ML101940364

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Calculation PBNP-994-21-02, Rev. 0, HELB Reconstitution Program - Task 2, High Energy System Selection, Enclosure 1, Attachment 2
ML101940364
Person / Time
Site: Point Beach  NextEra Energy icon.png
Issue date: 10/21/2008
From: Agan C
Automated Engineering Services Corp
To:
Florida Power & Light Co, Office of Nuclear Reactor Regulation
References
PBNP-994-21-02, Rev. 0
Download: ML101940364 (31)
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Text

ENCLOSURE 1 ATTACHMENT 2 NEXTERA ENERGY POINT BEACH, LLC POINT BEACH NUCLEAR PLANT, UNITS I AND 2 LICENSE AMENDMENT REQUEST 261 EXTENDED POWER UPRATE RESPONSE TO REQUEST FOR ADDITIONAL INFORMATION PBNP-994-21-02, REVISION 0, HELB RECONSTITUTION PROGRAM - TASK 2, HIGH ENERGY SYSTEM SELECTION 30 pages follow

Automated Engineering CALCULATION SHEET Page 4 of 11 Services Corp Calc. No.: PBNP-994-21-02 Client: FP&L Energy Revision: 0 Station: Point Beach Nuclear Plant Prepared By: CE Agan Calc.

Title:

HELB Reconstitution Program - Task 2, High Energy System Reviewed By: R Krukowski Selection Safety Related Yes X No Date: 10/21/08 TABLE OF CONTENTS Item Page 1.0 Purpose and Summary Results 5 2.0 Methodology 6 3.0 Acceptance Criteria 7 4.0 Assumptions 7 5.0 Design Inputs 7 6.0 Design Calculations 8 7.0 Conclusions 10 8.0 Attachments 10 Rev. 2 Form 3.1-3 Form 3.1-3 Rev. 2

I Engineering CALCULATION SHEET Page 5 of 11

/Automated Services Corp Calc. No.: PBNP-994-21-02 Client: FP&L Energy Revision: 0 Station: Point Beach Nuclear Plant Prepared By: CE Agan Calc.

Title:

HELB Reconstitution Program - Task 2, High Energy System Reviewed By: R Krukowski Selection Safety Related Yes X No Date: 10/21/08 1.0 Purpose and Summary Results:

The purpose of this calculation is to document the selection of piping systems, or portions thereof, outside containment that meet the definition of high energy lines for the Point Beach Nuclear Plant.

Item I of the attachment to the AEC letter to WEP dated December 19, 1972 [DI 5.1 ], describes, in part, piping system conditions that do not require evaluation for pipe whip - "... need not be provided if any of the following conditions will exist:

(a) Both of the following piping system conditions are met:

(1) the service temperature is less than 2000 F; and (2) the design pressure is 275 psig or less" This would indicate that if either condition was not met, the system would be considered "high energy". Conventionally, this has been called a "pressure or temperature" plant. At clarification meetings on'January 4, 1973 (Prairie Island) and January 5, 1973 (Kewaunee), it was agreed that the licensing basis for a high energy line for both plants would be as stated in Enclosure 1, Request No.

9.29.6(a) of the January 11, 1973 AEC letter [DI 5.2] to NSP, which is included below. AEC letter dated January 18, 1973 to WPS [DI 5.3] stated that the agreements reached at the NSP meeting also applied to WPS. There is no indication that these clarifications were ever transmitted to Point Beach.

However, the AEC SER [DI 5.4] for Point Beach stated that "pressure and temperature" defined high energy piping systems.

Question: Should the pipe design pressure and temperature conditions specified be used only to identify those pipes that would require pipe whip protection or should they be used to identify pipes carrying a high energy fluid that if ruptured would require protection to meet any of the criteria, including pipe whip criteria?

Answer: The pipe design pressure and temperature conditions should be used to identify high energy fluid pipes for use with any of the criteria. For example, the charging line is not considered to be a high energy line for these criteria, because service temperature is less than 2000 F.

Point Beach FSAR Appendix A.2 [DI 5.14] states "High energy piping systems are defined as systems where the combined pressure and temperature conditions of the fluid exceeds 275 psig and 2000 F. It should be Rev. 2 Form 3.1-3 Form 3.1-3 Rev. 2

//1W Automated Engineering CALCULATION SHEET Page 6 of 11 Services Corp Calc. No.: PBNP-994-21-02 Client: FP&L Energy Revision: 0 Station: Point Beach Nuclear Plant Prepared By: CE Agan Calc.

Title:

HELB Reconstitution Program - Task 2, High Energy System Reviewed By: R Krukowski Selection Safety Related Yes X No Date: 10/21/08 noted that a more accurate definition would be "those having a service temperature of 2000 F and above and a design pressure above 275 psig." HELB Task 20 will revise FSAR Appendix A.2 accordingly.

The result of the original selection of systems is documented in FSAR Appendix A.2.2.12, which identified four systems (main steam, feedwater, steam generator blowdown and sampling system). It is not known why the sampling system was included. FSAR Appendix A.2.9 identifies these lines to be 3/8", which should have been excluded by the provisions of Item 3 of the enclosure to the December 19, 1972 AEC letter. No documentation has been located that would adequately explain why CVCS letdown was not identified.

FSAR Appendix A.2 discussed systems that traversed the Primary Auxiliary Building, but did not address any potential high energy systems in the Turbine Building.

This calculation identifies all systems, or portions thereof, outside of containment that meet definition of high energy and size criteria. Excluded from review were systems that are not normally operating systems (i.e.

Safety Injection, Containment Spray, Residual Heat Removal, Auxiliary Feedwater Pump Discharge, Chemical Injection, etc.) and piping systems 1" and smaller (i.e. sampling, hydrogen, nirogen, etc.). Table 6.0-1 contains all piping systems whose design pressure is greater than 275 psig and their associated service (operating) temperature. Those systems, or portions thereof, are identified in the table as meeting the high energy criteria are:

Main Steam (MS) Feedwater (FW)

CVCS Letdown (CV) Steam Generator Blowdown (SB)

Condensate (CS) Heater Drain Tank Pump Discharge (FD)

Extraction Steam (EX) Heater and Reheater Vents & Drains (FD & MSR)

2.0 Methodology

The applicable flow diagrams, piping design tables contained in Westinghouse Piping Class Summary DG-M02 (piping Classes 301 and higher) [DI 5.5], Bechtel Piping Class Summary DG-M03 [DI 5.6]

and Stone and Webster Piping Class Summary DG-M04 [DI 5.7] were reviewed to determine which piping systems, or portions thereof, had design pressures greater than 275 psig. For those identified, their operating temperatures were determined from a combination of Heat Balance Drawings [DI 5.8 and 5.9], CVCS Temperature Documents [DI 5.10 and 5.11 ], Operating Procedure [DI 5.12],

Operating Instructions [DI 5.18], Steam Tables [DI 5.13] and Final Safety Analysis Report [DI 5.14]

as discussed in Section 6.0 of this calculation. Operating temperatures were identified for two NSSS power levels (1545 MWt and 1806 MWt). Design Input 5.19 documents that no new systems or lines became high energy due to EPU conditions. Item 3 of the attachment to Design Input 5.1 excludes Form 3.1-3 Rev. 2

/, j f Engineering Services Automated Corp CALCULATION SHEET Page 7 of 11 Calc. No.: PBNP-994-21-02 Client: FP&L Energy Revision: 0 Station: Point Beach Nuclear Plant Prepared By: CE Agan Calc.

Title:

HELB Reconstitution Program - Task 2, High Energy System Reviewed By: R Krukowski Selection Safety Related Yes X No Date: 10/21/08 postulating longitudinal and circumferential breaks in piping runs 1" nominal pipe size and smaller.

Throughout Design Input 5.1, terms such as "normal operation" are used. Historically, systems that are not normally operating have not.been evaluated for HELB events, even if they meet the-pressure and temperature criteria when they are running. Start-up and shutdown are assumed to be too infrequent to be considered normally operating. This calculation and FSAR Appendix A.2 address hot shutdown and power operation for HELB events.

3.0 Acceptance Criteria:

The acceptance criteria for this calculation is compliance with the requirements of the December 19, 1972 AEC letter as clarified in January 1973, the AEC SER and FSAR Appendix A.2.

4.0 Assumptions The piping class summaries, heat balance drawings, CVCS temperatures, FSAR, steam tables, etc.

utilized are correct and representative of plant design and operating conditions.

The operating temperatures for main steam and steam generator blowdown are at hot shutdown conditions and the remaining systems are at full power operation.

5.0 Design Inputs:

5.1 AEC letter to WEP dated December 19, 1972, A Giambusso to JG Quale 5.2 AEC letter to NSP dated January 11, 1973, A Giambusso to AV Dienhart, minutes of January 4, 1973 meeting 5.3 AEC letter to WPS dated January 18, 1973, A Giambusso to EW James, minutes of January 5, 1973 meeting 5.4 AEC Safety Evaluation Report 5.5 Westinghouse Piping Class Summary, DG-M02, Revision 10 5.6 Bechtel Piping Class Summary, DG-M03, Revision 18 Rev. 2 3.1-3 Form 3.1-3 Rev. 2

M Automated jf Engineering Services Corp CALCULATION SHEET Page 8 of 11 Calc. No.: PBNP-994-21-02 Client: FP&L Energy Revision: 0 Station: Point Beach Nuclear Plant Prepared By: CE Agan Calc.

Title:

HELB Reconstitution Program - Task 2, High Energy System Reviewed By: R Krukowski Selection Safety Related Yes X No Date: 10/21/08 5.7 Stone & Webster Piping Class Summary, DG-M04, Revision 2 5.8 Heat Balance Diagram, 125225-HB(S)-101-1, 04/17/08, 1546.6 MWt 5.9 Heat Balance Diagram, 125225-HB(S)-300-5, 4/17/08, CEIT-42.6, 1806 MWt 5.10 CVCS Letdown Temperature Trend Spread Sheet, October - November, 2007 5.11 CVCS Letdown Temperature - e-mail, Kusnir and Agan, 7/11/08 5.12 Operating Procedure OP-5E, Revision 8 5.13 Thermodynamic Properties of Steam, JH Keenan and FG Keyes, Thirty-Secon Printing 5.14 Final Safety Analysis Report, Appendix A.2, Revision 6/07 5.15 DIT-PB-EPU-08-0015, dated 2/18/08 5.16 DIT-PB-EPU-AES-0001, dated 4/28/08 5.17 DIT-PB-EPU-AES-0005, dated 7/10/08 5.18 Operating Instruction 14, Revision 32, Section 3.3.7.a 5.19 DIT-PB-EPU-AES-0009, dated 10/7/08 6.0 Design Calculations:

Attached Table 6.0-1 identifies all piping systems, or portions thereof, that have design pressures above 275 psig and their associated operating temperature. The following calculations provide discussions for the selection process.

6.1 Extraction Steam (EX) 6.1.1 The design pressure for these lines was obtained from the P&IDs and DI 5.6 6.1.2 The operating temperature for these lines was obtained from DIs 5.8 and 5.9 Rev. 2 Form 3.1-3 Rev. 2

I Engineering CALCULATION SHEET Page 9 of 11

/, Services AutomatedCorp Calc. No.: PBNP-994-21-02 Client: FP&L Energy Revision: 0 Station: Point Beach Nuclear Plant Prepared By: CE Agan Calc.

Title:

HELB Reconstitution Program - Task 2, High Energy System Reviewed By: R Krukowski Selection Safety Related Yes X No Date: 10/21/08 6.2 Condensate (CS) 6.2.1 The design pressure for these lines was obtained from the P&IDs and DI 5.6 6.2.2 The operating temperature for these lines was obtained from Dis 5.8, 5.9 and 5.18 6.3 Chemical and Volume Control (CV) 6.3.1 The design pressure for these lines was obtained from the P&IDs and DI 5.5 6.3.2 The temperature for the letdown lines was obtained from Dis 5.10 and 5.11 6.3.3 The temperature for the charging pump discharges to the containments was obtained from DI 5.12 6.4 Feedwater (FW) 6.4.1 The design pressure for these lines was obtained from the P&IDs and DI 5.6 6.4.2 The operating temperature for these lines was obtained from Dis 5.8 and 5.9 6.5 Heater Drains Pump Discharge, Heater Drains & Vents (FD) 6.5.1 The design pressure for these lines was obtained from the P&IDs and DI 5.6 6.5.2 The operating temperature for these lines was obtained from Dis 5.8 and 5.9 6.6 Main Steam (MS) 6.6.1 The design pressure for these lines was obtained from the P&IDs and DI 5.6 6.6.2 The operating temperature for these lines was obtained from the steam tables assuming saturated steam at hot standby pressure conditions (1005 psig)

Form 3.1-3 Rev. 2

/I Automated I& Engineering CALCULATION SHEET Page 10 of 11 Services Corp Caic. No.: PBNP-994-21-02 Client: FP&L Energy Revision: 0 Station: Point Beach Nuclear Plant Prepared By: CE Agan Calc.

Title:

HELB Reconstitution Program - Task 2, High Energy System Reviewed By: R Krukowski Selection Safety Related Yes X No Date: 10/21/08 6.7 Moisture Separator Reheater (MSR) 6.7.1 The design pressure for these lines was obtained from the P&IDs and DI 5.6 6.7.2 The operating temperature for these lines was obtained from DIs 5.8 and 5.9 6.8 Steam Generator Blowdown (SB) 6.8.1 The design pressure for these lines was obtained from the P&IDs and DI 5.6 6.8.2 The operating temperature for the lines from the containment penetration to the SGB heat exchangers and the-flash tank angle valves was obtained from the steam tables assuming a saturated liquid at hot standby pressure conditions (1005 psig).

7.0

Conclusions:

This calculation concluded that the original selection of high energy systems identified in the FSAR were correct for the Primary Auxiliary Building, except for the sampling system and CVCS letdown lines. However, the FSAR does not identify the high energy systems in the Turbine Building.

The attached Table 6.0-1 identifies those systems, or portions thereof, that traverse the Facade, Primary Auxiliary Building and Turbine Building and meet the definition of high energy.

8.0 Attachments

8.1 . Design Input 5.8, Heat Balance at 1546.6 MWt 8.2 Design Input 5.9, Heat Balance at 1806.0 MWt 8.3 Design Input 5.10, CVCS letdown temperature trend spread sheet 8.4 Design Input 5.2, AEC letter to NSP 8.5 Design Input 5.3, AEC letter to WPS 8.6 Design Input 5.17, CVCS Letdown Temperature Form 3.1-3 Rev. 2

>1

/Automated Engineering Services Corp CALCULATION SHEET Page 11 of II Calc. No.: PBNP-994-21-02 Client: FP&L Energy Revision: 0 Station: Point Beach Nuclear Plant Prepared By: CE Agan Calc.

Title:

HELB Reconstitution Program - Task 2, High Energy System Reviewed By: R Krukowski Selection Safety Related Yes X No Date: 10/21/08 8.7 Design Input 5.17, DIT-PB-PB-EPU-AES-0005 Rev. 2 3.1-3 Form 3.1-3 Form Rev. 2

Calculation PBNP-994-21-02 Rev. 0 Page 1 of 1 POINT BEACH NUCLEAR PLANT HELB RECONSTITUTION PROGRAM TASK 2 - TABLE 6.0-1 HIGH ENERGY SYSTEM SELECTION

~PIPIN7r P R ES'-S VEM P ' TEMJP ~ENER'G, ~ ~ ."~

SIS F PEGS F V Y DE FRIPI Tt EX-1 GD-1 400 438 461 Y High pressure turbine to #5 heaters CS-1 GB-4 400 83 91 N CS pumps to #1 heaters CS-2 GB-4 400 154 166 IN #1 heaters to #2 heaters CS-3 GB-4 400 205 215 Y #2 heaters to #3 heaters CS-4 GB-4 400 272 284 Y #3' heaters to #4 heaters CS-5 GB-4 400 347 361 :Y #4 heaters to feedwater pump suctions CS-6 GB-4 400 83 91 N Recirculation to control valve to condensate storage tanks CS-7 GB-4 & 6 400 83 91 N Condensate pumps to various pumps CS-8 GB-4 400 83 91 N Condensate to air-ejectors, etc.

CS-9 GB-1 & 8 370 & 400 83 91 N To SGB heat exchangers CS-10 GB-8 400 325 320 Y From SGB heat hxchangers CV-1 CH-601 R-1 700 280 280 Y Containment to non-regenerative heat exchangers CV-2 CH-601 R-1 700 115 115 N Down stream of non-regenerative heat exchangers CV-3 CH-2502R-1 2735 110 110 N Charging pump discharges to containment FW-1 DB-1 1525 351 365 Y Feedwater pumps to#5 heaters FW-2 DB-1 1525 431 457 Y #5 heaters to containment FW-3 GB-2 1525 351 365 Y Feedwater pump recirculation to condensers FD-1 GB-5 & GB-3 370 359 375 Y #5 heaters to control valve to #4 heaters and condensers FD-2 GB-3 517 352 365 Y Heater drain pumps to feedwater pump suction FD-3 HB-5 550 278 289 Y #3 heater vents FD-4 HD-5 550 351 366 Y #4 heater vents MS-1 EB-1 & 8 1085 547 547 Y From containment to various services MSR-1 GB-2 1085 511 507 Y Reheater drains to #5 heaters and condensers SB-1 EB-12 1085 547 547 Y Containment to angle valves & heat exchangers

/ * '*:':'.-,*#;, . .,g IUNITIED STA'TES

  • 1 '.

ATOMIC ENERGY COMMISSION R WAS14INGTON. D.C. 205,45

.Januar .11, 1973 Docket Nos. 50-282 50-306 O 1r. A. V. Dienhart Vice ]'resident - Engineering Northern States Power Company I A*

  • Z 414 Nicoliet Avenue FIJnneapolis, HIinnesota 55401

Dear MIr. Dienhart:

In our meeting of January /4, 1973, you reqpie:;tcd clarification of the guidelines and criteria enclosed with our Decemb'er 12, 1972 lett..r re-arding a postulated break in a pipe carrying a high-energy -luid in the Prairie Island Nuclear Gonerating Plant, Units 1 and 2.

Tze enclosed clarifications are a result of the staff's review of the questions dirscussed in the Ja:uary. ., 1973 weting, and should be used in the preparation of dcsgn rodifications of your facility to ztccotmodate" the postula-ud pi-pe break.

The rinjor clarifications are that su.!pp]emental gudeolines are provided regarding (a) the location of postulated breaks in addiLion to lorationr. speciflied in -;iquest No. 9.29.7 and (b) protection of safety-significant -;'ten:s from adverse environments in. addition to that specified in 9.29.11(a).

We understand fro;., the meeting of Janamry 4. 1973 that YoU plan to provide an amend-e'nt to tLe ;pplicat ion doscribi:zq your prro.-:ed r.odificatjons by Fcbruar:: 1, 1973. Please inforn,; us within 7 nays after receipt o0 this letter if your plans for filing the anend;;int have changed.

Since rcly, A. (4Z17'1*6 iki p utL-,,V"D.rrCCto r for Reactor Frojects Directorate of Licensing Enclo;ure:

As stated J

.4 ENCLOSUlRE Pd-e. C-

  • 2.

NSP requested interpretation of thi AEC guidelines attached to the December 12, 1972 letter to them requesting con.-ideration of the postulared accident. The questions raised by NSP and the staff's response is stummarized below. Request numbers refer to the AEC guidelines.

"us-o. Shul th ip cs pressure and te'mpe ra rtire conditions spcfe heu*dol oiiniytose pipes that ,,otl.d req~uire.

/ pipewi rtC*o rsold they boe tu.-d to identify pipe-.; carrying a high energy fluid that i f ruptured would require- protection to meet an,, of the criteria, including pipe whip criteria?

Ansý:er: The pipe design pressure and temperature-c-onditions should be used to identi y high energy fluid pipes for use with any of the criteria. For exanple, the -hargIng line is not considered to be a.

high energy line for these c-iteria, because service temperature is less than 200°F.

Request No. 29.6(d)

Question; Does Note 1 for this paragraph mean that the steam flow-limiter -.:ay be considered to reduce the force acting on the section of pipe containing the limiter? For exwaaple, does the force equal 1.2 x fluid pressure x nozzle throat area?

An;,. Cr Note 1 does m.ean that thC 1 tea-m flo,., limitCr may be considered; however, the m;anitude of the coefficient in the force equation is subjcct: to analysis.

Rcu,:'.>st No. 9.29.7 h (2)

Oues-tion: Shou3d the coefficient of the a.gebraic expressions in this paragrap'h be 0.8, as- in the Prairie Island criteria, or 0.9 as in the MNonticello criteria?

Answer: 0.8 is correct.

"'1,C-L-Sno-J PSWNP..qqq10. 0 CRev. 6

~2~/crZ 0 UNITED STATES .-

"f ATOMIC ENERGY COMMISSION WASHINGTON. D.C. -Z0545 January 18, 1973 Dociket No. 50-305 MEMORANDhIM FrLB

- L/~ ~ O~2 R. C. DeYoung, Assistant Director for Pressurized Water Reactors, L

-THRU. Karl Kniel, Chief, PWR Project Branch No. 2, L MEETING WITH WISCONSIN PUBLIC SERVICE CORPORATION - KEWAUNEE NUCLEAR POwER PLANT Enclosed is a summary of significant results of a meeting held with representatives of the Wisconsin Public Service Corporation on January 5, 1973, to discuss potentiala problems with the .rupture outside containment of lines carrying .high energy fluids. Persons present during the meeting are indicated In the attendance list.

L. P. Crocker, Project Manager K>

Enclosures:

PWR Project Branch No. 2 Directorate of Licensing

i. Meeting Summary
2. Revisions to Criteria
3. Additional Staff Position
4. Attendance List 1(

I I I

X&OAUmpH

C+Lcuv*-no"  ?1Pqq-z-IZ&-v, c9 Vt-rr",4+t-r g~ 5 ENCLOSURE NO. 1 WISCONSIN PUBLIC SERVICE CORPORATION KEWAUNEE NUCLEAR POWER PLANT DOCKET NO. 50-305 MEETING NOTES OF JANUARY 5, 1973 A meeting was held on January 5, 1973 with representatives of the Wisconsin Public Service Corporation to discuss the potential for, and problems associated with, the rupture outside containment, of a line carrying high-energy fluid. The meeting was a follow-on to a previous meeting on the same subject held on November 16, 1972 and was in specific response to our letter of December 15, 1972 which provided criteria to be considered for the design of high-energy fluid -systems outside containment.

The meeting was held-at-the-request of the applicant-to discuss the results of the applicants' stress analyses of the piping runs, the postulated break points in these piping runs together with the rationale for selection of these break points, and the applicant's interpretation of the criteria included with our December 15 letter. A meeting had been held the previous day on the same subject with the Northern States Power Company regarding the Prairie Island Nuclear Generating Plant.

Since the architect-engineer (Pioneer Service & Engineering Co.)

designed both Kewaunee and Prairie Island many items resolved at the Prairie Island meeting were equally applfcable to Kewaunee.

The meeting began by having one of the representatives of Pioneer Service

& Engineering Co. summarize the alterations to the criteria forwarded with the December 15 letter that had been agreed to the previous day. For the most part, these alterations were made to clarify the intent of the criteria, although one substantive change was made. These revisions are shown at Enclosure 2.

Starting with these revised criteria as a basis, the applicant described the steam line and branch line locations using an isometric drawing of the layout of the steam lines and presented his stress analyses of the main steam piping systems. The analyses indicated that the Kewaunee main steam line stresses are well within the allowable stresses for such lines. On the basis of these analyses, however, the applicant had selected those points where the stresses were highest as the postulated break points for the piping runs, in accordance with the criteria contained in our December 15 letter.

Agan, Charles E. Apr-_4 a.

From: Kusnir, Michael [MICHAEL.KUSNIR@fpl.com]

Sent: Friday, July 11, 2008 1:18 PM To: Agan, Charles E.

Subject:

RE: Heads Up for PB DITs Charles, I would agree with your logic.

Mike Kusnir Point Beac U Pro-ec 920-755-7563 From: Agan, Charles E. [1]

Sent: Friday, July 11, 2008 12:56 PM To: Kusnir, Michael Cc: Reiff, Mark; Doc Setlur

Subject:

RE: Heads Up for PB DITs Mike:

The temperature values we were looking for are upstream and downstream of the non-regenerative heat exchanger. Since there is only a minor increase (0.7 deg F) from the cold leg to the regenerative heat exchanger, we will use the temperatures at the current rating.

Thank you, Charles From: Kusnir, Michael [mailto: MICHAEL.KUSNIR@fpl.com]

Sent: Wednesday, July 09, 2008 4:40 PM To: Agan, Charles E.

Cc: Reiff, Mark

Subject:

Heads Up for PB DITs

Charles,
  • Today I gave 2 DITs to our Admin staff to send these 2 DITs. I have attached the unsigned version here. The one has 5 attachments. I will not send all of them here except for the current plant Heat Balance to confirm that it fulfills what you need.

If you don't see official DITs by Friday, give me a holler.

Mike Kusnir Point Beach EPU Project 920-755-7563 7/16/2008

C,4LoCU1 -a p*P S N'P -*99,t4 *7_

PA-r-, F- I Point Beach. EPIJ Project Design Information Transmittal (DIT)

From: .Point 1each -. EPU Project - Mike Kusrnir To: AES In, - Doc Setlur, Mark Reiff. Charles Agan Mod or Trmcking Number. n/a Date: 719108 DIT No: DI:TPBU-EPU-,08-AES-0005 Mod Titfe: Analysis of Main FW & Main Steam L~ne HELB Ous t nt Unit I .Unit 2 0 Quality Plant. PointBeach Common R classification: SR

SUBJECT:

This: DIT transmits the CVCS Letdown Temperature estimated to exist after power uprate to 1806 MWt.

Check if appftitble:

[] This DIT confirms information ipreviouSly transmitted-on by

- [ This information is preliminary. Saeeexpianratn-b elow.

SOURCE OF INFORMATION (Source documrentsshould be unrquely kdentified)

The irfonnation cotained in this DIT was obtainedIfrorn EPU WECAIR Item 3.5.57 which used: WEC Power Uprate Feasibility StudyWEPW07-21 Table4.2.1 -2.Case 4.

DESCRIPTION OF. INFORMATION: The following information is considered best available. The temperature value is derived from analysis as opposed to actual. field mIeasurement.

Letdown flRowis via the RCS coldleg, The current-cold leg~temperature value (pr6eýupratýe)is542,0 deg F, and this will increase. at.542 deg F afte power uprateto 1806&Mft

ISTRIBUTION1I (Reclipients should receive all alto aments unlesszotherwise. inieated. All attachments are uncontualed udess othervisepindicated)

There are no attachments tothis-DIT.

PRE* EOY B(,-e Prepsrer* a~nd Approver may!bethb e stnsrdperson) 6'I0UMech-; .*.

Mike.Kus~nir IU eh Preparer-Name Position Signature Date APPRVEDBY (he ogniantEngine~ering Supervisor has relose adulliqriiy-Consultt jesiuri Interfac Agreement or local~proioedures to dedternine W~ho else~ has release ati oty)

Lawrence, Tobir FPiJ DesignDate Approver:Name: Positon igareDate Acopy &fthe DIT atgwtlari atachmeiits not on file) shouild.ibe sent.to the moilifcation filce

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t NOT FOR:,GUARANsTEE)

I I BY PREPARED DATE I ýEý..Y DATE -O I-SESSII.EW ......

Calculation PBNP-994-21-02 Rev. 0 Attachment 8.3 Unit I T-127 Unit 1 - T-145 Unit 2 T-127 Unit 2 - T-145 Letdown temp at regen HX outlet Letdown temp at non regen HX outlet Letdown temp at regen HX outlet Letdown temp at non regen HX outlet 13-Nov-07 4:40:00 PM 268.0469 13-Nov-07 4:40:00 PM 109.7891 13-Nov-07 4:40:00 PM 255.5469 13-Nov-07 4:40:00 PM 108.00781 13-Nov-07 3:20:00 PM 269.6875 13-Nov-07 .3:20:00 PM 110.0469 13-Nov-07 3:20:00 PM 256.0938 13-Nov-07 3:20:00 PM 108.14844 13-Nov-07 2:00:00 PM 269.6875 13-Nov-07 2:00:00 PM 109.7422 13-Nov-07 2:00:00 PM 255.5469 13-Nov-07 2:00:00 PM 108.171875 13-Nový07 12:40:00 PM 269.6875 13-Nov-07 12:40:00 PM 110.2109 13-Nov-07 12:40:00 PM 255.5469 13-Nov-07 12:40:00 PM 108.171875 13-Nov-07 11:20:00 AM 268.0469 13-Nov-07 11:20:00AM 110,2344 13-Nov-07 11:20:00 AM 254.9219 13-Nov-07 11:20:00 AM 108.24219 13-Nov-07 10:00:00 AM 269.1406 13-Nov-07 10:00:00 AM 110.0703 13-Nov-07 10:00:00 AM 253.9063 13-Nov-07* 10:00:00 AM 108.265625 13-Nov-07 8:40:00 AM 268.9844 13-Nov-07 8:40:00 AM 109.9531 13-Nov-07 8:40:00 AM 253.0469 13-Nov-07 8:40:00 AM 108.265625 13-Nov-07 7:20:00 AM 268.9844 13-Nov-07 7:20:00 AM 109.9766 13-Nov-07 7:20:00 AM 250.8594 13-Nov-07 7:20:00 AM 108.265625 13-Nov-07 6:00:00 AM 270.0781 13-Nov-07 6:00:00 AM 109.9063 13-Nov-07 6:00:00 AM 252.5 13-Nov-07 6:00:00 AM 108.265625 13-Nov-07 4:40:00 AM 270.1563 13-Nov-07 4:40:00 AM 110.2109 13-Nov-07 4:40:00 AM 251.9531 13-Nov-07 4:40:00 AM 108.28906 13-Wav-07° 3:20.00AM 269.8438- 1N,6-07 -320:00AM 1`10:0234 13-Nov-07 3:12000-AM .252.5- 3120:00WAM -D08359375- .13-Nv.v07 ..

13-Nov-07 2:00:00 AM 269.8438 13-Nov-07 2:00:00 AM 110.1172 13-Nov-07 2:00:00 AM 253.0469 13-Nov-07 2:00:00 AM 108.359375 13-Nov-07 12:40:00 AM 269.5313 13-Nov-07 12:40:00 AM 110.0469 13-Nov-07 12:40:00 AM 254.1406 13-Nov-07 12:40:00 AM 108.38281 12-Nov-07 11:20:00 PM 270.0781 12-Nov-07 11:20:00 PM 110.0703 12-Nov-07 11:20:00 PM 254.6875 12-Nov-07 11:20:00 PM 108.42969 12-Nov-07 10:00:00 PM 269.5313 12-Nov-07 10:00:00 PM 110.1641 12-Nov-07 10:00:00 PM 255.5469 12-Nov-07 10:00:00 PM 108.42969 12-Nov-07 8:40:00 PM 269.5313 12-Nov-07 8:40:00 PM 110.0703 12-Nov-07 8:40:00 PM 255.5469 12-Nov-07 18:40:00 PM 108.42969 12-Nov-07 7:20:00 PM 268.9844 12-Nov-07 7:20:00 PM 110.0703 12-Nov-07 7:20:00 PM 254.8438 12-Nov-07 7:20:00 PM 108.42969 12-Nov-07 6:00:00 PM 269.5313 12-Nov-07 6:00:00 PM 110.1406 12-Nov-07 6:00:00 PM 253.2031 12-Nov-07 6:00:00 PM 108.453125 12-Nov-07 4:40:00 PM 265.1563 12-Nov-07 4:40:00 PM 110.2813 12-Nov-07 4:40:00 PM 252.7344 12-Nov-07 4:40:00 PM 108.453125 12-Nov-07 3:20:00 PM 268.9844 12-Nov-07 3:20:00 PM 109.7656 12-Nov-07 3:20:00 PM 252.1875 12-Nov-07 3:20:00 PM 108.453125 12-Nov-07 2:00:00 PM 269.5313 12-Nov-07 2:00:00 PM 109.7422 12-Nov-07 2:00:00 PM 252.1875 12-Nov-07 2:00:00 PM 108.453125 12-Nov-07 12:40:00 PM 269.7656 12-Nov-07 12:40:00 PM 109.7188 12-Nov-07 12:40:00 PM 251.7969 12-Nov-07 12:40:00 PM 108.47656 12-Nov-07 11:20:00 AM 270.3125 12-Nov-07 11:20:00 AM 110.3516 12-Nov-07 11:20:00 AM 252.8906 12-Nov-07 11:20:00 AM 108.47656 12-Nov-07 10:00:00 AM 269.2188 12-Nov-07 10:00:00 AM 110.1641 12-Nov-07 10:00:00 AM 253.9844 12-Nov-07 10:00:00 AM 108.5 12-Nov-07 8:40:00 AM 268.125 12-Nov-07 8:40:00 AM 110.1172 12-Nov-07 8:40:00 AM 255.625 12-Nov-07 8:40:00 AM 108.5 12-Nov-07 7:20:00 AM 269.2188 12-Nov-07 7:20:00 AM 109.6953 12-Nov-07 7:20:00 AM 256.3281 12-Nov-07 7:20:00 AM 108.5 12-Nov-07 6:00:00 AM 268.8281 12-Nov-07 6:00:00 AM 110.2109 12-Nov-07 6:00:00 AM 255.7813 12-Nov-07 6:00:00 AM 108.5 12-Nov-07 4:40:00 AM 268.8281 12-Nov-07 4:40:00 AM 110.375 12-Nov-07 4:40:00 AM 256.3281 12-Nov-07 4:40:00 AM 108.5 12-Nov-07 3:20:00 AM 268.2813 12-Nov-07 3:20:00 AM 110.1172 12-Nov-07 3:20:00 AM 255.7031 12-Nov-07 3:20:00 AM 108.5 12-Nov-07 2:00:00 AM 268.2813 12-Nov-07 2:00:00 AM 110.0703 12-Nov-07 2:00:00 AM 255.4688 12-Nov-07 2:00:00 AM 108.52344 12-Nov-07 12:40:00 AM 269.375 12-Nov-07 12:40:00 AM 110.0938 12-Nov-07 12:40:00 AM 254.8438 12-Nov-07 12:40:00 AM 108.52344 11-Nov-07 11:20:00 PM 268.2813 11-Nov-07 11:20:00 PM 110.2578 11-Nov-07 11:20:00 PM 253.75 11-Nov-07 11:20:00 PM 108.52344 11-Nov-07 10:00:00 PM 268.8281 1 -Nov-07 10:00:00 PM 110.1875 11-Nov-07 10:00:00 PM 253.0469 11-Nov-07 10:00:00 PM 108.52344 11-Nov-07 8:40:00 PM 268.2813 11-Nov-07 8:40:00 PM 110.2344 11-Nov-07 8:40:00 PM 253.0469 11 -Nov-07 8:40:00 PM 108.52344 11-Nov-07 7:20:00 PM 268.8281 11-Nov-07 7:20:00 PM 109.8594 11-Nov-07 7:20:00 PM 252.9688 11-Nov-07 7:20:00 PM 108.52344 11 -Nov-07 6:00:00 PM 268.8281 11-Nov-07 6:00:00 PM 110.1641 11-Nov-07 6:00:00 PM 252.4219 11-Nov-07 6:00:00 PM 108.52344 11-Nov-07 4:40:00 PM 268.2813 11-Nov-07 4:40:00 PM 110.1875 11-Nov-07 4:40:00 PM 252.9688 11-Nov-07 4:40:00 PM 108.52344 11-Nov-07 3:20:00 PM 268.2813 11-Nov-07 3:20:00 PM 110.1406 11-Nov-07 3:20:00 PM 253.5156 11-Nov-07 3:20:00 PM 108.52344 11-Nov-07 2:00:00 PM 268.8281 11 -Nov-07 2:00:00 PM 110.1406 11-Nov-07 2:00:00 PM 254.4531 11-Nov-07 2:00:00 PM 108.52344 11-Nov-07 12:40:00 PM 268.2813 11-Nov-07 12:40:00 PM 110.1406 11-Nov-07 12:40:00 PM 255 11-Nov-07 12:40:00 PM 108.546875 11-Nov-07 11:20:00 AM 269.375 11-Nov-07 11:20:00 AM 110.2344 11-Nov-07 11:20:00 AM 256.6406 11-Nov-07 11:20:00 AM 108.546875 11-Nov-07 10:00:00 AM 268.8281 11-Nov-07 10:00:00 AM 110.1641 11-Nov-07 10:00:00 AM 256.0938 11-Nov-07 10:00:00 AM 108.546875 11-Nov-07 8:40:00 AM 268.8281 11-Nov-07 8:40:00 AM 110.1172 11 -Nov-07 8:40:00 AM 255 11-Nov-07 8:40:00 AM 108.546875 11-Nov-07 7:20:00 AM 268.2813 11-Nov-07 7:20:00 AM 110.1406 11-Nov-07 7:20:00 AM 252.2656 11-Nov-07 7:20:00 AM 108.546875 11-Nov-07 6:00:00 AM 268.2813 11 -Nov-07 6:00:00 AM 110.0469 11-Nov-07 6:00:00 AM 252.2656 11-Nov-07 6:00:00 AM 108.546875 11-Nov-07 4:40:00 AM 268.8281 11-Nov-07 4:40:00 AM 109.8828 11-Nov-07 4:40:00 AM 252.2656 11-Nov-07 4:40:00 AM 108.546875 11-Nov-07 3:20:00 AM 269.375 1 -Nov-07 3:20:00 AM 109.9766 11-Nov-07 3:20:00 AM 251.875 11-Nov-07 3:20:00 AM 108.546875 11-Nov-07 2:00:00 AM 268.8281 11-Nov-07 2:00:00 AM 110.2344 11-Nov-07 2:00:00 AM 252.4219 11-Nov-07 2:00:00 AM 108.546875 11-Nov-07 12:40:00 AM 269.9219 11-Nov-07 12:40:00 AM 110.5391 11-Nov-07 12:40:00 AM 252.8125 11-Nov-07 12:40:00 AM 108.546875 Page 1 of 13

Calculation PBNP-994-21-02 Rev. 0 Attachment 8.3 Unit I T-127 Unit I - T-145 Unit 2 T-127 Unit 2 - T-145 Letdown temp at regen HX outlet Letdown temp at non regen HX outlet Letdown temp at regen HX outlet Letdown temp at non regen HX outlet 10-Nov-07 11:20:00 PM 267.7344 10-Nov-07 11:20:00 PM 109.5078 10-Nov-07 11:20:00 PM 254.4531 10-Nov-07 11:20:00 PM 108.546875 1O-Nov-07 10:00:00 PM 268.2813 10-Nov-07 10:00:00 PM 109.5547 10-Nov-07 10:00:00 PM 255.5469 10-Nov-07 10:00:00 PM 108.546875 10-Nov-07 8:40:00 PM 269.375 10-Nov-07 8:40:00 PM 110.0703 10-Nov-07 8:40:00 PM 255.5469 10-Nov-07 8:40:00 PM 108.546875 10-Nov-07 7:20:00 PM 269.9219 10-Nov-07 7:20:00 PM 110.1875 10-Nov-07 7:20:00 PM 257.1875 10-Nov-07 7:20:00 PM 108.546875 10-Nov-07 6:00:00 PM 269.375 10-Nov-07 6:00:00 PM 110.0469 10-Nov-07 6:00:00 PM 255 10-Nov-07 6:00:00 PM 108.546875 10-Nov-07 4:40:00 PM 269.375 10-Nov-07 4:40:00 PM 110.1172 10-Nov-07 4:40:00 PM 254.4531 10-Nov-07 4:40:00 PM 108.57031 10-Nov-07 3:20:00 PM 269.7656 10-Nov-07 3:20:00 PM 110 10-Nov-07 3:20:00 PM 253.9063 10-Nov-07 3:20:00 PM 108.57031 10-Nov-07 2:00:00 PM 269.7656 1O-Nov-07 2:00:00 PM 110.0938 10-Nov-07 2:00:00 PM 254.4531 10-Nov-07 2:00:00 PM 108.57031 10-Nov-07 12:40:00 PM 269.2188 10-Nov-07 12:40:00 PM 110.1641 10-Nov-07 12:40:00 PM 251.7188 10-Nov-07 12:40:00 PM 108.57031 I0-Nov-07 11:20:00AM 268.125 10-Nov-07 11:20:00 AM 110.0938 10-Nov-07 11:20:00 AM 255.2344 10-Nov-07 11:20:00 AM 108.57031 f.0:No-07 10W0:00AM 268.16719.. 10-Ndv-07. 0*000 AM 1.10.0703 .. -i-GNv:07 -10,060AM-2562.32 .....

-0:fNo%7- 030 108. 57031 . ..

10-Nov-07 8:40:00 AM 267.9688 10-Nov-07 8:40:00 AM 110.0938 10-Nov-07 8:40:00 AM 255.7813 10-Nov-07 8:40:00 AM 108.57031 10-Nov-07 7:20:00 AM 269.0625 10-Nov-07 7:20:00 AM 110 10-Nov-07 7:20:00 AM 254.6875 10-Nov-07 7:20:00 AM 108.57031 10-Nov-07 6:00:00AM 269.0625 10-Nov-07 6:00:00 AM 110.0703 10-Nov-07 6:00:00 AM 254.1406 10-Nov-07 6:00:00AM 108.57031 10-Nov-07 4:40:00AM 269.0625 10-Nov-07 4:40:00AM 110.1172 10-Nov-07 4:40:00AM 252.5 10-Nov-07 4:40:00AM 108.57031 10-Nov-07 3:20:00 AM 269.0625 10-Nov-07 3:20:00 AM 110.1875 10-Nov-07 3:20:00 AM 251.9531 10-Nov-07 3:20:00 AM 108.57031 10-Nov-07 2:00:00 AM 269.0625 10-Nov-07 2:00:00 AM 110.0703 10-Nov-07 2:00:00 AM 251.9531 10-Nov-07 2:00:00 AM 108.57031 10-Nov-07 12:40:00AM 269.0625 10-Nov-07 12:40:00AM 110.1172 10-Nov-07 12:40:00AM 252.5 10-Nov-07 12:40:00AM 108.57031 9-Nov-07 11:20:00 PM 269.2188 9-Nov-07 11:20:00 PM 110.1641 9-Nov-07 11:20:00 PM 253.0469 9-Nov-07 11:20:00 PM 108.57031 9-Nov-07 10:00:00 PM 269.0625 9-Nov-07 10:00:00 PM 110.0938 9-Nov-07 10:00:00 PM 254.1406 9-Nov-07 10:00:00 PM 108.57031 9-Nov-07 8:40:00 PM 268.9063 9-Nov-07 8:40:00 PM 110.1641 9-Nov-07 8:40:00 PM 255.7813 9-Nov-07 8:40:00 PM 108.57031 9-Nov-07 7:20:00 PM 268.9063 9-Nov-07 7:20:00 PM 110.1172 9-Nov-07 7:20:00 PM 256.0156 9-Nov-07 7:20:00PM 108.59375 9-Nov-07 6:00:00 PM 268.9063 9-Nov-07 6:00:00 PM 110.0703 9-Nov-07 6:00:00 PM 264.1406 9-Nov-07 6:00:00 PM 108.59375 9-Nov-07 4:40:00 PM 270.4688 9-Nov-07 4:40:00 PM 110.2344 9-Nov-07 4:40:00 PM 254.375 9-Nov-07 4:40:00 PM 108.59375 9-Nov-07 3:20:00 PM 268.8281 9-Nov-07 3:20:00 PM 110.4453 9-Nov-07 3:20:00 PM 252.7344 9-Nov-07 3:20:00 PM 108.59375 9-Nov-07 2:00:00 PM 266.6406 9-Nov-07 2:00:00 PM 109.8828 9-Nov-07 2:00:00 PM 252.7344 9-Nov-07 2:00:00 PM 108.59375 9-Nov-07 12:40:00PM 267.7344 9-Nov-07 12:40:00 PM 110.0703 9-Nov-07 12:40:00PM 252.1875 9-Nov-07 12:40:00 PM 108.59375 9-Nov-07 11:20:00AM 267.7344 9-Nov-07 11:20:00 AM 110.0938 9-Nov-07 11:20:00 AM 252.7344 9-Nov-07 11:20:00 AM 108.59375 9-Nov-07 10:00:00AM 267.7344 9-Nov-07 10:00:00 AM 110.2344 9-Nov-07 10:00:00 AM 251.0938 9-Nov-07 10:00:00 AM 108.59375 9-Nov-07 8:40:00 AM 267.1875 9-Nov-07 8:40:00 AM 110.1406 9-Nov-07 8:40:00 AM 253.2813 9-Nov-07 8:40:00 AM 108.59375 9-Nov-07 7:20:00 AM 267.7344 9-Nov-07 7:20:00 AM 110.0938 9-Nov-07 7:20:00 AM 254.6094 9-Nov-07 7:20:00 AM 108.59375 9-Nov-07 6:00:00 AM 268.2813 9-Nov-07 6:00:00 AM 110.0938 9-Nov-07 6:00:00 AM 253.9644 9-Nov-07 6:00:00 AM 108.59375 9-Nov-07 4:40:00 AM 268.8281 9-Nov-07 4:40:00 AM 110.0703 9-Nov-07 4:40:00 AM 252.8906 9-Nov-07 4:40:00 AM 108.59375 9-Nov-07 3:20:00 AM 268.8281 9-Nov-07 3:20:00 AM 110.0703 9-Nov-07 3:20:00 AM 253.4375 9-Nov-07 3:20:00AM 108.59375 9-Nov-07 2:00:00 AM 268.2813 9-Nov-07 2:00:00 AM 110.2109 9-Nov-07 2:00:00 AM 253.6719 9-Nov-07 2:00:00 AM 108.59375 9-Nov-07 12:40:00 AM 268.2813 9-Nov-07 12:40:00 AM 110.1406 9-Nov-07 12:40:00 AM 254.2188 9-Nov-07 12:40:00 AM 108.59375 8-Nov-07 11:20:00 PM 267.9688 8-Nov-07 11:20:00 PM 110.1875 ,8-Nov-07 11:20:00 PM 255 8-Nov-07 11:20:00 PM 108.59375 8-Nov-07 10:00:00PM 267.7344 8-Nov-07 10:00:00PM 110.1172 8-Nov-07 10:00:00PM 255.3125 8-Nov-07 10:00:00PM 108.59375 8-Nov-07 8:40:00 PM 267.1875 8-Nov-07 8:40:00 PM 110.1172 8-Nov-07 8:40:00 PM 256.6406 8-Nov-07 8:40:00 PM 108.59375 8-Nov-07 7:20:00 PM 267.7344 8-Nov-07 7:20:00 PM 109.8594 8-Nov-07 7:20:00 PM 256.6406 8-Nov-07 7:20:00 PM 108.59375 8-Nov-07 6:00:00 PM 267.7344 8-Nov-07 6:00:00 PM 109.9297 8-Nov-07 6:00:00 PM 255.8594 8-Nov-07 . 6:00:00 PM 108.59375 8-Nov-07 4:40:00 PM 268.5156 8-Nov-07 4:40:00 PM 110.1172 8-Nov-07 4:40:00 PM 254.7656 8-Nov-07 4:40:00 PM 108.59375 8-Nov-07 3:20:00 PM 268.5156 8-Nov-07 3:20:00 PM 110.0938 8-Nov-07 3:20:00 PM 252.0313 8-Nov-07 3:20:00 PM 108.61719 8-Nov-07 2:00:00 PM 268.2031 8-Nov-07 2:00:00 PM 110.1875 8-Nov-07 2:00:00 PM 254.1406 8-Nov-07 2:00:00 PM 108.61719 8-Nov-07 12:40:00 PM 267.1094 8-Nov-07 12:40:00 PM 110.1875 8-Nov-07 12:40:00 PM 254.6094 8-Nov-07 12:40:00 PM 108.61719 8-Nov-07 11:20:00 AM 267.1094 8-Nov-07 11:20:00 AM 110.0938 8-Nov-07 11:20:00 AM 254.7656 8-Nov-07 11:20:00 AM 108.61719 8-Nov-07 10:00:00AM 267.1094 8-Nov-07 10:00:00AM 110.0703 8-Nov-07 10:00:00AM 256.4063 8-Nov-07 10:00:00AM 108.61719 8-Nov-07 8:40:00 AM 267.1094 8-Nov-07 8:40:00 AM 110.0938 8-Nov-07 8:40:00AM 256.7969 8-Nov-07 8:40:00 AM 108.61719 8-Nov-07 7:20:00 AM 267.4219 8-Nov-07 7:20:00 AM 110.0469 8-Nov-07 7:20:00 AM 256.25. 8-Nov-07 7:20:00AM 108.61719 Page 2 of 13

Calculation PBNP-994-21-02 Rev. 0 Attachment 8.3 Unit I T-127 Unit I - T-145 Unit 2 T-127 Unit 2 - T-145 Letdown temp at regen HX outlet Letdown temp at non regen HX outlet Letdown temp at regen HX outlet Letdown temp at non regen HX outlet 8-Nov-07 6:00:00 AM 267.5781 8-Nov-07 6:00:00 AM 110.2813 8-Nov-07 6:00:00 AM 256.25 8-Nov-07 6:00:00 AM 108.61719 8-Nov-07 4:40:00 AM 267.0313 8-Nov-07 4:40:00 AM 110.1406 8-Nov-07 4:40:00 AM 252.4219 8-Nov-07 4:40:00 AM 108.61719 8-Nov-07 3:20:00 AM 267.5781 8-Nov-07 3:20:00 AM 110.1406 8-Nov-07 3:20:00 AM 255.1563 8-Nov-07 3:20:00 AM 108.61719 8-Nov-07 2:00:00 AM 267.5781 8-Nov-07 2:00:00 AM 110.1875 8-Nov-07 2:00:00 AM 250.7813 8-Nov-07 2:00:00 AM 108.61719 8-Nov-07 12:40:00 AM 267.9688 8-Nov-07 12:40:00 AM 110.1172 8-Nov-07 12:40:00 AM 251.3281 8-Nov-07 12:40:00 AM 108.61719 7-Nov-07 11:20:00 PM 267.3438 7-Nov-07 11:20:00 PM 110.0469 7-Nov-07 11:20:00 PM 252.4219 7-Nov-07 11:20:00 PM 108.61719 7-Nov-07 10:00:00 PM 268.125 7-Nov-07 10:00:00 PM 110.0469 7-Nov-07 10:00:00 PM 253.0469 7-Nov-07 10:00:00 PM 108.61719 7-Nov-07 8:40:00 PM 268.125 7-Nov-07 8:40:00 PM 110.1172 7-Nov-07 8:40:00 PM 253.5938 7-Nov-07 8:40:00 PM 108.61719 7-Nov-07 7:20:00 PM 268.125 7-Nov-07 7:20:00 PM 110.0234 7-Nov-07 7:20:00 PM 254.8438 7-Nov-07 7:20:00 PM 108.61719 7-Nov-07 6:00:00 PM 268.4375 7-Nov-07 6:00:00 PM 110.2813 7-Nov-07 6:00:00 PM 254.6875 7-Nov-07 6:00:00 PM 108.61719 7-Nov-07

.- "7-Novw07 4:40:00 PM- 254:1406- - 4:40:00PM- 108.61719 .7mNov-07 7-Nov-07 4:40:00-PM -267.8906 7-Nov=07 4:40:00 PM- -110.2578 3:20:00 PM 267.8906 7-Nov-07 3:20:00 PM 110.1172 7-Nov-07 3:20:00 PM 253.9063 7-Nov-07 3:20:00 PM 108.61719 7-Nov-07 2:00:00 PM 267.3438 7-Nov-07 2:00:00.PM 110.1875 7-Nov-07 2:00:00 PM 253.3594 7-Nov-07 2:00:00 PM 108.61719 7-Nov-07 12:40:00 PM 267.3438 7-Nov-07 12:40:00 PM 110.2344 7-Nov-07 12:40:00 PM 253.3594 7-Nov-07 12:40:00 PM 108.61719 7-Nov-07 11:20:00 AM 267.8906 7-Nov-07 11:20:00 AM 110.1641 7-Nov-07 11:20:00 AM 253.4375 7-Nov-07 11:20:00 AM 108.61719 7-Nov-07 10:00:00 AM 267.3438 7-Nov-07 10:00:00 AM 110.0469 7-Nov-07 10:00:00 AM 254.2188 7-Nov-07 10:00:00 AM 108.61719 7-Nov-07 8:40:00 AM 267.8906 7-Nov-07 8:40:00 AM 110.0469 7-Nov-07 8:40:00 AM 254.7656 7-Nov-07 8:40:00 AM 108.61719 7-Nov-07 7:20:00 AM 267.4219 7-Nov-07 7:20:00 AM 110.0469 7-Nov-07 7:20:00 AM 254.4531 7-Nov-07 7:20:00 AM 108.61719 7-Nov-07 6:00:00 AM 267.9688 7-Nov-07 6:00:00 AM 110.0703 7-Nov-07 6:00:00 AM 254.4531 7-Nov-07 6:00:00 AM 108.61719 7-Nov-07 4:40:00 AM 268.5156 7-Nov-07 4:40:00 AM 110.0938 7-Nov-07 4:40:00 AM 254.4531 7-Nov-07 4:40:00 AM 108.61719 7-Nov-07 3:20:00 AM 267.4219 7-Nov-07 3:20:00 AM 110.1406 7-Nov-07 3:20:00 AM 252.8125 7-Nov-07 3:20:00 AM 108.61719 7-Nov-07 2:00:00 AM 267.9688 7-Nov-07 2:00:00 AM 110.2109 7-Nov-07 2:00:00 AM 251.7188 7-Nov-07 2:00:00 AM 108.61719 7-Nov-07 12:40:00 AM 268.5156 7-Nov-07 12:40:00 AM 110.0469 7-Nov-07 12:40:00 AM 251.0938 7-Nov-07 12:40:00 AM 108.61719 6-Nov-07 11:20:00 PM 267.9688 6-Nov-07 11:20:00 PM 110.1172 6-Nov-07 11:20:00 PM 251.0156 6-Nov-07 11:20:00 PM 108.61719 6-Nov-07 10:00:00 PM 268.5156 6-Nov-07 10:00:00 PM 110.1875 6-Nov-07 10:00:00 PM 251.5625 6-Nov-07 10:00:00 PM 108.61719 6-Nov-07 8:40:00 PM 269.6094 6-Nov-07 8:40:00 PM 110.3984 6-Nov-07 8:40:00 PM 251.4844 6-Nov-07 8:40:00 PM 108.640625 6-Nov-07 7:20:00 PM 268.5156 6-Nov-07 7:20:00 PM 110.4922 6-Nov-07 7:20:00 PM 252.0313 6-Nov-07 7:20:00 PM 108.640625 6-Nov-07 6:00:00 PM 267.9688 6-Nov-07 6:00:00 PM 110.2109 6-Nov-07 6:00:00 PM 252.5781 6-Nov-07 6:00:00 PM 108.640625 6-Nov-07 4:40:00 PM 267,4219 6-Nov-07 4:40:00 PM 109.9063 6-Nov-07 4:40:00 PM 254.2188 6-Nov-07 4:40:00 PM 108.640625 6-Nov-07 3:20:00 PM 266.3281 6-Nov-07 3:20:00 PM 110.0938 6-Nov-07 3:20:00 PM 255.3125 6-Nov-07 3:20:00 PM 108.640625 6-Nov-07 2:00:00 PM 268.5156 6-Nov-07 2:00:00 PM 109.9766 6-Nov-07 2:00:00 PM 255.3125 6-Nov-07 2:00:00 PM 108.640625 6-Nov-07 12:40:00 PM 269.0625 6-Nov-07 12:40:00 PM 110.0469 6-Nov-07 12:40:00 PM 254.2188 6-Nov-07 12:40:00 PM 108.640625 6-Nov-07 11:20:00 AM 268.5938 6-Nov-07 11:20:00 AM 110.1875 6-Nov-07 11:20:00 AM 254.2188 6-Nov-07 11:20:00 AM 108.640625 6-Nov-07 10:00:00 AM 268.0469 6-Nov-07 10:00:00 AM 110.1875 6-Nov-07 10:00:00 AM 253.6719 6-Nov-07 10:00:00 AM 108.640625 6-Nov-07 8:40:00 AM 267.5 6-Nov-07 8:40:00 AM 110.1172 6-Nov-07 8:40:00 AM 254.2188 6-Nov-07 8:40:00 AM 108.640625 6-Nov-07 7:20:00 AM 267.5 6-Nov-07 7:20:00 AM 110.0938 6-Nov-07 7:20:00 AM 254.6094 6-Nov-07 7:20:00 AM 108.640625 6-Nov-07 6:00:00 AM 268.0469 6-Nov-07 6:00:00 AM 110.0703 6-Nov-07 6:00:00 AM 255.1563 6-Nov-07 6:00:00 AM 108.640625 6-Nov-07 4:40:00 AM 268.5938 6-Nov-07 4:40:00 AM 109.9766 6-Nov-07 4:40:00 AM 256.3281 6-Nov-07 4:40:00 AM 108.640625 6-Nov-07 3:20:00 AM 267.5 6-Nov-07 3:20:00 AM 109.9766 6-Nov-07 3:20:00 AM 255.2344 6-Nov-07 3:20:00 AM 108.640625 6-Nov-07 2:00:00 AM 268.0469 6-Nov-07 2:00:00 AM 113.5859 6-Nov-07 2:00:00 AM 254.1406 6-Nov-07 2:00:00 AM 108.640625 5-Nov-07 12:40:00 AM 268.0469 6-Nov-07 12:40:00 AM 110.1641 6-Nov-07 12:40:00 AM 254.6094 6-Nov-07 12:40:00 AM 108.640625 5-Nov-07 11:20:00 PM 268.2813 5-Nov-07 11:20:00 PM 110.2109 5-Nov-07 11:20:00 PM 254.6875 5-Nov-07 11:20:00 PM 108.640625 5-Nov-07 10:00:00 PM 267.7344 5-Nov-07 10:00:00 PM 110.2344 5-Nov-07 10:00:00 PM 255.3125 S-Nov-07 10:00:00 PM 108.640625 5-Nov-07 8:40:00 PM 267.1875 5-Nov-07 8:40:00 PM 110.1875 5-Nov-07 8:40:00 PM 255.625 5-Nov-07 8:40:00 PM 108.640625 5-Nov-07 7:20:00 PM 266.6406 5-Nov-07 7:20:00 PM 110.0938 5-Nov-07 7:20:00 PM 256.1719 5-Nov-07 7:20:00 PM 108.640625 5-Nov-07 6:00:00 PM 267.1875 5-Nov-07 6:00:00 PM 110.1172 5-Nov-07 6:00:00 PM 256.1719 5-Nov-07 6:00:00 PM 108.640625 5-Nov-07 4:40:00 PM 267.1875 5-Nov-07 4:40:00 PM 110.0703 5-Nov-07 4:40:00 PM 256.1719 5-Nov-07 4:40:00 PM 108.640625 5-Nov-07 3:20:00 PM 267.4219 5-Nov-07 3:20:00 PM 110.1406 5-Nov-07 3:20:00 PM 255.625 5-Nov-07 3:20:00 PM 108.640625 5-Nov-07 2:00:00 PM 266.9531 5-Nov-07 2:00:00 PM 110,2813 5-Nov-07 2:00:00 PM 253.9844 5-Nov-07 2:00:00 PM 108.640625 Page 3 of 13

Calculation PBNP-994-21-02 Rev. 0 Attachment 8.3 Unit I T-127 Unit 1 T-145 Unit 2 T.127 Unit 2 - T-145 Letdown temp at regen HX outlet Letdown temp at non regen HX outlet Letdown temp at regen HX outlet Letdown temp at non regen HX outlet 5-Nov-07 12:40:00 PM 266.4063 5-Nov-07 12:40:00 PM 110.0703 5-Nov-07 12:40:00 PM 252.8906 5-Nov-07 12:40:00 PM 108.640625 5-Nov-07 11:20:00 AM 266.9531 5-Nov-07 11:20:00 AM 110.1406 5-Nov-07 11:20:00 AM 252.5781 5-Nov-07 11:20:00 AM 108.640625 5-Nov-07 10:00:00 AM 266.9531 5-Nov-07 10:00:00 AM 110,0938 5-Nov-07 10:00:00 AM 253.125 5-Nov-07 10:00:00 AM 108.640625 5-Nov-07 8:40:00 AM 266.4063 5-Nov-07 8:40:00 AM 109,9297 5-Nov-07 8:40:00 AM 252.5781 5-Nov-07 8:40:00 AM 108.640625 5-Nov-07 7:20:00 AM 267.5 5-Nov-07 7:20:00 AM 110,1641 5-Nov-07 7:20:00 AM 253.6719 5-Nov-07 7:20:00 AM 108.640625 5-Nov-07 6:00:00 AM 266.9531 5-Nov-07 6:00:00 AM 110,1172 5-Nov-07 6:00:00 AM 254.2188 5-Nov-07 6:00:00 AM 108.640625 5-Nov-07 4:40:00 AM 266.9531 5-Nov-07 4:40:00 AM 110.2813 5-Nov-07 4:40:00 AM 255.3125 5-Nov-07 4:40:00 AM 108.640625 5-Nov-07 3:20:00 AM 266.9531 5-Nov-07 3:20:00 AM 110,0469 5-Nov-07 3:20:00 AM 255,3125 5-Nov-07 3:20:00 AM 108.640625 5-Nov-07 2:00:00 AM 266.9531 5-Nov-07 2:00:00 AM 110,1406 5-Nov-07 2:00:00 AM 254.2188 5-Nov-07 2:00:00 AM 108.640625 5-No,-07 12:40:00 AM 267.2656 5-Nov-07 12:40:00 AM 109W9766 5-Nov-07 12:40:00 AM 253.6719 5-Nov-07 12:40:00 AM 108.66406 4-TNbv-07 11:20:00 PM 267.0313 4-Nov-07 11:20:00 PM 110T0703 4-Nov-07 1-12000 PM 253.0469 4-NoW I 1:70:00PM '108.66406-4-Nov-07 10:00:00 PM 266.9531 4-Nov-07 10:00:00 PM 110.0938 4-Nov-07 10:00:00 PM 253.3594 4-Nov-07 10:00:00 PM 108.66406 4-Nov-07 8:40:00 PM 266.9531 4-Nov-07 8:40:00 PM 110.2344 4-Nov-07 8:40:00 PM 253.9063 4-Nov-07 8!40:00 PM 108.66406 4-Nov-07 7:20:00 PM 266.9531 4-Nov-07 7:20:00 PM 110,0469 4-Nov-07 7:20:00 PM 254.4531 4-Nov-07 7:20:00 PM 108.66406 4-Nov-07 6:00:00 PM 266.9531 4-Nov-07 6:00:00 PM 110.1641 4-Nov-07 6:00:00 PM 254.1406 4-Nov-07 6:00:00 PM 108.66406 4-Nov-07 4:40:00 PM 267.5 4-Nov-07 4:40:00 PM 110 4-Nov-07 4:40:00 PM 254.6875 4-Nov-07 4:40:00 PM 108.66406 4-Nov-07 3:20:00 PM 267.5 4-Nov-07 3:20:00 PM 110.0234 4-Nov-07 3:20:00 PM 255.3906 4-Nov-07 3:20:00 PM 108.66406 4-Nov-07 2:00:00 PM 267.5 4-Nov-07 2:00:00 PM 110.0938 4-Nov-07 2:00:00 PM 255.9375 4-Nov-07 2:00:00 PM 108.66406 4-Nov-07 12:40:00 PM 267.5 4-Nov-07 12:40:00 PM 110,0469 4-Nov-07 12:40:00 PM 255.3906 4-Nov-07 12:40:00 PM 108.66406 4-Nov-07 11:20:00 AM 267.5 4-Nov-07 11:20:00 AM 109,9766 4-Nov-07 11:20:00 AM 255.3906 4-Nov-07 11:20:00 AM 108.66406 4-Nov-07 10:00:00 AM 268.0469 4-Nov-07 10:00:00 AM 110,0938 4-Nov-07 10:00:00 AM 255.3906 4-Nov-07 10:00:00 AM 108.66406 4-Nov-07 8:40:00 AM 267.7344 4-Nov-07 8:40:00 AM 110.1641 4-Nov-07 8:40:00 AM 253.9844 4-Nov-07 8:40:00 AM 108.66406 4-Nov-07 7:20:00 AM 267.8906 4-Nov-07 7:20:00 AM 110,0938 4-Nov-07 7:20:00 AM 253.9844 4-Nov-07 7:20:00 AM 108.66406 4-Nov-07 6:00:00 AM 267.8906 4-Nov-07 6:00:00 AM 110,1875 4-Nov-07 6:00:00 AM 253.9844 4-Nov-07 6:00:00 AM 108.66406 4-Nov-07 4:40:00 AM 267.3438 4-Nov-07 4:40:00 AM 11012344 4-Nov-07 4:40:00 AM 253.9844 4-Nov-07 4:40:00 AM 108,66406 4-Nov-07 3:20:00 AM 267.8906 4-Nov-07 3:20:00 AM 110,0703 4-Nov-07 3:20:00 AM 254.2188 4-Nov-07 3:20:00 AM 108.66406 4-Nov-07 2:00:00 AM 267.2656 4-Nov-07 2:00:00 AM 110.0469 4-Nov-07 2:00:00 AM 254.2188 4-Nov-07 2:00:00 AM 108.66406 4-Nov-07 12:40:00 AM 267.8125 4-Nov-07 12:40:00 AM 110.0469 4-Nov-07 12:40:00 AM 254.6875 4-Nov-07 12:40:00 AM 108.66406 3-Nov-07 11:20:00 PM 267.2656 3-Nov-07 11:20:00 PM 109.9297 3-Nov-07 11:20:00 PM 254.6875 3-Nov-07 11:20:00 PM 108.66406 3-Nov-07 10:00:00 PM 268.0469 3-Nov-07 10:00:00 PM 110.1172 3-Nov-07 10:00:00 PM 255.5469 3-Nov-07 10:00:00 PM 108.66406 3-Nov-07 8:40:00 PM 267,8125 3-Nov-07 8:40:00 PM 110,1406 3-Nov-07 8:40:00 PM 255 3-Nov-07 8:40:00 PM 108.66406 3-Nov-07 7:20:00 PM 267.8125 3-Nov-07 7:20:00 PM 110.0938 3-Nov-07 7:20:00 PM 256.0938 3-Nov-07 7:20:00 PM 108.66406 3-Nov-07 6:00:00 PM 267.2656 3-Nov-07 6:00:00 PM 10919063 3-Nov-07 6:00:00 PM 254.7656 3-Nov-07 6:00:00 PM 108.66406 3-Nov-07 4:40:00 PM 267.8125 3-Nov-07 4:40:00 PM 109,9063 3-Nov-07 4:40:00 PM 254.2188 3-Nov-07 4:40:00 PM 108.66406 3-Nov-07 3:20:00 PM 267.9688 3-Nov-07 3:20:00 PM 109,9766 3-Nov-07 3:20:00 PM 253.6719 3-Nov-07 3:20:00 PM 108.66406 3-Nov-07 2:00:00 PM 267.5781 3-Nov-07 2:00:00 PM 109.9766 3-Nov-07 2:00:00 PM 253.2813 3-Nov-07 2:00:00 PM 108.66406 3-Nov-07 12:40:00 PM 268.125 3-Nov-07 12:40:00 PM 110,1641 3-Nov-07 12:40:00 PM 252.7344 3-Nov-07 12:40:00 PM 108.66406 3-Nov-07 11:20:00 AM 267.5781 3-Nov-07 11:20:00 AM 110.0234 3-Nov-07 11:20:00 AM 252.7344 3-Nov-07 11:20:00 AM 108.66406 3-Nov-07 10:00:00 AM 265.9375 3-Nov-07 10:00:00 AM 109.8359 3-Nov-07 10:00:00 AM 253.6719 3-Nov-07 10:00:00 AM 108.66406 3-Nov-07 8:40:00 AM 266.4844 3-Nov-07 8:40:00 AM 110,2109 3-Nov-07 8:40:00 AM 254.1406 3-Nov-07 8:40:00 AM 108.66406 3-Nov-07 7:20:00 AM 266.4844 3-Nov-07 7:20:00 AM 110,0938 3-Nov-07 7:20:00 AM 255.2344 3-Nov-07 7:20:00 AM 108.66406 3-Nov-07 6:00:00 AM 267.5781 3-Nov-07 6:00:00 AM 110,0938 3-Nov-07 6:00:00 AM 255.7813 3-Nov-07 6:00:00 AM 108.66406 3-Nov-07 4:40:00 AM 267.5781 3-Nov-07 4:40:00 AM 110,0703 3-Nov-07 4:40:00 AM 256.3281 3-Nov-07 4:40:00 AM 108.66406 3-Nov-07 3:20:00 AM 266.4844 3-Nov-07 3:20:00 AM 110.0469 3-Nov-07 3:20:00 AM 254.1406 3-Nov-07 3:20:00 AM 108.66406 3-Nov-07 2:00:00 AM 267.0313 3-Nov-07 2:00:00 AM 110,0469 3-Nov-07 2:00:00 AM 254.1406 3-Nov-07 2:00:00 AM 108.66406 3-Nov-07 12:40:00 AM 265.9375 3-Nov-07 12:40:00 AM 110,0703 3-Nov-07 12:40:00 AM 262.6563 3-Nov-07 12:40:00 AM 108.66406 2-Nov-07 11:20:00 PM 267.0313 2-Nov-07 11:20:00 PM 110.2578 2-Nov-07 11:20:00 PM 263.2031 2-Nov-07 11:20:00 PM 108.66406 2-Nov-07 10:00:00 PM 268.125 2-Nov-07 10:00:00 PM 110,3281 2-Nov-07 10:00:00 PM 264.8438 2-Nov-07 10:00:00 PM 108.66406 2-Nov-07 8:40:00 PM 265.9375 2-Nov-07 8:40:00 PM 110.375 2-Nov-07 8:40:00 PM 265.9375 2-Nov-07 8:40:00 PM 108.66406 Page 4 of 13

Calculation PBNP-994-21-02 Rev. 0 Attachment 8.3 Unit I T-127 Unit I - T-145 Unit 2 T-127 Unit 2 - T-145 Letdown tamp at regen HX outlet Letdown tamp at non regen HX outlet Letdown tamp at regen HX outlet Letdown tamp at non regen HX outlet 2-Nov-07 7:20:00 PM 267.3438 2-Nov-07 7:20:00 PM 108.3125 2-Nov-07 7:20:00 PM 265.3906 2-Nov-07 7:20:00 PM 108.66406 2-Nov-07 6:00:00 PM 264.6875 2-Nov-07 6:00:00 PM 110.0469 2-Nov-07 6:00:00 PM 265.3906 2-Nov-07 6:00:00 PM 108.66406 2-Nov-07 4:40:00 PM 265 2-Nov-07 4:40:00 PM 109.8359 2-Nov-07 4:40:00 PM 265.3906 2-Nov-07 4:40:00 PM 108.66406 2-Nov-07 3:20:00 PM 264.5313 2-Nov-07 3:20:00 PM 110.1406 2-Nov-07 3:20:00 PM 264.8438 2-Nov-07 3:20:00 PM 108.66406 2-Nov-07 2:00:00 PM 265.0781 2-Nov-07 2:00:00 PM 110.1406 2-Nov-07 2:00:00 PM 265.4688 2-Nov-07 2:00:00 PM 108.66406 2-Nov-07 12:40:00 PM 263.9844 2-Nov-07 12:40:00 PM 110.1641 2-Nov-07 12:40:00 PM 264.9219 2-Nov-07 12:40:00 PM 108.66406 2-Nov-07 11:20:00 AM 264.5313 2-Nov-07 11:20:00 AM 109.6484 2-Nov-07 11:20:00 AM 265.5469 2-Nov-07 11:20:00 AM 108.66406 2-Nov-07 10:00:00 AM 264.9219 2-Nov-07 10:00:00 AM 110.2344 2-Nov-07 10:00:00 AM 263.9063 2-Nov-07 10:00:00 AM 108.66406 2-Nov-07 8:40:00 AM 263.8281 2-Nov-07 8:40:00 AM 110.1172 2-Nov-07 8:40:00 AM 262.8125 2-Nov-07 8:40:00 AM 108.66406 2-Nov-07 7:20:00 AM 264.375 2-Nov-07 7:20:00 AM 110.0938 2-Nov-07 7:20:00 AM 262.2656 2-Nov-07 7:20:00 AM 108.66406 2-Nov 6:00:00-AM - 264.375 2-Nov 6:00:00-AM- 110.1641-- Nov-07 '6:00:00AM 261:1719 . 2:Nový07- -6'.00:00 AM 108.66406 2-Nov-07 4:40:00 AM 263.8281 2-Nov-07 4:40:00 AM 110.1875 2-Nov-07 4:40:00 AM 261.1719 2-Nov-07 4:40:00 AM 108.66406 2-Nov-07 3:20:00 AM 263.8281 2-Nov-07 3:20:00 AM 110.1875 2-Nov-07 3:20:00 AM 261.25 2-Nov-07 3:20:00 AM 108.66406 2-Nov-07 2:00:00 AM 263.8281 2-Nov-07 2:00:00 AM 110.0703 2-Nov-07 2:00:00 AM 262.8906 2-Nov-07 2:00:00 AM 108.66406 2-Nov-07 12:40:00 AM 264.375 2-Nov-07 12:40:00 AM 110.0703 2-Nov-07 12:40:00 AM 263.9844 2-Nov-07 12:40:00 AM 108.66406 1-Nov-07 11:20:00 PM 264.2969 1-Nov-07 11:20:00 PM 110.3516 1-Nov-07 11:20:00 PM 264.0625 1-Nov-07 11 :20:00 PM 108.66406 1-Nov-07 10:00:00 PM 264.1406 1-Nov-07 10:00:00 PM 110.0234 1-Nov-07 10:00:00 PM 263.9844 1-Nov-07 10:00:00 PM 108.66406 1-Nov-07 8:40:00 PM 264.6875 1-Nov-07 8:40:00 PM 110 1-Nov-07 8:40:00 PM 262.8906 1-Nov-07 8:4t0:00 PM 108.6875 1-Nov-07 7:20:00 PM 264.6094 1-Nov-07 7:20:00 PM 110.1641 1-Nov-07 7:20:00 PM 262.0313 1-Nov-07 7:20:00 PM 108.6875 1-Nov-07 6:00:00 PM 265.1563 1-Nov-07 6:00:00 PM 109.7656 1-Nov-07 6:00:00 PM 260.9375 1-Nov-07 6:00:00 PM 108.6875 1-Nov-07 4:40:00 PM 265.7031 1-Nov-07 4:40:00 PM 110.2813 1-Nov-07 4:40:00 PM 260.9375 1-Nov-07 4:40:00 PM 108.6675 1-Nov-07 3:20:00 PM 265.1563 1-Nov-07 3:20:00 PM 110.2344 1-Nov-07 3:20:00 PM 260.9375 1-Nov-07 3:20:00 PM 108.6875 1-Nov-07 2:00:00 PM 262.9688 1-Nov-07 2:00:00 PM 109.7656 1-Nov-07 2:00:00 PM 261.4844 1-Nov-07 2:00:00 PM 108.6875 1-Nov-07 12:40:00 PM 265.1563 1-Nov-07 12:40:00 PM 109.9063 1-Nov-07 12:40:00 PM 261.7969 1-Nov-07 12:40:00 PM 108.6875 1-Nov-07 11:20:00 AM 265.4688 1-Nov-07 11:20:00 AM 110.2109 1-Nov-07 11:20:00 AM 262.3438 1-Nov-07 11:20:00 AM 108.6875 1-Nov-07 10:00:00 AM 265.5469 1-Nov-07 10:00:00 AM 110.3516 1-Nov-07 10:00:00 AM 263.9844 1-Nov-07 10:00:00 AM 108.6875 1-Nov-07 8:40:00 AM 265 1-Nov-07 8:40:00 AM 110.0703 1-Nov-07 8:40:00 AM 263.9844 1-Nov-07 8:40:00 AM 108.6875 1-Nov-07 7:20:00 AM 265.0781 1-Nov-07 7:20:00 AM 110.0234 1-Nov-07 7:20:00 AM 263.8281 1-Nov-07 7:20:00 AM 108.6875 1-Nov-07 6:00:00 AM 265 1-Nov-07 6:00:00 AM 110.0234 1-Nov-07 6:00:00 AM 262.7344 1-Nov-07 6:00:00 AM 108.6875 1-Nov-07 4:40:00 AM 265.3906 1-Nov-07 4:40:00 AM 110.1172 1-Nov-07 4:40:00 AM 263.8281 1-Nov-07 4:40:00 AM 108.6875 1-Nov-07 3:20:00 AM 265.9375 1-Nov-07 3:20:00 AM 110.2813 1-Nov-07 3:20:00 AM 263.9063 1-Nov-07 3:20:00 AM 108.6875 1-Nov-07 2:00:00 AM 265.4688 1-Nov-07 2:00:00 AM 110.3047 1-Nov-07 2:00:00 AM 262.2656 1-Nov-07 2:00:00 AM 108.6875 1-Nov-07 12:40:00 AM 264.9219 1-Nov-07 12:40:00 AM 110.2344 1-Nov-07 12:40:00 AM 262.8125 1-Nov-07 12:40:00 AM 108.6875 31-Oct-07 11:20:00 PM 264.375 31-Oct-07 11:20:00 PM 110.1406 31-Oct-07 11:20:00 PM 262.2656 31-Oct-07 11:20:00 PM 108.6875 31 -Oct-07 10:00:00 PM 264.6875 31-Oct-07 10:00:00 PM 110.0938 31-Oct-07 10:00:00 PM 262.2656 31-Oct-07 10:00:00 PM 108.6875 31-Oct-07 8:40:00 PM 265.7813 31-Oct-07 8:40:00 PM 109.6953 31-Oct-07 8:40:00 PM 261.4844 31 -Oct-07 8:40:00 PM 108.6875 31-Oct-07 7:20:00 PM 264.6875 31-Oct-07 7:20:00 PM 109.9766 31-Oct-07 7:20:00 PM 261.6406 31-Oct-07 7:20:00 PM 108.6875 31-Oct-07 6:00:00 PM 265.5469 31-Oct-07 6:00:00 PM 109.8594 31-Oct-07 6:00:00 PM 261.0938 31-Oct-07 6:00:00 PM 108.6875 31-Oct-07 4:40:00 PM 265.5469 31-Oci-07 4:40:00 PM 109.9297 31-Oct-07 4:40:00 PM 260.5469 31-Oct-07 4:40:00 PM 108.6875 31-Oct-07 3:20:00 PM 265.8594 31-Oct-07 3:20:00 PM 109.9766 31-Oct-07 3:20:00 PM 262.7344 31-Oct-07 3:20:00 PM 108.6875 31-Oct-07 2:00:00 PM 265.7813 31-Oct-07 2:00:00 PM 110.2578 31 -Oct-07 2:00:00 PM 261.6406 31-Oct-07 2:00:00 PM 108.6875 31-Oct-07 12:40:00 PM 265.2344 31-Oct-07 12:40:00 PM 110.6563 31-Oct-07 12:40:00 PM 261.7188 31-Oct-07 12:40:00 PM 108.6875 31-Oct-07 11:20:00 AM 265.7813 31-Oct-07 11:20:00 AM 110.0469 31-Oct-07 11:20:00 AM 261.6406 31-Oct-07 11:20:00 AM 108.6875 31-Oct-07 10:00:00 AM 265.2344 31-Oct-07 10:00:00 AM 110.1641 31-Oct-07 10:00:00 AM 261.3281 31-Oct-07 10:00:00 AM 108.6875 31-Oct-07 8:40:00 AM 265.2344 31-Oct-07 8:40:00 AM 110.0938 31-Oct-07 8:40:00 AM 261.3281 31-Oct-07 8:40:00 AM 108.6875 31-Oct-07 7:20:00 AM 265.8594 31-Oct-07 7:20:00 AM 110.1641 31-Oct-07 7:20:00 AM 261.6406 31-Oct-07 7:20:00 AM 108.6875 31-Oct-07 6:00:00 AM 265.8594 31-Oct-07 6:00:00 AM 110.1172 31-Oct-07 6:00:00 AM 260.5469 31-Oct-07 6:00:00 AM 108.6875 31-Oct-07 4:40:00 AM 265.8594 31-Oct-07 4:40:00 AM 110.1406 31-Oct-07 4:40:00 AM 262.7344 31-Oct-07 4:40:00 AM 108.6875 31-Oct-07 3:20:00 AM 265.7813 31-Oct-07 3:20:00 AM 109.8594 31-Oct-07 3:20:00 AM 263.8281 31-Oct-07 3:20:00 AM 108.6875 Page 5 of 13

Calculation PBNP-994-21-02 Rev. 0 Attachment 8.3 Unit I T-127 Unit I - T-145 Unit 2 T-127 Unit 2 - T-145 Letdown temp at regen HX outlet Letdown temp at non regen HX outlet Letdown temp at regen HX outlet Letdown temp at non regen HX outlet 31 -Oct-07 2:00:00 AM 266.25 31-Oct-07 2:00:00 AM 110.0234 31-Oct-07 2:00:00 AM 264.2969 31-Oct-07 2:00:00 AM 108.6875 31-Oct-07 12:40:00 AM 266.7969 31-Oct-07 12:40:00 AM 110.0469 31-Oct-07 12:40:00 AM 263.2031 31-Oct-07 12:40:00 AM 108.6875 30-Oct-07 11:20:00 PM 267.3438 30-Oct-07 11:20:00 PM 110.1172 30-Oct-07 11:20:00 PM 262.1094 30-Oct-07 11:20:00 PM 108.6875 30-Oct-07 10:00:00 PM 268.9844 30-Oct-07 10:00:00 PM 110.2813 30-Oct-07 10:00:00 PM 261.5625 30-Oct-07 10:00:00 PM 108.6875 30-Oct-07 8:40:00 PM 266.4063 30-Oct-07 8:40:00 PM 110.2813 30-Oct-07 8:40:00 PM 261.0156 30-Oct-07 8:40:00 PM 108.71094 30-Oct-07 7:20:00 PM 266,4063 30-Oct-07 7:20:00 PM 110.1641 30-Oct-07 7:20:00 PM 260.3125 30-Oct-07 7:20:00 PM 108.71094 30-Oct-07 6:00:00 PM 266.9531 30-Oct-07 6:00:00 PM 110.1641 30-Oct-07 6:00:00 PM 259.9219 30-Oct-07 6:00:00 PM 108.71094 30-Oct-07 4:40:00 PM 267.5 30-Oct-07 4:40:00 PM 110.1641 30-Oct-07 4:40:00 PM 260.4688 30-Oct-07 4:40:00 PM 108.7`1094 30-Oct-07 3:20:00 PM 267.6563 30-Oct-07 3:20:00 PM 110.1406 30-Oct-07 3:20:00 PM 261.0156 30-Oct-07 3:20:00 PM 108.71094 30-Oct-07 2:00:00 PM 267.1094 30-Oct-07 2:00:00 PM 110.2344 30-Oct-07 2:00:00 PM 262.6563 30-Oct-07 2:00:00 PM 108.71094 7

30-Oct-0 12:40:00 PM 267.2656 30-Oct-07 12:40:00 PM .. 1T1 S30:Oc(-b-0712:40O0-PM .... 263.75- 3-0-WOctO07I12!40-:0bP .10&71094-30-Oct-07 11:20:00AM 267.1875 30-Oct-07 11:20:00 AM 110.3047 30-Oct-07 11:20:00 AM 263.75 30-Oct-07 11:20:00 AM 108.71094 30-Oct-07 10:00:00 AM 266.9531 30-Oct-07 10:00:00AM 110.2109 30-Oct-07 10:00:00 AM 264.2969 30-Oct-07 10:00:00 AM 108.71094 30-Oct-07 8:40:00 AM 266.4063 30-Oct-07 8:40:00 AM 110.1406 30-Oct-07 8:40:00 AM. 263.75 30-Oct-07 8:40:00 AM 108.71094 30-Oct-07 7:20:00 AM 266.25 30-Oct-07 7:20:00 AM 110.1641 30-Oct-07 7:20:00 AM 264.375 30-Oct-07 7:20:00 AM 108.71094 30-Oct-07 6:00:00 AM 265.7031 30-Oct-07 6:00:00 AM 109.9297 30-Oct-07 6:00:00 AM 260 30-Oct-07 6:00:00 AM 108.71094 30-Oct-07 4:40:00 AM 266.25 30-Oct-07 4:40:00 AM 110.0234 30-Oct-07 4:40:00 AM 263.2813 30-Oct-07 4:40:00 AM 108.71094 30-Oct-07 3:20:00 AM 267.4219 30-Oct-07 3:20:00 AM 110.2109 30-Oct-07 3:20:00 AM 263.2813 30-Oct-07 3:20:00 AM 108.71094 30-Oct-07 2:00:00 AM 267.1875 30-Oct-07 2:00:00 AM 110.2109 30-Oct-07 2:00:00 AM 262.7344 30-Oct-07 2:00:00 AM 108.71094 30-Oct-07 12:40:00 AM 267.1875 30-Oct-07 12:40:00 AM 110.0703 30-Oct-07 12:40:00 AM 262.1875 30-Oct-07 12:40:00 AM 108.71094 29-Oct-07 11:20:00 PM 267.5781 29-Oct-07 11:20:00 PM 110.0703 29-Oct-07 11:20:00 PM 261.9531 29-Oct-07 11:20:00 PM 108.71094 29-Oct-07 10:00:00 PM 268.125 29-Oct-07 10:00:00 PM 110.0938 29-Oct-07 10:00:00 PM 261.4063 29-Oct-07 10:00:00 PM 108.71094 29-Oct-07 8:40:00 PM 268.125 29-Oct-07 8:40:00 PM 110.3281 29-Oct-07 8:40:00 PM 261.0938 29-Oct-07 8:40:00 PM 108.71094 29-Oct-07 7:20:00 PM 267.9688 29-Oct-07 7:20:00 PM 110.375 29-Oct-07 7:20:00 PM 261.6406 29-Oct-07 7:20:00 PM 108.71094 29-Oct-07 6:00:00 PM 267.1094 29-Oct-07 6:00:00 PM 110.2813 29-Oct-07 6:00:00 PM 262.7344 29-Oct-07 6:00:00 PM 108.71094 29-Oct-07 4:40:00 PM 266.5625 29-Oct-07 4:40:00 PM 110.0469 29-Oct-07 4:40:00 PM 263.2813 29-Oct-07 4:40:00 PM 108.71094 29-Oct-07 3:20:00 PM 264.9219 29-Oct-07 3:20:00 PM 110.0234 29-Oct-07 3:20:00 PM 262.7344 29-Oct-07 3:20:00 PM 108.71094 29-Oct-07 2:00:00 PM 267.3438 29-Oct-07 2:00:00 PM 110.3281 29-Oct-07 2:00:00 PM 262.1875 29-Oct-07 2:00:00 PM 108.71094 29-Oct-07 12:40:00 PM 266.7969 29-Oct-07 12:40:00 PM 110.2109 29-Oct-07 12:40:00 PM 262.1875 29-Oct-07 12:40:00 PM 108.71094 29-Oct-07 11:20:00 AM 266.875 29-Oct-07 11:20:00 AM 110.2344 29-Oct-07 11:20:00 AM 263.2031 29-Oct-07 11:20:00 AM 108.71094 29-Oct-07 10:00:00 AM 266.3281 29-Oct-07 10:00:00 AM 110.1875 29-Oct-07 10:00:00 AM 263.0469 29-Oct-07 10:00:00 AM 108.71094 29-Oct-07 8:40:00 AM 266.875 29-Oct-07 8:40:00 AM 110.0938 29-Oct-07 8:40:00 AM 261.4063 29-Oct-07 6:40:00 AM 108.71094 7

29-Oct-0 7:20:00 AM 265.7031 29-Oct-07 7:20:00 AM 109.9766 29-Oct-07 7:20:00 AM 262.6563 29-Oct-07 7:20:00 AM 108.71094 29-Oct-07 6:00:00 AM 265.7031 29-Oct-07 6:00:00 AM 110 29-Oct-07 6:00:00 AM 262.1094 29-Oct-07 6:00:00 AM 108.71094 29-Oct-07 4:40:00 AM 266.9531 29-Oct-07 4:40:00 AM 110.1641 29-Oct-07 4:40:00 AM 262.1094 29-Oct-07 4:40:00 AM 108,71094 29-Oct-07 3:20:00 AM 266.9531 29-Oct-07 3:20:00 AM 110.2109 29-Oct-07 3:20:00 AM 261.0156 29-Oct-07 3:20:00 AM 108.7`1094 29-Oct-07 2:00:00 AM 267.5 29-Oct-07 2:00:00 AM 110.1875 29-Oct-07 2:00:00AM 261.0156 29-Oct-07 2:00:00 AM 108.71094 29-Oct-07 12:40:00 AM 266.9531 29-Oct-07 12:40:00 AM 110.1875 29-Oct-07 12:40:00 AM 261.5625 29-Oct-07 12:40:00 AM 108.71094 28-Oct-07 11:20:00 PM 266.9531 28-Oct-07 11:20:00 PM 110.1641 28-Oct-07 11:20:00 PM 261.5625 28-Oct-07 11:20:00 PM 108.71094 28-Oct-07 10:00:00 PM 266.9531 28-Oct-07 10:00:00 PM 110.1406 28-Oct-07 10:00:00 PM 262.1094 28-Oct-07 10:00:00 PM 108.71094 28-Oct-07 8:40:00 PM 266.9531 28-Oct-07 8:40:00 PM 110.1406 28-Oct-07 8:40:00 PM 263.2031 28-Oct-07 8:40:00 PM 108.71094 28-Oct-07 7:20:00 PM 266.4063 28-Oct-07 7:20:00 PM 110 28-Oct-07 7:20:00 PM 263.4375 28-Oct-07 7:20:00 PM 108.734375 28-Oct-07 6:00:00 PM 266.9531 28-Oct-07 6:00:00 PM 109.8828 28-Oct-07 6:00:00 PM 264.5313 28-Oct-07 6:00:00 PM 108.734375 28-Oct-07 4:40:00 PM 267.5 28-Oct-07 4:40:00 PM 110.1406 28-Oct-07 4:40:00 PM 264.0625 28-Oct-07 4:40:00 PM 108.734375 28-Oct-07 3:20:00 PM 267.5 28-Oct-07 3:20:00 PM 110.3984 28-Oct-07 3:20:00 PM 262.9688 28-Oct-07 3:20:00 PM 108.734375 28-Oct-07 2:00:00 PM 267.5 28-Oct-07 2:00:00 PM 110.3047 28-Oct-07 2:00:00 PM 261.875 28-Oct-07 2:00:00 PM 108.734375 28-Oct-07 12:40:00 PM 266.9531 28-Oct-07 12:40:00 PM '110.1641 28-Oct-07 12:40:00 PM 261.0938 28-Oct-07 12:40:00 PM 108.734375 28-Oct-07 11:20:00 AM 266.7969 28-Oct-07 11:20:00 AM 110.1875 28-Oct-07 11:20:00 AM 261.0938 28-Oct-07 11:20:00 AM 108.734375 28-Oct-07 10:00:00 AM 266.25 28-Oct-07 10:00:00 AM 110.2578 28-Oct-07 10:00:00 AM 261.6406 28-Oct-07 10:00:00 AM 108.734375 Page 6 of 13

Calculation PBNP-994-21-02 Rev. 0 Attachment 8.3 Unit I T-127 Unit I - T-145 Unit 2 T-127 Unit 2

  • T-145 Letdown temp at regen HX outlet Letdown tamp at non regen HX outlet Letdown temp at regen HX outlet Letdown temp at non regen HX outlet 28-Oct-07 8:40:00 AM 266.4844 28-Oct-07 8:40:00 AM 110.0234 28-Oct-07 8:40:00 AM 262.0313 28-Oct-07 8:40:00 AM 108.734375 28-Oct-07 7:20:00 AM 266.4844 28-Oct-07 7:20:00 AM 110.0703 28-Oct-07 7:20:00 AM 263.125 28-Oct-07 7:20:00 AM 108.734375 28-Oct-07 6:00:00 AM 267.0313 28-Oct-07 6:00:00 AM 110.1406 28-Oct-07 6:00:00 AM 264.2188 28-Oct-07 6:00:00 AM 108.734375 28-Oct-07 4:40:00 AM 267.0313 28-Oct-07 4:40:00 AM 110.1406 28-Oct-07 4:40:00 AM 264.2188 28-Oct-07 4:40:00 AM 108.734375 28-Oct-07 3:20:00 AM 257.5781 28-Oct-07 3:20:00 AM 110.1172 28-Oct-07 3:20:00 AM 264.2188 28-Oct-07 3:20:00 AM 108.734375 28-Oct-07 2:00:00 AM 267.5781 28-Oct-07 2:00:00 AM 110.1875 28-Oct-07 2:00:00 AM 263.125 28-Oct-07 2:00:00 AM 108.734375 28-Oct-07 1:40:00 AM 267.5781 28-Oct-07 1:40:00 AM 110.2578 28-Oct-07 1:40:00 AM 263.125 28-Oct-07 1:40:00 AM 108.734375 28-Oct-07 12:20:00 AM 266.875 28-Oct-07 12:20:00 AM 110.1875 28-Oct-07 12:20:00 AM 262.0313 28-Oct-07 12:20:00 AM 108.734375 27-Oct-07 11:00:00 PM. 260.875 27-Oct-07 11:00:00 PM 110.2344 27-Oct-07 11:00:00 PM 261.4063 27-Oct-07 11:00:00 PM 108.734375 27-Oct-07 9:40:00 PM 266.875 27-Oct-07 9:40:00 PM 110.1641 27-Oct-07 9:40:00 PM 261.0938 27-Oct-07 9:40:00 PM 108.734375 27-Oct-07 - 8:20:00 PM 266:5625
  • 27-Oct-07 8:20:00 PM 110:0938 27-Oct-07 8:20:00PM 261:3281 .27Oct 8:20:00 PM -108:734375 27-Oct-07 7:00:00 PM 266.6406 27-Oct-07 7:00:00 PM 110.0703 27-Oct-07 7:00:00 PM 261.875 27-Oct-07 7:00:00 PM 108.734375 27-Oct-07 5:40:00 PM 266.6406 27-Oct-07 5:40:00 PM 110.1406 27-Oct-07 5:40:00 PM 262.4219 27-Oct-07 5:40:00 PM 108.734375 27-Oct-07 4:20:00 PM 266.875 27-Oct-07 4:20:00 PM 110.1875 27-Oct-07 4:20:00 PM 263.5156 27-Oct-07 4:20:00 PM 108.734375 27-Oct-07 3:00:00 PM 266.875 27-Oct-07 3:00:00 PM 110.2109 27-Oct-07 3:00:00 PM 264.0625 27-Oct-07 300:00 PM 108.734375 27-Oct-07 1:40:00 PM 266,9531 27-Oct-07 1:40:00 PM 110.2344 27-Oct-07 1:40:00 PM 263.5156 27-Oct-07 1:40:00 PM 108.734375 27-Oct-07 12:20:00 PM 266.9531 27-Oct-07 12:20:00 PM 110.1172 27-Oct-07 12:20:00 PM 262.8125 27-Oct-07 12:!20:00 PM 108.734375 27-Oct-07 11:00:00 AM 267.5781 27-Oct-07 11:00:00 AM 110.1172 27-Oct-07 11:00:00 AM 262.8125 27-Oct-07 11:00:00 AM 108.734375 27-Oct-07 9:40:00 AM 267,0313 27-Oct-07 9:40:00 AM 110.0469 27-Oct-07 9:40:00 AM 262.2656 27-Oct-07 9:40:00 AM 108.734375 27-Oct-07 8:20:00 AM 267.2656 27-Oct-07 8:20:00 AM 110.0234 27-Oct-07 8:20:00 AM 261.6406 27-Oct-07 8:20:00 AM 108.734375 27-Oct-07 7:00:00 AM 267.8125 27-Oct-07 7:00:00 AM 109.7422 27-Oct-07 7:00:00 AM 261.6406 27-Oct-07 7:00:00 AM 108.734375 27-Oct-07 5:40:00 AM 267.8125 27-Oct-07 5:40:00 AM 110.1172 27-Oct-07 5:40:00 AM 261.0938 27-Oct-07 5:40:00 AM 108.734375 27-Oct-07 4:20:00 AM 267.8125 27-Oct-07 4:20:00 AM 110.1875 27-Oct-07 4:20:00 AM 261.6406 27-Oct-07 4:20:00 AM 108.734375 27-Oct-07 3:00:00 AM 268.125 27-Oct-07 3:00:00 AM 110.1875 27-Oct-07 3:00:00 AM 262.7344 27-Oct-07 3:00:00 AM 108.75781 27-Oct-07 1:40:00 AM 267.0313 27-Oct-07 1:40:00 AM 110.0703 27-Oct-07 1:40:00 AM 264.9219 27-Oct-07 1:40:00 AM 108.75781 27-Oct-07 12:20:00 AM 268.6719 27-Oct-07 12:20:00 AM 110.0703 27-Oct-07 12:20:00 AM 264.6094 27-Oct-07 12:20:00 AM 108.75781 26-Oct-07 11:00:00 PM 267.5781 26-Oct-07 11:00:00 PM 110.2578 26-Oct-07 11:00:00 PM 264.4531 26-Oct-07 11:00:00 PM 108.75781 26-Oct-07 9:40:00 PM 268.125 26-Oct-07 9:40:00 PM 110.2344 26-Oct-07 9:40:00 PM 262.8906 26-Oct-07 9:40:00 PM 108.75781 26-Oct-07 8:20:00 PM 268.125 26-Oct-07 8:20:00 PM 110.375 26-Oct-07 8:20:00 PM 262.3438 26-Oct-07 8:20:00 PM 108.75781 26-Oct-07 7:00:00 PM 252.8125 26-Oct-07 7:00:00 PM 110.1172 26-Oct-07 7:00:00 PM 262.2656 26-Oct-07 7:00:00 PM 108.75781 26-Oct-07 5:40:00 PM 267.9688 26-Oct-07 5:40:00 PM 110,2813 26-Oct-07 5:40:00 PM 262.8125 26-Oct-07 5:40-,00 PM 108.75781 26-Oct-07 4:20:00 PM 267.1875 26-Oct-07 4:20:00 PM 110.4688 26-Oct-07 4:20:00 PM 263.3594 26-Oct-07 4:20:00 PM 108.75781 26-Oct-07 3:00:00 PM 266.6406 26-Oct-07 3:00:00 PM 110.2109 26-Oct-07 3:00:00 PM 263.3594 26-Oct-07 3:00:00 PM 108.75781 26-Oct-07 1:40:00 PM 267.1094 26-Oct-07 1:40:00 PM 110.0936 26-Oct-07 1:40:00 PM 263.8281 26-Oct-07 1:40:00 PM 108.75781 26-Oct-07 12:20:00 PM 267.5 26-Oct-07 12:20:00 PM 110.1406 26-Oct-07 12:20:00 PM 264.375 26-Oct-07 12:20:00 PM 108.75781 26-Oct-07 11:00:00 AM 267.8906 26-Oct-07 11:00:00 AM 110.3047 26-Oct-07 11:00:00 AM 263.8281 26-Oct-07 11:00:00 AM 108.75781 26-Oct-07 9:40:00 AM 267.5781 26-Oct-07 9:40:00 AM 110.3047 26-Oct-07 9:40:00 AM 262.7344 26-Oct-07 9:40:00 AM 108.75781 26-Oct-07 8:20:00 AM 267.6563 26-Oct-07 8:20:00 AM 110.2109 26-Oct-07 8:20:00AM 261.6406 26-Oct-07 8:20:00 AM 108.75781 26-Oct-07 7:00:00 AM 266.0156 26-Oct-07 7:00:00 AM 110.1406 26-Oct-07 7:00:00 AM 260.5469 26-Oct-07 7:00:00 AM 108.75781 26-Oct-07 5:40:00 AM 267.1094 26-Oct-07 5:40:00 AM 110.2813 26-Oct-07 5:40:00 AM 260.5469 26-Oct-07 5:40:00 AM 108.75781 26-Oct-07 4:20:00 AM 267.4219 26-Oct-07 4:20:00 AM 110.2109 26-Oct-07 4:20:00 AM 261.6406 26-Oct-07 4:20:00 AM 108.75781 26-Oct-07 3:00:00 AM 267.5 26-Oct-07 3:00:00 AM 110.0938 26-Oct-07 3:00:00 AM 262.2656 26-Oct-07 3:00:00 AM 108.75781 26-Oct-07 1:40:00 AM 267.8125 26-Oct-07 1:40:00 AM 110.2578 26-Oct-07 1:40:00 AM 262.4219 26-Oct-07 1:40:00 AM 108.75781 26-Oct-07 12:20:00 AM 267.2656 26-Oct-07 12:20:00 AM 110.3516 26-Oct-07 12:20:00 AM 262.2656 26-Oct-07 12:20:00 AM 108.75781 25-Oct-07 11:00:00 PM 267.2656 25-Oct-07 11:00:00 PM 109.9766 25-Oct-07 11:00:00 PM 261.7188 25-Oct-07 11:00:00 PM 108.75781 25-Oct-07 9:40:00 PM 268.125 25-Oct-07 9:40:00 PM 110.0938 25-Oct-07 9:40:00 PM 261.1719 25-Oct-07 9:40:00 PM 108.75781 25-Oct-07 8:20:00 PM 268.125 25-Oct-07 8:20:00 PM 110.1641 25-Oct-07 8:20:00 PM 261.0156 25-Oct-07 8:20:00 PM 108.75781 25-Oct-07 7:00:00 PM 267.6563 25-Oct-07 7:00:00 PM 110.0938 25-Oct-07 7:00:00 PM 261.5625 25-Oct-07 7:00:00 PM 108.75781 108.75781 25-Oct-07 5:40:00 PM 268.0469 25-Oct-07 5:40:00 PM 110.0234 25-Oct-07 5:40:00 PM 262.6563 25-Oct-07 5:40:00 PM Page 7 of 13

Calculation PBNP-994-21-02 Rev. 0 Attachment 8.3 Unit 1 T-127. Unit I - T-145 Unit 2 T-127 Unit 2 - T-145 Letdown temp at regen HX outlet Letdown tamp at non regen HX outlet Letdown temp at regen HX outlet Letdown temp at non regen HX outlet 25-Oct-07 4:20:00 PM 267.5 25-Oct-07 4:20:00 PM 110.1875 25-Oct-07 4:20:00 PM 264.2969 25-Oct-07 4:20:00 PM 108,75781 25-Oct-07 3:00:00 PM 268.2813 25-Oct-07 3:00:00 PM 110.3047 25-Oct-07 3:00:00 PM 264.375 25-Oct-07 3:00:00 PM 108.75781 5

25-Oct-07 1:40:00 PM 267.2658 2 -Oct-07 1:40:00 PM 110.3047 25-Oct-07 1:40:00 PM 264.375 25-0ct-07 1:40:00 PM 108.75781 25-Oct-07 12:20:00 PM 265.0781 25-Oct-07 12:20:00 PM 110.0938 25-Oct-07 12:20:00 PM 263.2813 25-Oct-07 12 :20:00 PM 108Y75781 25-Oct-07 11:00:00 AM 266.7969 25-Oct-07 11:00:00AM 110.1172 25-Oct-07 11:00:00 AM 262.7344 25-Oct-07 11:00:00 AM 108.75781 25-Oct-07 9:40:00 AM 266.7188 25-Oct-07 9:40:00 AM 110 25-Oct-07 9:40:00 AM 263.2813 25-Oct-07 9:40:00 AM 108.75781 25-Oct-07 8:20:00 AM 266.7188 25-Oct-07 8:20:00 AM 110.2578 25-Oct-07 8:20:00 AM 263.0469 25-Oct-07 8:20:00 AM 108.75781 2

25-Oct-07 7:00:00 AM 266.1719 5-Oct-07 7:00:00 AM 110.1406 25-Oct-07 7:00:00 AM 263.0469 25-Oct-07 7:00:00 AM 108.75781 2

25-Oct-07 5:40:00 AM 266.7188 5-Oct-07 5:40:00 AM 110.0703 25-Oct-07 5:40:00 AM 263.5938 25-Oct-07 5:40:00 AM 108.75781 25-Oct-07 4:20:00 AM 267.1094 25-Oct-07 4:20:00 AM 110.1875 263.0469 25-Oct-07 4:20:00 AM 108.75781 25-Oct-07 4:20:00 AM

.250---ct-07 3:00:00 AM.266.5625 25-Oct-87 3ý00100AM. -110.1875 25-Oct-07 -3:00:00-AM 262.8125 25-ýOc-07 300-.0AM 25-Oct-07 1:40:00 AM 266.875 25-Oct-07 1:40:00 AM 110.1875 25-Oct-07 1:40:00 AM 261.875 25-Oct-07 1:40:00 AM 108.75781 25-Oct-07 12:20:00 AM' 267.0313 25-Oct-07 12:20:00AM 110.641 25-Oct-07 12:20:00 AM 261.1719 25-Oct-07 12:20:00 AM 108.75781 24-Oct-07 11:00:00 PM 266.4844 24-Oct-07 11:00:00 PM 110.2344 24-Oct-07 11:00:00 PM 260.625 24-Oct-07 11:00:00 PM 108.75781 24-Oct-07 9:40:00 PM 266.7188 24-Oct-07 9:40:00 PM 110.2344 24-Oct-07 9:40:00 PM 261.1719 24-Oct-07 9:40:00 PM 108.75781 24-Oct-07 8:20:00 PM 266.875 24-Oct-07 8:20:00 PM 110,1406 24-Oct-07 8:20:00 PM 262.4219 24-Oct-07 8:20:00 PM 108.75781 24-Oct-07 7:00:00 PM 266.875 24-Oct-07 7:00:00 PM 110.2109 24-Oct-07 7:00:00 PM 263.5156 24-Oct-07 7:00:00 PM 108.75781 24-Oct-07 5:40:00 PM 267.4219 24-Oct-07 5:40:00 PM 110.375 24-Oct-07 5:40:00 PM 264.0625 24-Oct-07 5:40:00 PM 108.75781 24-Oct-07 4:20:00 PM 267.4219 24-Oct-07 4:20:00 PM 110.2109 24-Oct-07 . 4:20:00 PM 264.0625 24-Oct-07 4:20:00 PM 108.75781 24 108.75781 24-Oct-07 3:00:00 PM 267.4219 -Oct-07 3:00:00 PM 110.0938 24-Oct-07 3:00:00 PM 264.6094 24-Oct-07 3:00:00 PM 4 108.75781 24-Oct-07 1:40:00 PM 267.8906 24-Oct-07 1:40:00 PM 110.1641 24-Oct-07 1:40:00 PM - 261.875 2 -Oct-07 1:40:00 PM 24-Oct-07 12:20:00 PM 266.7969 24-Oct-07 12:20:00 PM 110.7969 24-Oct-07 12:20:00 PM 259.6875 24-Oct-07 12:20:00 PM 108.75781 24 108.75781 24-Oct-07 11:00:00AM 266.1719 -Oct-07 11:00:00AM 110.4219 24-Oct-07 11:00:00 AM 261.3281 24-Oct-07 11:00:00 AM 4 108.75781 24-Oct-07 9:40:00 AM 265.0781 24-Oct-07 9:40:00 AM 110.1406 24-Oct-07 9:40:00AM 261.1719 2 -Oct-07 9:40:00 AM 4 108.78125 24-Oct-07 8:20:00 AM 266.1719 24-Oct-07 8:20:00 AM 110.0938 24-Oct-07 8:20:00 AM 259.5313 2 -Oct-07 8:20:00 AM 24-Oct-07 7:00:00 AM 266.7188 24-Oct-07 7:00:00 AM 110.1172 24-Oct-07 7:00:00 AM 261.9531 24-Oct-07 7:00:00 AM 108.78125 24-Oct-07 5:40:00 AM 266.9531 5:40:00 AM 110.1172 24-Oct-07 5:40:00 AM 264.1406 24-Oct-07 5:40:00 AM 108.78125 24-Oct-07 24-Oct-07 4:20:00 AM 267.3438 24-Oct-07 4:20:00 AM 110.2344 24-Oct-07 4:20:00 AM 264.6875 24-Oct-07 4:20:00 AM 108.78125 24-Oct-07 3:00:00 AM 266.7969 3:00:00 AM 110.2109 .24-Oct-07 3:00:00 AM 263.9063 24-Oct-07 3:00:00 AM 108.78125 24-Oct-07 4 108.78125 24-Oct-07 1:40:00 AM 267.1875 24-Oct-07 1:40:00 AM 109.9766 24-Oct-07 1:40:00 AM 263.6719 2 -Oct-07 1:40:00 AM 4 108.78125 24-Oct-07 12:20:00 AM 266,7969 2 -Oct-07 12:20:00 AM 110.6797 24-Oct-07 12:20:00 AM 263,125 24-Oct-07 12:20:00 AM 23-Oct-07 11:00:00 PM 266,7969 23-Oct-07 11:00:00 PM 110.4688 23-Oct-07 11:00:00 PM 262.0313 23-Oct-07 11:00:00 PM 108.78125 23-Oct-07 9:40:00 PM 264.0625 23-Oct-07 9:40:00 PM 110.1875 9:40:00 PM 261.4844 23-Oct-07 9:40:00 PM 108.78125 23-Oct-07 23-Oct-07 8:20:00 PM 267.1094 23-Oct-07 8:20:00 PM 262.0313 8:20:00 PM 108.78125 23-Oct-07 8:20:00 PM 110.2813 23-Oct-07 23-Oct-07 7:00:00 PM 266.7969 23-Oct-07 7:00:00 PM 110.1641 23-Oct-07 7:00:00 PM 262.5781 23-Oct-07 7:00:00 PM 108.78125 23-Oct-07 5:40:00 PM 266.6406 5:40:00 PM 108.78125 23-Oct-07 5:40:00 PM 110.2344 23-Oct-07 5:40:00 PM 262.4219 23-Oct-07 23-Oct-07 4:20:00 PM 266.6406 23-Oct-07 4:20:00 PM 110.2344 23-Oct-07 4:20:00 PM 262.8125 23-Oct-07 4:20:00 PM 108.78125 23-Oct-07 3:00:00 PM 266.7188 23-Oct-07 3:00:00 PM 110.0938 23-Oct-07 3:00:00 PM 262.1875 23-Oct-07 3:00:00 PM 108.78125 23-Oct-07 1:40:00 PM 267.2656 23-Oct-07 1:40:00 PM 110.2109 23-Oct-07 1:40:00 PM 262.1875 23-Oct-07 1:40:00 PM 108.78125 23-Oct-07 12:20:00 PM 266.7188 23-Oct-07 12:20:00 PM 110.1172 23-Oct-07 12:20:00 PM 263.2813 23-Oct-07 12:20:00 PM 108.78125 23-Oct-07 11:00:00 AM 267.0313 23-Oct-07 11:00:00 AM 110.1641 23-Oct-07 11:00:00 AM 263.8281 23-Oct-07 11:00:00 AM 108.78125 23-Oct-07 9:40:00 AM 267.0313 23-Oct-07 9:40:00 AM 110.1641 23-Oct-07 9:40:00 AM 264.375 23-Oct-07 9:40:00 AM 108.78125 23-Oct-07 8:20:00 AM 266.875 3

110.1875 264.6094 8:20:00 AM 108.78125 2 -Oct-07 8:20:00 AM 23-Oct-07 8:20:00 AM 23-Oct-07 23-Oct-07 7:00:00 AM 265.2344 23-Oct-07 7:00:00 AM 110.1172 23-Oct-07 7:00:00 AM 263.8281 23-Oct-07 7:00:00 AM 108.78125 23-Oct-07 5:40:00 AM 267.5 23-Oct-07 5:40:00 AM 110.1875 23-Oct-07 5:40:00 AM 263.2813 23-Oct-07 5:40:00 AM 108.78 125 23-Oct-07 4:20:00 AM 267.5 262.4219 4:20:00 AM 108.78125 23-Oct-07 4:20:00 AM 110.2813 23-Oct-07 4:20:00 AM 23-Oct-07 23-Oct-07 3:00:00 AM 266.9531 23-Oct-07 3:00:00 AM 109,25 23-Oct-07 3:00:00 AM 262.9688 23-Oct-07 3:00:00 AM 108.78125 23-Oct-07 1:40:00 AM 267.5 110.2578 1:40:00 AM 262.4219 23-Oct-07 1:40:00 AM 108.78125 23-Oct-07 1:40:00 AM 23-Oct-07 23-Oct-07 12:20:00 AM 267.5781 23-Oct-07 12:20:00AM 110.3047 23-Oct-07 12:20:00 AM 263.5156 23-Oct-07 12:20:00 AM 108.78125 108.78 125 Page 8 of 13

Calculation PBNP-994-21-02 Rev. 0 Attachment 8.3 Unit I T-127 Unit I - T-145 Unit 2 T-127 Unit 2 - T-145 Letdown tamp at regen HX outlet Letdown tamp at non regen HX outlet Letdown temp at regen HX outlet Letdown temp at non regen HX outlet 22-Oct-07 11:00:00PM 266.7969 22-Oct-07 11:00:00 PM 110.0938 22-Oct-07 11:00:00 PM 264.1406 22-Oct-07 11:00:00 PM 108.78125 22-Oct-07 9:40:00 PM 267.3438 22-Oct-07 9:40:00 PM 109.9766 22-Oct-07 9:40:00 PM 264.1406 22-Oct-07 9:40:00 PM 108.78125 22-Oct-07 8:20:00 PM 267.8906 22-Oct-07 8:20:00 PM 110.0703 22-Oct-07 8:20:00 PM 263.5938 22-Oct-07 8:20:00 PM 108.80469 22-Oct-07 7:00:00 PM 267.3438 22-Oct-07 7:00:00 PM 110.3047 22-Oct-07 7:00:00 PM 262.5 22-Oct-07 7:00:00 PM 108.80469 22-Oct-07 5:40:00 PM 267.3438 22-Oct-07 5:40:00 PM 110.2578 22-Oct-07 5:40:00 PM 261.4063 22-Oct-07 5:40:00 PM 108.80469 22-Oct-07 4:20:00 PM 267.3438 22-Oct-07 4:20:00 PM 110.1641 22-Oct-07 4:20:00 PM 261.0938 22-Oct-07 4:20:00 PM 108,80469 22-Oct-07 3:00:00 PM 267.5781 22-Oct-07 3:00:00 PM 110.2344 22-Oct-07 3:00:00 PM 261.6406 22-Oct-07 3:00:00 PM 108.80469 22-Oct-07 1:40:00 PM 267.0313 22-Oct-07 1:40:00 PM 110.3516 22-Oct-07 1:40:00 PM .261.9531 22-Oct-07 1:40:00 PM 108.80469 22-Oct-07 12:20:00 PM 264.8438 22-Oct-07 12:20:00 PM 110.0469 22-Oct-07 12:20:00 PM 262.4219 22-Oct-07 12:20:00 PM 108.80469 22-Oct-07 11:0000 AM 266.4844 22-Oct-07 11:00:00AM 110.2109 22-Oct-07 11:00:00 AM 262.9688 22-Oct-07 11:00:00AM 108.80469

_.22'Oct-07.9:40:00AM--- 266.25.- 22-Oct40 9.,40:00 AM-110.1641 ..... 22-Oct07.-9:40:00AM-264.0625-- 22-Oct-07--.9:4000"AM--108:80469 -

22-Oct-07 8:20:00 AM 268.7969 22-Oct-07 8:20:00 AM 110.1875 22-Oct-07 8:20:00 AM 264.2188 22-Oct-07 8:20:00 AM 108.80469 22-Oct-07 7:00:00 AM 266.7969 22-Oct-07 7:00:00 AM 110.2109 22-Oct-07 7:00:00 AM 263.6719 22-Oct-07 7:00:00 AM 108.80469 22-Oct-07 5:40:00 AM 268.7188 22-Oct-07 5:40:00 AM 110.1406 22-Oct-07 5:40:00 AM 262.0313 22-Oct-07 6:40:00AM 108.80469

. 22-Oct-07 4:20:00 AM 266.1719 22-Oct-07 4:20:00 AM 110.2109 22-Oct-07 4:20:00AM 261.4844 22-Oct-07 4:20:00AM 108.80469 22-Oct-07 -3:00:00AM 265.7031 22-Oct-07 3:00:00AM 110.1641 22-Oct-07 3:00:00 AM 260.3906 22-Oct-07 3:00:00 AM 108.80469 22-Oct-07 1:40:00 AM 265.8594 22-Oct-07 1:40:00 AM 110.2578 22-Oct-07 1:40:00 AM 261.1719 22-Oct-07 1:40:00 AM 108.80469 22-Oct-07 12:20:00 AM 265.7031 22-Oct-07 12:20:00 AM 110.0469 22-Oct-07 12:20:00 AM 262.2656 22-Oct-07 12:20:00 AM 108.80469 21-Oct-07 11:00:00 PM 266.3281 21-Oct-07 11:00:00 PM 109.8828 21-Oct-07 11:00:00 PM 263.3594 21-Oct-07 11:00:00 PM 108.80469 21-Oct-07 9:40:00 PM 266.25 21-Oct-07 9:40:00 PM 110.2344 21-Oct-07 9:40:00 PM 263.3594 21-Oct-07 9:40:00 PM 108.80469 21-Oct-07 8:20:00 PM 265.7031 21-Oct-07 8:20:00 PM 110.0703 21-Oct-07 8:20:00 PM 263.9063 21-Oct-07 8:20:00 PM 108.80469 21-Oct-07 7:00:00 PM 266.5625 21-Oct-07 7:00:00 PM 110.2109 21-Oct-07 7:00:00 PM 264.2188 21-Oct-07 7:00:00 PM 108.80469 21-Oct-07 5:40:00 PM 267.1094 21-Oct-07 5:40:00 PM 110.2578 21-Oct-07 5:40:00 PM 263.4375 21-Oct-07 5:40:00 PM 108.80469 21-Oct-07 4:20:00 PM 266.5625 21-Oct-07 4:20:00 PM 110.3516 21-Oct-07 4:20:00 PM 262.3438 21-Oct-07 4:20:00 PM 108.80469 21-Oct-07 3:00:00 PM 265.625 21-Oct-07 3:00:00 PM 110.2344 21-Oct-07 3:00:00 PM 262.3438 21-Oct-07 3:00:00 PM 108.80469 21-Oct-07 1:40:00 PM 266.1719 21-Oct-07 1:40:00 PM 110.1406 21-Oct-07 1:40:00 PM 261.25 21-Oct-07 1:40:00 PM 108.80469 21-Oct-07 12:20:00 PM 265.625 21-Oct-07 12:20:00 PM 110.2109 21-Oct-07 12:20:00 PM 261.25 21-Oct-07 12:20:00 PM 108.60469 21-Oct-07 11:00:00AM 267.2656 21-Oct-07 11:00:00AM 110.1172 21--Oct-07 11:00:00AM 261.25 21-Oct-07 11:00:00AM 108.80469 21-Oct-07 9:40:00 AM 266.9531 21-Oct-07 9:40:00 AM 110.1406 21-Oct-07 9:40:00 AM 261.6406 21-Oct-07 9:40:00 AM 108.80469 21-Oct-07 8:20:00 AM 266.875 21-Oct-07 8:20:00 AM 110 21-Oct-07 8:20:00 AM 261.875 21-Oct-07 8:20:00 AM 108.80469 21-Oct-07 7:00:00 AM 267.1094 21-Oct-07 7:00:00 AM 110.2344 21-Oct-07 7:00:00 AM 262.4219 21-Oct-07 7:00:00 AM 108.828125 21-Oct-07 5:40:00 AM 266.875 21-Oct-07 5:40:00 AM 110.0703 21-Oct-07 5:40:00 AM 263.2813 21-Oct-07 5:40:00 AM 108.828125 21-Oct-07 4:20:00 AM 267.1094 21-Oct-07 4:20:00 AM 110.0234 21-Oct-07 4:20:00 AM 263.8281 21-Oct-07 4:20:00 AM 108.828125 21-Oct-07 3:00:00 AM 267.1094 21-Oct-07 3:00:00 AM 110.1641 21-Oct-07 3:00:00 AM 263.8281 21-Oct-07 3:00:00 AM 108.828125 21-Oct-07 1:40:00 AM 267.7344 21-Oct-07 1:40:00 AM 110.3281 21-Oct-07 1:40:00 AM 264.375 21-Oct-07 1:40:00 AM 108.828125 21-Oct-07 12:20:00 AM 267.1875 21-Oct-07 12:20:00 AM 110.3516 21-Oct-07 12:20:00 AM 263.9063 21-Oct-07 12:20:00AM 108,828125 20-Oct-07 11:00:00 PM 266.6406 20-Oct-07 11:00:00 PM 110.2578 20-Oct-07 11:00:00 PM 262.9688 20-Oct-07 11:00:00 PM 108.828125 20-Oct-07 9:40:00 PM 266.3281 20-Oct-07 9:40:00 PM 110.2813 20-Oct-07 9:40:00 PM 261.7188 20-Oct-07 9:40:00 PM 108.828125 20-Oct-07 8:20:00 PM 266.3281 20-Oct-07 8:20:00 PM 110.3047 20-Oct-07 8:20:00 PM 260.625 20-Oct-07 8:20:00 PM 108.828125 20-Oct-07 7:00:00 PM 266.0938 20-Oct-07 7:00:00 PM 110.2109 20-Oct-07 7:00:00 PM 261.4063 20-Oct-07 7:00:00 PM 108.828125 20-Oct-07 5:40:00 PM 267.1875 20-Oct-07 5:40:00 PM 110 20-Oct-07 5:40:00 PM 261.0156 20-Oct-07 5:40:00 PM 108.828125 20-Oct-07 4:20:00 PM 267.7344 20-Oct-07 4:20:00 PM 110.4453 20-Oct-07 4:20:00 PM 281.25 20-Oct-07 4:20:00 PM 108.828125 20-Oct-07 3:00:00 PM 267.7344 20-Oct-07 3:00:00 PM 110.4453 20-Oct-07 3:00:00 PM 261.25 20-Oct-07 3:00:00 PM 108.828125 20-Oct-07 1:40:00 PM 269.375 20-Oct-07 1:40:00 PM 110.2109 20-Oct-07 1:40:00 PM 261.7969 20-Oct-07 1:40:00 PM 108.828125 20-Oct-07 12:20:00 PM 266.6406 20-Oct-07 12:20:00 PM 109.7422 20-Oct-07 12:20:00 PM 262.1875 20-Oct-07 12:20:00 PM 108.828125 20-Oct-07 11:00:00 AM 272.6563 20-Oct-07 11:00:00 AM 110.2578 20-Oct-07 11:00:00AM 263.2813 20-Oct-07 11:00:00 AM 108.828125 20-Oct-07 9:40:00AM 267.7344 20-Oct-07 9:40:00 AM 110.0703 20-Oct-07 9:40:00 AM 263.4375 20-Oct-07 9:40:00 AM 108.828125 20-Oct-07 8:20:00 AM 267.8125 20-Oct-07 8:20:00 AM 110.2578 20-Oct-07 8:20:00 AM 263.8281 20-Oct-07 8:20:00 AM 108.828125 20-Oct-07 7:00:00 AM 267.6563 20-Oct-07 7:00:00 AM 110.2109 20-Oct-07 7:00:00 AM 264.375 20-Oct-07 7:00:00 AM 108.828125 Page 9 of 13

Calculation PBNP-994-21-02 Rev. 0 Attachment 8.3 Unit I T-127 Unit 1 - T-145 Unit 2 T-127 Unit 2 - T-145 Letdown temp at regen HX outlet Letdown temp at non regen HX outlet Letdown temp at regen HX outlet Letdown temp at non regen HX outlet 20-Oct-07 5:40:00 AM 267.6563 20-Oct-07 5:40:00 AM 110.2344 20-Oct-07 5:40:00 AM 263.4375 20-Oct-07 5:40:00 AM 108.828125 20-Oct-07 4:20:00 AM 267.1094 20-Oct-07 4:20:00 AM 110.2109 20-Oct-07 4:20:00 AM 262.8906 20-Oct-07 4:20:00 AM 108.828125 20-Oct-07 3:00:00 AM 266.5625 20-Oct-07 3:00:00 AM 110.2578 20-Oct-07 3:00:00 AM 266.1719 20-Oct-07 3:00:00 AM 108.828125 20-Oct-07 1:40:00 AM 267.1094 20-Oct-07 1:40:00 AM 110.1641 20-Oct-07 1:40:00 AM 263.8281 20-Oct-07 1:40:00 AM 108.828125 20-Oct-07 12:20:00 AM 267.6563 20-Oct-07 12:20:00 AM 110.2109 20-Oct-07 12:20:00 AM 262.1875 20-Oct-07 12:20:00 AM 108.828125 19-Oct-07 11:00:00 PM 267.4219 19-Oct-07 11:00:00 PM 110.3964 19-Oct-07 11:00:00 PM 262.6563 19-Oct-07 11:00:00 PM 108.828125 19-Oct-07 9:40:00 PM 287.4219 19-Oct-07 9:40:00 PM 109.625 19-Oct-07 9:40:00 PM 262.6563 19-Oct-07 9:40:00 PM 108.828125 19-Oct-07 8:20:00 PM 268.2031 19-Oct-07 8:20:00 PM 110.375 19-Oct-07 8:20:00 PM 264.2969 19-Oct-07 8:20:00 PM 108.828125 19-Oct-07 7:00:00 PM 268.2031 19-Oct-07 7:00:00 PM 110.2109 19-Oct-07 7:00:00 PM 264.2969 19-Oct-07 7:00:00 PM 108.626125 19-Oct-07 5:40:00 PM 268.2031 19-Oct-07 5:40:00 PM 110.3984 19-Oct-07 5:40:00 PM 265.3906 19-Oct-07 5:40:00 PM 108.828125 1 9-Oct:07 4:20:00 PM- 1 268.125 - 4:20:00PM 110:3984 19-Oct-07 19-Oct-07 4;20;00 PM 265:9375- 19-Odt-07"- 4:20;00-Pt '108:828125 19-Oct-07 3:00:00 PM 266.4844 19-Oct-07 3:00:00 PM 110.2109 19-Oct-07 3:00:00 PM 265.5469 19-Oct-07 3:00:00 PM 108.828125 19-Oct-07 1:40:00 PM 264.8438 19-Oct-07 1:40:00 PM 110.2344 19-Oct-07 1:40:00 PM 265.5469 19-Oct-07 1:40:00 PM 108.85156 19-Oct-07 12:20:00 PM 267.0313 19-Oct-07 12:20:00 PM 110.2578 19-Oct-07 12:20:00 PM 264.4531 19-Oct-07 12:20:00 PM 108.85156 19-Oct-07 11:00:00 AM 267.0313 19-Oct-07 11:00:00 AM 110.2578 19-Oct-07 11:00:00 AM 263.9063 19-Oct-07 11:00:00 AM 108.85156 19-Oct-07 9:40:00 AM 265.9375 19-Oct-07 9:40:00 AM 110.2813 19-Oct-07 9:40:00 AM 262.8125 19-Oct-07 9:40:00 AM 108.85156 19-Oct-07 8:20:00 AM 266.4844 19-Oct-07 8:20:00 AM 110.3047 19-Oct-07 8:20:00 AM 262.8125 19-Oct-07 8:20:00 AM 108.85156 19-Oct-07 7:00:00 AM 266.9531 19-Oct-07 7:00:00 AM 110.3047 19-Oct-07 7:00:00 AM 261.7188 19-Oct-07 7:00:00 AM 108.85156 19-Oct-07 5:40:00 AM 266.9531 19-Oct-07 5:40:00 AM 110.2813 19-Oct-07 5:40:00 AM 262.8125 19-Oct-07 5:40:00 AM 108.85156 19-Oct-07 4:20:00 AM 266.4063 19-Oct-07 4:20:00 AM 110.1875 19-Oct-07 4:20:00 AM 262.2656 19-Oct-07 4:20:00 AM 108.85156 19-Oct-07 3:00:00 AM 266.4063 1 9-Oct-07 3:00:00 AM 110.0703 19-Oct-07 3:00:00 AM 262.8125 19-Oct-07 3:00:00 AM 108.85156 19-Oct-07 1:40:00 AM 267.0313 19-Oct-07 1:40:00 AM 110.1172 19-Oct-07 1:40:00 AM 263.9063 19-Oct-07 1:40:00 AM 108.85156 19-Oct-07 12:20:00 AM 266.9531 19-Oct-07 12:20:00 AM 110.3281 19-Oct-07 12:20:00 AM 265.5469 19-Oct-07 12:20:00 AM 108.85156 18-Oct-07 11:00:00 PM 287.1875 18-Oct-07 11:00:00 PM 110.1641 18-Oct-07 11:00:00 PM 266.0938 18-Oct-07 11:00:00 PM 108.85156 18-Oct-07 9:40:00 PM 267.7344 18-Oct-07 9:40:00 PM 110.2578 18-Oct-07 9:40:00 PM 266.0938 18-Oct-07 9:40:00 PM 108.85156 18-Oct-07 8:20:00 PM 267.1875 18-Oct-07 8:20:00 PM 110.3516 18-Oct-07 8:20:00 PM 265.5469 18-Oct-07 8:20:00 PM 108.85156 18-Oct-07 7:00;00 PM 266.6406 18-Oct-07 7:00:00 PM 110.3516 18-Oct-07 7:00:00 PM 263.9063 18-Oct-07 7:00:00 PM 108.85156 18-Oct-07 5:40:00 PM 267.1094 18-Oct-07 5:40:00 PM 110.3281 18-Oct-07 5:40:00 PM 261.1719 18-Oct-07 5:40:00 PM 108.85156 1-Oct-07 4:20:00 PM 207.1094 18-Oct-07 4:20:00 PM 110.3047 18-Oct-07 4:20:00 PM 262.8125 18-Oct-07 4:20:00 PM 108.85156 18-Oct-07 3:00:00 PM 266.5625 18-Oct-07 3:00:00 PM 110.2344 18-Oct-07 3:00:00 PM 262.2656 18-Oct-07 3:00:00 PM 108.85156 18-Oct-07 1:40:00 PM 266.875 18-Oct-07 1:40:00 PM 110.2344 18-Oct-07 1:40:00 PM 263.3594 18-Oct-07 1:40:00 PM 108.875 18-Oct-07 12:20:00 PM 266.875 18-Oct-07 12:20:00 PM 110.2109 18-Oct-07 12:20:00 PM 264.4531 18-Oct-07 12:20:00 PM 108.875 18-Oct-07 11:00:00 AM 266.7969 18-Oct-07 11:00:00 AM 110.3516 18-Oct-07 11:00:00 AM 265 18-Oct-07 11:00:00 AM 108.875 18-Oct-07 9:40:00 AM 266.7969 18-Oct-07 9:40:00 AM 110.2344 18-Oct-07 9:40:00 AM 264.9219 18-Oct-07 9:40:00 AM 108.875 18-Oct-07 8:20:00 AM 266.9531 18-Oct-07 8:20:00 AM 110.1641 18-Oct-07 8:20:00 AM 266.0156 18-Oct-07 8:20:00 AM 108.875 18-Oct-07 7:00:00 AM 266.4063 18-Oct-07 7:00:00 AM 110.2344 18-Oct-07 7:00:00 AM 265.4688 18-Oct-07 7:00:00 AM 108.875 18-Oct-07 5:40:00 AM 266.7969 18-Oct-07 5:40:00 AM 110.2344 18-Oct-07 5:40:00 AM 264.375 18-Oct-07 5:40:00 AM 108.875

.18-Oct-07 4:20:00 AM 266.7969 18-Oct-07 4:20:00 AM 110.2578 18-Oct-07 4:20:00 AM 263.8281 18-Oct-07 4:20:00 AM 108.875 18-Oct-07 3:00:00 AM 266.7969 18-Oct-07 3:00:00 AM 110.2578 18-Oct-07 3:00:00 AM 262.7344 18-Oct-07 3:00:00 AM 108.875 18-Oct-07 1:40:00 AM 266.25 18-Oct-07 1:40:00 AM 110.2344 18-Oct-07 1:40:00 AM 262.7344 18-Oct-07 1:40:00 AM 108.875 18-Oct-07 12:20:00 AM 266.25 18-Oct-07 12:20:00 AM 110.0703 18-Oct-07 12:20:00 AM 264.375 18-Oct-07 12:20:00 AM 108.875 17-Oct-07 11:00:00 PM 266.7969 17-Oct-07 11:00:00 PM 109.8359 17-Oct-07 11:00:00 PM 266.0156 17'Oct-07 1:100:00 PM 108.875 17-Oct-07 9:40:00 PM 267.3438 17-Oct-07 9:40:00 PM 110.1172 17-Oct-07 9:40:00 PM 267.1094 17-Oct-07 9:40:00 PM 108.875 17-Oct-07 8:20:00 PM 268.2813 17-Oct-07 8:20:00 PM 110.4922 17-Oct-07 8:20:00 PM 267.6563 17-Oct-07 8:20:00 PM 108.875 17-Oct-07 7:00:00 PM 268.4375 17-Oct-07 7:00:00 PM 110.2578 17-Oct-07 7:00:00 PM 267.1094 17-Oct-07 7:00:00 PM 108.875 17-Oct-07 5:40:00 PM 268.4375 17-Oct-07 5:40:00 PM 110.2578 17-Oct-07 8:40:00 PM 266.5625 17-Oct-07 5:40:00 PM 108.875 7

17-Oct-07 4:20:00 PM 267.8906 17-Oct-07 4:20:00 PM 110.1406 17-Oct-07 4:20:00 PM 267.1094 17-Oct-0 4:20:00 PM 108.89844 17-Oct-07 3:00:00 PM 267.3438 17-Oct-07 3:00:00 PM 110.0234 17-Oct-07 3:00:00 PM 265.4688 17-Oct-07 3:00:00 PM 108.89844 17-Oct-07 1:40:00 PM 267.7344 17-Oct-07 1:40:00 PM 110.0469 17-Oct-07 1:40:00 PM 264.9219 17-Oct-07 1:40:00 PM 108.89844 Page 10 of 13

Calculation PBNP-994-21-02 Rev. 0 Attachment 8.3 Unit 1 T-127 Unit 1 - T-145 Unit 2 T-127 Unit 2 - T-145 Letdown temp at regen HX outlet Letdown tamp at non regen HX outlet Letdown tamp at regen HX outlet Letdown tamp at non regen HX outlet 17-Oct-07 12:20:00 PM 268.2813 17-Oct-07 12:20:00 PM 110.2109 17-Oct-07 12:20:00 PM 264.9219 17-Oct-07 12:20:00 PM 108.89844 17-Oct-07 11:00:00 AM 267.7344 17-Oct-07 11:00:00 AM 110.3984 17-Oct-07 11:00:00 AM 264.375 17-Oct-07 11:00:00 AM 108.89844 17-Oct-07 9:40:00 AM 267.1875 17-Oct-07 9:40:00 AM 110.2578 17-Oct-07 9:40:00 AM 264.375 17-Oct-07 9:40:00 AM 108.89844 17-Oct-07 8:20:00 AM 267.1875 17-Oct-07 8:20:00 AM 110.1875 17-Oct-07 8:20:00 AM 263.8281 17-Oct-07 8:20:00 AM 108.89844 17-Oct-07 7:00:00 AM 265.5469 17-Oct-07 7:00:00 AM 110.3281 17-Oct-07 7:00:00 AM 265.1563 17-Oct-07 7:00:00 AM 108.89844 17-Oct-07 5:40:00 AM 267.7344 17-Oct-07 5:40:00 AM 110,2344 17-Oct-07 5:40:00 AM 265.7031 17-Oct-07 5:40:00 AM 108.89844 17-Oct-07 4:20:00 AM 207.4219 17-Oct-07 4:20:00 AM 110.2109 17-Oct-07 4:20:00 AM 265.7031 17-Oct-07 4:20:00 AM 108.89844 17-Oct-07 3:00:00 AM 267.4219 17-Oct-07 3:00:00 AM 110.1406 17-Oct-07 3:00:00 AM 266.7969 17-Oct-07 3:00:00 AM 108.89844 17-Oct-07 1:40:00 AM 267.4219 17-Oct-07 1:40:00 AM 110.0703 17-Oct-07 1:40:00 AM 267.3438 17-Oct-07 1:40:00 AM 108.89844 17-Oct-07 12:20:00 AM 267.2656 17-Oct-07 12:20:00 AM 110.0469 17-Oct-07 12:20:00 AM 266.7969 17-0ct-07 12:20:00 AM 108.89844 16-Oct -11:00:00 PM* 267:8125 16-Oct-07 11:00:00*PM -110:2344 Oct-07 11:0000 PM 2667969 -16:Obt07- -I1I:OOWO-PM*-108.89644-16-Oct-07 9:40:00 PM 267.9688 16-Oct-07 9:40:00 PM 110.3984 16-Oct-07 9:40:00 PM 265.7031 16-Oct-07 9:40:00 PM 108.89844 16-Oct-07 8:20:00 PM 267.9688 16-Oct-07 8:20:00 PM 110.3047 16-Oct-07 8;20:00 PM 266.5625 16-Oct-07 8:20:00 PM 108.89844 16-Oct-07 7:00:00 PM 267.9688 16-Oct-07 7:00:00 PM 110,2578 16-Oct-07 7:00:00 PM 267.1875 16-Oct-07 7:00:00 PM 108.89844 16-Oct-07 5:40:00 PM 266.3281 16-Oct-07 5:40:00 PM 110.4219 18-Oct-07 5:40:00 PM 267.1875 16-Oct-07 5:40:00 PM 108.89844 16-Oct-07 4:20:00 PM 264.6875 16-Oct-07 4:20:00 PM 110.2813 16-Oct-07 4:20:00 PM 267.7344 16-Oct-07 4:20:00 PM 108.89844 16-Oct-07 3:00:00 PM 267.1875 16-Oct-07 3:00:00 PM 110.2578 16-Oct-07 3:00:00 PM 267.9688 16-Oct-07 3:00:00 PM 108.89844 16-Oct-07 1:40:00 PM 267.1875 16-Oct-07 1:40:00 PM 110.2578 16-Oct-07 1:40:00 PM 268.125 16-Oct-07 1:40:00 PM 108.89844 16-Oct-07 12:20:00 PM 267.7344 16-Oct-07 12:20:00 PM 109.6719 16-Oct-07 12:20:00 PM 267.5 16-Oct-07 12:20:00 PM 108.89844 16-Oct-07 11:00:00 AM 267,2656 16-Oct-07 11:00:00 AM 110.1875 16-Oct-07 11:00:00 AM 268.5938 16-Oct-07 11:00:00 AM 108.921875 16-Oct-07 9:40:00 AM 267.2656 16-Oct-07 9:40:00 AM 110.2109 16-Oct-07 9:40:00 AM 269.1406 16-Oct-07 9:40:00 AM 108.921875 16-Oct-07 8:20:00 AM 267.2656 16-Oct-07 8:20:00 AM 110.1641 16-Oct-07 8:20:00 AM 269.6875 16-Oct-07 8:20:00 AM 108.921875 16-Oct-07 7:00:00 AM 265.625 16-Oct-07 7:00:00 AM 110.1641 16-Oct-07 7:00:00 AM 269.6094 16-Oct-07 7:00:00 AM 108.921875 16-Oct-07 5:40:00 AM 267.2656 16-Oct-07 5:40:00 AM 110.2813 16-Oct-07 5:40:00 AM 269.0625 16-Oct-07 5:40:00 AM 108.921875 16-Oct-07 4:20:00 AM 267.2656 16-Oct-07 4:20:00 AM 110.2578 16-Oct-07 4:20:00 AM 268.125 16-Oct-07 4:20:00 AM 108.921875 16-Oct-07 3:00:00 AM 266.1719 16-Oct-07 3:00:00 AM 110.7266 16-Oct-07 3:00:00 AM 268.125 16-Oct-07 3:00:00 AM 108.921875 16-Oct-07 1:40:00 AM 266.7188 16-Oct-07 1:40:00 AM 108.1484 16-Oct-07 1:40:00 AM 267.0313 16-Oct-07 1:40:00 AM 108.921875 16-Oct-07 12:20:00 AM 266.1719 16-Oct-07 12:20:00 AM 110.1641 16-Oct-07 12:20:00 AM 265.9375 16-Oct-07 12:20:00 AM 108.921875 15-Oct-07 11:00:00 PM 266.1719 15-Oct-07 11:00:00 PM 110.1172 15-Oct-07 11:00:00 PM 266.4844 15-Oct-07 11:00:00 PM 108.921875 15-Oct-07 9:40:00 PM 266.3281 15-Oct-07 9:40:00 PM 110.1406 15-Oct-07 9:40:00 PM 266.5625 15-Oct-07 9:40:00 PM 108.921875 15-Oct-07 8:20:00 PM 266.3281 15-Oct-07 8:20:00 PM 110.1406 15-Oct-07 8:20:00 PM 267.1094 15-Oct-07 8:20:00 PM 108.921875 15-Oct-07 7:00:00 PM 266.875 15-Oct-07 7:00:00 PM 110.1641 15-Oct-07 7:00:00 PM 268.2031 15-Oct-07 7:00:00 PM 108.921875 15-Oct-07 5:40:00 PM 266.3281 15-Oct-07 5:40:00 PM 110.0469 15-Oct-07 5:40:00 PM 269.8438 15-Oct-07 5:40:00 PM 108.921875 15-Oct-07 4:20:00 PM 267.1094 15-Oct-07 4:20:00 PM 109.9063 16-Oct-07 4:20:00 PM 270.625 15-Oct-07 4:20:00 PM 108.921875 15-Oct-07 3:00:00 PM 267.1875 15-Oct-07 3:00:00 PM 110.1641 15-Oct-07 3:00:00 PM 270.2344 15-Oct-07 3:00:00 PM 108.921875 15-Oct-07 1:40:00 PM 267.4219 15-Oct-07 1:40:00 PM 110.2344 15-Oct-07 1:40:00 PM 269.6875 15-Oct-07 1:40:00 PM 108.921875 15-Oct-07 12:20:00 PM 266.3281 15-Oct-07 12:20:00 PM 110.0938 15-Oct-07 12:20:00 PM 267.5 15-Oct-07 12:20:00 PM 108.94531 15-Oct-07 11:00:00 AM 266.3281 15-Oct-07 11:00:00 AM 110.375 15-Oct-07 11:00:00 AM 266.9531 15-Oct-07 11:00:00 AM 108.94531 15-Oct-07 9:40:00 AM 266.875 15-Oct-07 9:40:00 AM 110.2109 15-Oct-07 9:40:00 AM 263.6719 15-Oct-07 9:40:00 AM 108.94531 15-Oct-07 8:20:00 AM 268.5156 15-Oct-07 8:20:00 AM 110.1875 15-Oct-07 8:20:00 AM 267.5 15-Oct-07 8:20:00 AM 108.94531 15-Oct-07 7:00:00 AM 265.7813 15-Oct-07 7:00:00 AM 110.1641 15-Oct-07 7:00:00 AM 267.1875 15-Oct-07 7:00:00 AM 108.94531 15-Oct-07 5:40:00 AM 266.6406 15-Oct-07 5:40:00 AM 110.2344 15-Oct-07 5:40:00 AM 267.1875 15-Oct-07 5:40:00 AM 108.94531 15-Oct-07 4:20:00 AM 266.5625 15-Oct-07 4:20:00 AM 110.2813 15-Oct-07 4:20:00 AM 267.7344 15-Oct-07 4:20:00 AM 108.94531 15-Oct-07 3:00:00 AM 266.0156 15-Oct-07 3:00:00 AM 110.1641 15-Oct-07 3:00:00 AM 268.2813 15-Oct-07 3:00:00 AM 108.94531 15-Oct-07 1:40:00 AM 266.4844 15-Oct-07 1:40:00 AM 110.1641 15-Oct-07 1:40:00 AM 269.9219 15-Oct-07 1:40:00 AM 108,94531 15-Oct-07 12:20:00 AM 266.4844 15-Oct-07 12:20:00 AM 110.1641 16-Oct-07 12:20:00 AM 269.2969 15-Oct-07 12:20:00 AM 108.94531 14-Oct-07 11:00:00 PM 265.9375 14-Oct-07 11:00:00 PM 110.1875 14-Oct-07 11:00:00 PM 269.2969 14-Oct-07 11:00:00 PM 108.94531 14-Oct-07 9:40:00 PM 267.5781 14-Oct-07 9:40:00 PM 110.2344 14-Oct-07 9:40:00 PM 268.2031 14-Oct-07 9:40:00 PM 108.94531 14-Oct-07 8:20:00 PM 263.75 14-Oct-07 8:20:00 PM 109.7891 14-Oct-07 8:20:00 PM 267.6563 14-Oct-07 8:20:00 PM 108.94531 Page 11 of 13

Calculation PBNP-994-21-02 Rev. 0 Attachment 8.3 Unit I T-127 Unit I - T-145 Unit 2 T-127 Unit 2 - T-145 Letdown temp at regen HX outlet Letdown temp at non regen HX outlet Letdown temp at regen HX outlet Letdown temp at non regen HX outlet 14-Oct-07 7:00:00 PM 274.9219 14-Oct-07 7:00:00 PM 110.8203 14-Oct-07 7:00:00 PM 266.9531 14-Oct-07 7:00:00 PM 108.96875 14-Oct-07 5:40:00 PM 264.6094 14-Oct-07 5:40:00 PM 110.375 14-Oct-07 5:40:00 PM 267.5 14-Oct-07 5:40:00 PM 108.96875 14-Oct-07 4:20:00 PM 264.7656 14-Oct-07 4:20:00 PM 110.2613 14-Oct-07 4:20:00 PM 268.0469 14-Oct-07 4:20:00 PM 108.96875 14-Oct-07 3:00:00 PM 263.6719 14-Oct-07 3:00:00 PM 110.3281 14-Oct-07 3:00:00 PM 267.9688 14-Oct-07 3:00:00 PM 108.96875 14-Oct-07 1:40:00 PM 263.5156 14-Oct-07 1:40:00 PM 109.7422 14-Oct-07 1:40:00 PM 268.6719 14-Oct-07 1:40:00 PM 108.96875 14-Oct-07 12:20:00 PM 269.1406 14-Oct-07 12:20:00 PM 112.3203 14-Oct-07 12:20:00 PM 268.6719 14-Oct-07 12:20:00 PM 108.96875 14-Oct-07 11:00:00 AM 255,7813 14-Oct-07 11:00:00 AM 109.2031 14-Oct-07 11:00:00 AM 269.7656 14-Oct-07 11:00:00 AM 108.96875 14-Oct-07 9:40:00 AM 267.2656 14-Oct-07 9:40:00 AM 110.1641 14-Oct-07 9:40:00 AM 270.1563 14-Oct-07 9:40:00 AM 108.96875 14-Oct-07 8:20:00 AM 267.2656 14-Oct-07 8:20:00 AM 110.2109 14-Oct-07 8:20:00 AM 269.5313 14-Oct-07 8:20:00 AM 108.96875 14-Oct-07 7:00:00 AM 267.6563 14-Oct-07 7:00:00 AM 110.3984 14-Oct-07 7:00:00 AM 268.4375 14-Oct-07 7:00:00 AM 108.96875 14-Oct-07 5:40:00 AM---267:1094- Oct-07 5:40:00AM -110:4219 14-Octý07 .5:40:00-AM-267.1094i 14--Ott07 -5!40:00-AM-.10829921V 14-Oct-07 4:20:00 AM 266.3281 14-Oct-07 4:20:00 AM 110.3516 14-Oct-07 4:20:00 AM 266.5625 14-Oct-07 4:20:00 AM 108.99219 14-Oct-07 3:00:00 AM 265.7813 14-Oct-07 3:00:00 AM 109.9531 14-Oct-07 3:00:00 AM 266.5625 14-Oct-07 3:00:00 AM 108.99219 14-Oct-07 1:40:00 AM 265.7813 14-Oct-07 1:40:00 AM 109.9297 14-Oct-07 1:40:00 AM 267.1094 14-Oct-07 1:40:00 AM 108.99219 14-Oct-07 12:20:00 AM 267.9688 14-Oct-07 12:20:00 AM 110.6797 14-Oct-07 12:20:00 AM 266.5625 14-Oct-07 12:20:00 AM 108.99219 13-Oct-07 11:00:00 PM 254.7656 13-Oct-07 11:00:00 PM 110.7969 13-Oct-07 11:00:00 PM 267.3438 13-Oct-07 11:00:00 PM 108.99219 13-Oct-07 9:40:00 PM 253.6719 13-Oct-07 9:40:00 PM 109.7656 13-Oct-07 9:40:00 PM 268.4375 13-Oct-07 9:40:00 PM 108.99219 13-Oct-07 8:20:00 PM 256.1719 13-Oct-07 8:20:00 PM 110.1875 13-Oct-07 8:20:00 PM 269.6875 13-Oct-07 8:20:00 PM 109.015625 13-Oct-07 7:00:00 PM 256.7168 13-Oct-07 7:00:00 PM 110.0234 13-Oct-07 7:00:00 PM 269.7656 13-Oct-07 7:00:00 PM 109.015625 13-Oct-07 5:40:00 PM 257.8125 13-Oct-07 5:40:00 PM 110.4219 13-Oct-07 5:40:00 PM 269.7656 13-Oct-07 5:40:00 PM 109.015625 13-Oct-07 4:20:00 PM 257.1875 13-Oct-07 4:20:00 PM 115.0625 13-Oct-07 4:20:00 PM 269.7656 13-Oct-07 4:20:00 PM 109.015625 13-Oct-07 3:00:00 PM 250.7031 13-Oct-07 3:00:00 PM 111.9922 13-Oct-07 3:00:00 PM 269.7656 13-Oct-07 3:00:00 PM 109.015625 13-Oct-07 1:40:00 PM 275.4688 13-Oct-07 1:40:00 PM 110.1875 13-Oct-07 1:40:00 PM 269.7656 13-Oct-07 1:40:00 PM 109.015625

.13-Oct-07 12:20:00 PM 271.6406 13-Oct-07 12:20:00 PM 110.1406 13-Oct-07 12:20:00 PM 269.2969 13-Oct-07 12:20:00 PM 109.015625 13-Oct-07 11:00:00 AM 270.5469 13-Oct-07 11:00:00 AM 110.1641 13-Oct-07 11:00:00 AM 269.2969 13-Oct-07 11:00:00 AM 109.015625 13-Oct-07 9:40:00 AM 270.5469 13-Oct-07 9:40:00 AM 110.1875 13-Oct-07 9:40:00 AM 268.2031 13-Oct-07 9:40:00 AM 109.015625 13-Oct-07 8:20:00 AM 270.5469 13-Oct-07 8:20:00 AM 110.0703 13-Oct-07 8:20:00 AM 267.6563 13-Oct-07 8:20:00 AM 109.03906 13-Oct-07 7:00:00 AM 270.5469 13-Oct-07 7:00:00 AM 110.1875 13-Oct-07 7:00:00 AM 267.1094 13-Oct-07 7:00:00 AM 109.03906 13-Oct-07 5:40:00 AM 271.0938 13-Oct-07 5:40:00 AM 110.2109 13-Oct-07 5:40:00 AM 267.1094 13-Oct-07 5:40:00 AM 109.03906 13-Oct-07 4:20:00 AM 270.5469 13-Oct-07 4:20:00 AM 110.3984 13-Oct-07 4:20:00 AM 267.7344 13-Oct-07 4:20:00 AM 109.03906 13-Oct-07 3:00:00 AM 270.5469 13-Oct-07 3:00:00 AM 110.3047 13-Oct-07 3:00:00 AM 268.2813 13-Oct-07 3:00:00 AM 109.03906 13-Oct-07 1:40:00 AM 270.5469 13-Oct-07 1:40:00 AM 110.2578 13-Oct-07 1:40:00 AM 268.8281 13-Oct-07 1:40:00 AM 109.03906 13-Oct-07 12:20:00 AM 270.5469 13-Oct-07 12:20:00 AM 110.1875 13-Oct-07 12:20:00 AM 270.4688 13-Oct-07 12:20:00 AM 109.0625 12-Oct-07 11:00:00 PM 271.6406 12-Oct-07 11:00:00 PM 110.1641 12-Oct-07 11:00:00 PM 271.0156 12-Oct-07 11:00:00 PM 109.0625 12-Oct-07 9:40:00 PM 270.5469 12-Oct-07 9:40:00 PM 109.8594 12-Oct-07 9:40:00 PM 270.4688 12-Oct-07 9:40:00 PM 109.0625 12-Oct-07 8:20:00 PM 269.4531 12-Oct-07 8:20:00 PM 110.1641 12-Oct-07 8:20:00 PM 270.4688 12-Oct-07 8:20:00 PM 109.0625 12-Oct-07 7:00:00 PM 313.8281 12-Oct-07 7:00:00 PM 112.2031 12-Oct-07 7:00:00 PM 269.375 12-Oct-07 7:00:00 PM 109.0625 12-Oct-07 5:40:00 PM 268.2031 12-Oct-07 5:40:00 PM 110.0469 12-Oct-07 5:40:00 PM 267.2656 12-Oct-07 5:40:00 PM 109.0625 12-Oct-07 4:20:00 PM 267.5781 12-Oct-07 4:20:00 PM 110.1172 12-Oct-07 4:20:00 PM 268.3594 12-Oct-07 4:20:00 PM 109.08594 12-Oct-07 3:00:00 PM 267.0313 12-Oct-07 3:00:00 PM 110.5625 12-Oct-07 3:00:00 PM 271.0938 12-Oct-07 3:00:00 PM 109.08594 12-Oct-07 1:40:00 PM 267.0313 12-Oct-07 1:40:00 PM 110.3281 12-Oct-07 1:40:00 PM 271.6406 12-Oct-07 1:40:00 PM 109.109375 12-Oct-07 12:20:00 PM 268.125 12-Oct-07 12:20:00 PM 110.0469 12-Oct-07 12:20:00 PM 271.0938 12-Oct-07 12:20:00 PM 109.109375 12-Oct-07 11:00:00 AM 268.125 12-Oct-07 11:00:00 AM 109.9531 12-Oct-07 11:00:00 AM 270 12-Oct-07 11:00:00 AM 109.13281 12-Oct-07 9:40:00 AM 267.5781 12-Oct-07 9:40:00 AM 110.4922 12-Oct-07 9:40:00 AM 267.2656 12-Oct-07 9:40:00 AM 109.13281 12-Oct-07 8:20:00 AM 267.0313 12-Oct-07 8:20:00 AM 110.2578 12-Oct-07 8:20:00 AM 274.2188 12-Oct-07 8:20:00 AM 109.13281 12-Oct-07 7:00:00 AM 265.3906 12-Oct-07 7:00:00 AM 110.1641 12-Oct-07 7:00:00 AM 275.3125 12-Oct-07 7:00:00 AM 109.13281 12-Oct-07 5:40:00 AM 267.5781 12-Oct-07 5:40:00 AM 110.0469 12-Oct-07 5:40:00 AM 275.3125 12-Oct-07 5:40:00 AM 109.13281 12-Oct-07 4:20:00 AM 267.5781 12-Oct-07 4:20:00 AM 109.9766 12-Oct-07 4:20:00 AM 276.9531 12-Oct-07 4:20:00 AM 109.15625 12-Oct-07 3:00:00 AM 268.125 12-Oct-07 3:00:00 AM 110.0938 12-Oct-07 3:00:00 AM 277.2656 12-Oct-07 3:00:00 AM 109.15625 Page 12 of 13

Calculation PBNP-994-21 -02 Rev. 0 Attachment 8.3 Unit 1 T-127 Unit 1 - T-145 Unit 2 T-127 Unit 2 - T-145 Letdown temp at regen HX outlet Letdown temp at non regan HX outlet Letdown temp at regen HX outlet Letdown temp at non regen HX outlet 12-Oct-07 1:40:00 AM 267.9688 12-Oct-07 1:40:00 AM 110.1406 12-Oct-07 1:40:00 AM 276.3281 12-Oct-07 1:40:00 AM 109.15625 12-Oct-07 12:20:00 AM 267.4219 12-Oct-07 12:20:00 AM 110.2578 12-Oct-07 12:20:00 AM 277.4219 12-Oct-07 12:20:00 AM 109.17969 11-Oct-07 11:00:00 PM 267.4219 11-Oct-07 11:00:00 PM 110.3281 11-Oct-07 11:00:00 PM 277.9688 11 -Oct-07 11:00:00 PM 109.17969 11-Oct-07 9:40:00 PM 267.4219 11-Oct-07 9:40:00 PM 110,4219 11 -Oct-07 9:40:00 PM 277.9688 11-Oct-07 '6:40:00 PM 109.17969 11-Oct-07 8:20:00 PM 267.4219 11-Oct-07 8:20:00 PM 110.2578 11-Oct-07 8:20:00 PM 276.7969 11-Oct-07 A1:20:00 PM 109.17969 11-Oct-07 7:00:00 PM 267.4219 11-Oct-07 7:00:00 PM 110.2109 11-Oct-07 7:00:00 PM 275.7031 11-Oct-07 7:00:00 PM 109.22656 11-Oct-07 5:40:00 PM 267.3438 11-Oct-07 5:40:00 PM 110.1172 11-Oct-07 5:40:00 PM 274.375 11-Oct-07 5:40:00 PM 109.22656 11-Oct-07 4:20:00 PM 267.0313 11-Oct-07 4:20:00 PM 110.1406 11 -Oct-07 4:20:00 PM 275.8594 11-Oct-07 4:20:00 PM 109.27344 11-Oct-07 3:00:00 PM 267.0313 11-Oct-07 3:00:00 PM 110.0703 11-Oct-07 3:00:00 PM 276.4063 11-Oct-07 3:00:00 PM 109.296875 11-Oct-07 1:40:00 PM 267.0313 11-Oct-07 1:40:00 PM 110.0703 11-Oct-07 1:40:00 PM 277.5 11-Oct-07 1:40:00 PM 109.32031 268.125- 1-l' t ý0- 12-20:OO-PM -111265625-11-Oct-07 "12:20:00 PM 11-0ot:07 12W20:00-PM '-02578 11 -Oct:07- -2:20:00-PM- -278.0469 11-Oct-07 11:00:00 AM 273.5156 11-Oct-07 11:00:00 AM 111.2891 11-Oct-07 11:00:00 AM 278.2031 11-Oct-07 11:00:00 AM 111.33594 Average 267.221 110.1695 261.3068 108.753516 Maximum 275.4688 115.0625 278.2031 111.33594 Page 13of13

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