A Multi-Methods Approach to HRA and Human Performance Modeling: A Field Assessment
The Advanced Test Reactor (ATR) is a research reactor at the Idaho National Laboratory is primarily designed and used to test materials to be used in other, larger-scale and prototype reactors. The reactor offers various specialized systems and allows certain experiments to be run at their own temperature and pressure. The ATR Canal temporarily stores completed experiments and used fuel. It also has facilities to conduct underwater operations such as experiment examination or removal. In reviewing the ATR safety basis, a number of concerns were identified involving the ATR canal. A brief study identified ergonomic issues involving the manual handling of fuel elements in the canal that may increase the probability of human error and possible unwanted acute physical outcomes to the operator. In response to this concern, that refined the previous HRA scoping analysis by determining the probability of the inadvertent exposure of a fuel element to the air during fuel movement and inspection was conducted. The HRA analysis employed the SPAR-H method and was supplemented by information gained from a detailed analysis of the fuel inspection and transfer tasks. This latter analysis included ergonomics, work cycles, task duration, and workload imposed by tool and workplace characteristics, personal protective clothing, and operational practices that have the potential to increase physical and mental workload. Part of this analysis consisted of NASA-TLX analyses, combined with operational sequence analysis, computational human performance analysis (CHPA), and 3D graphical modeling to determine task failures and precursors to such failures that have safety implications. Experience in applying multiple analysis techniques in support of HRA methods is discussed.
- Research Organization:
- Idaho National Lab. (INL), Idaho Falls, ID (United States)
- Sponsoring Organization:
- DOE - NE
- DOE Contract Number:
- DE-AC07-05ID14517
- OSTI ID:
- 1047188
- Report Number(s):
- INL/CON-11-22850; TRN: US1203871
- Resource Relation:
- Conference: PSAM11 ESREL 2012,Helsinki, FInland,06/25/2012,06/29/2012
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
FUEL ELEMENTS
HUMAN FACTORS ENGINEERING
IDAHO NATIONAL LABORATORY
PERFORMANCE
PROBABILITY
PROTECTIVE CLOTHING
REMOVAL
RESEARCH REACTORS
SAFETY
SIMULATION
STRUCTURAL CHEMICAL ANALYSIS
TEST REACTORS
UNDERWATER OPERATIONS
Advanced Test Reactor
computational performance modeling
human reliability analysis
multi methods approach