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首页> 外文学位 >Evaluation of automated vs. manual bagger exposures related to ergonomics, dust, and noise at a sand mine processng plant.
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Evaluation of automated vs. manual bagger exposures related to ergonomics, dust, and noise at a sand mine processng plant.

机译：在一家沙加工工厂评估与人机工程学，灰尘和噪音有关的自动装袋机与手动装袋机的接触。

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摘要

Since 2000, the Mine Safety and Health Administration (MSHA) has reported 737 injuries involving bagging. Most of these injuries were related to "over-exertion" with an MSHA injury classification of "strains, sprains, and ruptured discs." "Over-exertion" accounted for 331,130 injuries totaling 14.2 billion dollars in workers compensation costs in 2012 according to the National Safety Council (NSC). According to NSC, the average total incurred cost of an "over-exertion" injury is ;Manual bagging in a sand mine processing plant is a highly physical job. There are six physical workplace risk factors associated with the development of work-related musculoskeletal disorders (WMSDs); posture, compression, force, repetition, vibration, and duration. These must occur in some combination to cause WMSDs. Manual bagging risk factors include posture, compression, force, repetition, and duration. Despite all of these risk factors, implementing an automated bagging system is an expensive capital project that is generally difficult to justify for most companies.;The objectives of this research are to determine if implementing an automated bagging system will not only decrease exposures to physical work place risk factors (ergonomic hazards), but also decrease exposures to noise, respirable dust and respirable crystalline silica, as justification for the cost of such a system. Additionally, the research is investigating if there is a reduction in injuries and workers compensation costs to a plant that implements an automated system.;Ergonomic evaluations were performed on nine employees with the job description of "bagger" at four industrial mineral mine processing plant locations in the United States. Ergonomic analyses were performed using the NIOSH "Ergonomics Audits for Mining Bagging, Haul Truck, and Maintenance and Repair Operations" Auditing Tool and the Rapid Upper Limb Assessment (RULA) for the job sub-task of tying bulk-bags.;A nonparametric Wilcoxon sum-rank test was performed on the dust and noise data using SAS software considering exposures before and after the implementation of a fully automated bagging system.;The statistical analysis showed a statistically significant reduction in the noise exposures, however there was not a statistically significant reduction in the respirable dust or respirable crystalline silica exposures. The ergonomic hazards associated with manual bagging are numerous and have far reaching potential in regards to the risk of injury. Almost all of the risk factors associated with workplace musculoskeletal disorders are associated with manual bagging. The implementation of a completely automated bagging system would all but eliminate the ergonomic exposures. The yearly adjusted injury rate dropped from 2.76 per year to 0.72 per year after the implementation of an automated system in Plant A. Also, the estimated reduction in workers compensation claims is approximately ;Based on the ergonomic evaluation of manual bagging as well as the positive reduction in noise exposure it is safe to say that automated bagging systems are worth the upfront costs if they only prevent even one injury a year.
机译：自2000年以来，矿山安全与健康管理局（MSHA）报告了737起涉及套袋的伤害。这些伤害大多数与“过度劳累”有关，MSHA的伤害分类为“劳损，扭伤和椎间盘破裂”。据美国国家安全委员会（NSC）称，“过度劳累”造成331,130人受伤，2012年共计赔偿142亿美元。根据NSC的说法，“过度劳累”伤害的平均总损失成本为；在矿山加工厂中手动装袋是一项高度物理的工作。与工作相关的肌肉骨骼疾病（WMSD）的发展相关的六种物理工作场所危险因素；姿势，压缩，力，重复，振动和持续时间。这些必须以某种组合发生以引起WMSD。手动装袋的危险因素包括姿势，压迫，用力，重复和持续时间。尽管存在所有这些风险因素，但实施自动化装袋系统是一项昂贵的资本项目，对于大多数公司而言通常很难证明其合理性;该研究的目的是确定实施自动化装袋系统是否不仅会减少体力劳动的风险放置风险因素（符合人体工程学的危害），还可以减少噪音，可吸入粉尘和可吸入结晶性二氧化硅的暴露，以此作为此类系统成本的理由。此外，该研究正在调查实施自动化系统的工厂是否能减少工伤和工人补偿费用。；对9名员工进行了人体工程学评估，在四个工业矿山加工厂的工作描述为“ bagger”在美国。使用NIOSH“矿山装袋，运输卡车以及维护和维修操作的人机工程学审核”审核工具和快速上肢评估（RULA）进行了人机工程学分析，以捆扎散装袋的工作。非参数Wilcoxon在实施全自动装袋系统之前和之后，使用SAS软件对灰尘和噪声数据进行了总和检验，其中考虑了暴露情况;统计分析表明，噪声暴露在统计学上有显着降低，但没有统计学显着性减少可吸入的粉尘或可吸入的结晶二氧化硅暴露。与手工装袋相关的人体工程学危害很多，在伤害风险方面具有深远的潜力。与工作场所肌肉骨骼疾病相关的几乎所有危险因素均与手工装袋有关。完全自动化的装袋系统的实施几乎消除了人体工程学方面的风险。在工厂A中实施自动化系统后，年调整后的伤害率从每年的2.76降至每年的0.72。此外，根据人工装袋的人体工程学评估以及减少噪音暴露可以肯定地说，如果自动套袋系统每年仅能防止一次伤害，那么值得付出的前期成本。

著录项

  • 作者

    Wilson, Lindsie Alyse.;

  • 作者单位

    Montana Tech of The University of Montana.;

  • 授予单位 Montana Tech of The University of Montana.;
  • 学科 Occupational safety.;Mining engineering.
  • 学位 M.S.
  • 年度 2015
  • 页码 268 p.
  • 总页数 268
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

  • 入库时间 2022-08-17 11:52:58

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