Reliability Assessment of a Full-ocean-depth Pressure-retaining Sediment Sampler Using Fault Tree Analysis

Seabed sediment samples are vital to the study of marine geology, microbial communities, and the history of life on earth, and pressure-retaining samplers are fundamental to obtaining sediment samples while maintaining in situ conditions. Due to the harsh environment, with extremely high pressures,...

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Autores principales:	Shudong He, Youduo Peng, Yongping Jin, Xiong Shu, Buyan Wan
Formato:	article
Lenguaje:	EN
Publicado:	Tamkang University Press 2021
Materias:	deep-sea sampler pressure-retaining reliability fault tree model failure rates Engineering (General). Civil engineering (General) TA1-2040 Chemical engineering TP155-156 Physics QC1-999
Acceso en línea:	https://doaj.org/article/c61ca440be2b4a2fb971640bc6d26fed
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spelling	oai:doaj.org-article:c61ca440be2b4a2fb971640bc6d26fed2021-11-23T14:49:33ZReliability Assessment of a Full-ocean-depth Pressure-retaining Sediment Sampler Using Fault Tree Analysis10.6180/jase.202202_25(1).00182708-99672708-9975https://doaj.org/article/c61ca440be2b4a2fb971640bc6d26fed2021-11-01T00:00:00Zhttp://jase.tku.edu.tw/articles/jase-202202-25-1-0018https://doaj.org/toc/2708-9967https://doaj.org/toc/2708-9975Seabed sediment samples are vital to the study of marine geology, microbial communities, and the history of life on earth, and pressure-retaining samplers are fundamental to obtaining sediment samples while maintaining in situ conditions. Due to the harsh environment, with extremely high pressures, low temperatures, and no light, samplers can easily fail as structural components are stressed beyond their limits. Therefore, it is essential to develop a pressure-retaining sampler with high reliability. In this paper, a sediment sampler that we developed was used as the research object. A fault tree model of the sampler was established using the fault tree analysis method, and the failure rate, reliability, and importance index of each component in the sampler were calculated under different working conditions. The results showed that the sampler’s O-ring seals were the component most likely to fail, with failure rates as high as 29.86. Furthermore, as operational time increased, the reliability of the sampler gradually decreased. Under ultra-high pressure, the reliability index decreased from 90.97 % after running for 1000 hours to 35.30 % after running for 11000 hours. These new discoveries have provided important insight for increasing the robustness of the design and establishing maintenance priorities for samplers to ensure high reliability.Shudong HeYouduo PengYongping JinXiong ShuBuyan WanTamkang University Pressarticledeep-sea samplerpressure-retainingreliabilityfault tree modelfailure ratesEngineering (General). Civil engineering (General)TA1-2040Chemical engineeringTP155-156PhysicsQC1-999ENJournal of Applied Science and Engineering, Vol 25, Iss 1, Pp 173-185 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	deep-sea sampler pressure-retaining reliability fault tree model failure rates Engineering (General). Civil engineering (General) TA1-2040 Chemical engineering TP155-156 Physics QC1-999
spellingShingle	deep-sea sampler pressure-retaining reliability fault tree model failure rates Engineering (General). Civil engineering (General) TA1-2040 Chemical engineering TP155-156 Physics QC1-999 Shudong He Youduo Peng Yongping Jin Xiong Shu Buyan Wan Reliability Assessment of a Full-ocean-depth Pressure-retaining Sediment Sampler Using Fault Tree Analysis
description	Seabed sediment samples are vital to the study of marine geology, microbial communities, and the history of life on earth, and pressure-retaining samplers are fundamental to obtaining sediment samples while maintaining in situ conditions. Due to the harsh environment, with extremely high pressures, low temperatures, and no light, samplers can easily fail as structural components are stressed beyond their limits. Therefore, it is essential to develop a pressure-retaining sampler with high reliability. In this paper, a sediment sampler that we developed was used as the research object. A fault tree model of the sampler was established using the fault tree analysis method, and the failure rate, reliability, and importance index of each component in the sampler were calculated under different working conditions. The results showed that the sampler’s O-ring seals were the component most likely to fail, with failure rates as high as 29.86. Furthermore, as operational time increased, the reliability of the sampler gradually decreased. Under ultra-high pressure, the reliability index decreased from 90.97 % after running for 1000 hours to 35.30 % after running for 11000 hours. These new discoveries have provided important insight for increasing the robustness of the design and establishing maintenance priorities for samplers to ensure high reliability.
format	article
author	Shudong He Youduo Peng Yongping Jin Xiong Shu Buyan Wan
author_facet	Shudong He Youduo Peng Yongping Jin Xiong Shu Buyan Wan
author_sort	Shudong He
title	Reliability Assessment of a Full-ocean-depth Pressure-retaining Sediment Sampler Using Fault Tree Analysis
title_short	Reliability Assessment of a Full-ocean-depth Pressure-retaining Sediment Sampler Using Fault Tree Analysis
title_full	Reliability Assessment of a Full-ocean-depth Pressure-retaining Sediment Sampler Using Fault Tree Analysis
title_fullStr	Reliability Assessment of a Full-ocean-depth Pressure-retaining Sediment Sampler Using Fault Tree Analysis
title_full_unstemmed	Reliability Assessment of a Full-ocean-depth Pressure-retaining Sediment Sampler Using Fault Tree Analysis
title_sort	reliability assessment of a full-ocean-depth pressure-retaining sediment sampler using fault tree analysis
publisher	Tamkang University Press
publishDate	2021
url	https://doaj.org/article/c61ca440be2b4a2fb971640bc6d26fed
work_keys_str_mv	AT shudonghe reliabilityassessmentofafulloceandepthpressureretainingsedimentsamplerusingfaulttreeanalysis AT youduopeng reliabilityassessmentofafulloceandepthpressureretainingsedimentsamplerusingfaulttreeanalysis AT yongpingjin reliabilityassessmentofafulloceandepthpressureretainingsedimentsamplerusingfaulttreeanalysis AT xiongshu reliabilityassessmentofafulloceandepthpressureretainingsedimentsamplerusingfaulttreeanalysis AT buyanwan reliabilityassessmentofafulloceandepthpressureretainingsedimentsamplerusingfaulttreeanalysis
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Reliability Assessment of a Full-ocean-depth Pressure-retaining Sediment Sampler Using Fault Tree Analysis

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