ISO 14644-7 Transfer Devices - Foster Wheeler Italiana

ISO 14644-7: Terms and Definitions• access device: device for manipulation of processes, tools or products within theseparative device• action level:level set by the user in the context of controlled environments, whenexceeded immediate follow-up is required as well as investigation with subsequentcorrective action• alert level :level set by the user for controlled environments giving early warning ofa potential drift from normal conditions, when exceeded an investigation is requiredto ensure that the process and environment are under control.• breach velocity :velocity through an aperture sufficient to prevent movement ofmatter in the opposite direction to the flow• containment :state achieved by separative devices with high degree of separationbetween operator and operation• leak (of separative devices) :defect revealed by testing under a pressure differentialafter corrections for atmospheric conditions• pressure integrity :capability to provide a quantifiable pressure leakage raterepeatable under test conditions• separative device :equipment utilizing constructional and dynamic means to createassured levels of separation between the inside and outside of a defined volume18