ML14141A540

Supplemental Response to NRC Request for Information Pursuant to 10 CFR 50.54(f) Regarding the Flooding Aspects of Recommendations 2.3 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident

ML14141A540
Person / Time
Site:	Indian Point
Issue date:	05/09/2014
From:	Ventosa J Entergy Nuclear Northeast
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
N L- 14-064
Download: ML14141A540 (4)

Text

Enterav Nuclear Northeast Indian Point Energy Center 450 Broadway, GSB3 P.O. Box 249

'~Enteigy Buchanan, NY 10511-0249 Tel 914 254 6700 John A Ventosa Site Vice President NL-14-064 May 9, 2014 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk 11545 Rockville Pike, TWFN-2F1 Rockville, MD 20852-2738

SUBJECT:

Entergy's Supplemental Response to NRC Request for Information Pursuant to 10 CFR 50.54(f) Regarding the Flooding Aspects of Recommendations 2.3 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident Indian Point Unit Number 2 Docket Nos. 50-247 License No. DPR-26

REFERENCE:

1. NRC letter to Entergy, Request for Information Pursuantto Title 10 of the Code of FederalRegulations 50.54(0 Regarding Recommendations 2.1, 2.3, and 9.3 of the Near-Term Task Force Review of Insights from the Fukushima Dai-lchiAccident, dated March 12, 2012.

2. Entergy Unit 2 Letter to NRC (NL-12-169), Flooding Walkdown Report - Entergy's Response to NRC Request for Information Pursuant to 10 CFR 50.54(f) Regarding the Flooding Aspects of Recommendation 2.3 of the Near-Term Task Force Review of Insights from the Fukushima Dai-lchi Accident, dated November 27, 2014.

Dear Sir or Madam:

On March 12, 2012, the NRC issued Reference 1 to all power reactor licensees and holders of construction permits in active or deferred status. Enclosure 4 of Reference 1 requested that each licensee perform flood protection walkdowns and report the results within 180 days of NRC endorsement of the flooding walkdown procedure (NEI 12-07). Entergy Nuclear Operations, Inc.

(Entergy) completed the flood protection walkdowns at IPEC and submitted the results in Reference 2.

Reference 2 contained open items where restricted access prevented walkdown of certain flood protection features. Walkdowns of the restricted access items have been completed and this letter provides the results. This submittal closes the open items in Reference 2.

A010 kiLL1

NL-14-064 Docket No. 50-247 Page 2 of 2 The attached table provides a list of the restricted access items inspected, their respective disposition, and any action planned or taken. As a result of the inspections:

• There were two deficiencies found. Both were entered into the Plant's CAP to correct as part of the re-evaluated flood level.

• No temporary measures were required as a result of the completed inspections.

• Available Physical Margins were collected and documented in the walkdown record forms for each applicable item inspected in accordance with NEI 12-07.

• One of the restricted access items was reclassified as inaccessible.

There are no new commitments contained in this submittal. If you have any questions regarding this confirmation of receipt, please contact Mr. Robert Walpole, Manager, Regulatory Affairs at (914) 254-6710.

I declare under penalty of perjury that the foregoing is true and correct. Executed on May(, 2014.

Respectfully, JAV/sp

Attachment:

Flooding Walkdown Report Open Items cc: Mr. Douglas Pickett, Senior Project Manager, NRC NRR DORL Mr. William M. Dean, Regional Administrator, NRC Region 1 NRC Resident Inspectors Mr. John B. Rhodes, President and CEO, NYSERDA Ms. Bridget Frymire, New York State Dept. of Public Service

ATTACHMENT TO NL-14-064 FLOODING WALKDOWN REPORT OPEN ITEMS ENTERGY NUCLEAR OPERATIONS, INC.

INDIAN POINT NUCLEAR GENERATING UNIT NO. 2 DOCKET NO. 50-247

NL-14-064 Docket No. 50-247 Attachment Page 1 of 1 Table Flooding Walkdown Report Open Items Description of Feature Deficiencies Deficiency Description Actions Taken or Planned Inaccessible (yes /

Identified no) Description (yes / no)

Cabinet WJ6 on the North No None None No Wall of the 480V Switchgear room of the Control Building Roof and associated drains No None None No on Primary Auxiliary Building Roof and associated drains No None None No on the Auxiliary Feedwater Building Roof and associated drains No None None No on the Turbine Building Roof and associated drains No None None No on the Control Building Electrical Manhole #24 in Yes Conduits are not sealed in the Design Basis flood level is No Transformer Yard manhole. Entered in CAP. below conduit elevations.

Plan to raise manhole approximately 18" above grade to prevent water due to potential ponding from entering manhole from reevaluated flood hazard analysis.

Six Service Water Pump Yes The conduits have not been Design Basis flood level is Yes (switchgear is Conduits that inspected in manhole 23 and are below the switchgear bus over conduit and Penetrate the Floor of the assumed to be not sealed. bars. Plan to seal conduits would have to be 480V Switchgear Entered in CAP. in Manhole 23 based on the removed for access)

Room underneath the re-evaluated flood hazard -

Switchgear analysis and add to monitoring program.