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| issue date = 07/09/2009
| issue date = 07/09/2009
| title = NRC Opening Remarks Discuss the Draft Us Nuclear Regulatory Commission Request for Additional Information for Generic Letter GL-2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressur
| title = NRC Opening Remarks Discuss the Draft Us Nuclear Regulatory Commission Request for Additional Information for Generic Letter GL-2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressur
| author name = Scott M L
| author name = Scott M
| author affiliation = NRC/NRR
| author affiliation = NRC/NRR
| addressee name =  
| addressee name =  
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| document type = Slides and Viewgraphs
| document type = Slides and Viewgraphs
| page count = 5
| page count = 5
| project =
| stage = Draft RAI
}}
}}


=Text=
=Text=
{{#Wiki_filter:2p, U.S.NRC UNITED STATES NUCLEAR REGULATORY COMMISSION Protecting People and the Environment Introduction for Public Meeting with Comanche Peak on Generic Safety Issue 191 Michael Scott Office of Nuclear Reactor Regulation July 9, 2009 1 SU.S.NRC Purpose of Meeting UNITED STATES NUCLEAR REGULATORY COMMISSION P r o e o e t n Protecting People and the Environment Discuss in detail licensee's planned path forward on each RAI for which, based on agenda-setting phone call, NRC staff is not yet confident licensee is on success path* Attempt to reach understanding such that:-NRC staff is confident licensee's overall approach will succeed in showing adequate ECCS strainer performance
{{#Wiki_filter:2p, U.S.NRC UNITED STATES NUCLEAR REGULATORY COMMISSION ProtectingPeople and the Environment Introduction for Public Meeting with Comanche Peak on Generic Safety Issue 191 Michael Scott Office of Nuclear Reactor Regulation July 9, 2009 1
-Licensee can have confidence that its path forward, if carried out consistent with what it has told the staff, will not result in another round of RAIs 2 S U.S.N C Precepts for the discussion UNITED STATES NUCLEAR REGULATORY COMMISSION Protecting People and the Environment Emphasis for the meeting is licensee's methods in each subject area; results may be discussed as appropriate to support conclusions on method adequacy* Licensee bears the burden of showing that its strainer will function adequately in event of a DBA* NRC position is that. an adequate head loss test is needed to show satisfactory strainer performance unless licensee justifies that their strainer has significant nonfiltering area* Perfection is not the standard, but staff has not been able to reach conclusions of adequacy in the face of numerous evident nonconservatisms 3
 
protecting People and the Environment(C ontinued)No particular degree of conservatism required in any subject area; staff will not claim treatment of an area is "not sufficiently conservative" Staff will not carry concerns such as "may be nonconservative" without specific basis 4 ProteCting People and the Environment Approach t Meeting For each RAI under discussion as determined during agenda-setting telecon:-Licensee discusses path forward-Staff asks questions/states any concerns-Open discussion between the two parties-Each side concludes with its position-PM notes positions and agreements (as applicable)
SU.S.NRC UNITED STATES NUCLEAR REGULATORY COMMISSION ProtectingPeople and the Environment Purpose of Meeting P r o e o     e t n Discuss in detail licensee's planned path forward on each RAI for which, based on agenda-setting phone call, NRC staff is not yet confident licensee is on success path
* After all RAIs discussed,both parties caucus privately on any RAIs for which agreement was not reached* Final discussion
* Attempt to reach understanding such that:
-Either party may identify a change in its position(s)
          -       NRC staff is confident licensee's overall approach will succeed in showing adequate ECCS strainer performance
-Staff will provide overall conclusion regarding its confidence in.licensee's approach to issue resolution
          -       Licensee can have confidence that its path forward, if carried out consistent with what it has told the staff, will not result in another round of RAIs 2
 
S U.S.N C UNITED STATES NUCLEAR REGULATORY COMMISSION ProtectingPeople and the Environment Precepts for the discussion Emphasis for the meeting is licensee's methods in each subject area; results may be discussed as appropriate to support conclusions on method adequacy
* Licensee bears the burden of showing that its strainer will function adequately in event of a DBA
* NRC position is that. an adequate head loss test is needed to show satisfactory strainer performance unless licensee justifies that their strainer has significant nonfiltering area
* Perfection is not the standard, but staff has not been able to reach conclusions of adequacy in the face of numerous evident nonconservatisms 3
 
protectingPeople and the Environment(C ontinued)
No particular degree of conservatism required in any subject area; staff will not claim treatment of an area is "not sufficiently conservative" Staff will not carry concerns such as "may be nonconservative" without specific basis 4
 
ProteCtingPeople and the Environment Approach t Meeting For each RAI under discussion as determined during agenda-setting telecon:
    - Licensee discusses path forward
    -   Staff asks questions/states any concerns
    - Open discussion between the two parties
  - Each side concludes with its position
    -   PM notes positions and agreements (as applicable)
* After all RAIs discussed,both parties caucus privately on any RAIs for which agreement was not reached
* Final discussion
  - Either party may identify a change in its position(s)
  - Staff will provide overall conclusion regarding its confidence in
        .licensee's approach to issue resolution
* Public comment opportunity
* Public comment opportunity
* Results and agreements/disagreements documented in meeting summary 5}}
* Results and agreements/disagreements documented in meeting summary 5}}

Latest revision as of 05:14, 14 November 2019

NRC Opening Remarks Discuss the Draft Us Nuclear Regulatory Commission Request for Additional Information for Generic Letter GL-2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressur
ML091940276
Person / Time
Site: Comanche Peak  Luminant icon.png
Issue date: 07/09/2009
From: Michael Scott
Office of Nuclear Reactor Regulation
To:
References
GSI 191
Download: ML091940276 (5)
v • d • e


Text

2p, U.S.NRC UNITED STATES NUCLEAR REGULATORY COMMISSION ProtectingPeople and the Environment Introduction for Public Meeting with Comanche Peak on Generic Safety Issue 191 Michael Scott Office of Nuclear Reactor Regulation July 9, 2009 1

SU.S.NRC UNITED STATES NUCLEAR REGULATORY COMMISSION ProtectingPeople and the Environment Purpose of Meeting P r o e o e t n Discuss in detail licensee's planned path forward on each RAI for which, based on agenda-setting phone call, NRC staff is not yet confident licensee is on success path

  • Attempt to reach understanding such that:

- NRC staff is confident licensee's overall approach will succeed in showing adequate ECCS strainer performance

- Licensee can have confidence that its path forward, if carried out consistent with what it has told the staff, will not result in another round of RAIs 2

S U.S.N C UNITED STATES NUCLEAR REGULATORY COMMISSION ProtectingPeople and the Environment Precepts for the discussion Emphasis for the meeting is licensee's methods in each subject area; results may be discussed as appropriate to support conclusions on method adequacy

  • Licensee bears the burden of showing that its strainer will function adequately in event of a DBA
  • NRC position is that. an adequate head loss test is needed to show satisfactory strainer performance unless licensee justifies that their strainer has significant nonfiltering area
  • Perfection is not the standard, but staff has not been able to reach conclusions of adequacy in the face of numerous evident nonconservatisms 3

protectingPeople and the Environment(C ontinued)

No particular degree of conservatism required in any subject area; staff will not claim treatment of an area is "not sufficiently conservative" Staff will not carry concerns such as "may be nonconservative" without specific basis 4

ProteCtingPeople and the Environment Approach t Meeting For each RAI under discussion as determined during agenda-setting telecon:

- Licensee discusses path forward

- Staff asks questions/states any concerns

- Open discussion between the two parties

- Each side concludes with its position

- PM notes positions and agreements (as applicable)

  • After all RAIs discussed,both parties caucus privately on any RAIs for which agreement was not reached
  • Final discussion

- Either party may identify a change in its position(s)

- Staff will provide overall conclusion regarding its confidence in

.licensee's approach to issue resolution

  • Public comment opportunity
  • Results and agreements/disagreements documented in meeting summary 5
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