June 18-20, 2024
17 Goodyear, Irvine, CA

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Nuclear Utility User Group Banner 2024

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ETAP users in the nuclear industry may request becoming a member below

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The ETAP Nuclear Utility Users Group has been established to create a discussion platform between ETAP and their clients using ETAP solutions, to support activities for nuclear power generating stations. The ETAP NUUG consists of members representing the common goals and needs of the nuclear power industry. Membership is open to all licensed ETAP Nuclear Users and other licensed ETAP Users associated in nuclear activities.

Request to Become a Member.

Download the NUUG Charter

NUUG Goals

The purpose of the ETAP NUUG is to provide a discussion platform for its members to share
and discuss items related to ETAP and the nuclear power industry.


Evaluate and review recent revisions to the software


Allow and encourage the exchange of member experiences and ideas for the use of the program


Collaborate on recommendations for future enhancements to the software


Address errors or deficiencies in the software from user evaluation.


Provide consolidated & prioritized feedback to ETAP® in relation to practical operating experience from the nuclear power industry


Share techniques and philosophies used in analyzing the auxiliary systems of nuclear power plants

ETAP NUUG Executive Committee



Jeff Weibelt

Southern Nuclear
Operating Company

(205) 992-7649


Technical Chairman

Preston Cooper

TVA Nuclear

(423) 751-7697

David Dearing

Associate Chair / Secretary

David Dearing

Energy Northwest

(509) 377-8611

etap big daddy award

The Big Daddy Award

The “Big Daddy” Award is presented to a member who has actively contributed for many years to the ETAP NUUC.

The award recognizes the recipient’s long term contribution to the nuclear power industry by partnering with ETAP.

View Big Daddy Award winners

Past ETAP NUUC Events

The Case for Online Monitoring Using ETAP Real-Time™ in a Nuclear Power Plant

19:41 Webinars  
At a given nuclear power plant, nuclear safety is directly dependent on a reliable source of electric power supplied via the plant’s auxiliary power system. The auxiliary power system typically consists of an MV and LV AC and a DC distribution system, powering thousands of individual loads and circuits. The presentation explores past practices and recent developments in the online monitoring of such systems using a digital twin. It includes the reasons for utilizing online monitoring, the advantages and benefits, i.e., business, safety, reliability.

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