A train is standing on a station ready to leave. The train line out of the station is a single track line, and it is used by trains driving in both directions. Several measures are in place to prevent the train from leaving the station while another train is coming in the opposite direction. The … Read more
For an offshore platform, the following information is provided from a risk analysis: Blowout from a well is one of the main types of accidents that can occur. The frequency per year of a blowout is 0.0012. If a person is present on the platform, the average probability of being killed is 0.25, given that … Read more
Classify the stakeholders identified in the previous problem by using the categories in Section 7.8.1. Stakeholders may be classified in different ways. One such classification is based on the stakeholders’ (i) power, (ii) urgency, and (iii) legitimacy. Stakeholders may alternatively be classified as (Yosie and Herbst 1998): (1) People who are affected directly by a … Read more
You are going to do a risk analysis of a proposed new ship concept with a new type of hybrid machinery that is a combination of a traditional diesel-driven engine and an electrical energy powered by batteries. The electrical engine will be used when there is sufficient power in the batteries, but for the rest … Read more
Failure data has been collected from a number of identical components. Assume that five failures have been observed during an accumulated time in service of 978 850 hours. (a) Find an estimate of the failure rate of the components. (b) What does it mean that the estimator used is unbiased? Provide a careful explanation. (c) … Read more
Reconsider the lifting operations in Example 10.6, but consider the whole operation including the worker onboard the ship, the crane operator, and the worker on the quay who positions the containers and removes the hooks. Note the assumptions you have to make to carry out the analysis. (a) Break down the job into a sequence … Read more
At an airport, there are a number of barriers in place to prevent an aircraft from entering a runway while there is another aircraft about to take off or land. For a collision between two aircraft to happen, all the following barriers must fail: First the pilot should stop at a designated place and wait … Read more
The water chlorination system of a small town has two separate pipelines, each with a pump which supply chlorine to the water at prescribed rates. The two pumps are denoted A and B respectively. During normal operation, both pumps are functioning, and thus are sharing the load. In this case, each pump is operated on … Read more
In a process plant, a crane is being used to lift new equipment to be installed in the plant. The lift consists of the crane wire, the crane hook, and the strap securing the equipment so it can be lifted. Further, the wire is equipped with two braking systems: an engine brake that is normally … Read more
In a process plant, flammable gas that is accidentally released can be detected by an automatic gas detection system or by a process operator working in the area. The process operator can only detect gas if she is present in the area where the gas is released. There are several operators working in the plant, … Read more
