# Top Tips for Probability Analysis

Read on to learn some top tips on how to make sure you are defining and using probability values correctly within a safety or reliability assessment.

# Dr Rachel Knight wins the Egerton Consulting Christmas Quiz

Our congratulations to Dr Rachel Knight of Faiveley Brecknell Willis who is the winner of the Egerton Consulting Christmas Quiz 2016. She receives a £50 Amazon Voucher.

Thank you to everyone who took part in the quiz which we hope you enjoyed. The answers we accepted for each question are given below. Continue reading

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# What is Markov Analysis?

Markov analysis is a method of analysis that can be applied to both repairable and non-repairable types of system. The basic output of a Markov analysis is the average time spent by the system in each of its distinct states before the system moves (or makes a transition) into some other distinct state. For example, such a transition or change of state will occur if the system suffers a component failure or if a repair has been carried out. A distinct change in the state of the system will have taken place in both of these cases.

The output from the Markov analysis enables a complete description of the system to be obtained in terms of its reliability, availability and resource utilisation (e.g. use of maintenance teams, spares holdings, buffers, etc). Also different system designs can be explored by comparing their reliability and availability performances as well as the effect of small tweaks to a given design under consideration. Results produced by a Markov analysis can then be used within a cost-benefit analysis to help identify the optimal design choice. Continue reading

# How to get the most from your HAZOP Workshop

Although extremely valuable in terms of identifying potential hazards associated with a plant’s design and operation, HAZOP studies can be time consuming and resource intensive. We have therefore compiled a list of 10 tips to help HAZOP Workshops run more smoothly and efficiently, thereby ensuring that you get maximum value from your HAZOP. Continue reading

# Amanda Egerton receives President’s Award from SaRS

The Safety and Reliability Society (SaRS) has presented Amanda Egerton with the President’s Award. Given only rarely, this was presented to Amanda on her retirement from the Western Branch Committee for her “outstanding contribution” to the Society. Continue reading

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# 10 Questions To Ask Before Carrying Out A Safety Or Reliability Analysis

Before starting the actual analysis of a Safety or Reliability Study it is important to be sure that you

1. have fully defined the aims and objectives of the Study
2. are considering all of the design or operational features that will have a significant impact on the results of the analysis.

We have therefore put together a list of ten questions which we hope will help you to address each of these areas. Continue reading

# 10 Tips for Event Tree Analysis

Wikipedia describes Event tree analysis (ETA) as “a forward, bottom up, logical modeling technique for both success and failure that explores responses through a single initiating event and lays a path for assessing probabilities of the outcomes and overall system analysis”. However, like many techniques, its benefits rely on it being used properly. Continue reading

# Egerton Consulting announces the Winner of the 2015 Christmas Quiz

Our congratulations to Terry Chivers from Hosier Engineering Consulting Ltd who is the winner of a £50 Amazon Voucher.

Thank you to everyone who took part in Egerton Consulting’s 2015 Christmas Quiz which we hope you enjoyed. In fact, no fully correct set of answers was received among those submitted – Terry submitted the highest number of correct answers. A full set of solutions can be downloaded by clicking on the snow globe below. Continue reading

# A Comparison of Classical and Bayesian Statistics

It is surprising to most people that there could be anything remotely controversial about statistical analysis. Nevertheless appearances can be deceptive, and a fundamental disagreement exists at the very heart of the subject between so-called Classical (also known as Frequentist) and Bayesian statisticians. Continue reading

# Siemens awards contracts to Egerton Consulting for ARM Assessments

Egerton Consulting has been awarded contracts by Siemens to carry out ARM studies of systems being supplied for new waste to energy plants. Continue reading

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