Podcast
Questions and Answers
Oxygen content can reach dangerous levels in hazardous scenarios, such as incidents involving ______
Oxygen content can reach dangerous levels in hazardous scenarios, such as incidents involving ______
fire
Confined spaces where oxygen content can be dangerous include buildings, manholes, tunnels, chemical tanks, and ______
Confined spaces where oxygen content can be dangerous include buildings, manholes, tunnels, chemical tanks, and ______
oil tanks
Hazardous atmospheres may contain toxic gases or ______
Hazardous atmospheres may contain toxic gases or ______
vapours
The lungs and respiratory tract are more vulnerable to injury from hazardous atmospheres than any other part of the ______
The lungs and respiratory tract are more vulnerable to injury from hazardous atmospheres than any other part of the ______
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Inhaling heated gases may cause oedema (fluid collection) in the ______
Inhaling heated gases may cause oedema (fluid collection) in the ______
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Mine rescue teams use both open‑circuit and closed‑circuit breathing ______
Mine rescue teams use both open‑circuit and closed‑circuit breathing ______
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The W65 self-rescuer will require at least ______ oxygen in the air
The W65 self-rescuer will require at least ______ oxygen in the air
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The W65 self-rescuer will protect the wearer against 1% (10,000 PPM) ______ for one hour
The W65 self-rescuer will protect the wearer against 1% (10,000 PPM) ______ for one hour
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The W65 self-rescuer will generate heat when exposed to higher levels of ______, thereby shortening the unit’s duration
The W65 self-rescuer will generate heat when exposed to higher levels of ______, thereby shortening the unit’s duration
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The W65 self-rescuer must be in a respirable atmosphere before removing the ______
The W65 self-rescuer must be in a respirable atmosphere before removing the ______
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The W65 self-rescuer has a service life of 10 years and a shelf life of 15 years when properly ______
The W65 self-rescuer has a service life of 10 years and a shelf life of 15 years when properly ______
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Oxygen is released by the chemical reaction of moisture from the exhaled breath mixing with the potassium superoxide (KO2). This reaction produces ______
Oxygen is released by the chemical reaction of moisture from the exhaled breath mixing with the potassium superoxide (KO2). This reaction produces ______
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The frequency of hydrostatic testing for a compressed cylinder depends on the material and ______ used.
The frequency of hydrostatic testing for a compressed cylinder depends on the material and ______ used.
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Breathing air cylinders may also be charged directly from an approved breathable air compressor or compressor/storage ______ configuration.
Breathing air cylinders may also be charged directly from an approved breathable air compressor or compressor/storage ______ configuration.
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Hydrostatic testing involves pressurizing a cylinder above its operating pressure to established safety standards to ensure durability of the cylinder over ______.
Hydrostatic testing involves pressurizing a cylinder above its operating pressure to established safety standards to ensure durability of the cylinder over ______.
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In a cascade storage system, several large cylinders are used to bring a small cylinder up to a desired ______.
In a cascade storage system, several large cylinders are used to bring a small cylinder up to a desired ______.
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Oxygen cylinders are recharged by transferring oxygen from large-capacity medical-grade oxygen cylinders via high-pressure ______.
Oxygen cylinders are recharged by transferring oxygen from large-capacity medical-grade oxygen cylinders via high-pressure ______.
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A cascade system may be connected to a purification system and air compressor approved for breathable air (CSA Standard Z-180.100). Breathing air cylinders may also be charged directly from an approved breathable air compressor or compressor/storage tank ______.
A cascade system may be connected to a purification system and air compressor approved for breathable air (CSA Standard Z-180.100). Breathing air cylinders may also be charged directly from an approved breathable air compressor or compressor/storage tank ______.
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A heat exchanger is built into the breathing tube to cool the air before ______
A heat exchanger is built into the breathing tube to cool the air before ______
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A quick‑start system covers the immediate oxygen requirements of the user until the chemical of the canister becomes ______
A quick‑start system covers the immediate oxygen requirements of the user until the chemical of the canister becomes ______
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A number of oxygen generating self-rescuers are available on the market today. Some include: From L-R: Drager Oxy 3000/6000, Drager Oxy SR 90 and CSE Self-Rescuer Long Duration 8-6 CLOSED-CIRCUIT BREATHING APPARATUS (CCBA) (Closed circuit, self-contained, positive pressure, re-breather) A CCBA’s main functions are to absorb carbon dioxide and provide ______
A number of oxygen generating self-rescuers are available on the market today. Some include: From L-R: Drager Oxy 3000/6000, Drager Oxy SR 90 and CSE Self-Rescuer Long Duration 8-6 CLOSED-CIRCUIT BREATHING APPARATUS (CCBA) (Closed circuit, self-contained, positive pressure, re-breather) A CCBA’s main functions are to absorb carbon dioxide and provide ______
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CCBAs also recycle the unused oxygen from the wearer’s exhaled breath. The recycled air is enriched with oxygen from a compressed oxygen cylinder prior to ______
CCBAs also recycle the unused oxygen from the wearer’s exhaled breath. The recycled air is enriched with oxygen from a compressed oxygen cylinder prior to ______
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The positive pressure inside the facepiece protects the wearer from a potentially toxic ______
The positive pressure inside the facepiece protects the wearer from a potentially toxic ______
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Modern CCBAs maintain positive pressure by using springs on the breathing bag/chamber and a demand valve when the internal volume of oxygen in the system has ______
Modern CCBAs maintain positive pressure by using springs on the breathing bag/chamber and a demand valve when the internal volume of oxygen in the system has ______
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In a self-contained breathing apparatus, breathable air is supplied from a cylinder or released as a product of a chemical reaction that occurs in a component of the apparatus. In an open-circuit apparatus, exhaled air is released into the surrounding atmosphere. In a closed-circuit apparatus, exhaled air is recirculated within the system. Positive Pressure versus Negative Pressure The apparatus will deliver breathable oxygen/air to the wearer under ______ pressure.
In a self-contained breathing apparatus, breathable air is supplied from a cylinder or released as a product of a chemical reaction that occurs in a component of the apparatus. In an open-circuit apparatus, exhaled air is released into the surrounding atmosphere. In a closed-circuit apparatus, exhaled air is recirculated within the system. Positive Pressure versus Negative Pressure The apparatus will deliver breathable oxygen/air to the wearer under ______ pressure.
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A positive pressure system will maintain an internal pressure higher than the external pressure. The advantages of positive pressure: Reduces the potential for external atmospheric toxins (smoke, gases) to penetrate into the system, i.e. if the facepiece seal is ______.
A positive pressure system will maintain an internal pressure higher than the external pressure. The advantages of positive pressure: Reduces the potential for external atmospheric toxins (smoke, gases) to penetrate into the system, i.e. if the facepiece seal is ______.
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No added breathing effort is required by the wearer in a positive pressure system as it is ______.
No added breathing effort is required by the wearer in a positive pressure system as it is ______.
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A negative pressure system’s internal pressure is lower than the external ______.
A negative pressure system’s internal pressure is lower than the external ______.
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All makes and models of breathing apparatuses have manufacturer’s instructions for ______ (putting the apparatus on) and doffing (taking the apparatus off).
All makes and models of breathing apparatuses have manufacturer’s instructions for ______ (putting the apparatus on) and doffing (taking the apparatus off).
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Rescuers must train to the manufacturers’ procedures of the models used on their ______.
Rescuers must train to the manufacturers’ procedures of the models used on their ______.
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