The effects of arc blast pressures have been theorized for about years, but the direct effect on workers has been less studied. A search of the literature gives no satisfactory quantification for hazard assessment [1]. Most articles to date with any worker focus have measured or predicted noise levels for auditory damage, but there is still no consensus standard or unified method to predict the pressure or thermoacoustic blast created by an arc. In a 2016 article, on the effect of copper and steel vapor, the authors also looked at the speed of an ejected door; however, that article did not address additional buildup of pressure should the door be affixed, as real doors are [1]. This article presents the results of affixing the door with both light and heavy gauge hardware as suggested in Crawford–Clark–Doughty [2]. These represent two different levels of shear strength to assess the effect of allowing pressure to build on the face of the door. Additionally, an impact plate and a load cell are used to measure the actual force from the ejected door to estimate the effect on a human worker. More work will need to be done to develop an arc blast assessment model, but the measurements obtained by these experiments may lead toward a productive means to develop one. Although the authors know of only one fatality [2] and a few injuries from arc blast, it is important to understand if, and when, severe injuries could occur. And with the removal of the 40 cal/cm² limit to arc flash exposure in the 2018 NFPA 70E—since the committee correctly understood that incident energy has no correlation to arc blast [3]—it is also important to determine where a limit might be needed for worker safety, and what fault current and containment size could be dangerous until most equipment is arc resistant.

中文翻译：

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电弧闪光压力和门弹射测量

电弧爆炸压力的影响已经被理论化了大约多年，但对工人的直接影响却鲜有研究。对文献的搜索没有给出令人满意的危害评估量化[1]. 迄今为止，大多数以工人为重点的文章都测量或预测了听觉损伤的噪音水平，但仍然没有一致的标准或统一的方法来预测电弧产生的压力或热声爆炸。在 2016 年的一篇关于铜和钢蒸气影响的文章中，作者还研究了弹出门的速度；然而，那篇文章并没有解决安装门时额外的压力积聚问题，因为真正的门是[1]. 本文介绍了使用 Crawford-Clark-Doughty 中建议的轻型和重型五金件固定门的结果[2]. 这些代表了两种不同水平的剪切强度，以评估允许压力在门面上形成的影响。此外，冲击板和称重传感器用于测量弹出门的实际力，以估计对人类工人的影响。需要做更多的工作来开发电弧爆炸评估模型，但这些实验获得的测量结果可能会导致开发一种富有成效的方法。尽管作者只知道一个人死亡[2]以及电弧爆炸造成的一些伤害，重要的是要了解是否以及何时可能发生严重伤害。并且在 2018 年 NFPA 70E 中取消了对电弧闪光暴露40 cal/cm ^{2 的}限制——因为委员会正确理解入射能量与电弧爆炸无关[3]- 确定工人安全可能需要的限制以及在大多数设备具有抗电弧性之前什么故障电流和安全壳尺寸可能是危险的也很重要。