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Process Hazard Analysis Report July 2020 <br /> 4 Study Methodology <br /> A What-if analysis is a means to identify the potential hazards of a facility, evaluate <br /> the significance of the hazards, evaluate the adequacy of existing safeguards, and <br /> list preliminary recommendations to reduce or eliminate the likelihood or severity of <br /> the hazards. This PHA technique is an OSHA (29 CFR §1910.119(e)(2)(iii)), and <br /> EPA (40 CFR §68.67(b)), 8 CCR 5189, 19 CCR Division 2, Chapter 4.5, 2755.2, <br /> California Accidental Release Prevention Program, Hazard Review approved <br /> method. <br /> The What-If/Checklist technique was used for this process hazard analysis study. <br /> There were several reasons for selecting the What-If technique. First, the <br /> technique is highly effective in situations where the system and hazards are well <br /> understood. For the Oak Ridge Winery refrigeration systems, there is a single main <br /> constituent (anhydrous ammonia) in a looped system. Analysis of the system <br /> demands merely a basic understanding of heat transfer, fluid flow, and phase <br /> change phenomena. With respect to process hazards, scenarios of interest <br /> invariably reduce to a release of ammonia — a chemical with well understood and <br /> extensively documented impacts on human health and safety. Thus, a situation <br /> presented itself where both the system and the process hazards were easily <br /> understood. <br /> In addition, the What-If technique enjoys wide acceptance among safety and risk <br /> practitioners and associated agencies. This includes written acknowledgment by <br /> IIAR, American Petroleum Institute (API), Center for Chemical Process Safety <br /> (CCPS), Chemical Manufacturers Association (CMA), OSHA and the EPA. <br /> Another important factor was the availability of data from a generic What-If. The <br /> generic data — which was reviewed, customized, and supplemented for this <br /> specific system — helped ensure the thoroughness and quality of this compliance <br /> targeting study. <br /> 4.1 Composition of Team <br /> This what-if study was conducted by a team of individuals with knowledge of <br /> engineering, safety, control programming, operations, and maintenance. It relied on <br /> the team to brainstorm potential hazard causing situations. The team was led by an <br /> individual with expertise in the what-if study technique. The team was comprised of <br /> the following individuals: <br /> 8 <br />