AL Tunnel Practice Questions - Alabama Tunnel Contractor Examination Exam

Access More Questions

A flammable-gas reading in the underground work area or air return reaches 5 percent or more of the LEL. What is the required immediate action?

Continue mining unchanged; 5 percent is only a recordkeeping note Withdraw everyone above ground and cut all power including ventilation Immediately increase ventilation or otherwise control the gas Begin hot work to burn the gas off

Correct Answer:

Immediately increase ventilation or otherwise control the gas

Access more questions from this quiz

Continue to AL Tunnel Practice Questions - Alabama Tunnel Contractor Examination Exam for more practice questions and the full quiz experience.

Access More Questions