ML12191A187

LRA RAI Telecon 2012-04-13

ML12191A187
Person / Time
Site:	Grand Gulf
Issue date:	07/31/2012
From:	Ferrer N License Renewal Projects Branch 1
To:	Entergy Operations
Ferrer N
References
TAC ME7493
Download: ML12191A187 (6)

Text

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• • • • i' LICENSEE: Entergy Operations, Inc.

FACILITY: Grand Gulf Nuclear Station SUB~IECT:

SUMMARY

OF TELEPHONE CONFERENCE CALL HELD ON APRIL 13,2012, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION AND ENTERGY OPERATIONS, INC., CONCERNING REQUESTS FOR ADDITIONAL INFORMATION PERTAINING TO THE GRAND GULF NUCLEAR STATION, LICENSE RENEWAL APPLICATION (TAC. NO. ME7493)

The U.S. Nuclear Regulatory Commission (NRC or the staff) and representatives of Entergy Operations, Inc., (Entergy) held a telephone conference call on April 13, 2012, to discuss and clarify the staff's requests for additional information (RAls) concerning the Grand Gulf Nuclear Station, license renewal application. The telephone conference call was useful in clarifying the intent of the staff's RAls.

Enclosure 1 provides a listing of the participants and Enclosure 2 contains a listing of the RAls discussed with the applicant, including a brief description on the status of the items.

The applicant had an opportunity to comment on this summary.

Nathaniel Ferrer, Project Manager Projects Branch 1 Division of License Renewal Office of Nuclear Reactor Regulation Docket No. 50-416

Enclosures:

As stated cc w/encls: Listserv

TELEPHONE CONFERENCE CALL GRAND GULF NUCLEAR STATION LICENSE RENEWAL APPLICATION LIST OF PARTICIPANTS April 13, 2012 PARTICIPANTS AFFILIATIONS Nate Ferrer NRC Rui Li NRC Duc Nguyen NRC Jeff Seiter Entergy Ted Ivy Entergy Roger Rucker Entergy ENCLOSURE 1

REOUESTS FOR ADDITIONAL INFORMATION (SET 10)

LICENSE RENEWAL APPLICATION April 13, 2012 The U.S. Nuclear Regulatory Commission (NRC or the staff) and representatives of Entergy Operations, Inc., held a telephone conference call on April 13, 2012, to discuss and clarify the following requests for additional information (RAls) concerning the license renewal application (LRA).

Draft RAI 8.1.28-1 Background. Grand Gulf LRA Section B.1.2S states that this aging management program (AMP) is consistent with the Generic Aging Lesson Learned (GALL) Report AMP XI.E6. The GALL Report "parameters monitored or inspected" program element recommends that the following factors are considered for sampling:

• voltage level (medium and low voltage)

• circuit loading (high load)

• connection type

• location (high temperature, high humidity, vibration, etc.)

Most connections used in nuclear power plants include splices (butt or bolted), crimp-type ring lugs, connectors, and terminal blocks. The program basis document GGNS-EP-OS-LRDOS, Revision 1, states that the representative sample of electrical cable connections will be tested, and the factors considered for sample selection will be application (medium and low voltage),

circuit loading (high voltage), and location (high temperature, high humidity, vibration, etc.).

Issue. The "parameters monitored or inspected" program element of the applicant's basis document GGNS-EP-OS-LRDOS, Revision 1, does not consider or address connection types in the sample selection criteria.

Request. Clarify how the Non-EO Insulated Cables and Connections Program is consistent with GALL Report AMP XI.E6 with respect to sample selection criteria including connection type.

Discussion: The applicant indicated that the question is clear. The staff will issue the question as a formal RAI.

Draft RAI 8.1.31-1 Background. LRA Section B.1.31 states that Non-EO Insulated Cables and Connections Program will be consistent with GALL Report AMP XI.E1. GALL Report, item VI.A.LP-33 states that one of the applicable aging effects is reduced insulation resistance due to photolysis (UV) of organic polymers (cable jacket). The GALL Report AMP XI.E1 "scope of program" program element states this program applies to accessible electrical cables and connections within the scope of license renewal that are located in adverse localized environments caused by temperature, radiation, or moisture. During the onsite walkdown, the staff identified cables from ESF transformer Nos. 11, 12, and 21, which sit on support trays.

ENCLOSURE 2

-2 Issue. These ESF transformer cable trays do not use covers, leaving cables exposed to open air environment, which will subject cables to moisture and ultra violet radiation. It is not clear how the Non-EQ Insulated Cables and Connections Program will be used to manage the aging effects of reduced insulation resistance in this open-air environment.

Request. Explain how these ESF transformer cables will be managed for aging, during the period of extended operation.

Discussion: The applicant indicated that the question is clear The staff will issue the question as a formal RAJ.

... ML12191A187 OFFICE LA:RPB1 :DLR PM:RPB1 :DLR BC:RPB1 :DLR PM:RPB1 :DLR NAME YEdmonds NFerrer o Morey NFerrer DATE 07/19/12 07/27/12 07/31/12 07/31/12 Memorandum to Grand Gulf Nuclear Station from N. Ferrer dated, July 31,2012

SUBJECT:

Summary of Telephone Conference Call conducted on April 13, 2012 DISTRIBUTION:

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