Indoor Air sciences CSMI Practice Exam

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Prepare for the Indoor Air Sciences CSMI Test. Explore flashcards and multiple-choice questions, all with valuable hints and detailed explanations. Equip yourself for success on your certification journey!

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What is the recommended action for Category 3 ductboard according to IICRC S520?

HEPA vacuum
Remove and replace
Damp wipe
Leave in place

The correct answer is: Remove and replace

The recommended action for Category 3 ductboard according to the IICRC S520 is to remove and replace it. Category 3 is classified as unsanitary, containing materials that may have been contaminated with harmful microorganisms, sewage, or other waste materials. Such contamination poses significant health risks and often cannot be effectively remedied through cleaning methods such as HEPA vacuuming, damp wiping, or leaving the material in place. Additionally, due to the porous nature of ductboard, removal and replacement are necessary to ensure that contaminants do not remain embedded in the material, which could lead to ongoing indoor air quality issues and potential exposure to hazardous substances. This approach aligns with the best practices for maintaining a safe and healthy indoor environment, emphasizing that when contamination is severe, the only viable solution is to eliminate the source altogether.