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| | number = ML121150247 | | | number = ML121150247 |
| | issue date = 05/03/2012 | | | issue date = 05/03/2012 |
| | title = Callaway Plant, Unit 1 - Memo to File, Verbal Authorization, Relief Request VR-01 from Requirements of ASME OM Code Mandatory Appendix I, One-time Extension Replacement of Main Steam Isolation Valve Actuator Rupture Disks (TAC ME8319) | | | title = Memo to File, Verbal Authorization, Relief Request VR-01 from Requirements of ASME OM Code Mandatory Appendix I, One-time Extension Replacement of Main Steam Isolation Valve Actuator Rupture Disks |
| | author name = Kalyanam N | | | author name = Kalyanam N |
| | author affiliation = NRC/NRR/DORL/LPLIV | | | author affiliation = NRC/NRR/DORL/LPLIV |
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Line 13: |
| | document type = Memoranda, Code Relief or Alternative | | | document type = Memoranda, Code Relief or Alternative |
| | page count = 3 | | | page count = 3 |
| | project = TAC:ME8319, TAC:ME8319 | | | project = TAC:ME8319 |
| | stage = Other | | | stage = Other |
| }} | | }} |
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| =Text= | | =Text= |
| {{#Wiki_filter: May 3, 2012 MEMORANDUM TO: Docket File FROM: N. Kalyanam, Project Manager /RA/ Plant Licensing Branch IV Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation SUBJECT: CALLAWAY PLANT UNIT 1 - VERBAL AUTHORIZATION VR-01, PROPOSED ALTERNATIVE REGARDING ASME OM CODE REPLACEMENT INTERVAL FOR MAIN STEAM ISOLATION VALVE ACTUATOR RUPTURE DISKS (TAC NO. ME8319) By letter dated March 30, 2012, as supplemented by letter dated April 19, 2012 (Agencywide Documents Access and Management System (ADAMS) Accession Nos. ML12090A501 and ML121150347, respectively), Union Electric Company, (the licensee) submitted alternative request VR-01 for the Callaway Plant, Unit 1, for U.S. Nuclear Regulatory Commission (NRC) review and approval. This request pertains to inservice testing requirements for Main Steam Isolation Valve (MSIV) actuator rupture disks ABPSE0001, ABPSE0002, ABPSE0003, and ABPSE0004 at Callaway Plant, Unit 1. The licensee requested an alternative from the required replacement frequency requirement of the American Society of Mechanical Engineers (ASME) Code for Operation and Maintenance of Nuclear Power Plants (OM Code) Mandatory Appendix I, Paragraph I-1360, "Test Frequency, Class 2 and 3 Nonreclosing Pressure Relief Devices," as required and conditioned by Title 10 of the Code of Federal Regulations Section 50.55a. Specifically, an alternative was requested for the requirement to replace MSIV actuator rupture disks ABPSE0001, ABPSE0002, ABPSE0003, and ABPSE0004 every 5 years. Callaway Plant, Unit 1, had originally scheduled the rupture disks replacement during Refueling Outage 18, which began in October 2011. However, the work was removed from the outage scope based on an initial determination that the work could be done with the plant online subsequent to the outage. The rupture disks were scheduled to be replaced online in the spring of 2012 to meet the ASME OM Code requirement. However, the licensee determined that based on the 8-hour Technical Specification (TS) Limiting Conditions for Operations (LCO) and the time needed to replace the rupture disks online, the TS LCO completion time may be exceeded during this replacement activity. Therefore, the rupture disk replacement activity poses elevated risk to continued plant operations if it is performed online. Therefore, the licensee is proposing an alternative to extend the interval for replacing the rupture disks to the next plant outage providing plant conditions to replace the disks (i.e. Mode 4 or 5), but no later than the end of Refueling Outage 19, which is currently scheduled for June 2013. | | {{#Wiki_filter:May 3, 2012 MEMORANDUM TO: Docket File FROM: N. Kalyanam, Project Manager /RA/ |
| - 2 -Extending the replacement date until Refueling Outage 19 will not affect the functionality of the MSIVs and does not introduce any credible failure mechanism that would prevent the rupture disks from rupturing at a pressure needed for the MSIVs to perform their safety-related purpose.
| | Plant Licensing Branch IV Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation |
| Conclusion As set forth above, the NRC staff concludes that the proposed alternative described in alternative request VR-01 provides reasonable assurance that the MSIV actuator rupture disks ABPSE0001, ABPSE0002, ABPSE0003, and ABPSE0004 are operationally ready. | | |
| | ==SUBJECT:== |
| | CALLAWAY PLANT UNIT 1 - VERBAL AUTHORIZATION VR-01, PROPOSED ALTERNATIVE REGARDING ASME OM CODE REPLACEMENT INTERVAL FOR MAIN STEAM ISOLATION VALVE ACTUATOR RUPTURE DISKS (TAC NO. ME8319) |
| | By letter dated March 30, 2012, as supplemented by letter dated April 19, 2012 (Agencywide Documents Access and Management System (ADAMS) Accession Nos. ML12090A501 and ML121150347, respectively), Union Electric Company, (the licensee) submitted alternative request VR-01 for the Callaway Plant, Unit 1, for U.S. Nuclear Regulatory Commission (NRC) review and approval. |
| | This request pertains to inservice testing requirements for Main Steam Isolation Valve (MSIV) actuator rupture disks ABPSE0001, ABPSE0002, ABPSE0003, and ABPSE0004 at Callaway Plant, Unit 1. The licensee requested an alternative from the required replacement frequency requirement of the American Society of Mechanical Engineers (ASME) Code for Operation and Maintenance of Nuclear Power Plants (OM Code) Mandatory Appendix I, Paragraph I-1360, Test Frequency, Class 2 and 3 Nonreclosing Pressure Relief Devices, as required and conditioned by Title 10 of the Code of Federal Regulations Section 50.55a. |
| | Specifically, an alternative was requested for the requirement to replace MSIV actuator rupture disks ABPSE0001, ABPSE0002, ABPSE0003, and ABPSE0004 every 5 years. Callaway Plant, Unit 1, had originally scheduled the rupture disks replacement during Refueling Outage 18, which began in October 2011. However, the work was removed from the outage scope based on an initial determination that the work could be done with the plant online subsequent to the outage. The rupture disks were scheduled to be replaced online in the spring of 2012 to meet the ASME OM Code requirement. However, the licensee determined that based on the 8-hour Technical Specification (TS) Limiting Conditions for Operations (LCO) and the time needed to replace the rupture disks online, the TS LCO completion time may be exceeded during this replacement activity. Therefore, the rupture disk replacement activity poses elevated risk to continued plant operations if it is performed online. Therefore, the licensee is proposing an alternative to extend the interval for replacing the rupture disks to the next plant outage providing plant conditions to replace the disks (i.e. Mode 4 or 5), but no later than the end of Refueling Outage 19, which is currently scheduled for June 2013. |
| | |
| | Extending the replacement date until Refueling Outage 19 will not affect the functionality of the MSIVs and does not introduce any credible failure mechanism that would prevent the rupture disks from rupturing at a pressure needed for the MSIVs to perform their safety-related purpose. |
| | Conclusion As set forth above, the NRC staff concludes that the proposed alternative described in alternative request VR-01 provides reasonable assurance that the MSIV actuator rupture disks ABPSE0001, ABPSE0002, ABPSE0003, and ABPSE0004 are operationally ready. |
| Accordingly, the NRC staff concludes that the licensee has adequately addressed all of the regulatory requirements set forth in 10 CFR 50.55a(a)(3)(ii), and is in compliance with the ASME OM Code requirements. Therefore, the NRC staff provides verbal authorization for the proposed alternatives described in request alternative VR-01 until the next plant outage providing plant conditions to replace the MSIV actuator rupture disks (i.e., Mode 4 or 5), but no later than the end of the Callaway Plant, Unit 1, Refueling Outage 19, which is currently scheduled for June 2013. | | Accordingly, the NRC staff concludes that the licensee has adequately addressed all of the regulatory requirements set forth in 10 CFR 50.55a(a)(3)(ii), and is in compliance with the ASME OM Code requirements. Therefore, the NRC staff provides verbal authorization for the proposed alternatives described in request alternative VR-01 until the next plant outage providing plant conditions to replace the MSIV actuator rupture disks (i.e., Mode 4 or 5), but no later than the end of the Callaway Plant, Unit 1, Refueling Outage 19, which is currently scheduled for June 2013. |
| All other ASME Code requirements for which relief was not specifically requested and approved in this relief request remain applicable, including third-party review by the Authorized Nuclear Inservice Inspector. | | All other ASME Code requirements for which relief was not specifically requested and approved in this relief request remain applicable, including third-party review by the Authorized Nuclear Inservice Inspector. |
| The participants in the telephone call were: NRC Mike Markley, Branch Chief, NRR/DORL/LPL4) | | The participants in the telephone call were: |
| Tony McMurtray, Branch Chief, NRR/DE/EPTB Bob Wolfgang, NRR/DE/EPTB Zach Hollcraft, R-IV/DRP/RPB-B/ Kaly Kalyanam, NRR/DORL/LPL4 UNION ELECTRIC COMPANY Brian Pae, Main Steam System Engineer Ben Oguejiofor, Inservice Testing Engineer Christine Norman, Mechanical Design Engineer Bryan Sprock, Engineering Fix-It-Now Engineer Tom Elwood, Regulatory Affairs and Licensing Supervisor Docket No. 50-483 | | NRC Mike Markley, Branch Chief, NRR/DORL/LPL4) |
| - 2 -Extending the replacement date until Refueling Outage 19 will not affect the functionality of the MSIVs and does not introduce any credible failure mechanism that would prevent the rupture disks from rupturing at a pressure needed for the MSIVs to perform their safety-related purpose.
| | Tony McMurtray, Branch Chief, NRR/DE/EPTB Bob Wolfgang, NRR/DE/EPTB Zach Hollcraft, R-IV/DRP/RPB-B/ |
| Conclusion As set forth above, the NRC staff concludes that the proposed alternative described in alternative request VR-01 provides reasonable assurance that the MSIV actuator rupture disks ABPSE0001, ABPSE0002, ABPSE0003, and ABPSE0004 are operationally ready.
| | Kaly Kalyanam, NRR/DORL/LPL4 UNION ELECTRIC COMPANY Brian Pae, Main Steam System Engineer Ben Oguejiofor, Inservice Testing Engineer Christine Norman, Mechanical Design Engineer Bryan Sprock, Engineering Fix-It-Now Engineer Tom Elwood, Regulatory Affairs and Licensing Supervisor Docket No. 50-483 |
| Accordingly, the NRC staff concludes that the licensee has adequately addressed all of the regulatory requirements set forth in 10 CFR 50.55a(a)(3)(ii), and is in compliance with the ASME OM Code requirements. Therefore, the NRC staff provides verbal authorization for the proposed alternatives described in request alternative VR-01 until the next plant outage providing plant conditions to replace the MSIV actuator rupture disks (i.e., Mode 4 or 5), but no later than the end of the Callaway Plant, Unit 1, Refueling Outage 19, which is currently scheduled for June 2013.
| | |
| All other ASME Code requirements for which relief was not specifically requested and approved in this relief request remain applicable, including third-party review by the Authorized Nuclear Inservice Inspector.
| | ML121150247 *via email OFFICE NRR/LPL4/PM NRR/LPL4/LA NRR/DE/EPTB/BC NRR/LPL4/BC NRR/LPL4/PM NAME NKalyanam JBurkhardt AMcMurtray* MMarkley NKalyanam DATE 4/25/12 4/25/12 4/23/12 5/3/12 5/3/12}} |
| The participants in the telephone call were: NRC Michael Markley, Branch Chief, NRR/DORL/LPL4) Anthony McMurtray, Branch Chief, NRR/DE/EPTB Bob Wolfgang, NRR/DE/EPTB Zachary Hollcraft, R-IV/DRP/RPB-B/ Kaly Kalyanam, NRR/DORL/LPL4 UNION ELECTRIC COMPANY Brian Pae, Main Steam System Engineer Ben Oguejiofor, Inservice Testing Engineer Christine Norman, Mechanical Design Engineer Bryan Sprock, Engineering Fix-It-Now Engineer Tom Elwood, Regulatory Affairs and Licensing Supervisor Docket No. 50-483 DISTRIBUTION: PUBLIC LPLIV Reading RidsAcrsAcnw_MailCTR Resource RidsNrrDeEptb Resource RidsNrrDorlLpl4 Resource RidsNrrLAJBurkhardt Resource RidsNrrPMCallaway Resource RidsRgn4MailCenter Resource GMiller, RIV/DRP RWolfgang, NRR/DE/EPTB ADAMS Accession No. ML121150247 *via email OFFICE NRR/LPL4/PM NRR/LPL4/LA NRR/DE/EPTB/BC NRR/LPL4/BC NRR/LPL4/PM NAME NKalyanam JBurkhardt AMcMurtray* MMarkley NKalyanam DATE 4/25/12 4/25/12 4/23/12 5/3/12 5/3/12 OFFICIAL RECORD COPY
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MONTHYEARULNRC-05844, Facility Operating License NPF-30 10 CFR50.55a Request: Proposed Alternative Regarding ASME OM Code Replacement Interval for Main Steam Isolation Value Actuator Rupture Disks2012-03-30030 March 2012
Facility Operating License NPF-30 10 CFR50.55a Request: Proposed Alternative Regarding ASME OM Code Replacement Interval for Main Steam Isolation Value Actuator Rupture Disks
Project stage: Request
ML1210105772012-04-0505 April 2012
Request for Additional Information Re E-mail, Relief Request VR-01 from Requirements of ASME OM Code Mandatory Appendix I, One-time Extension Replacement of Main Steam Isolation Valve Actuator Rupture Disks
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ML1210105692012-04-0909 April 2012
Attachment 5
Project stage: Other
ML1210105602012-04-0909 April 2012
Attachment 4
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ML1210105572012-04-0909 April 2012
Attachment 3
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ML1210105522012-04-0909 April 2012
Attachment 2
Project stage: Other
ML1210105382012-04-0909 April 2012
Attachment 1
Project stage: Other
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Email Licensee Responses to Request for Additional Information Regarding Relief Request, Main Steam Isolation Valve Actuator Rupture Disks Replacement Interval
Project stage: Response to RAI
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Request for Additional Information Email to the Licensee, Relief Request Main Steam Isolation Valve Actuator Rupture Disks Replacement Interval
Project stage: RAI
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Memo to File, Verbal Authorization, Relief Request VR-01 from Requirements of ASME OM Code Mandatory Appendix I, One-time Extension Replacement of Main Steam Isolation Valve Actuator Rupture Disks
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Request for Additional Information, Verbal Authorization of Relief Request VR-01 from Requirements of ASME OM Code Mandatory Appendix I, One-time Extension Replacement of MSIV Actuator Rupture Disks
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ULNRC-05905, Response to NRC Request for Additional Information Regarding 10 CFR 50.55a Request: Proposed Alternative to ASME OM Code Replacement Interval for Main Steam Isolation Valve Actuator Rupture Disks2012-09-10010 September 2012
Response to NRC Request for Additional Information Regarding 10 CFR 50.55a Request: Proposed Alternative to ASME OM Code Replacement Interval for Main Steam Isolation Valve Actuator Rupture Disks
Project stage: Response to RAI
ML12258A0452012-09-18018 September 2012
Relief Request VR-01 from Requirements of ASME OM Code, Mandatory Appendix I, One-time Extension for 5-Year Replacement Interval, from 4/11/12 to 6/2013, Main Steam Isolation Valve Actuator Rupture Disks
Project stage: Other
2012-04-09
[Table View] |
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Category:Memoranda
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[Table view]
Category:Code Relief or Alternative
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Correction to Authorization of Relief Request ISI-39 for the Second 10-Year Inservice Inspection Interval
ML0729803972007-10-30030 October 2007
Relief Request ISI-38, Reactor Pressure Vessel Inlet Safe-End to-Elbow Welds Proposed Alternative Examination for Second 10-Year Inservice Inspection Interval
ML0724000922007-09-17017 September 2007
Issuance of Relief Requests (Rrs) ISI-36, ISI-37, and ISI-38 for Second Year Inservice Inspection (ISI) Interval
ML0725504882007-08-30030 August 2007
10 CFR 50.55a Request: Proposed Alternative to ASME Section Xi Requirements for Replacement of Class 3 Buried Piping
ML0715203292007-07-10010 July 2007
Request for Alternatives for Application of Structural Weld Overlays to Pressurizer Dissimilar Metal Nozzle Welds for Third 10-Year Inservice Inspection Program Interval
ML0705803332007-03-15015 March 2007
Authorization of Relief Request No. ISI-33 for Second 10-Year and Third 10-Year ISI Interval
ML0635203182007-01-18018 January 2007
Request for Relief No. ISI-35 for Second 10-year Inservice Inspection Interval
ML0700303362007-01-18018 January 2007
Relief Request ISI-41 for the Second 10-year Inservice Inspection Interval
ML0630604782006-12-0707 December 2006
Relief Request 13R-04 for the Third 10-Year Interval Inservice Inspection
ML0629302822006-11-17017 November 2006
Relief Requests I3R-05 and I3R-06 for the Third Inservice Inspection Interval
ULNRC-05183, Requests for Relief from ASME Section XI Code Inservice Examination Requirements2006-10-25025 October 2006
Requests for Relief from ASME Section XI Code Inservice Examination Requirements
ML0614301312006-06-15015 June 2006
Relief, Third 10-Year Interval Inservice Inspection Program Relief Request I3R-02
ML0520802152005-08-18018 August 2005
Relief, Use a Subsequent Edition of ASME Code Examinations for the Third Inservice Inspection Interval
ML0515302072005-06-22022 June 2005
6/22/05 Callaway, Unit 1 - Relief Requests ISI-24,ISI-25 and ISI-26 of the Second 10-Year Inservice Inspection (ISI) Interval (Tacs. MC4435 and MC4436)
ML0507601292005-05-19019 May 2005
Relief, Request for Relief from Certain ASME Code Examinations for the Second Inservice Inspection Interval
ULNRC-05092, Revision to Approve Request for Relief from ASME Section III Requirements Regarding Non-destructive Examination of Welds Performed Under Site Repair/Replacement Program2004-11-18018 November 2004
Revision to Approve Request for Relief from ASME Section III Requirements Regarding Non-destructive Examination of Welds Performed Under Site Repair/Replacement Program
ULNRC-05049, Union Electric Company Callaway Plant Request for Relief from ASME Section XI Code Inservice Examination Requirements2004-09-0303 September 2004
Union Electric Company Callaway Plant Request for Relief from ASME Section XI Code Inservice Examination Requirements
ML0414100712004-05-19019 May 2004
Relief, ASME Code Requirements on the Use of Weld Overlay Reinforcement to Restore Wall Thickness of ASME Class 2 Carbon Steel Main Feedwater Piping.
ML0414100352004-05-19019 May 2004
Relief, Second Ten-Year Interval Inservice Inspection Program Relief Request to Use an Alternative Examination Method
ULNRC-04993, Revision of Request for Relief from ASME Section XI Requirements in Order to Temporarily Restore Wall Thickness of ASME Class 2 Carbon Steel Main Feedwater Piping by Weld Overlay Reinforcement2004-05-0707 May 2004
Revision of Request for Relief from ASME Section XI Requirements in Order to Temporarily Restore Wall Thickness of ASME Class 2 Carbon Steel Main Feedwater Piping by Weld Overlay Reinforcement
ML0409806642004-04-0707 April 2004
4/7/04 Callaway Plant - Request for Relief from ASME Code Requirements on the Use of Weld Overlay Reinforcement to Restore Wall Thickness of ASME Class 2 Carbon Steel Main Feedwater Piping
ULNRC-04879, Requests for Relief Regarding Implementation of ASME Section XI Appendix VII Requirements2003-08-14014 August 2003
Requests for Relief Regarding Implementation of ASME Section XI Appendix VII Requirements
ML0318305352003-07-0101 July 2003
Second Ten-Year Interval Inservice Inspection Program Relief Request to Use an Alternative Examination Method (Tac. MB6534)
ML0134602652002-01-30030 January 2002
Relief, Application of Risk-Informed Inservice Inspection Program for the American Society of Mechanical Engineers Boilers and Pressure Vessel Code Class 1 and 2 TAC No MB1205)
2024-08-13
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Text
May 3, 2012 MEMORANDUM TO: Docket File FROM: N. Kalyanam, Project Manager /RA/
Plant Licensing Branch IV Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation
SUBJECT:
CALLAWAY PLANT UNIT 1 - VERBAL AUTHORIZATION VR-01, PROPOSED ALTERNATIVE REGARDING ASME OM CODE REPLACEMENT INTERVAL FOR MAIN STEAM ISOLATION VALVE ACTUATOR RUPTURE DISKS (TAC NO. ME8319)
By letter dated March 30, 2012, as supplemented by letter dated April 19, 2012 (Agencywide Documents Access and Management System (ADAMS) Accession Nos. ML12090A501 and ML121150347, respectively), Union Electric Company, (the licensee) submitted alternative request VR-01 for the Callaway Plant, Unit 1, for U.S. Nuclear Regulatory Commission (NRC) review and approval.
This request pertains to inservice testing requirements for Main Steam Isolation Valve (MSIV) actuator rupture disks ABPSE0001, ABPSE0002, ABPSE0003, and ABPSE0004 at Callaway Plant, Unit 1. The licensee requested an alternative from the required replacement frequency requirement of the American Society of Mechanical Engineers (ASME) Code for Operation and Maintenance of Nuclear Power Plants (OM Code) Mandatory Appendix I, Paragraph I-1360, Test Frequency, Class 2 and 3 Nonreclosing Pressure Relief Devices, as required and conditioned by Title 10 of the Code of Federal Regulations Section 50.55a.
Specifically, an alternative was requested for the requirement to replace MSIV actuator rupture disks ABPSE0001, ABPSE0002, ABPSE0003, and ABPSE0004 every 5 years. Callaway Plant, Unit 1, had originally scheduled the rupture disks replacement during Refueling Outage 18, which began in October 2011. However, the work was removed from the outage scope based on an initial determination that the work could be done with the plant online subsequent to the outage. The rupture disks were scheduled to be replaced online in the spring of 2012 to meet the ASME OM Code requirement. However, the licensee determined that based on the 8-hour Technical Specification (TS) Limiting Conditions for Operations (LCO) and the time needed to replace the rupture disks online, the TS LCO completion time may be exceeded during this replacement activity. Therefore, the rupture disk replacement activity poses elevated risk to continued plant operations if it is performed online. Therefore, the licensee is proposing an alternative to extend the interval for replacing the rupture disks to the next plant outage providing plant conditions to replace the disks (i.e. Mode 4 or 5), but no later than the end of Refueling Outage 19, which is currently scheduled for June 2013.
Extending the replacement date until Refueling Outage 19 will not affect the functionality of the MSIVs and does not introduce any credible failure mechanism that would prevent the rupture disks from rupturing at a pressure needed for the MSIVs to perform their safety-related purpose.
Conclusion As set forth above, the NRC staff concludes that the proposed alternative described in alternative request VR-01 provides reasonable assurance that the MSIV actuator rupture disks ABPSE0001, ABPSE0002, ABPSE0003, and ABPSE0004 are operationally ready.
Accordingly, the NRC staff concludes that the licensee has adequately addressed all of the regulatory requirements set forth in 10 CFR 50.55a(a)(3)(ii), and is in compliance with the ASME OM Code requirements. Therefore, the NRC staff provides verbal authorization for the proposed alternatives described in request alternative VR-01 until the next plant outage providing plant conditions to replace the MSIV actuator rupture disks (i.e., Mode 4 or 5), but no later than the end of the Callaway Plant, Unit 1, Refueling Outage 19, which is currently scheduled for June 2013.
All other ASME Code requirements for which relief was not specifically requested and approved in this relief request remain applicable, including third-party review by the Authorized Nuclear Inservice Inspector.
The participants in the telephone call were:
NRC Mike Markley, Branch Chief, NRR/DORL/LPL4)
Tony McMurtray, Branch Chief, NRR/DE/EPTB Bob Wolfgang, NRR/DE/EPTB Zach Hollcraft, R-IV/DRP/RPB-B/
Kaly Kalyanam, NRR/DORL/LPL4 UNION ELECTRIC COMPANY Brian Pae, Main Steam System Engineer Ben Oguejiofor, Inservice Testing Engineer Christine Norman, Mechanical Design Engineer Bryan Sprock, Engineering Fix-It-Now Engineer Tom Elwood, Regulatory Affairs and Licensing Supervisor Docket No. 50-483
ML121150247 *via email OFFICE NRR/LPL4/PM NRR/LPL4/LA NRR/DE/EPTB/BC NRR/LPL4/BC NRR/LPL4/PM NAME NKalyanam JBurkhardt AMcMurtray* MMarkley NKalyanam DATE 4/25/12 4/25/12 4/23/12 5/3/12 5/3/12
