In case of misfires, AN-FO shall be ______ and a new primer shall be placed to reblast the hole.

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $24.99Unlock all

Prepare for the Mine Safety DAO 2000-98 Test. Study with flashcards and multiple-choice questions, each with hints and explanations. Get ready to pass!

Multiple Choice

In case of misfires, AN-FO shall be ______ and a new primer shall be placed to reblast the hole.

Explanation:
When a shot misfires, safety hinges on reducing the risk of accidental initiation in the misfired hole. For ANFO, the safest approach is to wash the hole with water before placing a new primer and reblasting. Water cooling dampens any unignited material and lowers its sensitivity, while also flushing out dry residues that could ignite from friction or heat. After the hole is wetted, a fresh primer is installed and the reblast is performed. Removing the charge with pliers can trigger detonation, leaving it in place still poses risk, and covering with soil doesn’t neutralize the residual energy or reliably prevent ignition.

When a shot misfires, safety hinges on reducing the risk of accidental initiation in the misfired hole. For ANFO, the safest approach is to wash the hole with water before placing a new primer and reblasting. Water cooling dampens any unignited material and lowers its sensitivity, while also flushing out dry residues that could ignite from friction or heat. After the hole is wetted, a fresh primer is installed and the reblast is performed. Removing the charge with pliers can trigger detonation, leaving it in place still poses risk, and covering with soil doesn’t neutralize the residual energy or reliably prevent ignition.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy