Cooperative Personnel Services Firefighter (CPS) Practice Exam

The KST value, which measures the explosibility of dust, plays a crucial role in classifying dust hazards. When the KST value falls between 0 and 200, it indicates that the dust poses a relatively lower explosibility risk compared to higher ranges. In this context, dust class 1 is defined as having a KST value within this specific range, suggesting it has a certain level of explosibility but is not as extreme as the classifications for higher KST values. Understanding these classifications is vital for fire safety and regulation compliance in environments where dust accumulation could lead to hazardous situations.