Full face respirator

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# 1910.134 RESPIRATORY PROTECTION (cont.) ## 1910.134(d) Selection of respirators. (cont.) 1910.134(d)(2)(i)(B) A combination full facepiece pressure demand supplied-air respirator (SAR) with auxiliary self-contained air supply. 1910.134(d)(2)(ii) Respirators provided only for escape from IDLH atmospheres shall be NIOSH-certified for escape from the atmosphere in which they will be used. 1910.134(d)(2)(iii) All oxygen-deficient atmospheres shall be considered IDLH. Exception: If the employer demonstrates that, under all foreseeable conditions, the oxygen concentration can be maintained within the ranges specified in Table II of this section (i.e., for the altitudes set out in the table), then any atmosphere-supplying respirator may be used. - 1910.134(d)(3) Respirators for atmospheres that are not IDLH. 1910.134(d)(3)(i) The employer shall provide a respirator that is adequate to protect the health of the employee and ensure compliance with all other OSHA statutory and regulatory requirements, under routine and reasonably foreseeable emergency situations. 1910.134(d)(3)(i)(A) Assigned Protection Factors (APFs) Employers must use the assigned protection factors listed in Table 1 to select a respirator that meets or exceeds the required level of employee protection. When using a combination respirator (e.g., airline respirators with an air-purifying filter), employers must ensure that the assigned protection factor is appropriate to the mode of operation in which the respirator is being used. <table><tr><th colspan="6">TABLE 1. ASSIGNED PROTECTION FACTORS 5</th></tr><tr><td>Type of respirator 1,2</td><td>Quarter mask</td><td>Half mask</td><td>Full face- piece</td><td>Helmet/ hood</td><td>Loose-fitti ng facepiece</td></tr><tr><td>1. Air-Purifying Respirator</td><td>5</td><td>³¹⁰</td><td>50</td><td>-</td><td>-</td></tr><tr><td>2. Powered Air-Purifying Respirator (PAPR)</td><td>-</td><td>50</td><td>1,000</td><td>425/1,000</td><td>25</td></tr><tr><td>3. Supplied-A…

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# 1910.1051 1,3-Butadiene (cont.) ## 1910.1051(h)(2 Respirator program. (cont.) 1910.1051(h)(3) Respirator selection. 1910.1051(h)(3)(i) The employer must select appropriate respirators from Table 1 of this section. <table><tr><th colspan="2">Table 1 Minimum Requirements for Respiratory Protection for Airborne BD</th></tr><tr><td>Concentration of airborne BD (ppm) or condition of use</td><td>Minimum required respirator</td></tr><tr><td>Less than or equal to 5 ppm (5 times PEL).</td><td>(a) Air-purifying half mask or full facepiece respirator equipped with approved BD or organic vapor cartridges or canisters. Cartridges or canisters shall be replaced every 4 hours.</td></tr><tr><td>Less than or equal to 10 ppm (10 times PEL).</td><td>(a) Air-purifying half mask or full facepiece respirator equipped with approved BD or organic vapor cartridges or canisters. Cartridges or canisters shall be replaced every 3 hours.</td></tr><tr><td rowspan="3">Less than or equal to 25 ppm (25 times PEL).</td><td>(a) Air-purifying full facepiece respirator equipped with approved BD or organic vapor cartridges or canisters. Cartridges or canisters shall be replaced every 2 hours.</td></tr><tr><td>(b) Any powered air-purifying respirator equipped with approved BD or organic vapor cartridges. PAPR cartridges shall be replaced every 2 hours.</td></tr><tr><td>(c) Continuous flow supplied air respirator equipped with a hood or helmet.</td></tr><tr><td rowspan="2">Less than or equal to 50 ppm (50 times PEL).</td><td>(a) Air-purifying full facepiece respirator equipped with approved BD or organic vapor cartridges or canisters. Cartridges or canisters shall be replaced every (1) hour.</td></tr><tr><td>(b) Powered air-purifying respirator equipped with a tight-fitting facepiece and an approved BD or organic vapor cartridges. PAPR cartridges shall be replaced every (1) hour.</td></tr><tr><td>Less than or equal to 1,000 ppm (1,000 times PEL).</td><td>(a) Supplied air respirator equipped with a ha…

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# Respirators - Respirator Selection (cont.) ## What are the different classes of respirators? (cont.) - Gas masks (contain more adsorbent than cartridge-type respirators and can provide a higher level of protection than chemical cartridge respirators) - Powered air-purifying respirators (PAPRs) Supplied-air respirators (SARs): - Self-contained breathing apparatus (SCBA) - Airline supplied-air respirators - Protective suits that totally encapsulate the wearer's body and incorporate a life-support system Supplied air respirators can be divided into demand-type (where air only flows into the facepiece as needed by the user), pressure-demand (which maintains a positive pressure in the facepiece), and continuous flow (for escape only). Additionally, SCBAs can be open circuit (where air is not recycled) or closed circuit (where air is recycled). Demand-type open circuit SCBAs are not suitable for IDLH environments. There are some combinations of air line respirators and SCBAs that allow workers to work for extended periods in oxygen-deficient areas or where there are airborne toxic contaminants. The auxiliary or backup SCBA source allows the worker to escape with an emergency source of air if the airline source fails. There are also combination air-purifying and atmosphere supplying respirators. These devices will offer worker protection if the supplied-air system fails when the appropriate air-purifier units are selected. These respirators cannot be used in oxygen-deficient areas or where the air concentration of a contaminant exceeds the IDLH level. Since filters capture particles, caution must be exercised to always check that these filters are not clogged as it makes it harder for air to pass through. Cartridges can also become "full" or saturated. They will stop working and "breakthrough" will occur - this term means that the gases or vapours will leak through the cartridge. Both cartridges and filters must be replaced on a regular basis by using the manu…

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# Lead (cont.) ## What is the American Conference of Governmental Industrial Hygienists (ACGIH®) recommended exposure limit for lead? (cont.) Engineering Controls: Use a local exhaust ventilation and enclosure, if necessary, to control amount in the air. Use stringent control measures such as process enclosure to prevent product release into the workplace. ## What Personal Protective Equipment (PPE) is needed when working with lead? Eye/Face Protection: Wear chemical safety goggles. Skin Protection: Wear chemical protective clothing e.g. gloves, aprons, boots. ## Respiratory Protection: Up to 0.5 mg/m³: (APF = 10) Any air-purifying respirator with an N100, R100, or P100 filter (including N100, R100, and P100 filtering facepieces) except quarter-mask respirators; or Any supplied-air respirator. Up to 1.25 mg/m3:(APF = 25) Any supplied-air respirator operated in a continuous-flow mode; Any powered, air-purifying respirator with a high-efficiency particulate filter. Up to 2.5 mg/m3 (APF = 50) Any air-purifying, full-facepiece respirator with an N100, R100, or P100 filter. Click here for information on selection of N, R, or P filters; Any supplied-air respirator that has a tight-fitting facepiece and is operated in a continuous-flow mode; Any powered, air-purifying respirator with a tight-fitting facepiece and a high-efficiency particulate filter; Any self- contained breathing apparatus with a full facepiece; Any supplied-air respirator with a full facepiece. Up to 50 mg/m3: (APF = 1000) Any supplied-air respirator operated in a pressure-demand or other positive- pressure mode Up to 100 mg/m3: APF = 2000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode APF = Assigned Protection Factor Recommendations apply only to National Institute for Occupational Safety and Health (NIOSH) approved respirators. Refer to the NIOSH Pocket Guide to Chemical Hazards for more information. General Hyg…

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# Appendix B to Section 1532.1 Employee Standard Summary (cont.) ## IV. Respiratory Protection -- subsection (f) (cont.) Your employer is required to select respirators as specified in the Respiratory Protection standard, in section 5144(d)(3)(A)1. If your employer selects filtering facepiece respirators for protection against lead, they shall be N100, R100, or P100. Any respirator chosen must be approved by NIOSH under the provisions of 42 CFR part 84. The respirator selection table in section 5144 will enable your employer to choose a type of respirator which will give you a proper amount of protection based on your airborne lead exposure. Your employer may select a type of respirator that provides greater protection than that required by the standard; that is, one recommended for a higher concentration of lead than is present in your workplace. An air-purifying respirator works by removing particles, gases, or vapors from the air you breathe, if the correct type of filter, cartridge, or canister is used with the facepiece. The typical air-purifying respirator is a negative pressure respirator because it requires the force of your inhalation to draw air through the purifying element. A powered air-purifying respirator (PAPR) is much more protective than a typical negative pressure respirator, and may also be more comfortable to wear. A PAPR has a filter, cartridge, or canister to clean the air, and a power source which continuously blows filtered air into your breathing zone. A PAPR may ease the burden of having to wear a negative pressure air-purifying respirator for long periods of time. The standard requires that your employer must provide you with a PAPR upon request. Your employer also must provide high-efficiency particulate air (HEPA) filters for PAPRs and N100, R100, or P100 filters for non-powered air-purifying respirators. In addition, if you are exposed to lead aerosols that cause eye or skin irritation at the use concentrations, your employer must p…