L.P. Book HAZMAT / Lesson #2 Hazardous Material – Ppe | Attempts: 117

2.

Limitations to wearing an SCBA are:

Heavy
Limited air supply
May impair movements in confined space
All of the above

Correct Answer

A. All of the above

Explanation

The correct answer is "All of the above." This means that all of the given options are limitations to wearing an SCBA (Self-Contained Breathing Apparatus). SCBAs are heavy, have a limited air supply, and may impair movements in confined spaces. These limitations can make it challenging for individuals to wear and use SCBAs effectively in certain situations.

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3.

Limitations of Positive-Pressure supplied air respirators (SAR)

Requires supervision – monitoring of air supply
Hose is limited to 300 feet
Not approved for use in atmospheres immediately dangerous to life or health (IDLH) unless equipped with an emergency egress unit
All of the above

Correct Answer

A. All of the above

Explanation

All of the statements mentioned in the options are limitations of positive-pressure supplied air respirators (SAR). First, they require supervision and monitoring of the air supply to ensure that the wearer is receiving sufficient clean air. Second, the hose that supplies the air is limited to a maximum length of 300 feet, which restricts the mobility of the wearer. Lastly, SARs are not approved for use in atmospheres that are immediately dangerous to life or health (IDLH), unless they are equipped with an emergency egress unit. Therefore, all of the above statements are correct and explain the limitations of positive-pressure supplied air respirators.

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4.

Limitations to wearing structural firefighting gear for hazardous materials operations

Not designed to protect from harmful gases, vapors, liquids, or dusts encountered during hazardous materials incidents
Causes diaphoresis for the wearer
Limited heat protection
Both b & c

Correct Answer

A. Not designed to protect from harmful gases, vapors, liquids, or dusts encountered during hazardous materials incidents

Explanation

The correct answer is "Not designed to protect from harmful gases, vapors, liquids, or dusts encountered during hazardous materials incidents." Structural firefighting gear is not specifically designed to provide protection against the hazardous substances typically encountered during hazardous materials incidents. It may not have the necessary barrier properties or filtration capabilities to effectively protect the wearer from harmful gases, vapors, liquids, or dusts. Therefore, relying solely on structural firefighting gear for hazardous materials operations would not provide adequate protection.

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5.

Vapor protective clothing limitations include reduced mobility & vision, heavy & bulky, can’t be used in high temperature atmospheres, and

Can never be re-used
Must be decontaminated before opening
Must always be re-used because of cost
None of the above

Correct Answer

A. Must be decontaminated before opening

Explanation

Vapor protective clothing must be decontaminated before opening to ensure that any hazardous substances or contaminants on the clothing are removed. This is important to prevent the spread of contaminants to the wearer or the environment when the clothing is removed. Failure to decontaminate the clothing before opening could lead to exposure to hazardous substances. Therefore, it is necessary to decontaminate the clothing before opening it.

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6.

High temperature protective clothing

Are designed to provide high degree of protection from radiant heat
Have limited mobility & flexibility
Are used for protection against all types of materials
Both a & b

Correct Answer

A. Both a & b

Explanation

High temperature protective clothing is designed to provide a high degree of protection from radiant heat. This means that it is specifically created to shield the wearer from intense heat sources such as flames or hot surfaces. Additionally, this type of clothing typically has limited mobility and flexibility, which can be attributed to the thick and heavy materials used to provide the necessary protection. Therefore, the correct answer is "Both a & b" because high temperature protective clothing offers protection from radiant heat and also has limited mobility and flexibility.

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L.P. Book HAZMAT / Lesson #2 Hazardous Material – Ppe

Positive pressure breathing apparatus (SCBA)

Quiz Preview

Limitations to wearing an SCBA are:

Limitations of Positive-Pressure supplied air respirators (SAR)

Limitations to wearing structural firefighting gear for hazardous materials operations

Vapor protective clothing limitations include reduced mobility & vision, heavy & bulky, can’t be used in high temperature atmospheres, and

High temperature protective clothing