ML16126A193

GSI-191 Resolution Plan

ML16126A193
Person / Time
Site:	Calvert Cliffs
Issue date:	05/02/2016
From:	Flaherty M Exelon Generation Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
GSI-191
Download: ML16126A193 (4)

Text

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7 JliBi' Exelon Generation May 2, 2016 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555 Mark D. Flaherty Plant Manager Calvert Cliffs Nuclear Power Plant 1650 Calvert Cliffs Parkway Lusby, MD 20657 410 495 5205 Office 410 495 5444 Fax 443 534 5476 Mobile www.exeloncorp.com mark.flaherty@exelon.com 10 CFR 50.46 Calvert Cliffs Nuclear Power Plant, Unit Nos. 1 and 2

Subject:

Renewed Facility Operating License Nos. DPR-53 and DPR-69 NRC Docket Nos. 50-317 and 50-318 Calvert Cliffs GSl-191 Resolution Plan

Reference:

1.

Letter from G. H. Gellrich (CCNPP) to Document Control Desk (NRC), dated November 17, 2015, Calvert Cliffs GSl-191 Resolution Plan In Reference 1, we made five commitments on our risk-informed resolution to Generic Safety Issue 191 (GSl-191) and response to Generic Letter 2004-02. Three of these commitments had a due date of December 31, 2016. This date was based on the assumption that the Nuclear Regulatory Commission's Safety Evaluations on the South Texas Project Risk Informed GSl-191 Pilot submittal and WCAP-17788 would be issued in the 2nd quarter of 2016. The schedule for publication of these Safety Evaluations has now been extended beyond the 2nd quarter of 2016.

Therefore, we are revising three of the commitment dates made in Reference 1.

This letter contains our revised list of 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 May 2, 2016 Page 2 I declare under penalty of perjury that the foregoing is true and correct. Executed on May 2, 2016.

Respectfully, M~n~~

Mark D. Flaherty Plant Manager MDF/KLG/bjm

Attachment:

(1)

List of Regulatory Commitments cc:

NRG Project Manager, Calvert Cliffs NRG Regional Administrator, Region I NRG Resident Inspector, Calvert Cliffs S. Gray, MD-DNR

ATTACHMENT (1)

LIST OF REGULATORY COMMITMENTS Calvert Cliffs Nuclear Power Plant May2, 2016

ATIACHMENT (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 Calvert Cliffs will complete any necessary insulation replacements or 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 remediation, or other identified plant changes no later than the 2019 refueling outage for Calvert Cliffs Unit 2.

This completion date is predicated on the successful completion of our Option 2 approach.

Calvert Cliffs will establish plant-specific in-vessel debris limits for Calvert Cliffs Units 1 and 2 in accordance with the approved WCAP-16793 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 for resolving the GSl-191 issue, then Calvert Cliffs will submit a new resolution plan.

If the Calvert Cliff's Option 2b risk-informed approach is successful for resolving the GSl-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.

1 Date 5/1/2018 (Unit 1) 5/1/2019 (Unit 2)

No later than three months after NRC issuance of the Safety Evaluation on the South Texas Project Risk-Informed GSl-191 Pilot Project and the Safety Evaluation on WCAP-17788, whichever is later.

No later than three months after N RC issuance of the Safety Evaluation on the South Texas Project Risk-Informed GSl-191 Pilot Project and the Safety.

Evaluation on WCAP-17788, whichever is later.

No later than three months after NRC issuance of the Safety Evaluation on the South Texas Project Risk-Informed GSl-191 Pilot Project and the Safety Evaluation on WCAP-17788, whichever is later.

.Jllllllli!

7 JliBi' Exelon Generation May 2, 2016 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555 Mark D. Flaherty Plant Manager Calvert Cliffs Nuclear Power Plant 1650 Calvert Cliffs Parkway Lusby, MD 20657 410 495 5205 Office 410 495 5444 Fax 443 534 5476 Mobile www.exeloncorp.com mark.flaherty@exelon.com 10 CFR 50.46 Calvert Cliffs Nuclear Power Plant, Unit Nos. 1 and 2

Subject:

Renewed Facility Operating License Nos. DPR-53 and DPR-69 NRC Docket Nos. 50-317 and 50-318 Calvert Cliffs GSl-191 Resolution Plan

Reference:

1.

Letter from G. H. Gellrich (CCNPP) to Document Control Desk (NRC), dated November 17, 2015, Calvert Cliffs GSl-191 Resolution Plan In Reference 1, we made five commitments on our risk-informed resolution to Generic Safety Issue 191 (GSl-191) and response to Generic Letter 2004-02. Three of these commitments had a due date of December 31, 2016. This date was based on the assumption that the Nuclear Regulatory Commission's Safety Evaluations on the South Texas Project Risk Informed GSl-191 Pilot submittal and WCAP-17788 would be issued in the 2nd quarter of 2016. The schedule for publication of these Safety Evaluations has now been extended beyond the 2nd quarter of 2016.

Therefore, we are revising three of the commitment dates made in Reference 1.

This letter contains our revised list of 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 May 2, 2016 Page 2 I declare under penalty of perjury that the foregoing is true and correct. Executed on May 2, 2016.

Respectfully, M~n~~

Mark D. Flaherty Plant Manager MDF/KLG/bjm

Attachment:

(1)

List of Regulatory Commitments cc:

NRG Project Manager, Calvert Cliffs NRG Regional Administrator, Region I NRG Resident Inspector, Calvert Cliffs S. Gray, MD-DNR

ATTACHMENT (1)

LIST OF REGULATORY COMMITMENTS Calvert Cliffs Nuclear Power Plant May2, 2016

ATIACHMENT (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 Calvert Cliffs will complete any necessary insulation replacements or 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 remediation, or other identified plant changes no later than the 2019 refueling outage for Calvert Cliffs Unit 2.

This completion date is predicated on the successful completion of our Option 2 approach.

Calvert Cliffs will establish plant-specific in-vessel debris limits for Calvert Cliffs Units 1 and 2 in accordance with the approved WCAP-16793 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 for resolving the GSl-191 issue, then Calvert Cliffs will submit a new resolution plan.

If the Calvert Cliff's Option 2b risk-informed approach is successful for resolving the GSl-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.

1 Date 5/1/2018 (Unit 1) 5/1/2019 (Unit 2)

No later than three months after NRC issuance of the Safety Evaluation on the South Texas Project Risk-Informed GSl-191 Pilot Project and the Safety Evaluation on WCAP-17788, whichever is later.

No later than three months after N RC issuance of the Safety Evaluation on the South Texas Project Risk-Informed GSl-191 Pilot Project and the Safety.

Evaluation on WCAP-17788, whichever is later.

No later than three months after NRC issuance of the Safety Evaluation on the South Texas Project Risk-Informed GSl-191 Pilot Project and the Safety Evaluation on WCAP-17788, whichever is later.