#318 – IS MAKING ASSUMPTION SIMILAR TO MAKING MISTAKES – FRED SCHENKELBERG

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Over the past week, I received a couple of interesting questions. One concerned assuming a Weibull beta value for an accelerated life test plan. The second involved assuming expected life models for elements within a reliability block diagram.

In both cases, we faced incomplete data and uncertainties, yet felt the need to assume some values in order for the math to work out. We do make assumptions in order to solve problems. We also can make mistakes that lead to unwanted consequences. Continue reading

#313 – THE VALUE OF A GREAT QUESTION – FRED SCHENKELBERG

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Some time ago, earlier in my career, I worked for a wonderful boss. She would stop by my office on occasion and ask ‘what’s new?’ or “how’s it going?’ Just a check-in. I often let her know about the current vexing problem I was struggling with at the moment.

The funny thing is she never directly solve the problem for me. She certainly could have. Instead, she would ask a couple of questions that always helped me to find the solution. This happened with problems concerning dealing with a difficult person, strange material properties, motivating change within a group, or finding someone that could design and run a computational fluid dynamic model for me. Continue reading

#311 – INFRASTRUCTURE IS NOT A ONE TIME INVESTMENT – FRED SCHENKELBERG

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In a recent blog post, Seth Goin discussed the need for ongoing investment to maintain infrastructure. Whether a road or building or even your own skills, it takes regular care to avoid system failures or obsolesce.

An Act of Maturity

Seth opens his piece with:

If you want to see wisdom and maturity in action, look for someone (or a community) investing in infrastructure before it’s too late.

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#266 – RISK MATRIX AS A COMMUNICATION TOOL – FRED SCHENKELBERG

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Not all risks the same. Some are minor with little consequence, while others are not. Every organization or reliability program facings a plethora of risks and being able to communicate the range of identified risks is helped by using a risk matrix.

The risk matrix is a simple two-dimensional grid that lays out on one access the expected consequence of risk, from minor to catastrophic. The other axis has the likelihood or occurrence of the risk becoming realized, ranging from rare too certain. Continue reading

#259 – WHAT IS RELIABILITY ENGINEERING? – FRED SCHENKELBERG

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One of best features about working in reliability engineering is everything fails, eventually. This fact provides a bit of career stability.

Another aspect I enjoy is the concepts and approaches that create the foundation for reliability engineering knowledge do not change very much over time. The basics of reliability engineering are the same as when the earliest engineers began design structures and products. Continue reading