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| number = ML110810467 | | number = ML110810467 | ||
| issue date = 04/14/2011 | | issue date = 04/14/2011 | ||
| title = | | title = Summary of Meeting with Entergy Operations, Inc. to Discuss Arkansas Nuclear One, Unit 1 License Amendment Request to Revise Technical Specifications Related to Completion Times for One Inoperable RCS Cooling Loop | ||
| author name = Kalyanam N | | author name = Kalyanam N | ||
| author affiliation = NRC/NRR/DORL/LPLIV | | author affiliation = NRC/NRR/DORL/LPLIV | ||
| Line 18: | Line 18: | ||
=Text= | =Text= | ||
{{#Wiki_filter:UNITED NUCLEAR REGULATORY WASHINGTON, D.C. 20555-0001 April 14, 2011 LICENSEE: | {{#Wiki_filter:UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 April 14, 2011 LICENSEE: Entergy Operations, Inc. | ||
Entergy Operations, Inc. FACILITY: | FACILITY: Arkansas Nuclear One, Unit 1 | ||
Arkansas Nuclear One, Unit 1 | |||
==SUBJECT:== | ==SUBJECT:== | ||
==SUMMARY== | ==SUMMARY== | ||
OF MARCH 15, 2011, MEETING WITH ENTERGY OPERATIONS, INC., ON LICENSE AMENDMENT REQUEST FOR CHANGES TO TECHNICAL SPECIFICATIONS RELATED TO COMPLETION TIMES FOR ONE INOPERABLE REACTOR COOLANT SYSTEM COOLING LOOP AT ARKANSAS NUCLEAR ONE, UNIT 1 (TAC NO. ME4563) On March 15,2011, a Category 1 public meeting was held between the U.S. Nuclear Regulatory Commission (NRC) and representatives of Entergy Operations, Inc. (Entergy, the licensee), for Arkansas Nuclear One, Unit 1 (ANO-1) at NRC Headquarters, One White Flint North, 11555 Rockville Pike, Rockville, Maryland. | OF MARCH 15, 2011, MEETING WITH ENTERGY OPERATIONS, INC., ON LICENSE AMENDMENT REQUEST FOR CHANGES TO TECHNICAL SPECIFICATIONS RELATED TO COMPLETION TIMES FOR ONE INOPERABLE REACTOR COOLANT SYSTEM COOLING LOOP AT ARKANSAS NUCLEAR ONE, UNIT 1 (TAC NO. ME4563) | ||
The related documents for the subject license amendment request (LAR) are the application dated August 24, 2010 (Agencywide Documents Access and Management System (ADAMS) Accession No. | On March 15,2011, a Category 1 public meeting was held between the U.S. Nuclear Regulatory Commission (NRC) and representatives of Entergy Operations, Inc. (Entergy, the licensee), for Arkansas Nuclear One, Unit 1 (ANO-1) at NRC Headquarters, One White Flint North, 11555 Rockville Pike, Rockville, Maryland. The related documents for the subject license amendment request (LAR) are the application dated August 24, 2010 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML102371014) and the supplemental letters dated November 12, 2010, and February 28, 2011 (ADAMS Accession Nos. ML103160175 and ML110590738, respectively). A list of attendees is enclosed. | ||
A list of attendees is enclosed. | The LAR discusses the licensee's proposal to revise several Technical Specifications (TSs) to permit a greater time period for one of two required decay heat removal (DHR) loops to be inoperable. The affected TSs are applicable in lower modes of operation (Modes 4, 5, and 6). | ||
The LAR discusses the licensee's proposal to revise several Technical Specifications (TSs) to permit a greater time period for one of two required decay heat removal (DHR) loops to be inoperable. | The licensee offered in defense of the LAR reasons such as 1) the requested 48-hour completion time (CT) is consistent with the same pump, low pressure injection pump TS; 2) the 48-hour CT is conservative with respect to the Mode 3 DHR CT of 72 hours; and 3) in Mode 4, other means of heat removal are available. The licensee's slide presentation is available at ADAMS Accession No. ML110750416. | ||
The affected TSs are applicable in lower modes of operation (Modes 4, 5, and 6). The licensee offered in defense of the LAR reasons such as 1) the requested 48-hour completion time (CT) is consistent with the same pump, low pressure injection pump TS; 2) the 48-hour CT is conservative with respect to the Mode 3 DHR CT of 72 hours; and 3) in Mode 4, other means of heat removal are available. | The NRC requested that the licensee discuss the following items in its formal response to the requests for additional information (RAls): | ||
The licensee's slide presentation is available at ADAMS Accession No. | (1 ) Inadequacy of the information used to support the CT changes from "immediately" to "48 hours" in TS 3.4.6, "RCS [Reactor Coolant System] Loops - MODE 4," for conditions with one required DHR system in operation and one DHR system inoperable. | ||
The NRC requested that the licensee discuss the following items in its formal response to the requests for additional information (RAls): (1 ) Inadequacy of the information used to support the CT changes from "immediately" to "48 hours" in TS 3.4.6, "RCS [Reactor Coolant System] Loops -MODE 4," for conditions with one required DHR system in operation and one DHR system inoperable. RAI response submitted by letter dated February 28, 2011, with a focus on a detailed discussion of the time-to-boil (ITB) estimate regarding worst-case identification and the assumption regarding thermodynamic mixing in the RCS inventory used in the ITB estimate. | (2) RAI response submitted by letter dated February 28, 2011, with a focus on a detailed discussion of the time-to-boil (ITB) estimate regarding worst-case identification and the assumption regarding thermodynamic mixing in the RCS inventory used in the ITB estimate. | ||
-2 One of the ways utilities apply NRC Generic Letter 88-17, "Loss of Decay Heat Removal," is calculating ITS for their outage configurations, using this as a surrogate for configuration risk level. The proposed TS elevates the significance of this calculation making it a basis for acceptability of a TS restoration time. Since the licensee wants to put rrs into its licensing basis, the NRC staff questions details of the calculation, its basis, and consideration of local boiling effects and margin levels. Members of the public were in attendance via the teleconference bridge. Public Meeting Feedback forms were not received. | |||
Subsequently, by letter dated March 24, 2011 (ADAMS Accession No. | -2 (3) One of the ways utilities apply NRC Generic Letter 88-17, "Loss of Decay Heat Removal," is calculating ITS for their outage configurations, using this as a surrogate for configuration risk level. The proposed TS elevates the significance of this calculation making it a basis for acceptability of a TS restoration time. Since the licensee wants to put rrs into its licensing basis, the NRC staff questions details of the calculation, its basis, and consideration of local boiling effects and margin levels. | ||
N. Kalyanam, Project Manager Plant Licensing Branch IV Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. | Members of the public were in attendance via the teleconference bridge. Public Meeting Feedback forms were not received. | ||
List of cc w/encl: Distribution via LIST OF MARCH 15.2011, MEETING WITH ENTERGY OPERATIONS, INC. LICENSE AMENDMENT REQUEST -CHANGES TO TECHNICAL SPECIFICATIONS RELATED TO COMPLETION TIMES FOR ONE INOPERABLE DECAY HEAT REMOVAL LOOP ARKANSAS NUCLEAR ONE, UNIT 1 TAC NO. ME4563 Nuclear Regulatory Commission R. Elliott, NRRIDIRS/ITSB M. Markley, NRRlDORULPL4 S. Sun, NRR/DSS/SRXB A. Howe, NRR/DRAIAPLA R. Grover, NRRlDIRS/ITSB C. Schulten, NRR/DIRSIITSB (Part-time) | Subsequently, by letter dated March 24, 2011 (ADAMS Accession No. ML110840216), Entergy requested to withdraw the application from U.S. Nuclear Regulatory Commission review. | ||
Please direct any inquiries to Kaly N. Kalyanam at 301-415-1480 or kaly.kalyanam@nrc.gov. | |||
N. Kalyanam, Project Manager Plant Licensing Branch IV Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-313 | |||
==Enclosure:== | |||
List of Attendees cc w/encl: Distribution via Listserv | |||
LIST OF ATTENDEES MARCH 15.2011, MEETING WITH ENTERGY OPERATIONS, INC. | |||
LICENSE AMENDMENT REQUEST - CHANGES TO TECHNICAL SPECIFICATIONS RELATED TO COMPLETION TIMES FOR ONE INOPERABLE DECAY HEAT REMOVAL LOOP ARKANSAS NUCLEAR ONE, UNIT 1 TAC NO. ME4563 Nuclear Regulatory Commission R. Elliott, NRRIDIRS/ITSB M. Markley, NRRlDORULPL4 S. Sun, NRR/DSS/SRXB A. Howe, NRR/DRAIAPLA R. Grover, NRRlDIRS/ITSB C. Schulten, NRR/DIRSIITSB (Part-time) | |||
G. Waig, NRRIDIRSIITSB (Teleconferenced) | G. Waig, NRRIDIRSIITSB (Teleconferenced) | ||
N. Kalyanam, NRR/DORULPL4 Entergy Operations, Inc. Bryan Ford Richard Harris Dan Fouts James Keys Stephanie Pyle David Bice Enclosure | N. Kalyanam, NRR/DORULPL4 Entergy Operations, Inc. | ||
-2 One of the ways utilities apply NRC Generic Letter 88-17, "Loss of Decay Heat Removal," is calculating TIB for their outage configurations, using this as a surrogate for configuration risk level. The proposed TS elevates the significance of this calculation making it a basis for acceptability of a TS restoration time. Since the licensee wants to put TIB into its licensing basis, the NRC staff's questions on details of the calculation, its basis, and even consideration of local boiling effects and margin levels. Members of the public were in attendance via the teleconference bridge. Public Meeting Feedback forms were not received. | Bryan Ford Richard Harris Dan Fouts James Keys Stephanie Pyle David Bice Enclosure | ||
Subsequently, by letter dated March 24,2011 (ADAMS Accession No. | |||
List of cc w/encl: Distribution via PUBLIC RidsOgcRp LPL4 Reading RidsRgn4MailCenter RidsAcrsAcnw_MailCTR CSteger, RidsNrrDirsltsb VDricks, OPA RidsNrrDorlLpl4 JTrapp, EDO RidsNrrDraApla | -2 (3) One of the ways utilities apply NRC Generic Letter 88-17, "Loss of Decay Heat Removal," is calculating TIB for their outage configurations, using this as a surrogate for configuration risk level. The proposed TS elevates the significance of this calculation making it a basis for acceptability of a TS restoration time. Since the licensee wants to put TIB into its licensing basis, the NRC staff's questions on details of the calculation, its basis, and even consideration of local boiling effects and margin levels. | ||
Members of the public were in attendance via the teleconference bridge. Public Meeting Feedback forms were not received. | |||
Subsequently, by letter dated March 24,2011 (ADAMS Accession No. ML110840216), Entergy requested to withdraw the application from U.S. Nuclear Regulatory Commission review. | |||
Please direct any inquiries to Kaly N. Kalyanam at 301-415-1480 or kaly.kalyanam@nrc.gov. | |||
IRA! | |||
N. Kalyanam, Project Manager Plant Licensing Branch IV Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-313 | |||
==Enclosure:== | |||
List of Attendees cc w/encl: Distribution via Listserv DISTRIBUTION: | |||
PUBLIC RidsOgcRp Resource LPL4 Reading RidsRgn4MailCenter Resource RidsAcrsAcnw_MailCTR Resource CSteger, NRR RidsNrrDirsltsb Resource VDricks, OPA RIV RidsNrrDorlLpl4 Resource JTrapp, EDO RIV RidsNrrDraApla Resource RGrover, NRRIDIRS/ITSB RidsNrrDssSpbp Resource CSchulten, NRR/DIRS/ITSB RidsNrrDssSrxb Resource GWaig, NRR/DIRSIITSB RidsNrrPMWaterford Resource SSun, NRR/DSS/SRXB RidsNrrLA.IBurkhardt Resource | |||
. Nos. MeetmQ ADAMS A ccesslon . Nof Ice ML110600265 MeefIng Summary ML110810467 , Handou t S ML110750416 OFFICE DORLlLPL4/PM DORL/LPL4/LA NRR/DRAIAPLAlBC NRR/DIRS/ITSB/BC SDinsmore for NAME NKalyanam JBurkhardt DHarrison REliiott DATE 3/25/11 3/25/11 4/5111 4/13/11 OFFICE NRR/DSS/SRXB/BC DORLlLPL4/BC DORLlLPL4/PM NAME AUlses IMMarkley NKalyanam DATE 4/5/11 4/14/11 4/14/11 OFFICIAL RECORD COpy}} | |||
Latest revision as of 08:59, 6 December 2019
| ML110810467 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 04/14/2011 |
| From: | Kalyanam N Plant Licensing Branch IV |
| To: | |
| Kalyanam N, NRR/DLPM, 415-1480 | |
| References | |
| TAC ME4563 | |
| Download: ML110810467 (4) | |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 April 14, 2011 LICENSEE: Entergy Operations, Inc.
FACILITY: Arkansas Nuclear One, Unit 1
SUBJECT:
SUMMARY
OF MARCH 15, 2011, MEETING WITH ENTERGY OPERATIONS, INC., ON LICENSE AMENDMENT REQUEST FOR CHANGES TO TECHNICAL SPECIFICATIONS RELATED TO COMPLETION TIMES FOR ONE INOPERABLE REACTOR COOLANT SYSTEM COOLING LOOP AT ARKANSAS NUCLEAR ONE, UNIT 1 (TAC NO. ME4563)
On March 15,2011, a Category 1 public meeting was held between the U.S. Nuclear Regulatory Commission (NRC) and representatives of Entergy Operations, Inc. (Entergy, the licensee), for Arkansas Nuclear One, Unit 1 (ANO-1) at NRC Headquarters, One White Flint North, 11555 Rockville Pike, Rockville, Maryland. The related documents for the subject license amendment request (LAR) are the application dated August 24, 2010 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML102371014) and the supplemental letters dated November 12, 2010, and February 28, 2011 (ADAMS Accession Nos. ML103160175 and ML110590738, respectively). A list of attendees is enclosed.
The LAR discusses the licensee's proposal to revise several Technical Specifications (TSs) to permit a greater time period for one of two required decay heat removal (DHR) loops to be inoperable. The affected TSs are applicable in lower modes of operation (Modes 4, 5, and 6).
The licensee offered in defense of the LAR reasons such as 1) the requested 48-hour completion time (CT) is consistent with the same pump, low pressure injection pump TS; 2) the 48-hour CT is conservative with respect to the Mode 3 DHR CT of 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />; and 3) in Mode 4, other means of heat removal are available. The licensee's slide presentation is available at ADAMS Accession No. ML110750416.
The NRC requested that the licensee discuss the following items in its formal response to the requests for additional information (RAls):
(1 ) Inadequacy of the information used to support the CT changes from "immediately" to "48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br />" in TS 3.4.6, "RCS [Reactor Coolant System] Loops - MODE 4," for conditions with one required DHR system in operation and one DHR system inoperable.
(2) RAI response submitted by letter dated February 28, 2011, with a focus on a detailed discussion of the time-to-boil (ITB) estimate regarding worst-case identification and the assumption regarding thermodynamic mixing in the RCS inventory used in the ITB estimate.
-2 (3) One of the ways utilities apply NRC Generic Letter 88-17, "Loss of Decay Heat Removal," is calculating ITS for their outage configurations, using this as a surrogate for configuration risk level. The proposed TS elevates the significance of this calculation making it a basis for acceptability of a TS restoration time. Since the licensee wants to put rrs into its licensing basis, the NRC staff questions details of the calculation, its basis, and consideration of local boiling effects and margin levels.
Members of the public were in attendance via the teleconference bridge. Public Meeting Feedback forms were not received.
Subsequently, by letter dated March 24, 2011 (ADAMS Accession No. ML110840216), Entergy requested to withdraw the application from U.S. Nuclear Regulatory Commission review.
Please direct any inquiries to Kaly N. Kalyanam at 301-415-1480 or kaly.kalyanam@nrc.gov.
N. Kalyanam, Project Manager Plant Licensing Branch IV Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-313
Enclosure:
List of Attendees cc w/encl: Distribution via Listserv
LIST OF ATTENDEES MARCH 15.2011, MEETING WITH ENTERGY OPERATIONS, INC.
LICENSE AMENDMENT REQUEST - CHANGES TO TECHNICAL SPECIFICATIONS RELATED TO COMPLETION TIMES FOR ONE INOPERABLE DECAY HEAT REMOVAL LOOP ARKANSAS NUCLEAR ONE, UNIT 1 TAC NO. ME4563 Nuclear Regulatory Commission R. Elliott, NRRIDIRS/ITSB M. Markley, NRRlDORULPL4 S. Sun, NRR/DSS/SRXB A. Howe, NRR/DRAIAPLA R. Grover, NRRlDIRS/ITSB C. Schulten, NRR/DIRSIITSB (Part-time)
G. Waig, NRRIDIRSIITSB (Teleconferenced)
N. Kalyanam, NRR/DORULPL4 Entergy Operations, Inc.
Bryan Ford Richard Harris Dan Fouts James Keys Stephanie Pyle David Bice Enclosure
-2 (3) One of the ways utilities apply NRC Generic Letter 88-17, "Loss of Decay Heat Removal," is calculating TIB for their outage configurations, using this as a surrogate for configuration risk level. The proposed TS elevates the significance of this calculation making it a basis for acceptability of a TS restoration time. Since the licensee wants to put TIB into its licensing basis, the NRC staff's questions on details of the calculation, its basis, and even consideration of local boiling effects and margin levels.
Members of the public were in attendance via the teleconference bridge. Public Meeting Feedback forms were not received.
Subsequently, by letter dated March 24,2011 (ADAMS Accession No. ML110840216), Entergy requested to withdraw the application from U.S. Nuclear Regulatory Commission review.
Please direct any inquiries to Kaly N. Kalyanam at 301-415-1480 or kaly.kalyanam@nrc.gov.
IRA!
N. Kalyanam, Project Manager Plant Licensing Branch IV Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-313
Enclosure:
List of Attendees cc w/encl: Distribution via Listserv DISTRIBUTION:
PUBLIC RidsOgcRp Resource LPL4 Reading RidsRgn4MailCenter Resource RidsAcrsAcnw_MailCTR Resource CSteger, NRR RidsNrrDirsltsb Resource VDricks, OPA RIV RidsNrrDorlLpl4 Resource JTrapp, EDO RIV RidsNrrDraApla Resource RGrover, NRRIDIRS/ITSB RidsNrrDssSpbp Resource CSchulten, NRR/DIRS/ITSB RidsNrrDssSrxb Resource GWaig, NRR/DIRSIITSB RidsNrrPMWaterford Resource SSun, NRR/DSS/SRXB RidsNrrLA.IBurkhardt Resource
. Nos. MeetmQ ADAMS A ccesslon . Nof Ice ML110600265 MeefIng Summary ML110810467 , Handou t S ML110750416 OFFICE DORLlLPL4/PM DORL/LPL4/LA NRR/DRAIAPLAlBC NRR/DIRS/ITSB/BC SDinsmore for NAME NKalyanam JBurkhardt DHarrison REliiott DATE 3/25/11 3/25/11 4/5111 4/13/11 OFFICE NRR/DSS/SRXB/BC DORLlLPL4/BC DORLlLPL4/PM NAME AUlses IMMarkley NKalyanam DATE 4/5/11 4/14/11 4/14/11 OFFICIAL RECORD COpy