Respirators particulate-filtering

Black smoke (BS) is a particulate measure that typically contains at least 50% respirable particulates smaller than 4.5 mm in aerodynamic diameter, sampled by the British smokeshade (BS) method. The reflectance of light is measured by the darkness of the stain caused by particulates on a white filter paper. The result of BS sampling depends on the density of the stain and the optical properties of the particulates. Because the method is based on reflectance from elemental carbon, its use is recommended in areas where coal smoke from domestic fires is the dominant component of ambient particulates. 

Air line breathing apparatus Canister respirator Self-contained breathing apparatus Canister respirators with particulate filters Cartridge respirator General purpose dust respirators High efficiency dust respirators... 

Dust masks, or particulate filter respirators, protect the respiratory system against any kind of inhaled particles. The simplest type, in the form of a cone-shaped fibrous filter that fits over the nose and mouth, is held in place by an elastic band around the back of the head. It is disposable, relatively comfortable to wear, and is useful when the dust is neither excessive nor toxic. It becomes readily clogged and should be discarded and replaced whenever breathing becomes restricted. Its use should not be carried over from day to day. 

Fitz, D. R., G. J. Doyle, and J. N. Pitts, Jr., An Ultra-High Volume Sampler for the Multiple Filter Collection of Respirable Particulate Matter, J. Air Pollut. Control Assoc., 33, 877-879 (1983). 

Respirators protect the user in two basic ways. The first is by the removal of contaminants from the air. Respirators of this type include particulate respirators that filter out airborne particles and gas masks that filter out chemicals and gases. Other respirators protect by supplying clean respirable air from another source. Respirators that fall into this category include airline respirators that use compressed air from a remote source and self-contained breathing apparatus (SCBA) that include their own air supply. 

PERSONAL PROTECTION wear impervious protective clothing, including boots, chemical-resistant gloves, lab coat, apron or coveralls wear dust-resistant goggles when working with powders or dust a system of local exhaust ventilation is recommended to control emissions at the source and to prevent dispersion into general work area appropriate respirators equipped with particulate filters are needed in areas where the exposure would be above the permissible exposure level (PEL) for increased protection use self-contained breathing apparatus maintain eyewash baths and safety showers in work area. 

Any particulate filter respirator for dust and mist except single-use respirator or (2) Any particulate filter respirator or combination chemical cartridge and particulate filter respirator for coke oven... 

XPEL Disposable respirator widi a particulate filter. 

X PEL Quarter- or half-mask respirator, odier dian a disposable respirator, equipped widi particulate filters. 

X PEL Full-facepiece respirator equipped widi high-efficiency particulate filters. ... 

Particulate respirator or filter that is 95% efficient. See Table 4 (page xxv) to... 

PaprAgHie 25 Any powered air-purifying respirator with acid gas cartridge(s) in combination with a high-efficiency particulate filter. 

The test subject shall don the enclosure while wearing the respirator selected in Section I. A. of this appendix. The respirator shall be properly adjusted and equipped with a particulate filter(s). 

Bullard EVA Powered Air-Purifying Respirator offers 1,000 APR visual fuel gauge, single filter design, and a combination chemical and particulate filter. NIOSH approved, EVA can be used with Bullard Tychem hoods and Spectrum Series full facepiece. Visit Bullard Booth 207 at ASSE, learn more at www.bullard.com or customize your EVA PAPR at www. buildyourbullard.com. Booth 207. Cbvie 307... 

A container filled with sorbents and catalysts that remove gases and vapors from air drawn through the unit. The canister may also contain an aerosol (particulate) filter to remove solid or liquid particles. See also Respirator. 

Respirators should comply with national or European standards such as EN 143 for Particulate filters and EN 149 for Filtering half masks to protect against particles. Distinction has to be made between suitability for solid or liquid particle filtration. 

Local regulations for exposure limit should be followed. If these are exceeded, air-purifying respirators with a particulate filter should be used. As a principle of good industrial hygiene, safety spectacles with side-shields or better protection should be worn when handling titanium dioxide. 

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