Air, respirators

Pressure-demand full-faeepieee self-eontained breathing apparatus (SCBA) or supplied-air respirator (SAR)... 

Compliance with the written program can be verified during the walkaround by personal observation and employee interviews. If respirators are required to be worn in the workplace or respirators other than dust masks are worn by voluntary users, a written program is required. An overexposure is not required to cite. Discrepancies between the written program and implemented work practices at the worksite should be cited. Use of a elastomeric or supplied-air respirator, even when voluntary on the part of the employee, will require the employer to include all elements in a written program that will make sure that there is proper use of these respirators so that they do not create a hazard. 

IDLH Immediately Dangerous to Life or Health levels indicate that exposure to the listed concentrations of airborne contaminants is likely to cause death, immediate or delayed permanent adverse health effects, or prevent escape from the contaminated environment in a short period of time, typically 30 min or less. These values constitute a hazardous materials emergency in the workplace and require the use of a supplier air respirator (e.g., SCBA). 

MSA Home Page 2000, Air-purifying Respirators, Conventionally Maintained, Replacement Canisters for Gas Masks. 4MSA Home Page 2000, Supplied Air Respirators, Self-Contained Breathing Apparatus. 

A NIOSH/MSHA approved pressure demand full face piece SCBA or supplied air respirators with escape air cylinder may be used. Alternatively, a full face piece, chemical canister air-purifying protective mask is acceptable for this purpose (See DA Pam 385-61 for determination of appropriate level. 

A NIOSH/MSHA approved pressure demand full facepiece SCBA or supplied air respirator with escape air cylinder may be used. 

RESPIRATORY PROTECTION CONCENTRATION RESPIRATORY PROTECTIVE EQUIPMENT < 5.2 (as mixture i.e., 3.7 mg/m3 DETA and 1.5 mg/m3 EGME)NIOSH approved full face piece respirators with an organic vapor canister will be on hand for escape. (M9, M17, M40 series gas masks are acceptable for this purpose. Other masks certified as equivalent maybe used.) NIOSH approved escape type SCBA can also be used >5.2 or concentration unknownNIOSH approved full face piece pressure demand SCBA. Or NIOSH approved full-face piece positive pressure, supplied-air respirators with auxiliary SCBA... 

Exposure limits Potential occupational carcinogen. Given that no standards have been established, NIOSH (1997) recommends the most reliable and protective respirators be used, i.e., a self-contained breathing apparatus that has a full facepiece and is operated under positive-pressure or a supplied-air respirator that has a full facepiece and is operated under pressure-demand or under positive-pressure in combination with a self-contained breathing apparatus operated under... 

Respirators come in two primary types air supplied or air purifying. Air supplied respirators provide the user with an external supply of clean breathing air, while air purifying respirators make use of adsorbents and fillers to remove chemical vapors and particulate from the air. Respirators are generally required where solvent or dust levels are high, where irritating odors are present, and where materials that are respiratory sensitizers are common. 

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. 

This type of respirator supplies clean air from cylinders that you carry, usually on your back. This lets you move more freely and over a wider area than you can with a supplied-air respirator. Get training from competent instructors before using any type of respiratory protection, especially self-contained breathing equipment. These devices contain a limited air supply (usually about 30 minutes), which may be used up even more quickly in high temperatures or with excessive exertion. Figure 6.13 shows the different air-supplying respirators, the airline and self-contained breathing apparatus. 

For inhalation exposure, the patient should be removed from fumes into fresh air. Respirations should be established along with the creation of an artificial airway if necessary. If cough or difficulty in breathing develops and is not relieved by the fresh air, the patient should be evaluated for respiratory irritation, bronchitis, or pneumonitis in a health care facility. 

Positive pressure, fuU face-piece self-contained breathing apparatus (SCBA), or positive pressure supplied air respirator with escape SCBA, approved by the National Institute for Occupational Safety and Health (NIOSH)... 

SCBA or positive pressure supplied air respirator with escape... 

Respirators provide protection against inhaling harmful materials. Different types of respirators may be used depending on the level of protection desired. For example, supplied-air respirators (e.g., a self-contained breathing apparatus) may be required in situations where the presence of highly toxic substances is known or suspected and/or in confined spaces where it is likely that toxic vapors may accumulate. On the other hand, a full-face or half-face air-purifying respirator may be used in situations where measured air concentrations of identified substances will be reduced by the respirator below the substance s threshold limit value (TLV) and the concentration is within the service limit of the respirator (i.e., that provided by the canister). 

Self Contained Breathing Apparatus (SCBA) Where toxic contaminants or levels are unknown, the material has poor warning properties, or the atmosphere is at or has exceeded IDLH limits, SCBA is required. An IDLH atmosphere is one where conditions pose an immediate threat to life or health or conditions that pose an immediate threat to severe exposure or contamination. If an atmosphere exceeds IDLH level, the only respiratory protection method allowed is SCBA. SCBAs are one form of supplied air respirators. 

Guideline value in drinking water for aesfiietic quality Recommended exposure limit in workplace air - respirable manganese particles... 

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