Your Reliability Engineering Professional Development Site
Surprisingly, many organization and professionals believe that safety can be achieved by common sense. Here is an excellent article from Kevin Jones’ Safety at Work blog about common sense and safety:
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Organizations can face a wide range of failure problems, ranging from technical to process failures. These common failures include equipment breakdowns, product failure, quality issues, and environmental incidents. These failures typically require a more systematic approach. This involves failure tracking and corrective measures implementation — in comes the FRACAS methodology.
The FRACAS process tracks and manages failures and problems in products or systems. Almost every industry uses this approach. The goal of FRACAS is to uncover the cause of errors and take corrective action to avoid similar occurrences in the future. The process of FRACAS involves failure documentation, conducting failure examination, corrective measures implementation, and continually seeking ways to enhance the process. [Read more…]
Once word got out that I was taking graduate-level courses in statistics, I dreaded the knock on the door. Colleagues, some of which I knew and others from some far reach of the company, would ask if I could take a look at their data. I didn’t learn the necessary first steps with a stack of data in class.
I’ve lost count of the number of data sets I’ve reviewed and analyzed. I know there are important considerations and questions before creating the first plot. Let’s review the essential first steps you should take when presented with data.
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A facilitator leads a group of participants to solutions that are created, understood, and accepted by all. Effective facilitation cannot be achieved without the role of people and social sciences. Understanding Likert scales as a viable technique is necessary to improve qualitative assessments, including risk assessments, condition assessments, and prioritization.
Likert scales were originally developed by Rensis Likert, who was concerned with measuring psychological attitudes and wished to do this in a “scientific” way. Specifically, he sought a method to produce attitude measures that could reasonably be interpreted as measurements on a proper metric scale, such as a thermometer.
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I was recently asked by a product design engineer why their organization struggles with reliability even though they have a very ‘robust’ design process that seemingly has lots of different ‘good’ reliability engineering activities embedded in it. And when I say ‘good’ reliability engineering activities, I mean activities that have (in the past) shown to have a really good impact on reliability.
When I looked at some of this engineer’s processes as summarized by a ‘process flow chart,’ the reason his organization struggled with making reliable products was quite obvious.
The process was so complex that it became the ‘product.’
Do you have a PHB, “Pointy haired boss”? If you’ve seen any Dilbert comics, then you know who I mean. Dilbert is an engineer too. The PHB is oblivious to the reality around him, only interested in how things look, and impossible to get to with Dilbert’s good ideas.
The comic is popular, especially among engineers, for a good reason. Scott Adams (Dilbert’s creator) knew that the technical world is full of frustration because of the relationship that engineers have with their own PHBs. Technicians, supervisors, superintendents, and managers in maintenance and reliability almost always have technical backgrounds. I’d hazard to say that we’ve all had PHBs at some point.
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Two schedule tools are widely used for the Integrated Master Schedule (IMS) around the world to manage projects. The first one is Microsoft Project (MS Project). The second one is Primavera P6. They are both very good. Primavera P6 is an Oracle product originally designed for the construction industry. MS Project is simpler and easier to learn based on my experience. It also costs less than Primavera P6. DOD uses MS Project and typically requires it for use on government contracts. Other industries use one or the other depending on the size and complexity of the project.
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When To Use Stainless And Alloy Steel In Place Of Plastic Or Carbon Steel. There are many times when it is false economy to use carbon steel and plastic items. It is often better to use stainless and alloy steels instead. They last longer and deliver a lower life cycle cost.
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Reliability engineers and quality engineers both work to ensure that products and systems are functioning effectively and efficiently. However, they have slightly different focus areas and goals.
The primary focus of reliability engineering is designing systems that are dependable and able to function consistently over time. This may involve identifying and addressing potential sources of failure, implementing preventive maintenance protocols, and conducting testing to ensure that the system is functioning as intended. The ultimate goal of reliability engineering is to minimize downtime and ensure that the system is available for use when needed.
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Recently, Erik, a reader of this blog directed me to a video his firm has created that explains the role of trees leading to the Buncefield explosion.
Remember the Buncefield incident occurred in oil storage and transport depot. Thus the fuel involved was liquid hydrocarbon. The most probable outcome of a liquid hydrocarbon release is a fire…so it is conceivable that other circumstances such as amount and duration of release and the semi-confinement provided by surroundings may have lead to flame acceleration and increased explosion overpressures.
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Uncertainty is all around us, never more so than today. Whether it concerns a global pandemic, the economy, or your finances, health, and relationships, much of what lies ahead in life remains uncertain.
Nonetheless, life continues. You still must earn a living, take care of the family, house, and car, and walk the dog. All under these new clouds of stress and uncertainty.
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Understanding and Using Human Factors for Human Error Prevention and Mistake Proofing Gets You a Great Safety Advantage
There are many businesses around, even national and international sized companies, who have done an OHS risk assessment for their operations and still have poor workplace safety performance and lousy safety statistics. Clearly they got something seriously wrong when they undertook their operational health and safety (OHS) risk assessment process.
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Imagine observing inputs and outputs of a self-service system, without individual service times. How would you estimate the distribution of service time without following individuals from input to output? The maximum likelihood estimator for an M/G/Infinity self-service-time distribution function from ships and returns counts works for nonstationary arrival process M(t)/G/Infinity self-service systems, under a condition. A constant or linearly increasing arrival (ships) rate satisfies the condition. If you identify outputs by failure mode then you could estimate reliability by failure mode or quantify reliability growth, without life data. [Read more…]
Let’s do a quick recap of where we’ve come from. First we had to figure out where you are on your journey to success, in a totally honest way, which we covered in the chapter of Self-Awareness.
Next we had learned how to hold ourselves accountable for what got us to where we are today. We discussed how to create a personal development plan to map out our different responsibilities in life, what those mean in specific, day-to-day terms, and how to monitor and measure our success on aiming for and achieving those goals.
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In December 2005, fire and explosion at Buncefield oil storage depot injured 40 people. Overfilling of a fuel storage tank (Tank 912) led to release of unleaded gasoline (petrol) which formed a cloud of flammable vapor that subsequently ignited.
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