1CAN121204, Arkansas Nuclear One, Unit 1, Response to Request for Additional Information, Request for Extension of Enforcement Discretion: Difference between revisions

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{{Adams
#REDIRECT [[1CAN121204, Response to Request for Additional Information, Request for Extension of Enforcement Discretion]]
| number = ML12353A617
| issue date = 12/18/2012
| title = Arkansas Nuclear One, Unit 1, Response to Request for Additional Information, Request for Extension of Enforcement Discretion
| author name = Schwarz C J
| author affiliation = Entergy Operations, Inc
| addressee name =
| addressee affiliation = NRC/Document Control Desk, NRC/NRR
| docket = 05000313
| license number = DPR-051
| contact person =
| case reference number = 1CAN121204
| document type = Letter type:
| page count = 20
}}
 
=Text=
{{#Wiki_filter:1CAN121204  
 
December 18, 2012
 
U.S. Nuclear Regulatory Commission
 
Attn: Document Control Desk Washington, DC  20555-0001
 
==SUBJECT:==
Response to Request for Additional Information Request for Extension of Enforcement Discretion
 
Arkansas Nuclear One - Unit 1
 
Docket No. 50-313 License No. DPR-51
 
==References:==
: 1. Entergy letter dated August 23, 2012, "Request for Extension of Enforcement Discretion, Arkansas Nuclear One - Unit 1" (1CAN081202)
(ML12236A407)
: 2. NRC email dated November 5, 2012, "RAI Regarding the Revision of the Regulatory Commitment Relating to the Submittal of 10 CFR 50.48(c) LAR (TAC No. ME9429)" (ML12310A462)
: 3. Staff Requirements Memorandum SECY-12-0031, "Enforcement Alternatives for Sites that Indicate Additional Time Required to Submit Their License Amendment Requests to Transition to 10 CFR 50.48(c) National Fire Protection Association Standard 805," dated February 24, 2012 (ML12025A349)
: 4. Entergy letter dated November 15, 2012, "Request for Extension of Enforcement Discretion, Arkansas Nuclear One - Unit 1" (1CAN111204)
: 5. NRC email dated December 6, 2012, "RAI Associated with ANO-1 NFPA 805 Enforcement Discretion Extension Request" (TAC No. ME9429)
: 6. Entergy letter dated December 13, 2012, "Response to Request for Additional Information - Request for Extension of Enforcement Discretion, Arkansas Nuclear One - Unit 1" (1CAN121202)
: 7. NRC email dated December 18, 2012, "RAI Associated with ANO-1 NFPA 805 Enforcement Discretion Extension Request" (TAC No. ME9429)
Entergy Operations, Inc. 1448 S.R. 333 Russellville, AR  72802 Tel  479-858-3110 Christopher J. Schwarz Vice President - Operations Arkansas Nuclear One
 
1CAN121204 Page 2 of 3
 
==Dear Sir or Madam:==
 
By letter dated August 23, 2012 (Reference 1), Entergy Operations, Inc. (Entergy) requested an extension to enforcement discretion related to fire protection issues associated with Renewed Facility Operating License No. DPR-51 for Arkansas Nuclear One, Unit 1 (ANO-1). The original enforcement discretion was based, in part, on submittal of an ANO-1 request to adopt a new fire protection licensing basis which complies with the requirements in 10 CFR 50.48(a),
10 CFR 50.48(c), and the guidance in Regulatory Guide 1.205, "Risk-Informed Performance-Based Fire Protection for Existing Light-Water Nuclear Power Plants," no later than August 31, 2012. Due to circumstances described in the Reference 1 letter, Entergy has requested an extension of enforcement discretion related to fire protection issues for ANO-1 based, in part, on submitting the aforementioned ANO-1 License Amendment Request (LAR) implementing 10 CFR 50.48(c) prior to August 31, 2013. However, Enclosure 1 of this letter extends this request to January 31, 2014. Per the enforcement discretion policy, once the request is submitted and accepted, the enforcement discretion would then continue until the NRC dispositions the LAR.
 
The NRC notified Entergy on November 5, 2012 (Reference 2), of a request for additional information (RAI) necessary to support approval of Entergy's request for an extension of enforcement discretion. Entergy responded to this request via letter dated November 15, 2012 (Reference 4).
The NRC notified Entergy on December 6, 2012 (Reference 5), of a request for additional information (RAI) necessary to support approval of Entergy's request for an extension of enforcement discretion. Entergy responded to this request via letter dated December 13, 2012 (Reference 6).
The NRC notified Entergy on December 18, 2012 (Reference 7), of a request for additional information (RAI) necessary to support approval of Entergy's request for an extension of enforcement discretion. The Entergy letter (Reference 6) requested a revised LAR submittal date of January 31, 2014; however, the internal LAR completion schedule timeline included in  of the Reference 6 letter retained the Entergy goal of submitting the LAR by August 31, 2013. Having two different dates for LAR submittal could create confusion. Therefore, Entergy is re-submitting the Reference 6 letter in its entirety, revising the internal schedule to match the January 31, 2014, LAR submittal commitment date. Entergy requests the NRC replace the December 13, 2012 (Reference 6), letter with this letter.
 
Entergy requests the NRC issue a Confirmatory Order approving the requested enforcement discretion extension for ANO-1 as permitted by Reference 3.
 
This letter contains no new commitments; however the commitment date provided in the August 23, 2012, letter is superseded as reflected in Enclosures 1 and 2. Should you have any questions concerning this letter, or require additional information, please contact Stephenie Pyle at 479-858-4704.
 
1CAN121204 Page 3 of 3
 
I declare under penalty of perjury that the foregoing is true and correct.
Executed on December 18, 2012.
 
Sincerely, ORIGINAL SIGNED BY MICHAEL R. CHISUM FOR CHRISTOPHER J. SCHWARZ
 
CJS/dbb 
 
==Enclosure:==
: 1. Response to RAI Associated with ANO-1 NFPA 805 Enforcement Discretion Extension Request 2. List of Regulatory Commitments
 
cc: Mr. Elmo E. Collins Regional Administrator U. S. Nuclear Regulatory Commission Region IV  1600 East Lamar Boulevard  Arlington, TX  76011-4511
 
NRC Senior Resident Inspector Arkansas Nuclear One P. O. Box 310 London, AR  72847
 
U. S. Nuclear Regulatory Commission Attn: Mr. Kaly Kalyanam MS O-8B1 One White Flint North 11555 Rockville Pike
 
Rockville, MD 20852
 
Mr. Bernard R. Bevill Arkansas Department of Health    Radiation Control Section 4815 West Markham Street Slot #30 Little Rock, AR 72205 Enclosure 1 to 1CAN121204 Response to RAI Associated with ANO-1 NFPA 805 Enforcement Discretion Extension Request to 1CAN121204
 
Page 1 of 3 Response to RAI Associated with ANO-1 NFPA 805 Enforcement Discretion Extension Request By email dated December 6, 2012, the NRC notified Entergy Operations, Inc. (Entergy) of a request for additional information (RAI) related to Entergy's August 23, 2012, request for an extension of enforcement discretion for fire protection issues for Arkansas Nuclear One, Unit 1 (ANO-1). The questions and responses associated with the RAI are provided below.
: 1) The completion dates for the modifications to resolve the MSO circuit issues do not address this fire protection legacy issue in a timely manner.
Entergy Response Entergy's response to RAI Question 1.a in letter dated November 15, 2012 (1CAN111204), provided a list of modifications previously completed, which eliminated a significant number of operator manual actions (OMAs). The completion dates for remaining modifications supporting the ANO-1 transition to NFPA 805 were provided in Entergy's response to RAI Question 1.d and Attachment 2 of the aforementioned November 15, 2012, letter. Most of the "design complete" dates were established based on completing the modification packages in advance of the refueling outage in which the modification would be installed. The dates were essentially the "drop-dead" date for meeting refueling outage planning requirements and did not reflect the potential that many of the packages would likely complete in advance of these dates.
 
As a result, Entergy has modified Attachment 2 of the November 15, 2012, letter and included the revised version as Attachment 1 of this enclosure. The revised dates associated with the completion of design modification packages are based on the importance of the modification. The importance was determined using the "ranking" of the modification provided in Attachment 1 (Table S-1) of the November 15, 2012, letter (high, medium, low). The rankings are associated with the number of fire areas impacted and whether the condition is associated with Information Notice (IN) 92-18, "Potential for Loss of Remote Shutdown Capability During a Control Room Fire."
 
The preliminary schedule (based on importance) was then developed considering the
 
following:  The general number of operator actions associated with the modifications  Whether the modification required unit shutdown for implementation  For shutdown modifications, the safety train scheduled for maintenance during a given refueling outage  ANO, Unit 2 (ANO-2) NFPA 805 modification support (ANO-2 transition to NFPA-805 precedes ANO-1 transition)  Support of the ANO-2 NFPA 805 audit (anticipated in late 2 nd quarter 2013), followed by support of the ANO-1 NFPA 805 audit (~6 months following submittal/acceptance of the ANO-1 License Amendment Request (LAR))  Response to ANO-1 and ANO-2 NFPA 805 RAIs  Other significant/important modifications unrelated to NFPA 805  The complexity of the design    to 1CAN121204
 
Page 2 of 3 In light of the above, a calendar quarter based timeline-type schedule is included in Attachment 2 of this letter which includes major ANO-2 NFPA 805 items that have a significant impact on ANO-1 resources. Based on the information provided in the attachments to this letter, NFPA 805 related modification design and installation is expected to proceed in a safe and efficient manner.
 
Not depicted in the attached schedules are the details associated with each NFPA 805 modification that can be partially implemented/installed non-outage. Scheduling non-outage partial installations is not possible until the design packages are complete and then, based on the date the package is completed, a determination of the next available non-outage work-week window for which the specific train or component is "open" for maintenance can be performed. The controls placed on such scheduling are intended to ensure maintenance and modifications are performed in a manner that minimizes the overall risk to plant safety.
Entergy fully recognizes the safety significance and importance of completing all NFPA 805 related modifications as soon as practical. Based on the above, Entergy believes the current schedule and the safety-conscience scheduling process employed will ensure reasonable progress in support of final transition to NFPA 805, irrespective of the date in which the ANO-1 NFPA 805 LAR is submitted for NRC review and approval.
: 2) The proposed LAR completion schedule identifies "potential unforeseen circumstances" that should be considered as "certain activities" when scheduling their new commitment
 
date. Entergy Response Entergy's response to RAI Question 1.e of the aforementioned November 15, 2012, letter provided a list of potential circumstances that could delay final development and submittal of the ANO-1 NFPA 805 LAR. Based on the listing, Entergy proposed a revised LAR submittal date of August 31, 2013, and subsequently, a request to extend the ANO-1 enforcement discretion for fire protection issues accordingly. After further consideration, Entergy has determined that the proposed submittal date is highly aggressive and cannot be reasonably assured, especially if several of the noted circumstances are realized. For
 
completeness, the previous listing of potential circumstances provided to the NRC in the November 15, 2012, letter is included below, with the exception of the line item associated with conflicts created by final submittal of the ANO-2 NFPA 805 LAR. Note, however, that development of the ANO-2 LAR has delayed progress related to the ANO-1 LAR.
 
- Spring 2013 ANO-1 refueling outage - New NRC concerns or industry issues associated with NFPA 805 submittals
- Preparation for NFPA 805 audit of ANO-2, which is expected to occur in the 2 nd quarter 2013 following the ANO-1 refueling outage - Resources needed to support potential ANO-2 NFPA 805 related NRC RAIs (both acceptance review RAIs and audit related RAIs) - Other significant emergent site issues that could require support from the ANO NFPA 805 resource team to 1CAN121204
 
Page 3 of 3 The spring 2013 ANO-1 refueling outage requires significant engineering resources pre-outage, during the outage, and for about 1-2 months following the outage to implement and close associated modification packages. Although not currently scheduled, the ANO-2 NFPA 805 audit is anticipated late in the 2nd quarter of 2013, just after outage related engineering resources become available. These two items alone create a significant challenge to meeting an August 31, 2013, LAR submittal date. Should all of the remaining items be realized over this same period or immediately thereafter, a substantial impact to final LAR development could occur. Therefore, giving proper respect to the aggregate of these potential circumstances, Entergy proposes to revise the ANO-1 NFPA 805 LAR submittal date to January 31, 2014. Entergy's request for an extension of enforcement discretion for ANO-1 fire protection issues would likewise be extended to support this commitment. Per the enforcement discretion policy, once the LAR is submitted and
 
accepted, the enforcement discretion would then continue until the NRC dispositions the LAR. Nevertheless, Entergy will continue to progress toward completion of the ANO-1 LAR as efficiently as practical. As a result, Enclosure 2 of Entergy's August 23, 2012, letter, which contained the commitment for submittal of the ANO-1 NFPA 805 LAR by August 31, 2013, is modified by Enclosure 2 of this letter, committing to a new due date of January 31, 2014.
The total risk associated with the current plant will be addressed by the continuing compensatory measures currently applied for the existing Appendix R open items. In general, the reduced number of feasible operator manual actions (due to plant modifications completed since 2005), and the on-going mixture of roving and continuous fire watches will be maintained until the proposed modifications are implemented to remove the need for these interim compensatory measures. The primary contributor to the overall plant risk is Fire Area G, where the Alternate Shutdown measures for Appendix R are concentrated. Existing plant procedures for post-fire safe shutdown focus on this area. Operations personnel are currently trained and able to promptly respond to any postulated fire in this critical area, now well defined by the NFPA 805 risk analysis.
 
Attachments 1. ANO-1 NFPA 805 Modifications Design and Installation Schedule 2. ANO-1 NFPA 805 Modifications Timeline
 
Attachment 1 ANO-1 NFPA 805 Modifications Design and Installation Schedule
  , Attachment 1 1CAN121204
 
Page 1 of 3 ANO-1 NFPA 805 Modifications Design and Installation Schedule The conceptual design stage includes a study of controlled drawings and physical walk-downs to ensure the modification is feasi ble. With respect to the NFPA 805 transition project, this stage includes probabilistic risk assessment (PRA) engineer involvement t o ensure conceptual designs meet the PRA-intended function. Following this stage, a detailed engineering study is performed, whi ch provides a comprehensive description of the proposed design approach and a detailed technical scope evaluation of the project. The engineering study also provides definitive design and installation cost information as well as schedule information. The goal is to produce a document that clearly identifies the design scope, cost, and schedule. The final design phase follows these stages through completion of the detailed modification package. PRA engineer review and approval is required prior to final approval of the overall design modification package.
 
Modification Description (based on ANO-1 LAR Table S-1 numbering)
Conceptual Design Complete Engineering Study Complete Final Design Package Complete Installation Complete S1-1 Additional Auxiliary Feedwater (AFW) source to Steam Generators Complete 03/01/2013 07/01/2015 1R26 / 1R27 S1-2 thru S1-6 Provide redundant DC control power to Switchgear A-1, A-2, A-3, H-1 and H-2 and re-route some cabling Complete 10/25/2013 07/01/2014 1R26 / 1R27 S1-7 and S1-8 4160V AC breaker circuit modification to prevent spurious operation of A-309 and A-409 Complete 10/25/2013 07/01/2014 1R26 / 1R27 S1-9 Incipient Fire Detection for Control Room Panel C20 Complete 09/06/2013 12/15/2013 1R25 / 1R26 S1-10 Air Operated Valve (AOV) CV-1052 (Quench Tank Drain) circuit modification to preclude spurious operation Complete 08/16/2013 03/01/2015 1R26 S1-11 Motor Operated Valve (MOV) CV-1053 (Quench Tank Drain) circuit modification to preclude spurious operation Complete 08/16/2013 07/01/2015 1R27 S1-12 MOV CV-1221 (Letdown Isolation) circuit modification to preclude spurious operation Complete 07/01/2013 12/15/2013 1R25  , Attachment 1 1CAN121204
 
Page 2 of 3 Modification Description (based on ANO-1 LAR Table S-1 numbering)
Conceptual Design Complete Engineering Study Complete Final Design Package Complete Installation Complete S1-13 MOV CV-1405 (Emergency Core Cooling Reactor Building Sump Suction) circuit modification to preclude spurious operation Complete 07/01/2013 12/15/2013 1R25 S1-14 MOV CV-1406 (Emergency Core Cooling Reactor Building Sump Suction) circuit modification to preclude spurious operation Complete 07/01/2013 12/15/2013 1R25 S1-15 MOV CV-3643 (Service Water Auxiliary Cooling Water Supply) circuit modification to preclude spurious operationComplete 07/01/2013 12/15/2013 1R25 S1-16 AOV CV-4400 (Reactor Building Sump Drain) circuit modification to preclude spurious operation Complete 08/16/2013 03/01/2015 1R26 S1-17 MOV CV-4446 (Reactor Building Sump Drain) circuit modification to preclude spurious operation Complete 08/16/2013 07/01/2015 1R27 S1-18 MOV CV-5611 (Reactor Building Firewater Supply) circuit modification to preclude spurious operation Complete 08/16/2013 12/01/2014 1R26 S1-19 MOV CV-5612 (Reactor Building Firewater Supply) circuit modification to preclude spurious operation Complete 08/16/2013 07/01/2015 1R27 S1-20 thru S1-23 AOVs CV-7401, CV-7402, CV-7403, and CV-7404 (Reactor Building Purge Isolations) circuit modifications to preclude spurious
 
operations Complete 08/16/2013 03/01/2015 1R26 / 1R27 S1-24 thru S1-26 Circuit re-routes for Service Water Pump P-4A, Emergency Feedwater Pump P-7B, and Primary Makeup Pump P-36A to reduce risk of circuit failure in specific areas Complete 12/20/2013 07/01/2015 1R27 S1-27 thru S1-30 Service Water sluice gate valves SG-1, SG-2, SG-3, and SG-4 modifications to prevent spurious closure Complete 03/15/2013 12/15/2013 1R25  , Attachment 1 1CAN121204
 
Page 3 of 3 Modification Description (based on ANO-1 LAR Table S-1 numbering)
Conceptual Design Complete Engineering Study Complete Final Design Package Complete Installation Complete S1-31 Fire Barrier Upgrades Complete 09/23/2013 07/01/2015 1R26 S1-32 NFPA 50A Non-Compliance Corrections (related to Hydrogen Gas Bottle Storage Room) Complete 02/14/2013 04/01/2014 12/15/2014 S1-33 NFPA 10 Non-Compliance Corrections (related to fire extinguishers) Complete 01/25/2013 04/01/2014 12/15/2014 S1-34 NFPA 30 Oil Storage Tank Ventilation Air Duct Relocation (related to Dirty and Clean Lube Oil Tank Room) Complete 09/27/2013 04/01/2014 12/15/2014 S1-35 MOVs CV-1050, CV-1410, and CV-1404 (Decay Heat Removal Suction Isolations) modification for NRC Information Notice (IN) 92-18 issues (associated with non-power operations) Complete 08/30/2013 07/01/2015 1R26 / 1R27 Refueling outage 1R25 (red train outage) is scheduled for the fall of 2014 Refueling outage 1R26 (green train outage) is scheduled for the spring of 2016
 
Refueling outage 1R27 (red train outage) is scheduled for the fall of 2017
 
Attachment 2 ANO-1 NFPA 805 Modifications Timeline
  , Attachment 2 1CAN121204
 
Page 1 of 6 ANO-1 NFPA 805 Modifications Timeline The following table provides a schedule view on a calendar quarter basis. Calendar quarters containing no information are used as contingency windows supporting unforeseen circumstances that could delay completion of modification preparations as currently scheduled.
ANO-1 Activities 2012 3 rd Quarter License Amendment Request (LAR) Conceptual Design for proposed modifications complete 4 th Quarter ANO-2 NFPA 805 LAR Submittal 2013 1 st Quarter ANO-1 NFPA 805 LAR Development  Main Control Room Analysis  Detailed Fire Modeling  Focused Scope Peer Review  Fire Risk Quantification  Revised Fire (Probabilistic Risk Assessment) PRA  Fire Risk Evaluations Engineering Study (ES) Completed  S1 Auxiliary Feedwater source  S1-27 thru S1 Service Water Sluice Gate Valves SG-1, SG-2, SG-3, and SG-4  S1 NFPA 50A Code Compliance Hydrogen Gas Bottle Storage  S1 NFPA 10 Compliance (Fire Extinguishers) 1R24 Refueling Outage (Green Train) (Completed Design Change packages required 9 months prior to outage)
  , Attachment 2 1CAN121204
 
Page 2 of 6 ANO-1 Activities 2013 2 nd Quarter  1R24 Refueling Outage (Green Train) (continued)
ANO-1 NFPA 805 LAR Development  Complete all analyses ANO-2 LAR  NRC Audit (tentative)  NRC Request for Additional Information (RAIs) (tentative) 3 rd Quarter ANO-1 NFPA 805 LAR Development  Complete all reviews ANO-2 LAR  NRC Audit (tentative)  NRC Request for Additional Information (RAIs) (tentative)  ES Completed  S1 Control Room Panel C20 Incipient Fire Detection  S1 CV-1052 circuit modification  S1 CV-1053 circuit modification  S1 CV-1221 circuit modification  S1 CV-1405 circuit modification  S1 CV-1406 circuit modification  S1 CV-3643 circuit modification  S1 CV-4400 circuit modification  S1 CV-4446 circuit modification  S1 CV-5611 circuit modification  S1 CV-5612 circuit modification  S1-20 thru S1 CV-7401, CV-7402, CV-7403, and CV-7404 circuit modification  S1 Fire Barrier Upgrades  S1 NFPA 30 Code Compliance (Dirty and Clean Lube Oil Tank Room ventilation duct relocation)  S1 CV-1050, CV-1410, CV-1404 IN 92-18 modifications
  , Attachment 2 1CAN121204
 
Page 3 of 6 ANO-1 Activities 2013 4 th Quarter ANO-1 NFPA 805 LAR Development  Finalize LAR  Management Approval ANO-2 LAR  NRC Request for Additional Information (RAIs) (tentative)  ES Completed  S1-2 thru S1 DC Control Power  S1-7 and S1 A-309 and A-409 4160V AC breaker circuit modification  S1-24 thru S1 Circuit re-route for P-4A, P-7B, P-36A Design Complete  S1 Control Room Panel C20 Incipient Fire Detection  S1 CV-1221 circuit modification  S1 CV-1405 circuit modification  S1 CV-1406 circuit modification  S1 CV-3643 circuit modification  S1-27 thru S1 Service Water Sluice Gate Valves SG-1, SG-2, SG-3, and SG-4 2014 1 st Quarter ANO-1 NFPA 805 LAR Development  Submit LAR LAR Audit (tentative) LAR RAIs (tentative) 2 nd Quarter Design Complete  S1 NFPA 50A Code Compliance Hydrogen Gas Bottle Storage  S1 NFPA 10 Non-Compliance Corrections (Fire Extinguishers)  S1 NFPA 30 Code Compliance (Dirty and Clean Lube Oil Tank Room ventilation duct relocation) 2R23 Refueling Outage (Red Train)
    , Attachment 2 1CAN121204
 
Page 4 of 6 ANO-1 Activities 2014 3 rd Quarter 2R23 Refueling Outage (Red Train) (continued)
Design Complete  S1-2 thru S1 DC Control Power  S1-7 & S1 A-309 and A-409 4160V AC breaker circuit modification 4 th Quarter 1R25 Refueling Outage (Red Train) (Modifications Installed)  S1 Control Room Panel C20 Incipient Fire Detection  S1 CV-1221 circuit  S1 CV-1405 circuit  S1 CV-1406 circuit  S1 CV-3643 circuit  S1-27 thru S1 Service Water Sluice Gate Valves SG-1, SG-2, SG-3, and SG-4 Non-Outage Modifications Completed  S1 NFPA 50A Code Compliance Hydrogen Gas Bottle Storage  S1 NFPA 10 Non-Compliance Corrections (Fire Extinguishers)  S1 NFPA 30 Code Compliance (Dirty and Clean Lube Oil Tank Room ventilation duct relocation)
Design Complete  S1 CV-5611 circuit modification 2015 1 st Quarter Design Complete  S1 CV-1052 circuit modification  S1 CV-4400 circuit modification  S1-20 thru S1 CV-7401, CV-7402, CV-7403, and CV-7404 circuit modification 2 nd Quarter    , Attachment 2 1CAN121204
 
Page 5 of 6 ANO-1 Activities 2015 3 rd Quarter Design Complete  S1-1 Auxiliary Feed Water source  S1 CV-1053 circuit modification  S1 CV-4446 circuit modification  S1 CV-5612 circuit modification  S1-24 thru S1 Circuit re-route for P-4A, P-7B, P-36  S1 Fire Barrier Upgrades  S1 CV-1050, CV-1410, and CV-1404 IN 92-18 modifications 2R24 Refueling Outage (Green Train) 4 th Quarter 2R24 Refueling Outage (Green Train) (continued) 2016 1 st Quarter 2 nd Quarter 1R26 Refueling Outage (Green Train) (Modification Installation)  S1 Control Room Panel C20 Incipient Fire Detection  S1-1 Auxiliary Feed Water source  S1-2 thru S1 DC Control Power  S1-7 & S1 A-309 and A-409 4160V AC breaker circuits  S1 CV-1052 circuit  S1 CV-4400 circuit  S1 CV-5611 circuit  S1-20 thru S1 CV-7401, CV-7402, CV-7403, and CV-7404 circuits  S1 Fire Barrier Upgrades  S1 CV-1050, CV-1410, CV-1404 IN 92-18 3 rd Quarter 4 th Quarter 
  , Attachment 2 1CAN121204
 
Page 6 of 6 2017 1 st Quarter 2R26 Refueling Outage (Red Train) 2 nd Quarter 2R26 Refueling Outage (Red Train) (continued) 3 rd Quarter 4 th Quarter 1R27 Refueling Outage (Red Train) (Modification Installation)  S1-1 Auxiliary Feed Water source  S1-2 thru S1 DC Control Power  S1-7 & S1 A-309 and A-409 4160V AC breaker circuits  S1 CV-1053 circuit  S1 CV-4446 circuit  S1 CV-5612 circuit  S1-20 thru S1 CV-7401, CV-7402, CV-7403, and CV-7404 circuit  S1-24 thru S1 Circuit re-route for P-4A, P-7B, P-36A  S1 CV-1050, CV-1410, CV-1404 IN 92-18
 
Enclosure 2 to 1CAN121204 List of Regulatory Commitments to 1CAN121204
 
Page 1 of 1 LIST OF REGULATORY COMMITMENTS The following table identifies those actions committed to by Entergy Operations, Inc. (Entergy) in this document. Any other statements in this submittal are provided for information purposes and are not considered to be regulatory commitments.
TYPE (Check one) COMMITMENT ONE-TIME ACTION CONTINUING COMPLIANCE SCHEDULED COMPLETION DATE Entergy will submit the License Amendment Request implementing 10 CFR 50.48(c) for Arkansas Nuclear
 
One, Unit 1  January 31, 2014}}

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