A THERPATHEANA Analysis of the Latent Operator Error in Leaving EFW Valves Closed in the TMI-2 Accident

Joint Authors

Alvim, Antonio Carlos Marques
Alvarenga, Marco Antonio B.
Fonseca, Renato A.
Frutuoso e Melo, Paulo Fernando F.

Source

Science and Technology of Nuclear Installations

Issue

Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-8, 8 p.

Publisher

Hindawi Publishing Corporation

Publication Date

2013-03-31

Country of Publication

Egypt

No. of Pages

8

Main Subjects

Engineering Sciences and Information Technology

Abstract EN

This paper aims at performing a human reliability analysis using THERP (Technique for Human Error Prediction) and ATHEANA (Technique for Human Error Analysis) to develop a qualitative and quantitative analysis of the latent operator error in leaving EFW (emergency feed-water) valves closed in the TMI-2 accident.

The accident analysis has revealed a series of unsafe actions that resulted in permanent loss of the unit.

The integration between THERP and ATHEANA is developed in a way such as to allow a better understanding of the influence of operational context on human errors.

This integration provides also, as a result, an intermediate method with the following features: (1) it allows the analysis of the action arising from the plant operational context upon the operator (as in ATHEANA), (2) it determines, as a consequence from the prior analysis, the aspects that most influence the context, and (3) it allows the change of these aspects into factors that adjust human error probabilities (as in THERP).

This integration provides a more realistic and comprehensive modeling of accident sequences by considering preaccidental and postaccidental contexts, which, in turn, can contribute to more realistic PSA (Probabilistic Safety Assessment) evaluations and decision making.

American Psychological Association (APA)

Fonseca, Renato A.& Alvim, Antonio Carlos Marques& Frutuoso e Melo, Paulo Fernando F.& Alvarenga, Marco Antonio B.. 2013. A THERPATHEANA Analysis of the Latent Operator Error in Leaving EFW Valves Closed in the TMI-2 Accident. Science and Technology of Nuclear Installations،Vol. 2013, no. 2013, pp.1-8.
https://search.emarefa.net/detail/BIM-498079

Modern Language Association (MLA)

Fonseca, Renato A.…[et al.]. A THERPATHEANA Analysis of the Latent Operator Error in Leaving EFW Valves Closed in the TMI-2 Accident. Science and Technology of Nuclear Installations No. 2013 (2013), pp.1-8.
https://search.emarefa.net/detail/BIM-498079

American Medical Association (AMA)

Fonseca, Renato A.& Alvim, Antonio Carlos Marques& Frutuoso e Melo, Paulo Fernando F.& Alvarenga, Marco Antonio B.. A THERPATHEANA Analysis of the Latent Operator Error in Leaving EFW Valves Closed in the TMI-2 Accident. Science and Technology of Nuclear Installations. 2013. Vol. 2013, no. 2013, pp.1-8.
https://search.emarefa.net/detail/BIM-498079

Data Type

Journal Articles

Language

English

Notes

Includes bibliographical references

Record ID

BIM-498079