'Why Don’t We Just Put It in the Hood?': Issues with Degrading Hood Effectiveness Due to Equipment Placement

摘要

Placing equipment in a hood does not always guarantee a safe installation. This Article discusses the various issuesassociated with proper functioning of a hood with significant research equipment installed in it. The Article briefly discusses hoodtest methods and issues with assessing hood performance. It then highlights some common problems including storage, large solidobjects, equipment which does not belong in a hood and/or will not fit in the hood, horizontal blockage, and some operationalissues. The paper then suggests some approaches to avoiding these issues. The focus is understanding what reduces the effectivenessof a hood so that it can be adequately addressed as part of the hazard analysis and risk assessment to ensure a safe operation.