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| number = ML101590809
| number = ML101590809
| issue date = 06/08/2010
| issue date = 06/08/2010
| title = Nine Mile Point, Unit 2, Request for Additional Information Extended Power Uprate - Probabilistic Risk Assessment Review
| title = Request for Additional Information Extended Power Uprate - Probabilistic Risk Assessment Review
| author name = Guzman R V
| author name = Guzman R
| author affiliation = NRC/NRR/DORL
| author affiliation = NRC/NRR/DORL
| addressee name = Darling T H
| addressee name = Darling T
| addressee affiliation = Nine Mile Point Nuclear Station, LLC
| addressee affiliation = Nine Mile Point Nuclear Station, LLC
| docket = 05000410
| docket = 05000410
| license number = NPF-069
| license number = NPF-069
| contact person = Guzman R V, NRR/DORL, 415-1030
| contact person = Guzman R, NRR/DORL, 415-1030
| case reference number = TAC ME1476
| case reference number = TAC ME1476
| document type = E-Mail
| document type = E-Mail
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=Text=
=Text=
{{#Wiki_filter:From: Guzman, Richard Sent: Tuesday, June 08, 2010 12:53 PM To: Darling, Theresa H Cc: Dosa, John J  
{{#Wiki_filter:From:
Guzman, Richard Sent:
Tuesday, June 08, 2010 12:53 PM To:
Darling, Theresa H Cc:
Dosa, John J  


==Subject:==
==Subject:==
Follow-up RAI Question - Nine Mile Point Unit 2 EPU - Probabilistic Risk Assessment Review Theresa, The NRC staff is reviewing the Nine Mile Point Nuclear Station, LLC (NMPNS or the licensee) license amendment request application dated May 27, 2009, and has determined that additional information requested below will be needed to complete its review in the probabilistic risk assessment (PRA) area. Below is the staff's request for additional information (RAI). The RAI was discussed with you on June 8, 2010, and it was agreed that your response would be provided within 30 days of the date of this request.  
Follow-up RAI Question - Nine Mile Point Unit 2 EPU - Probabilistic Risk Assessment Review
: Theresa, The NRC staff is reviewing the Nine Mile Point Nuclear Station, LLC (NMPNS or the licensee) license amendment request application dated May 27, 2009, and has determined that additional information requested below will be needed to complete its review in the probabilistic risk assessment (PRA) area. Below is the staffs request for additional information (RAI). The RAI was discussed with you on June 8, 2010, and it was agreed that your response would be provided within 30 days of the date of this request.
: 1. Section 2.13.1.3.2 of the submittal provides a brief explanation of the impact of EPU on fire ignition frequency for the NMP2 PRA. It states that frequency of fires is not dependent on reactor power or operation, however; it further states that there is a potential risk increase due to decrease in human reliability. The greatest increase in risk from EPU implementation derives from less time operators have to perform necessary actions. The EPU may not have an impact on Fire Ignition Frequency or Fire Mitigation; however, it may have an impact on operator actions after a fire has been identified and/or mitigated due to less available time.
: 1. Section 2.13.1.3.2 of the submittal provides a brief explanation of the impact of EPU on fire ignition frequency for the NMP2 PRA. It states that frequency of fires is not dependent on reactor power or operation, however; it further states that there is a potential risk increase due to decrease in human reliability. The greatest increase in risk from EPU implementation derives from less time operators have to perform necessary actions. The EPU may not have an impact on Fire Ignition Frequency or Fire Mitigation; however, it may have an impact on operator actions after a fire has been identified and/or mitigated due to less available time.
Please provide additional information explaining the potential decreases in time related to operator actions for fire scenarios. Describe the potential risk increases due to decreases in human reliability for fire scenarios resulting from the proposed EPU implementation.
Please provide additional information explaining the potential decreases in time related to operator actions for fire scenarios. Describe the potential risk increases due to decreases in human reliability for fire scenarios resulting from the proposed EPU implementation.
Thanks, Rich Guzman Sr. Project Manager NRR/DORL US NRC 301-415-1030 Richard.Guzman@nrc.gov E-mail Properties Mail Envelope Properties (92E0E77F3622DA40B501E8D45083D5D9508499C92D)  
: Thanks, Rich Guzman Sr. Project Manager NRR/DORL US NRC 301-415-1030 Richard.Guzman@nrc.gov E-mail Properties Mail Envelope Properties (92E0E77F3622DA40B501E8D45083D5D9508499C92D)  


==Subject:==
==Subject:==
Follow-up RAI Question - Nine Mile Point Unit 2 EPU - Probabilistic Risk Assessment Review Sent Date:       6/8/2010 12:53:01 PM Received Date:       6/8/2010 12:52:00 PM From:               Guzman, Richard Created By:        Richard.Guzman@nrc.gov
Follow-up RAI Question - Nine Mile Point Unit 2 EPU - Probabilistic Risk Assessment Review Sent Date: 6/8/2010 12:53:01 PM Received Date: 6/8/2010 12:52:00 PM From: Guzman, Richard  


Recipients:
Created By: Richard.Guzman@nrc.gov Recipients:
Theresa.Darling@cengllc.com (Darling, Theresa H)
Theresa.Darling@cengllc.com (Darling, Theresa H)
Tracking Status: None John.Dosa@cengllc.com (Dosa, John J)
Tracking Status: None John.Dosa@cengllc.com (Dosa, John J)
Tracking Status: None  
Tracking Status: None Post Office:
 
HQCLSTR01.nrc.gov Files Size Date & Time MESSAGE 11045 6/8/2010 Options Expiration Date:
Post Office:
Priority: olImportanceNormal ReplyRequested: False Return Notification: False Sensitivity: olNormal Recipients received:}}
HQCLSTR01.nrc.gov  
 
Files               Size       Date & Time  
 
MESSAGE       11045       6/8/2010  
 
Options Expiration Date:
Priority:                       olImportanceNormal ReplyRequested:       False Return Notification:       False  
 
Sensitivity:         olNormal Recipients received:}}

Latest revision as of 04:37, 14 January 2025

Request for Additional Information Extended Power Uprate - Probabilistic Risk Assessment Review
ML101590809
Person / Time
Site: Nine Mile Point Constellation icon.png
Issue date: 06/08/2010
From: Richard Guzman
Division of Operating Reactor Licensing
To: Darling T
Nine Mile Point
Guzman R, NRR/DORL, 415-1030
References
TAC ME1476
Download: ML101590809 (1)
v • d • e


Text

From:

Guzman, Richard Sent:

Tuesday, June 08, 2010 12:53 PM To:

Darling, Theresa H Cc:

Dosa, John J

Subject:

Follow-up RAI Question - Nine Mile Point Unit 2 EPU - Probabilistic Risk Assessment Review

Theresa, The NRC staff is reviewing the Nine Mile Point Nuclear Station, LLC (NMPNS or the licensee) license amendment request application dated May 27, 2009, and has determined that additional information requested below will be needed to complete its review in the probabilistic risk assessment (PRA) area. Below is the staffs request for additional information (RAI). The RAI was discussed with you on June 8, 2010, and it was agreed that your response would be provided within 30 days of the date of this request.
1. Section 2.13.1.3.2 of the submittal provides a brief explanation of the impact of EPU on fire ignition frequency for the NMP2 PRA. It states that frequency of fires is not dependent on reactor power or operation, however; it further states that there is a potential risk increase due to decrease in human reliability. The greatest increase in risk from EPU implementation derives from less time operators have to perform necessary actions. The EPU may not have an impact on Fire Ignition Frequency or Fire Mitigation; however, it may have an impact on operator actions after a fire has been identified and/or mitigated due to less available time.

Please provide additional information explaining the potential decreases in time related to operator actions for fire scenarios. Describe the potential risk increases due to decreases in human reliability for fire scenarios resulting from the proposed EPU implementation.

Thanks, Rich Guzman Sr. Project Manager NRR/DORL US NRC 301-415-1030 Richard.Guzman@nrc.gov E-mail Properties Mail Envelope Properties (92E0E77F3622DA40B501E8D45083D5D9508499C92D)

Subject:

Follow-up RAI Question - Nine Mile Point Unit 2 EPU - Probabilistic Risk Assessment Review Sent Date: 6/8/2010 12:53:01 PM Received Date: 6/8/2010 12:52:00 PM From: Guzman, Richard

Created By: Richard.Guzman@nrc.gov Recipients:

Theresa.Darling@cengllc.com (Darling, Theresa H)

Tracking Status: None John.Dosa@cengllc.com (Dosa, John J)

Tracking Status: None Post Office:

HQCLSTR01.nrc.gov Files Size Date & Time MESSAGE 11045 6/8/2010 Options Expiration Date:

Priority: olImportanceNormal ReplyRequested: False Return Notification: False Sensitivity: olNormal Recipients received:

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