ML15324A091
| ML15324A091 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 11/17/2015 |
| From: | George Gellrich Exelon Generation Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| GL-2004-02, GSI-191 | |
| Download: ML15324A091 (4) | |
Text
~Exeton Generation George Gellrich Site Vice President Calvert Cliffs Nuclear Power Plant 1650 Calvert Cliffs Parkway Lusby, MD 20657 410 495 5200 Office 717 497 3463 Mobile www.exeloncorp.com george~gellrich@exeloncorp~com 10 CFR 50.46 November 17, 2015 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555 Calvert Cliffs Nuclear Power Plant, Unit Nos. 1 and 2 Renewed Facility Operating License Nos. DPR-53 and DPR-69 NRC Docket Nos. 50-317 and 50-318
Subject:
Calvert Cliffs GS1-191 Resolution Plan
References:
- 1.
Letter from G. H. Gellinch (CCNPP) to Document Control Desk (NRC), dated May 16, 2013, Calvert Cliffs GSI-191 Resolution Plan
- 2.
Nuclear Regulatory Commission Staff Requirements, dated December 14, 2012, SECY-12-0093, Closure Options for Generic Safety Issue-191, Assessment of Debris Accumulation on Pressurized-Water Reactor Sump Performance In Reference 1, we described our plan for resolving Generic Safety Issue 191 (GS1-191) and responding to Generic Letter 2004-02.
The plan described was a parallel deterministic approach with refined chemical effects testing and the risk-informed resolution approach, both consistent with Option 2 as identified in SECY-12-0093, Reference 2. Also in Reference 1 we made five commitments consistent with our parallel approaches.
We have now abandoned the deterministic approach with refined chemical effects testing and are following the risk-informed approach to resolve GS1-191 and respond to Generic Letter 2004-02. Therefore, we are revising the commitments made in Reference 1. This letter contains our revised regulatory commitments as listed in Attachment (1).
Should you have questions regarding this matter, please contact Mr. Larry D. Smith at (410) 495-5219.
Document Control Desk November 17, 2015 Page 2 I declare under penalty of perjury that the foregoing is true and correct.
Executed on November 17, 2015.
Respectfully, J
George H. Gelirich Site Vice President GHG/KLG/bjm
Attachment:
(1)
NRC Project Manager, Calvert Cliffs NRC Regional Administrator, Region I NRC Resident Inspector, Calvert Cliffs S. Gray, MD-DNR
ATTACHMENT (1)
LIST OF REGULATORY COMMITMENTS Calvert Cliffs Nuclear Power Plant November 17, 2015
ATTACHMENT (1)
LIST OF REGULATORY COMMITMENTS The table below lists the actions committed to in this letter. Any other statements in this letter are provided for information purposes and are not considered to be regulatory commitments.
Regulatory Commitment Date Calvert Cliffs will complete any necessary insulation replacements or 5/1/2018 (Unit 1) remediation, or other identified plant changes no later than the 2018 refueling outage for Calvert Cliffs Unit 1.
This completion date is predicated on the successful completion of our Option 2 approach.
Calvert Cliffs will complete any necessary insulation replacements or 5/1/2019 (Unit 2) remediation, or other identified plant changes no later than the 2019 refueling outage for Calvert Cliffs Unit 2.
Thils completion date is predicated on the successful completion of our Option 2 approach.
Calvert Cliffs will establish plant-specific in-vessel debris limits for 12/31/2016 Calvert Cliffs Units 1 and 2 in accordance with the approved WCAP-1 6793 methodology.
The plant-specific in-vessel debris limits will be submitted with the Calvert Cliffs final submittal for GL 2004-02.
If the Calvert Cliff's Option 2b risk-informed approach is not successful 12/31/2016 for resolving the GSI-191 issue, then Calvert Cliffs will submit a new resolution plan.
If the Calvert Cliff's Option 2b risk-informed approach is successful for 12/31/2016 resolving the GSI-191 issue, then Calvert Cliffs will submit a final updated supplemental response to support closure of GL 2004-02 for Calvert Cliffs Units 1 and 2 by December 31, 2016.
1
~Exeton Generation George Gellrich Site Vice President Calvert Cliffs Nuclear Power Plant 1650 Calvert Cliffs Parkway Lusby, MD 20657 410 495 5200 Office 717 497 3463 Mobile www.exeloncorp.com george~gellrich@exeloncorp~com 10 CFR 50.46 November 17, 2015 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555 Calvert Cliffs Nuclear Power Plant, Unit Nos. 1 and 2 Renewed Facility Operating License Nos. DPR-53 and DPR-69 NRC Docket Nos. 50-317 and 50-318
Subject:
Calvert Cliffs GS1-191 Resolution Plan
References:
- 1.
Letter from G. H. Gellinch (CCNPP) to Document Control Desk (NRC), dated May 16, 2013, Calvert Cliffs GSI-191 Resolution Plan
- 2.
Nuclear Regulatory Commission Staff Requirements, dated December 14, 2012, SECY-12-0093, Closure Options for Generic Safety Issue-191, Assessment of Debris Accumulation on Pressurized-Water Reactor Sump Performance In Reference 1, we described our plan for resolving Generic Safety Issue 191 (GS1-191) and responding to Generic Letter 2004-02.
The plan described was a parallel deterministic approach with refined chemical effects testing and the risk-informed resolution approach, both consistent with Option 2 as identified in SECY-12-0093, Reference 2. Also in Reference 1 we made five commitments consistent with our parallel approaches.
We have now abandoned the deterministic approach with refined chemical effects testing and are following the risk-informed approach to resolve GS1-191 and respond to Generic Letter 2004-02. Therefore, we are revising the commitments made in Reference 1. This letter contains our revised regulatory commitments as listed in Attachment (1).
Should you have questions regarding this matter, please contact Mr. Larry D. Smith at (410) 495-5219.
Document Control Desk November 17, 2015 Page 2 I declare under penalty of perjury that the foregoing is true and correct.
Executed on November 17, 2015.
Respectfully, J
George H. Gelirich Site Vice President GHG/KLG/bjm
Attachment:
(1)
NRC Project Manager, Calvert Cliffs NRC Regional Administrator, Region I NRC Resident Inspector, Calvert Cliffs S. Gray, MD-DNR
ATTACHMENT (1)
LIST OF REGULATORY COMMITMENTS Calvert Cliffs Nuclear Power Plant November 17, 2015
ATTACHMENT (1)
LIST OF REGULATORY COMMITMENTS The table below lists the actions committed to in this letter. Any other statements in this letter are provided for information purposes and are not considered to be regulatory commitments.
Regulatory Commitment Date Calvert Cliffs will complete any necessary insulation replacements or 5/1/2018 (Unit 1) remediation, or other identified plant changes no later than the 2018 refueling outage for Calvert Cliffs Unit 1.
This completion date is predicated on the successful completion of our Option 2 approach.
Calvert Cliffs will complete any necessary insulation replacements or 5/1/2019 (Unit 2) remediation, or other identified plant changes no later than the 2019 refueling outage for Calvert Cliffs Unit 2.
Thils completion date is predicated on the successful completion of our Option 2 approach.
Calvert Cliffs will establish plant-specific in-vessel debris limits for 12/31/2016 Calvert Cliffs Units 1 and 2 in accordance with the approved WCAP-1 6793 methodology.
The plant-specific in-vessel debris limits will be submitted with the Calvert Cliffs final submittal for GL 2004-02.
If the Calvert Cliff's Option 2b risk-informed approach is not successful 12/31/2016 for resolving the GSI-191 issue, then Calvert Cliffs will submit a new resolution plan.
If the Calvert Cliff's Option 2b risk-informed approach is successful for 12/31/2016 resolving the GSI-191 issue, then Calvert Cliffs will submit a final updated supplemental response to support closure of GL 2004-02 for Calvert Cliffs Units 1 and 2 by December 31, 2016.
1