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GATE 2023 MN – Question 23

Surface Environment, Mine Ventilation and Underground Hazards · Underground Hazards · 1 mark · Multiple choice

Under the DGMS Safety Management Plan risk-ranking method referred to in the paper, how is a hazard risk score computed?

  1. Consequence × Exposure
  2. Consequence × Exposure × Probability
  3. Exposure × Probability
  4. Consequence × Probability

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Show answer and explanation

Correct answer: (B) Consequence × Exposure × Probability

Explanation

The specified method multiplies three ratings: severity of consequence, frequency of exposure and probability of the hazardous event. Thus risk score = C×E×P, option B. A two-factor risk matrix is a different ranking convention and does not retain all three factors asked here.

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