ML14157A241

NRR E-mail Capture - Joseph M. Farley, Unit 1 and Unit 2, Regarding the Licensees Updated Schedule to Respond to NRCs NFPA-805 Request for Additional Information

ML14157A241
Person / Time
Site:	Farley, Trojan  File:Portland General Electric icon.png
Issue date:	06/04/2014
From:	Branum J Southern Nuclear Operating Co
To:	Shawn Williams Plant Licensing Branch II
References
Download: ML14157A241 (2)

Text

NRR-PMDAPEm Resource From: Branum, Jeff K. [JKBRANUM@southernco.com]

Sent: Wednesday, June 04, 2014 3:45 PM To: Williams, Shawn; Miller, Barry

Subject:

Detailed Activities Follow Up Flag: Follow up Flag Status: Flagged Shawn, Barry, The results of the composite effects of the revisions to the Farley Fire PRA model are significant. Additional refinements are necessary. Additional modifications to plant may be necessary for Unit 2 to lower the risk numbers.

The detailed activities that are now required due to the revisions to the Fire PRA model are listed below. The main activities are the refinements to the models and the resulting revisions to the Fire Risk Evaluations (FREs). The results of the Fire PRA model composite effects will be provided by July 3 2014. Currently revisions to 159 FREs will be necessary and will require until August 29, 2014 to complete. This is an aggressive schedule and SNC is pursuing improvements, if possible. The main activities necessary are:

• Fire PRA model updates and refinements

• Fire PRA documentation

• Scenario report

• Summary report

• HRA report

• Revision to LAR Attachments S,V, and ire Risk Evaluation automation

• FRE conversion to FSA

• Data integrity checks

• Fire Risk Evaluation drafts

• Reviews and comment incorporation

• Revisions to LAR Attachments C and G (note Attachment C is over 2000 pages)

As shown above, the revisions to downstream documentation necessitated by the revisions to the Fire PRA model are extensive and necessary.

If you need any additional information on the schedule change, please let me know.

1

Hearing Identifier: NRR_PMDA Email Number: 1343 Mail Envelope Properties (73ADBEE6BC0EC34D852AEB1AEB8DA1E908C5C9)

Subject:

Detailed Activities Sent Date: 6/4/2014 3:45:10 PM Received Date: 6/4/2014 3:46:00 PM From: Branum, Jeff K.

Created By: JKBRANUM@southernco.com Recipients:

"Williams, Shawn" <Shawn.Williams@nrc.gov>

Tracking Status: None "Miller, Barry" <Barry.Miller@nrc.gov>

Tracking Status: None Post Office: ALXAPEX42.southernco.com Files Size Date & Time MESSAGE 1508 6/4/2014 3:46:00 PM Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date:

Recipients Received: Follow up