OSHA 30 Hour Construction Program Practice Test

What is the minimum length requirement for a safety fuse used in blasting?

1. 20 inches

2. 25 inches

3. 30 inches

4. 35 inches

The correct answer is: 30 inches

The correct answer is 30 inches, which aligns with the safety standards set forth in regulations regarding blasting operations. The minimum length requirement for a safety fuse serves several important functions in ensuring safety during blasting. A 30-inch safety fuse provides sufficient length to allow the operator to maintain a safe distance from the blast site while still being able to light the fuse. This distance is critical because it minimizes the risk of injury from the blast itself. Moreover, the specific length helps ensure that there is enough ignition time before the explosion occurs, allowing for adequate preparation and a clear escape path for personnel involved in the operation. Other lengths, such as those under 30 inches, may not allow enough time for safety measures to be effectively implemented, increasing the risk of accidents and injuries. Therefore, the regulation specifies a minimum length of 30 inches to prioritize safety and ensure compliance with the best practices in the field.