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NRC-012 - Letter from Michael Kiley, Florida Power & Light, to N.R.C. Document Control Desk, Supplement 1 and Response to Request for Additional Information for License Amendment Request No. 231 (Application to Revise Ultimate Heat Sink Tem
	ML15314A489
Person / Time
Site:	Turkey Point
Issue date:	07/22/2014
From:	; NRC/OGC
To:	; Atomic Safety and Licensing Board Panel
	SECY RAS
References
	50-250-LA, 50-251-LA, ASLBP 15-935-02-LA-BD01, RAS 28491
	Download: ML15314A489 (16)
	v • d • e

10 CFR 50.90L-2014-235 July 22, 2014U.S. Nuclear Regulatory Commission ATTN: Document Control DeskWashington, DC 20555-0001 Turkey Point Units 3 and 4Docket Nos. 50-250 and 50-251Renewed Facility Operating License Nos. DPR-31 and DPR-41'

Subject:

References:

License Amendment Request No. 231, Application to Revise Ultimate Heat SinkTemperature Limit

-Supplement 1, and Response to Request for Additional Information

1. Florida Power

& Light Company (FPL) Letter L-2014-216, "LicenseAmendment Request No. 231, Application to Revise Technical Specifications to Revise Ultimate Heat Sink Temperature Limit," dated July 10, 2014.2. Florida Power

& Light Company Letter L-2014-226, "License Amendment Request No. 231, Application to Revise Ultimate Heat Sink Temperature Limit -Request for Emergency Approval,"

July 17, 2014.3. Email from NRC Project Manager for Turkey Point to FPL, "Turkey Point 3and 4 Request for Additional Information

-LAR 231 (TAC MF4392 andMF4393)," dated July 18, 2014 (RAIs 1-3)In Reference 1 Florida Power

& Light Company (FPL) requested an amendment to the Technical Specifications (TS) for the Turkey Point Nuclear Plant (Turkey Point), Units 3 and 4. InReference 2 FPL requested the NRC to review and approve the application on an emergencybasis. This letter supplements the application by revising the proposed Surveillance Requirements (SR) for the ultimate heat sink (UHS). The revision to the proposed SRs iscontained in Enclosure

1. In addition, Enclosure 2 to this letter provides the FPL response to theRequest for Additional Information (RAI) contained in Reference 3.The Reference 1 application proposed to revise the UHS water temperature limit from 100°F to104'F with consideration for instrument uncertainty. This supplement revises the proposedwording in the SRs to be consistent with the Limiting Condition for Operation, increases the proposed frequency of verifying UHS water temperature when water temperature exceeds I 00°F,and adds a requirement to the SRs to add instrument uncertainty to the indicated value.Florida Power & Light Company 9760 SW 344th St., Florida City, FL 33035A cc)

Florida Power & Light Company L-2014-235 Supplement to License Amendment Request No. 231 Page 2 of 2Enclosure I supplements the Reference 1 application and includes a mark-up of TS 3/4.7.4,Ultimate Heat Sink, reflecting the changes discussed above. These changes do not alter thedetermination of no significant hazards and the environmental considerations contained in theapplication because the revised request is bounded by the basis for change to a higher UHStemperature limit contained in the original application.

There are no new commitments made in this submission.

The Turkey Point Plant Nuclear Safety Committee has reviewed and approved this supplement to thelicense amendment application.

In accordance with 10 CFR 50.91(b)(1),

a copy of this letter isbeing forwarded to the State Designee of Florida.If you have any questions or require additional information, please contact Mr. Robert Tomontoat 305-246-7327.

I declare under penalty of perjury that the foregoing is true and correct.Executed on July 22, 2014.Very truly yours,Michael KileyVice President Turkey Point Nuclear Plant

Enclosures:

1. Supplement to Application to Revise Ultimate Heat Sink Temperature Limit2. Response to Request for Additional Information Nos. 1, 2 and 3cc: USNRC Regional Administrator, Region IIUSNRC Project Manager, Turkey Point Nuclear PlantUSNRC Senior Resident Inspector, Turkey Point Nuclear PlantMs. Cindy Becker, Florida Department of Health Florida Power & Light CompanySupplement to License Amendment Request No. 231L-2014-235 Enclosure 1Page 1 of 5Turkey Point Units 3 and 4License Amendment Request No. 231Supplement Application to Revise Ultimate Heat Sink Temperature LimitEnclosure

11. Description

2. Proposed Change3. Discussion of Change to the Application

4. Reference

5. Attachments 1.2.Proposed Technical Specification Page 3/4 7-17 Mark-upChange to Technical Specification Bases 3/4.7.4 Mark-Up Florida Power & Light Company L-2014-235 Supplement to License Amendment Request No. 231 Enclosure IPage 2 of 51.0 Description Florida Power & Light Company (FPL) amends the application (Reference

1) to revise theultimate heat sink (UHS) temperature limit. With this supplement FPL is revising the proposedchanges to the Surveillance Requirements (SR).2.0 Proposed ChangeThis application supplement revises the proposed wording in the SRs to be consistent with theLimiting Condition for Operation (LCO) in Technical Specification (TS) 3/4.7.4, Ultimate HeatSink, increases the proposed frequency of verifying UHS water temperature when watertemperature exceeds 1 00°F, and adds a requirement to the SRs to add instrument uncertainty tothe indicated value. Sections 2.1 and 2.2 below update those same sections contained in theReference 1 application.

2.1 Current TS and BasesCurrent TS 3/4.7.4, addresses UHS system operability by requiring that the averagesupply temperature to the Intake Cooling Water (ICW) system be within specified limits:LCO 3.7.4 states:The ultimate heat sink shall be OPERABLE with an average supply watertemperature less than or equal to 100°F.APPLICABILITY is Modes 1, 2, 3, and 4.The ACTION states:With the requirements of the above specification not satisfied, be in at least HOTSTANDBY within 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and In COLD SHUTDOWN within the following 30hours. This ACTION shall be applicable to both units simultaneously.

SR 4.7.4 states:The ultimate heat sink shall be determined OPERABLE at least once per 24 hour2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months sby verifying the average supply water temperature*

to be within its limit.The asterisk

(*) refers to a footnote that reads:Portable monitors may be used to measure the temperature.

Florida Power & Light Company L-2014-235 Supplement to License Amendment Request No. 231 Enclosure IPage 3 of 5TS BasesThe limit on Ultimate Heat Sink (UHS) temperature in conjunction with theSURVEILLANCE REQUIREMENTS of Technical Specification 3/4.7.2 will ensure thatsufficient cooling capacity is available either: (1) To provide normal cool down of thefacility, or (2) To mitigate the effects of accident conditions within acceptable limits.FPL has the option of monitoring the UHS temperature by monitoring the temperature inthe ICW system piping going to the inlet of the CCW Heat Exchangers.

Monitoring theUHS temperature after the ICW but prior to CCW Heat Exchangers is considered to beequivalent to temperature monitoring before the ICW Pumps. The supply water leavingthe ICW Pumps will be mixed and therefore, it will be representative of the bulk UHStemperature to the CCW Heat Exchanger inlet. The effects of the pump heating on thesupply water are negligible due to low ICW head and high water volume. Accordingly, monitoring the UHS temperature after the ICW Pumps but prior to the CCW HeatExchangers provides an equivalent location for monitoring the UHS temperature.

With the implementation of the CCW Heat Exchanger Performance Monitoring Program,the limiting UHS temperature can- be treated as a variable with an absolute upper limit of1 00°F without compromising any margin of safety. Demonstration of actual heatexchanger performance capability supports system operation with postulated canaltemperatures greater than 1 00°F. Therefore, an upper TS limit of I 00°F is conservative.

2.2 Proposed TS and Bases ChangesThe proposed revision to TS 3/4.7.4:LCO 3.7.4 would state:The ultimate heat sink shall be OPERABLE with an average supply watertemperature less than or equal to 104°F**.APPLICABILITY remains unchanged.

ACTION required remains unchanged except for the correction of a typographical error.The capitalized word 'In' before the words 'COLD SHUTDOWN' is properly reduced tolower case because it is not at the beginning of the sentence.

This is an administrative change that does not alter the required action. The typographical error was introduced when FPL provided the NRC retyped pages for License Amendments 260 and 255.Current SR 4.7.4 would be revised as follows:4.7.4 The ultimate heat sink shall be determined OPERABLE:

Florida Power & Light Company L-2014-235 Supplement to License Amendment Request No. 231 Enclosure IPage 4 of 5a. At least once per 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months by verifying the average supply water temperature*

is less than or equal to 1040F**.SR 4.7.4.b would be added:b. At least once per hour by verifying the average supply water temperature*

isless than or equal to 104°F**,

when water temperature exceeds 100°F**.The asterisk

(*) refers to a footnote that remains unchanged.

The double asterisk

(**) refers to a footnote that would state:**Instrument uncertainty shall be added to the indicated value.Also, the wording in SRs 4.7.4.a and 4.7.4.b is revised to be consistent with the LCOwhen referring to the LCO limit as being 'less than or equal to.'A mark-up of the proposed TS revision is contained in Attachment 1.The current TS bases above will be supplemented with the following two paragraphs:

Verifying UHS water temperature at least once per 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months is adequate to ensurethe limit of 104'F is not exceeded when the water temperature is less than 1 00°F.Due to daily variations in temperature, when UHS water temperature exceedsI 00°F the water temperature shall be verified at least once per hour to ensure thatcooling canal system temperature variations are appropriately captured thusensuring the Technical Specification limit is not exceeded.

For the UHS water temperature monitoring Surveillance Requirements, instrument measurement uncertainty is added to the indicated value to ensure theTechnical Specification limit is not exceeded.

A mark-up of the TS bases revision is contained in Attachment 2.3.0 Discussion of Change to the Application The Reference 1 application proposed to revise the UHS water temperature limit fromlOO°F to 1040F with consideration for instrument uncertainty.

The wording in SRs 4.7.4.a and 4.7.4.b is revised to be consistent with the LCO whenreferring to the LCO limit as being 'less than or equal to.'

Florida Power & Light Company L-2014-235 Supplement to License Amendment Request No. 231 Enclosure IPage 5 of 5A revision to new TS SR 4.7.4.b is proposed that will increase the frequency ofmonitoring UHS temperature when water temperature exceeds 1 00°F from at least onceevery 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months to at least once per hour. This increased frequency ensures that coolingcanal system temperature variations are appropriately captured.

The frequency is basedon experience with temperature trends over the course of each day.A new footnote

(**) is added to require instrument uncertainty to be added to theindicated value of UHS water temperature for verifying compliance with the LCO.The change to the requested revisions to TS 3/4.7.4 contained in this supplement wouldprovide additional restrictions on the verification of UHS water temperature.

Theserevisions to the proposed SRs do not alter the bases in the technical evaluation contained in the Reference I application.

FPL concluded therein that safe operation of both TurkeyPoint units would be assured with UHS water temperature up to 104'F. The conclusion derived from those analyses remains unchanged and bounds the revised request discussed herein.The revision to the TS changes requested in this supplement do not alter thedetermination of no significant hazards and the environmental considerations contained in the Reference 1 application because the revised request is bounded by the basis forchange to a higher UHS temperature limit contained in the application, and the proposedchanges to the TS SRs provide additional restrictions on verifying compliance with theUHS water temperature limit.4.0 Reference

1. Florida Power & Light Company (FPL) Letter L-2014-216, "License Amendment Request No. 231, Application to Revise Technical Specifications to Revise UltimateHeat Sink Temperature Limit," dated July 10, 2014 Enclosure 1Attachment ITurkey Point Units 3 and 4License Amendment Request No. 231 -Supplement Proposed Changes to Technical Specification 3/4.7.4Page 3/4 7-17 Mark-Up(one page)

PLANT SYSTEMS3/4.7.4 ULTIMATE HEAT SINKLIMITING CONDITION FOR OPERATION 3.7.4 The ultimate heat sink shall be OPERABLE with an average supply water temperature less than or equal to10IAPPLICABILITY:

MODES 1. 2, 3. and 4.ACTION:With the requirements of the above specification not satisfied, be in at least HOT STANDBY within 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months andin COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months . This ACTION shall be applicable to both unitssimultaneously.

AISURVEILLANCE REQUIREMENTS 4.7.4 The ultimate heat sink shall be determined OPEABL at l-astsupplywatef tep~tw o le 1PWithin W Ifitclmt.

oncc Dor ~i nourc DV vcrrn:ina mo ~.'orocio II<j1a. At least once per 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months by verifying the average supply water temperature*

isless than or equal to 1040F**.<jb. At least once per hour by verifying the average supply water temperature*

is lessthan or equal to 104°F**,

when water temperature exceeds 1OOOF**.*Portable monitors may be used to measure the temperature.

-ý--**lnstrument uncertainty shall be added to the indicated value. IITURKEY POINT -UNITS 3 & 43/4 7-17AMENDMENT NOS. 2-6 AND 266 1 Enclosure 1Attachment 2Turkey Point Units 3 and 4License Amendment Request No. 231- Supplement Change to Technical Specification Bases 3/4.7.4Mark-Up(three pages)

REVISION NO.: PROCEDURE TITLE: PAGE:10 TECHNICAL SPECIFICATION BASES CONTROL PROGRAM 147 of 192PROCEDURE NO.:0-ADM-536 TURKEY POINT PLANTATTACHMENT 2Technical Specification Bases(Page 131 of 176)3/4.7.2 Component Cooling Water SystemThe OPERABILITY of the Component Cooling Water System ensuresthat sufficient cooling capacity is available for continued operation ofsafety-related equipment during normal and accident conditions.

Theredundant cooling capacity of this system, assuming a single activefailure, is consistent with the assumptions used in the safety analyses.

One pump and two heat exchangers provide the heat removalcapability for accidents that have been analyzed.

3/4.7.3 Intake Cooling Water SystemThe OPERABILITY of the Intake Cooling Water System ensures thatsufficient cooling capacity is available for continued operation ofsafety-related equipment during normal and accident conditions.

Thedesign and operation of this system, assuming a single active failure,ensures cooling capacity consistent with the assumptions used in thesafety analyses.

3/4.7.4 Ultimate Heat Sink lower caseThe " " " perature in conjunction withtheU REQUIREMENTS f Technical Specification 3/4.. "capacity is available either:(1) To provide normal cooldown of the facility, or (2) To mitigate theeffects of accident conditions within acceptable limits.FPL has the option of monitoring the UHS temperature by monitoring the temperature in the ICW System piping going to the inlet of the CCWHeat Exchangers.

Monitoring the UHS temperature after the ICW butprior to CCW Heat Exchangers is considered to be equivalent totemperature monitoring before the ICW Pumps. The supply waterleaving the ICW Pumps will be mixed and therefore, it will berepresentative of the bulk UHS temperature to the CCW HeatExchanger inlet. The effects of the pump heating on the supply waterare negligible due to low ICW head and high water volume.Accordingly, monitoring the UHS temperature after the ICW Pumps butprior to the CCW Heat Exchangers provides an equivalent location formonitoring the UHS temperature.

REVISION NO.: PROCEDURE TITLE: PAGE:10 TECHNICAL SPECIFICATION BASES CONTROL PROGRAM 148 of 192PROCEDURE NO.:0-ADM-536 TURKEY POINT PLANTATTACHMENT 2Technical Specification Bases(Page 132 of 176)3/4.7.4 (Continued) 4With the implementation of the CCW Heat changer Performance Monitoring

Program, the limiting UHS tem rrature can be treated as avariable with an absolute upper limit of 100°F without compromising anymargin of safety. Demonstration of actual heat exchanger performance capability supports system operation with postulated canal temperatures Eý.lle ater than 100Z. Therefore, an upper Technical Specification limit of1WF is conservt-ti.-j]

3/4.7.5 Control Room Emerciency Ventilation SystemThe OPERABILITY of the Control Room Emergency Ventilation System(CREVS) ensures that: (1) The ambient air temperature does NOTexceed the allowable temperature for continuous duty rating for theequipment and instrumentation cooled by this system, and (2) TheControl Room envelope (CRE) will remain habitable for occupants during and following an uncontrolled release of radioactivity, hazardous chemicals, or smoke. The OPERABILITY of this system in conjunction with Control Room design provisions is based on limiting the radiation exposure to personnel occupying the CRE to 5 rem Total Effective DoseEquivalent (TEDE) for the duration of the accident.

The radiological limits are consistent with the requirements of 10 CFR Part 50.67. CREoccupants are protected from chemical hazards in accordance with thelimits of Regulatory Guide 1.78.

Insert AVerifying UHS water temperature at least once per 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months is adequate to ensure the limit of104'F is not exceeded when the water temperature is less than 100lF. Due to daily variations intemperature, when UHS water temperature exceeds 1 00°F the water temperature shall be verifiedat least once per hour to ensure that cooling canal system temperature variations areappropriately captured thus ensuring the Technical Specification limit is not exceeded.

For the UHS water temperature monitoring Surveillance Requirements, instrument measurement uncertainty is added to the indicated value to ensure the Technical Specification limit is notexceeded.

Enclosure 2Turkey Point Units 3 and 4License Amendment Request No. 231Response to Request for Additional Information (RAI)RAIs 1-3 Florida Power & Light Company L-2014-235 License Amendment Request No. 231 Enclosure 2Response to Request for Additional Information Page 1 of 2Turkey Point Units 3 and 4License Amendment Request No. 231Response to Request for Additional Information (1-3)Enclosure 2By letter dated July 10, 2014, as supplemented by letter dated July 17, 2014, Florida Power & LightCompany (FPL) submitted a license amendment request for the Turkey Point Nuclear Generating Unit Nos. 3 and 4 (Turkey Point). FPL requested revisions to the Turkey Point Technical Specifications (TSs), Section 3/4.7.4, "Ultimate Heat Sink."The U.S. Nuclear Regulatory Commission (NRC) staff reviewed the information provided by FPLand determined that it needs additional information to complete the review. The NRC staff's requestfor additional information (RAI) was provided to FPL in Reference 1 and the FPL response to RAIs1-3 is as follows.NRC RAI 1Title 10 of the Code of Federal Regulations (10 CFR), Paragraph 50.36(a) requires each applicant for a license to include proposed TSs as well as a summary statement of the bases or reasons forsuch specifications.

Please provide a copy of the TS Bases associated with the proposed TSs.FPL ResponseA copy of the TS bases associated with the proposed revision to the TS is contained in Attachment 2of Enclosure I in this correspondence.

NRC RAI 2Paragraph 50.36(c)(3) of 10 CFR states that Surveillance Requirements (SRs) "assure that thenecessary quality of systems and components is maintained, that facility operation will be withinsafety limits and that the limiting conditions for operation

[LCOs] will be met." The proposedfrequency for the new SR 4.7.4.b is "at least once per 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months when water temperature exceeds100°F [degrees Fahrenheit]."

Please provide a justification for the 6-hour frequency thatdemonstrates that the frequency assures that the necessary quality of systems and components ismaintained, that facility operation will be within safety limits, and that the LCO will be met.

Florida Power & Light Company L-2014-235 License Amendment Request No. 231 Enclosure 2Response to Request for Additional Information Page 2 of 2FPL ResponseAs discussed in Section 3.0 of Enclosure I in this correspondence and as shown in the marked-up TSpage in Attachment 1 of Enclosure 1, the proposed increased frequency of verifying ultimate heatsink (UHS) water temperature when 1 00°F is exceeded is revised to at least once per hour from atleast once per 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months . This increased frequency ensures that cooling canal system temperature variations are appropriately captured.

The frequency is based on experience with temperature trendsover the course of each day, and assures that the necessary quality of systems and components ismaintained, that facility operation will be within safety limits, and that the LCO will be met.NRC RAI 3The text referring to the water temperature limit is inconsistent between the LCO 3.7.4 statement andSRs 4.7.4.a and b. The LCO statement uses the text "less than or equal to 104'F," whereas SR4.7.4.a uses the text "its limit," and SR 4.7.4.b uses the text "the limit." Surveillance requirements assure that the LCO will be met. Therefore, please propose new text referring to the watertemperature limit in the SRs that is consistent with the LCO text.FPL ResponseAs discussed in Sections 2.2 and 3.0 of Enclosure I in this correspondence and as shown in themarked-up TS page in Attachment I of Enclosure 1, the wording of TS SR 4.7.4.a and 4.7.4.b arerevised to be consistent with the wording of the LCO. The LCO and SRs state "...less than or equalto..." the 104'F limit.Reference

1. Email from NRC Project Manager for Turkey Point to FPL, "Turkey Point 3 and 4 Request forAdditional Information

-LAR 231 (TAC MF4392 and MF4393),"

dated July 18, 2014 (RAIs 1-3) 10 CFR 50.90L-2014-235 July 22, 2014U.S. Nuclear Regulatory Commission ATTN: Document Control DeskWashington, DC 20555-0001 Turkey Point Units 3 and 4Docket Nos. 50-250 and 50-251Renewed Facility Operating License Nos. DPR-31 and DPR-41'