Your Reliability Engineering Professional Development Site
Find all articles across all article series listed in reverse chronological order.
Ask people involved with the design and manufacture of a product the following question: “What is Quality?” Many if not most of the responses will be some form of the following: “Quality is ensuring that our products meet the customer (or engineering) specifications. Unfortunately, this leads to a “conformance to specifications” or a “Product Control” approach to quality. [Read more…]
Would you like the reliability of all your products and their service parts, without assumptions, in real environments, and with all premature failures, complaints, repairs, warranty expirations, preventive maintenance, changes, warranty extensions, etc.? Field reliability tells what really happens! [Read more…]
The way we think and act concerning creating a reliable product or system defines the reliability culture of an origination. I trust your organization doesn’t complete the design then ask the reliability folks to ‘add the reliability element’ or ‘test to prove it’s reliable enough’.
Another ineffective approach is to perform many reliability-related tasks, like a design FMEA, HALT, ALT, derating, margin and environmental testing, life testing, demonstration testing, etc More is not better. If the focus is just doing the list of tasks, with little information acted upon, then this approach is little more than a waste of resources.
So, what is it that makes a wonderful design for reliability program? It’s not expecting the reliability team to do it on their own, nor is it checking off a long list of tasks. It is the focus across the organization, inside and outside the design and development team, that each decision made has an impact on reliability performance. As such, the work of the DfR program is to enable each decision to be well informed concerning the potential impact to reliability involved with the pending decision. [Read more…]
Let’s say that someone has decided they want to get better at something. Perhaps they want to lose weight. Perhaps they want to learn a language. Perhaps they want to learn to play the guitar.
The next thing they might do is find an expert who can help them. A personal trainer. A linguist. A music teacher. They then go and find their expert. But … in the very first meeting, they tell their expert:
‘Just so you know, I am NOT going to (1) stop eating hamburgers, (2) do homework or (3) practice playing.’ [Read more…]
Traditionally RCA is only utilized after an event has occurred, so how can one call it proactive? This perception is explored through trying to understand the current paradigms that exist about RCA, what it is and when it is used. Do we really have to wait for an undesirable outcome to occur in order to use RCA? [Read more…]
Oftentimes, plans and strategies are developed and implemented. Many times the implementation is handed off and the team left on their own to implement. And many of the times, the implementation fails or the results are not delivered.
Why is this? It is because there is a lack of governance and accountability. These are more than just words. They are a system, process and a sense of ownership throughout the organization to ensure that the plan is implemented and any roadblocks are dealt with. [Read more…]
These are challenging economic times and opportunities abound with many of our customers to add new business value. They are turning to us and asking: “You’ve brought great value to our Reliability Centered Maintenance (RCM-R) program through knowledge capture, personnel education, laying the foundation for a ‘living’ maintenance program and so on. However, what additional value can you provide us beyond what you have already done?” One answer: “Focus on writing high-value, asset maintenance tasks. i.e. Tactical PM Program Implementations”. [Read more…]
Only when the tide goes out do you discover who’s been swimming naked.”
– Warren Buffett
The current pandemic has wreaked profound dislocation on businesses throughout the world and upended societal norms as we know them. It may have been an unpredictable, ‘black swan’ event that will not recur anytime soon, though that’s open to discussion, but it’s worth evaluating your risk management practices to see whether you could have done better.
My guess is that, with the exception of a small fraction of companies, risk management is not done particularly well and better (or at least, less-worse) outcomes could have been achieved. [Read more…]
Abraham Lincoln taught the value of adequate preparation when he said, “Give me six hours to chop down a tree and I will spend the first four sharpening the axe.” By nature and training, quality inspectors are focused on verifying the correctness of a product. A traditional inspector at the Lincoln Timber Company might have dutifully marked in her audit log the date and time, the type and size of tree, followed by the comment, “Cut down.”
But Honest Abe would have advised her to take a closer look at the tools and process used to complete the job. [Read more…]
It’s important to make sure you do the right Proactive Maintenance at the right intervals because you can catch things before they become serious failures. How a trip to the vet put it all in perspective for me… [Read more…]
Meaning of Identifiers
K&R
HALT (Highly Accelerated Life Test). There is an opinion that “its name doesn’t do it justice”.
In the first Part “Is the HALT a Life Test or not?” we added the test time to the HALT stress set. We see there is the Life in HALT.
In Part 2 we added knowledge of the lifetime distribution type and a shape parameter (variation). We were able to evaluate the reliability during the warranty time with a given CL by “pulling the lifetime distribution by the tail”. We see HALT may be a quantitative Test. [Read more…]
Nicholas W. Eyrich, Robert E. Quinn, and David P. Fessell published in the Harvard Business Review an article titled “How One Person Can Change the Conscience of an Organization”, dated December 27, 2019. In the article, they discuss how corporate transformations, while assumed to occur from the top-down, actually it is the middle managers and first-line supervisor that can make significant change happen.
They look at what it takes for one person to make a significant change within an organization. As reliability or quality professionals, we often have the opportunity to spot needed changes. It is then up to us to tackle those challenges to make the change happen. [Read more…]
“Number rules the universe.” – Pythagoras
Risk Priority Number (RPN) . . . by definition, a single number that represents relative risk for prioritizing issues in an FMEA. Sounds simple. But, how well does it work in practice? And, is there a better way?
This article highlights shortcomings and concerns when using RPN in FMEA, and discusses an alternative. It is a companion article to “Prioritizing risk for corrective actions in an FMEA.”
Ballistic setting tools (wireline setting tools) have been used for over sixty years to convey downhole packer devices, including frac plugs, into oil and gas wells. The principle of operation is simple: at setting depth, current sent down the electric line ignites the on-board power charge, which burns and liberates high-pressure gas, which displaces a piston over a fixed distance. This creates the mechanical force used for “setting” the frac plug in casing. [Read more…]
Well, we are going COTS, so there is no point creating (or demanding) reliability specifications for it.
Really?
I was just speaking to a couple of engineers – from different organizations – who were coincidentally struggling with the reliability of Commercial Off The Shelf (COTS) systems. COTS is a funny term. Big contractors, governmental organizations and militaries use the term ‘COTS’ a lot. But they tend to be the only ones who do. [Read more…]