Q. 4 (Accident effect, 25 pts). A machine has a very stable lifetime: it has a c
ID: 1788023 • Letter: Q
Question
Q. 4 (Accident effect, 25 pts). A machine has a very stable lifetime: it has a constant hazard rate = 4. However, a certain accident may occur in the factory after which the hazard rate of the machine increases to the level 2 10. The time T of the acci dent is random and it has the exponential distribution with parameter 7. Therefore, if the accident occurs at time Tu, then the hazard rate function of the machine looks like the following: h(t) 10 0 a. (15) What is the expected lifetime of the machine? h (1o) What is the prohability that the machine stops working before the accident occurs?Explanation / Answer
The process of determining the likelihood and severity of a hazard leads to a determination of the level of safety risk which is also called the:
Answer: Safety risk
The process of determining the level of safety risk of a hazard is called:
Answer: Risk Assessment
ICAO proposes a combination of three methods be used to identify hazards. What are they?
Answer: Reactive, Proactive, and Predictive
Rank the following in order from most to least effective in controlling hazards
Answer:
1 = most effective and 5 = least effective
Provide Safety Devices: 1 (it provides engineering control)
Provide Safety Procedures: 3
Eliminate the Hazard: 1
Provide Warnings or Advisories: 4
Reduce the Hazard Level: 2 (occurrence is not reduced.
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