ML12275A132

Request for Additional Information, License Amendment Request to Revise Technical Specifications (TS) 3.3, Instrumentation, 3.7, Plant Systems, and 3.8, Electrical Power Systems

ML12275A132
Person / Time
Site:	Wolf Creek
Issue date:	10/01/2012
From:	Brian Benney Plant Licensing Branch IV
To:	Wideman S Wolf Creek
Benney B
References
TAC ME5742
Download: ML12275A132 (2)

Text

From:Benney, Brian To:Wideman Steve G Cc:Burkhardt, Janet; Chen, Qiao-Lynn

Subject:

ME5742 RAIs Date:Monday, October 01, 2012 7:17:58 AM

Dear Mr. Wideman:

By letter dated February 23,2011, (Agencywide Documents Access and ManagementSystem Accession No. ML110620288), the Wolf Creek Nuclear Operating Corporation submitted a license amendment request for the Wolf Creek Generating Station. Theproposed amendment would delete Required Action D.1.2 from WCGS TS 3.7.10 andRequired Action C.1.2 from WCGS TS 3.7.11

. The U.S. Nuclear Regulatory Commission (NRC) staff has reviewed the informationprovided by the licensee and determined that the additional information identified in the attachment is needed in order for the NRC staff to complete its review.

The staff isrequesting a written response to the RAls no later than October 25, 2012.

Please contact me if you would like to have a clarifying conference call.

Thank you, Brian Benney DRAFT REQUEST FOR ADDITIONAL INFORMATIONLICENSE AMENDMENT REQUESTREVISION IS PROPOSED TO DELETE REQUIRED ACTION D.1.2 FROM WCGS TS 3.7.10AND REQUIRED ACTION C.1.2 FROM WCGS TS 3.7.11WOLF CREEK NUCLEAR OPERATING CORPORATIONWOLF CREEK GENERATING STATIONDOCKET NUMBER 50-482

1. By application dated, February 23, 2011, a TS revision is proposed to deleteRequired Action D.1.2 from WCGS TS 3.7.10 and Required Action C.1.2 fromWCGS TS 3.7.11.

Each of these are the "Required Action " that may be enteredwhen one CREVS/CRACS train is inoperable for a period longer than 7 days, asspecified in Condition A of each applicable TS and requires verifying that theOPERABLE train is capable of being powered by an emergency power source.

It isthe NRC staff's understanding that this action assures OPERABILITY of theCREVS/CRACS train in the event of a fuel handling accident (FHA) or waste gasdecay tank rupture accident while shutdown concurrent with a loss of offsite power (LOOP).

Please provide additional information in regards to the revision of TS 3.7.10/11 such that the CREVS/CRACS train is no longer supported by an emergency power source. Include in your response the following information:

a. Documentation describing whether or not the current WCGS FHA analysisassumes a LOOP to occur concurrent with a FHA.

Also state if theCREVS/CRACS are credited in the current FHA analysis.

b. If a concurrent LOOP is assumed and/or the CREVS/CRACS is credited inthe current WCGS FHA analysis, provide a description of the revised FHAradiological dose analysis removing these assumptions.

Also, provide theresulting exclusion area boundary, low population zone, and control roomdose values.