Self Contained Breathing Apparatus

Self-contained respiratory devices do not obtain air from the outside ambient atmosphere. In this case, the person is independent of the composition of the ambient air. The use of self-contained apparatus is especially recommended for 

Because of the greatly differing properties of the various respirator systems, the best-fitting respirator should always be chosen for the specific purpose. Whereas systems that are not easily portable restrict a person s movements, freely portable devices have restrictions in respect of use areas. As well as the hmited reservoir of 

Fresh air pressure hose devices with blower 

With control valve With diving apparatus 

With compressed air With compressed air with over pressure cartridge 

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Even small spills and leaks (<0.45 kg) require extreme caution. Unless the spill is contained in a fume hood, do not remain in or enter the area unless equipped with full protective equipment and clothing. Self-contained breathing apparatus should be used if the odor of acrolein or eye irritation is sensed. Small spills may be covered with absorbant, treated with aqueous alkalies, and flushed with water. 

Exposure to formic acid vapor causes irritation of the eyes and respiratory tract. The TLV/TWA occupational exposure limit is 5 ppm (40). Self-contained breathing apparatus should be used when there is a risk of exposure to high vapor concentrations. 

Alkylamiaes are toxic. Both the Hquids and vapors can cause severe irritations to mucous membranes, eyes, and skin. Protective butyl mbber gloves, aprons, chemical face shields, and self-contained breathing apparatus should be used by aH personnel handling alkylamiaes. Amines are flammable and the lower mol wt alkylamiaes with high vapor pressures at ordiaary temperatures have low flash poiats. Amines should be handled ia weH-veatilated areas only after eliminating potential sources of ignition. 

Prevention of carbon monoxide poisoning is best accompHshed by providing good ventilation where contamination is a problem. If good ventilation is not possible, a self-contained breathing apparatus, such as a Scott Air-Pak, must be used. The use of gas masks containing an adsorbent is generally not recommended since it is difficult to know when the adsorbent is exhausted. 

Flammability = 4, ie, very flammable gas, very volatile, and materials that in the form of dusts or mists form explosive mixtures when dispersed in air Health = 2, ie, hazardous to health, but may be entered freely with self-contained breathing apparatus Reactivity = 0, ie, is normally stable when under fire-exposure conditions and is not reactive with water... 

Personal Protective Equipment. Personal protective and emergency safety equipment should not be reHed on as the primary protection from aHyl chloride. Prevention of exposure should be considered the preferred precautionary measure. Where the exposure guideline may be gready exceeded, an approved positive-pressure air suppHed or self-contained breathing apparatus with fuH facepiece should be used (51). 

Are emergency self-contained breathing apparatus (SCBA) or escape air packs available in the work areas involved m the ABC Co. processing ... 

Protective clothing, goggles, face shields, hard hats, work gloves, rubber gloves, aprons, hoods, gas masks (with spare canisters), and self-contained breathing apparatus on hand... 

The special precautions appropriate for entry into confined spaces are summarized in Chapter 13. In fires, evacuation of burning buildings, prohibition on re-entry and the use of self-contained breathing apparatus by fire-fighters are key precautions. 

Use approved personal protection as appropriate, including self-contained breathing apparatus and associated training. 

When the p>ertincnt factors have been considered and a decision has been reached to proceed with a rescue, all reasonable protective measures should be taken by rescuers. Response personnel should use positive pressure. Self Contained Breathing Apparatus (SCBA) and aveiilable protective clothing while working as quickly as possible to minimize their exposure to the toxic materials. 

Materials hazardous to health, but areas may be entered freely with full-faced mask self-contained breathing apparatus which provides eye protection. 

Materials only slightly heizardous to health. It may be desirable to wear self-contained breathing apparatus. 

Health Hazards Information - Recommended Personal Protective Equipment Chemical safety goggles and full face shield, self-contained breathing apparatus (SCBA), positive pressure hose mask, airline mask rubber safety shoes, chemical protective clothing Symptoms Following Exposure Inhalation causes irritation of nose and throat, a feeling of pressure in the chest, and shortness of breath. Nausea... 

Health Hazards Information - Recommended Personal Protective Equipment Self-contained breathing apparatus complete protective clothing safety glasses face shield Symptoms Following Exposure Inhalation causes severe irritation of upper respiratory system. Contact with liquid or vapor causes severe bums of eyes and can cause ulcers and blindness. Contact with skin causes severe burns. Ingestion causes severe burns of mucous membranes General Treatment for Exposure Get immediate... 

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