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Frequency Analysis of Failure Scenarios from Shale Gas Development

机译:页岩气开发失败情景的频率分析

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摘要

This study identified and prioritized potential failure scenarios for natural gas drilling operations through an elicitation of people who work in the industry. A list of twelve failure scenarios of concern was developed focusing on specific events that may occur during the shale gas extraction process involving an operational failure or a violation of regulations. Participants prioritized the twelve scenarios based on their potential impact on the health and welfare of the general public, potential impact on worker safety, how well safety guidelines protect against their occurrence, and how frequently they occur. Illegal dumping of flowback water, while rated as the least frequently occurring scenario, was considered the scenario least protected by safety controls and the one of most concern to the general public. In terms of worker safety, the highest concern came from improper or inadequate use of personal protective equipment (PPE). While safety guidelines appear to be highly protective regarding PPE usage, inadequate PPE is the most directly witnessed failure scenario. Spills of flowback water due to equipment failure are of concern both with regards to the welfare of the general public and worker safety as they occur more frequently than any other scenario examined in this study.
机译:这项研究通过启发业内人士,确定并优先考虑了天然气钻井作业的潜在故障场景。列出了十二种值得关注的故障场景,重点关注页岩气开采过程中可能发生的涉及运行故障或违反法规的特定事件。参与者根据对公众健康和福利的潜在影响,对工人安全的潜在影响,安全准则如何防止其发生以及发生的频率,对这十二种情况进行了优先排序。非法倒流水虽然被认为是最不经常发生的情况,但被认为是受安全控制措施保护最少的情况,也是最受公众关注的情况。在工人安全方面,最严重的担忧是个人防护设备(PPE)使用不当或使用不当。尽管安全准则似乎对PPE的使用具有高度保护作用,但PPE不足是最直接见证的故障情况。由于设备故障而造成的倒水泄漏,不仅关系到公众的福祉,而且也关系到工人的安全,因为与本研究中检查的任何其他情况相比,泄漏事故的发生频率更高。

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