NAFA CAFS /Exam Questions With 100% Correct Answers.

NAFA CAFS /Exam Questions With 100% Correct Answers. What are the 3 types of media used in contaminate control - answerActive carbon, chemically treated carbon, potassium permanganate What is residence time? - answerthe 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 - answerclean 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 - answerThe fraction of the contaminate that once in contact with the media is removed by either physical or chemical means What is Capacity - answerThe amount the media is capable of removing - this determines the life of the filter What are two types of filter options - answerpartial bypass, total retention What is the ASHRAE standard 62.1/62.2 - answerVentilation 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? - answer4 What are the IAQ testing applications - answerParticulate contaminants, Gas phase, systems integrity, comfort parameters What are the control strategies - answerFiltration, source removal, Dilution Min demonstrated overspray filter eff must be at least - answer98% What is the min eff for a Super ULPA - answer99.9999% on MPPS What are the factors affecting ESP design and efficiency - answerpartical 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 - answerVirus, Bacteria, Fungi A baghouse is composed of - answerhouse, hoppers, tubesheet and plenum A typical oil mist electrostatic presipitator has what sections (inlet to outlet) - answerBaffle, ionizer, collecting, fan and optional after filter PCO has how many types of reactor configurations - answer4 In the filter industry, a manometer is used to measure what? - answerPressure drop across the filter Airflow through a booth must be? - answerhigh enough to keep the concentration of VOC vapor below 25% of its lowest explosive limit ULPA stands for? - answerUltimate low penetration Air Filter Name the components of a HEPA filter - answerMedia, separators, filter pack, sealant, framing, gasketing What size particles behave like a gas, have negligible settling rates and are affected by Brownian Motion - answerParticals less than .1 microns A 2 stage air cleaner utilizes what 2 things? - answerAn Ionizer section, a collector section Name the types of HEPA separator styles - answer'aluminum and mini pleat Name the different HEPA frame material - answerPartical board, plywood, extruded alum, formed sheet metal What is media velocity - answerthe speed of the air as it moves through the filter media What are the types of HEPA filter sealants - answerRubber bases, urethane, epoxy, hot melt, silicone What are the styles of Dust Separation equipment - answercyclone, shaker, reverse pulse, jet pulse What are the different types of air cleaners - answermedia, electronic, agglomorators what is the minimum efficiency for ULPA - answer99.999% on .1 to .2 microns What are the two types of cleanroom filters - answerroomoside replaceable ceiling module, fan powered module Removal of dust on an elctronic air cleaner is done how - answerwashed off, if it has agglomerated it can be blown off Lofted glass media can be found most often in what style filter - answerPocket or rigid What is final resistance - answerpressure at which the filter would be considered fully loaded