ML14141A540

Indian Point, Unit 2 - 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 Acciden

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

Text

'~EnteigyEnterav Nuclear NortheastIndian Point Energy Center450 Broadway, GSB3P.O. Box 249Buchanan, NY 10511-0249Tel 914 254 6700John A VentosaSite Vice PresidentN L- 14-064May 9, 2014U.S. Nuclear Regulatory CommissionATTN: Document Control Desk11545 Rockville Pike, TWFN-2F1Rockville, MD 20852-2738

REFERENCE:

Entergy's Supplemental Response to NRC Request for Information Pursuant to10 CFR 50.54(f) Regarding the Flooding Aspects of Recommendations 2.3 of theNear-Term Task Force Review of Insights from the Fukushima Dai-ichi AccidentIndian Point Unit Number 2Docket Nos. 50-247License No. DPR-261. NRC letter to Entergy, Request for Information Pursuant to Title 10of the Code of Federal Regulations 50.54(0 RegardingRecommendations 2.1, 2.3, and 9.3 of the Near-Term Task ForceReview of Insights from the Fukushima Dai-lchi Accident, datedMarch 12, 2012.2. Entergy Unit 2 Letter to NRC (NL-12-169), Flooding WalkdownReport -Entergy's Response to NRC Request for InformationPursuant to 10 CFR 50.54(f) Regarding the Flooding Aspects ofRecommendation 2.3 of the Near-Term Task Force Review ofInsights 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 ofconstruction permits in active or deferred status. Enclosure 4 of Reference 1 requested that eachlicensee perform flood protection walkdowns and report the results within 180 days of NRCendorsement 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 floodprotection features. Walkdowns of the restricted access items have been completed and this letterprovides the results. This submittal closes the open items in Reference 2.A010kiLL1 NL-14-064Docket No. 50-247Page 2 of 2The 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 ofthe 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 foreach 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 thisconfirmation 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 Itemscc: Mr. Douglas Pickett, Senior Project Manager, NRC NRR DORLMr. William M. Dean, Regional Administrator, NRC Region 1NRC Resident InspectorsMr. John B. Rhodes, President and CEO, NYSERDAMs. Bridget Frymire, New York State Dept. of Public Service ATTACHMENT TO NL-14-064FLOODING WALKDOWN REPORT OPEN ITEMSENTERGY NUCLEAR OPERATIONS, INC.INDIAN POINT NUCLEAR GENERATING UNIT NO. 2DOCKET NO. 50-247 NL-14-064Docket No. 50-247AttachmentPage 1 of 1TableFlooding Walkdown Report Open ItemsDescription of FeatureDeficienciesIdentified(yes / no)Deficiency DescriptionActions Taken or PlannedInaccessible (yes /no) DescriptionCabinet WJ6 on the North No None None NoWall of the 480V Switchgearroom of the Control BuildingRoof and associated drains No None None Noon Primary Auxiliary BuildingRoof and associated drains No None None Noon the Auxiliary FeedwaterBuildingRoof and associated drains No None None Noon the Turbine BuildingRoof and associated drains No None None Noon the Control BuildingElectrical Manhole #24 in Yes Conduits are not sealed in the Design Basis flood level is NoTransformer Yard manhole. Entered in CAP. below conduit elevations.Plan to raise manholeapproximately 18" abovegrade to prevent water dueto potential ponding fromentering manhole fromreevaluated flood hazardanalysis.Six Service Water Pump Yes The conduits have not been Design Basis flood level is Yes (switchgear isConduits that inspected in manhole 23 and are below the switchgear bus over conduit andPenetrate the Floor of the assumed to be not sealed. bars. Plan to seal conduits would have to be480V Switchgear Entered in CAP. in Manhole 23 based on the removed for access)Room underneath the re-evaluated flood hazard -Switchgear analysis and add tomonitoring program.