ML081630565

Response to NRC Follow-Up Inspection 05000255/2008008 (DRS)

ML081630565
Person / Time
Site:	Palisades
Issue date:	06/10/2008
From:	Lahti L Entergy Nuclear Operations
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
IR-08-008
Download: ML081630565 (2)

Text

Entergy Nuclear Operations, Inc. Palisades Nuclear Plant 27780 Blue Star Memorial Highway Covert, MI 49043 Tel269 764 2000 June 10,2008 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Palisades Nuclear Plant Docket 50-255 License No. DPR-20 Response to NRC Follow-Up Inspection 05000255/2008008(DRS~

Dear Sir or Madam:

By letter dated May 19, 2008, the Nuclear Regulatory Commission (NRC) issued the NRC follow-up lnspection Report 05000255/2008008(DRS). This report documented the actions taken to review an unresolved item from the 2006 component design basis inspection at the Palisades Nuclear Plant (PNP).

This unresolved item involved a concern with respect to the fast transfer scheme from the safeguards transformer to the startup transformer.

As documented in this letter, the NRC determined after further review that a modification is necessary to bring the fast transfer scheme into compliance with its description in the final safety analysis report (FSAR) Section 8.6.2. The letter requested a response within 30 calendar days with a description of the intended actions to be taken by Entergy Nuclear Operations, Inc (ENO) to address the noncompliance, including a proposed schedule to complete the actions. Preliminary reviews indicate that any modification of the fast transfer scheme must occur during plant shutdown conditions due to the need to perform post modification testing. The next scheduled plant shutdowns are the refueling outages in 2009 and in 201 0. EN0 had identified a potential modification that could be installed during the 2009 outage, but analytical work associated with the modification recently revealed that the modification would not have completely restored the fast transfer and brought it into compliance with the FSAR. As a result, it was necessary to consider other options.

Due to the extensive analytical work required to support another option and the inherent uncertainty of the analytical results for any of the options available, EN0 is not confident that a modification can be developed for the 2009 outage.

Therefore, EN0 intends to develop a modification to restore the fast transfer scheme during the 2010 refueling outage. Until then, PNP will continue to operate with the fast transfer disabled by a temporary modification.

Document Control Desk Page 2 Summarv of Commitments PNP will implement a modification to bring the fast transfer into compliance with the FSAR during the 201 0 refueling outage.

Laurie A. Lahti Licensing Manager Palisades Nuclear Plant CC Administrator, Region Ill, USNRC Project Manager, Palisades, USNRC Resident Inspector, Palisades, USNRC Office of Enforcement, USNRC