ScienceOpen📣🆕 on #ScienceOpen: 'Investigation of an occupational acute carbon monoxide poisoning incident caused by nitrogen generator failure' - a China #OccupationalMedicine article -
🔗 https://www.scienceopen.com/document?vid=957cb5f2-a83c-45a4-938e-f76739fa399e
#CarbonMonoxidePoisoning #WorkplaceSafety #Toxicology #OccupationalHealth #AcutePoisoning
Investigation of an occupational acute carbon monoxide poisoning incident caused by nitrogen generator failure
<p xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" dir="auto" id="d9463135e109"> <b>Objective</b> To analyze the characteristics and causes of an occupational acute carbon monoxide poisoning incident caused by a nitrogen generator malfunction. </p><p xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" dir="auto" id="d9463135e114"> <b>Methods</b> The workers and the workshop from an electronic component manufacturing company in Guangzhou City, which had an occupational acute carbon monoxide poisoning incident, were selected as the research subjects using the retrospective investigation method. Relevant data of worksite survey of occupational health, clinical records of poisoning patients, and occupational disease diagnosis data were collected for analysis. </p><p xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" dir="auto" id="d9463135e119"> <b>Results</b> A total of 15 workers who experienced discomfort in this incident, were from the final inspection workshop using high-purity nitrogen (purity of 99.999%). The short-term exposure concentration of carbon monoxide in the workplace air at three oven operating posts using high-purity nitrogen was 64.1, 581.0, and 142.0 mg/m <sup>3</sup>, respectively, while the concentration in the workplace air at the oven operating posts using regular nitrogen and the nitrogen-generating room was <0.1 mg/m <sup>3</sup>. Carboxyhemoglobin saturation levels in the 15 patients ranged from 2.000%-17.300%. Occupational acute mild carbon monoxide poisoning was diagnosed in nine patients, occupational acute carbon monoxide exposure reactions was diagnosed in six patients. This poisoning incident was caused by machine malfunction and improper operation, leading to occupational acute carbon monoxide poisoning. </p><p xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" dir="auto" id="d9463135e130"> <b>Conclusion</b> Companies using nitrogen production machine should enhance their ability to identify carbon monoxide risks, strengthen training and management of workers, establish emergency response plans for nitrogen production and use, ensure proper maintenance of production equipment, and optimize operational procedures to prevent acute poisoning incidents. </p><p xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" class="first" dir="auto" id="d9463135e136"> <b>摘要: 目的</b>分析1起由制氮机故障引起的职业性急性一氧化碳中毒事件的特点与原因。 <b>方法</b>采用回顾性调査方 法, 以广州市某电子元件制造企业发生的1起急性一氧化碳中毒事件涉及的车间和患者为研究对象, 收集现场职业卫生 调査资料、中毒患者临床资料和职业病诊断资料进行分析。 <b>结果</b>该起中毒事件共导致15名工人出现不适, 均发生在 使用髙纯氮气(纯度为99.999%)的最终检验车间。3个使用髙纯氮气的烤箱操作岗工作场所空气中一氧化碳短时间接 触浓度分别为64.1、581.0和142.0 mg/m <sup>3</sup>,使用普通氮气的烤箱操作岗和制氮房工作场所空气中一氧化碳短时间接触浓 度均<0.1 mg/m <sup>3</sup>。15名患者血中碳氧血红蛋白饱和度为2.000% ∼ 17.300%；名患者诊断为职业性急性一氧化碳轻度中 毒, 6名患者诊断为职业性急性一氧化碳接触反应。该起中毒事故为因机器故障与操作不规范导致的职业性急性一氧 化碳中毒事件。 <b>结论</b>使用制氮机企业应加强一氧化碳风险识别能力, 加强工人的培训和管理, 制定制备和使用氮气的 应急预案, 保持生产设备正常运行, 优化作业流程, 以避免发生职业性急性中毒事故。 </p>
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