If your last name begins with R-Z, answer this question). Explain a Class Four ensemble. Include levels of protection, functionality, and limitations. Identify the proper respiratory protection for a Class Four ensemble, and explain how this particular device functions. Provide a unique example of when a first responder would utilize a Class Four ensemble.
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Respiratory Protection Class Four ensembles are used when a biological or radiological particulate hazards are below IDLH levels ; APR or PAPR respiratory protection is permitted ” ( Maniscalco & Christen , 2006 , p. 188 ) , however it does not provide protection against chemical vapors or liquids it is only designed for particulate protection . Thys type of PPE would be used in an Anthrax or suspicious powder investigation . The advantage of a Class 4 ensemble is the protective garment system is lightweight and places less physical stress on the wearer than the higher levels of protection . ” Operations teams can work for longer periods with a higher level of comfort and lower level of heat stress when they wear Class 4 ensembles ” ( Maniscalco & Christen , 2006 , p. 188 ) . The limitations of a Class Four Ensemble ” does not protect against liquid or vapor hazards ; not suitable in oxygen deficient areas ” ( Maniscalco & Christen , 2006 , p. 188-189 ) A first responder would utilize a Class Four Ensemble in terrorism incidents involving biological or radiological particulate hazards only where the concentrations are below levels immediately dangerous to life or health . A class Four Ensemble provides the least protection for first responders , whereas Class One Ensembles provides the most protection . ” Class 4 ensembles must cover the individual ; however , the respirator certified with the ensemble may cover the face of the wearer . Because these ensembles are intended for longer wearing periods , the use of air-purifying respirators or powered air-purifying respirators with these suits is likely ” ( CBRNE , 2015 ) .