On April 17, 2013, a fire and explosion occurred at the West Fertilizer Company in West, Texas. Twelve emergency responders and three members of the public died. More than 260 people were treated by local hospitals. The U.S. Chemical Safety and Hazard Investigation Board (CSB) investigated the incident. The CSB determined that about 40 percent of the 30 tons of fertilizer‐grade ammonium nitrate (FGAN) detonated to cause the explosion. The CSB found that there were no effective federal regulations of FGAN in effect at the time of the explosion. They subsequently describe the initial federal response to the explosion as of the date of the CSB report; an Executive Order for, among many other things, modernizing federal policies and regulations surrounding chemical facilities, including those storing FGAN such as West Fertilizer. Presented here is a followup report of this modernization, focusing on the changes that impact process safety. This effort initially took the form of amendments to the Environmental Protection Agency (EPA) regulation 40 C.F.R. § 68 Chemical Accident Prevention Provisions. Following the implementation of the amendments, the EPA subsequently took action to rescind the bulk of the changes.

中文翻译：

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West Fertilizer 监管遗产 - EPA RMP 修正案

2013 年 4 月 17 日，德克萨斯州西部的西部肥料公司发生火灾和爆炸。12 名紧急救援人员和 3 名公众死亡。超过260人在当地医院接受治疗。美国化学品安全与危害调查委员会 (CSB) 调查了该事件。CSB 确定 30 吨化肥级硝酸铵 (FGAN) 中约有 40% 引爆导致爆炸。CSB 发现在爆炸发生时没有有效的 FGAN 联邦法规。他们随后描述了截至 CSB 报告日期联邦对爆炸的初步反应；一项行政命令，其中包括使围绕化学设施的联邦政策和法规现代化，包括那些储存 FGAN 的化学设施，如 West Fertilizer。此处介绍的是此现代化改造的后续报告，重点关注影响过程安全的变化。这项工作最初采取了对环境保护署 (EPA) 法规 40 CFR § 68 化学事故预防规定进行修订的形式。随着修正案的实施，美国环保署随后采取行动撤销大部分更改。