MANU2117: HMAS Westralia Fire: A Case Study of Safety - Engineering Assignment Help

Assignment Task:

Task:

Problem 1: Show that the mean time to failure of a parallel system of n identical components, each with an exponential time to failure with mean 1/λ, is
.

(8 points)
Problem 2). A pump/filter system supplies clean fluid to a production process. The system consists of two subsystems in parallel (S1 and S2), to increase reliability. Each subsystem consists of one pump and a filtering element in series. S1 has one filter as the filtering element. The filtering element of S2 has two filters in parallel. Failure rate of each pump is 2.0 per year (failure time exponentially distributed), and of each filter, 3.0 per year (exponentially distributed), when they operate.
a). Draw the reliability block diagram of the pump/filter system.
b). Calculate the reliability of the system for 12 months of operation.
c) Find Mean Time To Failure (MTTF) of the system.

(6 points)

Problem 3).
a). What are the operational risks in a supply chain network? How do they differ from disruption risks? Explain with appropriate examples.
b). How well are supply chain risks recognised across a network? What can Companies do to enhance supply chain risk management capabilities?

c). A large medical device manufacturer has experienced a number of disruptions to operations and customer service within their supply chain. As a result of this, the supply management team at the company is tasked with creating a framework to better understand the drivers that create supply disruptions and mitigate the risk. How will the team develop a framework for reducing the impact of disruptions to the supply chain?

d). How can the implementation of Supply Chain Risk Management processes be organised within and across companies?

e). How would you reduce risk in the auto parts supply chain which has been threatened?
(Note: No credit will be given if you copy and paste from class lecture notes or other sources. You need to write the answers in your own words).

(8 points)

Problem 4). The current reliability of Complex GA Aircraft Systems is unknown. The ability to gain insight into this unknown will provide the aviation community with a valuable benchmark that will assist in the development of reliability and safety requirements for future aircraft. This benchmark must be established in order to ensure that technology development, design guidelines, and work on certification standards progresses towards the effective goal of affordable technologies for small engine airplanes.

Problem 5).
A). Suppose we would like to own and operate a Motor Boat dealership in the coastal region of Melbourne city. We would sell a range of new motor boats and repair existing boats.
– Define our objectives and develop a business case,
– Decide where it will be – potential location sites,
– Decide on type of business – ownership or franchise, and the feasibility of expanding the business to other coastal cities in Australia,
– Plan for day to day operations from an ILS perspective, including the ten elements discussed in
 class.
– Develop an ILS plan to conduct a Logistics Support Analysis.

(6 points)

b). Explain how design for supportability relates to the following:
(i) design for reliability
(ii) design for maintainability
iii). design for human factors
(3 points)

c). What is Reliability-centred-maintenance (RCM)? Its benefits? How do the results of the RCM relate to the system safety? How can the RCM be used to improve the design?
(3 points)

d). What is LORA? Its purpose? When can it be applied in the system life-cycle? Describe how the results of the LORA and the MTA can impact each other?
(3 points)
(Note: No credit will be given if you copy and paste from class lecture notes or other sources. You need to write the answers in your own words).

Problem 6).
In the Westralia Fire Safety Case Study (available on course web-site) and attached here): (5 Points)
(a). Discuss the role of governance, planning, documentation and operation of maintenance in theWestralia case and the deficiencies related to the mis-handling of these aspects of maintenance.
(b). Elaborate the maintenance and logistics system that you will put in place if you have the opportunity to re-design the support solution for this case.

Summary
On 5 May 98, WESTRALIA sailed from Fleet Base West for the Western Australia Exercise Area to rendezvous with HMA Ships SUCCESS, DARWIN and ADELAIDE. A fire in the main machinery space of WESTRALIA resulted in the loss of the lives of four crew and injuries to several other crew members.

Prior to the ship sailing from Fleet Base West on 5 May 98, WESTRALIA had undergone an assisted maintenance period for about 6 weeks. During this period, members of the ship’s company of WESTRALIA in conjunction with Fleet Intermediate Maintenance Authority and the ship’s contractor, ADI Limited, carried out maintenance work. The work included the fitting of new flexible fuel hoses to the ship’s main engines by a subcontractor under the direction of ADI Limited.

After departing at 0900 on 5 May 98, at about 1030, when about 21⁄2 miles east of the Fairway Buoy in the Deepwater Channel, a fuel leak was noticed in the area of the number 9 cylinder on the inboard side of the port main engine. It was a significant leak, with fuel emerging under pressure in a manner similar to a garden hose.

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