Control Zones 5
Control Zones 5 : Designated areas at dangerous goods incidents, based on safety and the degree of hazard. Many terms are used to describe control zones; however, in this guidebook, these zones are defined as the hot/exclusion/restricted zone, warm/contamination reduction/limited access zone, and cold/support/clean zone. (EPA Standard Operating Safety Guidelines, OSHA 29 CFR 1910.120, NFPA 472) Cryogenic liquid: A refrigerated, liquefied gas that has a boiling point colder than -90oC (-130oF) at atmospheric pressure