ML14078A337

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NRR E-mail Capture - Fort Calhoun Seismic Walkdown Requst for Additional Information (MF0126)
ML14078A337
Person / Time
Site: Fort Calhoun Omaha Public Power District icon.png
Issue date: 03/19/2014
From: Joseph Sebrosky
Division of Operating Reactor Licensing
To: Hansher B
Omaha Public Power District
References
MF0126
Download: ML14078A337 (2)


Text

NRR-PMDAPEm Resource From: Sebrosky, Joseph Sent: Wednesday, March 19, 2014 11:06 AM To: bhansher@oppd.com Cc: medwards@oppd.com; Vega, Frankie; Jackson, Diane; Jardaneh, Mahmoud; DiFrancesco, Nicholas

Subject:

Fort Calhoun Seismic Walkdown Requst for Additional Information (MF0126)

Mr. Hanshar, By letter dated November 27, 2012, (Agencywide Documents Access and Management System (ADAMS)

Accession No ML12340A257) as supplemented by letters dated June 28, 2013, and November 27, 2013 (ADAMS Accession Nos. ML13193A236 and ML13333A674, respectively) Omaha Public Power District, (the licensee) submitted seismic walkdown information in response to the NRCs March 12, 2012, request for information (ADAMS Accession No. ML12053A340). The March 12, 2012, NRC letter requested licensees to conduct seismic hazard walkdowns to verify current plant configuration with the current licensing basis.

Based on a review of your November 27, 2012, June 28, 2013, and November 27, 2013, submittals, the NRC staff has determined that the following additional information (RAI) is required in order to complete its review.

The request for additional information was discussed with Mr. Michael Edwards (OPPD Nuclear Licensing Engineer) on March 18, 2013. It was agreed that a response to these RAIs would be provided by March 28, 2013. Should the NRC determine that this RAI is no longer necessary prior to the scheduled date, the request will be withdrawn. If circumstances result in the need to revise the requested response date, please contact me at (301) 415-1132 or via e-mail at joseph.sebrosky@nrc.gov. The NRC staff has determined that no security-related or proprietary information is contained herein.

Request for Additional Information

1. The staff does not have enough information to verify that there are no items that could lead to rapid drain-down of the Fort Calhoun Station spent fuel pool (SFP) or, if there are drain-down items, that they were sufficiently assessed in accordance with the guidance. The rapid drain-down discussion does not reach a clear conclusion with respect to equipment that could cause a rapid drain down. In particular, the seismic walkdown report does not include a discussion on the evaluation of penetrations within 10 feet above the top of the fuel assemblies. Also, the report does not include a Rapid Drain-Down list as described in the seismic walkdown guidance (page 8-3). It is unclear whether the SFP items that cause rapid drain-down were included as part of the combined seismic walkdown equipment list (SWEL).
2. The staff is unable to confirm that the cabinets were opened and inspected. The submittal report, including the seismic walkdown checklists, did not provide any information to confirm that cabinets were opened to view internal lateral anchorages to adjacent cabinets, any internal floor anchorage, and to determine the condition of any internal equipment.
3. The staff cannot verify that any individual involved in performing a given walkdown activity was not a peer reviewer for that same activity. Table 1, Personnel Functions, of the updated seismic walkdown report lists two individuals to have participated in seismic walkdown and peer review activities (one is the peer review team lead). Neither the response to the November 1, 2013 RAI-2b, nor the seismic walkdown report address whether these two individuals reviewed their own work or sufficiently explain how this did not contradict the objective of the peer review efforts.

1

Hearing Identifier: NRR_PMDA Email Number: 1173 Mail Envelope Properties (36CF286628C20846A68047F246323309FFAC689344)

Subject:

Fort Calhoun Seismic Walkdown Requst for Additional Information (MF0126)

Sent Date: 3/19/2014 11:06:07 AM Received Date: 3/19/2014 11:06:00 AM From: Sebrosky, Joseph Created By: Joseph.Sebrosky@nrc.gov Recipients:

"medwards@oppd.com" <medwards@oppd.com>

Tracking Status: None "Vega, Frankie" <Frankie.Vega@nrc.gov>

Tracking Status: None "Jackson, Diane" <Diane.Jackson@nrc.gov>

Tracking Status: None "Jardaneh, Mahmoud" <Mahmoud.Jardaneh@nrc.gov>

Tracking Status: None "DiFrancesco, Nicholas" <Nicholas.DiFrancesco@nrc.gov>

Tracking Status: None "bhansher@oppd.com" <bhansher@oppd.com>

Tracking Status: None Post Office: HQCLSTR02.nrc.gov Files Size Date & Time MESSAGE 3277 3/19/2014 11:06:00 AM Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date:

Recipients Received: