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Exercise 1: If a hazard should go through three independent barriers to be exposed, and the probability
of each barrier to fail is 0.001, and the consequence of hazard exposure is 3,000 cancer-deaths, estimate
the risk due to this hazard. Draw an event tree to present all possible scenarios for the situation.
Exercise 2: Develop a fault tree for the following block diagram system:
a) Assume all component failure modes can be represented by a single basic event failure (For
example, A means failure of “Component A” under all failure modes).
b) Determine the cut sets of this fault tree using the Boolean substitution technique.
c) Derive the path sets from the cut sets in (b).
Exercise 3: The system shown below discharges gas from a reservoir into a pressure tank. Document Preview:

Risk Management in Engineering (49006) Exam Sample Questions Exercise 1: If a hazard should go through three independent barriers to be exposed, and the probability of each barrier to fail is 0.001, and the consequence of hazard exposure is 3,000 cancer-deaths, estimate the risk due to this hazard. Draw an event tree to present all possible scenarios for the situation. Exercise 2: Develop a fault tree for the following block diagram system: a) Assume all component failure modes can be represented by a single basic event failure (For example, A means failure of “Component A” under all failure modes). b) Determine the cut sets of this fault tree using the Boolean substitution technique. c) Derive the path sets from the cut sets in (b). Exercise 3: The system shown below discharges gas from a reservoir into a pressure tank. The switch is normally closed, and the pumping cycle is initiated by an operator who manually resets the timer. The timer contact closes and the pumping starts. Later (well before any over-pressure condition can exist) the timer times out and the timer contact opens. Current to the pump cuts off and 1 | P a g eRisk Management in Engineering (49006) Exam Sample Questions pumping ceases, to prevent a tank rupture due to over-pressure. If the timer contact does not open the operator is instructed to observe the pressure gauge and to open the manual switch, thus causing the pump to stop. Even if the timer and operator both fail, over-pressure can be relieved by the relief valve. An undesired event, from a risk viewpoint is a pressure tank rupture by over-pressure. Assume there is no wire, pipe, and tank failure. a) Develop scenarios leading to over-pressure through an event tree. The scenarios all start by the initiating event “pump overrun” and followed by functional requirements “operator shutdown”, and “pressure protection”. For each scenario describe the consequence including tank rupture or no effect. b)…

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Exam-Sample-Q….pdf