ATHEANA User's Guide (NUREG-1880)
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Publication Information
Manuscript Completed: May 2007
 Date Published: June 2007
Prepared by:
 John Forester, Sandia National Laboratories
 Alan Kolaczkowski, Science Applications International Corporation
 Susan Cooper, U.S. Nuclear Regulatory Commission
 Dennis Bley, Buttonwood Consulting, Inc.
 Erasmia Lois, U.S. Nuclear Regulatory Commission
Sandia National Laboratories
 P.O. Box 5800
 Albuquerque, NM 87185
Science Applications International Corporation
 405 Urban Street, Suite 400
 Lakewood, Co 80220
Erasmia Lois, NRC Project Manager
Prepared for:
 Division of Risk Assessment and Special Projects
 Office of Nuclear Regulatory Research 
 U.S. Nuclear Regulatory Commission
 Washington, DC 20555-0001
Abstract
This manuscript provides a user's guide for the human reliability analysis (HRA) method known as "A Technique for Human Event Analysis" (ATHEANA), which the U.S. Nuclear Regulatory Commission (NRC) documented in NUREG-1624, Rev. 1, dated May 2000. As the first publication of its kind, this user's guide describes both the quantitative and qualitative ATHEANA analysis approaches, fully describing the revised quantification approach and presenting a simpler description of the other ATHEANA elements needed to perform an HRA as part of a probabilistic risk assessment (PRA). Toward that end, this user's guide strives to present the steps for applying ATHEANA in a straightforward and succinct manner, so that HRA experts can easily and effectively apply the technique. Consequently, although the authors relied on NUREG-1624 as a primary resource for its development, the NRC is publishing this user's guide as a standalone document, such that it can be used by analysts to apply the ATHEANA technique without the need to use NUREG-1624.
Page Last Reviewed/Updated Tuesday, March 09, 2021
Page Last Reviewed/Updated Tuesday, March 09, 2021