PLA-7550, Fifth-Month Status Report in Response to June 6, 2013 Commission Order Modifying Licenses with Regard to Reliable Hardened Containment Vents Capable of Operation Under Severe Accident Condition (Order No. EA-13-109)..: Difference between revisions

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#REDIRECT [[PLA-7550, Fifth-Month Status Report in Response to June 6, 2013 Commission Order Modifying Licenses with Regard to Reliable Hardened Containment Vents Capable of Operation Under Severe Accident Condition (Order No. EA-13-109)]]
| number = ML16355A294
| issue date = 12/19/2016
| title = Fifth-Month Status Report in Response to June 6, 2013 Commission Order Modifying Licenses with Regard to Reliable Hardened Containment Vents Capable of Operation Under Severe Accident Condition (Order No. EA-13-109)..
| author name = Rausch T
| author affiliation = Susquehanna Nuclear, LLC, Talen Energy
| addressee name =
| addressee affiliation = NRC/Document Control Desk, NRC/NRR
| docket = 05000387, 05000388
| license number =
| contact person =
| case reference number = EA-13-109, PLA-7550
| document type = Letter type:PLA, Status Report
| page count = 13
| project =
| stage = Other
}}
 
=Text=
{{#Wiki_filter:Timothy S. Rausch          Susquehanna Nuclear, LLC President and Chief Nuclear Officer                769 Salem Boulevard Berwick, PA 18603      TALEN ~
Tel. 570.542.3445 Fax 570.542.1504 Timothy.Rausch@talenenergy. com ENERGY DEC 1 9 2016 U.S. Nuclear Regulatory Commission                                                    10 CFR2.202 ATTN: Document Control Desk Washington, DC 20555-0001 SUSQUEHANNA STEAM ELECTRIC STATION FIFTH SIX-MONTH STATUS REPORT IN RESPONSE TO JUNE 6, 2013 COMMISSION ORDER MODIFYING LICENSES WITH REGARD TO RELIABLE HARDENED CONTAINMENT VENTS CAPABLE OF OPERATION UNDER SEVERE ACCIDENT CONDITIONS                                                      Docket Nos. 50-387 (ORDER NUMBER EA-13-109)                                                                    and 50-388 PLA-7550
 
==References:==
: 1. NRC Order Number EA-13-109, Order Modifying Licenses with Regard to Reliable Hardened Containment Vents Capable of Operation Under Severe Accident Conditions, dated June 6, 2013.
: 2. NRC Interim Staff Guidance JLD-ISG-2013-02, "Compliance with Order EA-13-109, Order Modifying Licenses with Regard to Reliable Hardened Containment Vents Capable of Operation Under Severe Accident Conditions," Revision 0, dated November 2013 (Accession No.
ML13304B836 and JLD-ISG-2015-01, Revision 0, dated April 2015 (Accession No.
ML15104All8)).
: 3. NRC Endorsement ofindustly "Hardened Containment Venting System (HCVS) Phase 1 Overall Integrated Plan Template (EA-13-109) Rev 0" (Accession No. ML14128A219).
: 4. NEI 13-02, "Industry Guidance for Compliance with NRC Order EA-13-109, "To Modify Licenses with Regard to Reliable Hardened Containment Vents Capable of Operation under Severe Accident Conditions," Revisions 0 and 1.
: 5. PPL Letter (PLA-7180), "Overall Integrated Plan in Response to June 6, 2013 Commission Order Modifying Licenses with Regard to Reliable Hardened Containment Vents Capable of Operation Under Severe Accident Conditions (Order Number EA-13-109), "dated June 26, 2014.
: 6. PPL Letter (PLA-7269) T. S. Rausch (PPL Susquehanna, LLC) to US. NRC, "First Six-Month Status Report In Response to June 6, 2013 Commission Order Modifying Licenses With Regard To Reliable Hardened Containment Vents Capable Of Operation Under Severe Accident Conditions (Order Number EA-13-109), "dated December 23, 2014.
: 7. Susquehanna Letter (PLA-7345) T. S. Rausch (Susquehanna Nuclear, LLC) to US. NRC, "Second Six-Month Status Report In Response to June 6, 2013 Commission Order Modifying Licenses With Regard To Reliable Hardened Containment Vents Capable Of Operation Under Severe Accident Conditions (Order Number EA-13-109), "dated June 23,2015.
 
Document Control Desk PLA-7550
: 8. NRC Endorsement of indust1y "Hardened Containment Venting System (HCVS) Phase 1 and 2 Overall Integrated Plan Template," Revision 1, dated September 22, 2015, and Frequently Asked Questions (FAQs) 10, 11, 12, and 13 (Accession No. ML15273A141).
: 9. Susquehanna Letter (PLA-7421), "Combined Phase 1 and Phase 2 Overall Integrated Plan in Response to June 6, 2013 Commission Order Modifjling Licenses with Regard to Reliable Hardened Containment Vents Capable of Operation Under Severe Accident Conditions (Order Number EA-13-109), "dated December 23, 2015.
: 10. Susquehanna Letter (PLA-7488) T. S. Rausch (Susquehanna Nuclear, LLC) to US. NRC, "Fourth Six-Month Status Report In Response to June 6, 2013 Commission Order Modifjling Licenses With Regard To Reliable Hardened Containment Vents Capable Of Operation Under Severe Accident Conditions (Order Number EA-13-109), "dated June 29, 2016.
On June 6, 2013, the Nuclear Regulatory Commission ("NRC" or "Commission") issued an order (Reference 1) to PPL Susquehanna, LLC (PPL). Reference 1 was immediately effective and directs Susquehanna to install a ptimary containment venting capability in accordance with the requirements outlined in Attachment 2 of Reference 1.
The Order (EA-13-109) requires that licensees ofBWR facilities with Mark I and Mark II containment designs ensure that these facilities have a reliable hardened containment vent system (HCVS). The HCVS must be able to remove decay heat from the containment and maintain control of containment pressure within acceptable limits following events that result in the loss of active containment heat removal capability.
The HCVS must maintain the capability to operate under severe accident (SA) conditions resulting from an Extended Loss of AC Power (ELAP).
The Order requirements are applied in a phased approach where:
    *  "Phase 1 involves upgrading the venting capabilities from the containment wetwell to provide reliable, severe accident capable hardened containment vents to assist in preventing core damage and, if necessary, to provide containment venting capability during severe accident conditions." (Completed "no later than startup from the second refueling outage that begins after June 30, 2014, or June 30, 2018, whichever comes first.")
        "Phase 2 involves providing additional protections for severe accident conditions through installation of a reliable, severe accident capable drywell vent system or the development of a reliable containment venting strategy that makes it unlikely that a licensee would need to vent from the containment drywell during severe accident conditions." (Completed "no later than startup from the first refueling outage that begins after June 30, 2017, or June 30, 2019, whichever comes first.")
The NRC provided an acceptable approach for complying with Order EA-13-109 through Interim Staff Guidance (JLD-ISG-2013-02 issued in November 2013 and JLD-ISG-2015-01 issued in April2015). The ISGs endorse the compliance approach presented in
 
Document Control Desk PLA-7550 NEI 13-02 Revisions 0 and 1, Compliance with Order EA-13-109, Severe Accident Reliable Hardened Contaimnent Vents, with clarifications. Except in those cases in which a licensee proposes an acceptable altemative method for complying with Order EA-13-109, the NRC staff will use the methods described in the ISGs to evaluate licensee compliance as presented in submittals required in Order EA-13-109.
The Order also requires submittal of an overall integrated plan which will provide a description of how the requirements of the Order will be achieved (Reference 8).
Susquehanna submitted a Combined Phase 1 and Phase 2 Overall Integrated Plan (OIP) for complying with Order EA-13-109 using the methods described in NEI 13-02 and endorsed by NRC JLD-ISG-2013-02 and JLD-ISG-2015-01 (Reference 9).
Reference 1 requires submission of status reports at six-month intervals following submittal of the Combined Phase 1 and Phase 2 Overall Integrated Plan. References 2 and 4 provide direction regarding the content of the status reports. The purpose of this letter is to provide the fifth six-month status report pursuant to Section IV, Condition D, of Reference 1, that delineates progress made in implementing the requirements of Reference 1. The enclosed Status Report provides an update of milestone accomplishments since submittal of the Combined Phase 1 and Phase 2 Overall Integrated Plan and the fomih six-month status report, including any changes to the compliance method, schedule, or need for relief and the basis, if any.
This letter contains no new regulatory commitments.
Should you have any questions regarding this submittal, please contact Mr. Jason Jennings, Manager- Nuclear Regulatory Affairs at (570) 542-3155.
I declare under penalty of perjury that the foregoing is true and correct.
Executed on:
                            .    \
 
==Enclosure:==
Susquehanna Nuclear, LLC's Fifth Six-Month Status Report in Response to the June 6, 2013 Commission Order Modifying Licenses with Regard to Reliable Hardened Containment Vents Capable of Operation Under Severe Accident Conditions (Order Number EA-13-109)
 
Document Control Desk PLA-7550 cc: Director, Office of Nuclear Reactor Regulation NRC Region I Mr. Rajender Auluck, NRR/JLD/PSB, NRC Mr. Brian Lee, NRR/JLD/JOMB, NRC Mr. J. E. Greives, NRC Sr. Resident Inspector Ms. T. E. Hood, NRC Project Manager Mr. W. D. Reckley, NRR/JLD/PSB, NRC Mr. M. Shields, PA DEP/BRP
 
Enclosure to PLA-7550 Fifth Six-Month Status Report In Response to the June 6, 2013 Commission Order Modifying Licenses with Regard to Reliable Hardened Containment Vents Capable of Operation Under Severe Accident Conditions (Order Number EA-13-109)
 
Enclosure to PLA-7550 Page 1 of8 Susquehanna Nuclear, LLC's Fifth Six Month Status Report for the Implementation of Order EA-13-109, "Order Modifying Licenses with Regard to Reliable Hardened Containment Vents Capable of Operation Under Severe Accident Conditions" 1 Introduction Susquehanna Nuclear, LLC developed an Overall Integrated Plan (Reference 1, all references mentioned in this enclosure are in Section 8 of this enclosure), documenting the installation of a Hardened Containment Vent System (HCVS) that provides a reliable hardened venting capability for pre-core damage and under severe accident conditions, including those involving a breach of the reactor vessel by molten core debris, in response to Reference 2.
This six month status report provides updates of milestone accomplishments based on the Combined Phase 1 and 2 Overall Integrated Plan dated December 23, 2015 (Reference 8) since submittal ofthe fourth six month status report (Reference 11).
Susquehanna Nuclear, LLC developed an updated and Combined Phase 1 and 2 Overall Integrated Plan (Reference 8 in Section 8), documenting:
: 1. The installation of a Hardened Containment Vent System (HCVS) that provides a reliable hardened venting capability for pre-core damage and under severe accident conditions, including those involving a breach of the reactor vessel by molten core debris, in response to Reference 2.
: 2. An alternative venting strategy that makes it unlikely that a drywell vent is needed to protect the containment from overpressure related failure under severe accident conditions, including those that involve a breach of the reactor vessel by molten core debris, in response to Reference 2.
This Enclosure provides an update of milestone accomplishments since submittal of the fourth six month status report (Reference 11 ), including any changes to the compliance method, schedule, or need for relief/relaxation and the basis, if any. The information in this update is current as ofNovember 18, 2016.
2  Milestone Accomplishments The following milestone(s) have been completed since the submittal of the fourth six month status report (Reference 11), and are current as ofNovember 18,2016.
* Unit 2 Phase 1 installation has started.
* Phase 2 Open Item # 2 was completed.
3  Milestone Schedule Status The following provides an update to the Milestone Schedule presented in Part 5 of the Combined Phase 1 and 2 Overall Integrated Plan (Reference 8). It provides the activity status of each item, and whether the expected completion date has changed. The dates are planning dates subject to change as design and implementation details are developed.
The revised milestone target completion dates do not impact the order implementation date.
 
Enclosure to PLA-7550 Page 2 of8 Target                          Comments Activity Milestone                  Completion                  {h1clude date changes Status Date                        in this column}
Phase 1 and 2 HCVS Milestone Table Submit Overall Integrated Plan                Jun 2014      Complete Submit 6 Month Updates:
Update 1                                  Dec. 2014      Complete Update 2                                  Jun. 2015      Complete Simultaneous with Update 3                                  Dec. 2015      Complete Phase 2 OIP Update 4                                  Jun.2016      Complete Dec. 2016      Complete Update 5                                                  with this submittal Update 6                                  Jun.2017      Not Started Update 7                                  Dec. 2017    Not Started Update 8                                  Jun. 2018    Not Started Update 9                                  Dec. 2018    Not Started Phase 1 Specific Milestones Phase 1 Modifications:
Hold preliminary/conceptual design        June 2014    Complete meeting Unit 2 Design Engineering Complete        Apr. 2016    Complete Non-outage Unit 2 Implementation Outage              Mar. 2017    Not Started    installation scope has started.
Unit 2 Walk Through Apr. 2017    Not Started Demonstration/Functional Test Unit 1 Design Engineering Complete        Mar. 2017      Started Unit 1 Implementation Outage              Mar. 2018    Not Started Unit 1 Walk Through Apr. 2018    Not Started Demonstration/Functional Test Phase 1 Procedure Changes Active U2 Operations Procedure Changes Dec. 2016      Started Developed U2 Maintenance Procedure Changes Dec. 2016      Started Developed U2 Procedure Changes Active                Apr. 2017      Started U1 Operations Procedure Changes Dec. 2017    Not Started Developed U1 Maintenance Procedure Developed        Dec. 2017    Not Started Changed from Mar.
U1 Procedure Changes Active              Apr. 2018    Not Started      2018 per outage schedule
 
Enclosure to PLA-7550 Page 3 of8 Target                          Comments Activity Milestone                  Completion                  {Include date changes Status Date                        in this column}
Phase 1 and 2 HCVS Milestone Table Phase 1 Training:
U2 Training Complete                      Apr. 2017    Not Started Ul Training Complete                      Apr. 2018    Not Started Phase 1 Completion Unit 2 HCVS Implementation                Apr. 2017        Stmied Unit 1 HCVS Implementation                Apr. 2018        Started Full Site HCVS hnplementation            Apr. 2018      Started 60 days after Phase 1 Submit Phase 1 Completion Report          Jun.2018      Not Started compliance Phase 2 Specific Milestones Phase 2 Modifications:
Hold preliminary/conceptual design Oct. 2015      Complete meeting Unit 1 Design Engineering On-Dec. 2016        Started site/Complete Unit 1 hnplementation Outage            Mar. 2018    Not Started Unit 1 Walk Through Apr. 2018      Not Started Demonstration/Functional Test Unit 2 Design Engineering On-Dec. 2017        Started site/Complete Unit 2 hnplementation Outage              Mar. 2019    Not Started Unit 2 Walk Through                      Apr. 2019    Not Started Demonstration/Functional Test Phase 2 Procedure Changes Active Unit 1 Operations Procedure Changes Apr. 2018      Not Started Developed Unit 1 Maintenance Procedure Changes Apr. 2018      Not Started Developed Unit 1 Procedure Changes Active          Apr. 2018      Not Started Unit 2 Operations Procedure Changes Apr. 2019      Not Started Developed Unit 2 Maintenance Procedure Changes Apr. 2019      Not Started Developed Unit 2 Procedure Changes Active          Apr. 2019    Not Started Phase 2 Training:
U1 Training Complete                      Apr. 2018    Not Started U2 Training Complete                      Apr. 2019    Not Started Training Complete                        Apr. 2019    Not Started Phase 2 Completion Unit 1 HCVS hnplementation                Apr. 2018    Started Unit 2 HCVS hnplementation                Apr. 2019    Started
 
Enclosure to PLA-7550 Page 4 of8 Target                          Comments Activity Milestone                      Completion                  {Include date changes Status Date                        in this column}
Phase 1 and 2 HCVS Milestone Table Full Site HCVS Implementation                  Apr. 2019    Started 60 days after full site Submit Completion Report                        Jun. 2019    Not Started compliance 4  Changes to Compliance Method There are no changes to the compliance method as documented in the Combined Phase 1 and 2 Overall Integrated Plan (Reference 8).
5  Need for Relief/Relaxation and Basis for the Relief/Relaxation Susquehanna Nuclear, LLC expects to comply with the order implementation date and no relief/relaxation is required at this time.
6  Open Items from Combined Phase 1 and 2 Overall Integrated Plan and Interim Staff Evaluations The following tables provide a summary of the open items documented in the Combined Phase 1 and 2 Overall Integrated Plan or the Interim Staff Evaluation (IS E) and the status of each item.
Combined Phase 1 and 2 OIP Open Item                                Status Phase 1 Open Items 1  Confirm suppression pool heat capacity.                                      Complete 2  Deployment under severe accident conditions will be confirmed for the        Started deployment of the FLEX generators credited to re-energize battery chargers.
3  Deployment under severe accident conditions will be confirmed for            Started deployment of the supplemental gas bottles.
4  The gas supply will be sized to support HCVS operation for a minimum        Complete of 24 hours (a minimum of 8 valve cycles of valve operation is assumed, consistent with recommendations in HCVS-WP-02). This design assumption will require future validation in the design phase of this project.
5    An assessment of temperature and radiological conditions will be            Complete performed to ensure that operating personnel can safely access and operate controls at the remote operating station, based on time constraints listed in Attachment 2 of the Overall Integrated Plan.
 
Enclosure to PLA-7550 Page 5 of8 Combined Phase 1 and 2 OIP Open Item                            Status 6  Evaluate viable options to address Hydrogen detonation concerns in        Complete HCVS piping to meet the requirements ofEA-13-109, Section 1.2.11 and incorporate in HCVS design. SSES will determine the method to be deployed once NRC review of HCVS-WP-03 is complete.
7  An evaluation will be performed to confirm the HCVS power supply          Complete can support HCVS operation for a minimum of 24 hours.
Phase 2 Open Items 1 Revise EC-016-1043 to include simultaneous SAWA and FLEX case.            Complete Ensure the SAWA flow instrument will operate in the conditions 2                                                                            Complete expected.
Phase 1 Interim Staff Evaluation Open Item                Comment          Status 1  Make available for NRC staff audit an evaluation that        Section 3.1.2      Complete confirms that all load stripping to support HCVS operation can be accomplished within forty five minutes of event initiation.
2  Make available for NRC staff audit the final sizing          Section 3.2.1      Complete evaluation for HCVS batteries/battery charger including      Section 3.2.2.4 incorporation into FLEX DG loading calculation.              Section 3.2.3.1 Section 3.2.3.2 Section 3 .2.4.1 Section 3.2.4.2 Section 3.2.5.1 Section 3.2.5.2 Section 3.2.6 3  Make available for NRC staff audit documentation of the      Section 3 .2.1      Complete HCVS nitrogen pneumatic system design including sizing      Section 3.2.2.4 and location.                                                Section 3.2.3.1 Section 3.2.3.2 Section 3.2.4.1 Section 3.2.4.2 Section 3.2.5.1 Section 3.2.5.2 Section 3.2.6
 
Enclosure to PLA-7550 Page 6 of8 4  Make available for NRC staff audit an evaluation of            Section 3.2.1      Complete temperature and radiological conditions to ensure that        Section 3.2.2.3 operating personnel can safely access and operate controls    Section 3.2.2.4 and support equipment.                                        Section 3.2.2.5 Section 3.2.2.10 Section 3.2.4.1 Section 3.2.4.2 Section 3.2.5 .2 Section 3.2.6 5  Make available for NRC staff audit analyses demonstrating    Section 3.2.2.1    Complete that HCVS has the capacity to vent the steam/energy          Section 3.2.2.2 equivalent of one percent of licensed/rated them1al power (unless a lower value is justified), and that the suppression pool and the HCVS together are able to absorb and reject decay heat, such that following a reactor shutdown from full power containn1ent pressure is restored and then maintained below the primary containment design pressure and the primary containment pressure limit.
6  Make available for NRC staff audit the seismic and tornado    Section 3.2.2.3    Started missile final design criteria for the HCVS stack.
7  Make available for NRC staff audit the descriptions of local  Section 3.2.2.3    Started conditions (temperature, radiation and humidity) anticipated  Section 3.2.2.5 during ELAP and severe accident for the components            Section 3.2.2.9 (valves, instrumentation, sensors, transmitters, indicators,  Section 3 .2.2.1 0 electronic, control devices, and etc.) required for HCVS venting including confirmation that the components are capable of performing their functions during ELAP and severe accident conditions.
8 Make available for NRC staff audit documentation that          Section 3.2.2.5    Started demonstrates adequate communication between the remote        Section 3.2.2.10 HCVS operation locations and HCVS decision makers during ELAP and severe accident conditions.
9  Provide a description of the final design of the HCVS to      Section 3.2.2.6    Complete address hydrogen detonation and deflagration.
10  Provide a description of the strategies for hydrogen control  Section 3.2.2.6    Started that minimizes the potential for hydrogen gas migration and ingress into the reactor building or other buildings.
11  Provide a justification for deviating from the                Section 3.2.2.9    Complete instrumentation seismic qualification guidance specified in NEI 13-02, endorsed, in part, by JLD-ISG-2013-02 as an acceptable means for implementing applicable requirements of Order EA-13-109.
12  Make available for NRC staff audit descriptions of all        Section 3.2.2.10  Started instrumentation and controls (existing and planned) necessary to implement this order including qualification methods.
 
Enclosure to PLA-7550 Page 7 of8 Phase 2 Interim Staff Evaluation Open Item                  Comment            Status No final ISE Open Items nave been provided by the NRC at this time.
7  Interim Staff Evaluation Impacts There are no potential impacts to the Interim StaffEvaluation(s) identified at this time.
8 References The following references support the updates to the Combined Phase 1 and 2 Overall Integrated Plan described in this Enclosure.
: 1. PLA-7180, Susquehanna, LLC's Overall Integrated Plan in Response to June 6, 2013 Commission Order Modifying Licenses with Regard to Reliable Hardened Containment Vents Capable of Operation Under Severe Accident Conditions (Order Number EA        109)," dated June 26, 2014.
: 2. NRC Order Number EA-13-109, "Order Modifying Licenses with Regard to Reliable Hardened Containment Vents Capable of Operation Under Severe Accident Conditions,"
dated June 6, 2013.
: 3. NEI 13-02, "Industry Guidance for Compliance with NRC Order EA-13-109, 'To Modify Licenses with Regard to Reliable Hardened Containment Vents Capable of Operation Under Severe Accident Conditions," Revision 1, dated April2015.
: 4. NRC Interim Staff Guidance JLD-ISG-2013-02, "Compliance with Order EA-13-109, Order Modifying Licenses with Regard to Reliable Hardened Containment Vents Capable of Operation Under Severe Accident Conditions," Revision 0, dated November 2013 (Accession No. ML13304B836).
: 5. NRC Endorsement of industry "Hardened Containment Venting System (HCVS) Phase 1 Overall Integrated Plan Template (EA-13-109) Rev 0" (Accession No. ML14128A219).
: 6. PPL Letter (PLA-7269) T. S. Rausch (PPL Susquehanna, LLC) to U.S. NRC, "First Six-Month Status Report In Response to June 6, 2013 Commission Order Modifying Licenses With Regard To Reliable Hardened Containment Vents Capable Of Operation Under Severe Accident Conditions (Order Number EA-13-109),"
dated December 23, 2014.
: 7. Susquehanna Letter (PLA-7345) T. S. Rausch (Susquehanna Nuclear, LLC) to U.S.
NRC, "Second Six-Month Status Report In Response to June 6, 2013 Commission Order Modifying Licenses With Regard To Reliable Hardened Containment Vents Capable Of Operation Under Severe Accident Conditions (Order Number EA-13-109),"
dated June 23, 2015.
 
Enclosure to PLA-7550 Page 8 of8
: 8. Susquehanna Letter (PLA-7421), Susquehanna, LLC's Combined Phase 1 and 2 Overall Integrated Plan in Response to June 6, 2013 Commission Order Modifying Licenses with Regard to Reliable Hardened Containment Vents Capable of Operation Under Severe Accident Conditions (Order Number EA-13-109)," dated December 23,2015. (Also the Third Six-Month Update.)
: 9. NRC Interim Staff Guidance JLD-ISG-2015-01, "Compliance with Phase 2 of Order EA-13-109, Order Modifying Licenses with Regard to Reliable Hardened Containment Vents Capable of Operation Under Severe Accident Conditions," Revision 0, dated April2015 (Accession No. ML15104All8).
: 10. NRC Endorsement of industry "Hardened Containment Venting System (HCVS) Phase 1 and 2 Overall Integrated Plan Template," Revision 1, dated September 22, 2015, and Frequently Asked Questions (FAQs) 10, 11, 12, and 13 (Accession No. ML15273A141).
: 11. Susquehanna Letter (PLA-7488) T. S. Rausch (Susquehanna Nuclear, LLC) to U.S.
NRC, "Fourth Six-Month Status Report In Response to June 6, 2013 Commission Order Modifying Licenses With Regard To Reliable Hardened Containment Vents Capable Of Operation Under Severe Accident Conditions (Order Number EA-13-109),"
dated June 29, 2016.}}

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