GNRO-2011/00111, Request for Additional Information Regarding Extended Power Uprate: Difference between revisions

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| issue date = 12/19/2011
| issue date = 12/19/2011
| title = Request for Additional Information Regarding Extended Power Uprate
| title = Request for Additional Information Regarding Extended Power Uprate
| author name = Krupa M A
| author name = Krupa M
| author affiliation = Entergy Operations, Inc
| author affiliation = Entergy Operations, Inc
| addressee name =  
| addressee name =  
Line 18: Line 18:


=Text=
=Text=
{{#Wiki_filter:G NRO-2011/00 111  December 19, 2011 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555
{{#Wiki_filter:Entergy Operations, Inc.
P. O. Box 756 Port Gibson, MS 39150 Michael A. Krupa Director, Extended Power Uprate Grand Gulf Nuclear Station Tel. (601) 437-6694 GNRO-2011/00111 December 19, 2011 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555


==SUBJECT:==
==SUBJECT:==
Request for Additional Information Regarding Extended Power Uprate Grand Gulf Nuclear Station, Unit 1 Docket No. 50
Request for Additional Information Regarding Extended Power Uprate Grand Gulf Nuclear Station, Unit 1 Docket No. 50-416 License No. NPF-29
-416 License No.
NPF-29


==REFERENCES:==
==REFERENCES:==
: 1. Entergy Operations, Inc. letter to the NRC (GNRO
: 1. Entergy Operations, Inc. letter to the NRC (GNRO-2010/00056),
-2010/00056), License Amendment Request  
License Amendment Request - Extended Power Uprate, September 8, 2010 (ADAMS Accession No. ML102660403)
- Extended Power Uprate , September 8, 2010 (ADAMS Accession No. ML102660403)
: 2. NRC e-mail to Entergy Operations, Inc., Grand Gulf Extended Power Uprate Reactor Systems Branch Request for Additional Information (ME4679), December 14, 2011
: 2. NRC e-mail to Entergy Operations, Inc., Grand Gulf Extended Power Uprate Reactor Systems Branch Request for Additional Information (ME4679), December 14, 2011


==Dear Sir or Madam:==
==Dear Sir or Madam:==


In Reference 1, Entergy submitted a license amendment request (LAR) to the NRC, which proposes an extended power uprate (EPU) for Grand Gulf Nuclear Station, Unit 1 (GGNS).
In Reference 1, Entergy submitted a license amendment request (LAR) to the NRC, which proposes an extended power uprate (EPU) for Grand Gulf Nuclear Station, Unit 1 (GGNS). To support its review and approval of this LAR, on October 27, 2011 the NRC staff conducted an on-site audit of the implementation of stability long-term solutions and the impact of EPU on instability and an Anticipated Transient without Scram (ATWS) event. As a result of that audit, the NRC has requested additional information (transmitted via Reference 2) pertaining to simulator scenarios reflecting EPU operating conditions, specifically:
To support its review and approval of this LAR
: 1. Provide data for worst-case ATWS long-term scenario at EPU conditions. Include plots, sequence of events, and initial conditions.
, on October 27, 2011 the NRC staff conducted an on-site audit of the implementation of stability long
: 2. Provide data for worst-case ATWS short-term pressure peak scenario at EPU conditions.
-term solutions and the impact of EPU on instability and an Anticipated Transient without Scram (ATWS) event. As a result of that audit, the NRC has requested additional information (transmitted via Reference 2) pertaining to simulator scenarios reflecting EPU operating conditions
, specifically:
: 1. Provide data for worst
-case ATWS long
-term scenario at EPU conditions.
Include plots, sequence of events, and initial conditions.
Include plots, sequence of events, and initial conditions.
: 2. Provide data for wor st-case ATWS short
Entergy is currently in the process of incorporating EPU-related system modifications and operating conditions into the GGNS simulator. Based on the current schedule, Entergy commits to provide the requested data to the NRC on or before February 15, 2012.
-term pressure peak scenario at EPU conditions.
No change is needed to the no significant hazards consideration included in the initial LAR (Reference 1) as a result of the additional information provided. This letter contains one new commitment, which is identified in the attachment.
Include plots, sequence of events, and initial conditions.
 
Entergy is currently in the process of incorporating EPU
GNRO-2011/00111 Page 2 of 3 If you have any questions or require additional information, please contact Mr. Jerry Burford at 601-368-5755.
-related system modifications and operating conditions into the GGNS simulator. Based on the current schedule, Entergy commits to provide the requested data to the NRC on or before February 15, 2012.
Sincerely, MAK/ghd
No change is needed to the no significant hazards consideration includ ed in the initial LAR (Reference 1) as a result of the additional information provided. This letter contains one new commitment, which is identified in the attachment
. Entergy Operations, Inc.
P. O. Box 756 Port Gibson, MS  39150 Michael A. Krupa Director , Extended Power Uprate Grand Gulf Nuclear Station Tel.  (601) 437
-6694 GNRO-2011/00111 Page 2 of 3   If you have any questions or require additional information, please contact Mr. Jerry Burford at 601-368-5755. Sincerely,   MAK/ghd


==Attachment:==
==Attachment:==
List of Regulatory Commitments
List of Regulatory Commitments


GNRO-2011/00 111 Page 3 of 3   cc: Mr. Elmo E. Collins, Jr.
GNRO-2011/00111 Page 3 of 3 cc: Mr. Elmo E. Collins, Jr.
Regional Administrator, Region IV U. S. Nuclear Regulatory Commission 612 East Lamar Blvd., Suite 400 Arlington, TX 76011
Regional Administrator, Region IV U. S. Nuclear Regulatory Commission 612 East Lamar Blvd., Suite 400 Arlington, TX 76011-4125 NRC Senior Resident Inspector Grand Gulf Nuclear Station Port Gibson, MS 39150 U. S. Nuclear Regulatory Commission ATTN: Mr. A. B. Wang, NRR/DORL ATTN: ADDRESSEE ONLY ATTN: Courier Delivery Only Mail Stop OWFN/8 B1 11555 Rockville Pike Rockville, MD 20852-2378 State Health Officer Mississippi Department of Health P. O. Box 1700 Jackson, MS 39215-1700
-4125   NRC Senior Resident Inspector Grand Gulf Nuclear Station Port Gibson, MS 39150 U. S. Nuclear Regulatory Commission ATTN: Mr. A. B. Wang, NRR/DORL ATTN: ADDRESSEE ONLY ATTN: Courier Delivery Only Mail Stop OWFN/8 B1 11555 Rockville Pike Rockville, MD 20852
-2378   State Health Officer Mississippi Department of Health P. O. Box 1700 Jackson, MS 39215
-1700 Attachment GNRO-2011/00111 Grand Gulf Nuclear Station Extended Power Uprate  LIST OF REGULATORY COMMITMENTS


Attachment to GNRO-2011/00111 Page 1 of 1 LIST OF REGULATORY COMMITMENTS
Attachment GNRO-2011/00111 Grand Gulf Nuclear Station Extended Power Uprate LIST OF REGULATORY COMMITMENTS


The following table identifies those actions committed to by Entergy in this document. Any other statements in this submittal are provided for information purposes and are not considered to be regulatory commitments.
Attachment to GNRO-2011/00111 Page 1 of 1 LIST OF REGULATORY COMMITMENTS The following table identifies those actions committed to by Entergy in this document. Any other statements in this submittal are provided for information purposes and are not considered to be regulatory commitments.
COMMITMENT TYPE (Check one)
TYPE              SCHEDULED COMMITMENT                               (Check one)         COMPLETION ONE-TIME    CONTINUING            DATE ACTION      COMPLIANCE      (If Required)
SCHEDULED COMPLETION DATE (If Required)
Entergy will provide data for the following simulator                                 2/15/2011 scenario runs on or before February 15, 2012:
ONE-TIME ACTION CONTINUING COMPLIANCE Entergy will provide data for the following simulator scenario runs on or before February 15, 2012:
: 1. Worst-case ATWS long-term scenario at EPU conditions. Include plots, sequence of events, and initial conditions.
: 1. Worst-case ATWS long
: 2. Worst-case ATWS short-term pressure peak scenario at EPU conditions. Include plots, sequence of events, and initial conditions.}}
-term scenario at EPU conditions.
Include plots, sequence of events, and initial conditions.
: 2. Worst-case ATWS short
-term pressure peak scenario at EPU conditions.
Include plots, sequence of events, and initial conditions.
2/15/2011}}

Latest revision as of 11:44, 12 November 2019

Request for Additional Information Regarding Extended Power Uprate
ML113530656
Person / Time
Site: Grand Gulf Entergy icon.png
Issue date: 12/19/2011
From: Krupa M
Entergy Operations
To:
Office of Nuclear Reactor Regulation, Document Control Desk
References
GNRO-2011/00111, TAC ME4679
Download: ML113530656 (5)
v • d • e


Text

Entergy Operations, Inc.

P. O. Box 756 Port Gibson, MS 39150 Michael A. Krupa Director, Extended Power Uprate Grand Gulf Nuclear Station Tel. (601) 437-6694 GNRO-2011/00111 December 19, 2011 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555

SUBJECT:

Request for Additional Information Regarding Extended Power Uprate Grand Gulf Nuclear Station, Unit 1 Docket No. 50-416 License No. NPF-29

REFERENCES:

1. Entergy Operations, Inc. letter to the NRC (GNRO-2010/00056),

License Amendment Request - Extended Power Uprate, September 8, 2010 (ADAMS Accession No. ML102660403)

2. NRC e-mail to Entergy Operations, Inc., Grand Gulf Extended Power Uprate Reactor Systems Branch Request for Additional Information (ME4679), December 14, 2011

Dear Sir or Madam:

In Reference 1, Entergy submitted a license amendment request (LAR) to the NRC, which proposes an extended power uprate (EPU) for Grand Gulf Nuclear Station, Unit 1 (GGNS). To support its review and approval of this LAR, on October 27, 2011 the NRC staff conducted an on-site audit of the implementation of stability long-term solutions and the impact of EPU on instability and an Anticipated Transient without Scram (ATWS) event. As a result of that audit, the NRC has requested additional information (transmitted via Reference 2) pertaining to simulator scenarios reflecting EPU operating conditions, specifically:

1. Provide data for worst-case ATWS long-term scenario at EPU conditions. Include plots, sequence of events, and initial conditions.
2. Provide data for worst-case ATWS short-term pressure peak scenario at EPU conditions.

Include plots, sequence of events, and initial conditions.

Entergy is currently in the process of incorporating EPU-related system modifications and operating conditions into the GGNS simulator. Based on the current schedule, Entergy commits to provide the requested data to the NRC on or before February 15, 2012.

No change is needed to the no significant hazards consideration included in the initial LAR (Reference 1) as a result of the additional information provided. This letter contains one new commitment, which is identified in the attachment.

GNRO-2011/00111 Page 2 of 3 If you have any questions or require additional information, please contact Mr. Jerry Burford at 601-368-5755.

Sincerely, MAK/ghd

Attachment:

List of Regulatory Commitments

GNRO-2011/00111 Page 3 of 3 cc: Mr. Elmo E. Collins, Jr.

Regional Administrator, Region IV U. S. Nuclear Regulatory Commission 612 East Lamar Blvd., Suite 400 Arlington, TX 76011-4125 NRC Senior Resident Inspector Grand Gulf Nuclear Station Port Gibson, MS 39150 U. S. Nuclear Regulatory Commission ATTN: Mr. A. B. Wang, NRR/DORL ATTN: ADDRESSEE ONLY ATTN: Courier Delivery Only Mail Stop OWFN/8 B1 11555 Rockville Pike Rockville, MD 20852-2378 State Health Officer Mississippi Department of Health P. O. Box 1700 Jackson, MS 39215-1700

Attachment GNRO-2011/00111 Grand Gulf Nuclear Station Extended Power Uprate LIST OF REGULATORY COMMITMENTS

Attachment to GNRO-2011/00111 Page 1 of 1 LIST OF REGULATORY COMMITMENTS The following table identifies those actions committed to by Entergy in this document. Any other statements in this submittal are provided for information purposes and are not considered to be regulatory commitments.

TYPE SCHEDULED COMMITMENT (Check one) COMPLETION ONE-TIME CONTINUING DATE ACTION COMPLIANCE (If Required)

Entergy will provide data for the following simulator 2/15/2011 scenario runs on or before February 15, 2012:

1. Worst-case ATWS long-term scenario at EPU conditions. Include plots, sequence of events, and initial conditions.
2. Worst-case ATWS short-term pressure peak scenario at EPU conditions. Include plots, sequence of events, and initial conditions.
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