENT 2 Schematic Representations of the Revised Scenario Alignments Scenario 80 Scenario 801 Scenario 802

SCENARIO 8D * (RISER VALVES CLOSED) POST LOCA CONFIGURATION OOS TOWER 2 FAILED TOWER 1 F BCD 12 C><) o 8 A C 28 18 2A 1A 28 18 RCFC RCFC

  • FOR SCENARIO 80 NO COOLING IS ASSUMED FOR 10 MINUTES.

SCENARIO 8D1* (RISER VALVES CLOSED) POST LOCA CONFIGURATION TOWER 2 FAILED TOWER 1 ABC 0 11 11 21 21

                              <>0   <>0  <>0      <>0 o        8                        A           C 28        18                   2A         1A x    X 18       ::I: ::I:         1A         2A

(.) (.) RCFC (.)

                   ~

(.)

                        .....      RCFC       RCFC
  • FOR SCENARIO 8D1 NO COOLING IS ASSUMED FOR 10 MINUTES.

SCENARIO 8D2* (RISER VALVES CLOSED) POST LOCA CONFIGURATION OOS FAILED TOWER 1 ABC D 12 11 11 21 21 C><) C<) C<) C<) C<) o 8 A C 28 18 2A 1A x x x 28 X X X 2A RCF'C g g g 1A RCF'C RCFC C\I CSI -

  • FOR SCENARIO 8D2 NO COOLING IS ASSUMED FOR 10 MINUTES.

ATTACHMENT 3 Additional References Design Analysis NED-M-MSD-009, Revision 8A

CC-AA-309-1001 Revision 5 AITAC HMEN T2 Design Analys is Minor Revision Cover Sheet Pa e 1 Design Analysi s (MInor Revisio n) Last Page No.

  • C21 Analysis No.: NED-M-MSO-009 ~------~--------------------~

I Revisio n: 2 8A ntle: :a Byron Ultimate Heat Sink Cooling Tower Bssln Temperature Calculation: Part IV EC/ECR No.: 371386 Revisio n:

  • 4 0

Statlon(s): ' Byron Unit No.:' 1 and 2 Safety/QA Class:

  • Safety Related System Code(s): II SX Is this Design Analysi s Safeguards Informa tion? It Yes 0 No 181 If yes, see SY-M-1 01-106 Does thl. Dnlgn Analysis contain Unverified As8umptlons? II Yes r8I No 0 If yes, ATI/AR#: 794928-02 This Design Analysis SUPERCEDES: tI In Its entirety .

Descrip tion of Changes (list affected pages): .4 NED-M-MSD-009 was revised to Include revised Scenarios SO and 801. and to include an additional Scenario S02. These scenarios are Included to respond to a 5/18110 NRC Reques t for Additional Information (RAI) related to an Ultimate Heat Sink License Amendment Request This minor revision Includes main body pages 1-16, Appendix A (54 pages). Appendix B (6 pages), and Appendix C (21 pages). Disposi tion of Change s: II See page 13 of this minor revision for dIsposition of change. No Ucense Amendment Request change is needed to the Ultimate Heat Sink Preparer: II Andrew A. Carmean Prinl IIIIt! Method of Review: " Detaile d Review 181 Altema te~on8 0 Teeling 0 Reviewer: " _S_teve __ M_._Daw~s:"":,o=n~___ PrnlRante

                                                                  ~~s!~_           1 Review                       Independent review 181         Peer review 0 Notes: II (FofEltIomll~ Ont,l External Approver: ID        Michael A. Nena Exelon Review er "

Exelon Approve r: 1:1 InIName

Exelon'M CC-AA-309 Revision 9 Page 17 of 17 Nuclear Level 3 - Information Use ATTACHMENT 1 Owners Acceptance Review Checklist for External Design Analysis Page 1 of 2 DESIGN ANALYSIS NO. NED-MSD-M-009 REV: 8A Yes No N/A

1. Do assumptions have sufficient rationale? f8I 0 0 Are assumptions compatible with the way the plant is operated and with the
2. licensing basis? A LAR hn been submitted for the UHS. This minor revision Is In f8I 0 0 response to a RAt on the request.
3. Do the design inputs have sufficient rationale? f8I 0 0 Are design inputs correct and reasonable with critical parameters identified, if 4.

appropriate? 181 0 0 Are design inputs compatible with the way the plant is operated and with the

5. licensing basis? f8I 0 0
6. Are Engineering Judgments clearly documented and justified? 0 0 181 Are Engineering Judgments compatible with the way the plant is operated
7. and with the licensing basis? 0 0 l8I Do the results and conclusions satisfy the purpose and objective of the
8. Design Analysis? l8I 0 0 Are the results and conclusions compatible with the way the plant is operated
9. and with the licensing basis? A lAR has been submitted for the UHS. This minor 181 0 0 revision Is In response to a RAI on the request.

Does the Design Analysis include the applicable design basis 10. documentation? 181 0 0 Have any limitations on the use of the results been identified and transmitted to the appropriate organizations? A LAR has been submitted for the UHS. The wet

11. bulb temperature restrictions for taking two SXCT fans OOS on the same bus has already 0 0 been Imptemented In procedure OBOl 7.9. An No. 794928-02 tracks the UVA asaoclated with operator action to reduce the heat load.
12. Are there any unverified assumptions? 181 0 0 Do all unverified assumptions have a tracking and closure mechanism In 13.

place? An 794928-02. 181 0 0 Have all affected design analyses been documented on the Affected

14. Documents List (ADL) for the associated Configuration Change? Byron EC f8I 0 0 371388.

Do the sources of inputs and analysis methodology used meet current technical requirements and regulatory commitments? (If the Input sources or

15. analysis methodology are based on an out-of-date methodology or code, 181 0 0 additional reconciliation may be required if the site has since committed to a more recent code)

Have vendor supporting technical documents and references (including GE 16. DRFs) been reviewed when necessary? 0 0

CC-AA-309 Revision 9 Page 2 of 2

17. HaVet.ma~gin imtPa(cRtsfbeen ideEnRtifAAied 2and d)OC?umented appropriately for any 0 nega Ive Impac s e erence - - OO7 ~

EXELON REVIEWER: nni'l!ci Str<<nf; v

                                                              <~~

Prlntjt Sign DATE:

CALCULATION NO. NEO-M-MSO-O09 REVISION NO. SA PAGE 1 1.0 PURPOSE NEO-M-MSO-009 was revised to include revised Scenarios 80 and 801, and to include an additional Scenario 802. These scenarios are included to respond to a 5/18/10 NRC Request for Additional Information (RAI) related to an Ultimate Heat Sink License Amendment Request [Ref. 4.1]. The summary of the NRC question is: If the operator were able to close riser valves for fans that do not start in high speed as the procedure calls for, are the calculations for this LAR still conservative or bounding? 2.0 DESIGN INPUTS The design inputs specified in Appendix H of Revision 8 of this calculation apply to the present minor revision except the following: 2.1 The accident scenarios used in this minor revision of the calculation are modified from UHS-01 [Ref. 4.8] Attachment B to respond to a 5/18/10 NRC Request for Additional Information (RAI) related to an Ultimate Heat Sink License Amendment Request [Ref. 4.1] and are discussed in more detail in Sections 7.3.1 through 7.3.3. 2.2 The PIPE-FLO model from BYR96-259, Rev. 2 [Ref. 4.5] is used to develop flow through the two trains of the SX cooling tower for each accident scenario. See Section 7.1 for additional information. 2.3 Cooling tower performance curves for scenarios 80, 801, and 802 are based on the model and methodology of BYR97-127, Rev. 1 [Ref. 4.4]. 3.0 ASSUMPTIONS All assumptions in Appendix H of Revision 8 of this calculation apply to the present minor revision except the following: 3.1 For Scenario 802 the flow through the operating cells in Tower B is zero, thus the tower performance curve used for Tower B has no impact on the calculated basin temperature. In this case, the tower performance curve is based on 6,000 gpm, which is the lowest flow rate the model will run at. 3.2 For scenarios 80, 801, and 802, no cooling is credited prior to fan initiation at 10 minutes. Note, this is assumption 3.3 from Revision 8 and is unchanged. 3.3 The heat loads taken from Table 11 of ATO-0063, Rev. 4B [Ref. 4.2] assume that half the RCFC heat load on the accident unit is shed at, or prior to, 30 minutes. Since no procedures are currently in place to implement this operator action, this assumption is considered unverified. (UNVERFIFED) Note, this is assumption 3.4 from Revision 8 and is unchanged. 3.4 For Scenarios 80, 801, and 802, the fraction of load to Tower 1, J31, J32, is set equal to the fraction of flow to Tower 1, 01, 02. This is based on the PIPE-FLO results in Appendix A. The flow model results show that the accident heat load (U-1 RCFC flow, U-1 CCHX flow, and u-o CC HX flow) fraction going to Tower 1 is approximately the same as the fraction of flow going to Tower 1. For example in Scenario 80:

CALCULATION NO. NEO-M-MSO-009 REVISION NO. SA PAGE 2 Total Flow Flow to T1 (gpm) (gpm) 1A11C RCFC Flow 5,962 5,962 1B/1 D RCFC Flow 5,478 0 U1 CC HX Flow 8,000 8,000 UO CC HX Flow 8,000 4,945 Totals 27,440 18,907 Therefore, ~ = 18,907 1 27,440 = 0.689, which is close to a = 0.678 (from Section 7.3.1).

4.0 REFERENCES

4.1 Byron 1 & 2 - Additional RAI for Ultimate Heat Sink License Amendment Request (ME1669-70), Accession Number ML101380525, dated 5/18/2010. 4.2 ATD-0063, Rev. 4B, "Heat Load to the Ultimate Heat Sink During a Loss of Coolant Accident." 4.3 RS-09-054, "License Amendment Regarding Ultimate Heat Sink," Byron letter to the NRC, dated 6/30109. 4.4 BYR97-127, Rev. 1, "Byron Ultimate Heat Sink Cooling Tower Performance Calculations. " 4.5 BYR96-259, Rev. 2, "SX System FLO-Series Analysis." (Note, minor revisions 2A, 2B, and 2C do not significantly impact the model.) 4.6 PIPE-FLO Version 9.1, Engineered Software Incorporated (S&L Program No. 03.7.100-9.1). 4.7 MRUESC model for Byron Cooling Tower. Validation Report SWR-805, Rev. 1, dated 12/17/91, Chron 177547. 4.8 Attachment B to UHS-01, Rev. 4, "Ultimate Heat Sink Design Basis LOCA Single Failure Scenarios. " 5.0 IDENTIFICATION OF COMPUTER PROGRAMS The maximum service water temperature was determined by running Mathcad Version 11.2a, Program Number 03.7.548-11.2. All computer runs using Mathcad were made on Sargent and Lundy L.L.C. PC No. ZL4868 from Controlled File Path: C:\Program Files\MathSoft\Mathcad 11 Enterprise Edition\. The hydraulic models were run using PIPE-FLO Version 9.1, Program Number 03.7.100-9.1 [Ref. 4.6]. All computer runs for PIPE-FLO are made on Sargent and Lundy L.L.C. PC No. ZL4868 from Controlled File Path: C:\Program Files\Engineered Software\PIPE-FLO Professional\ The UHS cooling tower performance results for Attachment C were found using the MRUESC model for the Byron Cooling Tower [Ref. 4.7] run in MS-DOS via VMware

CALCULATION NO. NED-M ..MSD-009 REVISION NO. SA PAGE 3 Player. The MRLlESC model executable has been validated by Exelon under the Exelon Quality Assurance Program. All computer runs for the MRLlESC model are made on Sargent and Lundy L.L.C. PC No. ZL4868. 6.0 METHOD OF ANALYSIS Minor revision 8A of this calculation will use the ESW cooling tower transient model from Revision 8 of this calculation to calculate the basin temperature response for revised Scenarios 80 and 801, and additional Scenario 802. Changes to the Revision 8 Mathcad model required to perform the Revision 8A analysis are summarized as follows and shown in Appendix C:

1) For scenarios 80, 801, and 802 new flow rates were generated using PIPE-FLO

[Design Input 2.2] with the riser valves to Cells E and F closed for each scenario.

2) Tower performance curves were generated for scenarios 80, 801, and 802 using MRUESC [Design Input 2.3]. For Tower B in scenario 802, there are no active cells.

In this case, the tower performance curve is based on 6,000 gpm, which is the lowest flow rate the model will run at (see Assumption 3.1). The Byron ESW cooling tower performance is acceptable if the calculated basin temperature is at or below the SX cooling tower basin design temperature of 100°F. 6.1 Scenario Descriptions Scenarios 80,801, and 802 were developed by modifying the scenarios in Attachment B of UHS-01 [Ref. 4.8] to have the riser valves closed to failed cells E and F. The following is a short description of each scenario. Note that from a hydraulic standpoint, the Pre-LOCA and Post-LOCA configurations are the same, unless operator action is taken to open or close valves. Also, since no cooling is credited prior to fan operation at 10 minutes (see Assumption 3.2) only the Post-LOCA configuration is shown below. Furthermore, fan operation does not affect the hydraulic analysis. Scenario 80 Cells OOS: Cell A, Cell G SX Pumps: One running on each unit (pre-LOCA) Single failure: breaker 1425Z at 4160V Bus 142 fails open - Loss of power to Cooling Tower Cells E and F fans Post-LOCA Cooling Tower Configuration (SX Pumps: two on Unit 1, one on Unit 2) Following 10 minute operator action to start fans and open riser valves Tower A: 3 riser valves open, 0 bypass valves open Tower A: 3 active cells, 1 OOS cell Tower B: 1 riser valves open, 0 bypass valves open Tower B: 1 active cell, 1 OOS cell, 2 failed cells Scenario 801 Cells OOS: Cell G SX Pumps: One running on each unit (pre-LOCA) Single failure: breaker 1425Z at 4160V Bus 142 fails open - Loss of power to Cooling Tower Cells E and F fans

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA PAGE 4 Post-LOCA Cooling Tower Configuration (SX Pumps: two on Unit 1, one on Unit 2)

                             ° °° Following 10 minute operator action to start fans and open riser valves Tower A: 4 riser valves open, bypass valves open Tower A: 4 active cells, OOS cells Tower B: 1 riser valves open, bypass valves open Tower B: 1 active cell, 1 OOS cells, 2 failed cells Scenario 802 Cells OOS: Cell G, Cell H SX Pumps: One running on each unit (pre-LOCA)

Single failure: breaker 1425Z at 4160V Bus 142 fails open - Loss of power to Cooling Tower Cells E and F fans Post-LOCA Cooling Tower Configuration (SX Pumps: two on Unit 1, one on Unit 2)

                             ° °° Following 10 minute operator action to start fans and open riser valves Tower A: 4 riser valves open, bypass valves open
               °° Tower A: 4 active cells, OOS cells Tower B: riser valves open, bypass valves open Tower B: active cells, 2 OOS cells, 2 failed cells 6.2  Resistance Values The flow rates for the scenarios described in Section 6.1 were run by setting the SX pumps to 100% head and inserting a resistance value (K) into each riser and bypass line that is closed to achieve the desired flow rate of at least 250 gpm for each riser valve leakage and at least 375 gpm for each bypass valve leakage (see methodology from BYR96-259 [Ref. 4.5]). The SX pumps were run at 100% head (as opposed to 95%) with valve leakage modeled. Initial basin temperatures were used for fluid density (77°F for Scenarios 80 and 802, and 82°F for Scenario 801). PIPE-FLO models 8C, 8B, and 8C1 from Appendix H of Revision 8 of this calculation were used as starting points for PIPE-FLO models 80, 801, and 802, respectively. Even though cooling tower efficiency improves with lower flow rates, more leakage (less flow to the active tower cells and more bypass around the active tower cells) is conservative, as it yields higher basin temperatures. This was confirmed in undocumented runs. The K values used to model valve leakage for each scenario are shown in Table 6-1. The results for each scenario are shown in Tables 7-1 and documented in Appendix A.

The resistance values (K) for each scenario are shown below in Table 6-1. Table 6 Resistance Values (K) for Each Scenario Scenario Scenario Scenario Additional Resistance (K) 80 801 802 Resistance to Riser Valve OSX 162A (Pipe 857) 20,000 - - Resistance to Riser Valve OSX162B (Pipe 859) - - - Resistance to Riser Valve OSX162C (Pipe 861) - - - Resistance to Riser Valve OSX1620 (Pipe 863) - - - Total Bypass Line Resistance to "A" Tower (Pipe 864) 90,000 90,000 90,000 Resistance to Riser Valve OSX 162E (Pipe 849) 30,000 30,000 50,000 Resistance to Riser Valve OSX 162F (Pipe 851) 30,000 30,000 50,000 Resistance to Riser Valve OSX162G (Pipe 853) 30,000 30,000 50,000 Resistance to Riser Valve OSX162H (Pipe 855) - - 50,000 Total Bypass Line Resistance to "B" Tower (Pipe 856) 100,000 100,000 140,000

CALCULATION NO. NEO-M-MSO-009 REVISION NO. SA PAGES 6.3 Tower Performance Curves The tower performance curves are shown in Figures 8-1 through 8-3 for each scenario. These figures plot THot VS TCold for each tower performance curve for each cooling tower as provided by the methodology in BYR97-127 [Ref. 4.4]. For each scenario, two points were selected from the applicable tower performance curve (see Appendix B) to provide a linear approximation of tower performance over the range of T Hot and TCold temperatures expected for that scenario. The selected points are checked against final results to confirm their applicability to the actual temperature range. These points are listed as Th1, Th2, Th3, Th4, Tc1, Tc2, Tc3, and Tc4 in the Mathcad models.

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA PAGE 6 7.0 NUMERICAL ANALYSIS Operator Actions - All accident scenarios evaluated in this minor revision credit operator action to reduce the heat load rejected to the UHS within 30 minutes post-LOCA by securing fans on two of four RCFCs. 7.1 PIPE-FLO Results The results of all scenario PIPE-FLO runs are summarized in Table 7-1. Table 7 PIPE-FLO Results of All Scenarios Post-LOCA Scenario Scenario Scenario SX Component (gpm) 80 801 802 SX Pump 1A 19,034 19,167 18,599 SX Pump 1B 16,316 16,418 15,981 RCFC 1A 3,055 3,092 2,938 RCFC 1B 2,706 2,739 2,593 RCFC 1C 2,907 2,943 2,796 RCFC 10 2,772 2,805 2,657 SX Pump 2A 0 0 0 SX Pump 2B 28,257 28,439 27,669 RCFC 2A 2,798 2,840 2,671 RCFC 2B 2,867 2,909 2,721 RCFC 2C 2,903 2,947 2,771 RCFC 20 2,796 2,838 2,654 Flow to Riser Valve OSX162A 270 11,220 14,998 Flow to Riser Valve OSX162B 14,048 11,089 14,824 Flow to Riser Valve OSX162C 13,973 11,029 14,745 Flow to Riser Valve OSX1620 13,955 11,014 14,726 Total Bypass Line Flow to "A" Tower 884 826 900 Flow to Riser Valve OSX162E 284 261 287 Flow to Riser Valve OSX162F 283 260 287 Flow to Riser Valve OSX162G 283 260 287 Flow to Riser Valve OSX162H 18,695 17,168 287 Total Bypass Line Flow to "B" Tower 932 898 909 7.2 Cooling Tower Performance The SX flow through each of the riser valves for Scenarios 80,801, and 802 are shown in the table below. Table 7-2: Riser flow rate for Scenarios 80, 801, and 802 SX Component Scenario Scenario Scenario 80 801 802 Flow to Riser Valve OSX162A (gpm) OOS 11,220 14,998 Flow to Riser Valve OSX162B (gpm) 14,048 11,089 14,824 Flow to Riser Valve OSX162C (gpm) 13,973 11,029 14,745 Flow to Riser Valve OSX1620 (g~m) 13,955 11,014 14,726

CALCULATION NO. NEO..M-MSO-009 REVISION NO. SA PAGE 7 SX Component Scenario Scenario Scenario 8D 801 8D2 Flow to Riser Valve OSX162E (gpm) Failed Failed Failed Flow to Riser Valve OSX162F (gpm Failed Failed Failed Flow to Riser Valve OSX162G ,gpm OOS OOS OOS Flow to Riser Valve OSX162H I gpm 18,695 17,168 OOS Failed = cell with failed fan with riser valve closed

                  =

OOS fan taken out of service with riser valve closed Table 7-3: Averag e Flow Rate per Cell for Each Cooling Tower (Minus Ora in Line Losses) Average Flow Scenario Scenario Scenario per Active Cell 8D 8D1 8D2 Tower A 13,742 10,838 14,573 Tower B 18,445 16,918 0 7.3 Flow Rate Analysis As discussed in BYR96-259 [Ref. 4.5] and BYR97-127 [Ref. 4.4], leakage is taken into account when determining the average flow rates. The table below shows the applicable flow rates for each scenario. Tabe I 7-4 FI ow Rate A nalYSIS Scenario 80 Scenario 801 Scenario 802 14,048 + 13,973 + 13,955- 11,220 + 11,089 + 11,029 14,998 + 14,824 + 14,745 Flow through operating cells in T1 750 = 41,226 + 11,014 - 1000 = 43,352 + 14,726 - 1000 = 58,293 14,048 + 13,973 + 13,955 + 11,220 + 11,089 + 11,029 14,998 + 14,824 + 14,745 Total flow through T1 270 + 884 = 43,130 =

                                                                      + 11,014 + 826 = 45,178 + 14,726 + 900 60,193 Flow through operating cells in T2                =

18,695 - 250 18,445 = 17,168 - 250 16,918 0 18,695 + 284 + 283+ 283 + 17,168 + 261 + 260+ 260 287 + 287 + 287 + 287 + Total flow through T2 = 932 20,477 =

                                                                           + 898 18,847                   =

909 2,057 Average flow per cell in T1 13,742 10,838 14573 Average flow per cell in T2 18,445 16,918 0 Flow to RCFC 1A 3,055 3092 2.938 Flow to RCFC 1A + RCFC 1B = 3,055 + 2,706 5,761 = 3,092 + 2,739 5,831 = 2,938 + 2,593 5,531 7.3.1 Accident Scenario 8D This scenario is the same setup as Scenario 8C from Revision 8 of this calculation, with the exception that no fans are running initially. No cooling is credited prior to fan initiation at 10 minutes (see Assumption 3.2). The single failure considered for Scenario 8D is the loss of power to Cells E and F cooling tower fans. The initial conditions assume a basin temperature of 7rF with one SX pump running on each unit. This scenario assumes two tower cells (A and G) are out of service (OOS). Initially, no fans on all the other cells are running and all the bypass valves are closed. The total heat load to be used for this scenario is the "Total Heat Load to the UHS" shown in Table 11 of ATD-0063, Rev. 4B [Ref. 4.2], with half of the RCFC heat load subtracted at 30 minutes.

CALCULATION NO. NED-M-MSD-009 REVISION NO. 8A PAGE 8 There is one set of parameters f, a, M 1, B 1, M2, B2, a, and ~ that are needed to determine the basin temperature response. The UHS tower flows, based on Scenario 80 are shown in Table 7-1. The Thot vs Teold relationship is illustrated in Figure 8-1. Determination of f, a, M1, B1, M2, B2, a, and ~. f11, f12 : Flow through operating cells in T 1

             = ----------~--~--~-----------

Total flow through T 1 including bypass flow

             = 41,226 gpm = 0.956 43,130 gpm f21, f22 :
             = Total Flow    through operating cells in T2
               ----------~--~---------------

flow through T2 including bypass flow

             = 18,445 gpm = 0.901 20,477 gpm a1,a2 :

This is equal to the total flow to T1 and T2, (43,130 + 20,477) gpm = 63,607 gpm M11, B11, M12, B12: Based on an average flow of 13,742 gpm per cell in T1, the tower performance for T1 is generated using a flow of 13,742 gpm (Figure 8-1). Based on the T H, Tc values (as determined from the T H values calculated for tower operation in Design Input 2.3), [(118.92, 99.92), (114.17, 98.17)], Mathcad calculates M11, M 12 and B 11, B 12 from the tower performance inputs. M21, B21, M22, B22: Based on an average flow of 18,445 gpm per cell in T2, the tower performance for T2 is generated using a flow of 18,445 gpm (Figure 8-1). Based on the T H, Tc values (as determined from the T H values calculated for tower operation in Design Input 2.3), [(124.11,108.11), (118.11,105.11)], Mathcad calculates M21, M22 and B21, B22 from the tower performance inputs. a1, a2:

            =      Flow to Tl       = 43,130 gpm = 0.678 Total SX flow, Q       63,607 gpm
            ~  =a (see Assumption 3.4)

CALCULATION NO. NEO ..M-MSO-009 REVISION NO. SA PAGE 9 8ased on the parameters f, Q, M1, 81, M2, 82, a, and ~ determined above, the coefficients A, 8, and C in Eq (3), renamed A1/A2, 01/02, and C1/C2 here, are calculated by Mathcad. The output from the MathCAD calculation for this scenario is shown on pages C1 through C7. The maximum basin temperature, Tb max , is calculated to be 100.0°F with an initial basin temperature of 77°F. The temperature at 30 minutes is calculated to be 98.9°F with an initial basin temperature of 77°F. 80th of these values are at or below the acceptance limit of 100°F. 7.3.2 Accident Scenario 801 This scenario is the same setup as Scenario 88 from Revision 8 of this calculation, with the exception that no fans are running initially. No cooling is credited prior to fan initiation at 10 minutes (see Assumption 3.2). The single failure considered for Scenario 801 is the loss of power to Cells E and F cooling tower fans. The initial conditions assume a basin temperature of 82°F with one SX pump running on each unit. This scenario assumes one tower cell (G) is out of service (OOS). Initially, no fans on all the other cells are running and all the bypass valves are closed. The total heat load to be used for this scenario is the "Total Heat Load to the UHS" shown in Table 11 of ATD-0063, Rev. 48 [Ref. 4.2], with half of the RCFC heat load subtracted at 30 minutes. There is one set of parameters f, Q, M1, 81, M2, 82, a, and ~ that are needed to determine the basin temperature response. The UHS tower flows, based on Scenario 801 are shown in Design Input 2.3. The Thot vs Tcold relationship is illustrated in Figure 8-2. Determination off, Q, M1, 81, M2, 82, a, and~. f11, f12 :

               =        Flow through operating cells in T1 Total flow through T1 including bypass flow
               = 43,352 gpm = 0.960 45,178 gpm f21, f22 :
               =       Flow through operating cells in T2 Total flow through T2 including bypass flow
               = 16,918 gpm = 0.898 18,847 gpm Q1,Q2 :

This is equal to the total flow to T1 and T2, (45,178 + 18,847) gpm = 64,025 gpm

CALCULATION NO. NED-M ..MSD-009 REVISION NO. SA PAGE 10 M11, B11, M12, B12: Based on an average flow of 10,838 gpm per cell in T1, the tower performance for T1 is generated using a flow of 10,838 gpm (Figure 8-2). Based on the T H, T c values (as determined from the T H values calculated for tower operation in Design Input 2.3), [(125.27, 97.27), (117.37, 95.37)], Mathcad calculates M11, M 12 and B 11, B 12 from the tower performance inputs. M21, B21, M22, B22: Based on an average flow of 16,918 gpm per cell in T2, the tower performance for T2 is generated using a flow of 16,918 gpm (Figure 8-2). Based on the T H, T c values (as determined from the T H values calculated for tower operation in Design Input 2.3), [(120.68,104.68), (115.04,102.04)], Mathcad calculates M21, M22 and B21, B22 from the tower performance inputs. 01 , 02:

                = __FI_ow_to_T_1_ = 45,178gpm =0.706 Total SX flow, Q    64,025 gpm
     ~:

rJ =0 (see Assumption 3.4) Based on the parameters f, Q, M1, B1, M2, B2, 0, and rJ determined above, the coefficients A, B, and C in Eq (3), renamed A1/A2, 01/02, and C1/C2 here, are calculated by Mathcad. The output from the MathCAO calculation for this scenario is shown on pages C8 through C14. The maximum basin temperature, Tb max , is calculated to be 98.2°F with an initial basin temperature of 82°F. The temperature at 30 minutes is calculated to be 98.2°F with an initial basin temperature of 82°F. This value is below the acceptance limit of 100°F. 7.3.3 Accident Scenario 802 This scenario is the same setup as Scenario 8C 1 from Revision 8 of this calculation, with the exception that no fans are running initially. No cooling is credited prior to fan initiation at 10 minutes (see Assumption 3.2). The single failure considered for Scenario 802 is the loss of power to Cells E and F cooling tower fans. The initial conditions assume a basin temperature of 77°F with one SX pump running on each unit. This scenario assumes two tower cells (G and H) are out of service (OOS). Initially, no fans on all the other cells are running and all the bypass valves are closed. The total heat load to be used for this scenario is the "Total Heat Load to the UHS" shown in Table 11 of ATO-0063, Rev. 4B [Ref. 4.2], with half of the RCFC heat load subtracted at 30 minutes. There is one set of parameters f, Q, M 1, B 1, M2, B2, 0, and rJ that are needed to determine the basin temperature response.

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA PAGE 11 The UHS tower flows, based on Scenario 802 are shown in Design Input 2.3. The Thot VS Tcold relationship is illustrated in Figure 8-3. Determination of f, a, M1, 81, M2, 82, a, and J3. f11. f12 :

              =        Flow through operating cells in T1 Total flow through T1 including bypass flow
              = 58,293 gpm = 0.968 60,193 gpm f21. f22 :
              =        Flow through operating cells in T2 Total flow through T2 including bypass flow
              =    0 gpm = 0.000 2,057 gpm a1. a2:

This is equal to the total flow to T1 and T2, (60,193 + 2,057) gpm = 62,250 gpm M11. 811. M12. 812: 8ased on an average flow of 14,573 gpm per cell in T1 and a wet bulb temperature of 76°F, the tower performance for T1 is generated using a flow of 14,573 gpm (Figure 8-3). 8ased on the T H, Te values (as determined from the TH values calculated for tower operation in Design Input 2.3), [(117.91, 98.91), (112.77, 96.77)], Mathcad calculates M11, M12 and 811, 812 from the tower performance inputs. M21! 821. M22. 822: 8ased on an average flow of 0 gpm per cell in T2 and a wet bulb temperature of 76°F, the tower performance for T2 is generated using a flow of 6,000 gpm (see Assumption 3.1), since the MRL model was validated down to a minimum flow of 6,000 gpm (Figure 8-3). 8ased on the T H, Te values (as determined from the TH values calculated for tower operation in Design Input 2.3), [(111.82, 83.82), (104.74,82.74)], Mathcad calculates M21, M22 and 821, 822 from the tower performance inputs. a1. a2:

             = __   FI_ow_to_T_1_ = 60,193gpm =0.967 Total SX flow, a      62,250 gpm
    ~:

J3 = a (see Assumption 3.4)

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA PAGE 12 Based on the parameters f, Q, M 1, B 1, M2, B2, a, and ~ determined above, the coefficients A, B, and C in Eq (3), renamed A1/A2, 01/02, and C1/C2 here, are calculated by Mathcad. The output from the MathCAO calculation for this scenario is shown on pages C 15 through C21. The maximum basin temperature, Tb max , is calculated to be 97.5°F with an initial basin temperature of 7rF. The temperature at 30 minutes is calculated to be 97.1 OF with an initial basin temperature of 7rF. This value is below the acceptance limit of 100°F.

CALCULATION NO. NED*M*MSD*009 REVISION NO. 8A PAGE 13 8.0 RESULTS AND CONCLUSIONS The results for Scenarios 80,801, and 802 are summarized below. Tabl e 81 - Summary 0 f Scenanos Basin Wet Bulb Initial Basin Max Basin Cells Temperature Scenario 00S1 Temperature Temperature Temperature (OF) (OF) at 30 (OF) (OF) minutes 100.0 80 A&G 82 77 98.9 (at 50 min) 98.2 801 G 82 82 98.2 (at 29 min) 97.5 802 G&H 76 77 97.1 (at 40 min) The single failure considered for all scenarios IS the loss of power to Cells E and F. with riser valves closed. The new calculations show that with the riser valves closed on the cells with the failed fans, the calculated maximum basin temperature remains less or equal to the SX system design temperature of 100°F. No change is needed to the Ultimate Heat Sink License Amendment Request. Limitations Procedures would have to be changed so that in the situation when two fans are going to be taken OOS for maintenance on the same electrical breaker (Scenario 802), operators would have to check that the wet bulb temperature is s 76°F. Results are valid only if half of the RCFC heat load on the accident unit is shed at, or prior to, 30 minutes. Procedures would have to be changed to implement this operator action.

CALCULATION NO. NEO-M-MSO-O09 REVISION NO. 8A PAGE 14

                                                                      - - 8 0 Tower A, 13742 gpm, Twb 82°F Figure 8-1: Scenario 80
                                                                      - - - 80 Tower B, 18445 gpm, Twb 82°F 125 120                                      -- - -                                     .,.,.. ..... ,e""'-

115 110 LL ,,"

~ 105 8                            "

I-100 - - - - 95 -- - 90 85 90 100 110 120 130 140 150 160 170 Toot (OF)

CALCULATION NO. NEO-M-MSO-O09 REVISION NO. 8A PAGE 15

                                                                                                 --801 Tower A, 10838 gpm, Twb 82°F Figure 8-2: Scenario 801
                                                                                                 - - -801 Tower B, 16918 gpm, Twb 82°F 120 115 110
                                       , ",/

105 E ////

.J 100 95 90 85 90      100        110     120           130                       140                               150                       160   170 Thot (OF)

CALCULATION NO. NEO-M-MSO-O09 REVISION NO. 8A PAGE 16 Figure 8-3: Scenario 802 --802 Tower A, 14573 gpm, Twb 76°F

                                                                        - - - 802 Tower B. 6000 gpm, Twb 76°F 115 110 105 100 95 LL L
 'a "8

t-90 85

           - - -~--.~ -- - -- - - - - - - - - - - - -- - "'--

80 ---- - . 75 70 85 95 105 115 125 135 145 155 Toot (OF)

CALCULATION NO. NED-M-MSD-009 REVISION NO. 8A APPENDIX A Page A1 System: Scenario 80 06/24/10 9: 11 am Lineup: Scenario 80 Company: Sargent & Lundy LLC rev: 06/24/10 8:58 am Project: Atm pressure: 14.7 psi a LIST REPORT Total System Volume: 737326 gallons Pressure drop calculations: Darcy-Weisbach method. Calculated: 15 iterations Avg Deviation: 0.003831 % SPECIFICATIONS Specification Material 1 Schedule Roughness Sizing Design Limits 88SX(STD) 8yronPipes-NHL 1 STD 0.036 in not specified Valves: standard C: 100 88SX (XS) 8yronPipes-NHL 1 XS 0.036 in not specified Valves: standard C: 100 Steel Sch. 10 Steel A53-836 .10 110 0.036 in not specified Valves: standard C: 140 Steel Sch. 20 Steel A53-836.10 120 0.036 in not specified Valves: standard C: 140 Steel Sch. 30 Steel A53-836.1 0 130 0.036 in not specified Valves: standard C: 140 Steel Sch. 40 Steel A53-836.10 140 0.036 in not specified Valves: standard C: 140 Steel Std Steel A53-836 .10 120 0.036 in not specified Valves: standard C: 140 FLUID ZONES Fluid Zone Fluid Temp Pressure Density Viscosity Pv 1 Pc or k (OF) (psi g) (lblfP) cP (psi a) Water Water 77 14.7 62.33 0.8883 0.4595/3198 PIPE-FLO 2005 pg 1

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIX A Page A2 PIPELINES 06/24/10 9:11 am Pipeline From To Status Flow Velocity dP HL (US gpm) (ft/sec) (psi) (ft) Specification Fluid Zone Size Length K (in) (ft) AA SX Pump 1A 19034 6.262 (9.039) 0.935 BBSX (STD) Water 36 71.2 1.054 12 BU CR Ref. Cond OA 1225 7.866 3.66 19.11 Steel Sch . 40 Water 8 229.5 9.66 154 BF BG 1591 6.478 7.786 5.327 Steel Sch . 40 Water 10 70.35 5.837 155 BG BH 3055 7.114 1.239 2.863 Steel Sch. 30 Water 14 129 0.644 156 BH BI 4550 10.6 1.002 2.316 Steel Sch . 30 Water 14 42.14 0.352 157 BI BJ 5962 10.48 9.212 8.163 Steel Sch. 30 Water 16 205.5 0.804 158 BJ Cont. Ref. 1A XXX BBSX (STD) Water 12 17.25 1.295 160 Cant. Ref. 1A BM o o o o Steel Sch. 20 Water 12 23.5 1.835 161 BJ BM 5962 10.48 0.733 1.695 Steel Sch . 30 Water 16 12.66 0.749 162 BM BT 5962 10.48 (6.652) 2.973 Steel Sch. 30 Water 16 47 0.833 164 BT BY 7833 8.642 (7.94) 1.146 Steel Sch . 20 Water 20 37 0.454 165 BX BY 1618 6.589 0.549 1.269 Steel Sch. 40 Water 10 5.33 1.707 166 BY GD 9451 10.43 (5.111) 3.935 Steel Sch . 20 Water 20 43.5 1.705 167 BO BP 2146 8.738 12.41 7.273 Steel Sch. 40 Water 10 125.4 1.97 168 BP DGJWC-1A 1871 7.62 9.213 31.46 Steel Sch . 40 Water 10 118.5 30.98 170 DGJWC-1A BS 1871 7.62 25.83 59.6 Steel Sch. 40 Water 10 111 .5 62.45 171 BS BT 1871 7.62 (6.124) 5.093 Steel Sch. 40 Water 10 82.25 2.916 172 BO IA 20 0.222 (1 .187) 0.006 Steel Sch. 40 Water 6 81.33 2.002 173 IA IB XXX Steel Sch. 40 Water 6 0.25 0.633 176 AA SX Pump 2A XXX BBSX (STD) Water 36 97.75 1.875 178 SX Pump 2A CD XXX BBSX(STD) Water 36 33.8 1.345 179 CD CE o o o o BBSX(STD) Water 36 0.01 3.278 180 CE CF o o o o BBSX(STD) Water 36 6.2 0.326 181 CF DA 6053 6.678 22.72 3.023 Steel Sch. 20 Water 20 145.8 2.257 182 DA DO 352.9 0.822 3.681 0.009 Steel Sch. 30 Water 14 8.5 0.606 183 DO DP 20 0.047 o o Steel Sch . 30 Water 14 3.25 0.439 233 DA DB 5700 10.02 15.6 13.07 Steel Sch. 30 Water 16 227.5 3.975 PIPE-FLO 2005 pg 2

CALCULATION NO. NED-M ..MSD*009 REVISION NO. SA APPENDIX A Page A3 PIPELINES 06/24/10 9:11 am Pipeline From To Status Flow Velocity dP HL (US gpm) (ft/sec) (psi) (ft) Specification Fluid Zone Size Length K (in) (ft) 234 DB DC 4310 10.04 0.574 1.357 Steel Sch. 30 Water 14 26.07 0.263 235 DC DO 2797 6.514 1.221 2.823 Steel Sch. 30 Water 14 144 0.934 236 DO DE 1386 5.642 (4.955) 1.335 Steel Sch. 40 Water 10 36.95 1.47 25 CR Ref. Cond OA BX 1225 7.866 25.8 76.71 Steel Sch. 40 Water 8 248.6 68.82 3 SX Pump 1A AD 19034 6.262 1.946 1.539 BBSX (STO) Water 36 18.75 2.403 327 DF OG 1386 5.642 6.244 3.783 Steel Sch. 40 Water 10 64.54 5.505 328 DG OH 2797 6.514 1.08 2.497 Steel Sch. 30 Water 14 130.7 0.749 329 DH 01 4310 10.04 1.006 2.325 Steel Sch. 30 Water 14 42.43 0.503 330 DI OJ 5700 10.02 11.11 12.61 Steel Sch. 30 Water 16 223.5 3.757 331 DJ Cont. Ref2A 873.8 2.481 0.918 0.272 BBSX (STD) Water 12 20.75 2.288 333 Cont. Ref2A OM 873.8 2.481 0.009 0.221 BBSX(STO) Water 12 24.5 1.656 334 DJ DM 4826 8.484 2.031 4.694 Steel Sch. 30 Water 16 9.25 4.024 335 DM ON 5700 10.02 (2.108) 1.177 Steel Sch. 30 Water 16 18.5 0.397 336 DN OU 5700 10.02 (4.632) 1.544 Steel Sch. 30 Water 16 31.5 0.38 337 DU DV 5700 6.288 (8.289) 0.340 Steel Sch. 20 Water 20 29.75 0.123 339 DV GC 6033 6.656 (5.093) 3.977 Steel Sch. 20 Water 20 246 2.222 340 DP DO o o 5.948 o Steel Sch. 40 Water 10 101.3 2.816 341 DO OGJWC-2A xxx Steel Sch. 40 Water 10 112.8 32.21 343 DGJWC-2A DT o o (0.757) o Steel Sch. 40 Water 10 115.8 69.77 344 DT OU o o (7.571) o Steel Sch. 40 Water 10 52.25 2.138 345 DP JA 20 0.222 0.545 0.009 Steel Sch. 40 Water 6 110.8 3.04 348 AF AG 9288 3.056 0.054 0.124 BBSX(STO) Water 36 42.25 0.569 349 AG HA 8122 3.881 2.011 0.399 BBSX(STO) Water 30 8.25 1.635 351 HA HB 8000 3.823 8.129 0.289 BBSX(STD) Water 30 62.75 0.736 356 HB CC HX-1 8000 3.823 0.029 0.067 BBSX(STD) Water 30 12.25 0.19 364 CC HX-1 HE 8000 3.823 (3.392) 0.409 BBSX(STD) Water 30 55.75 1.323 367 HE GF 8122 3.881 0.108 0.250 BBSX (STD) Water 30 13.6 0.952 PIPE-FLO 2005 pg 3

CALCULATION NO. NED-M ..MSD ..009 REVISION NO. SA APPENDIX A Page A4 PIPELINES 06/24/10 9:11 am Pipeline From To Status Flow Velocity dP HL (US gpm) (ft/sec) (psi) (tt) Specification Fluid Zone Size Length K (in) (tt) 368 GF GE 16383 3.936 0.054 0.126 88SX (STO) Water 42 20.75 0.407 369 CG CF <--> 6053 1.991 0.005 0.011 88SX (STO) Water 36 4.5 0.146 370 CG HF 16103 7.695 0.602 1.391 88SX (STO) Water 30 3.75 1.482 372 HF CC HX-2 16000 7.646 13.05 1.91 88SX (STO) Water 30 110.8 1.159 384 CC HX-2 HI 16000 7.646 (4.452) 0.309 88SX(STO) Water 30 17.5 0.191 387 HI GI 16000 7.646 0.793 1.833 88SX(STO) Water 30 12 1.919 388 GI GH 11160 2.681 0.006 0.014 88SX (STO) Water 42 8.5 0.081 389 GH GE 11262 2.706 0.112 0.258 88SX (STO) Water 42 123 1.579 390 GE GO 27646 5.116 0.035 0.081 88SX (XS) Water 48 14.75 0.129 391 GO GC 37097 6.866 0.119 0.274 88SX(XS) Water 48 32.25 0.222 393 GC GB 43130 7.982 15.31 6.141 88SX (XS) Water 48 956.2 1.678 394 AH SX Pump 18 16316 5.368 (9.146) 0.688 88SX (STO) Water 36 71 .3 1.054 396 SX Pump 1B AK 16316 12.34 2.047 1.732 Steel Sch. 20 Water 24 7.22 0.651 397 AK AL 16316 5.368 0.634 1.466 88SX(STO) Water 36 0.01 3.278 398 AL AM 16316 5.368 0.070 0.163 88SX{STO) Water 36 6.25 0.322 399 AM EA 9359 10.33 26 7.604 Steel Std Water 20 149 2.446 4 AO AE 19034 6.262 0.863 1.994 88SX{STO) Water 36 0.01 3.278 400 EA EN 3881 9.038 2.002 0.878 Steel Sch. 30 Water 14 3.75 0.606 401 EN EO 2433 5.665 0.108 0.251 Steel Sch. 30 Water 14 2 0.457 402 EO EP 1626 6.622 12.11 4.846 Steel Sch. 40 Water 10 137 2.558 403 EP OGJWC-1B 1901 7.74 11 .79 37.41 Steel Sch. 40 Water 10 223.8 32.8 405 OGJWC-1B ES 1901 7.74 20.26 46.79 Steel Sch . 40 Water 10 209 43.4 406 ES ET 1901 7.74 (8.053) 5.386 Steel Sch. 40 Water 10 86.5 2.916 407 EN EV 1449 5.898 1.653 0.572 Steel Sch. 40 Water 10 5.75 0.868 423 EV CR Ref. 08 1043 6.697 2.234 14.06 Steel Sch. 40 Water 8 233 9.791 425 CR Ref. 08 EY 1043 6.697 28.54 82.97 Steel Sch. 40 Water 8 254.5 107.9 463 EY EZ 1449 5.898 0.451 1.042 Steel Sch. 40 Water 10 4.5 1.78 PIPE-FLO 2005 pg 4

CALCULATION NO. NED-M-MSD-009 REVISION NO. 8A APPENDIX A Page AS PIPELINES 06/24/10 9:11 am Pipeline From To Status Flow Velocity dP HL (US gpm) (ftJsec) (psi) (ft) Specification Fluid Zone Size Length K (in) (ft) 464 EA E8 5478 9.63 13.08 8.485 Steel Sch . 30 Water 16 141 3.161 465 EB EC 4044 9.417 0.545 1.259 Steel Sch. 30 Water 14 28 0.265 466 EC ED 2706 6.301 0.721 2.667 Steel Sch. 30 Water 14 145.8 0.932 467 ED EE 1316 5.359 (5.314) 1.267 Steel Sch. 40 Water 10 48.75 1.216 5 AE AF 19034 6.262 0.098 0.226 BBSX (STO) Water 36 6.75 0.326 514 EH EI 4044 9.417 3.948 3.125 Steel Sch. 30 Water 14 62 0.832 538 EG EH 2706 6.301 0.988 2.284 Steel Sch. 30 Water 14 127 0.748 560 EF EG 1316 5.359 6.996 3.672 Steel Sch. 40 Water 10 69.57 5.919 561 EI EJ 5478 9.63 6.32 7.61 Steel Sch. 30 Water 16 149.5 2.388 562 EJ Cont. Ref. 1B xxx 8BSX (STO) Water 12 27.25 1.491 564 Cont. Ref. 1B EM o o 0.692 o 8BSX(STO) Water 12 32.75 2.28 565 EJ EM 5478 9.63 0.920 2.027 Steel Sch. 30 Water 16 13.5 1.147 566 EM ET 5478 9.63 (9.884) 2.002 Steel Sch. 30 Water 16 44.75 0.523 568 ET EU 7379 8.141 0.193 0.447 Steel Sch. 20 Water 20 11.75 0.265 569 EU EZ 8205 9.053 (6.059) 0.745 Steel Sch. 20 Water 20 17.5 0.333 570 EO IC 806.6 5.177 0.906 3.094 Steel Sch. 40 Water 8 97 3.09 571 IC COOLING WATER BOO .. 806.6 8.965 3.473 10.53 Steel Sch. 40 Water 6 16 7.422 6 AF BA 9746 10.75 23.99 5.959 Steel Std Water 20 85.1 2.094 60 8A BB 5962 10.48 15.85 13.68 Steel Sch. 30 Water 16 214.2 3.871 602 IF IG 806.6 8.965 0.129 0.299 Steel Sch. 40 Water 6 2 0.112 603 IG IH 826.6 9.187 1.904 2.902 Steel Sch. 40 Water 6 22 0.812 604 IH EU 826.6 9.187 2.737 12.08 Steel Sch. 40 Water 6 99 2.903 605 AH SX Pump 2B 28257 9.297 (8.015) 3.304 BBSX (STO) Water 36 87 1.875 607 SX Pump 2B CK 28257 21.37 2.81 3.496 Steel Sch. 20 Water 24 6.82 0.416 608 CK CL 28257 9.297 1.902 4.396 BBSX (STO) Water 36 0.01 3.278 609 CL CM 28257 9.297 0.209 0.484 88SX(STO) Water 36 5.75 0.322 61 8B BC 4550 10.6 0.734 1.698 Steel Sch. 30 Water 14 29.25 0.296 PIPE-FLO 2005 pg 5

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIX A Page A6 PIPELINES 06/24/10 9:11 am Pipeline From To Status Flow Velocity dP HL (US gpm) (ftJsec) (psi) (ft) Specification Fluid Zone Size Length K (in) (ft) 610 CM FA 6003 6.622 23.63 2.216 Steel Sch. 20 Water 20 87.75 1.986 611 FA FQ 338.7 0.789 1.733 0.007 Steel Sch. 30 Water 14 4 0.607 612 FQ FR o o o o Steel Sch. 30 Water 14 3.25 0.457 613 FR FS xxx Steel Sch. 40 Water 10 83 2.371 614 FS OGJWC-2B xxx Steel Sch. 40 Water 10 162.3 31.43 616 OGJWC-2B FV o o (1.622) o Steel Sch. 40 Water 10 142.3 125.2 617 FV FP o o (8.76) o Steel Sch. 40 Water 10 59.5 2.595 62 BC BO 3055 7.114 1.458 3.37 Steel Sch. 30 Water 14 144.4 0.932 63 BO BE 1591 6.478 (3.872) 1.86 Steel Sch. 40 Water 10 50.04 1.188 670 FA FB 5664 9.957 13.23 8.741 Steel Sch. 30 Water 16 138.9 2.988 671 FB FC 4267 9.937 0.622 1.439 Steel Sch. 30 Water 14 27.57 0.299 672 FC FD 2867 6.677 1.299 2.993 Steel Sch. 30 Water 14 145.8 0.932 673 FO FE 1420 5.783 (4.83) 1.436 Steel Sch. 40 Water 10 46.25 1.224 7 BA BN 3784 4.175 3.784 0.247 Steel Sch. 20 Water 20 6.5 0.819 711 FI FJ 4267 9.937 3.92 3.06 Steel Sch. 30 Water 14 59 0.628 725 FH FI 2867 6.677 1.155 2.67 Steel Sch. 30 Water 14 133.5 0.751 747 FF FH 1420 5.783 7.989 3.967 Steel Sch. 40 Water 10 65.35 5.466 748 FJ FK 5664 9.957 6.577 8.204 Steel Sch. 30 Water 16 152.3 2.379 749 FK Cont. Ref2B 942.1 2.675 0.145 0.235 BBSX(STO) Water 12 27.75 1.375 751 Cont. Ref 2B FN 942.1 2.675 0.781 0.306 BBSX(STD) Water 12 30.75 1.93 752 FK FN 4722 8.301 2.193 5.07 Steel Sch. 30 Water 16 15.25 4.447 753 FN FO 5664 9.957 (2.958) 0.913 Steel Sch. 30 Water 16 15.75 0.288 754 FO FP 5664 9.957 (6.785) 1.316 Steel Sch. 30 Water 16 30.75 0.259 759 FP FW 5664 6.249 0.097 0.224 Steel Sch . 20 Water 20 7.25 0.265 760 FW FX 5684 6.271 (6.221) 0.369 Steel Sch. 20 Water 20 23.5 0.265 761 FR JB o o (0.498) o Steel Sch . 40 Water 8 106.5 3.998 762 JB COOLING WATER BOO .. o o (1.082) o Steel Sch. 40 Water 6 22.25 7.422 PIPE*FLO 2005 pg 6

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIX A Page A7 PIPELINES 06/24/10 9:11 am Pipeline From To Status Flow Velocity dP HL (US gpm) (ftJsec) (psi) (ft) Specification Fluid Zone Size Length K (in) (ft) 792 JE JF o o (2 .596) o Steel Sch. 40 Water 6 16.5 1.557 793 JF FW 20 0.222 (1 .724) 0.014 Steel Sch. 40 Water 6 170.8 5.01 794 AM AO 6957 2.289 0.006 0.014 BBSX(STO) Water 36 4.5 0.146 795 AN AO <--> 1043 0.343 o o BBSX (STO) Water 36 2.5 0.097 8 BN BO 2166 5.044 0.082 0.191 Steel Sch. 30 Water 14 1.83 0.44 809 AP CC HX-O 8000 3.823 12.8 0.596 BBSX (STO) Water 30 107.3 1.705 810 CC HX-O HK 8000 3.823 o o BBSX(STO) Water 30 0.01 o 811 HK HL 8000 3.823 (2.963) 0.402 BBSX(STO) Water 30 27.75 1.532 812 HL HM 4945 2.363 0.019 0.044 BBSX(STO) Water 30 12.5 0.394 813 HM GG 5067 2.421 (1.351) 0.127 BBSX(STO) Water 30 24.75 1.179 814 HL HN <--> 3055 1.46 (1 .382) 0.057 BBSX (STO) Water 30 89.75 0.919 815 HN GJ 3155 1.507 0.016 0.037 BBSX(STO) Water 30 10.5 0.952 816 GG GF 8261 1.985 0.024 0.055 BBSX (STO) Water 42 23.25 0.766 817 GI GJ <-> 4840 1.163 0.006 0.015 BBSX (STO) Water 42 29 0.547 818 EZ GL 9654 10.65 (1 .976) 9.333 Steel Sch. 20 Water 20 213.5 2.221 819 GK GG 3194 0.767 0.008 0.018 BBSX (STO) Water 42 104.8 1.34 820 GJ GK <-> 7995 1.921 0.026 0.059 BBSX (STO) Water 42 19.75 0.92 821 GK GL <--> 4801 0.889 0.804 0.009 BBSX(XS) Water 48 45.75 0.48 822 CM CN 22255 7.322 0.064 0.147 BBSX (STO) Water 36 4.5 0.146 823 CN AQ 99.42 0.048 o o BBSX(STO) Water 30 3 1.482 837 GL GM <--> 14455 2.675 0.622 0.037 BBSX (XS) Water 48 23.75 0.222 838 FX GM 6023 6.644 (5 .031) 0.871 Steel Sch. 20 Water 20 12.5 1.091 839 GM GN 20477 3.79 0.005 0.012 BBSX(XS) Water 48 2.25 0.045 840 GN GO 20477 3.79 11 .91 1.541 BBSX (XS) Water 48 1107 1.623 841 CN CG 22155 7.289 0.687 1.588 BBSX (STO) Water 36 90.25 1.315 842 AG AN <--> 1166 0.384 o 0.002 BBSX (STO) Water 36 47.25 0.509 843 FG(A) AA 19034 3.523 (22.45) 1.277 BBSX(XS) Water 48 1021 1.744 PIPE-FLO 2005 pg 7

CALCULATION NO. NED-M-MSD-009 REVISION NO. 8A APPENDIX A Page A8 PIPELINES 06/24/10 9:11 am Pipeline From To Status Flow Velocity dP HL (US gpm) (fUsec) (psi) (tt) Specification Fluid Zone Size Length K (in) (tt) 845 FG(B) AH 44573 8.249 (19.48) 8.15 BBSX (XS) Water 48 1266 1.717 847 GB GA 43130 7.982 8.175 4.396 BBSX (XS) Water 48 747.6 0.902 848 GO GP 20477 3.79 6.691 0.967 BBSX (XS) Water 48 810.6 0.462 849 GP Cell E 283.8 0.215 23.94 21.44 Steel Sch . 20 Water 24 120.1 30005 850 GP KE 20194 3.737 0.029 0.066 BBSX (XS) Water 48 43 0.101 851 KE Cell F 283.4 0.214 23.91 21 .38 Steel Sch . 20 Water 24 120.1 30005 852 KE KF 19910 3.685 0.028 0.065 BBSX(XS) Water 48 43 0.101 853 KF CellG 282.9 0.214 23.89 21 .31 Steel Sch. 20 Water 24 120.1 30005 854 KF KG 19627 3.632 0.027 0.063 BBSX (XS) Water 48 43 0.101 855 KG Cell H 18695 14.14 23.86 21.25 Steel Sch . 20 Water 24 120.1 5.487 856 KG KH 931.9 0.172 19.96 46.14 BBSX (XS) Water 48 153.2 100000 857 GA CeliA 269.7 0.204 20.25 12.92 Steel Sch. 20 Water 24 90.92 20006 858 GA KA 42860 7.932 0.129 0.298 BBSX (XS) Water 48 43 0.101 859 KA Cell B 14048 10.62 20.12 12.62 Steel Sch . 20 Water 24 90.92 6.172 860 KA KB 28812 5.332 0.058 0.135 BBSX (XS) Water 48 43 0.101 861 KB CeliC 13973 10.57 20.07 12.49 Steel Sch. 20 Water 24 90.92 6.172 862 KB KC 14839 2.746 0.014 0.032 BBSX (XS) Water 48 35.75 0.101 863 KC CeliO 13955 10.55 20.05 12.45 Steel Sch. 20 Water 24 90.92 6.172 864 KC KD 883.7 0.164 16.16 37.35 BBSX (XS) Water 48 7.25 90000 865 AO AP 8000 3.823 0.208 0.480 BBSX (STD) Water 30 5.5 2.071 866 AP AO xxx BBSX (STD) Water 30 7 0.89 867 IB IH xxx Steel Sch. 40 Water 6 10.5 11.59 870 BP EP 274.6 1.118 0.006 0.023 Steel Sch . 40 Water 10 4.75 1.007 871 BS ES xxx Steel Sch. 40 Water 10 4.75 1.477 874 DO FS xxx Steel Sch. 40 Water 10 10.5 1.464 875 DT FV xxx Steel Sch. 40 Water 10 12 1.665 897 KH basin-5 479.4 0.363 3.464 0.007 Steel Sch . 20 Water 24 92.83 2.46 PIPE-FLO 2005 pg 8

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIX A Page A9 PIPELINES 06/24/10 9:11 am Pipeline From To Status Flow Velocity dP HL (US gpm) (ftJsec) (psi) (tt) Specification Fluid Zone Size Length K (in) (tt) 898 KH basin-4 452.5 0.342 3.464 0.007 Steel Sch. 20 Water 24 77.4 3.097 899 KO basin-4{OO 1} 503 .5 0.381 3.464 0.006 Steel Sch. 20 Water 24 63.92 2.027 9 BN BU 1618 6.589 1.781 0.866 Steel Sch. 40 Water 10 6 1.086 900 KO New Pipe 380.2 0.288 2.38 0.002 Steel Sch. 20 Water 24 29.58 1.312 900-1 New Pipe Basin-3 380.2 0.420 1.083 0.004 Steel Sch. 20 Water 20 22 1.189 DO AFP-2B LOOP (939) COOLING WATER BOO .. JE xxx Steel Sch. 40 Water 8 0.01 303 00AFP-1B LOOP (938) COOLING WATER BOO .. IF 806.6 5.177 40.01 91.48 Steel Sch. 40 Water 8 0.01 220 RCFC-1A (914) BO BG 1464 9.397 34.08 91.78 Steel Sch. 40 Water 8 0.01 67 RCFC-1A (915) BE BF 1591 10.21 30.17 84.59 Steel Sch. 40 Water 8 0.01 52.3 RCFC-1B (922) ED EG 1390 8.921 34.44 91 .6 Steel Sch . 40 Water 8 0.Q1 74.2 RCFC-1B (923) EE EF 1316 8.447 32.75 86.66 Steel Sch . 40 Water 8 0.01 78.3 RCFC-1C (912) BB BI 1412 9.061 38.51 102 Steel Sch. 40 Water 8 0.01 80. 1 RCFC-1C (913) BC BH 1495 9.597 36.78 98.01 Steel Sch. 40 Water 8 0.01 68.6 RCFC-10 (920) EB EI 1434 9.204 40.64 100.9 Steel Sch. 40 Water 8 0.01 76.8 RCFC-1D (921) EC EH 1338 8.587 36.15 96.55 Steel Sch. 40 Water 8 0.01 84.4 RCFC-2A (918) DO OG 1412 9.06 15.86 49.66 Steel Sch . 40 Water 8 0.01 39 RCFC-2A (919) DE OF 1386 8.893 14.57 44.54 Steel Sch. 40 Water 8 0.01 36.3 RCFC-2B (926) FO FH 1447 9.289 21.3 62.24 Steel Sch. 40 Water 8 0.01 46.5 RCFC-2B (927) FE FF 1420 9.115 18.14 56.84 Steel Sch. 40 Water 8 0.01 44.1 RCFC-2C (916) DB 01 1390 8.922 19.74 58.66 Steel Sch. 40 Water 8 0.01 47.5 RCFC-2C (917) DC OH 1513 9.708 18.16 54.98 Steel Sch. 40 Water 8 0.01 37.6 RCFC-20 (924) FB FJ 1396 8.963 28.3 72.4 Steel Sch. 40 Water 8 0.01 58.1 RCFC-20 (925) FC FI 1400 8.987 23.76 67.9 Steel Sch. 40 Water 8 0.01 54.2 SX CC'S & OC-1A (932) HA HE 121 .9 3.075 66.34 138.6 Steel Sch. 40 Water 4 0.01 945 SX CC'S & OC-1B (934) AN HM 122.6 3.093 69.78 139.1 Steel Sch. 40 Water 4 0.01 937.1 SX CC'S & OC-2A (933) HF GH 102.6 2.587 50.22 97.09 Steel Sch. 40 Water 4 0.01 935.1 SX CC'S & OC-2B (935) AQ HN 99.42 2.508 51 .5 100 Steel Sch. 40 Water 4 0.01 1026 PIPE-FLO 2005 pg 9

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIX A Page A10 PIPELINES 06/24/10 9:11 am Pipeline From To Status Flow Velocity dP HL (US gpm) (ft/sec) (psi) (ft) Specification Fluid Zone Size Length K (in) (ft) Train 1A (928) BU BX 392.7 2.52 43.61 127.3 Steel Sch . 40 Water 8 0.01 1292 TRAIN 1B (930) EV EY 405.2 2.601 41 .1 119.8 Steel Sch. 40 Water 8 0.01 1142 TRAIN 2A (929) DO DV 332.9 2.136 29.78 92.08 Steel Sch. 40 Water 8 0.01 1301 TRAIN 2B (931) FQ FX 338.7 2.174 32.7 97.23 Steel Sch. 40 Water 8 0.Q1 1326 PIPE-FLO 2005 pg 10

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIX A Page A11 NODES 06/24/10 9:11 am Node Elev Status Pressure Grade (ft) (psi g) (ft) AA 354.33 22.45 406.2 AD 335.75 113.4 597 .9 AE 335.75 112.6 595.9 AF 335.75 112.5 595.7 AG 335.75 112.4 595.6 AH 354.33 19.48 399.3 AK 335.75 113.1 597.2 AL 335.75 112.5 595.8 AM 335.75 112.4 595.6 AN 335.75 112.4 595.6 AO 335.75 112.4 595.6 AP 335.75 112.2 595.1 AO 335.75 95.52 556 .5 BA 385.25 88.47 589.7 BB 408.22 72.61 576.1 BC 408.22 71 .88 574.4 BD 408.22 70.42 571 BE 397.41 74 .29 569.1 BF 382.55 44.13 484.5 BG 395.22 36.34 479.2 BH 395.22 35.1 476.4 BI 395.22 34.1 474 BJ 408.35 24 .89 465.9 BM 408.35 24.15 464.2 BN 393.75 84 .68 589.5 BO 393.75 84.6 589.3 BP 415.16 72 .19 582 BS 409.25 24 .68 466.3 BT 390 30 .81 461.2 BU 397 82.9 588.6 BX 370.5 39.3 461 .3 BY 370.5 38.75 460.1 CD 335.75 94.82 554.9 CE 335.75 94.82 554.9 CF 335.75 94.82 554.9 CG 335.75 94.83 555 CK 335.75 97.69 561.6 CL 335.75 95.79 557.2 CM 335.75 95.58 556.7 CN 335.75 95.52 556.5 COOLING WATER BOOSTER PUMP-1 .. 388.5 79.92 573.2 COOLING WATER BOOSTER PUMP-2 .. 388.5 71 .8 554.5 DA 385.25 72.1 551.9 DB 408.25 56 .5 538.9 DC 408.22 55.93 537.5 DO 408.22 54 .71 534.7 DE 395.43 59.66 533.3 OF 384.57 45.09 488.8 DG 395.22 38.85 485 DH 395.22 37.77 482.5 01 395.22 36.76 480.2 OJ 408.3 25.65 467.6 OM 408.3 23.62 462.9 ON 402.25 25.73 461 .7 DO 393.75 68.42 551.9 DP 393.75 68.42 551 .9 DO 407.5 62.47 551.9 DT 407.5 22.79 460.2 DU 390 30.36 460.2 DV 370.5 38 .65 459.8 EA 388.25 86.41 588 EB 410 73.33 579.5 PIPE-FLO 2005 pg 11

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIX A Page A12 NODES 06/24/10 9:11 am Node Elev Status Pressure Grade (ft) (psi g) (ft) EC 410 72.78 578.2 ED 409 72.06 575.6 EE 395.45 77.38 574.~ EF 384.5 44 .62 487.6 EG 397 37.63 484 EH 397 36.64 481.7 EI 403 32.69 478.6 EJ 410 26.37 471 EM 410.1 25.45 468.9 EN 392 84.41 587.1 EO 392 84 .3 586.9 EP 415.15 72.19 582 ES 409.25 27.28 472.3 ET 385.25 35.33 466.9 EU 385.25 35.14 466.5 EV 395.25 82.75 586.5 EY 370.5 41 .65 466.8 EZ 370.5 41 .2 465.7 FA 388.15 71 .95 554.5 FB 409.99 58.72 545.7 FC 409.99 58.1 544.3 FD 410 56.8 541.3 FE 397.4 61 .63 539.9 FF 382.5 43.49 483 FH 397 35.5 479.1 FI 397 34.35 476.4 FJ 403 30.43 473.3 FK 410 23.85 465.1 FN 410 21 .66 460.1 FO 402.25 24.61 459.1 FP 385.25 31 .4 457.8 FQ 392.15 70.22 554.5 FR 392.15 70 .22 554.5 FV 405.5 22.64 457.8 FW 385.25 31.3 457.6 FX 370.5 37.52 457.2 GA 398.5 20.25 445.3 GB 384 28.43 449.7 GC 354.75 43.74 455.9 GO 354.75 43.86 456.1 GE 354.75 43.89 456.2 GF 354.75 43.95 456.3 GG 354.75 43.97 456.4 GH 354.75 44 456.5 GI 354.75 44.01 456.5 GJ 354.75 44 456.5 GK 354.75 43.98 456.4 GL 356.6 43.17 456.4 GM 358 42.55 456.4 GN 358 42.55 456.4 GO 384 30.63 454.8 GP 398.5 23.94 453.8 HA 340 110.4 595.2 HE 354.75 44 .06 456.6 HF 335.75 94.23 553.6 HL 358 42.64 456.6 HM 358 42.62 456.5 HN 354.75 44.02 456.5 IC 391 83.39 583.8 IF 389.5 39.91 481.8 IH 391 37.88 478.6 JB 391 70.72 554.5 PIPE-FLO 2005 pg 12

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIX A Page A13 NODES 06/24/10 9:11 am Node Elev Status Pressure Grade (ft) (psi g) (ft) JE 395.25 26.98 457.6 KA 398.5 20.12 445 KB 398.5 20.07 444.9 KC 398.5 20.05 444.9 KD 398.5 3.896 407.5 KE 398.5 23.91 453.8 KF 398.5 23.89 453.7 KG 398.5 23.86 453.6 KH 398.5 3.897 407.5 New Pipe 404 1.516 407.5 PIPE-FLO 2005 pg 13

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIX A Page A14 PUMPS 06/24/10 9:11 am Pump Flow Status Total head dP Speed NPSHa Suction Discharge Suction Discharge (US gpm) (ft) (psi) (rpm) (ft) (psi g) (psi g) (ft) (ft) SX Pump 1A 19034 (194.2) (84) 105.7 31.49 115.4 332.5 332.79

                           <no catalog data available>

SX Pump 1B 16316 (200.3) (86.65) 99.08 28.62 115.2 332.5 332.75

                           <no catalog data available>

SX Pump 2B 28257 (169) (73.12) 96.46 27.49 100.5 332.5 332.75

                           <no catalog data available>

COMPONENTS Component Flow Status Head Loss dP Inlet Outlet Inlet Outlet (US gpm) (ft) (psi) (psi g) (psi g) (ft) (ft) CC HX~O 8000 12.25 5.3 99.39 93.88 364.75 365.25 CC HX~1 8000 12.25 5.3 47.91 40.66 358.5 363 CC HX-2 16000 24.5 10.6 81.18 70 364 365.35 Cont. Ref2A 873.8 4.201 1.817 24.73 23.63 410.15 408.5 Cont. Ref2B 942.1 4.529 1.959 23.7 22.44 410.1 408.5 Cont. Ref. 1A Off 410.1 408.35 Cont. Ref. 1B Off 410.1 408.5 CR Ref. OB 1043 22.73 9.834 80.52 70.19 386.35 387.5 CR Ref. Cond OA 1225 31.48 13.62 79.24 65.1 386.35 387.56 DGJWC-1A 1871 24.68 10.68 62.98 50.51 405 409.15 DGJWC~1B 1901 25.5 11.03 60.39 47.54 405 409.2 DGJWC-2A Off 405.5 409.25 DGJWC~2B Off 405.5 409.25 CONTROLS Control Set Value Elev Flow Status dP HL Inlet Outlet (ft) (US gpm) (psi) (ft) (psi g) (psi g) HB FCV: 8000 358.5 8000 54.33 125.6 102.3 47.94

                           <no catalog data available>

HI FCV: 16000 354.75 16000 29.64 68.52 74.45 44.8

                           <no catalog data available>

HK FCV: 8000 365.25 8000 54.2 125.3 93.88 39.68

                           <no catalog data available>

PIPE~FLO 2005 pg 14

CALCULATION NO. NED-M-MSD ..OO9 REVISION NO. SA APPENDIX A Page A15 TANKS 06/24/10 9:11 am Tank Surface Pressure Level Bottom Elevation Status Flow Pressure Grade (psi g) (ft) (ft) (US gpm) (psi) (ft) Basin-3 0 406.5 380.2 0.433 407.5 Connecting pipelines Flow (US gpm) Pressure (psi g) Grade (ft) 900-1 @ 0 ft 380.2 0.433 407.5 Infinite tank/no geometry basin-4 0 406.5 452.5 0.433 407.5 Connecting pipelines Flow (US gpm) Pressure (psi g) Grade (ft) 898@Oft 452.5 0.433 407.5 Infinite tank/no geometry basin-4{001} 0 406.5 503.5 0.433 407.5 Connecting pipelines Flow (US gpm) Pressure (psi g) Grade (ft) 899@Oft 503.5 0.433 407.5 Infinite tank/no geometry basin-5 0 406.5 479.4 0.433 407.5 Connecting pipelines Flow (US gpm) Pressure (psi g) Grade (ft) 897@Oft 479.4 0.433 407.5 Infinite tank/no geometry CeliA 0 0 432.4 269.7 0 432.4 Connecting pipelines Flow (US gpm) Pressure (psi g) Grade (ft) 857@Oft 269.7 0 432.4 Infinite tank/no geometry CeliB 0 0 432.4 14048 0 432.4 Connecting pipelines Flow (US gpm) Pressure (psi g) Grade (ft) 859@Oft 14048 0 432.4 Infinite tank/no geometry CeliC 0 0 432.4 13973 0 432.4 Connecting pipelines Flow (US gpm) Pressure (psi g) Grade (ft) 861 @Oft 13973 0 432.4 Infinite tank/no geometry Cell D 0 0 432.4 13955 0 432.4 Connecting pipelines Flow (US gpm) Pressure (psi g) Grade (ft) 863@Oft 13955 0 432.4 Infinite tank/no geometry CeliE 0 0 432.4 283.8 0 432.4 Connecting pipelines Flow (US gpm) Pressure (psi g) Grade (ft) 849@Oft 283.8 0 432.4 Infinite tank/no geometry Cell F 0 0 432.4 283.4 0 432.4 Connecting pipelines Flow (US gpm) Pressure (psi g) Grade (ft) 851 @ 0 ft 283.4 0 432.4 Infinite tank/no geometry CeliG 0 0 432.4 282.9 0 432.4 Connecting pipelines Flow (US gpm) Pressure (psi g) Grade (ft) 853@Oft 282.9 0 432.4 Infinite tank/no geometry PIPE-FLO 2005 pg 15

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIX A Page A16 TANKS 06/24/10 9:11 am Tank Surface Pressure Level Bottom Elevation Status Flow Pressure Grade (psi g) (ft) (ft) (US gpm) (psi) (ft) Cell H o o 432.4 18695 0 432.4 Connecting pipelines Flow (US gpm) Pressure (psi g) Grade (ft) 855@Oft 18695 0 432.4 Infinite tank/no geometry FG(A) o o 407.5 -19034 0 407.5 Connecting pipelines Flow (US gpm) Pressure (psi g) Grade (ft) 843@Oft 19034 0 407.5 Infinite tank/no geometry FG(B) o o 407.5 -44573 0 407.5 Connecting pipelines Flow (US gpm) Pressure (psi g) Grade (ft) 845@Oft 44573 0 407.5 Infinite tank/no geometry DEMANDS Demand Set Value Flow Rate Pressure Elev Status Grade (US gpm) (psi g) (ft) (ft) IA Flow out 20 85.79 391 589.3 IG Flow in 20 39.78 389.5 481.5 JA Flow out 20 67.88 395 551 .9 JF Flow in 20 29.58 389.25 457.6 PIPE-FLO 2005 pg 16

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIX A Page A17 NOTES 06/24/10 9:11 am SPECIFICATIONS FLUID ZONES PIPELINES NODES PUMPS COMPONENTS CONTROLS TANKS DEMANDS PIPE-FLO 2005 pg 17

CALCULATION NO. NED-M-MSD-009 REVISION NO. 8A APPENDIX A Page A18 System: Scenario 8D1 06/24/10 9:22 am Lineup: Scenario 8D1 Company: Sargent & Lundy LLC rev: 06/24/10 9:22 am Project: Atm pressure: 14.7 psi a LIST REPORT Total System Volume: 737326 gallons Pressure drop calculations: Darcy-Weisbach method. Calculated: 14 iterations Avg Deviation: 0.007847 % SPECIFICATIONS Specification Material/Schedule Roughness Sizing Design Limits BBSX (STD) ByronPipes-NHL 1 STD 0.036 in not specified Valves: standard C: 100 BBSX (XS) ByronPipes-NHL / XS 0.036 in not specified Valves: standard C: 100 Steel Sch. 10 Steel A53-B36.10 /10 0.036 in not specified Valves: standard C: 140 Steel Sch. 20 Steel A53-B36.10 / 20 0.036 in not specified Valves: standard C: 140 Steel Sch. 30 Steel A53-836.10 130 0.036 in not specified Valves: standard C: 140 Steel Sch. 40 Steel A53-836.1 0 / 40 0.036 in not specified Valves: standard C: 140 Steel Std Steel A53-836.10 120 0.036 in not specified Valves: standard C: 140 FLUID ZONES Fluid Zone Fluid Temp Pressure Density Viscosity Pv 1 Pc or k CF) (psi g) (lb/ft3) cP (psi a) Water Water 82 14.7 62.33 0.8362 0.5413/3198 PIPE-FLO 2005 pg 1

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIX A Page A19 PIPELINES 06/24/10 9:22 am Pipeline From To Status Flow Velocity dP HL (US gpm) (ft/sec) (psi) (ft) Specification Fluid Zone Size Length K (in) (ft) AA SX Pump 1A 19167 6.306 (9.033) 0.948 BBSX (STO) Water 36 71.2 1.054 12 BU CR Ref. Cond OA 1241 7.964 3.866 19.59 Steel Sch. 40 Water 8 229.5 9.66 154 BF BG 1610 6.558 7.842 5.458 Steel Sch. 40 Water 10 70.35 5.837 155 BG BH 3092 7.201 1.268 2.932 Steel Sch. 30 Water 14 129 0.644 156 BH BI 4606 10.73 1.026 2.373 Steel Sch. 30 Water 14 42.14 0.352 157 BI BJ 6035 10.61 9.297 8.362 Steel Sch. 30 Water 16 205.5 0.804 158 BJ Cont. Ref. 1A xxx BBSX (STO) Water 12 17.25 1.295 160 Cont. Ref. 1A BM o o o o Steel Sch. 20 Water 12 23.5 1.835 161 BJ BM 6035 10.61 0.751 1.736 Steel Sch. 30 Water 16 12.66 0.749 162 BM BT 6035 10.61 (6.621) 3.046 Steel Sch . 30 Water 16 47 0.833 164 BT BY 7929 8.748 (7.928) 1.174 Steel Sch. 20 Water 20 37 0.454 165 BX BY 1638 6.671 0.563 1.301 Steel Sch. 40 Water 10 5.33 1.707 166 BY GO 9567 10.56 (5.069) 4.032 Steel Sch . 20 Water 20 43.5 1.705 167 BO BP 2172 8.842 12.48 7.445 Steel Sch. 40 Water 10 125.4 1.97 168 BP OGJWC-1A 1894 7.712 9.545 32.22 Steel Sch. 40 Water 10 118.5 30.98 170 OGJWC-1A BS 1894 7.712 26.45 61.05 Steel Sch. 40 Water 10 111.5 62.45 171 BS BT 1894 7.712 (6.071) 5.216 Steel Sch. 40 Water 10 82.25 2.916 172 BO IA 20 0.222 (1 .187) 0.006 Steel Sch. 40 Water 6 81.33 2.002 173 IA IB xxx Steel Sch. 40 Water 6 0.25 0.633 176 AA SXPump 2A xxx BBSX (STO) Water 36 97.75 1.875 178 SX Pump 2A CD xxx BBSX(STO) Water 36 33.8 1.345 179 CO CE o o o o BBSX (STO) Water 36 0.01 3.278 180 CE CF o o o o BBSX (STO) Water 36 6.2 0.326 181 CF OA 6144 6.779 22.76 3.114 Steel Sch. 20 Water 20 145.8 2.257 182 OA DO 357.9 0.833 3.681 0.009 Steel Sch. 30 Water 14 8.5 0.606 183 DO OP 20 0.047 o o Steel Sch. 30 Water 14 3.25 0.439 233 OA DB 5787 10.17 15.77 13.46 Steel Sch. 30 Water 16 227.5 3.975 PIPE-FLO 2005 pg 2

CALCULATION NO. NED-M-MSD-009 REVISION NO. 8A APPENDIX A Page A20 PIPELINES 06/24/10 9:22 am Pipeline From To Status Flow Velocity dP HL (US gpm) (ft/sec) (psi) (tt) Specification Fluid Zone Size Length K (in) (tt) 234 OB DC 4375 10.19 0.592 1.398 Steel Sch. 30 Water 14 26.07 0.263 235 OC DO 2840 6.613 1.258 2.908 Steel Sch. 30 Water 14 144 0.934 236 00 DE 1407 5.728 (4 .938) 1.376 Steel Sch. 40 Water 10 36.95 1.47 25 CR Ref. Cond OA 8X 1241 7.964 26.64 78.63 Steel Sch. 40 Water 8 248.6 68.82 3 SX Pump 1A AO 19167 6.306 1.956 1.561 BBSX (STO) Water 36 18.75 2.403 327 OF OG 1407 5.728 6.294 3.898 Steel Sch. 40 Water 10 64.54 5.505 328 OG OH 2840 6.613 1.113 2.572 Steel Sch . 30 Water 14 130.7 0.749 329 OH 01 4375 10.19 1.036 2.395 Steel Sch. 30 Water 14 42.43 0.503 330 01 OJ 5787 10.17 11 .28 12.99 Steel Sch. 30 Water 16 223.5 3.757 331 OJ Cont. Ref2A 895.3 2.542 0.924 0.285 BBSX(STO) Water 12 20.75 2.288 333 Cont. Ref 2A OM 895.3 2.542 0.014 0.232 BBSX (STO) Water 12 24.5 1.656 334 OJ OM 4891 8.598 2.086 4.821 Steel Sch. 30 Water 16 9.25 4.024 335 OM ON 5787 10.17 (2.092) 1.213 Steel Sch . 30 Water 16 18.5 0.397 336 ON OU 5787 10.17 (4.611) 1.591 Steel Sch. 30 Water 16 31.5 0.38 337 OU OV 5787 6.384 (8.284) 0.350 Steel Sch. 20 Water 20 29.75 0.123 339 OV GC 6124 6.757 (5.041) 4.097 Steel Sch. 20 Water 20 246 2.222 340 OP 00 o o 5.948 o Steel Sch . 40 Water 10 101 .3 2.816 341 00 OGJWC-2A xxx Steel Sch. 40 Water 10 112.8 32.21 343 OGJWC-2A OT o o (0.757) o Steel Sch. 40 Water 10 115.8 69.77 344 OT OU o o (7.57) o Steel Sch . 40 Water 10 52.25 2.138 345 OP JA 20 0.222 0.545 0.009 Steel Sch. 40 Water 6 110.8 3.04 348 AF AG 9302 3.06 0.054 0.125 BBSX (STO) Water 36 42.25 0.569 349 AG HA 8123 3.882 2.011 0.399 BBSX (STO) Water 30 8.25 1.635 351 HA HB 8000 3.823 8.128 0.289 B8SX(STO) Water 30 62.75 0.736 356 HB CC HX-1 8000 3.823 0.029 0.067 BBSX (STO) Water 30 12.25 0.19 364 CC HX-1 HE 8000 3.823 (3.392) 0.409 BBSX (STO) Water 30 55.75 1.323 367 HE GF 8123 3.882 0.108 0.250 BBSX (STO) Water 30 13.6 0.952 PIPE-FLO 2005 pg 3

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIX A Page A21 PIPELINES 06/24/10 9:22 am Pipeline From To Status Flow Velocity dP HL (US gpm) (ft/sec) (psi) (ft) Specification Fluid Zone Size Length K (in) (ft) 368 GF GE 17528 4.211 0.062 0.144 BBSX (STO) Water 42 20.75 0.407 369 CG CF <--> 6144 2.022 0.005 0.011 BBSX(STO) Water 36 4.5 0.146 370 CG HF 16104 7.695 0.602 1.391 BBSX (STO) Water 30 3.75 1.482 372 HF CC HX-2 16000 7.646 13.05 1.91 BBSX(STO) Water 30 110.8 1.159 384 CC HX-2 HI 16000 7.646 (4.452) 0.309 BBSX (STO) Water 30 17.5 0.191 387 HI GI 16000 7.646 0.793 1.833 BBSX(STO) Water 30 12 1.919 388 GI GH 11854 2.848 0.007 0.016 BBSX (STO) Water 42 8.5 0.081 389 GH GE 11959 2.873 0.126 0.291 BBSX(STO) Water 42 123 1.579 390 GE GO 29487 5.457 0.040 0.092 BBSX (XS) Water 48 14.75 0.129 391 GO GC 39054 7.228 0.131 0.304 BBSX(XS) Water 48 32.25 0.222 393 GC GB 45178 8.361 15.57 6.735 BBSX(XS) Water 48 956.2 1.678 394 AH SX Pump 1B 16418 5.402 (9.142) 0.697 BBSX(STO) Water 36 71.3 1.054 396 SX Pump 1B AK 16418 12.42 2.056 1.753 Steel Sch. 20 Water 24 7.22 0.651 397 AK AL 16418 5.402 0.642 1.484 BBSX (STO) Water 36 0.01 3.278 398 AL AM 16418 5.402 0.071 0.165 BBSX(STO) Water 36 6.25 0.322 399 AM EA 9472 10.45 26.08 7.788 Steel Std Water 20 149 2.446 4 AO AE 19167 6.306 0.875 2.022 BBSX(STO) Water 36 0.01 3.278 400 EA EN 3928 9.148 2.011 0.900 Steel Sch. 30 Water 14 3.75 0.606 401 EN EO 2462 5.734 0.111 0.257 Steel Sch. 30 Water 14 2 0.457 402 EO EP 1646 6.703 12.16 4.964 Steel Sch . 40 Water 10 137 2.558 403 EP OGJWC-1B 1924 7.833 12.18 38.31 Steel Sch. 40 Water 10 223.8 32.8 405 OGJWC-1B ES 1924 7.833 20.75 47.92 Steel Sch . 40 Water 10 209 43.4 406 ES ET 1924 7.833 (7.997) 5.514 Steel Sch. 40 Water 10 86.5 2.916 407 EN EV 1466 5.969 1.659 0.586 Steel Sch. 40 Water 10 5.75 0.868 423 EV CR Ref. OB 1056 6.776 2.377 14.39 Steel Sch. 40 Water 8 233 9.791 425 CR Ref. OB EY 1056 6.776 29.39 84.94 Steel Sch . 40 Water 8 254.5 107.9 463 EY EZ 1466 5.969 0.461 1.067 Steel Sch. 40 Water 10 4.5 1.78 PIPE-FLO 2005 pg 4

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIX A Page A22 PIPELINES 06/24/10 9:22 am Pipeline From To Status Flow Velocity dP HL (US gpm) (ft/sec) (psi) (tt) Specification Fluid Zone Size Length K (in) (tt) 464 EA EB 5544 9.746 13.17 8.689 Steel Sch. 30 Water 16 141 3.161 465 EB EC 4093 9.531 0.558 1.289 Steel Sch. 30 Water 14 28 0.265 466 EC EO 2739 6.377 0.748 2.73 Steel Sch. 30 Water 14 145.8 0.932 467 ED EE 1332 5.424 (5.3) 1.298 Steel Sch . 40 Water 10 48.75 1.216 5 AE AF 19167 6.306 0.099 0.229 BBSX (STO) Water 36 6.75 0.326 514 EH EI 4093 9.531 3.98 3.2 Steel Sch. 30 Water 14 62 0.832 538 EG EH 2739 6.377 1.011 2.338 Steel Sch . 30 Water 14 127 0.748 560 EF EG 1332 5.424 7.034 3.761 Steel Sch. 40 Water 10 69.57 5.919 561 EI EJ 5544 9.746 6.399 7.793 Steel Sch. 30 Water 16 149.5 2.388 562 EJ Cont. Ref. 1B xxx BBSX(STO) Water 12 27.25 1.491 564 Cant. Ref. 1B EM o o 0.692 o BBSX (STO) Water 12 32.75 2.28 565 EJ EM 5544 9.746 0.941 2.076 Steel Sch. 30 Water 16 13.5 1. 147 566 EM ET 5544 9.746 (9.863) 2.05 Steel Sch . 30 Water 16 44.75 0.523 568 ET EU 7468 8.239 0.198 0.458 Steel Sch. 20 Water 20 11 .75 0.265 569 EU EZ 8304 9.162 (6.051) 0.763 Steel Sch. 20 Water 20 17.5 0.333 570 EO IC 816.4 5.24 0.938 3.168 Steel Sch. 40 Water 8 97 3.09 571 IC COOLING WATER BOO .. 816.4 9.074 3.584 10.78 Steel Sch. 40 Water 6 16 7.422 6 AF BA 9865 10.88 24.05 6.104 Steel Std Water 20 85.1 2.094 60 BA BB 6035 10.61 16 14.01 Steel Sch. 30 Water 16 214.2 3.871 602 IF IG 816.4 9.074 0.132 0.306 Steel Sch. 40 Water 6 2 0.112 603 IG IH 836.4 9.296 1.934 2.97 Steel Sch. 40 Water 6 22 0.812 604 IH EU 836.4 9.296 2.859 12.36 Steel Sch. 40 Water 6 99 2.903 605 AH SX Pump 2B 28439 9.357 (7.996) 3.346 BBSX (STO) Water 36 87 1.875 607 SX Pump 2B CK 28439 21.51 2.829 3.541 Steel Sch. 20 Water 24 6.82 0.416 608 CK CL 28439 9.357 1.926 4.452 BBSX(STO) Water 36 0.01 3.278 609 CL CM 28439 9.357 0.212 0.490 BBSX (STO) Water 36 5.75 0.322 61 BB BC 4606 10.73 0.752 1.739 Steel Sch. 30 Water 14 29.25 0.296 PIPE-FLO 2005 pg 5

CALCULATION NO. NED-M-MSD-009 REVISION NO. 8A APPENDIX A Page A23 PIPELINES 06/24/10 9:22 am Pipeline From To Status Flow Velocity dP HL (US gpm) (ft/sec) (psi) (ft) Specification Fluid Zone Size Length K (in) (ft) 610 CM FA 6090 6.719 23.65 2.281 Steel Sch. 20 Water 20 87.75 1.986 611 FA FQ 343.6 0.800 1.733 0.007 Steel Sch. 30 Water 14 4 0.607 612 FQ FR o o o o Steel Sch. 30 Water 14 3.25 0.457 613 FR FS xxx Steel Sch. 40 Water 10 83 2.371 614 FS OGJWC-2B xxx Steel Sch. 40 Water 10 162.3 31.43 616 OGJWC-2B FV o o (1.622) o Steel Sch. 40 Water 10 142.3 125.2 617 FV FP o o (8.76) o Steel Sch . 40 Water 10 59.5 2.595 62 BC BO 3092 7.201 1.493 3.452 Steel Sch. 30 Water 14 144.4 0.932 63 BO BE 1610 6.558 (3.852) 1.905 Steel Sch. 40 Water 10 50.04 1.188 670 FA FB 5746 10.1 13.34 8.995 Steel Sch. 30 Water 16 138.9 2.988 671 FB FC 4330 10.08 0.640 1.48 Steel Sch. 30 Water 14 27.57 0.299 672 FC FO 2909 6.774 1.336 3.079 Steel Sch. 30 Water 14 145.8 0.932 673 FO FE 1441 5.867 (4.812) 1.477 Steel Sch. 40 Water 10 46.25 1.224 7 BA BN 3830 4.225 3.787 0.253 Steel Sch. 20 Water 20 6.5 0.819 711 FI FJ 4330 10.08 3.958 3.149 Steel Sch. 30 Water 14 59 0.628 725 FH FI 2909 6.774 1.188 2.747 Steel Sch. 30 Water 14 133.5 0.751 747 FF FH 1441 5.867 8.039 4.083 Steel Sch . 40 Water 10 65.35 5.466 748 FJ FK 5746 10.1 6.68 8.443 Steel Sch. 30 Water 16 152.3 2.379 749 FK Cant. Ref2B 964 2.737 0.150 0.246 BBSX (STO) Water 12 27.75 1.375 751 Cont. Ref2B FN 964 2.737 0.787 0.320 BBSX(STO) Water 12 30.75 1.93 752 FK FN 4782 8.407 2.25 5.201 Steel Sch. 30 Water 16 15.25 4.447 753 FN FO 5746 10.1 (2.946) 0.940 Steel Sch. 30 Water 16 15.75 0.288 754 FO FP 5746 10.1 (6.768) 1.354 Steel Sch . 30 Water 16 30.75 0.259 759 FP FW 5746 6.34 0.100 0.231 Steel Sch. 20 Water 20 7.25 0.265 760 FW FX 5766 6.362 (6.216) 0.380 Steel Sch. 20 Water 20 23.5 0.265 761 FR JB o o (0.497) o Steel Sch. 40 Water 8 106.5 3.998 762 JB COOLING WATER BOO .. o o (1 .081) o Steel Sch. 40 Water 6 22.25 7.422 PIPE-FLO 2005 pg 6

CALCULATION NO. NED-M-MSD-009 REVISION NO. 8A APPENDIX A Page A24 PIPELINES 06/24/10 9:22 am Pipeline From To Status Flow Velocity dP HL (US gpm) (ft/sec) (psi) (ft) Specification Fluid Zone Size Length K (in) (ft) 792 JE JF o o (2.596) o Steel Sch. 40 Water 6 16.5 1.557 793 JF FW 20 0.222 (1.724) 0.014 Sleel Sch. 40 Water 6 170.8 5.01 794 AM AO 6946 2.285 0.006 0.014 BBSX (STO) Water 36 4.5 0.146 795 AN AO <--> 1054 0.347 o o BBSX(STO) Water 36 2.5 0.097 8 BN BO 2192 5.103 0.084 0.195 Steel Sch. 30 Water 14 1.83 0.44 809 AP CC HX-O 8000 3.823 12.8 0.596 BBSX(STO) Water 30 107.3 1.705 810 CC HX-O HK 8000 3.823 o o BBSX (STO) Water 30 0.01 o 811 HK HL 8000 3.823 (2.963) 0.401 BBSX (STO) Water 30 27.75 1.532 812 HL HM 4977 2.378 0.019 0.044 BBSX(STO) Water 30 12.5 0.394 813 HM GG 5101 2.438 (1.35) 0.128 BBSX (STO) Water 30 24.75 1.179 814 HL HN <--> 3023 1.444 (1.382) 0.055 BBSX (STO) Water 30 89.75 0.919 815 HN GJ 3124 1.493 0.016 0.036 BBSX (STO) Water 30 10.5 0.952 816 GG GF 9405 2.26 0.031 0.071 BBSX(STO) Water 42 23.25 0.766 817 GI GJ <-> 4146 0.996 0.005 0.011 BBSX(STO) Water 42 29 0.547 818 EZ GL 9770 10.78 (1 .879) 9.556 Steel Sch. 20 Water 20 213.5 2.221 819 GK GG 4303 1.034 0.014 0.032 BBSX (STO) Water 42 104.8 1.34 820 GJ GK <-> 7269 1.747 0.021 0.049 BBSX (STO) Water 42 19.75 0.92 821 GK GL <--> 2966 0.549 0.802 0.003 BBSX(XS) Water 48 45.75 0.48 822 CM CN 22349 7.353 0.064 0.148 BBSX(STO) Water 36 4.5 0.146 823 CN AQ 100.9 0.048 o o BBSX(STO) Water 30 3 1.482 837 GL GM <-> 12736 2.357 0.618 0.029 BBSX (XS) Water 48 23.75 0.222 838 FX GM 6110 6.741 (5.02) 0.897 Steel Sch. 20 Water 20 12.5 1.091 839 GM GN 18846 3.488 0.005 0.011 BBSX(XS) Water 48 2.25 0.045 840 GN GO 18846 3.488 11 .81 1.306 BBSX (XS) Water 48 1107 1.623 841 CN CG 22248 7.32 0.693 1.602 BBSX (STO) Water 36 90.25 1.315 842 AG AN <-> 1178 0.388 o 0.002 BBSX (STO) Water 36 47.25 0.509 843 FG(A) AA 19167 3.547 (22.44) 1.294 BBSX (XS) Water 48 1021 1.744 PIPE-FLO 2005 pg 7

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIX A Page A25 PIPELINES 06/24/10 9:22 am Pipeline From To Status Flow Velocity dP HL (US gpm) (ftJsec) (psi) (ft) Specification Fluid Zone Size Length K (in) (ft) 845 FG(B) AH 44858 8.302 (19.43) 8.251 BBSX (XS) Water 48 1266 1.717 847 GB GA 45178 8.361 8.358 4.821 BBSX (XS) Water 48 747.6 0.902 848 GO GP 18846 3.488 6.627 0.819 BBSX(XS) Water 48 810.6 0.462 849 GP Cell E 260.7 0.1 97 22.49 18.1 Steel Sch . 20 Water 24 120.1 30005 850 GP KE 18585 3.44 0.024 0.056 BBSX (XS) Water 48 43 0.101 851 KE Cell F 260.2 0.197 22.46 18.03 Steel Sch. 20 Water 24 120.1 30005 852 KE KF 18325 3.391 0.024 0.055 BBSX(XS) Water 48 43 0.101 853 KF CeliG 259.8 0.196 22.44 17.97 Steel Sch . 20 Water 24 120.1 30005 854 KF KG 18065 3.343 0.023 0.053 BBSX(XS) Water 48 43 0.101 855 KG Cell H 17168 12.98 22.42 17.92 Steel Sch. 20 Water 24 120.1 5.487 856 KG KH 897.6 0.166 18.52 42.81 BBSX (XS) Water 48 153.2 100000 857 GA CeliA 11220 8.486 18.15 8.052 Steel Sch. 20 Water 24 90.92 6.172 858 GA KA 33958 6.285 0.081 0.187 BBSX (XS) Water 48 43 0.101 859 KA Cell B 11089 8.387 18.07 7.865 Steel Sch . 20 Water 24 90.92 6.172 860 KA KB 22869 4.233 0.037 0.085 BBSX (XS) Water 48 43 0.101 861 KB CeliC 11029 8.341 18.03 7.779 Steel Sch. 20 Water 24 90.92 6.172 862 KB KC 11841 2.191 0.009 0.020 BBSX(XS) Water 48 35.75 0.101 863 KC CeliO 11014 8.33 18.02 7.759 Steel Sch . 20 Water 24 90.92 6.172 864 KC KO 826.3 0.153 14.13 32.65 BBSX (XS) Water 48 7.25 90000 865 AO AP 8000 3.823 0.208 0.480 BBSX (STO) Water 30 5.5 2.071 866 AP AO xxx BBSX(STO) Water 30 7 0.89 867 IB IH xxx Steel Sch . 40 Water 6 10.5 11.59 870 BP EP 277.5 1.13 0.006 0.023 Steel Sch. 40 Water 10 4.75 1.007 871 BS ES xxx Steel Sch. 40 Water 10 4.75 1.477 874 DO FS xxx Steel Sch. 40 Water 10 10.5 1.464 875 OT FV xxx Steel Sch. 40 Water 10 12 1.665 897 KH basin-5 461.8 0.349 3.464 0.007 Steel Sch . 20 Water 24 92.83 2.46 PIPE-FLO 2005 pg 8

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIX A Page A26 PIPELINES 06/24/10 9:22 am Pipeline From To Status Flow Velocity dP HL (US gpm) (ft/sec) (psi) (ft) Specification Fluid Zone Size Length K (in) (ft) 898 KH basin-4 435.8 0.330 3.464 0.007 Steel Sch . 20 Water 24 77.4 3.097 899 KD basin-4{001} 470.8 0.356 3.463 0.006 Steel Sch. 20 Water 24 63.92 2.027 9 BN BU 1638 6.671 1.79 0.888 Steel Sch . 40 Water 10 6 1.086 900 KD New Pipe 355.5 0.269 2.38 0.002 Steel Sch . 20 Water 24 29.58 1.312 900-1 New Pipe Basin-3 355.5 0.392 1.083 0.004 Steel Sch. 20 Water 20 22 1.189 DD AFP-2B LOOP (939) COOLING WATER BOO .. JE xxx Steel Sch. 40 Water 8 0.01 303 DDAFP-1B LOOP (938) COOLING WATER BOO .. IF 816.4 5.24 40.97 93.71 Steel Sch. 40 Water 8 0.01 220 RCFC-1A (914) BD BG 1482 9.512 35.06 94.05 Steel Sch. 40 Water 8 0.01 67 RCFC-1A (915) BE BF 1610 10.34 31.07 86.68 Steel Sch . 40 Water 8 0.01 52.3 RCFC-1B (922) ED EG 1407 9.029 35.4 93.83 Steel Sch . 40 Water 8 0.01 74.2 RCFC-1B (923) EE EF 1332 8.549 33.67 88.77 Steel Sch. 40 Water 8 0.01 78.3 RCFC-1C (912) BB BI 1429 9.172 39.6 104.5 Steel Sch. 40 Water 8 0.01 80.1 RCFC-1C (913) BC BH 1514 9.715 37.82 100.4 Steel Sch. 40 Water 8 0.01 68.6 RCFC-1D (920) EB EI 1451 9.315 41.7 103.4 Steel Sch. 40 Water 8 0.01 76.8 RCFC-1D (921) EC EH 1354 8.691 37.16 98.9 Steel Sch. 40 Water 8 0.01 84.4 RCFC-2A (918) DD DG 1433 9.198 16.52 51.18 Steel Sch. 40 Water 8 0.01 39 RCFC-2A (919) DE DF 1407 9.029 15.16 45.91 Steel Sch. 40 Water 8 0.01 36.3 RCFC-2B (926) FD FH 1468 9.424 22.09 64.07 Steel Sch. 40 Water 8 0.01 46.5 RCFC-2B (927) FE FF 1441 9.248 18.86 58.51 Steel Sch. 40 Water 8 0.01 44.1 RCFC-2C (916) DB DI 1411 9.058 20.52 60.45 Steel Sch . 40 Water 8 0.01 47.5 RCFC-2C (917) DC DH 1536 9.856 18.89 56.66 Steel Sch. 40 Water 8 0.01 37.6 RCFC-2D (924) FB FJ 1417 9.093 29.21 74.52 Steel Sch. 40 Water 8 0.01 58.1 RCFC-2D (925) FC FI 1421 9.117 24.62 69.89 Steel Sch. 40 Water 8 0.01 54.2 SX CC'S & OC-1A (932) HA HE 123.5 3.114 67.87 142.1 Steel Sch. 40 Water 4 0.01 945 SX CC'S & OC-1B (934) AN HM 124.3 3.134 71.39 142.8 Steel Sch. 40 Water 4 0.01 937.1 SX CC'S & OC-2A (933) HF GH 104.1 2.626 51.49 100 Steel Sch. 40 Water 4 0.01 935.1 SX CC'S & OC-2B (935) AQ HN 100.9 2.544 52.77 103 Steel Sch. 40 Water 4 0.01 1026 PIPE-FLO 2005 pg 9

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIX A Page A27 PIPELINES 06/24/10 9:22 am Pipeline From To Status Flow Velocity dP HL (US gpm) (ft/sec) (psi) (ft) Specification Fluid Zone Size Length K (in) (ft) Train 1A (928) BU BX 397.5 2.551 44.96 130.4 Steel Sch . 40 Water 8 0.01 1292 TRAIN 1B (930) EV EY 410.1 2.632 42.36 122.7 Steel Sch . 40 Water 8 0.01 1142 TRAIN 2A (929) DO DV 337.9 2.169 30.98 94.87 Steel Sch. 40 Water 8 0.01 1301 TRAIN 2B (931) FQ FX 343.6 2.206 33.92 100.1 Steel Sch. 40 Water 8 0.01 1326 PIPE-FLO 2005 pg 10

CALCULATION NO. NED-M-MSD-009 REVISION NO. 8A APPENDIX A Page A28 NODES 06/24/10 9:22 am Node Elev Status Pressure Grade (ft) (psi g) (ft) AA 354.33 22.44 406.2 AD 335.75 113.3 597.6 AE 335.75 112.4 595.6 AF 335.75 112.3 595.3 AG 335.75 112.2 595.2 AH 354.33 19.43 399.2 AK 335.75 113 596.9 AL 335.75 112.3 595.4 AM 335.75 112.2 595.2 AN 335.75 112.2 595.2 AO 335.75 112.2 595.2 AP 335.75 112 594.7 AQ 335.75 95.16 555.7 BA 385.25 88.24 589.2 BB 408.22 72.24 575.2 BC 408.22 71.48 573.5 BD 408.22 69.99 570 BE 397.41 73.84 568.1 BF 382.55 42.77 481.4 BG 395.22 34.93 476 BH 395.22 33.66 473 BI 395.22 32.64 470.7 BJ 408.35 23.34 462.3 BM 408.35 22.59 460.6 BN 393.75 84.45 589 BO 393.75 84.36 588.8 BP 415.16 71 .88 581.3 BS 409.25 23.14 462.7 BT 390 29.21 457.5 BU 397 82.66 588.1 BX 370.5 37.7 457.6 BY 370.5 37.14 456.3 CD 335.75 94.46 554.1 CE 335.75 94.46 554.1 CF 335.75 94.46 554.1 CG 335.75 94.46 554.1 CK 335.75 97.36 560.8 CL 335.75 95.43 556.4 CM 335.75 95.22 555.9 CN 335.75 95.16 555.7 COOLING WATER BOOSTER PUMP-1..388.5 79.52 572.3 COOLING WATER BOOSTER PUMP-2 .. 388.5 71.42 553.6 DA 385.25 71.7 551 DB 408.25 55.92 537.5 DC 408.22 55.33 536.1 DO 408.22 54.07 533.2 DE 395.43 59.01 531 .8 OF 384.57 43.85 485.9 DG 395.22 37.56 482 DH 395.22 36.44 479.5 01 395.22 35.41 477.1 OJ 408.3 24 .13 464.1 OM 408.3 22.04 459.3 ON 402.25 24.14 458 DO 393.75 68.02 551 DP 393.75 68.02 551 DQ 407.5 62.07 551 DT 407.5 21.18 456.5 DU 390 28.75 456.5 DV 370.5 37.03 456.1 EA 388.25 86.16 587.4 EB 410 72.99 578.7 PIPE-FLO 2005 pg 11

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIX A Page A29 NODES 06/24/10 9:22 am Node Elev Status Pressure Grade (ft) (psi g) (ft) EC 410 72.44 577.4 ED 409 71 .69 574.7 EE 395.45 76.99 573.4 EF 384.5 43.32 484.6 EG 397 36.29 480.9 EH 397 35.28 478.5 EI 403 31 .3 475.3 EJ 410 24 .9 467.6 EM 410.1 23.96 465.5 EN 392 84 .15 586.5 EO 392 84.04 586.3 EP 415.15 71 .88 581 .3 ES 409.25 25.83 469 ET 385.25 33.83 463.4 EU 385.25 33.63 463 EV 395.25 82.5 586 EY 370.5 40.14 463.3 EZ 370.5 39.68 462.2 FA 388.15 71 .57 553.6 FB 409.99 58.23 544.6 FC 409.99 57.59 543.1 FD 410 56.25 540 FE 397.4 61 .06 538.5 FF 382.5 42.2 480 FH 397 34.16 476 FI 397 32.97 473.2 FJ 403 29.01 470.1 FK 410 22.33 461 .6 FN 410 20 .09 456.4 FO 402.25 23 .03 455.5 FP 385.25 29.8 454.1 FQ 392.15 69.84 553.6 FR 392.15 69.84 553.6 FV 405.5 21.04 454.1 FW 385.25 29.7 453.9 FX 370.5 35.92 453.5 GA 398.5 18.15 440.5 GB 384 26.51 445.3 GC 354.75 42.07 452 GO 354.75 42.2 452.3 GE 354.75 42.24 452.4 GF 354.75 42.31 452.5 GG 354.75 42.34 452.6 GH 354.75 42 .37 452.7 GI 354.75 42.38 452.7 GJ 354.75 42.38 452.7 GK 354.75 42.36 452.7 GL 356.6 41.56 452.7 GM 358 40.94 452.6 GN 358 40.93 452.6 GO 384 29.12 451 .3 GP 398.5 22.49 450.5 HA 340 110.2 594.8 HE 354.75 42.42 452.8 HF 335.75 93.86 552.7 HL 358 41 .01 452.8 HM 358 40.99 452.7 HN 354.75 42.4 452.8 IC 391 83.1 583.1 IF 389.5 38.55 478.6 IH 391 36.49 475.3 JB 391 70.34 553.6 PIPE-FLO 2005 pg 12

CALCULATION NO. NED .. M ..MSD-009 REVISION NO. SA APPENDIX A Page A30 NODES 06/24/10 9:22 am Node Elev Status Pressure Grade (ft) (psi g) (ft) JE 395.25 25.38 453.9 KA 398.5 18.07 440.3 KB 398.5 18.03 440.2 KC 398.5 18.02 440.2 KD 398.5 3.896 407.5 KE 398.5 22.46 450.4 KF 398.5 22.44 450.4 KG 398.5 22.42 450.3 KH 398.5 3.896 407.5 New Pipe 404 1.516 407.5 PIPE-FLO 2005 pg 13

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIX A Page A31 PUMPS 06/24/10 9:22 am Pump Flow Status Total head dP Speed NPSHa Suction Discharge Suction Discharge (US gpm) (ft) (psi) (rpm) (ft) (psi g) (psi g) (ft) (ft) SX Pump 1A 19167 (193.9) (83.87) 105.5 31.48 115.2 332.5 332.79

                           <no catalog data available>

SX Pump 18 16418 (200 .1) (86.55) 98.78 28.57 115 332.5 332.75

                           <no catalog data available>

SX Pump 28 28439 (168.4) (72.87) 96.13 27.43 100.2 332.5 332.75

                           <no catalog data available>

COMPONENTS Component Flow Status Head Loss dP Inlet Outlet Inlet Outlet (US gpm) (ft) (psi) (psi g) (psi g) (ft) (ft) CC HX-O 8000 12.25 5.3 99.22 93.71 364.75 365.25 CC HX-1 8000 12.25 5.3 46.27 39.02 358.5 363 CC HX-2 16000 24.5 10.6 80.81 69.63 364 365.35 Cant. Ref2A 895.3 4.304 1.862 23.21 22.06 410.15 408.5 Cont. Ref 28 964 4.618 1.998 22.18 20.88 410.1 408.5 Cont. Ref. 1A Off 410.1 408.35 Cont. Ref. 18 Off 410.1 408.5 CR Ref. 08 1056 23.33 10.09 80.12 69.53 386.35 387.5 CR Ref. Cond OA 1241 32.21 13.94 78.79 64.33 386.35 387.56 DGJWC-1A 1894 25.31 10.95 62.34 49.59 405 409.15 DGJWC-18 1924 26.12 11 .3 59.7 46.58 405 409.2 DGJWC-2A Off 405.5 409.25 DGJWC-28 Off 405.5 409.25 CONTROLS Control Set Value Elev Flow Status dP HL Inlet Outlet (ft) (US gpm) (psi) (ft) (psi g) (psi g) H8 FCV: 8000 358.5 8000 55.8 129 102.1 46.3

                           <no catalog data available>

HI FCV: 16000 354.75 16000 30.91 71.46 74.08 43.17

                           <no catalog data available>

HK FCV: 8000 365.25 8000 55.66 128.7 93.71 38.04

                           <no catalog data available>

PIPE-FLO 2005 pg 14

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIX A Page A32 TANKS 06/24/10 9:22 am Tank Surface Pressure Level Bottom Elevation Status Flow Pressure Grade (psi g) (tt) (tt) (US gpm) (psi) (tt) Basin-3 0 406.5 355.5 0.433 407.5 Connecting pipelines Flow (US gpm) Pressure (psi g) Grade (ft) 900-1 @ 0 ft 355.5 0.433 407.5 Infinite tank/no geometry basin-4 0 406.5 435.8 0.433 407.5 Connecting pipelines Flow (US gpm) Pressure (psi g) Grade (tt) 898@Oft 435.8 0.433 407.5 Infinite tank/no geometry basin-4{001} 0 406.5 470.8 0.433 407 .5 Connecting pipelines Flow (US gpm) Pressure (psi g) Grade (ft) 899@Oft 470.8 0.433 407.5 Infinite tank/no geometry basin-5 0 406.5 461 .8 0.433 407.5 Connecting pipelines Flow (US gpm) Pressure (psi g) Grade (ft) 897@Oft 461.8 0.433 407.5 Infinite tank/no geometry CeliA 0 0 432.4 11220 0 432.4 Connecting pipelines Flow (US gpm) Pressure (psi g) Grade (tt) 857@Ott 11220 0 432.4 Infinite tank/no geometry Cell B 0 0 432.4 11089 0 432.4 Connecting pipelines Flow (US gpm) Pressure (psi g) Grade (ft) 859@Ott 11089 0 432.4 Infinite tank/no geometry CeliC 0 0 432.4 11029 0 432 .4 Connecting pipelines Flow (US gpm) Pressure (psi g) Grade (tt) 861 @Oft 11029 0 432.4 Infinite tank/no geometry CeliO 0 0 432.4 11014 0 432.4 Connecting pipelines Flow (US gpm) Pressure (psi g) Grade (tt) 863@Oft 11014 0 432.4 Infinite tank/no geometry Cell E 0 0 432.4 260.7 0 432.4 Connecting pipelines Flow (US gpm) Pressure (psi g) Grade (ft) 849@Oft 260.7 0 432.4 Infinite tank/no geometry Cell F 0 0 432.4 260.2 0 432.4 Connecting pipelines Flow (US gpm) Pressure (psi g) Grade (tt) 851 @Oft 260.2 0 432.4 Infinite tank/no geometry CeliG 0 0 432.4 259.8 0 432.4 Connecting pipelines Flow (US gpm) Pressure (psi g) Grade (ft) 853@Oft 259.8 0 432.4 Infinite tank/no geometry PIPE-FLO 2005 pg 15

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIX A Page A33 TANKS 06/24/10 9:22 am Tank Surface Pressure Level Bottom Elevation Status Flow Pressure Grade (psi g) (ft) (ft) (US gpm) (psi) (ft) Cell H o o 432.4 17168 0 432.4 Connecting pipelines Flow (US gpm) Pressure (psi g) Grade (ft) 855@Oft 17168 0 432.4 Infinite tank/no geometry FG(A) o o 407.5 -19167 0 407.5 Connecting pipelines Flow (US gpm) Pressure (psi g) Grade (ft) 843@Oft 19167 0 407.5 Infinite tank/no geometry FG (B) o o 407.5 -44858 0 407.5 Connecting pipelines Flow (US gpm) Pressure (psi g) Grade (ft) 845@Oft 44858 0 407.5 Infinite tank/no geometry DEMANDS Demand Set Value Flow Rate Pressure Elev Status Grade (US gpm) (psi g) (ft) (ft) IA Flow out 20 85.55 391 588.8 IG Flow in 20 38.42 389.5 478.3 JA Flow out 20 67.47 395 551 JF Flow in 20 27.98 389.25 453.9 PIPE-FLO 2005 pg 16

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIX A Page A34 NOTES 06/24/10 9:22 am SPECI FICATIONS FLUID ZONES PIPELINES NODES PUMPS COMPONENTS CONTROLS TANKS DEMANDS PIPE-FLO 2005 pg 17

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIX A Page A35 System: Scenario 8D2 06/24/10 9:29 am Lineup: Scenario 8D2 Company: Sargent & Lundy LLC rev: 06/24/10 9:29 am Project: Atm pressure: 14.7 psi a LIST REPORT Total System Volume: 737326 gallons Pressure drop calculations: Darcy-Weisbach method. Calculated: 17 iterations Avg Deviation: 0.0001865 % SPECIFICATIONS Specification Material 1 Schedule Roughness Sizing Design Limits BBSX (STD) ByronPipes-NHL / STD 0.036 in not specified Valves: standard C: 100 BBSX (XS) ByronPipes-NHL / XS 0.036 in not specified Valves: standard C: 100 Steel Sch. 10 Steel A53-836.10 / 10 0.036 in not specified Valves: standard C: 140 Steel Sch. 20 Steel A53-836.10 / 20 0.036 in not specified Valves: standard C: 140 Steel Sch. 30 Steel A53-B36.1 0 / 30 0.036 in not specified Valves: standard C: 140 Steel Sch. 40 Steel A53-836.1 0 / 40 0.036 in not specified Valves: standard C: 140 Steel Std Steel A53-B36.10 / 20 0.036 in not specified Valves: standard C: 140 FLUID ZONES Fluid Zone Fluid Temp Pressure Density Viscosity Pv / Pc or k (OF) (psi g) (Ib/fP) cP (psi a) Water Water 77 14.7 62.33 0.8883 0.4595/3198 PIPE-FLO 2005 pg 1

CALCULATION NO. NED-M-MSD ..009 REVISION NO. 8A APPENDIX A Page A36 PIPELINES 06/24/10 9:29 am Pipeline From To Status Flow Velocity dP Hl (US gpm) (ft/sec) (psi) (ft) Specification Fluid Zone Size length K (in) (ft) AA SX Pump 1A 18599 6.12 (9.057) 0.893 BBSX (STO) Water 36 71 .2 1.054 12 BU CR Ref. Cond OA 1178 7.561 3.033 17.66 Steel Sch. 40 Water 8 229.5 9.66 154 BF BG 1530 6.23 7.613 4.927 Steel Sch. 40 Water 10 70.35 5.837 155 BG BH 2938 6.841 1.146 2.649 Steel Sch . 30 Water 14 129 0.644 156 BH BI 4376 10.19 0.927 2.143 Steel Sch. 30 Water 14 42.14 0.352 157 BI BJ 5733 10.08 8.947 7.551 Steel Sch. 30 Water 16 205.5 0.804 158 BJ Cont. Ref. 1A xxx BBSX(STO) Water 12 17.25 1.295 160 Cont. Ref. 1A BM o o o o Steel Sch. 20 Water 12 23.5 1.835 161 BJ BM 5733 10.08 0.678 1.568 Steel Sch. 30 Water 16 12.66 0.749 162 BM BT 5733 10.08 (6.749) 2.75 Steel Sch. 30 Water 16 47 0.833 164 BT BY 7535 8.312 (7.977) 1.06 Steel Sch. 20 Water 20 37 0.454 165 BX BY 1556 6.334 0.508 1.173 Steel Sch. 40 Water 10 5.33 1.707 166 BY GO 9090 10.03 (5.239) 3.641 Steel Sch . 20 Water 20 43.5 1.705 167 BO BP 2060 8.387 12.16 6.701 Steel Sch . 40 Water 10 125.4 1.97 168 BP OGJWC-1A 1801 7.334 8.211 29.14 Steel Sch. 40 Water 10 118.5 30.98 170 OGJWC-1A BS 1801 7.334 23.93 55.21 Steel Sch. 40 Water 10 111.5 62.45 171 BS BT 1801 7.334 (6.286) 4.718 Steel Sch. 40 Water 10 82.25 2.916 172 BO IA 20 0.222 (1 .187) 0.006 Steel Sch. 40 Water 6 81.33 2.002 173 IA IB xxx Steel Sch. 40 Water 6 0.25 0.633 176 AA SX Pump 2A xxx BBSX (STO) Water 36 97.75 1.875 178 SX Pump 2A CD xxx BBSX (STO) Water 36 33.8 1.345 179 CO CE o o o o BBSX (STO) Water 36 0.01 3.278 180 CE CF o o o o BBSX(STO) Water 36 6.2 0.326 181 CF OA 5780 6.377 22.61 2.757 Steel Sch. 20 Water 20 145.8 2.257 182 OA DO 337.9 0.787 3.681 0.008 Steel Sch. 30 Water 14 8.5 0.606 183 DO OP 20 0.047 o o Steel Sch. 30 Water 14 3.25 0.439 233 OA DB 5442 9.567 15.1 11.92 Steel Sch. 30 Water 16 227.5 3.975 PIPE-FLO 2005 pg 2

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIX A Page A37 PIPELINES 06/24/10 9:29 am Pipeline From To Status Flow Velocity dP HL (US gpm) (ft/sec) (psi) (tt) Specification Fluid Zone Size Length K (in) (tt) 234 DB DC 4115 9.583 0.522 1.237 Steel Sch . 30 Water 14 26.07 0.263 235 DC DO 2671 6.219 1.114 2.574 Steel Sch. 30 Water 14 144 0.934 236 DO DE 1323 5.387 (5.006) 1.218 Steel Sch. 40 Water 10 36.95 1.47 25 CR Ref. Cond OA BX 1178 7.561 23.28 70.88 Steel Sch. 40 Water 8 248.6 68.82 3 SX Pump 1A AD 18599 6.12 1.916 1.47 BBSX (STO) Water 36 18.75 2.403 327 OF OG 1323 5.387 6.1 3.449 Steel Sch. 40 Water 10 64.54 5.505 328 OG OH 2671 6.219 0.985 2.277 Steel Sch. 30 Water 14 130.7 0.749 329 OH 01 4115 9.583 0.917 2.12 Steel Sch. 30 Water 14 42.43 0.503 330 01 OJ 5442 9.567 10.63 11 .5 Steel Sch. 30 Water 16 223.5 3.757 331 OJ Cant. Ref2A 810.9 2.302 0.902 0.234 BBSX (STO) Water 12 20.75 2.288 333 Cant. Ref 2A OM 810.9 2.302 (0.004) 0.190 BBSX (STO) Water 12 24.5 1.656 334 OJ OM 4632 8.142 1.87 4.323 Steel Sch . 30 Water 16 9.25 4.024 335 OM ON 5442 9.567 (2.153) 1.074 Steel Sch. 30 Water 16 18.5 0.397 336 ON OU 5442 9.567 (4.69) 1.408 Steel Sch . 30 Water 16 31.5 0.38 337 OU OV 5442 6.004 (8.302) 0.310 Steel Sch . 20 Water 20 29.75 0.123 339 OV GC 5760 6.355 (5.245) 3.627 Steel Sch. 20 Water 20 246 2.222 340 OP DO o o 5.948 o Steel Sch . 40 Water 10 101.3 2.816 341 DO OGJWC-2A xxx Steel Sch. 40 Water 10 112.8 32.21 343 OGJWC-2A OT o o (0.757) o Steel Sch. 40 Water 10 115.8 69.77 344 OT OU o o (7.571) o Steel Sch . 40 Water 10 52.25 2.138 345 OP JA 20 0.222 0.545 0.009 Steel Sch. 40 Water 6 110.8 3.04 348 AF AG 9231 3.037 0.053 0.123 BBSX (STO) Water 36 42.25 0.569 349 AG HA 8117 3.879 2.011 0.398 BBSX(STO) Water 30 8.25 1.635 351 HA HB 8000 3.823 8.129 0.289 BBSX (STO) Water 30 62.75 0.736 356 HB CC HX-1 8000 3.823 0.029 0.067 BBSX(STO) Water 30 12.25 0.19 364 CC HX-1 HE 8000 3.823 (3.392) 0.409 BBSX (STO) Water 30 55.75 1.323 367 HE GF 8117 3.879 0.1 08 0.250 BBSX(STO) Water 30 13.6 0.952 PIPE-FLO 2005 pg 3

CALCULArlON NO. NED-M-MSD-009 REVISION NO. 8A APPENDIX A Page A38 PIPELINES 06/24/10 9:29 am Pipeline From To Status Flow Velocity dP HL (US gpm) (ft/sec) (psi) (ft) Specification Fluid Zone Size Length K (in) (ft) 368 GF GE 26034 6.255 0.137 0.317 BBSX (STD) Water 42 20.75 0.407 369 CG CF <--> 5780 1.902 0.004 0.010 BBSX (STD) Water 36 4.5 0.146 370 CG HF 16097 7.692 0.601 1.39 BBSX (STD) Water 30 3.75 1.482 372 HF CC HX-2 16000 7.646 13.05 1.91 BBSX(STD) Water 30 110.8 1.159 384 CC HX-2 HI 16000 7.646 (4.452) 0.309 BBSX(STD) Water 30 17.5 0.191 387 HI GI 16000 7.646 0.793 1.833 BBSX(STD) Water 30 12 1.919 388 GI GH 19211 4.616 0.018 0.043 BBSX(STD) Water 42 8.5 0.081 389 GH GE 19309 4.639 0.328 0.757 BBSX(STD) Water 42 123 1.579 390 GE GD 45342 8.392 0.094 0.217 BBSX (XS) Water 48 14.75 0.129 391 GD GC 54432 10.07 0.255 0.590 BBSX (XS) Water 48 32.25 0.222 393 GC GB 60193 11 .14 17.82 11 .94 BBSX (XS) Water 48 956.2 1.678 394 AH SX Pump 1B 15981 5.258 (9.158) 0.660 BBSX (STD) Water 36 71.3 1.054 396 SX Pump 1B AK 15981 12.09 2.017 1.661 Steel Sch . 20 Water 24 7.22 0.651 397 AK AL 15981 5.258 0.608 1.406 BBSX (STD) Water 36 0.01 3.278 398 AL AM 15981 5.258 0.068 0.156 BBSX(STD) Water 36 6.25 0.322 399 AM EA 8977 9.904 25.74 6.997 Steel Std Water 20 149 2.446 4 AD AE 18599 6.12 0.824 1.904 BBSX(STD) Water 36 0.01 3.278 400 EA EN 3726 8.678 1.973 0.810 Steel Sch. 30 Water 14 3.75 0.606 401 EN EO 2337 5.442 0.100 0.231 Steel Sch. 30 Water 14 2 0.457 402 EO EP 1564 6.369 11.95 4.484 Steel Sch . 40 Water 10 137 2.558 403 EP DGJWC-1B 1823 7.422 10.49 34.4 Steel Sch. 40 Water 10 223.8 32.8 405 DGJWC-1B ES 1823 7.422 18.64 43.03 Steel Sch. 40 Water 10 209 43.4 406 ES ET 1823 7.422 (8.24) 4.953 Steel Sch. 40 Water 10 86.5 2.916 407 EN EV 1389 5.657 1.634 0.526 Steel Sch . 40 Water 10 5.75 0.868 423 EV CR Ref. OB 1001 6.425 1.751 12.95 Steel Sch. 40 Water 8 233 9.791 425 CR Ref. OB EY 1001 6.425 25.68 76.37 Steel Sch. 40 Water 8 254.5 107.9 463 EY EZ 1389 5.657 0.415 0.958 Steel Sch. 40 Water 10 4 .5 1.78 PIPE-FLO 2005 pg 4

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIX A Page A39 PIPELINES 06/24/10 9:29 am Pipeline From To Status Flow Velocity dP HL (US gpm) (ftJsec) (psi) (ft) Specification Fluid Zone Size Length K (in) (ft) 464 EA EB 5250 9.23 12.78 7.795 Steel Sch . 30 Water 16 141 3.161 465 EB EC 3876 9.026 0.500 1.157 Steel Sch. 30 Water 14 28 0.265 466 EC EO 2593 6.039 0.628 2.451 Steel Sch . 30 Water 14 145.8 0.932 467 EO EE 1261 5.136 (5.358) 1.165 Steel Sch . 40 Water 10 48.75 1.216 5 AE AF 18599 6.12 0.093 0.216 BBSX (STO) Water 36 6.75 0.326 514 EH EI 3876 9.026 3.838 2.872 Steel Sch. 30 Water 14 62 0.832 538 EG EH 2593 6.039 0.908 2.099 Steel Sch . 30 Water 14 127 0.748 560 EF EG 1261 5.136 6.867 3.374 Steel Sch. 40 Water 10 69.57 5.919 561 EI EJ 5250 9.23 6.053 6.992 Steel Sch . 30 Water 16 149.5 2.388 562 EJ Cont. Ref. 1B xxx BBSX (STO) Water 12 27.25 1.491 564 Cont. Ref. 1B EM o o 0.692 o BBSX (STO) Water 12 32.75 2.28 565 EJ EM 5250 9.23 0.849 1.862 Steel Sch. 30 Water 16 13.5 1.147 566 EM ET 5250 9.23 (9.955) 1.839 Steel Sch. 30 Water 16 44.75 0.523 568 ET EU 7073 7.803 0.178 0.411 Steel Sch. 20 Water 20 11.75 0.265 569 EU EZ 7866 8.678 (6.085) 0.685 Steel Sch. 20 Water 20 17.5 0.333 570 EO IC 773 4.961 0.797 2.843 Steel Sch . 40 Water 8 97 3.09 571 Ie COOLING WATER BOO .. 773 8.591 3.101 9.669 Steel Sch. 40 Water 6 16 7.422 6 AF BA 9369 10.34 23.8 5.507 Steel Std Water 20 85.1 2.094 60 BA BB 5733 10.08 15.41 12.65 Steel Sch. 30 Water 16 214.2 3.871 602 IF IG 773 8.591 0.119 0.275 Steel Sch . 40 Water 6 2 0.112 603 IG IH 793 8.814 1.805 2.672 Steel Sch. 40 Water 6 22 0.812 604 IH EU 793 8.814 2.322 11.12 Steel Sch. 40 Water 6 99 2.903 605 AH SX Pump2B 27669 9.104 (8.073) 3.168 BBSX(STO) Water 36 87 1.875 607 SX Pump 2B CK 27669 20.93 2.748 3.351 Steel Sch. 20 Water 24 6.82 0.416 608 CK CL 27669 9.104 1.823 4.214 BBSX (STO) Water 36 0.01 3.278 609 CL CM 27669 9.104 0.201 0.464 BBSX (STO) Water 36 5.75 0.322 61 BB BC 4376 10.19 0.679 1.57 Steel Sch. 30 Water 14 29.25 0.296 PIPE-FLO 2005 pg 5

CALCULATION NO. NED ..M ..MSD ..009 REVISION NO. SA APPENDIX A Page A40 PIPELINES 06/24/10 9:29 am Pipeline From To Status Flow Velocity dP HL (US gpm) (ft/sec) (psi) (ft) Specification Fluid Zone Size Length K (in) (ft) 610 CM FA 5697 6.285 23.53 1.996 Steel Sch. 20 Water 20 87.75 1.986 611 FA FQ 321.6 0.749 1.733 0.006 Steel Sch. 30 Water 14 4 0.607 612 FQ FR 0 o o o Steel Sch. 30 Water 14 3.25 0.457 613 FR FS XXX Steel Sch. 40 Water 10 83 2.371 614 FS DGJWC-2B XXX Steel Sch. 40 Water 10 162.3 31.43 616 OGJWC-2B FV 0 o (1.622) o Steel Sch. 40 Water 10 142.3 125.2 617 FV ~ 0 o (8.76) o Steel Sch. 40 Water 10 59.5 2.595 62 BC BD ~~ 6.841 1.349 3.118 Steel Sch. 30 Water 14 144.4 0.932 63 BD BE 1530 6.23 (3.932) 1.72 Steel Sch. 40 Water 10 50.04 1.188 670 FA FB 5375 9.449 12.85 7.873 Steel Sch. 30 Water 16 138.9 2.988 671 FB FC 4050 9.431 0.561 1.296 Steel Sch . 30 Water 14 27.57 0.299 672 Fe FD 2721 6.336 1.171 2.697 Steel Sch. 30 Water 14 145.8 0.932 673 FD FE 1348 5.488 (4.891) 1.293 Steel Sch . 40 Water 10 46.25 1.224 7 BA BN 3635 4.011 3.776 0.228 Steel Sch. 20 Water 20 6.5 0.819 711 FI FJ 4050 9.431 3.788 2.757 Steel Sch. 30 Water 14 59 0.628 725 FH FI 2721 6.336 1.041 2.405 Steel Sch. 30 Water 14 133.5 0.751 747 FF FH 1348 5.488 7.819 3.573 Steel Sch. 40 Water 10 65.35 5.466 748 FJ ~ ~~ 9.449 6.225 7.39 Steel Sch. 30 Water 16 152.3 2.379 749 FK Cont. Ref 2B 866.3 2.46 0.129 0.199 BBSX(STD) Water 12 27.75 1.375 751 Cont. Ref 2B FN 866.3 2.46 0.761 0.259 BBSX (STD) Water 12 30.75 1.93 752 FK FN 4509 7.926 2 4.623 Steel Sch. 30 Water 16 15.25 4.447 753 FN FO 5375 9.449 (2.997) 0.822 Steel Sch. 30 Water 16 15.75 0 .288 754 FO FP 5375 9.449 (6.841) 1.186 Steel Sch. 30 Water 16 30.75 0.259 759 FP FW 5375 5.93 0.087 0.202 Steel Sch. 20 Water 20 7.25 0.265 760 FW FX 5395 5.952 (6.237) 0.333 Steel Sch. 20 Water 20 23.5 0.265 761 FR JB 0 o (0.498) o Steel Sch. 40 Water 8 106.5 3.998 762 JB COOLING WATER BOO.. 0 o (1.082) o Steel Sch. 40 Water 6 22.25 7.422 PIPE-FLO 2005 pg 6

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIX A Page A41 PIPELINES 06/24/10 9:29 am Pipeline From To Status Flow Velocity dP HL (US gpm) (ft/sec) (psi) (ft) Specification Fluid Zone Size Length K (in) (ft) 792 JE JF o o (2.596) o Steel Sch. 40 Water 6 16.5 1.557 793 JF FW 20 0.222 (1.724) 0.014 Steel Sch . 40 Water 6 170.8 5.01 794 AM AO 7004 2.304 0.006 0.015 BBSX (STO) Water 36 4.5 0.146 795 AN AO <--> 996 0.328 o o BBSX (STO) Water 36 2.5 0.097 8 BN BO 2080 4.843 0.076 0.176 Steel Sch. 30 Water 14 1.83 0.44 809 AP CC HX-O 8000 3.823 12.8 0.596 BBSX (STO) Water 30 107.3 1.705 810 CC HX-O HK 8000 3.823 o o BBSX (STO) Water 30 0.01 o 811 HK HL 8000 3.823 (2.963) 0.402 BBSX (STO) Water 30 27.75 1.532 812 HL HM 6193 2.959 0.030 0.068 BBSX (STO) Water 30 12.5 0.394 813 HM GG 6311 3.016 (1 .321) 0.197 BBSX (STO) Water 30 24.75 1.179 814 HL HN <--> 1807 0.863 (1.397) 0.020 BBSX(STO) Water 30 89.75 0.919 815 HN GJ 1901 0.908 0.006 0.013 BBSX (STO) Water 30 10.5 0.952 816 GG GF 17916 4.305 0.111 0.258 BBSX (STO) Water 42 23.25 0.766 817 GJ GI 3211 0.772 0.003 0.007 BBSX(STO) Water 42 29 0.547 818 EZ GL 9255 10.21 (2.302) 8.58 Steel Sch. 20 Water 20 213.5 2.221 819 GK GG 11605 2.788 0.101 0.233 BBSX (STO) Water 42 104.8 1.34 820 GK GJ 1310 0.315 o 0.002 BBSX (STO) Water 42 19.75 0.92 821 GL GK 12916 2.39 (0.773) 0.062 BBSX (XS) Water 48 45.75 0.48 822 CM CN 21972 7.229 0.062 0.143 BBSX (STO) Water 36 4.5 0.146 823 CN AQ 94.47 0.045 o o BBSX (STO) Water 30 3 1.482 837 GM GL 3660 0.677 (0.605) 0.002 BBSX (XS) Water 48 23.75 0.222 838 FX GM 5717 6.307 (5.068) 0.785 Steel Sch . 20 Water 20 12.5 1.091 839 GM GN 2056 0.381 o o BBSX (XS) Water 48 2.25 0.045 840 GN GO 2056 0.381 11 .26 0.017 BBSX (XS) Water 48 1107 1.623 841 CN CG 21878 7.198 0.670 1.549 BBSX (STO) Water 36 90.25 1.315 842 AG AN <--> 1114 0.366 o 0.002 BBSX (STO) Water 36 47.25 0.509 843 FG(A) AA 18599 3.442 (22.47) 1.219 BBSX (XS) Water 48 1021 1.744 PIPE-FLO 2005 pg 7

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIX A Page A42 PIPELINES 06/24/10 9:29 am Pipeline From To Status Flow Velocity dP HL (US gpm) (ft/sec) (psi) (ft) Specification Fluid Zone Size Length K (in) (ft) 845 FG(B) AH 43650 8.078 (19.62) 7.817 BBSX(XS) Water 48 1266 1.717 847 GB GA 60193 11.14 9.971 8.548 BBSX(XS) Water 48 747.6 0.902 848 GO GP 2056 0.381 6.277 0.011 BBSX (XS) Water 48 810.6 0.462 849 GP Cell E 286.9 0.217 30.47 36.52 Steel Sch . 20 Water 24 120.1 50005 850 GP KE 1769 0.327 o o BBSX(XS) Water 48 43 0.101 851 KE Cell F 286.9 0.217 30.47 36.52 Steel Sch. 20 Water 24 120.1 50005 852 KE KF 1482 0.274 o o BBSX(XS) Water 48 43 0.101 853 KF CeliG 286.9 0.217 30.47 36.52 Steel Sch. 20 Water 24 120.1 50005 854 KF KG 1196 0.221 o o BBSX (XS) Water 48 43 0.101 855 KG Cell H 286.9 0.217 30.47 36.52 Steel Sch. 20 Water 24 120.1 50005 856 KG KH 908.6 0.168 26.57 61.42 BBSX (XS) Water 48 153.2 140000 857 GA CeliA 14998 11.34 20.89 14.38 Steel Sch. 20 Water 24 90.92 6.172 858 GA KA 45195 8.364 0.143 0.331 BBSX (XS) Water 48 43 0.101 859 KA Cell B 14824 11.21 20.74 14.05 Steel Sch. 20 Water 24 90.92 6.172 860 KA KB 30371 5.621 0.065 0.150 BBSX (XS) Water 48 43 0.101 861 KB CeliC 14745 11.15 20.68 13.9 Steel Sch. 20 Water 24 90.92 6.172 862 KB KC 15626 2.892 0.015 0.035 BBSX(XS) Water 48 35.75 0.101 863 KC CeliO 14726 11.14 20.66 13.87 Steel Sch. 20 Water 24 90.92 6.172 864 KC KD 900.3 0.167 16.77 38.76 BBSX (XS) Water 48 7.25 90000 865 AO AP 8000 3.823 0.208 0.480 BBSX (STD) Water 30 5.5 2.071 866 AP AO xxx BBSX(STD) Water 30 7 0.89 867 IB IH xxx Steel Sch. 40 Water 6 10.5 11.59 870 BP EP 258.6 1.053 0.004 0.020 Steel Sch. 40 Water 10 4 .75 1.007 871 BS ES xxx Steel Sch. 40 Water 10 4.75 1.477 874 DO FS xxx Steel Sch. 40 Water 10 10.5 1.464 875 DT FV xxx Steel Sch. 40 Water 10 12 1.665 897 KH basin-5 467.4 0.353 3.464 0.007 Steel Sch. 20 Water 24 92.83 2.46 PIPE-FLO 2005 pg 8

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIX A Page A43 PIPELINES 06/24/10 9:29 am Pipeline From To Status Flow Velocity dP HL (US gpm) (ft/sec) (psi) (tt) Specification Fluid Zone Size Length K (in) (tt) 898 KH basin-4 441.2 0.334 3.464 0.007 Steel Sch. 20 Water 24 77.4 3.097 899 KO basin-4{001} 512.9 0.388 3.464 0.007 Steel Sch . 20 Water 24 63.92 2.027 9 BN BU 1556 6.334 1.752 0.801 Steel Sch . 40 Water 10 6 1.086 900 KO New Pipe 387.4 0.293 2.38 0.002 Steel Sch. 20 Water 24 29.58 1.312 900-1 New Pipe Basin-3 387.4 0.427 1.083 0.004 Steel Sch. 20 Water 20 22 1.189 DO AFP-2B LOOP (939) COOLING WATER BOO .. JE xxx Steel Sch. 40 Water 8 0.01 303 00AFP-1B LOOP (938) COOLING WATER BOO .. IF 773 4.961 36.78 84.01 Steel Sch . 40 Water 8 0.01 220 RCFC-1A (914) BD BG 1408 9.037 31 .1 84.88 Steel Sch. 40 Water 8 0.01 67 RCFC-1A (915) BE BF 1530 9.82 27.42 78.23 Steel Sch . 40 Water 8 0.01 52.3 RCFC-1B (922) EO EG 1332 8.55 31 .21 84.15 Steel Sch . 40 Water 8 0.01 74.2 RCFC-1 B (923) EE EF 1261 8.096 29.7 79.61 Steel Sch . 40 Water 8 0.01 78.3 RCFC-1C (912) BB BI 1358 8.714 35.2 94.36 Steel Sch . 40 Water 8 0.01 80.1 RCFC-1C (913) BC BH 1438 9.229 33.59 90.65 Steel Sch . 40 Water 8 0.01 68.6 RCFC-10 (920) EB EI 1375 8.822 37.09 92.73 Steel Sch . 40 Water 8 0.01 76.8 RCFC-1O (921) EC EH 1282 8.231 32.75 88.7 Steel Sch. 40 Water 8 0.01 84.4 RCFC-2A (918) DO OG 1348 8.651 13.96 45.27 Steel Sch . 40 Water 8 0.01 39 RCFC-2A (919) DE OF 1323 8.492 12.87 40.61 Steel Sch. 40 Water 8 0.01 36.3 RCFC-2B (926) FO FH 1373 8.815 18.62 56.05 Steel Sch. 40 Water 8 0.01 46.5 RCFC-2B (927) FE FF 1348 8.65 15.7 51.18 Steel Sch. 40 Water 8 0.01 44.1 RCFC-2C (916) DB 01 1327 8.519 17.5 53.48 Steel Sch . 40 Water 8 0.01 47.5 RCFC-2C (917) DC DH 1444 9.27 16.06 50.13 Steel Sch. 40 Water 8 0.01 37.6 RCFC-20 (924) FB FJ 1325 8.506 25.18 65.21 Steel Sch. 40 Water 8 0.01 58.1 RCFC-20 (925) FC FI 1329 8.528 20.84 61.15 Steel Sch. 40 Water 8 0.01 54.2 SX CC'S & OC-1A (932) HA HE 117.1 2.952 61 .66 127.8 Steel Sch. 40 Water 4 0.01 945 SX CC'S & OC-1 B (934) AN HM 117.6 2.967 64.99 128 Steel Sch. 40 Water 4 0.01 937.1 SX CC'S & OC-2A (933) HF GH 97.34 2.455 46.05 87.45 Steel Sch. 40 Water 4 0.01 935.1 SX CC'S & OC-2B (935) AQ HN 94.47 2.383 47.3 90.33 Steel Sch . 40 Water 4 0.01 1026 PIPE-FLO 2005 pg 9

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIX A Page A44 PIPELINES 06/24/10 9:29 am Pipeline From To Status Flow Velocity dP HL (US gpm) (ft/sec) (psi) (tt) Specification Fluid Zone Size Length K (in) (tt) Train 1A (928) BU BX 377.7 2.424 39.47 117.7 Steel Sch. 40 Water 8 0.01 1292 TRAIN 1B (930) EV EY 388.3 2.493 36.89 110 Steel Sch. 40 Water 8 0.01 1142 TRAIN 2A (929) DO DV 317.9 2.041 26.28 84 Steel Sch. 40 Water 8 0.01 1301 TRAIN 2B (931) FQ FX 321.6 2.064 28.54 87.63 Steel Sch. 40 Water 8 0.01 1326 PIPE-FLO 2005 pg 10

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIX A Page A45 NODES 06/24/10 9:29 am Node Elev Status Pressure Grade (ft) (psi g) (ft) AA 354.33 22.47 406.3 AD 335.75 113.9 599.1 AE 335.75 113.1 597.2 AF 335.75 113 596.9 AG 335.75 112.9 596.8 AH 354.33 19.62 399.7 AK 335.75 113.6 598.4 AL 335.75 113 597 AM 335.75 112.9 596.8 AN 335.75 112.9 596.8 AO 335.75 112.9 596.8 AP 335.75 112.7 596.3 AO 335.75 96.68 559.2 BA 385.25 89.2 591.4 BB 408.22 73.79 578.8 BC 408.22 73.11 577.2 BO 408.22 71 .76 574.1 BE 397.41 75.69 572.4 BF 382.55 48.28 494.2 BG 395.22 40.67 489.2 BH 395.22 39.52 486.6 BI 395.22 38.59 484.4 BJ 408.35 29.65 476.9 BM 408.35 28.97 475.3 BN 393.75 85.42 591.2 BO 393.75 85.35 591 BP 415.16 73.19 584.3 BS 409.25 29.43 477.3 BT 390 35.72 472.6 BU 397 83.67 590.4 BX 370.5 44.2 472.7 BY 370.5 43.69 471 .5 CD 335.75 96 557.7 CE 335.75 96 557.7 CF 335.75 96 557.7 CG 335.75 96.01 557.7 CK 335.75 98.76 564 CL 335.75 96.94 559.8 CM 335.75 96.74 559.4 CN 335.75 96.68 559.2 COOLING WATER BOOSTER PUMP-1 .. 388.5 81.24 576.3 COOLING WATER BOOSTER PUMP-2 .. 388.5 73.05 557.4 OA 385.25 73.4 554.9 DB 408.25 58.29 543 DC 408.22 57.77 541 .8 DO 408.22 56.66 539.2 DE 395.43 61.66 538 OF 384.57 48.79 497.4 OG 395.22 42.69 493.9 OH 395.22 41.71 491 .6 01 395.22 40.79 489.5 OJ 408.3 30.16 478 OM 408.3 28.29 473.7 ON 402.25 30.44 472.6 DO 393.75 69.72 554.9 OP 393.75 69.72 554.9 DO 407.5 63.77 554.9 OT 407.5 27.56 471 .2 OU 390 35.13 471 .2 OV 370.5 43.43 470.9 EA 388.25 87.21 589.8 EB 410 74.43 582 PIPE*FLO 2005 pg 11

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIX A Page A46 NODES 06/24/10 9:29 am Node Elev Status Pressure Grade (ft) (psi g) (ft) EC 410 73.93 580.9 ED 409 73.3 578.4 EE 395.45 78.66 577.3 EF 384.5 48.96 497.7 EG 397 42 .09 494.3 EH 397 41.18 492.2 EI 403 37.34 489.3 EJ 410 31 .29 482.3 EM 410.1 30.44 480.5 EN 392 85.24 589 EO 392 85.14 588.8 EP 415.15 73.18 584.3 ES 409.25 32.15 483.6 ET 385.25 40.39 478.6 EU 385.25 40.22 478.2 EV 395.25 83.6 588.5 EY 370.5 46.72 478.5 EZ 370.5 46.3 477.5 FA 388.15 73.21 557.4 FB 409.99 60 .35 549.5 FC 409.99 59.79 548.2 FD 410 58.62 545.5 FE 397.4 63.51 544.2 FF 382.5 47.82 493 FH 397 40 489.5 FI 397 38.96 487 FJ 403 35.17 484.3 FK 410 28.94 476.9 FN 410 26.94 472.3 FO 402.25 29.94 471 .5 FP 385.25 36.78 470.3 FQ 392.1 5 71.47 557.4 FR 392.15 71.47 557.4 FV 405.5 28.02 470.3 FW 385.25 36.69 470.1 FX 370.5 42.93 469.7 GA 398.5 20.89 446.8 GB 384 30.86 455.3 GC 354.75 48.68 467.3 GO 354.75 48.93 467.9 GE 354.75 49.03 468.1 GF 354.75 49.16 468.4 GG 354.75 49.28 468.7 GH 354.75 49.36 468.8 GI 354.75 49.37 468.9 GJ 354.75 49.38 468.9 GK 354.75 49.38 468.9 GL 356.6 48.6 468.9 GM 358 48 469 GN 358 48 469 GO 384 36.74 468.9 GP 398.5 30.47 468.9 HA 340 110.9 596.4 HE 354.75 49.27 468.6 HF 335.75 95.41 556.3 HL 358 47.98 468.9 HM 358 47.96 468.9 HN 354.75 49.38 468.9 IC 391 84.34 586 IF 389.5 44.46 492.3 IH 391 42.54 489.3 JB 391 71 .97 557.4 PIPE-FLO 2005 pg 12

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIX A Page A47 NODES 06/24/10 9:29 am Node Elev Status Pressure Grade (ft) (psi g) (ft) JE 395.25 32.37 470.1 KA 398.5 20.74 446.5 KB 398.5 20.68 446.3 KC 398.5 20.66 446.3 KD 398.5 3.896 407.5 KE 398.5 30.47 468.9 KF 398.5 30.47 468.9 KG 398.5 30.47 468.9 KH 398.5 3.897 407.5 New Pipe 404 1.516 407.5 PIPE-FLO 2005 pg 13

CALCULATION NO. NED-M-MSD-009 REVISION NO. 8A APPENDIX A Page A48 PUMPS 06/24/10 9:29 am Pump Flow Status Total head dP Speed NPSHa Suction Discharge Suction Discharge (USgpm) (ft) (psi) (rpm) (ft) (psi g) (psi g) (ft) (ft) SX Pump 1A 18599 (195.2) (84.42) 105.8 31.53 115.8 332.5 332.79

                           <no catalog data available>

SX Pump 1B 15981 (201) (86.97) 99.44 28.78 115.6 332.5 332.75

                           <no catalog data available>

SX Pump2B 27669 (170.9) (73.93) 96.93 27.69 101.5 332.5 332.75

                           <no catalog data available>

COMPONENTS Component Flow Status Head Loss dP Inlet Outlet Inlet Outlet (US gpm) (ft) (psi) (psi g) (psi g) (ft) (ft) CC HX-O 8000 12.25 5.3 99.93 94.42 364.75 365.25 CC HX-1 8000 12.25 5.3 53.13 45.88 358.5 363 CC HX-2 16000 24.5 10.6 82.36 71.17 364 365.35 Cont. Ref2A 810.9 3.899 1.687 29.26 28.28 410.15 408.5 Cont. Ref2B 866.3 4.165 1.802 28.81 27.7 410.1 408.5 Cont. Ref. 1A Off 410.1 408.35 Cont. Ref. 1B Off 410.1 408.5 CR Ref. OB 1001 20.7 8.954 81.85 72.4 386.35 387.5 CR Ref. Cond OA 1178 29.2 12.63 80.64 67.48 386.35 387.56 DGJWC-1A 1801 22.71 9.824 64.98 53.36 405 409.15 DGJWC-1B 1823 23.31 10.09 62.69 50.79 405 409.2 DGJWC-2A Off 405.5 409.25 DGJWC-2B Off 405.5 409.25 CONTROLS Control Set Value Elev Flow Status dP HL Inlet Outlet (ft) (US gpm) (psi) (ft) (psi g) (psi g) HB FCV: 8000 358.5 8000 49.65 114.8 102.8 53.16

                           <no catalog data available>

HI FCV: 16000 354.75 16000 25.46 58.85 75.63 50.17

                           <no catalog data available>

HK FCV: 8000 365.25 8000 49.39 114.2 94.41 45.02

                           <no catalog data available>

PIPE-FLO 2005 pg 14

CALCULATION NO. NED ..M ..MSD ..OO9 REVISION NO. SA APPENDIX A Page A49 TANKS 06/24/10 9:29 am Tank Surface Pressure Level Bottom Elevation Status Flow Pressure Grade (psi g) (tt) (tt) (US gpm) (psi) (tt) Basin*3 0 406.5 387.4 0.433 407.5 Connecting pipelines Flow (US gpm) Pressure (psi g) Grade (tt) 900-1 @ 0 ft 387.4 0.433 407.5 Infinite tank/no geometry basin4 0 406.5 441 .2 0.433 407.5 Connecting pipelines Flow (US gpm) Pressure (psi g) Grade (ft) 898@Oft 441.2 0.433 407.5 Infinite tank/no geometry basin4{001} 0 406.5 512.9 0.433 407.5 Connecting pipelines Flow (US gpm) Pressure (psi g) Grade (tt) 899@Oft 512.9 0.433 407.5 Infinite tank/no geometry basin-5 0 406.5 467.4 0.433 407.5 Connecting pipelines Flow (US gpm) Pressure (psi g) Grade (tt) 897@Ott 467.4 0.433 407.5 Infinite tank/no geometry CeliA 0 0 432.4 14998 0 432.4 Connecting pipelines Flow (US gpm) Pressure (psi g) Grade (tt) 857@Ott 14998 0 432.4 Infinite tank/no geometry Cell B 0 0 432.4 14824 0 432.4 Connecting pipelines Flow (US gpm) Pressure (psi g) Grade (ft) 859@Ott 14824 0 432.4 Infinite tank/no geometry CellC 0 0 432.4 14745 0 432 .4 Connecting pipelines Flow (US gpm) Pressure (psi g) Grade (ft) 861 @Oft 14745 0 432.4 Infinite tank/no geometry CeliO 0 0 432.4 14726 0 432.4 Connecting pipelines Flow (US gpm) Pressure (psi g) Grade (tt) 863@Ott 14726 0 432.4 Infinite tank/no geometry Cell E 0 0 432.4 286.9 0 432.4 Connecting pipelines Flow (US gpm) Pressure (psi g) Grade (tt) 849@Oft 286.9 0 432.4 Infinite tank/no geometry Cell F 0 0 432.4 286.9 0 432.4 Connecting pipelines Flow (US gpm) Pressure (psi g) Grade (tt) 851 @Oft 286.9 0 432.4 Infinite tank/no geometry CellG 0 0 432.4 286.9 0 432.4 Connecting pipelines Flow (US gpm) Pressure (psi g) Grade (tt) 853@Oft 286.9 0 432.4 Infinite tank/no geometry PIPE-FLO 2005 pg 15

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIX A Page A50 TANKS 06/24/10 9:29 am Tank Surface Pressure Level Bottom Elevation Status Flow Pressure Grade (psi g) (ft) (ft) (US gpm) (psi) (ft) Cell H o o 432.4 286.9 0 432.4 Connecting pipelines Flow (US gpm) Pressure (psi g) Grade (ft) 855@Oft 286.9 0 432.4 Infinite tank/no geometry FG(A) o o 407.5 -18599 0 407.5 Connecting pipelines Flow (US gpm) Pressure (psi g) Grade (ft) 843@Oft 18599 0 407.5 Infinite tank/no geometry FG (B) o o 407.5 -43650 0 407.5 Connecting pipelines Flow (US gpm) Pressure (psi g) Grade (ft) 845@Oft 43650 0 407.5 Infinite tank/no geometry DEMANDS Demand Set Value Flow Rate Pressure Elev Status Grade (US gpm) (psi g) (ft) (ft) IA Flow out 20 86.54 391 591 IG Flow in 20 44.34 389.5 492 JA Flow out 20 69.17 395 554.9 JF Flow in 20 34.97 389.25 470.1 PIPE-FLO 2005 pg 16

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIX A Page A51 NOTES 06/24/10 9:29 am SPECIFICATIONS FLUID ZONES PIPELINES NODES PUMPS COMPONENTS CONTROLS TANKS DEMANDS PIPE-FLO 2005 pg 17

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CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIX 8 Page 81 scenario 8D Tower A.TXT MRL/ESC MODEL FOR BYRON ESW COOLING TOWER 9/91 06-04-2010 09:05:57 INPUT DATA BAROMETRIC PRESS (In HgA) 29.92 MINIMUM MAXIMUM INCREMENT DESIGN WATERFLOW (GPM) 13742 13742 1 12500 INLET WET BULB (F) 82.00 82.00 1.00 78.00 INLET REL HUMIDITY (%) 75.00 75.00 1.00 75.00 RANGES (F) 10.00 40.00 3.00 23.20 OUTPUT DATA WF2 water Flow to Tower (GPM) DB1 Air Inlet Dry Bulb (F) TWB1 Air Inlet Wet Bulb (F) RGE cooling Range (F) TWB2 Air Outlet Wet Bulb (F) EVAP Evaporation (% of WF2) CFM volumetric Air Flow Rate at Fan (CFM) L/G Water-To-Air Loading (lb/hr-water / lb/hr-dry air) KAV/L cooling Tower Thermal Transfer coefficient CW Predicted cold Water Temperature (F) WF2 DB1 RH1 TWB1 RGE TWB2 EVAP CFM L/G KAV/L CW 13742 88.91 75.00 82.00 10.00 102.49 0.84 603789 2.89 1.645 93.79 13742 88.91 75.00 82.00 13.00 107.35 1.09 603795 2.95 1.634 96.14 13742 88.91 75.00 82.00 16.00 111.82 1.35 603799 3.01 1.623 98.17 13742 88.91 75.00 82.00 19.00 115.96 1.61 603794 3.07 1.612 99.92 13742 88.91 75.00 82.00 22.00 119.79 1.87 603796 3.13 1.601 101.44 13742 88.91 75.00 82.00 25.00 123.37 2.13 603798 3.20 1.591 102.78 13742 88.91 75.00 82.00 28.00 126.73 2.40 603795 3.26 1.580 103.97 13742 88.91 75.00 82.00 31.00 129.89 2.67 603796 3.33 1.569 105.04 13742 88.91 75.00 82.00 34.00 132.87 2.94 603798 3.39 1.559 106.01 13742 88.91 75.00 82.00 37.00 135.71 3.21 603794 3.46 1.548 106.90 13742 88.91 75.00 82.00 40.00 138.40 3.48 603795 3.53 1.538 107.73 page 1

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIX 8 Page 82 scenario 80 Tower B.TXT MRL/ESC MODEL FOR BYRON ESW COOLING TOWER 9/91 06-04-2010 10:33:28 INPUT DATA BAROMETRIC PRESS (In HgA) 29.92 MINIMUM MAXIMUM INCREMENT DESIGN WATERFLOW (GPM) 18445 18445 1 12500 INLET WET BULB (F) 82.00 82.00 1.00 78.00 INLET REL HUMIDITY (%) 75.00 75.00 1.00 75.00 RANGES (F) 13.00 40.00 3.00 23.20 OUTPUT DATA WF2 water Flow to Tower (GPM) DB1 Air Inlet Dry Bulb (F) TWB1 Air Inlet Wet Bulb (F) RGE cooling Range (F) TWB2 Air outlet wet Bulb (F) EVAP Evaporation (% of wF2) CFM volumetric Air Flow Rate at Fan (CFM) L/G Water-To-Air Loading (lb/hr-water / lb/hr-dry air) KAV/L cooling Tower Thermal Transfer Coefficient CW Predicted cold water Temperature (F) WF2 DB1 RH1 TWB1 RGE TWB2 EVAP CFM L/G KAV/L CW 18445 88.91 75.00 82.00 13.00 117.40 1.10 526047 4.77 1.388 105.11 18445 88.91 75.00 82.00 16.00 123.10 1.37 526056 4.92 1.373 108.11 18445 88.91 75.00 82.00 19.00 128.26 1.64 526054 5.07 1.359 110.62 18445 88.91 75.00 82.00 22.00 132.97 1.91 526057 5.23 1.345 112.78 18445 88.91 75.00 82.00 25.00 137.31 2.19 526055 5.39 1.331 114.67 18445 88.91 75.00 82.00 28.00 141.33 2.47 526056 5.57 1.316 116.33 18445 88.91 75.00 82.00 31.00 145.08 2.75 526055 5.75 1.302 117.83 18445 88.91 75.00 82.00 34.00 148.60 3.03 526057 5.94 1.288 119.21 18445 88.91 75.00 82.00 37.00 151.92 3.31 526055 6.14 1.273 120.49 18445 88.91 75.00 82.00 40.00 155.05 3.60 526055 6.36 1.258 121.71 page 1

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIX B Page B3 scenario 8D1 Tower A.TXT MRL/ESC MODEL FOR BYRON ESW COOLING TOWER 9/91 06-04-2010 10:35:42 INPUT DATA BAROMETRIC PRESS (In HgA) 29.92 MINIMUM MAXIMUM INCREMENT DESIGN WATERFLOW (GPM) 10838 10838 1 12500 INLET WET BULB (F) 82.00 82.00 1.00 78.00 INLET REL HUMIDITY (%) 75.00 75.00 1.00 75.00 RANGES (F) 10.00 40.00 3.00 23.20 OUTPUT DATA WF2 Water Flow to Tower (GPM) DB1 Air Inlet Dry Bulb (F) TWB1 Air Inlet wet Bulb (F) RGE cooling Range (F) TWB2 Air outlet wet Bulb (F) EVAP Evaporation (% of wF2) CFM volumetric Air Flow Rate at Fan (CFM) L/G Water-To-Air Loading (lb/hr-water / lb/hr-dry air) KAV/L cooling Tower Thermal Transfer coefficient CW Predicted cold water Temperature (F) WF2 DB1 RH1 TWB1 RGE TWB2 EVAP CFM L/G KAV/L CW 10838 88.91 75.00 82.00 10.00 97.65 0.85 651794 2.08 1.843 89.85 10838 88.91 75.00 82.00 13.00 101.58 1.10 651798 2.11 1.834 91.52 10838 88.91 75.00 82.00 16.00 105.23 1.34 651798 2.14 1.824 92.97 10838 88.91 75.00 82.00 19.00 108.66 1.59 651800 2.17 1.815 94.25 10838 88.91 75.00 82.00 22.00 111.87 1.85 651802 2.20 1.806 95.37 10838 88.91 75.00 82.00 25.00 114.91 2.11 651798 2.23 1.797 96.37 10838 88.91 75.00 82.00 28.00 117.78 2.36 651797 2.27 1.789 97.27 10838 88.91 75.00 82.00 31.00 120.50 2.63 651797 2.30 1.780 98.08 10838 88.91 75.00 82.00 34.00 123.09 2.89 651800 2.33 1.771 98.81 10838 88.91 75.00 82.00 37.00 125.56 3.15 651797 2.37 1.763 99.48 10838 88.91 75.00 82.00 40.00 127.92 3.42 651798 2.40 1.754 100.10 page 1

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIX B Page 84 Scenario 801 Tower B.TXT MRL/ESC MODEL FOR BYRON ESW COOLING TOWER 9/91 06-04-2010 10:38:58 INPUT DATA BAROMETRIC PRESS (In HgA) 29.92 MINIMUM MAXIMUM INCREMENT DESIGN WATERFLOW (GPM) 16918 16918 1 12500 INLET WET BULB (F) 82.00 82.00 1.00 78.00 INLET REL HUMIDITY (%) 75.00 75.00 1.00 75.00 RANGES (F) 13.00 40.00 3.00 23.20 OUTPUT DATA WF2 Water Flow to Tower (GPM) DB1 Air Inlet Dry Bulb (F) TWB1 Air Inlet Wet Bulb (F) RGE cooling Range (F) TWB2 Air outlet Wet Bulb (F) EVAP Evaporation (% of WF2) CFM volumetric Air Flow Rate at Fan (CFM) L/G Water-To-Air Loading (lb/hr-water / lb/hr-dry air) KAV/L cooling Tower Thermal Transfer coefficient CW predicted cold Water Temperature (F) WF2 DB1 RH1 TWB1 RGE TWB2 EVAP CFM L/G KAV/L CW 16918 88.91 75.00 82.00 13.00 114.06 1.10 551289 4.11 1.460 102.04 16918 88.91 75.00 82.00 16.00 119.34 1.36 551295 4.22 1.447 104.68 16918 88.91 75.00 82.00 19.00 124.18 1.63 551298 4.33 1.434 106.95 16918 88.91 75.00 82.00 22.00 128.62 1.90 551296 4.45 1.421 108.91 16918 88.91 75.00 82.00 25.00 132.73 2.17 551298 4.57 1.408 110.62 16918 88.91 75.00 82.00 28.00 136.55 2.44 551296 4.69 1.395 112.13 16918 88.91 75.00 82.00 31.00 140.12 2.72 551297 4.83 1.382 113.49 16918 88.91 75.00 82.00 34.00 143.48 3.00 551299 4.96 1.369 114.72 16918 88.91 75.00 82.00 37.00 146.64 3.28 551297 5.10 1.356 115.87 16918 88.91 75.00 82.00 40.00 149.64 3.56 551296 5.25 1.343 116.94 page 1

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIX B Page 85 scenario 8D2 Tower A.TXT MRL/ESC MODEL FOR BYRON ESW COOLING TOWER 9/91 06-04-2010 10:41: 29 INPUT DATA BAROMETRIC PRESS (In HgA) 29.92 MINIMUM MAXIMUM INCREMENT DESIGN WATERFLOW (GPM) 14573 14573 1 12500 INLET WET BULB (F) 76.00 76.00 1.00 78.00 INLET REL HUMIDITY (%) 75.00 75.00 1.00 75.00 RANGES (F) 10.00 40.00 3.00 23.20 OUTPUT DATA WF2 Water Flow to Tower (GPM) DB1 Air Inlet Dry Bulb (F) TWB1 Air Inlet wet Bulb (F) RGE cooling Range (F) TWB2 Air Outlet wet Bulb (F) EVAP Evaporation (% of WF2) CFM volumetric Air Flow Rate at Fan (CFM) L/G Water-To-Air Loading (lb/hr-water / lb/hr-dry air) KAV/L cooling Tower Thermal Transfer coefficient CW Predicted cold Water Temperature (F) WF2 DB1 RH1 TWB1 RGE TWB2 EVAP CFM L/G KAV/L cw 14573 82.43 75.00 76.00 10.00 100.23 0.82 590053 3.11 1.605 91.29 14573 82.43 75.00 76.00 13.00 105.81 1.07 590060 3.18 1.593 94.26 14573 82.43 75.00 76.00 16.00 110.85 1.32 590062 3.25 1.581 96.77 14573 82.43 75.00 76.00 19.00 115.46 1.58 590058 3.33 1.569 98.91 14573 82.43 75.00 76.00 22.00 119.71 1.84 590060 3.40 1.557 100.76 14573 82.43 75.00 76.00 25.00 123.64 2.11 590058 3.47 1.546 102.37 14573 82.43 75.00 76.00 28.00 127.30 2.37 590058 3.55 1.535 103.78 14573 82.43 75.00 76.00 31.00 130.73 2.64 590061 3.63 1.523 105.05 14573 82.43 75.00 76.00 34.00 133.96 2.92 590058 3.71 1.512 106.20 14573 82.43 75.00 76.00 37.00 137.00 3.19 590060 3.79 1.501 107.24 14573 82.43 75.00 76.00 40.00 139.89 3.47 590061 3.88 1.489 108.21 page 1

CALCULAliON NO. NED-M-MSD-009 REVISION NO. SA APPENDIX B Page B6 scenario 8D2 Tower B.TXT MRL/ESC MODEL FOR BYRON ESW COOLING TOWER 9/91 06-04-2010 09:14:15 INPUT DATA BAROMETRIC PRESS (In HgA) 29.92 MINIMUM MAXIMUM INCREMENT DESIGN WATERFLOW (GPM) 6000 6000 1 12500 INLET WET BULB (F) 76.00 76.00 1.00 78.00 INLET REL HUMIDITY (%) 75.00 75.00 1.00 75.00 RANGES (F) 10.00 40.00 3.00 23.20 OUTPUT DATA WF2 Water Flow to Tower (GPM) DB1 Air Inlet Dry Bulb (F) TWB1 Air Inlet Wet Bulb (F) RGE cooling Range (F) TWB2 Air outlet Wet Bulb (F) EVAP Evaporation (% of wF2) CFM volumetric Air Flow Rate at Fan (CFM) L/G Water-To-Air Loading (lb/hr-water / lb/hr-dry air) KAV/L cooling Tower Thermal Transfer coefficient CW Predicted cold Water Temperature (F) WF2 DB1 RH1 TWB1 RGE TWB2 EVAP CFM L/G KAV/L CW 6000 82.43 75.00 76.00 10.00 85.28 0.87 731763 0.98 2.380 79.78 6000 82.43 75.00 76.00 13.00 87.76 1.10 731773 0.99 2.373 80.64 6000 82.43 75.00 76.00 16.00 90.15 1.33 731773 1.00 2.367 81.41 6000 82.43 75.00 76.00 19.00 92.43 1.56 731772 1.00 2.361 82.11 6000 82.43 75.00 76.00 22.00 94.61 1.80 731768 1.01 2.354 82.74 6000 82.43 75.00 76.00 25.00 96.71 2.04 731769 1.02 2.348 83.30 6000 82.43 75.00 76.00 28.00 98.74 2.28 731769 1.03 2.342 83.82 6000 82.43 75.00 76.00 31.00 100.68 2.52 731771 1.04 2.336 84.29 6000 82.43 75.00 76.00 34.00 102.56 2.77 731770 1.04 2.330 84.72 6000 82.43 75.00 76.00 37.00 104.37 3.01 731768 1.05 2.325 85.11 6000 82.43 75.00 76.00 40.00 106.12 3.26 731770 1.06 2.319 85.46 page 1 (FINAL PAGE OF APPENDIX B)

CALCULATION NO. NED*M*MSD*009 REVISION NO. SA APPENDIX C Page C1 Scenario 8D (Riser Valves Closed) Two Tower Model - (Heat load for Power Uprate) Breaker Failure (Loss of power to Cells E and F) with Cells A and G OOS gal 6 ORIGIN == I in == lL Ibm == IMF == lQ see == IT gpm:= - . ,IDJ1:= Ibm*F MBTU := BTU. 10 mill Cooling Tower Performance 99.92) Thl := ( 118.92) 114.17

                  *F     Tel:=  (98.17 *F 124.11)                 108.11 )

Th2:= ( *F Te2 := ( *F 118.11 105.11 Th3 := ( 118.92) 114.17

                  *F     Te3:=  (99.92).F 98.17 124.11)                 108.11 )

Th4:= ( *F Te4:= ( *F 118.11 105.11

CALCULATION NO. NED-M .. MSD-009 REVISION NO. SA APPENDIXC Page C2 Qvrate Heat load (L42 ) 83 0.00 83 0.17 769 0.35 760 0.50 749 0.75 724 2.00 721 2.17 718 2.33 715 2.50 701 3.32 682 4.98 666 6.65 652 8.32 640 9.98 630 11.50 934 11.65 914 13.32 890 14.98 866 16.65 844 MBTU 18.32 L2:= .-- T2:= *min 823 hr 19.98 804 21.65 786 23.32 527 29.98 452 39.98 406 49.98 385 59.98 330 83.32 293 116.65 212 166.65 181 333.32 178 480.00 487 480.17 481 540.00 476 600.00 474 627.50 471 660.00 411 660.17 406 732.00 386 732.17

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIXC Page C3 SX System Flow rate Q I := 63607* gpm (Total flow to T1 and T2 gpm) Q2 := 63607* gpm (Total flow to T1 and T2 gpm) Basin Mass 6 (Design input 2.1 ) V:= 1.068*10 *gal Ibm BTU 6 p:= 8.33*- C := 1 * - - Mb = 8.9 x 10 Ibm gal P F.Ibm Fans (Active/Total) Time Constant V V

                                                          'tl : = -             't2 := -

fll := 0.956 fl2:= 0.956 QI Q2 f21 := 0.901 f22:= 0.901 Fraction of flow to Tower 1 Fraction of heat load to Tower 1 al := 0.678 a2:= 0.678 PI := 0.678 P2 := 0.678 Find Slopes and Intercepts of cooling towers 1 and 2 MIl := slope(Thl, Tel) B11:= intercept(ThI, Tcl) MI2 := sIope(Th3, Tc3) BI2:= intercept(Th3, Tc3) M21 := sIope(Th2, Tc2) B21:= intercept(Th2, Tc2) M22 := sIope(Th4, Tc4) B22:= intercept(Th4, Tc4) MIl = 0.368 B11 = 56.107F MI2 = 0.368 B12 = 56.107F M21 = 0.5 B21 = 46.055 F M22 = 0.5 B22 = 46.055 F

CALCULATION NO. NED ..M-MSD-009 REVISION NO. SA APPENDIXC Page C4 Calculate Intermediate Constants Al := (- ~I}[ I - (<1.[(1 - fll) + fll*Mllj - (I - al)*(1 - f21 + f21* M21)] A2 := (- ~2}[ I - a2*[( I - fl2) + f12*MI2j - (I - (2).(1 - f22 + f22.M22)]

            ~ 1* (1 - fIl + fIl* M 11) + (1 - ~ I). (1 - f21 + f21* M21 )

DI := ~---------------'---------

            ~2*(l- fI2+ fI2*M12) + (1- ~2).(I- f22+ f22*M22)

D2:=~---------------'----------~ Mb'Cp aJ *fIl*Bll + (1 - al).f2I.B21 Cl := Q I * - - - - - - - - - - V a2*fI2*B12 + (I - a2).f22.B22 C2:= Q 2 * - - - - - - - - - - V 1 -8 F Al = -0.03- Dl = 5.01 x 10 -- F min BTU Cl = 2.96-min 1 -8 F A2 = -0.03- D2 = 5.01 x 10 - - F min BTU C2= 2.96-min Integrating to Solve for Basin Temperature Vb := 77*F i:= 1 .. 99 H:=.1* min st. := i*H I 1

                   ._         (linterp(T2, L2, st i)]

Vb. I .- Vb. + *H 1+ 1 Mb'Cp

 .ti= 100 .. 299      .!L:= .1* min        st. := i*H 1

use uprate heat load with operator action at t=30 minutes to reduce heat load

 ),.,,:= 300 .. 2400            };l,:= .I*min          st. := i*H 1

use uprate heat load with operator action at t=30 minutes to reduce heat load

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIXC Page C5 Results k:= 1,20 .. 7000 107 103 99 95 r.t-. 0 Ubi 91 87 83 79 75 0 2000 4000 6000 8000 s1j Basin Temperature Response vs. Time (sec) use uprate heat load maximum := maximum f- 0 for i E 300 .. 2400 max(Ub) = 99.97 F @ t = 49.9 min maximum f- max(Ub ) if max(Ub ) ~ maximum i i Ub 300

                    = 98.9 F maximum = 99.97 F Ub100 = 89.5 F index :=   index  f- 0 maximum     f-  0 for i E  300 .. 2400 maximum      f-  max(Ub i) if max(Ub ) ~ maximum i

index f- i if max(Ub ) ~ maximum i index = 499 Ub. d = 99.97 F III ex st. d = 2994 sec III ex

CALCULATION NO. NED-M-MSD-009 REVISION NO. 8A APPENDIX C Page C6 Basin Temperature and UHS Heat Load vs. Time

                                                          ,1= 1,26 .. 1000 linterp(T2, L2, st )

i Ub. st. I

                                           -hr-MBTU                  1 F                                                min 77                        83                    0.1 80.19                    713.29                      2.6 83.46                    680.85                      5.1 86.59                    658.04                      7.6 89.56                    639.21                     10.1 91.08                    922.62                     12.6 92.79                    888.28                     15.1 94.29                    853.49                     17.6 95.61                    821.63                    20.1 96.76                    793.76                    22.6 97.73                    716.78                    25.1 98.43                    619.56                    27.6 98.89                      526.1                   30.1 99.2                  507.35                    32.6 99.44                      488.6                   35.1 99.63                    469.85                    37.6

CALCULATION NO. NEO-M-MSO ..009 REVISION NO. SA APPENOIXC Page C7 ii= 1,20 .. 6000 1000~------------------------------------------~ 800 600 linterp{ T2, L2, sti) 400 200 II***************************.************** ........... , .............. . O~------------~----------------------------~ o 1000 2000 3000 4000 5000 6000 Post LOCA Time (sec) UHS Accident Heat Load Profile L42

CALCULATION NO. NEO-M-MSO ..009 REVISION NO. SA APPENOIXC Page CS Scenario 8Dl (Riser Valves Closed) Two Tower Model - (Heat load for Power Uprate) Breaker Failure (Loss of power to Cells E and F) with Cell G OOS gal ORIGIN == I in == IL Ibm == IMF == IQ sec == IT gpm:= - . ,.IDlL.:= Ibm*F MBTU:= BTU.1Q6 mm Cooling Tower Performance 125.27) 97.27) Thl := ( *F Tel:= ( *F 117.37 95.37 120.68) 104.68) Th2:= ( *F Tc2:= ( *F 115.04 102.04 125.27) Tc3 := (97.27).F Th3:= ( *F 117.37 95.37 120.68) 104.68) Th4:= ( *F Tc4:= ( *F 115.04 102.04

CALCULATION NO. NED*M*MSD*009 REVISION NO. SA APPENDIX C Page C9 flJ.2r.~t~ H~~t lQ~Q (I,d2.l 83 0.00 83 0.17 769 0.35 760 0.50 749 0.75 724 2.00 721 2.17 718 2.33 715 2.50 701 3.32 682 4.98 666 6.65 652 8.32 640 9.98 630 11.50 934 11.65 914 13 .32 890 14.98 866 16.65 844 MBTU 18 .32 L2:= .-- T2:= *min 823 hr 19.98 804 21.65 786 23.32 527 29.98 452 39.98 406 49.98 385 59.98 330 83.32 293 116.65 212 166.65 181 333.32 178 480.00 487 480.17 481 540.00 476 600.00 474 627.50 471 660.00 411 660.17 406 732.00 386 732.17

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIX C Page C10 SX System Flow rate Q 1 := 64025* gpm (Total flow to T1 and T2 gpm) Q2 := 64025* gpm (Total flow to T1 and T2 gpm) Basin Mass 6 (Design input 2.1) V:= 1.068*10 *gal Ibm BTU 6 p:= 8.33*- C := 1 * - - Mb = 8.9 x 10 Ibm gal P F.lbm Fans (Active/Total) Time Constant V V

                                                           'tl : = -             't2:=-

fl1 := 0.960 f12:= 0.960 QI Q2 f21 := 0.898 f22:= 0.898 Fraction of flow to Tower 1 Fraction of heat load to Tower 1 a1 := 0.706 a2 := 0.706 PI := 0.706 P2 := 0.706 Find Slopes and Intercepts of cooling towers 1 and 2 MIl := slope(Thl, Tcl) B11:= intercept(Thl, Tcl) MI2 := slope(Th3, Tc3) BI2:= intercept(Th3, Tc3) M21 := slope(Th2, Tc2) B21:= intercept(Th2, Tc2) M22 := slope(Th4, Tc4) B22:= intercept(Th4, Tc4) MIl = 0.241 B11 = 67.142 F M12 = 0.241 B12 = 67.142F M21 = 0.468 B21 = 48.191 F M22 = 0.468 B22 = 48.191 F

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIX C Page C11 Calculate Intermediate Constants Al := (- ~I}[ I - al*[( I - fll) + fll*MII) - (I - al).(1 - 121 + 121.M21)] A2 := (- ~}[ I - a2*[( I - fl2) + fl2*M12) - (I - (2).(1 - 122 + 122* M22)] PI .(1 - fli + fll* M 11) + (I - pI). (1 - f2I + f21* M21 ) DI := ..:...-.....:--------.;;.-----:..-...:..-------...:.. Mb'Cp D2:= p2*(1 - fl2 + fl2*MI2) + (1 - p2).(l - f22 + f22*M22) Mb'Cp aI*fIl*BII + (1 - aI).f2I.B21 CI := QI*----~---...:...--- V a2*fI2*BI2 + (1 - (2)*f22.B22 C2:= Q 2 * - - - - - - - - - - V 1 -8 F Al = -0.04- DI = 3.88 x 10 -- CI F

                                                                             = 3.49-min                                         BTU min 1                                    - 8 F A2 == -0.04-                       D2  = 3.88 x  10 - -

C2 F 3.49-min BTU = min Integrating to Solve for Basin Temperature UbI := 82*F i := 1 .. 99 H:=.1* min st. := i*H 1

                ._        (linterp( T2 ,L2, sti)).

Ub. 1'- Vb. + H 1+ 1 Mb'Cp Ai= 100 .. 299 .!L:=.1. min st.:= i*H 1 use uprate heat load with operator action at t=30 minutes to reduce heat load Ai= 300 .. 2400 .!L:= .I*min st. := j*H 1 use uprate heat load with operator action at t=30 minutes to reduce heat load

CALCULATION NO. NEO-M-MSO-009 REVISION NO. 8A APPENOIXC Page C12 Results ~:= 1,20 .. 7000 107 103 99 95

     ~

0 Ub*1 91 87 83 79 75 0 2000 4000 6000 8000 s~ Basin Temperature Response vs. Time (sec) use uprate heat load maximum := maximum +- 0 for i E 200 .. 2400 max(Ub) = 98.22 F @ t = 29.0 min maximum +- max(Ub i) if max(Ub i ) ~ maximum Ub = 98.2 F 300 maximum = 98.22 F Ub 100 = 94.5 F index := index +- 0 maximum+- 0 for i E 200 .. 2400 maximum +- max(Ub i) if max(Ub ) ~ maximum i index +- i if max(Ub ) ~ maximum i index = 290 Ub. d = 98.22 F m ex st. d = 1740sec m ex

CALCULATION NO. NED ..M ..MSD*009 REVISION NO. SA APPENDIXC Page C13 Basin Temperature and UHS Heat Load vs. Time k:= 1,26 .. 1000 linterp( T2, L2, st i) Ub. MBTU st. I 1 F hr min 82 83 0.1 85.19 713.29 2.6 88.46 680.85 5.1 91.59 658.04 7.6 94.53 639.21 10.1 95.16 922.62 12.6 95.97 888.28 15.1 96.64 853.49 17.6 97.21 821.63 20.1 97.67 793.76 22.6 98.02 716.78 25.1 98.2 619.56 27.6 98.2 526.1 30.1 98.13 507.35 32.6 98.03 488.6 35.1 97.91 469.85 37.6

CALCULATION NO. NED-M ..MSD ..009 REVISION NO. SA APPENDIXC Page C14

                                                         ~:= 1,20 .. 6000 1000r-------------~-----------------------------,

800 600 linterp{ T2, L2, sti) (M::U) 400 200 O~----~------~----------------------------~ o 1000 2000 3000 4000 5000 6000 s~ Post LOCA Time (sec) UHS Accident Heat Load Profile L42

CALCULATION NO. NED .. M ..MSD ..009 REVISION NO. SA APPENDIXC Page C15 Scenario 8D2 (Riser Valves Closed) Two Tower Model - (Heat load for Power Uprate) Breaker Failure (Loss of power to Cells E and F) with Cells G and H OOS gal 6 ORIGIN == 1 in == IL Ibm == IMP == IQ see == IT gpm:= - . mIll

                                                           .JUJL.:= Ibm*P MBTU:= BTU. 10 Cooling Tower Performance 117.91)                 98.91 )

Th1 := .p Tel:= .p ( 112.77 ( 96.77 Th2:= 111.82) .p Te2:= ( 83.82) .p ( 104.74 82.74 117.91) 98.91 ) Th3 := .p Te3 := .p ( 112.77 ( 96.77 Th4:= 111.82) .p Te4:= 83.82) .p ( 104.74 ( 82.74

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIXC Page C16 QQ~~~~ H~~~ lQeQ (L~ 2. ~ 83 0.00 83 0. 17 769 0.35 760 0.50 749 0.75 724 2.00 721 2.17 718 2.33 715 2.50 701 3.32 682 4.98 666 6.65 652 8.32 640 9.98 630 11 .50 934 11 .65 914 13.32 890 14.98 866 16.65 844 18.32 L2:= .MBTU

                                           --         T2:=           *min 823     hr                19.98 804                       21.65 786                       23.32 527                       29.98 452                       39.98 406                      49.98 385                       59.98 330                       83.32 293                      116.65 212                      166.65 18 1                     333.32 178                      480.00 487                      480.17 481                      540.00 476                      600.00 474                      627.50 471                      660.00 411                      660.17 406                      732.00 386                      732.17

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIX C Page C17 SX System Flow rate Ql := 62250'gpm (Total flow to T1 and T2 gpm) Q2 := 62250* gpm (Total flow to T1 and T2 gpm) Basin Mass 6 (Design input 2.1) V:= 1.068* 10 . gal Ibm BTU 6 p:= 8.33*- C := 1 * - - Mb = 8.9 x 10 Ibm gal P F.]bm Fans (Active/Total) Time Constant V V tl:= - 1'2 := - fl1 := 0.968 fl2:= 0.968 Ql Q2 f21 := 0.000 f22:= 0.000 Fraction of flow to Tower 1 Fraction of heat load to Tower 1 al := 0.967 a2:= 0.967 ~I := 0.967 ~2 := 0.967 Find Slopes and Intercepts of cooling towers 1 and 2 Mll := slope(Thl, Tcl) B11:= intercept(Thl, Tel) M12 := slope(Th3, Tc3) BI2:= intercept(Th3, Tc3) M21 := slope(Th2, Tc2) B21:= intercept(Th2, Tc2) M22 := slope(Th4, Tc4) B22:= intercept(Th4, Tc4) Mil = 0.416 B11 = 49.819F M12 = 0.416 B12 = 49.819F M21 = 0.153 B21 = 66.763 F M22 = 0.153 B22 = 66.763 F

CALCULATION NO. NED-M-MSD-009 REVISION NO. 8A APPENDIXC Page C18 Calculate Intermediate Constants Al := (~ ~I}[ I ~ al*[(l ~ fll) + fll* Mll] ~ (I ~ atJ*(l ~ 121 + 121.M21)] A2 := (~ ~2}[ I ~ a2*[( I ~ fl2) + fl2*MI2] ~ (I ~ a2).( I ~ f22 + f22.M22)]

         ~ 1.(l - fIl + fIl* M 11) + (I - ~ I). (l - f21 + f21* M21 )

01 := ..:..-.....:-------...:.---...:.--.:-....:..------~ 02:= ~2*(1 - fI2 + fI2*M12) + (1 - ~2).(1 - f22 + f22*M22) Mb'Cp al*fI1*BII + (I - al).f2I.B21 Cl := QI*----~---..;..--- V a2*fI2*BI2 + (1 - a2).f22.B22 C2:= Q2*----~-~--- V I -8 F Al = -0.03- 01 = 5.1 x 10 -- F Cl = 2.72-min BTU min I - 8 F A2 = -0.03- 02 = 5.1 x 10 - - F min BTU C2 = 2.72-min Integrating to Solve for Basin Temperature UbI := 77*F i:= 1 .. 99 H:=.1* min st.:= i*H 1

               ._          ( linterp( T2 , L2 , s\) J                         use uprate heat load with operator action at Ub. 1'- Ub.+                                 *H 1+         1             Mb'Cp                                     t=30 minutes to reduce heat load
     ~=    100 .. 299    J!,:=  .I*min       st.:= i*H 1

use uprate heat load with operator action at t=30 minutes to reduce heat load

     ~:=   300 .. 2400            J!,:=  .I*min           st. := i*H 1

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIXC Page C19

                                                                  ~:=  1,20 .. 7000 Results 109 105 101 97
      ~

0 Ubi 93 89 85 81 77 0 2000 4000 6000 8000 stj Basin Temperature Response vs. Time (sec) use uprate heat load maximum := maximum +- 0 for i E 300 .. 2400 max(Ub) = 97.45 F @ t = 39.9 min maximum +- max(Ub j ) if max(Ub j ) ~ maximum Ub 300

                 = 97.1 F Ub     = 89.5 F                                                                  maximum = 97.45 F IOO index :=   index +- 0 maximum +- 0 for i E 300 .. 2400 maximum +- max(Ub j ) if max(Ub j) ~ maximum index +- i if max(Ub j ) ~ maximum index = 399 Ub. d    = 97.45 F In ex                st. d   = 2394 sec In ex

CALCULATION NO. NED-M-MSD-009 REVISION NO. SA APPENDIX C Page C20 Basin Temperature and UHS Heat Load vs. Time j;= 1, 26 .. 1000 linterp(T2, L2, st ) i Ub. st. I MBTU hr 1 F min 77 83 0.1 80.19 713.29 2.6 83.46 680.85 5.1 86.59 658.04 7.6 89.55 639.21 10.1 90.77 922.62 12.6 92.21 888.28 15.1 93.46 853.49 17.6 94.55 821.63 20.1 95.5 793.76 22.6 96.29 716.78 25.1 96.82 619.56 27.6 97.11 526.1 30.1 97.27 507.35 32.6 97.37 488.6 35.1 97.43 469.85 37.6

CALCULATION NO. NED*M*MSD*009 REVISION NO. SA APPENDIX C Page C21 1.v:= 1,20 .. 6000 1000~----------------------------------------~ 800 Iinterp{ T2, L2, s~) (M:m) 400 200 y *********************************************** ***....... ......................... * ....................... ........................................................................................................................................................ I O~----~------~--------------------------~ o 1000 2000 3000 4000 5000 6000 s~ Post LOCA Time (sec) UHS Accident Heat Load Profile L42 (FINAL PAGE OF APPENDIX C)}}