Text

Response to Request for Additional Information (RAI) Regarding Alternative Source Tear (AST) License Amendment Request (LAR) 196
	ML101090027
Person / Time
Site:	Turkey Point
Issue date:	04/14/2010
From:	Kiley M; Florida Power & Light Co
To:	; Document Control Desk, Office of Nuclear Reactor Regulation
References
	L-2010-065, TAC ME1624, TAC ME1625
	Download: ML101090027 (58)
	v • d • e

APR 1-4 2010 FPL. L-2010-065 POWERING TODAY. 10 CFR 50.90 EMPOWERING TOMORROW.@

U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D. C. 20555-0001 Re: Turkey Point Units 3 and 4 Docket Nos. 50-250 and 50-251 Response to Request for Additional Information (RAI) Regarding Alternative Source Term (AST) License Amendment Request (LAR) 196 (TAC NOS.

ME 1624 and ME1625)

References:

(1) W. Jefferson (FPL) to U.S. Nuclear Regulatory Commission (L-2009-133),

"License Amendment Request 196: Alternative Source Term and Conforming Amendment," Accession No. ML092050277, June 25, 2009.

(2) J. Paige (NRC) to M. Nazar, "Turkey Point Units 3 and 4 - Request for Additional Information Regarding Request to Adopt Alternate Source Term (TAC Nos.

ME 1624 and ME1625)," Accession No. ML100700446, March 24, 2010 By letter L-2009-133 dated June 25, 2009 [Reference 1], Florida Power and Light (FPL) requested to amend Facility Operating Licenses DPR-31 and DPR-41 and revise the Turkey Point Units 3 and 4 Technical Specifications (TS). The proposed amendments revise the TS to adopt the alternative source term (AST) as allowed in 10 CFR 50.67.

Additional information was requested by the NRC staff by letter dated March 24, 2010

[Reference 2]. The attachment to this letter provides the FPL response to the questions from the NRC staff.

In accordance with 10 CFR 50.91(b)(1), a copy of this letter is being forwarded to the State Designee of Florida.

This submittal does not alter the significant hazards consideration or the environmental assessment previously submitted by FPL letter L-2009-133 [Reference 1].

This letter contains no new commitments and no revisions to existing commitments.

A supplement to this response will be provided no later than May 2 1st containing revised offsite radiological dose consequences and proposed changes to TS 3/4.7.5 on the Control Room Emergency Ventilation System (CREVS).

Should you have any questions regarding this submittal, please contact Mr. Robert J.

Tomonto, Licensing Manager, at (305) 246-7327.

an FPL Group company

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Page 2 of 2 I declare under penalty of perjury that the foregoing is true and correct.

Executed on April ,2010.

Very truly yours, Michael Kiley Site Vice President Turkey Point Nuclear Plant Attachment cc: USNRC Regional Administrator, Region II USNRC Project Manager, Turkey Point Nuclear Plant USNRC Resident Inspector, Turkey Point Nuclear Plant Mr. W. A. Passetti, Florida Department of Health

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 1 of 56 Attachment Response to 03/24/20 10 Request for Additional Information (RAI) Regarding Alternative Source Term (AST)

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 2 of 56 Response to 03/24/2010 RAI on AST Methodology Response to Request for Additional Information The following information is provided by Florida Power & Light (FPL) in response to the U. S.

Nuclear Regulatory Commission's (NRC) Request for Additional Information (RAI). This information was requested to support License Amendment Request (LAR) 196, Alternative Source Term (AST) and Conforming Amendment, for Turkey Point Nuclear Plant (PTN) Units 3 and 4 that was submitted to the NRC by FPL via letter (L-2009-133) dated June 25, 2009 [Reference 1].

In a letter dated March 24, 2010 [Reference 2], the NRC staff requested additional information regarding FPL's request to adopt the Alternate Source Term. The questions consisted of twenty (20) RAIs from the Accident Dose, Containment, and Ventilation Branches on AST LAR 196.

Each of the twenty (20) questions is documented below with the applicable FPL response.

1. The AST LAR Enclosure 1, Section 10.0, References, Reference 6 cites NEI 99-03, Control Room HabitabilityGuidance, NuclearEnergy Institute, Revision 0, June 2001 and Revision 1, March 2003. NEI 99-03, Revision 0, June 2001 is an acceptable reference, however, Revision 1 has not been reviewed and accepted by the Nuclear Regulatory Commission (NRC).

Provide additionalinformation describing whether or not NEI 99-03, Revision 1 is being relied upon to support the assumptions or methods used in the AST submittal If NEI 99-03 Revision I is being used to support the AST submittal, it will be necessary to submit NEI 99-03 Revision 1 on the docket with a requestfor staff review. In addition, the licensee will be responsiblefor addressing questions that may resultfrom that review and the review will have to be completed before the staff completes its review of the AST submittal. If NEI 99-03 Revision I is not being relied upon to support the AST submittal and it is not the licensee's intentionfor the staff to review it, then it should be removed from the AST submittalas a reference.

The references to NEI 99-03, Control Room Habitability Guidance, provided in the LAR submittal are made in the context of background information on relevant AST implementation requirements and both current regulatory and industry guidance that include:

10 CFR 50.67, Accident Source Term; NRC Regulatory Guide (RG) 1.183, Alternative Radiological Source Terms for Evaluating Design Basis Accidents at Nuclear Power Reactors; Regulatory Issue Summary (RIS) 2006-04, Experience with Implementation of Alternative Source Terms; and Generic Letter (GL) 2003-01, Control Room Habitability.

NEI 99-03 is specifically discussed in conjunction with GL 2003-01 issues resolution and is not relied upon to support the assumptions or methods used in the AST submittal. Therefore, it is not FPL's intention for the staff to review NEI 99-03, Rev 1.

2. On page 18 of 81 of NumericalApplications,Inc. (NAI)-1396-045 Rev 1, the second paragraphunder item 5 states thefollowing:

"The GOTHIC analysis utilizedfor Turkey Pointto demonstrate the level of spray induced mixing in containmentincluded both subdivided and lumped parametermodels. The detailed subdivided models were used to calculateflow patternsproduced by the containment sprays and the emergency containment

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 3 of 56 Response to 03/24/2010 RAI on AST Methodology coolers. Gas concentrationsfrom the subdivided models were compared with concentrationsin the lumped parametermodel and used to determine equivalent mixing flow ratesfor the lumped model."

Provide thefollowing additionalinformation:

a. Describe how many subdivided models were analyzed using GOTHIC, and the differences among each of the subdivided models.

Six different cases were considered for the final analyses as shown in the table below.

The geometry and noding were the same for all six cases.

Case No. Description of Operating Equipment I Sprays, two ECC's (25,000 cfin) and two ECF's (37,500 cfmi) 2 Sprays and two ECC's (25,000 cfm) 3 Sprays and one ECC (25,000 cfm) 4 Sprays and one ECC (24,330 cfm) 5 No Sprays and two ECC's (24,330 cfm) 6 No Sprays and one ECC (24,330 cfm)

ECC and ECF refer to Emergency Containment Coolers and Emergency Containment Filter fans, respectively.

b. Provide a tabulationof the results (gas concentrations,flow rates)showing the differences within the subdivided models analyzed and show the comparison with resultsfrom the lumped parametermodel.

The intercompartmental flow rates in the lumped model needed to produce mixing equivalent to that calculated in the subdivided model for the six cases are shown below.

Please see the response to Part c for a discussion on the lumped model flow rates and typical concentration transients.

Unsprayed Upper Lower to Upper Unsprayed to Case Description of Operating Mixing Rate Sprayed Mixing No. Equipment (cfm) Rate (cfm) 1 Sprays, two ECC's (25,000 cfm) and 320,000 2,200,000 two ECF's (37,500 cfm) 320,000_,200,00 2 Sprays and two ECC's (25,000 cfm) 375,000 1,300,000 3 Sprays and one ECC (25,000 cfm) 375,000 1,000,000 4 Sprays and one ECC (24,330 cfm) 375,000 990,000 5 No Sprays and two ECC's (24,330 46,500 450,000 cfm) 6 No Sprays and one ECC (24,330 cffm) 24,000 250,000

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 4 of 56 Response to 03/24/2010 RAT on AST Methodology

c. Describehow the equivalent mixingflow ratesfor the lumped model were determined.

A three volume lumped model was constructed that includes the lower containment unsprayed region, the upper containment unsprayed region and the upper containment sprayed region. The volumes were interconnected by flow paths as shown in the following figure.

I-02Q Upper Upper Containment Containment Unsprayed Sprayed I

L J 1Q Fm q -

T Lower Containment

_ Unsprayed The lower containment region was initialized with a tracer gas at a concentration of 93.5 percent. The remaining 6.5 percent was steam. The upper containment regions initially contained no tracer gas. The tracer gas was given properties that were identical to the air in the upper containment to avoid introducing any buoyancy forces that might affect the mixing.

The fan flows in the lumped model were adjusted so that the tracer concentration in each of the 3 lumped volumes approximately matched the volume average gas concentrations in each of the three equivalent regions in a subdivided model after two minutes of operation. Typical results for the concentration transient are shown in the following figure.

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 5 of 56 Response to 03/24/2010 RAI on AST Methodology Subdivided/Lum ped Model Com parison with ECC & ECF Fans E

(D 1U L_ 0.4 -*

0 0.2-,

M- o 0 20 40 60 80 100 120 140 Time (sec)

LLU, LUU and LUS refer to Lumped model-Lower containment Unsprayed, Lumped model-Upper containment Unsprayed and Lumped model-Upper containment Sprayed, respectively. SLU, SUU and SUS similarly refer to corresponding regions in the subdivided model. It is evident from this graph that the mixing rate near the beginning of the run, indicated by the slopes of the concentration curves, is not as high in the subdivided model as it is in the lumped parameter model. This is because it takes a finite amount of time for the flow patterns to be established in the subdivided model. In the lumped parameter model, on the other hand, the fans are brought to full flow almost instantaneously and perfect mixing is assumed in each lumped volume. By the end of the run, mixing rates in the subdivided model have increased beyond the constant values used in the lumped parameter model, resulting in identical concentrations at that point in the transient. Matching the subdivided and lumped parameter model concentrations in this way resulted in a conservative estimate of the effective mixing rates calculated by the subdivided model.

It should also be noted that prior GOTHIC results compared favorably with the results of NUREG/CR-4102, "Air Currents Driven By Sprays in Reactor Containment Buildings."

These GOTHIC results indicated that the GOTHIC spray induced velocities were conservatively slightly lower than those from NUREG/CR-4102 with a GOTHIC peak velocity of 16 ft/sec versus a reported NUREG peak velocity of 21 ft/sec (6.5 m/sec) for lower spray flux cases.

d. Describethe relationshipbetween the equivalent mixing flow rates that were determinedfor the lumped model with the mixing flow rates in the subdivided models.

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 6 of 56 Response to 03/24/2010 RAI on AST Methodology The mixing flow rates in the lumped model were specified by the input for the volumetric fans. The equivalent mixing flow rates in the -2,000 cell subdivided model are calculated by GOTHIC and include the combined effects of the actual system fans, spray induced circulation and turbulent diffusion. Each of the lumped model flow paths represents the flow through about 50 to 100 cell faces.

3. Provide additionalinformation to insure that the cooldown times assumed in the main steam line break (MSLB), the steam generatortube rupture (SGTR), locked rotor (LRA) and rod cluster control assembly (RCCA) ejection accidentanalyses can be achieved by exclusive reliance on safety grade equipment.

The current licensing and design basis for Turkey Point credits the safety-related Main Steam Safety Valves (MSSVs) in response to these design basis accidents in order to prevent overpressurization. The control room operators utilize the safety-related Atmospheric Dump Valves (ADVs) to depressurize and cool down the reactor coolant system (RCS) to the residual heat removal (RHR) cut-in temperature and pressure. These ADVs are safety-related but their upgraded digital controls, e.g., handswitches and controllers, are quality-related since the components support control functions, including safe shutdown. The valves are provided with two redundant air sources; instrument air and a backup nitrogen gas system. The nitrogen system serves as an alternate power source to the ADVs in the event of loss of all A.C. power. Furthermore, for additional defense in depth considerations, operators may operate the valves by installing a temporary gas supply. There are many instances of established licensing precedence for cooling down on non-safety related valves. For example, the NRC has approved D.C. Cook, similar to Turkey Point's design, to use non-safety related equipment without considering a single failure to analyze the margin to overfill accident for their intact steam generators (Reference 4).

Note that for analytical considerations, the time to place RHR in service was conservatively assumed to be 63 hours7.291667e-4 days 0.0175 hours 1.041667e-4 weeks 2.39715e-5 months . Further analysis has since determined that it will actually only take 25.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months .

4. Foreach of the affected accident analyses,MSLB, SGTR, LRA andRCCA [ejection],

provide additionalinformation to describe the basisfor the determinationof the potential for 30 minutes of steam generatortube bundle uncovery and a description of the actions requiredto recover the bundles.

Steam generator tube bundle uncovery was considered for the intact steam generators. The Turkey Point Units 3 and 4 operating history from rapid power transients from 100% to 0%

indicates that 30 minutes may be assumed as a conservatively long tube uncovery period. It shows that following unplanned reactor trips from 100% power, steam generator level can drop (i.e. shrink) below the indicating range of the narrow range level instrument for several minutes. Since the relative height of the lower level tap for the narrow range instruments is located just above the top of the tube bundle, any indicated level on the steam generator narrow range level instrumentation indicates that the steam generator tubes are covered.

Data collected for several of these events includes the steam generator narrow range level

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 7 of 56 Response to 03/24/2010 RAI on AST Methodology profile. In each of these cases, level is restored to the indicating range in under 10 minutes.

For this reason, an assumed value of 30 minutes to tube recovery is considered to be an acceptably bounding value. Furthermore, auxiliary feedwater automatically initiates to maintain steam generator level.

5. For thefuel handling accident,gapfractionsfrom NUREG/CR-5009 were used, which are approximately twice those of RG 1.183 to accountfor high burn-upfuel not meeting the limits described in Footnote 11. In addition, the gapfractionsfrom Table 3 of RG 1.183 were used without the use of any stated correctionfactors in the evaluation of the LRA and RCCA ejection accidentanalyses.

Provide additionalinformation, including the basis, describing whether or not correction factors were used to adjust the gapfractionsfrom Table 3 ofRG 1.183 to accountfor high burn-upfuel in the LRA and the RCCA ejection accidentanalyses.

For the RCCA Ejection accident, the fraction of the core inventory assumed to be in the fuel rod gap are those event-specific source term requirements listed in Appendix H of RG 1.183.

The fuel rod gap fractions from Table 3 of RG 1.183 were not used for the RCCA Ejection accident analysis. As a result, Footnote 11 from Table 3 of RG 1.183 is not applicable.

For the Locked Rotor accident, the fuel rod gap fractions from Table 3 of RG 1.183 were assumed. Footnote 11 from Table 3 of RG 1.183 states the following:

"The release fractions listed here have been determined to be acceptable for use with currently approved LWR fuel with a peak burnup up to 62,000 MWD/MTU provided that the maximum linear heat generation rate does not exceed 6.3 kw/ft peak rod average power for burnups exceeding 54 GWD/MTU. As an alternative, fission gas release calculations performed using NRC approved methodologies may be considered on a case-by-case basis. To be acceptable, these calculations must use a projected power history that will bound the limiting projected plant-specific power history for the specific fuel load. For the BWR rod drop accident and the PWR rod ejection accident, the gap fractions are assumed to be 10% for iodines and noble gases."

The Locked Rotor accident analysis assumes that 15% of the fuel rods fail due to DNB for the purposes of determining the dose consequences for this event. Only the highest powered rods are susceptible to reaching the DNB limit for the Locked Rotor accident. It is expected that rods with a burnup greater than 54 GWD/MTU would not be capable of exceeding the DNB limit during the Locked Rotor accident. The fraction of rods in the core reaching the DNB limit in the Locked Rotor accident is assessed for each reload cycle. As part of the reload analysis it is confirmed that rods exceeding the DNB limit for the Locked Rotor accident do not have a rod average linear heat generation rate greater than 6.3 kw/ft if the rod has a burnup greater than 54 GWD/MTU.

6. LAR Attachment 3, NAI-1396-045 Rev. 1, Table 1.6.3-1 lists the unfilteredmake-up flow rate and inleakage as 1000 cfm during the normalmode of operation. For the waste gas

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 8 of 56 Response to 03/24/2010 RAI on AST Methodology decay tank rupture, Table 2.7.1 lists the unfiltered inleakage as 115 cfm and the makeup flow rate as 1000 cfm for the non-isolatedcontrol room implying that the total air exchange would be calculatedusing 1115 cfm.

Provide additionalinformation to clarify the assumed total air exchange ratefor the control room during normal operation.

All Turkey Point AST events were evaluated with 1000 cfm normal makeup flow rate in addition to 115 cfm assumed unfiltered inleakage. The exhaust flow/total air exchange for these conditions would be, as the NRC question states, 1115 cfm. A replacement Table 1.6.3-1 is provided below to remove the confusing reference to "and inleakage" and add a clarifying entry for Normal Operation Unfiltered Inleakage.

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 9 of 56 Response to 03/24/2010 RAI on AST Methodology Replacement Table 1.6.3-1 Control Room Ventilation System Parameters Parameter Value Control Room Volume 47,786 ft3 Normal Operation Filtered Make-up 0 cfm Flow Rate Filtered Recirculation 0 cfm Flow Rate Unfiltered Make-up 1000 cfm Flow Rate Unfiltered Inleakage 115 cfm Emergency Operation Recirculation Mode:

Filtered Make-up 525 cfm Flow Rate Filtered Recirculation 375 cfm Flow Rate 375_cfm Unfiltered Make-up 0 cfm Flow Rate Unfiltered Inleakage 115 cfm Filter Efficiencies Elemental J 97.5%

Organic 97.5%

Particulate 97.5%

7. TS bases section 3/4.4.5, Applicable Safety Analysis, states that," No creditfor iodine removal is taken for any steam releasedto the condenserprior to reactortrip and concurrentloss of offsite power." This statement appearsto be in conflict with the revised AST analyses crediting a partitionfactor of 100 for releases through the condenserprior to reactortrip.

Provide additionalinformation to clarify whether or not the revisedAST analyses credit a partitionfactor of 100 for releasesthrough the condenserprior to reactortrip.

The revised AST analysis submitted in support of the Steam Generator Tube Rupture event does credit a partition factor of 100 for releases through the condenser prior to reactor trip.

The Technical Specification (TS) Bases Section 3/4.4.5 has been corrected as shown in Figure 2 to clarify this change.

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 10 of 56 Response to 03/24/2010 RAI on AST Methodology

8. The licensee has proposed TS changes to revise limiting condition of operation (LCO) 3.4.8, "RCS [Reactor Coolant System] Specific Activity, "APPLICABILITY requirements to specify that the LCO is applicablein MODES 1, 2, 3, and 4 removing MODE 5 from the APPLICABILITY. The licensee asserts and the NRC staff agrees that:

"In MODE 5 with the RCS loopsfilled, the SGs [steam generators]are specifled as a backup means of decay heat removal via naturalcirculation. In this mode, however, due to the reduced temperature of the RCS, the probabilityof a design basis accident[DBA] involving the release of significant quantities of RCS inventory is greatly reduced. Therefore, monitoringof RCS specific activity is not required. In MODE 5 with the RCS loops notfilled, the SGs are not usedfor decay heat removal; the RCS and SGs are depressurizedandprimary to secondary leakage is minimal. Therefore, the monitoring of RCS specific activity is not required. The change to modify the TS 3.4.8 Applicability to include only MODES 1 through 4 retainsthe necessary constraintsto limit the potential radiologicalconsequences of a SGTR or MSLB that may occur during these MODES and is therefore acceptablefrom a radiologicaldose perspective.""

The cited discussionprovides the basisfor not requiringthe monitoring of RCS specific activity in MODE 5; however the implication is that the monitoring of RCS specific activity is requiredin MODES 1 though 4. The NRC staffnotes that the TS Table 4.4-4 specifies that the sample and analyses requiredto demonstrate compliance with LCO 3.4.8 are only requiredto be performed in MODE 1. After transientconditions (i.e. reactortrip, plant depressurization,shutdown or startup)that end in MODES 2, 3, or 4, the surveillance is not requiredto be performed. Isotopic spiking andfuel failures are more likely during transientconditions than during steady state plant operations.

Provide additionalinformation tojustify why there is an apparentdisparity between the modes of applicability (MODES1, 2, 3, and 4) and the limited mode (MODE1) under which the surveillancefor TS 3.4.8 is required.

The TS 3.4.8 surveillance requirement (SR) is consistent with that previously approved for TSTF-490 implementation by the NRC for Millstone 2 and 3 via Amendments 307 and 246 on October 27, 2008. In its SER, the NRC determined that "SR 4.4.8 is modified by inclusion of a NOTE which states, 'Only required to be performed in MODE 1.' This NOTE modifies the SR to permit entry into the applicable MODE(s) while relying on the Actions.

This allowance is acceptable due to the significant conservatism incorporated into the specific activity limit, the low probability of an event which is limiting due to exceeding this limit, and the ability to restore transient specific activity excursions while the plant remains at, or proceeds to power operation. This allows entry into MODE 2 through 4 prior to performing the surveillance. This allows the surveillance to be performed in any of those MODEs, prior to entering MODE 1, which is the same as evaluated in the approved TSTF."

9. LAR Attachment 3, NAI-1396-045 Rev. 1, Table 1. 7.2-1 does not contain valuesfor Xe-135m or Xe-138 which are neededfor staff verification of the proposedlimiting value of DEX-133.

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 11 of 56 Response to 03/24/2010 RAI on AST Methodology Provide additionalinformation documenting the values used to support the proposed limiting value of DEX-133 as well as the basisfor their selection.

The Primary Coolant Source Term presented in Table 1.7.2-1 was derived from the equilibrium RCS specific activity based upon 1% fuel cladding defects. These RCS equilibrium activities are adjusted by a factor which forces the RCS activity to match the current Turkey Point TS definitions of 100/E-Bar. This factor was 0.9579, indicating that the equilibrium, 1% fuel failure based prediction would be slightly higher than the allowable maximum specified equivalent of 100/E-Bar. The current AST definition of "E-bar, Average Disintegration Energy," in Section 1.13 of the Turkey Point Technical Specifications is:

"E shall be the average (weighted in proportionto the concentration of each radionuclidein the reactorcoolantat the time of sampling) of the sum of the average beta andgamma energiesper disintegration(Me V/d) for the radionuclides in the sample isotopes, other than iodines, with halflives greaterthan 30 minutes, making up at least 95 percent of the total non-iodine activity in the coolant."

Using the definition above, the 30 minute half-life exclusion of nuclides was used as the basis for eliminating the Xe-135m and Xe-138 from inclusion in the primary coolant inventory presented in Table 1.7.2. However these isotopes were used in the determination of the proposed DE Xe-133 limit as shown in the table below.

1*% Defects 1% Defects Effective Adjusted DCFi Activity x Equilibrium Scaling Activity EPA FGR 12 Atvt Isotope RCS Activity Factor Activit TAble 12 DCF 0a~igm)(PCi/gm) Table 111.1 (Pci/gm)(Sv/Bq)

Kr-85m 1.188E+00 0.9579 1.138E+00 7.480E-15 8.512E-15 Kr-85 3.486E+01 0.9579 3.340E+01 1.190E-16 3.974E-15 Kr-87 7.157E-01 0.9579 6.856E-01 4.120E-14 2.825E-14 Kr-88 2.113E+00 0.9579 2.024E+00 1.020E-13 2.065E-13 Xe-131m 2.849E+00 0.9579 2.729E+00 3.890E-16 1.062E- 15 Xe-133m 3.275E+00 0.9579 3.138E+00 1.370E-15 4.298E- 15 Xe-133 2.360E+02 0.9579 2.260E+02 1.560E-15 3.527E-13

_____ii 4.570E-01 0.9579 4.378E-01 2.040E-14 8.930E-15 Xe-135 5.080E+00 0.9579 4.866E+00 1.190E-14 5.791E-14 X~43~ 4.766E-01 0.9579 4.565E-01 5.770E-14 2.634E-14 Total 6.984E-13 DE Xe-133 = 6.984E-13 / 1.560E-15 447.7 pCi/gm

10. What are the heights above ground of all wind direction, wind speed and temperature difference measurements used in the analysis to support the June 25, 2009 AST LAR.

Page15 of Attachment 3 to the LAR states that wind speeds are measured at a height of

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 12 of 56 Response to 03/24/2010 RAI on AST Methodology 11.58 meters above ground. Page 16 cites a 10 meter wind speed. Were all measurements made on a single tower and the reference to 10 meters is simply a convenient approximationto data measured at 11.58 meters (m)? NRC staff noted a relatively lower occurrence of winds from the north northeastdirection thanfrom the north and easterly directions between 2003 and 2007. To what may this be attributed?Provide a drawing or provide a reference to an existing docketed drawing which shows the location of the Turkey Pointmeteorologicaltower(s) with respect to plantstructures and site features.

Based on field measurements performed on September 18, 2002, the height from the bottom of the concrete pad to the height of the wind direction and speed sensors is 38 ft, or 11.58 meters. The measured height from the bottom of the concrete pad to the height of the temperature sensors is 34 ft, or 10.36 meters. All measurements were made on a single tower, and the reference to "10 meters" is simply a convenient approximation of the more precise measurements.

The 10 meter meteorological data for the time period between 2003 and 2007 shows a relatively low occurrence of winds from the north northeast direction compared to that from the northern or easterly directions. It has been determined that this wind pattern is correct and reflects actual meteorological conditions. Comparison of 10 meter and 60 meter wind direction data from the South Dade meteorological tower correlated well as did comparison with the 10 meter data from the Land Utilization meteorological tower. Comparison with wind direction data from the Miami International Airport yielded similar results and substantiated this observed wind pattern. See Figure 1 for an aerial view of the South Dade and Land Utilization Meteorological Tower locations relative to the site.

11. Provide additionalinformation describinghow the Turkey Point2003 through 2007 meteorologicaldata were measured,processed,and selected to ensure that the data were appropriatefor input into the ARCON96 and PA VAN computer codes. During the 5-year period,highlight any changes in the way in which the data were measured,processed,or selectedfor inclusion in the files and discuss why the changes were made. Identify each resultanttemporal subset that comprises a homogeneous measurement,process, or selection grouping.

The meteorological data is collected and transmitted to a meteorological services contractor for processing through a RG 1.23, Meteorological Monitoring Programs for Nuclear Power Plants, compliant computer program. The program runs the data through a series of quality checks that identifies and tags invalid data. It generates monthly error reports, data summary output files, and joint frequency distributions (JFDs) that are compiled into quarterly meteorological reports and also atmospheric dispersion factors (X/Qs) that are included only in the annual meteorological reports. Data that fails the quality checks is set to missing (shown as MISG in output files), set to 0, or simply flagged on the data summary output listings. Although the South Dade 60 meter meteorological tower is the primary collection point for the meteorological data, the Land Utilization 10 meter meteorological tower acts as an available backup for the 10 meter wind speed, wind direction, and sigma theta (wind direction standard deviation) measurements. The data has, in some cases, been manually substituted using this backup data if a considerable amount of invalid data is present. Data

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 13 of 56 Response to 03/24/2010 RAI on AST Methodology substitutions are limited in actual practice and have historically been done when large quantities of data might otherwise have been invalidated. Data substitutions were made in the first six months of 2005 (days 1-180) in which the South Dade 60 meter channel B temperature sensor data was substituted for the channel A temperature sensor data and in the first three months of 2006 (days 1-85) in which the South Dade 10 meter channel B temperature sensor data was substituted for the channel A temperature sensor data. Data substitutions were also made for the South Dade meteorological tower lower wind speed (LWS), lower wind direction (LWD), and sigma theta data from the Land Utilization (LU) 10 meter meteorological tower on approximately 43 occasions between August 6, 2007 and October 24, 2007. See the discussion at the end of item "11 .b" below for further details regarding this latter substitution.

Thefollowing specific areasshould be addressedfurther.

a. FPL providedtwo sets of ARCON96 hourly meteorologicaldatafiles for 2005 and 2006. Files were sent by letter datedJuly 21, 2009 (e-mail confirmation of receipt datedMarch 8, 2010, ADAMS Accession No. ML100680672) as part of the current LAR. In addition,filesfor the same 2-yearperiod were subsequently submitted as part of another,unrelated,LAR by letter datedAugust 7, 2009 (ML092250585).

There appearsto be some differences between the two sets offiles for the 2005 and 2006 data. Clarify the basisfor the apparentdifferences, which are particularly apparentwith respect to the atmosphericstability categorization. Are both sets of data measuredat the same location and categorizedby temperature difference with height measurements only? In addition, the dataprovidedby letter datedAugust 7, 2009, were for 2002, 2005, and 2006, while the data providedpreviously by letter dated July 21, 2009,for the currentLAR isfor the period 2003 through 2007.

Providejustificationthat the 2003 through 2007 data are appropriatefor use in the currentLAR.

Both data sets used the same hourly data measured at the South Dade 60 meter meteorological tower. The atmospheric stability categories were based on the vertical temperature difference (AT) between the 60 meter and 10 meter measurement levels.

Further review indicates that the observed differences in the 2005 and 2006 meteorological data are primarily attributable to differences in processing and formatting of the data prior to submittal of each set of data. The AST data submitted on July 21, 2009 was only modified to remove identified invalid data while the PTN Unit 6 and 7 Combined Operating License Application (COLA) data submitted on August 7, 2009 was supplemented, when invalid data was found, with representative data from other recognized area meteorological sources, e.g., Miami International Airport, in order to optimize the data sets. The two data sets also used different wind speed categories. The AST data used seven wind speed categories (bins) provided in the PTN quarterly meteorological reports while the COLA data used thirteen wind speed categories more in line with the RIS 2006-04 recommendations. In addition, the AST submittal required five years of meteorological data for which the most recent five year period was chosen to be most representative while the COLA submittal required only three years of data and selected those years with the best data

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 14 of 56 Response to 03/24/2010 RAI on AST Methodology quality.

b. While the yearly data recovery rate by parameteris generally above 90 percent as recommended by RG 1.23, Rev. 0, "Onsite MeteorologicalPrograms," the recovery rate in 2007for the upper level wind direction appearsto be in the upper 60 percentile. Discuss the impact of this lower recovery rate on calculationof the atmosphericdispersionfactors (Z/Q values).

The lower recovery rate observed for the upper wind speeds in 2007 was attributed to an instrumentation problem that occurred after the replacement of the South Dade 60 meter meteorological tower data recorders. The recorded wind direction was reported to have periodically fixed in one direction from early August through late October 2007. In those instances where this occurred, the wind speed, wind direction, and sigma theta (wind direction standard deviation) from the Land Utilization 10 meter met tower were manually substituted for the South Dade meteorological tower lower wind (10 meter) data. However, there was no substitute data available for the upper wind (60 meter) data.

Regarding the impact of the lower recovery rate on the accuracy of the overall site x/Q results, Section 5 of RG 1.23 states:

Meteorological instruments should be inspected and serviced at afrequency that will ensure data recovery of at least 90 percent on an annual basis. The 90-percent rate applies to the composite ofall variables (e.g., the joint frequency distributionof wind speed, wind direction,stabilityclass) needed to model atmospheric dispersionfor each potentialreleasepathway. In addition, the 90-percentrate applies individually to the other meteorological parameters.

RG 1.23 provides guidance for performance targets for the meteorological monitoring program to support a wide range of power plant applications. Many of these applications involve annual basis reporting and monitoring, which support the above cited guidance that met tower data recovery rates should be related to an annual basis.

For design basis onsite and offsite accident dose consequence evaluations, however, consideration of longer time periods (for instance, 5 years as described in RG 1.194, Section 3.1) of met tower data are appropriate to ensure that representative X/Qs are developed which include the effects of any long term trends. With a significantly larger population of met tower readings, the impact of low recovery rates on individual sensors during any given annual time interval will be minimized.

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 15 of 56 Response to 03/24/2010 RAI on AST Methodology Per review of the ARCON96 source listing (CCC-664 - ORNL RSICC Code Documentation Package, and NUREG/CR-6331, Rev 1 Atmospheric Relative Concentrations in Building Wakes) hourly data will be retained in the internal ARCON96 calculations if at least one valid pair of wind speed/direction exists, AND the stability class exists. This processing in ARCON96 is done in subroutine XOQCALC5. Thus, if the met tower data report data for a particular hourly reading contained valid data for stability class, and valid data for at least one pair (upper or lower) of wind speed/direction sensor readings, then the raw data would be processed as valid data by ARCON96 in accordance with its internal hardwired routines.

The Turkey Point AST evaluation ARCON96 output files report that 43824 hourly readings were evaluated in the composite 2003-2007 hourly data file input, with 1113 hours0.0129 days 0.309 hours 0.00184 weeks 4.234965e-4 months of "Missing Data." Again, by examination of the XOQCALC5 subroutine, the variable MISS XOQ is incremented only for those cases where stability class is missing or for those hourly readings where no valid upper or lower wind speed/direction pair is available. In order to determine the number of hours for 2007 that ARCON96 tallied as bad or missing data, ARCON96 was rerun for a selected case (case tpO1) with ONLY 2007 hourly meteorological data input.

Even though the recovery rate for the upper wind direction variable may have been only in the 60% range for 2007, the ARCON96 MISS XOQ count of total "missing" or invalid hourly entries for the 2007 calendar year data file was only 249.

Considering only these 249 missing data entries which occurred in 2007, the effective recovery rate is about 97.2%, which is above the 90% recovery rate recommended in RG 1.23 for the "composite of all variables.. .needed to evaluate atmospheric dispersion factors" for Turkey Point.

The missing 5 year total of 1113 hourly readings is approximately 2.5% of the total number of hourly readings considered for the 5 year time period 2002-2007. This is definitely within the <10% criteria for the composite of all variables needed to determine valid x/Q's for the entire 2003-2007 time period. This 2.5% "missing data" rate is comparable to 2007's 2.8% "missing data" rate, so there is no overall indication that the 2007 data is not suitable for inclusion in the determination of the X/Q values to support the Turkey Point AST submittal.

Therefore, the impact of the low recovery rate of the upper wind direction sensor readings in 2007 has little impact on the overall results of ARCON96 and other x/Q calculations which support the PTN AST dose analyses.

c. The occurrence of atmosphericstability category A in 2004 appearsto be approximately22.5 percent and in thefollowing year, 2005, approximately4.5 percent. Duringthe other three years, the value ranged between about 6 and 9 percent. To what is this variability attributed?

The 2004 meteorological data experienced recurring problems with ambient temperature measurements. During the first six months of 2004, measured

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 16 of 56 Response to 03/24/2010 RAI on AST Methodology temperatures variations at both the 60 meter and 10 meter sensor elevations resulted in a much higher incidence of instability than is normally observed. The temperature sensors at both elevations were replaced in mid June 2004 and the observed instability in the data was significantly reduced. Note that the measured vertical temperature difference between the 10 meter and 60 meter readings is a primary determining factor for assignment of data to a given atmospheric stability category.

12. Provide one or more scaledfigures with allpostulatedsources and receptors highlighted from which distance and direction inputs can be approximated. Provide the scale of the figure. Explain whether distance inputs into the ARCON96 calculations were directly estimated as horizontalstraightline distances. If the distances were not estimated directly as straightline horizontaldistances, explain how they were determined. Did the procedure used to estimate the distancesfactor in differences in heights between each source and receptorpair? Were any sources modeled as diffuse releases?

All distances were determined as straight line, horizontal distances. Elevation differences were handled as separate inputs to the ARCON96 code for Release and Receptor (Intake)

Heights. See Table 2 and the response to the Requests for Additional Information (RAI) # 13 below. All ARCON96 X/Q's were determined assuming a point release from the identified source. Scaled figures with all postulated release and receptor points are not available; however, the site location coordinates for all release and receptor points, the N/S and E/W components, and the straight line distance between each release-receptor pair are provided in Table 1 of this response. This information confirms the distances and directions from the release points to the current air intake locations that were provided on pages 5-11 of Attachment 2 to PTN-ENG-SENS-02-052, R2 containing the meteorological data submitted to the NRC via an enclosure to L-2009-163 on July 21, 2009 and augments the information for the new emergency air intakes. The locations of the proposed northeast and southeast emergency air intakes were provided in Figure 1 (Sketch SK-051638-M-001) of Attachment 5 to PTN-ENG-SENS-02-052, R2 (L-2009-163) and in Figure 1 of FPL's response (L-2010-021) to RAls on the AST related modifications dated February 10, 2010.

13. Provide additionalinformation on the following. Table 1.8.1-1 of Attachment 3 suggests that Unit 4 and the southeast emergency intake are more limiting than releasesfrom Unit 3 or to the northeastemergency intake. Provide the basisfor this determination(i.e., were calculationsmade to qualitatively confirm this?). Page2 of PTN-ENG-SENS-02-052, Rev.

2, "Release/ReceptorCombination Table," appearsto provide a more inclusive list of potentialsource and receptorpairs. However, some of the values in the PTN table do not match those in Table 1.8.1-1. Further,the PTN table refers to east and west emergency intakes whereas references in the proposed revision to the technical specification and in Attachment 3 refer to southeast and northeastintakes. Does the phrase "creditfor dilution allowed" refer to the assumed cross sectional building area of 1254 mi2 ? Provide discussion on why the 4.8 metersfrom the plantstack to the east emergency intake provided in the PTN table was not the limitingpair?

Calculations were performed with ARCON96 to confirm the selection of the limiting release/receptor pair X/Q values used in the dose calculations. The limiting X/Q cases were

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 17 of 56 Response to 03/24/2010 RAI on AST Methodology chosen from over 100 individual ARCON96 cases representing Unit 3 and Unit 4 release receptor pairs. A full listing of individual ARCON96 case results are presented in Table 3.

Attachment 5 of PTN-ENG-SENS-02-052, Rev 2 (enclosure to L-2009-163) describes the replacement of East and West Emergency Intakes with new NE and SE Emergency Intakes, located significantly farther away from all release points. All final Turkey Point X/Q results were calculated for these two new Emergency Intake locations. Tables 1 and 2 provide the inputs used in development of the release-receptor pair data for the new emergency intake locations. Distances were calculated using GPS coordinates in feet. The coordinates for the new emergency air intakes are N4618, E 10457 for the NE Emergency Air Intake & N4122, E10371 for the SE Emergency Air Intake from Figure 1 in Attachment 5 of PTN-ENG-SENS-02-052, Rev 2 (enclosure to L-2009-163).

Distances and directions from each of the release points to the normal air intakes listed in Attachment 2 of PTN-ENG-SENS-02-052, Rev 2 (enclosure to L-2009-163) continue to apply. For completeness, distances for the normal intake release-receptor pairs are calculated and presented in Table 2 using intake coordinates ofN4357, E10049.

The 1254 m2 value is used by ARCON96 to calculate the building wake effect for release points immediately adjacent to the containment building. "Credit for Dilution Allowed" refers to the applicability of the reductions in the x/Qs as permitted by RG 1.194 for the plume rise model and the dual intake configuration. The use of these dilution credits for the new NE and SE emergency intake locations are discussed in the Notes at the end of Table 3.

The 4.8 meter distance cited in Attachment 2 of PTN-ENG-SENS-02-052, Rev 2 (enclosure to L-2009-163) is the distance from the Unit 4 stack to the existing east emergency air intake location. However, this value was not used in the z/Q calculation supporting the AST submittal since the final X/Q results reflect the new NE/SE Emergency Air Intake locations.

Tables 1, 2, & 3 provide information that consolidates the information presented in PTN-ENG-SENS-02-052, Rev. 2, "Release/Receptor Combination Table". (enclosure to L-2009-163) for the emergency air intakes.

14. Is the 24 hour2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months temperature swing discussedon page 16 ofAttachment 3 the difference between daily maximum and minimum temperatures? How does this swing vary by time of year? Given that the accident is assumed to be of 30-day duration, why should an annual average value be used ratherthan a more limiting value such as thatfor the limiting 30 day period? How is the swing temperature used in the calculation?

The temperature swing is the average of all air temperature differences, determined for each hourly reading from the previous 24 hour2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months time interval. The following process was used:

a. For each hourly reading, beginning with the 25th hourly reading, determine a maximum and minimum temperature (from both A and B channels) for the 10 meter (10.36 meters actual) sensor elevation from the previous 24 hourly readings.

b. Compute a AT for both A and B channels (maximum minus minimum), and choose the maximum AT.

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 18 of 56 Response to 03/24/2010 RAI on AST Methodology

c. Compute an average value for AT from all non-blank entries.

The value cited was the result of work previously performed for other Turkey Point applications. No information was generated in that prior work to evaluate the time dependent (monthly or yearly) variation of this average. The result available is the average of all hourly reading data in the population, which included the South Dade meteorological tower data from 1997 through 2001. Due to the conservatisms discussed below, similar manipulations of the current South Dade meteorological tower data set from 2002 through 2007 were not repeated.

The temperature swing is used to determine the amount of vapor released from the RWST due to thermal expansion of the tank contents. This value is combined with the displacement from the RWST backleakage to obtain the total vapor release rate from the tank in the LOCA dose calculation. A number of conservative modeling assumptions were made in determining this value:

" The process described above assures that only positive temperature deltas are averaged. Thus, the dose calculation conservatively models continuous exhaust of the tank vapor space volume.

" The outside air temperature swing is assumed to represent instantaneous ideal gas expansion of the air and vapor contents of the RWST vapor space. This neglects the significant heat transfer time lags required to transfer the heat from the outside air to the vapor space contents of the RWST through the walls of the tank.

Heat sink and vapor temperature moderation effects due to the significant volume of liquid in the RWST are neglected in the assumption of continuous temperature equivalence between the outside air and the vapor contents of the tank.

15. Page 16 of Attachment 3 discusses the 95th percentile wind speed with respect to calculationsfor assumed releasesfrom the main steam safety valves (MSSVs) and atmosphericdump valves (AD Vs). PerRG 1.194, "AtmosphericRelative Concentrations for ControlRoom RadiologicalHabitabilityAssessments at Nuclearpower Plants,"

provide an example of how the wind speed adjustment was calculatedto demonstrate that the effluent velocity is at leastfive times higher than the 95th percentile wind speed. How was the effluent velocity determinedfor the MSSVs and AD Vs and how does it vary as a function of time? Confirm that the effluent release is uncapped and in a vertical upward direction.

The meteorological data used for the ARCON96 runs to determine the 9 5 th percentile wind speed at the limiting ADV or MSSV release height. The limiting release height is the one at which the calculated 95h percentile wind speed is the greatest. The Unit 4 MSSV release produces the greatest 9 5th percentile wind speed since it has the highest release point of the analyzed ADVs and MSSVs.

All of the yearly meteorological data files were combined into a single, composite data set. A "wind speed multiplier" was determined in accordance with the ARCON96 documentation based upon the stability class for each hour of data. The "wind speed multiplier" times the

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 19 of 56 Response to 03/24/2010 RAI on AST Methodology 10 m (11.58 meters actual) wind speed yields the expected wind speed at the height of the release.

The wind speed multiplier is selected based upon the stability class, and is taken from a special ARCON96 case run. Case 22 in Table 3, for a release from Unit 4 MSSV to the normal control room intake, was renamed tp22qa and rerun with the Expanded QA output option selected. This expanded QA output file presents the wind speed correction factors for the release height from this case. A review of the ARCON96 source code indicates that the value C2, which is listed in the expanded QA output file, is the multiplier based on stability class used on the meteorological lower wind speed data for each hour to determine the wind speed at the release height.

All of the hourly release height wind speeds were used to determine the. 95th percentile value.

The 9 5th percentile wind speed for the Unit 4 MSSV release height is 16.8 miles per hour.

This value is multiplied by the conversion factor of 1.4667 to obtain the 95t1 percentile wind speed for the release through an ADV or MSSV as 24.6 feet per second. That is, 95% of all of the hourly wind speeds at the Unit 4 MSSV release height are less than 24.6 feet per second. This value is then compared to the ADV and MSSV vertical exit velocities, which are determined from HZP plant conditions and are based upon the rated relief valve capacities.

Based on the above discussion, the "plume rise" adjustment described in Section 6 of RG 1.194 applies. Since the relief valve discharge velocities exceed five times the 95th percentile wind speed, the atmospheric dispersion factors for the main steam safety valve discharge and the atmospheric dump valve silencer discharge were reduced by a factor of 5.

Futhermore, this plume rise factor is only used during the first two hours of the event. Once RCS cooldown begins, the intact steam generator pressure is reduced to control the RCS temperature. At lower steam pressures, the ADV discharge velocities will decrease, and the plume rise criteria will no longer be met. The effluent releases from the MSSV and ADV silencers are uncapped and oriented in a vertical upward direction.

16. Regardingthe DBAs analyzed in support of this LAR, please confirm that the generated x/Q values model the limiting doses and that all crediblepotential releasescenarioswere considered, including those due to loss of offsite power or other singlefailures.

The X/Qs used in the dose analyses and presented in the LAR were selected to conservatively model the most limiting dose consequences. Table 3 lists all 105 release-receptor pairings considered and their associated X/Qs. Conservative release-receptor pairs were selected on a case-by-case basis in order to bound other possible release paths which may be applicable to each event. Tables 1.8.1-2 and 1.8.1-3 ofNAI-1396-045, Rev 1 summarize the limiting

'release-receptor point pairs and x/Qs assumed for the analyzed events. Dose consequence events were modeled in compliance with RG 1.183 for PTN's DBA events regarding loss of offsite power and other single failures which may affect the dose consequence.

17. What wind speed values were used in developing the jointfrequency distributions(JFDs) used as input to the PA VAN computer code calculations? For example, if two consecutive

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 20 of 56 Response to 03/24/2010 RAI on AST Methodology categories are defined as 1-3 miles per hour (mph) and 4-7 mph, what is tile value used to define the upper limit of the lower category (e.g., 3 mph, 3.5 mph, 4 mph)?

Inputs to PAVAN defined the seven (7) upper wind speed limit values based on interpretation of the current site meteorological quarterly and annual reports as:

Bin 1: 1.0mph Bin 2: 3.0 mph Bin 3: 7.0 mph Bin 4: 12.0 mph Bin 5: 18.0 mph Bin 6: 24.0 mph Bin 7: 65.0 mph Subsequent discussion with PTN's meteorological services contractor indicates that the meteorological data is actually "binned" into the following groups:

Bin 1: < 0.5 is calm Bin 2: > 0.5 and < 3.5 is labeled 1-3 mph Bin 3: > 3.5 and < 7.5 is labeled 4-7 mph Bin 4: > 7.5 and < 12.5 is labeled 8-12 mph Bin 5: > 12.5 and < 18.5 is labeled 13-18 mph Bin 6: > 18.5 and < 24.5 is labeled 19-24 mph Bin 7: > 24.5 is labeled > 24 mph Regulatory Issues Summary (RIS) 2006-04 recommends a larger number of wind speed categories than was used in developing the joint frequency distributions for input to PAVAN for the AST submittal. Consistent with the RIS recommendations, the joint frequency distributions have been "rebinned" into the thirteen wind speed categories suggested in the RIS, i.e., calm, 0.5, 0.75, 1.0, 1.25, 1.5, 2.0, 3.0, 4.0, 5.0, 6.0, 8.0, and 10.0 meters/second, plus one more for wind speeds > 10 mps.

Bin 1: < 0.22 mps is calm Bin 2: > 0.22 up to 0.50 mps Bin 3: > 0.50 up to 0.75 mps Bin 4: > 0.75 up to 1.00 mps Bin 5: > 1.00 up to 1.25 mps Bin 6: > 1.25 up to 1.50 mps Bin 7: > 1.50 up to 2.00 mps Bin 8: > 2.00 up to 3.00 mps Bin 9: > 3.00 up to 4.00 mps Bin 10: > 4.00 up to 5.00 mps Bin 11: > 5.00 up to 6.00 mps Bin 12: > 6.00 up to 8.00 mps Bin 13: > 8.00 up to 10.00 mps Bin 14: > 10.00 up to 26.00 mps This is the maximum number of groups that can be accommodated by ARCON96.

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 21 of 56 Response to 03/24/2010 RAI on AST Methodology

18. The choice of wind speed categories used in the PA VAN calculationsappearsto result in some clustering of the data in the lower categories. This may affect the resultantZ/Q value estimates generatedby the PA VAN computer code. NRC Regulatory Issues Summary (RIS) 2006-4, "Experience with Implementation of Alternative Source Terms," states that input to PA VAN should have a large number of wind speed categoriesat the lower wind speeds in order to produce the best results. Provide a supplement to Section 4, "AtmosphericDispersion," of Attachment 6 to providejustificationfor the selection of wind speed categories used in PA VAN calculationsconsidering the recommendation in RIS 2006-4.

The PAVAN inputs were extracted from PTN's annual meteorological reports generated by the existing Turkey Point Meteorological Tower data acquisition and reporting systems. The Joint Frequency Distributions were extracted from these archived reports rather than having been independently generated from the hourly readings.

As indicated in response to RAI #17, the wind speed categories used in the PAVAN calculations have been revised to conform to the RIS 2006-04 recommendations. The resulting offsite x/Qs based on the new binning actually decreased from those originally reported as indicated below.

TP Report Binned JFD Data Rebinned Hourly TP Data RIS Compliant Time Period EAB y,/Q LPZ X/Q EAB X/Q LPZ X/Q (sec/m3) (sec/m 3 ) (sec/mi3 ) (sec/m3) 0-2 hours 1.71E-04 3.76E-05 1.36E-04 2.76E-05 2-8 hours 9.84E-05 1.64E-05 7.78E-05 1.23E-05 8-24 hours 7.47E-05 1.08E-05 5.89E-05 8.2 1E-06 1-4 days 4.11E-05 4.38E-06 3.22E-05 3.42E-06 4-30 days 1.74E-05 1.20E-06 1.35E-05 9.74E-07 The lower x/Qs are anticipated to reduce the radiological dose consequences at the EAB and LPZ for the design basis accidents presented in the LAR submittal. In order to assure consistent and accurate documentation, these lower offsite radiological dose consequences will be provided in a supplemental response.

19. Page 16 of Attachment 3 states several conversions were performed to the JFD to result in thefile providedin support of the LAR. Providefurther discussion of how the JFD was developed in comparison to the hourly datafiles provided in the ARCON96 format. Other than the JFD,provide a consolidatedlist of all inputs and assumptions used in the PA VAN calculations. A copy of the summary pages of the PA VAN outputs is acceptableto show inputs.

The JFD annual reports from FPL archives for 2005-2007 were provided as input to the PAVAN analyses rather than the raw hourly data used for ARCON96. The JFD reports were the available outputs from the PTN meteorological tower monitoring and reporting program.

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 22 of 56 Response to 03/24/2010 RAI on AST Methodology The JFD reports were converted from either electronic document text or scanned images into numbers. The supplied JFD data was given in terms of "percent frequency of wind directions" and had to be converted to numbers of observations instead of percentage. Once this data conversion was complete, these report formatted values were converted to the PAVAN input format. The input summary from the 7 Bin PAVAN output file is provided in Table 4 As indicated in the responses to RAI #s 17 and 18 above, the JFDs for 2003-2007 have been rebinned into 14 wind speed categories in order to comply with NRC RIS 2006-04 recommendations. This involved generation of the JFDs directly from the hourly meteorological data instead of simply using the Land Utilization supplied meteorological reports. The input summary from the 14 Bin PAVAN output file is provided in Table 5.

20. For TS 3/4.7.5 "ControlRoom Emergency Ventilation System", the action statementfor modes 1, 2, 3, and 4 states, "with the Control Room Emergency Ventilation System inoperable,suspend all movement offuel in the spentfuel pool and restore the inoperable system to OPERABLE status within 84 hours9.722222e-4 days 0.0233 hours 1.388889e-4 weeks 3.1962e-5 months ..." Provide a discussion describing what action will be taken to mitigate the consequences of a DBA that may occur during the 84 hours9.722222e-4 days 0.0233 hours 1.388889e-4 weeks 3.1962e-5 months when the system is inoperable. The discussion should include details describing how compliance with Appendix A to 10 CFR Part50 GDC 19 "ControlRoom" will be maintained. The discussionshould also state whether the 84 hours9.722222e-4 days 0.0233 hours 1.388889e-4 weeks 3.1962e-5 months arefactored into the calculateddose of the licensing basis analyses of DBA consequences.

PTN's Control Room Emergency Ventilation System (CREVS) is safety-related and provides for redundancy of the active system components, e.g., air handling and condensing units, recirculation fans, and associated dampers, required to satisfy the design basis capability of the system with respect to radiological emergencies. As stated in UFSAR Section 9.9.1.1, the system is capable of automatically starting under accident conditions to initiate control room pressurization and filtration, assuming the occurrence of a single active damper or supply fan failure. The system is also supported by safety-related, redundant radiation monitors in the normal air intake. These active components are provided with emergency power via the emergency diesel generators in the event of loss ofoffsite power.

CREVS is currently equipped with a single recirculation filter and utilizes a single ventilation duct distribution system to provide the ventilation requirements for a common control room serving both units. However, PTN is currently considering several possible design modifications to CREVS in order to improve its reliability and availability including installation of a permanent 2nd in-line recirculation filter. The intent of such modifications would be to make the system more robust and support enhancement of the current TS to be more in-line with the approved Westinghouse Standard Technical Specifications.

With CREVS inoperable in MODES 1, 2, 3, and 4, TS 3.7.5 requires the suspension of all fuel movement in the spent fuel pool and restoration of CREVS to operable status within 84 hours9.722222e-4 days 0.0233 hours 1.388889e-4 weeks 3.1962e-5 months . However, PTN administrative controls are more restrictive limiting planned outage times to only '/2 of the TS allowable outage time (AOT), i.e., 42 hours4.861111e-4 days 0.0117 hours 6.944444e-5 weeks 1.5981e-5 months . The AOT is based on the low probability of a design basis accident (DBA) occurring during this time period and the ability of the remaining system configuration to provide the required system design basis

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 23 of 56 Response to 03/24/2010 RAI on AST Methodology safety-function(s). In the unlikely event that the remaining system configuration cannot provide its safety function when required, provisions are in place via the emergency plan to protect control room personnel, as necessary against radiological exposure including self-contained breathing apparatus (SCBA), potassium iodide (KI), etc.

Consistent with the basis discussion presented above, the AST radiological dose consequence analyses do not consider the occurrence of a DBA while in the TS 3.7.5 84 hour9.722222e-4 days 0.0233 hours 1.388889e-4 weeks 3.1962e-5 months AOT as credible, i.e., CREVS is assumed available during DBAs.

A proposed change to TS LCO 3/4.7.5 to implement Technical Specification Task Force (TSTF) 448, Control Room Habitability, addressing control room envelope (CRE) operability, maintenance, and testing was submitted on September 26, 2008 [Reference 3]. A proposed change to the TS 3.7.5 LCO is also being prepared to more specifically address CREVS operability requirements and required actions that are more in line with Westinghouse Standard Technical Specification treatment. This proposed change and additional details on potential CREVS design improvements will be provided to the NRC separately in a supplemental response.

References

1. W. Jefferson (FPL) to U.S. Nuclear Regulatory Commission (L-2009-133), "License Amendment Request 196: Alternative Source Term and Conforming Amendment,"

Accession No. ML092050277, June 25, 2009.

2. J. Paige (NRC) to M. Nazar, "Turkey Point Units 3 and 4 - Request for Additional Information Regarding Request to Adopt the Alternate Source Term (TAC Nos. ME 1624 and ME1625)," Accession No. ML100700446, March 24, 2010

3. W. Jefferson (FPL) to U.S. Nuclear Regulatory Commission (L-2008-196), "License Amendment Request (LAR 194): Control Room Habitability TSTF-448," Accession No. ML082820551, September 26, 2008

4. J. Stang (NRC) to R. Powers, "Donald C. Cook Nuclear Plant, Units 1 and 2 - Issuance of Amendments (TAC Nos. MB0739 and MB0740)," Accession No. ML012690136, October 24, 2001.

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 24 of 56 Response to 03/24/20 10 RAI on AST Methodolony Table 1 - Release-Receptor Combination Distance Summary Case Release Point Receptor Point RelCod Pt N-S RelCod Pt E-W RecCodCodf Pt N-S Rec Pt E-W N-S Dist E-W tfDist Distance Coord Coord Coord Coord ft ft ft Unit 3 purge tpo 1 duct outlet Normal fresh 4446.52 10115.63 4357 10049 89.52 66.63 112 containment air intake penetration Unit 3 purge t duct outlet NE emergency 4446.52 10115.63 4618 10457 171.48 341.37 382 tp02 containment fresh air intake penetration Unit 3 purge duct outlet SE emergency 4446.52 10115.63 4122 10371 324.52 255.37 413 tp03 containment fresh air intake penetration Unit 4 purge duct outlet Normal fresh 4334.75 10146.5 4357 10049 22.25 97.5 100 tpO4 containment air intake penetration Unit 4 purge tpO5 duct outlet NE emergency 4334.75 10146.5 4618 10457 283.25 310.5 420 containment fresh air intake penetration Unit 4 purge duct outlet SE emergency tp06 containment fresh air intake 4 10146.5 4122 10371 212.75 224.5 309 penetration tpO7 Unit 3 SFP Normal fresh 4516 10217.5 4357 10049 159 168.5 232 stack air intake tp08 Unit 3 SFP NE emergency 10217.5 4618 10457 102 239.5 260 stack fresh air intake 4 1 4 1

Zý Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 25 of 56 D + 01 IM /)C10 101 ATI A 4TT% tkA

-14 J -1, LJýi'. ,.I*"g , 1 X/ -* /* tlUl I*)lI l*AlWJriNL Case Release Point Receptor Point RelCod Pt N-S RelCod Pt E-W RecCodCodf Pt N-S Rec Pt E-W N-S Dist E-W tfDist Distance Coord Coord Coord Coord ft ft ft tp09 Unit 3 SFP SE emergency 4516 10217.5 4122 10371 394 153.5 423 stack fresh air intake Normal fresh tplO Plant stack air intake 4344.75 10200.75 4357 10049 12.25 151.75 152 1Plnt sack NE emergency tpl Plant stack fresh air intake 4344.75 10200.75 4618 10457 273.25 256.25 375 tp12 Plant stack SE emergency 4344.75 10200.75 4122 10371 222.75 170.25 280 fresh air intake Normal fresh tpl3 Unit 3 RWST aire 4448 10352 4357 10049 91 303 316 air intake NE emergency tpl4 Unit 3 RWST fresh airintake 4448 10352 4618 10457 170 105 200 tpl5 Unit 3 RWST SE emergency 4448 10352 4122 10371 326 19 327 fresh air intake Normal fresh tpl6 Unit 4 RWST air intake 4319 10352 4357 10049 38 303 305 tpl7nit 4RWST NE emergency tp7 Unit4RWST fresh airintake 4319 10352 4618 10457 299 105 317 tp18 Unit 4 RWST SE emergency 4319 10352 4122 10371 197 19 198 fresh air intake Unit 3 Closest Normal fresh tpl9 MSSV (RV air intake 4466.3 10070 4357 10049 109.3 21 111 1413)

Unit 3 Closest NE emergency tp2N MSSV(RV fresh air intake 4532.5 10070 4618 10457 85.5 387 396 1402)

Unit 3 Closest SE emergency tp2l MSSV (RV-3 fresh air intake 4466.3 10070 4122 10371 344.3 301 457 1413)

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 26 of 56 Da. +,.,-c:

nI A/MA/I( f) D AT A Qr TAT tk,*h A I-,*.

alkl_ v , V .- ' I t. 1 Receptor Point Rel Pt N-S Rel Pt E-W Rec Pt N-S Rec Pt E-W N-S Dist E-W Dist Distance Case Release Point Coord Coord Coord Coord ft ft ft Unit 4 Closest Normal fresh tp22 MSSV (RV air intake 4305.5 10070 4357 10049 51.5 21 56 1402)

Unit 4 Closest NE emergency tp23 MSSV (RV fresh air intake 4305.5 10070 4618 10457 312.5 387 497 1402)

Unit 4 Closest SE emergency tp24 MSSV (RV fresh air intake 4239.3 10070 4122 10371 117.3 301 323 1413) tp25 Unit 3 ADV Normal fresh 4486 10068.75 4357 10049 129 19.75 131 Silencer air intake tp26 Unit 3 ADV NE emergency 4486 10068.75 4618 10457 132 388.25 410 Silencer fresh air intake Unit 3 ADV SE emergency 4486 10068.75 4122 10371 364 302.25 473 tp27 Silencer fresh air intake tp28 Unit 4 ADV Normal fresh 4259 10068.75 4357 10049 98 19.75 100 Silencer air intake tp29 Unit4ADV NEemergency 4259 10068.75 4618 10457 359 388.25 529 Silencer fresh air intake Unit 4 ADV SE emergency 4259 10068.75 4122 10371 137 302.25 332 tp30 Silencer fresh air intake Unit 1 3 Main 3StamLine Normal fresh tp3 CSteam Line air intake 4472 10072.5 4357 10049 115 23.5 117 Closest Point Unit 3 Main NE emergency tp32 Steam Line fresh air intake 4528 10092.5 4618 10457 90 364.5 375 Closest Point Unit 3 Main SE emergency tp33 Steam Line fresh air intake 4472 10092.5 4122 10371 350 278.5 447 Closest Point

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License P*

Amendment Request 196

nn* tn (V/94*/2O1O RAT nn A*T Me, hndnl1ov Page 27 of 56 Rel Pt N-S Rel Pt E-W Rec Pt N-S Rec Pt E-W N-S Dist E-W Dist Distance Case Release Point Receptor Point Cod Cod CodCodf tf Coord -Coord Coord Coord ft ft ft Unit 4 Main Normal fresh 4301 10072.5 4357 10049 56 23.5 tp34 Steam Line air intake61 Closest Point Unit 4 Main tp35teamLine NE emergency tp35 Steam Line fresh air intake 4301 10092.5 4618 10457 317 364.5 483 Closest Point Uni6 teamMaine Unit 4 Main SE S emergency mrec 4245 10092.5 4122 10371 123 278.5 304 tp36 Steam Lint fresh air intake Closest Point feharitk 25 1025 42 07 2 7. 0 Aux Building Normal fresh tp37 Vent Supply air intake 4368.75 10220.5 4357 10049 11.75 171.5 172 (V-lO0)

Aux Building NE emergency tp38 Vent Supply fresh air intake 4368.75 10220.5 4618 10457 249.25 236.5 344 (V- 10)

Aux Building SE emergency tp39 Vent Supply fresh air intake 4368.75 10220.5 4122 10371 246.75 150.5 289 (V-10)

Aux Building Normal fresh tp40 Vent Supply air intake 4368.75 10234.5 4357 10049 11.75 185.5 186 (V-11)

Aux Building NE emergency tp4l Vent Supply fresh air intake 4368.75 10234.5 4618 10457 249.25 222.5 334 (V-ll)

Aux Building SE emergency tp42 Vent Supply fresh air intake 4368.75 10234.5 4122 10371 246.75 136.5 282 (V-11)

AFW Turbine Normal fresh 4491.45 10071.25 4357 10949 134.45 22.25 136 tp43 Steam Exhaust air intake (K3A)

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 28 of 56 Res*nonse to 03/24/2010 RAT on AST Methodologv Case Release Point Receptor Point RelCodPt N-S RelCod Pt E-W RecCodCodf Pt N-S Rec Pt E-W N-S Dist E-W tfDist Distance Coord Coord Coord Coord fl ft ft AFW Turbine tp44tp44 Steam Steam Exhaust xas air intake freshemergency 4491.45 10071.25 4618 10457 126.55 385.75 406 (K3A)

AFW Turbine SE emergency tp45 Steam Exhaust fresh air intake 4491.45 10071.25 4122 10371 369.45 299.75 476 (K3A)

AFW Turbine ormal fresh tp46 Steam Exhaust air intake 4491.45 10067.5 4357 10049 134.45 18.5 136 (K3B)

AFW Turbine tp47tp47 Steam Exhaust teamK3haus air intake freshemergency 4491.45 10067.5 4618 10457 126.55 389.5 410 (K3B)

AFW aF Turbine Tu S emergency SE m re c 4491.45 10067.5 4122 10371 369.45 303.5 478 tp48 Steam Exhaust ntk 478har (K3B)

AFW Turbine Normal fresh tp49 Steam Exhaust air intake 4491.45 10064.75 4357 10049 134.45 15.75 135 (K3C)

AFW Turbine tp50 Steam Exhaust fe freshemergency air intake 4491.45 10064.75 4618 10457 126.55 392.25 412 (K3C)

(K3C)

AFW Turbine tp5ltp51 Steam Stem Exhaust Exaus air intake freshemergency 4491.45 10064.75 4122 10371 369.45 306.25 480 (K3C) tUnit 3 Normal fresh tp52 Equipment air intake 4559 10165.5 4357 10049 202 116.5 233 Hatch Unit 3 NE emergency tp53 Equipment fresh air intake 4559 10165.5 4618 10457 59 291.5 297 Hatch

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 29 of 56 D +

+* W2

'/")A /")f) 11) D A T r A Q'T TAA th, Ar Ir r, Case Release Point Receptor Point RelCod Pt N-S RelCod Pt E-W RecCodCodf Pt N-S Rec Pt E-W N-S Dist E-W tfDist Distance Coord Coord Coord Coord ft ft ft Unit 3 SE emergency tp54 Equipment fresh air intake 4559 10165.5 4122 10371 437 205.5 483 Hatch UnitUnit 44 Normal fresh tp55 Equipment air intake .4215 10167.5 4357 10049 142 118.5 185 Hatch Unit 4 NE emergency tp56 Equipment fresh air intake 4215 10167.5 4618 10457 403 289.5 496 Hatch Unit 4 SE emergency tp57 Equipment fresh air intake 4215 10167.5 4122 10371 93 203.5 224 Hatch Unit 3 Normal fresh tp58 Personnel air intake 4480 10090 4357 10049 123 41 130 Hatch Unit 3 NE emergency tp59 Personnel fresh air intake 4480 10090 4618 10457 138 367 392 Hatch Unit 3 SE emergency tp60 Personnel fresh air intake 4480 10090 4122 10371 358 281 455 Hatch Unit 4 Normal fresh tp6l Personnel air intake 4293 10089.5 4357 10049 64 40.5 76 Hatch Unit 4 NE emergency tp62 Personnel fresh air intake 4293 10089.5 4618 10457 325 367.5 491 Hatch Unit 4 S mrec tp63 Personnel SE emergency 4293 10089.5 4122 10371 171 281.5 329 l fresh air intake

______ Hatch __ _ _ _ _ _ _ __ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __ _ _ _ _ _ _ _ _ _ _ __ _ _ _ _ _ _ _ _

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 30 of 56 R esonse to 03/24/2010 RAT on AST Methodologv Rel Pt N-S Rel Pt E-W Rec Pt N-S Rec Pt E-W N-S Dist E-W Dist Distance Case Release Point Receptor Point Coord Coord Coord Coord ft ft ft tp64 Unit Emergency3 Normal fresh afresh 4516 10206.5 4357 10049 159 157.5 224 Escape Lock airintake Unit 3 NE emergency tp65 Emergency fresh air intake 4516 10206.5 4618 10457 102 250.5 270 Escape Lock Unit 3 SE emergency tp66 Emergency fresh air intake 4516 10206.5 4122 10371 394 164.5 Escape Lock UnitUnit 44 Normal fresh tp67 Emergency air intake 4249 10204.5 4357 10049 108 155.5 189 Escape Lock Unit 4 NE emergency tp68 Emergency fresh air intake 4249 10204.5 4618 10457 369 252.5 447 Escape Lock Unit 4 SE emergency tp69 Emergency fresh air intake 4249 10204.5 4122 10371 127 166.5 209 Escape Lock tp7O Aux Building Normal fresh 4372 10277.5 4357 10049 15 228.5 229 Entrance (east) air intake tp71 Aux Building NE emergency 4372 10277.5 4618 10457 246 179.5 305 Entrance (east) fresh air intake tp72 Aux Building SE emergency 4372 10277.5 4122 10371 250 93.5 267 Entrance (east) fresh air intake Aux Building Normal fresh 372 tp73 Entrance air intake 4 10128.5 4357 10049 15 79.5 81 (west)

Aux Building NE emergency tp74 Entrance fresh air intake 4372 10128.5 4618 10457 246 328.5 410 (w est) I I I I I I I

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 31 of 56 D - f 01IM0V// 1 1? A I -, A qT Mplnthclnl InA Rel Pt N-S Rel Pt E-W Rec Pt N-S Rec Pt E-W N-S Dist E-W Dist Distance Case Release Point Receptor Point Coord Coord Coord Coord ft ft ft Aux Building SE emergency tp75 Entrance fresh air intake 4372 10128.5 4122 10371 250 242.5 348 (west)

Unit 3 Spent Nra rs tp76 Fuel Building Normal fresh 4518 10215.5 4357 10049 161 166.5 232 (SW corner) air intake Unit 3 Spent NE emergency tp77 Fuel Building fresh air intake 4560.83 10277.5 4618 10457 57.17 179.5 188 (NE corner)

Unit 3 Spent S mrec tp78 tp78FuelBuiling Fuel Building fresh air intake SE emergency 4518 10277.5 4122 10371 396 93.5 407 (SE corner)

Unit 4 Spent Normal fresh tp79 Fuel Building air intake 4269 10215.5 4357 10049 88 166.5 188 (NW corner)

Unit 4 Spent tp80 Fuel Building NE emergency 4269 10277.5 4618 10457 349 179.5 392 (NE corner)

Unite4cSpntr fresh air intake Unit 4 Spent SE emergency 4227.83 10277.5 4122 10371 105.83 93.5 141 (S

(SE Bfresh corner) air intake Normal fresh tp82 Unit 3 SJAE alresh 4602.7 10034 4357 10049 245.7 15 246 air intake______

tp83 Unit 3 SJAE NE emergency 4602.7 10034 4618 10457 15.3 423 423 fresh air intake tp84 tp84Unitnit 3SJAE 3 SJAE fresh air intake fE emergency 4602.7 10034 4122 10371 480.7 337 587 t Normal fresh tp85 Unit 4 SJAE air intake 4384 10034 4357 10049 27 15 31

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-25 1 Attachment License Amendment Request 196 Page 32 of 56 Resnonse to 03/24/2010 RAI on AST Methodolov Rel Pt N-S Rel Pt E-W Rec Pt N-S Rec Pt E-W N-S Dist E-W Dist Distance Case Release Point Receptor Point Coord Coord Coord Coord ft ft ft tp86 Unit 4 SJAE NE emergency 4384 10034 4618 10457 234 423 483 fresh air intake SE emergency tp87 Unit 4 SJAE fresh air intake 4384 10034 4122 10371 262 337 427 Unit 3 tp88 Westernmost Normal fresh 111 electrical air intake 4447.07 10114.7 .4357 10049 90.07 65.7 penetration Unit 3 Westernmost NE emergency tp89 electrical fresh air intake 4447.07 10114.7 4618 10457 170.93 342.3 383 penetration Unit 3 Westernmost SE emergency tp9O electrical fresh air intake 4447.07 10114.7 4122 10371 325.07 256.3 414 penetration Unit 3 tp9l Easternmost Normal fresh 4439.38 10134.72 4357 10049 82.38 85.72 119 electrical air intake penetration Unit 3 tp92 Easternmost NE emergency 4439.38 10134.72 4618 10457 178.62 322.28 368 electrical fresh air intake penetration Unit 3 tp93 Easternmost SE emergency electrical fresh air intake 4439.38 10134.72 4122 10371 317.38 236.28 396 penetration , IIIII _ I

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 33 of 56 Rnr*n~r tA ff1/74/ 121 R AT nn A ST Mpthnclcnlnv Rel Pt N-S Rel Pt E-W Rec Pt N-S Rec Pt E-W N-S Dist E-W Dist Distance Case Release Point Receptor Point Cod Cod CodCodf tf Coord Coord Coord Coord ft ft ft Unit 4 tp94 Westernmost Normal fresh 4327.52 10117.51 4357 10049 29.48 68.51 75 electrical air intake penetration Unit 4 tp95 Westernmost NE emergency 4327.52 10117.51 4618 10457 290.48 339.49 447 electrical fresh air intake penetration Unit 4 tp96 Westernmost SE emergency 4327.52 10117.51 4122 10371 205.52 253.49 326 electrical fresh air intake penetration Unit 4 tp97 Easternmost Normal fresh 4333.62 10134.72 4357 10049 23.38 85.72 89 electrical air intake penetration Unit 4 tp98 Easternmost NE emergency 4333.62 10134.72 4618 10457 284.38 322.28 430 electrical fresh air intake penetration Unit 4 Easternmost SE emergency tp99 electrical fresh air intake 4333.62 10134.72 4122 10371 211.62 236.28 317 penetration Unit 3 Closest Normal fresh tplOO MSL air intake 4472 10092.5 4357 10049 115 43.5 123 Penetration Unit 3 Closest NE emergency tplO P MSL fresh air intake 4528 10092.5 4618 10457 90 364.5 375 Penetration

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 1.96 Page 34 of 56 Resnomnse to 03/24/2010 RAI on AST Methodologv Rel Pt N-S Rel Pt E-W Rec Pt N-S Rec Pt E-W N-S Dist E-W Dist Distance Case ReleasePoint Receptor* Point Coord Coord Coord Coord ft ft ft Unit 3 Closest SE emergency tp102 MSL fresh air intake 4472 10092.5 4122 10371 350 278.5 447 Penetration Unit 4 Closest Normal fresh tp103 MSL air intake 4301 10092.5 4357 10049 56 43.5 71 Penetration Unit 4 Closest NE emergency tpl_ 04 MSL fresh air intake 4301 10092.5 4618 10457 317 364.5 483 Penetration Unit 4 Closest SE emergency tpl_05 MSL fresh air intake 4245 10092.5 4122 10371 123 278;5 304 Penetration

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 35 of 56 Resnonse to 03/24/2010 RAI on AST Methodologv Table 2 -- ARCON96 Release-Receptor Combination Inputs Location Release Height Building2 Area Distance Direction Intake Height Case Release Location Receptor (in) (m ) (in) (deg) (in)

Unit 3 purge duct Normal fresh air tpO1 outlet containment intake 15.2 1254 34.1 37 4.3 penetration Unit 3 purge duct NE emergency fresh tp02 outlet containment airgencyfe 15.2 1254 116.4 243 1.2 penetration Unit 3 purge duct SE emergency fresh tp03 outlet containment air intake 15.2 1254 125.8 322 1.2 penetration Unit 4 purge duct Normal fresh air tp04 outlet containment intake 6.1 1254 30.4 103 4.3 penetration Unit 4 purge duct NE emergency fresh 6.1 tp05 outlet containment air 1254 128.1 228 1.2 penetration Unit 4 purge duct SE emergency fresh tp06 outlet containment air intake 6.1 1254 94.2 313 1.2 penetration tpO7 Unit 3 SFP stack Normal fresh air 28.0 0.01 70.7 47 4.3 intake tp08 Unit 3 SFP stack NE emergency fresh 28.0 0.01 79.3 247 1.2 air intake tp09 Unit 3 SFP stack SE emergency fresh 28.0 0.01 128.8 339 1.2 air intake tplO Plant stack Normal fresh air 0.01 46.3 95 4.3 intake

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 36 of 56 Resnonse to 03/24/2010 RAI on AST Methodoloav Release Height Building Area Distance Direction Intake Height Case Release Location Receptor Location () (in)

(m2) (m) (deg) tpl I Plant stack NE emergency fresh 55.5 0.01 114.1 223 1.2 air intake tp12 Plant stack SE emergency fresh 55.5 0.01 85.4 323 1.2 air intake tp3 tpl3 nit 3RWSTintake Unit 3Normal fresh air 15.2 0.01 96.3 73 4.3 tp 14 Unit 3 RWST NE emergency fresh air intake 15.2 0.01 60.9 212 1.2 tpl 5 Unit 3 RWST SE emergency fresh 15.2 0.01 99.5 357 1.2 air intake tpl6 Unit 4 RWST Normal fresh air 15.2 0.01 92.9 97 4.3 intake tp17 Unit 4 RWST NE emergency fresh 15.2 0.01 96.5 199 1.2 air intake tpl8 Unit 4 RWST SE emergency fresh 15.2 0.01 60.3 354 1.2 air intake Unit 3 Closest Normal fresh air 18.4 0.01 33.8 11 4.3 MSSV (RV-3-1413) intake tp2O Unit 3 Closest NE emergency fresh 18.4 0.01 120.8 258 1.2 MSSV (RV-3-1402) air intake tp2l Unit 3 Closest SE emergency fresh 18.4 0.01 139.3 319 1.2 MSSV (RV-3-1413) air intake

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 37 of 56 Resoonse to 03/24/2010 RAI on AST Methodologv Release Height Building Area Distance Direction Intake Height Case Release Location Receptor Location (m) (deg) (m)

(11) (m2)

Unit 4 Closest Normal fresh air tp22 MSSV (RV-4-1402) intake 18.6 0.01 17.0 158 4.3 tp23 Unit 4 Closest NE emergency fresh 18.6 0.01 151.6 231 1.2 MSSV (RV-4-1402) air intake tp24 Unit 4 Closest SE emergency fresh 18.4 0.01 98.4 291 1.2 MSSV (RV-4-1413) air intake tp25 Unit 3 ADV Silencer Normal fresh air 17.7 0.01 38.1 9 4.3 intake tp26 Unit 3 ADV Silencer NE emergency fresh 17.7 0.01 124.9 251 1.2 air intake tp27 Unit 3 ADV Silencer SE emergency fresh 17.7 0.01 144.2 320 1.2 air intake tp28 Unit 4 ADV Silencer Normal fresh air 17.7 0.01 30.7 168 4.3 intake tp29 Unit 4 ADV Silencer NE emergency fresh 17.7 0.01 161.1 227 1.2 air intake tp30 Unit 4 ADV Silencer SE emergency fresh 17.7 0.01 101.1 294 1.2 air intake tp3 1 Unit 3 Main Steam Normal fresh air 11.2 0.01 35.6 12 4.3 Line Closest Point intake tp32 Unit 3 Main Steam NE emergency fresh Line Closest Point air intake 11.2 0.01 114.4 256 1.2

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 38 of 56

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 39 of 56 Response to 03/24/20 10 RAI on AST Methodology Receptor Location Release Height Building Area Distance Direction Intake Height Case Release Location (M) (m2) (M) (deg) (M) tp44 AFW Turbine Steam NE emergency fresh 14.9 0.01 123.7 252 1.2 Exhaust (K3A) air intake tp45 AFW Turbine Steam SE emergency fresh 14.9 0.01 145.0 321 1.2 Exhaust (K3A) air intake tp46 ~AFW Turbine Steam Exhaust (K3B)

Normal fresh air intake 14.9 0.01 41.4 8 4.3 tp47 AFW Turbine Steam NE emergency fresh 14.9 0.01 124.8 252 1.2 Exhaust (K3B) air intake tp48 AFW Turbine Steam SE emergency fresh 14.9 0.01 145.7 321 1.2 Exhaust (K3B) air intake AFW Turbine Steam Normal fresh air tp49 Exhaust (K3C) intake 14.9 0.01 41.1 7 4.3 AFW Turbine Steam NE emergency fresh 14.9 0.01 125.6 252 1.2 Exhaust (K3C) air intake tp5 AFW Turbine Steam SE emergency fresh 14.9 0.01 146.2 320 1.2 Exhaust (K3C) air intake tp52 Unit 3 Equipment Normal fresh air 5.4 1254 71.0 30 4.3 Hatch intake tp53 Unit 3 Equipment NE emergency fresh 1254 90.6 259 12 Hatch air intake tp54 Unit 3 Equipment SE emergency fresh 5.4 1254 147.1 335 1.2 Hatch air intake

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 40 of 56 Response to 03/24/20 10 RAI on AST Methodology 1~ r r r __________________________

Release Height Building Area Distance Direction Intake Height Case Release Location Receptor Location (m) (m2) (M) (deg) (M) tp55 Unit 4 Equipment Normal fresh air 54 1254 56.3 140 4.3 Hatch intake tp56 Unit 4 Equipment NE emergency fresh Hatch air intake 5.4 1254 151.2 216 1.2 tp57 Unit 4 Equipment SE emergency fresh 5.4 1254 68.1 295 1.2 Hatch air intake tp58 Unit 3 Personnel Normal fresh air 3.3 1254 39.6 18 4.3 Hatch intake tp59 Unit 3 Personnel NE emergency fresh 3.3 1254 119.5 249 1.2 Hatch air intake tp60 Unit 3 Personnel SE emergency fresh 3.3 1254 138.7 322 1.2 Hatch air intake tp6 1 Unit 4 Personnel Normal fresh air 3.3 1254 23.1 148 4.3 Hatch intake tp62 Unit 4 Personnel NE emergency fresh 1254 149.5 229 1.2 Hatch air intake tp63 Unit 4 Personnel SE emergency fresh 1254 100.3 301 1.2 Hatch air intake tp64 Unit 3 Emergency Normal fresh air .11.1 1254 68.2 45 4.3 Escape Lock intake Unit 3 Emergency NE emergency fresh 11.1 1254 82.4 248 1.2 Escape Lock air intake

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 41 of 56 Resnonse to 03/24/2010 RAI on AST Methodologv Release Height Building Area Distance Direction Intake Height Case Release Location Receptor Location (M) (M2) (M) (deg) (M) tp66 Unit 3 Emergency SE emergency fresh 11.1 1254 130.1 337 1.2 Escape Lock air intake Unit 4 Emergency Normal fresh air 11.1 1254 57.6 125 4.3 Escape Lock intake tp68 Unit 4 Emergency NE emergency fresh 11.1 1254 136.2 214 1.2 Escape Lock air intake tp69 Unit 4 Emergency SE emergency fresh 11.1 1254 63.8 307 1.2 Escape Lock air intake Aux Building Normal fresh air 0.0 0.01 69.7 86 4.3 Entrance (east) intake tp7 1 Aux Building NE emergency fresh 0.0 0.01 92.8 216 1.2 Entrance (east) air intake Aux Building SE emergency fresh tp72 Entrance (east) air intake 0.0 0.01 81.3 339 1.2 tp73 Aux Building Normal fresh air 0.0 0.01 24.6 79 4.3 Entrance (west) intake 0 tp74 Aux Building NE emergency fresh 0.0 0.01 125.0 233 1.2 Entrance (west) air intake tp75 Aux Building SE emergency fresh 0.0 0.01 106.1 316 1.2 Entrance (west) air intake Unit 3 Spent Fuel Normal fresh air tp76 Building (SW intake 4.3 0.01 70.7 46 4.3 comer)

Turkey Point Units 3 and 4 L-20 10-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 42 of 56 Response to 03/24/2010 RAI on AST Methodology Release Height Building Area Distance Direction Intake Height Case Release Location Receptor Location (M) (m2) (i) (deg) (M)

Unit 3 Spent Fuel NE emergency fresh tp77 Building (NE air intake 1.2 0.01 57.4 252 1.2 corner) tp78 Unit 3 Spent Fuel SE emergency fresh 1.2 0.01 124.0 347 1.2 Building (SE corner) air intake Unit 4 Spent Fuel Normal fresh air tp79 Building (NW intake 4.3 0.01 57.3 118 4.3 corner)

Unit 4 Spent Fuel NE emergency fresh tp80 Building (NE air intake 1.2 0.01 119.6 207 1.2 comer) tp81 Unit 4 Spent Fuel SE emergency fresh 1.2 0.01 43.0 319 1.2 Building (SE corner) air intake tp82 Unit 3 SJAE Normal fresh air 0.01 75.0 357 4.3 intake tp83 Unit 3 SJAE NE emergency fresh 7.5 0.01 129.0 268 1.2 air intake tp84 Unit 3 SJAE SE emergency fresh 7.5 0.01 178.9 325 1.2 air intake tp85 Unit 4 SJAE Normal fresh air 0.01 9.4 331 4.3 intake tp86 Unit 4 SJAE NE emergency fresh 0.01 147.3 241 1.2 air intake tp87 Unit 4 SJAE SE emergency fresh 0.01 130.1 308 1.2 air intake

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 43 of 56 Resoonse to 03/24/2010 RAI on AST M/thnrdnlnov Release Height Building Area Distance Direction Intake Height Case Release Location Receptor Location (1n) (m2) (in) (deg) (in) tp88 Unit 3 Westernmost Normal fresh air 4.0 1254 33.9 36 4.3 electrical penetration intake tp89 Unit 3 Westernmost NE emergency fresh 1.2 1254 116.6 243 1.2 electrical penetration air intake tp9O Unit 3 Westernmost SE emergency fresh 1.2 1254 126.1 322 1.2 electrical penetration air intake Unit 3 Easternmost Normal fresh air electrical penetration intake tp92 Unit 3 Easternmost NE emergency fresh 1.2 1254 112.3 241 1.2 electrical penetration air intake tp93 Unit 3 Easternmost SE emergency fresh 1.2 1254 120.6 323 1.2 electrical penetration air intake tp94 Unit 4 Westernmost Normal fresh air 4.0 1254 22.7 113 4.3 electrical penetration intake tp95 Unit 4 Westernmost NE emergency fresh 1.2 1254 13 6.IF 229 1.2 electrical penetration air intake tp96 Unit 4 Westernmost SE emergency fresh 1.2 1254 99.4 309 1.2 electrical penetration air intake tp97 Unit 4 Easternmost Normal fresh air 4.0 1254 27.0 105 4.3 electrical penetration intake tp98 Unit 4 Easternmost NE emergency fresh 1.2 1254 131.0 229 1.2 electrical penetration air intake

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 44 of 56 Response to 03/24/2010 RAI on AST Methodology Release Height Building Area Distance Direction Intake Height Case Release Location Receptor Location (M) (m2) (M) (deg) (in) tp99 Unit 4 Easternmost SE emergency fresh 1.2 1254 96.6 312 1.2 electrical penetration air intake tplOO Unit 3 Closest MSL Normal fresh air 11.2 1254 37.4 21 4.3 Penetration intake tplOl Unit 3 Closest MSL NE emergency fresh 11.2 1254 114.4 256 1.2 Penetration air intake tp 102 Unit 3 Closest MSL SE emergency fresh 11.2 1254 136.3 321 1.2 Penetration air intake tp103 Unit 4 Closest MSL Normal fresh air 11.2 1254 21.3 143 4.3 Penetration intake tpl04 Unit 4 Closest MSL NE emergency fresh 11.2 1254 147.2 229 1.2 Penetration air intake tp 105 Unit 4 Closest MSL SE emergency fresh 11.2 1254 92.7 294 1.2 Penetration air intake

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 45 of 56 Response to 03/24/20 10 RAI on AST Methodology This table provides a full list of 105 individual case z/Q results supporting PTN AST submittal.

Table 3 - Onsite X/Q Factors from ARCON96 Runs 0-2 hr 2-8 hr 8-24 hr 1-4 days 4-30 days Case Release Location Receptor Location Notes X/Q 3 (sec/mr )

XIQ 3 (sec/m )

XIQ (sec/r 3)

X/Q (sec/m 3)

X/Q sec/mr3 Unit 3 purge duct Normal fresh air 1 outlet containment intake 4.56E-03 3.45E-03 1.51-03 1.35E-03 9.69E-04 penetration Unit 3 purge duct 2 outlet containment NE emergency 2 4.04E-04 2.24E-04 1.04E-04 7.02E-05 3.82E-05

______ pnetrtionfresh air intake penetration Unit 3 purge duct 3 outlet containment SE emergency 2 4.39E-04 3.42E-04 1.17E-04 1.07E-04 7.81E-05 penetationfresh air intake penetration Unit 4 purge duct Normal fresh air 4 outlet containment intake 6.54E-03 5.89E-03 2.78E-03 2.63E-03 1.88E-03 penetration Unit 4 purge duct NE emergency 5 outlet containment 2 3.32E-04 1.88E-04 8.35E-05 6.01E-05 3.21E-05 penetration fresh air intake Unit 4 purge duct SE emergency 6 outlet containment 2 6.95E-04 5.39E-04 1.95E-04 1.69E-04 1.22E-04 penetration fresh air intake 7 Unit 3 SFP stack Ntake a 1.49E-03 1.27E-03 5.58E-04 5.00E-04 3.38E-04 Unittackintake SEP 8 Unit 3 SFP stack NE emergency 2 9.15E-04 5.11E-04 2.37E-04 1.66E-04 8.84E-05 fresh air intake 9 Unit 3 SFP stack SE emergency 2 5.34E-04 4.03E-04 1.45E-04 1.311E-04 9.44E-05 fresh air intake 10 Plant stack Normal fresh air 1.85E-03 1.70E-03 7.60E-04 7.52E-04 5.21E-04 intake 11 Plant stack NE emergency 2 4.3 1E-04 2.93E-04 1.28E-04 8.99E-05 4.92E-05 fresh air intake 12 Plant stack SE emergency 2 9.02E-04 7.50E-04 2.76E-04 2.22E-04 1.53E-04 fresh air intake 13 Unit 3 RWST Normal fresh air 1 9.14E-04 8.16E-04 3.96E-04 3.63E-04 2.54E-04 intake 14 Unit 3 RWST NE emergency 2 1.55E-03 8.96E-04 4.04E-04 2.84E-04 1.71E-04 fresh air intake 15 Unit 3 RWST SE emergency 2 7.59E-04 6.09E-04 2.54E-04 1.89E-04 1.42E-04 fresh air intake 16 Unit 4 RWST Normal fresh air 1 9.72E-04 8.76E-04 4.24E-04 4.05E-04 2.76E-04 intake 17 Unit 4 RWST NE emergency 2 6.96E-04 4.19E-04 1.94E-04 1.35E-04 8.50E-05 fresh air intake 18 Unit 4 RWST SE emergency 2 1.89E-03 1.49E-03 6.OOE-04 4.67E-04 3.49E-04 fresh air intake 19 Unit 3 Closest MSSV Normal fresh air 1,3 5.53E-03 4.33E-03 1.97E-03 1.51E-03 1.09E-03 (RV-3-1413) intake 13 3 3 3 3 7.1.9 20 Unit 3 Closest MSSV NE emergency 2,3 4.27E-04 2.50E-04 1.05E-04 7.60E-05 4.25E-05 (RV-3-1402) fresh air intake 21 Unit 3 Closest MSSV SE emergency 23 4.25E-04 3.29E-04 I.20E-04 1.04E-04 7.57E-05 (RV-3-1413) fresh air intake 1 22 Unit 4 Closest MSSV Normal fresh air 1,3 1.33E-02 1O1E-02 4.41E-03 3.16E-03 2.38E-03 (RV-4-1402) intake 23 Unit 4 Closest MSSV NE emergency 2,3 2.88E-04 1.61E-04 7.23E-05 5.27E-05 2.80E-05 (RV-4-1402) fresh air intake 2,3- _2.88E-0 1.61E-04 7.23E-05_ 5.27E-05 2.80E-05

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 46 of 56 Rre nneo tA (fl19dI9f1 A RAT nn A*T Mpthdl~AAna, 0-2 hr 2-8 hr 8-24 hr 1-4 days 4-30 days Case Release Location Receptor Notes x/Q X/Q 3 X/Q 3 x/Q 3 X/Q 3 3 ) (sec/m ) (sec/m )

Location (sec/m ) 3) (snm) (sec/

24 Unit 4 Closest MSSV SE emergency 2,3 6.79E-04 4.44E-04 1.84E-04 1.36E-04 8.47E-05 (RV-4-1413) fresh air intake 25 Unit 3 ADV Silencer Normal fresh air 1,3 4.53E-03 3.57E-03 1.62E-03 1.22E-03 9.01E-04 intake______

26 Unit 3 ADV Silencer NE emergency 2,3 4.04E-04 2.30E-04 9.91E-05 7.1 E-05 3.95E-05 fresh air intake 2 . - 2 - 9 E 7 - 9-27 Unit 3 ADV Silencer SE emergency 2,3 3.94E-04 3.09E-04 1.12E-04 9.68E-05 7.02E-05 fresh air intake 28 Uit 4ADVSilecer Normal fresh air 28 Unit 4 ADV Silencer intake 1,3 5.66E-03 4.32E-03 1.88E-03 1.31E-03 9.39E-04 29 Unit 4 ADV Silencer NE emergency 2,3 2.57E-04 1.49E-04 6.54E-05 4.86E-05 2.57E-05 fresh air intake 30 Unit 4 ADV Silencer SE emergency 2,3 6.69E-04 4.33E-04 1.78E-04 1.35E-04 8.68E-05 fresh air intake 31 Unit 3 Main Steam Normal fresh air 1 4.96E-03 4.18E-03 1.89E-03 1.45E-03 1.05E-03 Line Closest Point intake 32 Unit 3 Main Steam NE emergency 2 4.36E-04 2.58E-04 1.07E-04 7.68E-05 4.33E-05 Line Closest Point fresh air intake 33 Unit 3 Main Steam SE emergency 2 3.90E-04 3.16E-04 1.16E-04 9.76E-05 7.14E-05 Line Closest Point fresh air intake 34 Unit 4 Main Steam Normal fresh air 1 1.53E-02 1.28E-02 5.41E-03 3.90E-03 2.92E-03 Line Closest Point intake 35 Unit 4 Main Steam NE emergency 2 2.89E-04 1.65E-04 7.26E-05 5.30E-05 2.87E-05 Line Closest Point fresh air intake 36 Unit 4 Main Steam SE emergency 2 7.32E-04 4.61E-04 1.94E-04 1.45E-04 9.21E-05 Line Closest Point fresh air intake 37 Aux Building Vent Normal fresh air I 2.80E-03 2.53E-03 1.23E-03 1.15E-03 8.09E-04 Supply (V-b0) intake 38 Aux Building Vent NE emergency 2 5.41E-04 3.18E-04 1.39E-04 1.01E-04 5.58E-05 Supply (V-I10) fresh air intake Aux Building Vent SE emergency 2 8.68E-04 6.88E-04 2.61E-04 2.16E-04 1.60E-04 Supply (V-I 0) fresh air intake 40 Aux Building Vent Normal fresh air 1 2.41E-03 2.19E-03 1.06E-03 1.01E-03 6.93E-04 Supply (V-11) intake 41 Aux Building Vent NE emergency 2 5.71E-04 3.36E-04 1.44E-04 1.06E-04 5.80E-05 Supply (V-I 1) fresh air intake 42 Aux Building Vent SE emergency 2 8.94E-04 7.27E-04 2.72E-04 2.22E-04 1.67E-04 Supply (V-i1l) fresh air intake 43 AFW Turbine Stea Normal fesh air 1 3.91E-03 3.13E-03 1.42E-03 1.07E-03 7.91E-04 Exhaust (K3A) intake AFW Turbine Steam NE emergency 2 4.00E-04 2.28E-04 9.79E-05 6.96E-05 3.91E-05 Exhaust (K3A) fresh air intake 45 AFW Turbine Steam SE emergency 2 3.73E-04 2.98E-04 1.07E-04 9.39E-05 6.76E-05 Exhaust (K3A) fresh air intake 46 AFW Turbine Steam Normal fresh air 1 3.90E-03 3.12E-03 1.41E-03 1.06E-03 7.83E-04 Exhaust (K3B) intake 47 AFW Turbine Steam NE emergency 2 3.95E-04 2.24E-04 9.61E-05 6.89E-05 3.81E-05 Exhaust (K3B) fresh air intake 48 AFW Turbine Steam SE emergency 2 3.71E-04 2.95E-04 1.06E-04 9.32E-05 6.71E-05 Exhaust (K3B) fresh air intake 49 AFW Turbine Steam Normal fresh air 1 3.95E-03 3.17E-03 1.41E-03 1.05E-03 7.93E-04 Exhaust (K3C) intake 50 AFW Turbine Steam NE emergency 2 3.88E-04 2.22E-04 9.55E-05 6.83E-05 3.77E-05 Exhaust (K3C) fresh air intake 51 AFW Turbine Steam SE emergency 2 3.68E-04 2.92E-04 1.06E-04 9.15E-05 6.68E-05 Exhaust (K3C) fresh air intake I 52 Unit 3 Equipment Normal fresh air 1 1.22E-03 9.53E-04 4.32E-04 3.71E-04 2.60E-04 Hatch intake

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 47 of 56 0- PAT (VV/')A/')(1t(I1A /IZ -t nl 0-2 hr 2-8 hr 8-24 hr 1-4 days 4-30 days Case Release Location Receptor Notes X/Q 3 / X/Q Location (sec/m ) (sec/mr3 ) (sec/mr3) (sec/mr3) (sec/mr3) 53 Unit 3 Equipment NE emergency 2 6.17E-04 3.60E-04 1.50E-04 1.08E-04 5.92E-05 Hatch fresh air intake 54 Unit 3 Equipment SE emergency 2 3.1OE-04 2.46E-04 8.66E-05 7.56E-05 5.63E-05 Hatch fresh air intake 55 Unit 4 Equipment Normal fresh air I 1.93E-03 1.59E-03 6.91E-04 5.60E-04 4.55E-04 Hatch intake 56 Unit 4 Equipment NE emergency 2 2.53E-04 1.46E-04 6.55E-05 4.70E-05 2.70E-05 Hatch fresh air intake 57 Unit 4 Equipment SE emergency 2 1.18E-03 7.63E-04 3.19E-04 2.41E-04 1.53E-04 Hatch fresh air intake 58 Unit 3 Personnel Normal fresh air 3.68E-03 2.96E-03 1.35E-03 1.09E-03 7.60E-04 Hatch intake 59 Unit 3 Personnel NE emergency 2 3.71E-04 2.12E-04 9.05E-05 6.39E-05 3.63E-05 Hatch fresh air intake 60 Unit 3 Personnel SE emergency 2 3.44E-04 2.76E-04 9.72E-05 8.55E-05 6.27E-05 Hatch fresh air intake 61 Unit 4 Personnel Normal fresh air 1 1.03E-02 8.31E-03 3.58E-03 2.74E-03 2.16E-03 Hatch intake 62 Unit 4 Personnel NE emergency 2 2.52E-04 1.41 E-04 6.34E-05 4.54E-05 2.45E-05 Hatch fresh air intake 63 Unit 4 Personnel SE emergency 2 6.02E-04 4.11 E-04 1.60E-04 1.30E-04 8.66E-05 Hatch fresh air intake 64 Unit 3 Emergency Normal fresh air 1 1.35E-03 1.12E-03 4.90E-04 4.34E-04 2.97E-04 Escape Lock intake 65 Unit 3 Emergency NE emergency 2 7.35E-04 4.14E-04 1.83E-04 1.27E-04 6.95E-05 Escape Lock fresh air intake 66 Unit 3 Emergency SE emergency 2 3.95E-04 3.08E-04 1.09E-04 9.60E-05 7.1OE-05 Escape Lock fresh air intake 67 Unit 4 Emergency Normal fresh air I 1.87E-03 1.65E-03 7.39E-04 6.54E-04 5.04E-04 Escape Lock intake 68 Unit 4 Emergency NE emergency 2 3.06E-04 1.79E-04 7.89E-05 5.76E-05 3.34E-05 Escape Lock fresh air intake 69 Unit 4 Emergency SE emergency 2 1.44E-03 1.03E-03 3.89E-04 3.29E-04 2.27E-04 Escape Lock fresh air intake 70 Aux Building Normal fresh air 1 1.62E-03 1.48E-03 7.18E-04 6.75E-04 4.70E-04 Entrance (east) intake 71 Aux Building NE emergency 2 6.94E-04 4.06E-04 1.81E-04 1.30E-04 7.42E-05 Entrance (east) fresh air intake 72 Aux Building SE emergency 2 9.92E-04 8.OOE-04 3.01E-04 2.42E-04 1.84E-04 Entrance (east) fresh air intake 73 Aux Building Normal fresh air 1 1.14E-02 1.03E-02 4.97E-03 4.59E-03 3.28E-03 Entrance (west) intake 74 Aux Building NE emergency 2 3.77E-04 2.19E-04 9.30E-05 7.O1E-05 3.79E-05 Entrance (west) fresh air intake 75 Aux Building SE emergency 2 6.07E-04 4.80E-04 1.80E-04 1.52E-04 1.1OE-04 Entrance (west) fresh air intake 76 Unit 3 Spent Fuel Normal fresh air I I.51E-03 1.33E-03 6.16E-04 5.36E-04 3.57E-04 Building (SW comdr) intake 77 Unit 3 Spent Fuel NE emergency 2 1.53E-03 9.09E-04 3.82E-04 2.74E-04 1.51E-04 Building (NE comer) fresh air intake 78 Unit 3 Spent Fuel SE emergency 2 4.61E-04 3.68E-04 1.42E-04 1.13E-04 8.43E-05 Building (SE comer) fresh air intake Unit 4 Spent Fuel Normal fresh air 79 Building (NW intake 2.31E-03 2.06E-03 9.96E-04 8.94E-04 6.35E-04 comer) 80 Unit 4 Spent Fuel NE emergency 2 4.45E-04 2.65E-04 1.20E-04 8.3E-05 5.18E-05 Building (NE comer) fresh air intake ,_ IIIII______

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 48 of 56 Response to 03/24/2010 KAI on AS T Met odo~lo 0-2 hr 2-8 hr 8-24 hr 1-4 days 4-30 days Case Release Location Receptor Location Notes X/Q 3 X/Q 3 X/Q 3 X/Q 3 X/Q (sec/m ) (see/r ) (sec/mr ) (sec/m ) (sec/m 3) 81 Unit 4 Spent Fuel SE emergency 2 3.27E-03 2.66E-03 1.0E-03 8.15E-04 5.99E-04 Building (SE comer) fresh air intake 82 Unit 3 SJAE Normal fresh air 1.18E-03 9.72E-04 4.1OE-04 2.98E-04 2.26E-04 intake 83 Unit 3 SJAE NE emergency 2 3.45E-04 2.10E-04 8.72E-05 6.38E-05 3.60E-05 fresh air intake 84 Unit 3 SJAE SE emergency 2 2.30E-04 1.93E-04 6.91E-05 5.92E-05 4.39E-05 fresh air intake 85 Uit 4SJAE Normal fresh air 85 Unit 4 SJAE intake 1,4 5.57E-02 4.48E-02 1.64E-02 1.38E-02 1.02E-02 86 Unit 4 SJAE NE emergency 2 2.77E-04 1.60E-04 7.06E-05 5.03E-05 2.76E-05 fresh air intake 87 Unit 4 SJAE SE emergency 2 4.14E-04 3.10E-04 1.16E-04 9.92E-05 6.76E-05 fresh air intake 88 Unit 3 Westermost Normal fresh air 1 5.02E-03 3.93E-03 1.74E-03 1.56E-03 1.08E-03 electrical penetration intake 89 Unit 3 Westernmost NE emergency 2 3.90E-04 2.21E-04 9.93E-05 6.85E-05 3.68E-05 electrical penetration fresh air intake 90 Unit 3 Westernmost SE emergency 2 4.10E-04 3.27E-04 1.16E-04 1.02E-04 7.49E-05 electrical penetration fresh air intake 91 Unit 3 Easternmost Normal fresh air 4.49E-03 3.82E-03 1.66E-03 1.48E-03 9.99E-04 electrical penetration intake 92 Unit 3 Easternmost NE emergency 2 4.17E-04 2.35E-04 1.07E-04 7.40E-05 3.97E-05 electrical penetration fresh air intake 93 Unit 3 Easternmost SE emergency 2 4.45E-04 3.54E-04 1.25E-04 1.10E-04 8.14E-05 electrical penetration fresh air intake 94 Unit 4 Westermost Normal fresh air 1 1.14E-02 1.02E-02 4.74E-03 4.46E-03 3.24E-03 electrical penetration intake 95 Unit 4 Westernmost NE emergency 2 2.98E-04 1.67E-04 7.53E-05 5.37E-05 2.89E-05 electrical penetration fresh air intake 96 Unit 4 Westernmost SE emergency fresh air intake 2 6.30E-04 4.72E-04 1.74E-04 1.49E-04 1.05E-04 electrical penetration 97 Unit 4 Easternmost Normal fresh air 8.00E-03 7.49E-03 3.46E-03 3.29E-03 2.36E-03 electrical penetration intake 98 Unit 4 Easternmost NE emergency 2 3.18E-04 1.79E-04 8.07E-05 5.79E-05 3.11E-05 electrical penetration fresh air intake 99 Unit 4 Easternmost SE emergency 2 6.66E-04 5.12E-04 1.85E-04 1.62E-04 1.16E-04 electrical penetration fresh air intake 100 Unit 3 Closest MSL Normal fresh air 4.05E-03 3.14E-03 1.44E-03 1.18E-03 8.27E-04 Penetration intake 101 Unit 3 Closest MSL NE emergency 2 4.08E-04 2.34E-04 1.00E-04 7.02E-05 3.97E-05 Penetration fresh air intake 102 UnitPenetration 3 Closest MSL SE emergency 2 3.64E-04 2.85E-04 1.01E-04 8.87E-05 6.50E-05 fresh air intake 103 Unit 4 Closest MSL Normal fresh air 1 1.12E-02 9.10E-03 3.91E-03 3.11E-03 2.51E-03 Penetration intake 104 Unit 4 Closest MSL NE emergency 2 2.60E-04 1.45E-04 6.60E-05 4.65E-05 2.50E-05 Penetration fresh air intake 105 Unit 4 Closest MSL SE emergency 2 6.70E-04 4.29E-04 1.77E-04 1.34E-04 8.54E-05 Penetration fresh air intake

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 49 of 56 Response to 03/24/2010 RAI on AST Methodology y/Q Table Notes

1. No dual ventilation intake dilution credit allowed.

2. Emergency intakes are not in the same wind direction window. Dilution credit may be taken for these cases according to Section 3.3.2.2 of RG 1.194. Note that the values in the table do not have this factor applied.

3. Plume rise credit may possibly be taken for these release-receptor combinations per Section 6 of RG 1.194. Note: Values in the table do not have this factor applied.

4. These X/Q values for the Unit 4 SJAE release to the normal control room intake should not be used, since Item 3.4 of RG 1.194 warns that ARCON96 should not be used for distances of less than 10 meters. Such cases should be addressed on a case-by-case basis. This release receptor pair is closer than 10 meters, so the following method was used to generate conservative x/Qs for this pair. ARCON96 was used to evaluate predicted x,/Q values for hypothetical receptors at 10 and 20 meters along that direction, and adjustments were made using ratios of the farther distance squared to the nearer distance squared. The resulting predicted x/Qs at 10 meters were higher than the ARCON96 calculated 10 meter X/Qs. Using these conservatively adjusted 10 meter X/Qs as a starting point, conservative 9.4 meter X/Qs were generated with the same method (applied ratio of 10 meters squared to 9.4 meters squared). The conservatively adjusted 9.4 meter X/Qs are larger than the ARCON96 predictions for the actual input distance of 9.4 meters, so the following table results for Case 85 showing these adjustments should be used for this release point:

0-2 hr 2-8 hr 8-24 hr 1-4 days 4-30 days Distance Cian X/Q 3 X/Q 3 X/Q 3 X/Q 3 X/Q Case (m) (sec/rn ) (sec/m ) (sec/rn ) (sec/m ) (sec/rn 3 )

85 9.4 5.57E-02 4.48E-02 1.64E-02 1.38E-02 1.02E-02 85a 10 5.02E-02 4.02E-02 1.47E-02 1.24E-02 9.15E-03 85b 20 1.42E-02 1.13E-02 4.22E-03 3.47E-03 2.60E-03

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 50 of 56 Response to 03/24/20 10 RAI on AST Methodology Table 4 - Input Summary from the 7 Bin PAVAN Output File PRINTOUT OF INPUT CARDS 1 00000 01101 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 2 Turkey Point 2005-2007 Ground Level Release 3 11.58 Meters Delta-T from 10-60m 4 Met Data from NAI-1396-006, Rev. 0 5 NONE 6 7 26217 0 7 0.500 1254.000 46.400 10.000. 11.580 0.000 0.000 0.000 2.000 8.000 28.000 43.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 3.000 2.000 17.000 4.000 1.000 0.000 1.000 1.000 2.000 31.000 13.000 10.000 8.000 7.000 2.000 11.000 11.000 33.000 55.000 31.000 78.000 31.000 13.000 11.000 33.000145.000 97.000 39.000 37.000 25.000 26.000 14.000 41.000149.000 22.000 10.000130.000 74.000 38.000 43.000 52.000 66.000 45.000 32.000 31.000 15.000 16.000 6.000 8.000 56.000 0.000 0.000 2.000 4.000 0.000 0.000 4.000 0.000 5.000 9.000 0.000 0.000 0.000 3.000 2.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 2.000 0.000 0.000 0.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 1.000 16.000 7.000 7.000 4.000 2.000 6.000 9.000 25.000 16.000 12.000 6.000 1.000 3.000 5.000 16.000 21.000 39.000 29.000 83.000 55.000 49.000 65.000 80.000 76.000 65.000 39.000 8.000 8.000 13.000 7.000 19.000 35.000 9.000 3.000 48.000 92.000 69.000 52.000 57.000 30.000 24.000 33.000 22.000 6.000 4.000 2.000 3.000 19.000 0.000 0.000 3.000 10.000 3.000 0.000 3.000 0.000 0.000 0.000 1.000 0.000 0.000 0.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 1.000 1.000 1.000 0.000 2.000 1.000 1.000 1.000 0.000 1.000 1.000 3.000 3.000 0.000 1.000 23.000 6.000 16.000 11.000 12.000 22.000 22.000 33.000 10.000 9.000 9.000 13 .000 5.000 10.000 23.000 23.000 35.000 29.000 96.000101.00012"4.000177.000 81.000 62.000 48.000 39.000 11.000 21.000 15.000 12.000 8.000 29.000 10.000 4.000 49.000123.000116.000 82.000 61.000 22.000 16.000 26.000 16.000 5.000 4.000 2.000 5.000 15.000 0.000 1.000 3.000 11.000 1.000 0.000 0.000 0.000 1.000 0.000 2.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 16.000 5.000 12.000 4.000 13.000 5.000 15.000 10.000 8.000 10.000 8.000 11.000 4.000 9.000 15.000 19.000 101.000 49.000135.000213.000209.000206.000124.000113.000 73.000 52.000 38.000 40.000 73.000 60.000 79.000101.000 147.000 71.000282.000613.000919.000696.000315.000198.000191.000106.000 83.000 67.000 72.000 55.000 37.000200.000 21.000 38.000252.000484.000494.000172.000117.000 64.000 47.000 38.000 44.000 25.000 8.000 3.000 7.000 53.000 1.000 15.000 49.000 15.000 26.000 4.000 13.000 3.000 6.000 8.000 5.000 4 .000 2.000 0.000 0.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000 3.000 5.000 2.000 1.000 0.000 3 .000 1.000 0.000 0.000 0.000 47.000 38.000 26.000 58.000 78.000 99.000 65.000 40.000 27.000 42.000 54.000 59.000 56.000 67.000 54.000 61.000 9 242.000 85.000150.000522.000793.000509.000314.000174.000188.000119.000 89.000103.000148.000136.000166.000276.000

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 51 of 56 Response to 03/24/20 10 RAI on AST Methodology 9 122.000 68.000293.000676.000951.000492.000338.000171.O000 90.000 65.000 34.000 43.000 27.000 24.000 67.000206.000 9 6.000 26.000 83 .000120.000172.000 80.000 76.000 44.000 15.000 6.000 4.000 5.000 2.000 3.000 9.000 36.000 9 0.000 2.000 17.000 2.000 11.000 35.000 10.000 5.000 4.000 0.000 2.000 0.000 0.000 0.000 0.000 2.000 9 0.000 0.000 0.000 2.000 6.000 9.000 14.000 4.000 5.000 2.000 1.000 1.000 0.000 0.000 0.000 0.000 9 65.000 30.000 34.000 22.000 43.000 35.000 28.000 33.000 21.000 28.000 45.000 40.000 65.000 77.000100.000125.000 9 193.000 32.000 25.000 37.000158.000126.000100.000 54.000 43.000 47.000 54.000 98.000106.000108.000195.000302.000 9 21.000 4.000 10.000 5.000 7.000 10.000 6.000 2.000 4.000 3.000 2.000 9.000 3.000 5.000 22.000 56.000 9 0.000 1.000 1.000 0.000 0.000 0.000 0.000 1.000 0.000 0.000 1.000 2.000 1.000 0.000 0.000 2.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 0.000 0.000 0.000 0.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 1.000 1.000 0.000 0.000 0.000 0.000 9 44.000 9.000 6.000 1.000 5.000 3.000 4.000 9.000 7.000 14.000 24 .000 21.000 38.000 66.000 51.000 55.000 9 191.000 10.000 2.000 0.000 6.000 4.000 6.000 0.000 6.000 10.000 37.000 43.000 63.000 86.000181.000466.000 9 4.000 1.000 1.000 0.000 0.000 1.000 0.000 0.000 0.000 1.000 1.000 0.000 0.000 0.000 2.000 7.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 10 101. 1.000 3 .000 7.000 12.000 18.000 24.000 65.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 11 1701. 1701. 2113. 2113. 2113. 2113. 1269. 1269. 1269. 1269. 1269. 1269. 1269. 1269. 1269. 1701.

11 8045. 8045. 8045. 8045. 8045. 8045. 8045. 8045. 8045. 8045. 8045. 8045. 804S. 8045. 8045. 8045.

Turkey Point Units 3 and 4 L-20 10-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 52 of 56 Resnonse to 03/24/20 10 RAI on AST Methodologyv Table 5 - Input Summary from the 14 Bin PAVAN Output File PRINTOUT OF INPUT CARDS 1 00000 01101 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 2 Turkey Point 2003-2007 Ground Level Release 3 11.58 Meters Delta-T from 10-60m 4 Hourly Met Date from NAI-1396-006, Rev. 1, Case 3 JFD, Calms Counted 5 NONE 6 14 42350 0 7 0.500 1254.000 46.400 10.000 11.580 8 0.000 0.000 0.000 3.000 5.000 9.000 8.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 0.000 0.000 9 0.000 0.000 0.000 0.000 0.000 0.000 1.000 0.000 1.000 0.000 1.000 0.000 1.000 0.000 0.000 0.000 9 0.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 1.000 0.000 9 3.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 1.000 0.000 3.000 3.000 9 1.000 0.000 0.000. 0.000 1.000 1.000 0.000 0.000 0.000 0.000 0.000 1.000 0.000 0.000 3.000 2.000 9 2.000 0.000 1.000 0.000 0.000 0.000 1.000 2.000 4.000 5.000 0.000 0.000 2.000 3.000 5.000 6.000 9 19.000 11.000 7.000 11.000 5.000 1.000 9.000 37.000 11.000 9.000 7.000 7.000 3.000 7.000 11.000 22.000 9 41.000 28.000 44.000 23.000 12.000 2 9.000 50.000 97.000 44.000 11.000 6.000 10.000 9.000 11.000 31.000 73.000 9 51.000 28.000114.000 75.000 57.000125.000101.000162.000 87.000 31.000 23.000 1d.000 12.000 16.000 42.000112.000 9 44.000 28.000146.000 82.000146.000178.000112.000125.000 74.000 44.000 47.000 23.000 21. 000 12.000 33.000104.000 9 38.000 15.000167.000155.000233.000165.000 70.000 69.000 84.000 42.000 35.000 7.000 16.000 9.000 10.000 61.000 0.000 0.000 4.000 13.000 15.000 5.000 7.000 3.000 24.000 14.000 6.000 1.000 1.000 4.000 2.000 11.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 2.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 0.000 1.000 0.000 0.000 0.000 1.000 0.000 0.000 0.000 0.000 0.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 0.000 0.000 0.000 0.000 1.000 4.000 2.000 1.000 1.000 0.000 0.000 1.000 1.000 1.000 1.000 4.000 0.000 1.000 1.000 3.000 3.000 20.000 8.000 14.000 13.000 5.000 11.000 21.000 26.000 15.000 8.000 1.000 3.000 4.000 6.000 10.000 23.000 32.000 17.000 45.000 26. 000 48.000 45.000 44.000 54.000 29.000 24.000 8.000 4.000 8.000 16.000 22.000 26.000 23.000 22.000 56.000 72.000 92.000115.000 68.000 56.000 50.000 35.000 13.000 7.000 12.000 2.000 11.000 23.000 19.000 11.000 77.000 76. 000103. 000 95.000 55.000 46.000 45.000 45.000 15.000 5.000 10.000 3.000 7.000 22.000 7.000 5.000 59.000 91.000 94.000 59.000 51.000 21.000 21.000 39.000 21.000 4.000 6.000 6.000 4.000 22.000 1.000 1.000 5.000 13.000 3.000 3.000 4.000 0.000 1.000 2.000 4.000 0.000 0.000 1.000 1.000 2.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 4.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 0.000 1.000 0.000 2.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 0.000 1.000 0.000 0.000 0.000 2.000 0.000 0.000 2.000 0.000 0.000 0.000 0.000 1.000 1.000 0.000 1.000 1.000 3.000 1.000 1.000 1.000 0.000 1.000 1.000 2.000 3.000 1.000 3.000 5.000 5.000 3.000 5.000 5.000 2.000 2.000 7.000 1.000 3.000 4.000 2.000 1.000 5.000 2.000 2.000 25.000 10.000 26. 000 16.000 21.000 30.000 34.000 39.000 16. 000 9.000 10.000 14.000 7.000 13.000 26.000 23.000 40.000 24.000 46.000 57.000 74.000 85.000 52.000 45.000 39.000 17.000 12.000 15.000 6.000 15.000 16.000 13.000 28.000 21.000 61.000 82.000130.000150.000 66.000 56.000 39.000 22.000 10.000 13.000 14.000 10.000 6.000 21.000 15.000 9.000 69.000 75.000130.000109.000 49.000 31.000 35.000 43.000 19.000 13.000 10.000 5.000 1.000 17.000 12.000 2.000 53.000123.000131.000 69.000 50.000 14.000 16.000 26.000 13.000 5.000 5.000 2.000 3.000 20.000 0.000 0.000 4.000 13.000 4.000 4.000 3.000 0.000 2.000 1.000 5.000 0.000 0.000 0.000 1.000 2.000

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-25 1 Attachment License Amendment Request 196 Page 53 of 56 Response to 03/24/20 10 RAT on AST Methodology 9 0.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 0.000 0.000 0.000 2.000 3.000 2.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 1.000 1.000 2.000 1.000 3.000 2.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 2.000 1.000 '2.000 1.000 0.000 0.000 2.000 1.000 3.000 3.000 3.000 3.000 1.000 4.000 2.000 5.000 9 6.000 3.000 1.000 4.000 8.000 3.000 5.000 5.000 9.000 5.000 2.000 6.000 4.000 8.000 7.000 6.000 9 10.000 2.000 5.000 5.000 7.000 5.000 10.000 9.000 5.000 3.000 7.000 10.000 4.000 4.000 5.000 10.000 9 28.000 15.000 19.000 27.000 41.000 45.000 23.000 22.000 22.000 19.000 18.000 14.000 25.000 20.000 29.000 33.000 9 108.000 48.000125.000177.000200.000191.000160.000134.000 93.000 53.000 45.000 53.000 79.000 64.000 70.000118.000 9 123.000 46.000171.000352 .000480.000461.000258.000171.000148.000 87.000 63.000 52.000 64.000 60.000 41.000147.000 9 88.000 55.000207.000417.000590.000467.000256.000156.000145.000 86.000 57.000 42.000 55.000 47.000 37.000139.000 9 57.000 36.000247.000425.000584.000299.000172.000 95.000 95.000 65.000 49.000 27.000 33.000 10.000 15.000 89.000 9 16.000 40.000229.000380.000492.000191.000 99.000 54.000 57.000 48.000 53.000 23.000 12.000 14.000 13.000 50.000 9 1.000 20.000 57.000 22.000 37.000 12.000 9.000 3.000 7.000 10.000 12.000 7.000 6.000 2.000 1.000 5.000 9 0.000 1.000 0.000 0.000 0.000 0.000 5.000 1.000 0.000 14.000 6.000 2.000 0.000 0.000 0.000 0.000 9 0.000 3.000 2.000 0.000 3.000 1.000 4.000 2.000 0.000 0.000 3.000 1.000 2.000 1.000 0.000 1.000 9 4.000 7.000 2.000 12.000 7.000 7.000 5.000 8.000 2.000 7.000 4.000 8.000 3.000 6.000 7.000 6.000 9 18.000 10.000 9.000 15.000 9.000 22.000 14.000 9.000 7.000 9.000 17.000 16.000 14.000 14.000 14.000 18.000 9 23.000 20.000 18.000 33.000 39.000 47.000 28.000 19.000 10.000 20.000 31.000 26.000 20.000 34.000 21.000 19.000 9 34.000 9.000 9.000 28.000 57.000 67.000 42.000 19.000 18.000 24.000 25.000 24.000 37.000 36.000 26.000 31.000 9 91.000 34.000 50.000105.000236.000181.000101.000 57.000 55.000 52.000 57.000 65.000 76.000 71.000 64.000 71.000 9 235.000 78.000159.000527.000832.000515.000336.000197.000198.000125.000 96.000 92.000149.000112.000134.000282.000 9 167.000 48.000182.000505.000796.000442.000276.000168.000132.000 70.000 37.000 50.000 44.000 44.000 88.000259.000 9 57.000 62.000240.000425.000610.000297.000218.000104.000 71.000 35.000 21.000 25.000 10.000 12.000 36.000140.000 9 16.000 29.000126.000228.000310.000158.000111.000 75.000 38.000 17. 000 7.000 4.000 1.000 5.000 5.000 40.000 9 5.000 14.000 88.000 72.000121.000 50.000 39.000 24.000 18.000 12.000 7.000 2.000 1.000 3.000 13.000 41.000 9 0.000 3.000 17.000 3.000 9.000 23.000 13.000 7.000 4.000 1.000 1.000 1.000 2.000 0.000 0.000 4.000 9 0.000 0.000 1.000 3.000 9.000 15.000 17.000 4.000 2.000 0.000 3.000 2.000 2.000 0.000 0.000 0.000 9 2.000 0.000 4.000 2.000 5.000 3.000 3.000 1.000 0.000 3.000 4.000 2.000 4.000 6.000 2.000 3.000 9 10.000 3.000 4.000 3.000 5.000 3.000 8.000 4.000 4.000 5.000 9.000 6.000 6.000 12.000 11.000 10.000 9 10.000 14.000 8.000 7.000 14.000 10.000 11.000 11.000 5.000 11.000 5.000 20.000 24.000 13.000 28.000 26.000 9 28.000 20.000 19.000 6.000 16.000 17.000 10.000 17.000 9.000 16.000 25.000 21.000 29.000 35.000 52.000 55.000 9 52.000 16.000 16.000 15.000 13.000 14.000 17.000 16.000 7.000 14.000 20.000 21.000 38.000 43.000 49.000 77.000 9 136.000 30.000 21.000 31.000 50.000 55.000 45.000 25.000 20.000 26.000 50.000 56.000 78.000 89.000123.000229.000 9 198.000 25.000 18.000 27.000144.000116.000 75.000 38.000 37.000 33.000 39.000 88.000 73.000 82.000145.000272.000 9 47.000 3.000 10.000 8.000 21.000 16.000 10.000 11.000 9.000 8.000 5.000 16.000 0.000 5.000 39.000114.000 9 7.000 1.000 4-000 3.000 13.000 3.000 4.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 5.000 13.000 9 1.000 3.000 1.000 1.000 1.000 1.000 7.000 0.000 0.000 0.000 0.000 3.000 0.000 0.000 0.000 3.000 9 0.000 0.000 0.000 0.000 0.000 0.000 1.000 2.000 0.000 0.000 1.000 0.000 0.000 0.000 0.000 0.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 1.000 1.000 1.000 2.000 0.000 0.000 0.000 0.000 9 1.000 0.000 3.000 0.000 2.000 1.000 0.000 0.000 2.000 1.000 0.000 1.000 1.000 4.000 1.000 6.000 9 3.000 4.000 0.000 0.000 1.000 0.000 0.000 0.000 1.000 0.000 1.000 2.000 5.000 5.000 5.000 3.000 9 11.000 0.000 1.000 0.000 4.000 1.000 0.000 0.000 2.000 2.000 2.000 3.000 11.000 19.000 11.000 8.000 9 16.000 6.000 0.000 0.000 1.000 4.000 2.000 1.000 4.000 0.000 7.000 7.000 20.000 21.000 18.000 19.000 9 23.000 2.000 2.000 0.000 1.000 0.000 1.000 3.000 1.000 6.000 6.000 7.000 17.000 22.000 32.000 26.000 9 114.000 8.000 2.000 0.000 7.000 3.000 2.000 1.000 4.000 9.000 26.000 28.000 52.000 57.000 89.000179.000 9 244.000 6.000 2.000 1.000 3.000 3.000 9.000 0.000. 4.000 8.000 20.000 35.000 48.000 52.000161.000505.000 9 13.000 1.000 0.000 0.000 0.000 2.000 0.000 1.000 0.000 1.000 2.000 2.000 0.000 0.000 7.000 49.000 9 0.000 1.000 3.000 0.000 0.000 1.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 54 of 56 Response to 03/24/20 10 RAI on AST Methodology 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 9 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 10 101. 0.500 1.120 1.680 2.240 2.800 3.360 4.470 6.710 8.950 11.180 13.420 17.900 22*370 58.160 11 1701. 1701. 2113. 2113. 2113. 2113. 1269. 1269. 1269. 1269. 1269. 1269. 1269. 1269. 1269. 1701.

11 8045. 8045. 8045. 8045. 8045. 8045. 8045. 8045. 8045. 8045. 8045. 8045. 8045. 8045. 8045. 8045.

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 55 of 56 Response to 03/24/2010 RAI on AST Methodology r

Turkey Point Units 3 and 4 L-2010-065 Docket Nos. 50-250 and 50-251 Attachment License Amendment Request 196 Page 56 of 56 Response to 03/24/2010 RAI on AST Methodology Figure 2 - Technical Specification Bases (Information Only)

PrwUV '40.:N Pro iw Ttc : lorgcý 0-AI)M1-536 I

Ticsiiical Specificituion. Bases Contirol Pr~ogram.

i '211/ V(9.

L-200!)-i33D ArIrACiIMENT I 'Atta~chment2 (Page 44 ofI 11) Page3a1`126 TECHNICAL SPECI FCAT ION RASES 3/4.4.5 (Cont'd)

SG tubing is subject to a variety of degradation mechanisms. SG tubes. may experlence tube de*i'adation related 'to corrosion phenomena, such as wastage. pitting. iifItergraiular atta&i. and stress corrosion cracking*, along> with 'thcr nichlttnicauly. induced phenoiiomena such as dentiPig aidd Wear. These degr-aditionhneclhiiismY cani-impair tUbe integriiS. if they' are not nianaged eifectively, The SG petformance, criteia are, used to -iianage :SC tube degradation.

Specification 6.8.4j. Steam Generator jSG) Program, requires that a program be established and implnmlentLed.to ensure that SC tube intcgrity is maiwitiiinaed Pursuant to Speciieation 6.8.4j, tube ini.egnri is maintained, when the SC;jperlortnanee criteria are

iet. There are iihee. S(j perbm:anc lieri .ai: Struallu i1 ntegrity, accident induced Ieaikage arnd operational leakaTehee SCG erbrina'ce criteria are described itt Specfication 684,j. Nheeting the SO performance criteria provides reasonable assurance olriailntainin'g tube ilntcgritly;t normal and'accident conditions.

The processes used to meet the, SG performance criteria arc defined by the Steam Gene.rator Program Gtuidelines (Rdef 1).

0-20 gpm at Ioroom, Applicable Safeiy Analysis toperature condi, ons The sieam generator iube rupture (SGTR:) accidenit is tbe limiting desi- basis'evet. for SG tubes and avoiding a SGTR is the basis for this Specification. The alysis of a SGTR event assumes a boundin- prinmair-to-secondarv leakage rate equal to for each of the two intact SGs plus the leakage rate associated with a double-ended rupture of a single tube in the third (ruptured) SG: The. accideni analysis ior a SOTR assumes :the at*osphetic dulmp valves, .. ei ...

t . ....... .l.a.d i, 1The analvnsi for dsign basis accidents and transients otherilhan a SCTR assume ihe-:S(

and/or:t!ihe tubes ircia their structural intcgrity (i.e.. they are assumcd not to ruitirue). In the dos conscqucnc analysis - for thes: cxvcits thc activity level in the steam discharged to th s coQnde,,nser atmosphere is basid on a primnary-to-secondary leakage irate of -pi eal o through all SG s.

androug any o1- 'SG at eeeidet 'iditions or is assumed' tb inc I.se to thec'. lcvcls as a result0tf accident indtced 'adiih'iS. For a cidentSthatdot nd amoc funt a) damage.the priary coolant actuvity'lcve of )S- EQUJI VAII*NT l-131 r ssumed to be equal to the LCO 34.8, Reactor Coola ityS 1tenm Spei ic Activity. limits

,or accidents thai assume fuel daitnage, the prima ool' 'it activity>i a function of th amount of activity released firom the damaoed fuel. Th d se consequcn ,es olCthese'event S are within the limits of G(DC 19. Re -) 10.( 50.67 (Re. 7 o )r the NRC approved.licensing basis t . . ... .

Steam generator tube integrity satisfies Criterion 2 of" 0 CFR 50.3,6{c)(:2 (ii):

.. ope initially via the condednser r -r Isteam jetailr. ejec o s (SJAE)

Iheh via te m**ain te

- 1111"11-11-11-11

v t e Letter Sequence Response to RAI
TAC:ME1624, Administratively Control Containment Penetrations, TSTF-68, Revise Containment Requirements During Handling Irradiated Fuel and Core Alterations (Approved, Closed) TAC:ME1625, Administratively Control Containment Penetrations, TSTF-68, Revise Containment Requirements During Handling Irradiated Fuel and Core Alterations (Approved, Closed)
Initiation Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request Acceptance, Acceptance, Acceptance, Acceptance, Acceptance, Acceptance, Acceptance Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement Administration Withholding Request Acceptance Meeting, Meeting, Meeting, Meeting, Meeting, Meeting Questions 17 December 2009 25 February 2010 24 March 2010 23 June 2011 Answers 26 August 2009 10 February 2010 15 March 2010 14 April 2010 15 September 2010 14 December 2010 7 January 2011 22 February 2011 3 March 2011 31 March 2011 28 April 2011 25 March 2011 11 May 2011 29 April 2011 22 April 2011 20 May 2011 19 May 2011 7 July 2011 5 August 2011 29 July 2011 29 August 2011 19 August 2011 25 August 2011 17 January 2012 13 July 2012 21 June 2011 21 June 2011 Results Approval, Approval, Approval, Approval, Approval, Approval Other: L-2011-540, Safety Evaluation Report Review Supporting Fuel Storage Criticality Amendments 246 and 242, L-2012-118, Response to NRC ITSB RAI Regarding Clean TS Changes for EPU LAR No. 205 and Incorporation of Amendments 247 and 243 TS Changes on Relocation of Cycle Specific Parameters to the Core Operating Limits Report, L-2012-263, CFR 50.46, Acceptance Criteria for Emergency Core Cooling Systems in Light Water Nuclear Power Reactors - 30 Day Special Report, L-2012-293, FPL Review Comments on Extended Power Uprate Safety Evaluation Report, L-2012-426, Extended Power Uprate Cycle 26 Startup Report, ML110960521, ML110960523, ML112280292, ML12074A248, ML12074A251, ML12122A162, NRC-2011-0094, Federal Register Notice, Notice of Consideration Regarding Order Imposing Procedures for Document Access to Sensitive Unclassified Non-Safeguards Information.
MONTHYEAR2010-06-25 [Table View]

L-2010-065, Response to Request for Additional Information (RAI) Regarding Alternative Source Tear (AST) License Amendment Request (LAR) 196

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L-2010-065, Response to Request for Additional Information (RAI) Regarding Alternative Source Tear (AST) License Amendment Request (LAR) 196

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