Operator response modeling and human error probability in TRIGA Mark II research reactor probabilistic safety assessment

Hassan, Ahmad; Maskin, Mazleha; Tom, Phongsakorn Prak; Brayon, F. C.; Hlavac, P; Mohamed, Faizal K.P. Kunchi

doi:10.1016/j.anucene.2016.12.024

Cited by 8 publications

(2 citation statements)

References 9 publications

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“…As a final safety measure, the operator should manually shut down the pump and initiate the TRIGA IPR-RI Reactor Local Emergency Plan immediately. Marques (2018) [13] predicted the human error probability regarding "operator does not initiate the shutdown" using the Standardized Plant Risk-Human Reliability Analysis (SPAR-H) method and concluded an acceptable error rate for the TRIGA IPR-RI reactor of 2.5 × 10 -², which is a value comparable to other similar TRIGA facilities [22,23]. Even in scenarios where prior safety measures fail, the likelihood of preventing a LOCA event by the group of operators renders this accident not constituting an unacceptable risk concerning the safety management of the facility.…”

Section: Loss Of Coolant Through Primary Circuit Rupture Without a Pu...mentioning

confidence: 99%

Application of FMEA and FTA techniques for assessing the occurrence of LOCA in a TRIGA MARK I Reactor

Carvalho,

Barros,

Vasconcelos

et al. 2024

Braz. J. Rad. Sci.

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This study presents a framework merging failure mode and effect analysis (FMEA) and fault tree analysis (FTA) techniques to evaluate loss of coolant accident (LOCA) in the Brazilian Reactor TRIGA IPR-RI. At first, FMEA identified failure modes and prioritized risk management based on the risk priority number (RPN). Subsequently, FTA established logical relationships between these failure modes, revealing minimal cut sets. Results indicated that the path involving “loss of coolant from reactor tank” correlate to an externally caused leak, exhibiting a low probability and, consequently, a low RPN. On the other hand, the path involving “loss of coolant through primary circuit rupture without a pump shutdown” highlighted high RPN due to the lack of shutdown signals from the monitoring indicators. Finally, FTA unveiled that LOCA associates with a primary circuit rupture and the simultaneous failure of safety mechanisms, including ultimately human error.

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Section: Loss Of Coolant Through Primary Circuit Rupture Without a Pu...mentioning

confidence: 99%

Application of FMEA and FTA techniques for assessing the occurrence of LOCA in a TRIGA MARK I Reactor

Carvalho,

Barros,

Vasconcelos

et al. 2024

Braz. J. Rad. Sci.

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“…It is worth noting that largescale aerospace composite parts often have thousands of holes that need to be riveted [7]. Manual riveting consumes a lot of manpower, is inefficient, and is prone to human error [8]. Therefore, there is the urgent need for a method or apparatus that will enable on-machine automatic measurement of through-hole depth, offering vital technical support to automatic drilling and riveting of largescale composite board parts.…”

Section: Introductionmentioning

confidence: 99%

A Novel Design of Through-Hole Depth On-Machine Optical Measuring Equipment for Automatic Drilling and Riveting

Zhao

Wang

et al. 2018

Applied Sciences

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In the aerospace manufacturing industry, it is impossible to achieve precise and efficient automatic drilling and riveting for largescale composite board parts. The bottleneck is that the depth detection of rivet holes still relies on manual operation, which seriously affects the assembly efficiency and stability of composite board parts. In order to realize accurate and efficient on-machine automatic measurement for through holes in the automatic drilling and riveting process of largescale composite board parts, this paper presents a novel hole depth measuring device. Its mechanical structure is developed based on our newly designed measurement scheme and optical path, the purpose of which is to convert the hole depth data into displacement data of the probe motion. Its electrical hardware consists of three units: a laser transceiver unit to pick up laser spots; a displacement measuring unit to capture the probe movement in real time; and a driving unit to achieve motion control of the probe. Finally, the experimental results indicated that the proposed method and device are capable of performing automatic measurements for through-hole depth. In addition, factors affecting the measuring accuracy and stability of the device are initially analyzed and discussed, which lay a foundation for subsequent research on error compensation and probe calibration.

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Quantification of initiating event frequencies and component reliability data in level 1 probabilistic safety assessment at Puspati TRIGA research reactor

Maskin

Hassan

Brayon³

et al. 2018

Annals of Nuclear Energy

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Operator response modeling and human error probability in TRIGA Mark II research reactor probabilistic safety assessment

Cited by 8 publications

References 9 publications

Application of FMEA and FTA techniques for assessing the occurrence of LOCA in a TRIGA MARK I Reactor

Application of FMEA and FTA techniques for assessing the occurrence of LOCA in a TRIGA MARK I Reactor

A Novel Design of Through-Hole Depth On-Machine Optical Measuring Equipment for Automatic Drilling and Riveting

Quantification of initiating event frequencies and component reliability data in level 1 probabilistic safety assessment at Puspati TRIGA research reactor

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