Assignments for Submission

Assignments
for Submission

Assignment
2

Due
date:
8 May 2020 midnight – Week 8

Worth: 15%

The
assignment consists of the following 4 tasks. Each task carries equal
marks.

1. Prepare
a summary of your notes to demonstrate that you have understood,
on the one hand, the distinctions between reliability, availability,
maintainability, trade‑off analysis, and sensitivity analysis
and, on the other hand, the relationships between them. There is
often a wide variation in the understanding of these terms and you
must be able to define and describe them. Pay particular attention to
illustrating that you have understood the definitions as well as the
derivations of the various related graphs presented in O’Connor,
Patton and the other resources. Include relevant equations and
discuss them. Your summary should comment on the extent to which
these elements impact on life-cycle costs.

Hint: The
best way of demonstrating understanding is for you to illustrate your
work with examples from your own organisation, highlighting the
assumptions you have had to make.

2. The
common definition for reliability is “The probability that an item
will perform a required function without failure under stated
conditions for a period of time”. A farmer needs to pump water from
an underground water source to water stock. He has a choice of a
windmill, solar panels or diesel powered pump. He needs a reliable
water supply. Using the common definition for reliability, compare
the three options and which one would you consider to be the most
reliable to perform the function. Identify any relevant conditions or
constraints.

3. A
regional community hospital is considering a backup power supply in
case of power failure. To help with the selection process a
reliability prediction and forecasting study is required. Describe
what you would want to include in a model so that the correct method
could be chosen to model and predict the reliability of the power
supply.

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