North Carolina Building Contractor License Practice Exam

Compressed air should be reduced to what PSI or less before being used for cleaning purposes?

1. 20 PSI

2. 30 PSI

3. 40 PSI

4. 50 PSI

The correct answer is: 30 PSI

For cleaning purposes, compressed air should be reduced to no more than 30 PSI. This limit is established to ensure safety while using compressed air for cleaning tasks, thereby minimizing the risk of injury. Excessive air pressure can propel particles at dangerous speeds, posing a threat to the operator as well as to nearby individuals. Furthermore, lower pressure is less likely to dislodge heavy debris or materials that could cause harm. The choice of 30 PSI aligns with safety standards and guidelines in various industries, emphasizing the importance of using compressed air responsibly to prevent accidents. It is vital for workers to be aware of and adhere to these pressure limits to maintain a safe working environment.