Cooperative Personnel Services Firefighter (CPS) Practice Exam 2025 - Free Firefighter Exam Questions and Study Guide

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What dust class designation applies when KST is between 200 and 300?

Dust class 0

Dust class 1

Dust class 2

When determining the dust class designation based on the KST value, it’s essential to understand what KST represents. KST is a characteristic value of the dust and indicates its explosibility. Based on the KST classification system, a KST value ranging from 200 to 300 correlates to a specific category of dust explosibility.

Dust class 2 is designated for dusts that have a KST value falling within that range. This means that substances classified under dust class 2 can pose a moderate risk of explosion if they become airborne and are exposed to an ignition source. Understanding these classifications is crucial for safety and handling procedures in environments where combustible dust may be present.

Recognizing the KST values and their respective dust classes is vital for professionals in fire safety and prevention, as it directly influences the measures taken to mitigate risks associated with combustible dust explosions.

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Dust class 3

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