NAFA CAFS Exam | Actual Exam Questions | 100% Correct Answers | Verified 2024 Version

What are the 3 types of media used in contaminate control - Active carbon, chemically treated carbon, potassium permanganate What is residence time? - the time it takes air to cross a distance equal to the thickness of the filter without accounting for the resistance of the media through which it travels What are the variations of the contamination control principle - clean the air required by the process, blanket the product with cleaned air, offer enough air flow to move contaminated air away from the product What is removal efficiency - The fraction of the contaminate that once in contact with the media is removed by either physical or chemical means What is Capacity - The amount the media is capable of removing - this determines the life of the filter What are two types of filter options - partial bypass, total retention What is the ASHRAE standard 62.1/62.2 - Ventilation for acceptable indoor air quality to specific minimum ventilation rates IAQ which will be acceptable to humans and are intended to avoid adverse health effects How many classifications of air is there? - 4 What are the IAQ testing applications - Particulate contaminants, Gas phase, systems integrity, comfort parametersWhat are the control strategies - Filtration, source removal, Dilution Min demonstrated overspray filter eff must be at least - 98% What is the min eff for a Super ULPA - 99.9999% on MPPS What are the factors affecting ESP design and efficiency - partical size, velocity through filter, voltage on ionizer and collector, collector plate spacing, collector plate loading, ionizer spacing and ozone What are the types of Microorganisms - Virus, Bacteria, Fungi A baghouse is composed of - house, hoppers, tubesheet and plenum A typical oil mist electrostatic presipitator has what sections (inlet to outlet) - Baffle, ionizer, collecting, fan and optional after filter PCO has how many types of reactor configurations - 4 In the filter industry, a manometer is used to measure what? - Pressure drop across the filter Airflow through a booth must be? - high enough to keep the concentration of VOC vapor below 25% of its lowest explosive limit ULPA stands for? - Ultimate low penetration Air Filter Name the components of a HEPA filter - Media, separators, filter pack, sealant, framing, gasketing What size particles behave like a gas, have negligible settling rates and are affected by Brownian Motion - Particals less than .1 micronsA 2 stage air cleaner utilizes what 2 things? - An Ionizer section, a collector section Name the types of HEPA separator styles - 'aluminum and mini pleat Name the different HEPA frame material - Partical board, plywood, extruded alum, formed sheet metal What is media velocity - the speed of the air as it moves through the filter media What are the types of HEPA filter sealants - Rubber bases, urethane, epoxy, hot melt, silicone What are the styles of Dust Separation equipment - cyclone, shaker, reverse pulse, jet pulse What are the different types of air cleaners - media, electronic, agglomorators what is the minimum efficiency for ULPA - 99.999% on .1 to .2 microns What are the two types of cleanroom filters - roomoside replaceable ceiling module, fan powered module Removal of dust on an elctron