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This is a failed shaft that came out of a pump in a paper mill. The pump was only in service for about a month before it failed unexpectedly.
From the top view above, identify the type of failure pattern that you see from the fractured surface(s). If you need more info to make your assessment, just ask.
Materials management for maintenance purposes is often a big mess. When I visit operations (doesn’t matter what industry) I often hear complaints from maintainers that they cannot get the parts they need, when they need them. Sometimes, their supply chain (warehouse, inventory, and purchasing management) are indeed a mess, but more often than not maintenance planning is also a mess, and there is usually (almost always) a lack of integration between planning and supply chain.
The initial journey to create “sustained success” got off to a difficult start in 1987 when the intent was for quality managers to implement ISO 9004 followed by ISO 9001 for certification purposes. ISO 9004 was viewed as being associated with TQM. The extra work that was needed to fulfill TQM led organizations to use ISO 9001:1987 alone to certify their processes.
“Everything’s computerized now. The backyard mechanic is a thing of the past!”, I recall my father declaring more than 20 years ago while leaning over the open hood of my mother’s Ford Windstar. He was referring to the relative simplicity of repairing the largely mechanical systems in automobiles from the 1950’s and 60’s versus those of the early 2000’s that were equipped with digital sensors and a central processor. Of course, today’s plug-in EV’s, advanced driver assist systems, 360-degree cameras, and “guardians” like General Motors’ OnStar make my mom’s old minivan look like an Anglia in comparison.
When applied properly, SPC provides manufacturers a proven method to increase profitability and achieve a deeper understanding of their processes.. Additionally, SPC can prevent problems—saving companies money that would have been lost in scrap, rework, warranty, litigation, and market share decline. A key factor in obtaining these SPC benefits is the proper deployment of control charts. Correctly designed control charts identify significant changes to a process. These can be changes that are still within specification, but are statistically different than where the process was previously running. By identifying the changes, personnel can determine what caused the change and potentially improve the process or prevent the production of inferior products. [Read more…]
We will create a reorder point analysis file from scratch with simple CMMS data as our starting point. Learn how to create a file which will update automatically each time CMMS data is updated.
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The ASQ Reliability Division (RD), copyrighted the 2003 monograph “Credible Reliability Prediction” (CRP) but lost all copies circa 2014. I pestered the RD to let me republish CRP, because people asked “How do I make credible reliability predictions?” Copyright reversion to authors is accepted practice when a publisher no longer supports a document.
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The new deepwater expansion joint design meets company requirements for factors of safety but cannot comply with ASME Section VIII load factors. How does the OEM engineering manager proceed?
I often start teaching my reliability engineering courses … by focusing on other reliability engineering courses. Why? Because they exemplify what is wrong with how most ‘reliability experts’ go about convincing others to take reliability seriously.
A typical reliability engineering course will start with images of disaster. A Chernobyl here. A Fukushima there. A crashed airplane. The Tacoma Narrows Bridge. Lots of other atrocities that happen when we don’t do reliability engineering properly.
Where does ‘failure’ come from? Why do some things not go as we planned? When bad things happen, at that time, it can be chaotic and appear very complex. Often, in hindsight (when the urgency has faded), we find that good people made bad decisions at that time. Most of the time such failures were not complicated and we find that most likely, anyone else put in the same position, would have made the same decision. So why do things not always go as planned?
How many times has an asset been installed or commissioned, only to have it fail in a few days or months when it should have lasted even longer? If you look at the study by Nowlan & Heap, they have found that only 11% of failures are age related, so when is happening with these assets? The answer… comes down to poor installation practices.
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From demonstrating compliance and ensuring safety to maintaining assets and increasing productivity, food manufacturing maintenance managers have their work cut out for them. Thankfully, computerized maintenance management software (CMMS) can streamline processes and improve maintenance operations for the food manufacturing industry. Read on to learn how food manufacturing CMMS software can significantly benefit your organization.
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Today, there is a lot of attention and discussion regarding future work. How will new technology impacts jobs? What will it look like? What jobs will be eliminated? What will the future jobs look like? How should I prepare?
It is difficult to identify with any accuracy what jobs will be eliminated and what new jobs will be available. My advice is to focus on skills. What skills will help ensure job security in the future? This is the real question.
Like the human body, our plant and mobile equipment will break down if it’s not looked after. If we exercise and push ourselves harder, we gain strength. Unlike our biological bodies that can self-repair, our physical plants and mobile equipment do NOT strengthen if we overload them. Yes, they will tolerate some abuse but not for long. Machinery, unlike biological organisms, can not recover from damage on its own. It needs a bit of basic care. Basic care is all about taking care of our physical assets so they continue to do what we need them to do. Take care of their fluids (e.g.: oils, coolants), keep them from running hot (e.g.: clean heat transfer surfaces like cooling fins), and keep them free of contaminants that damage their insides (e.g.: keep moisture and dirt out). In the “Uptime Pyramid of Excellence,” the pinnacle is “Choosing Excellence”. That choice implies an active application of all of the model’s components. It’s a journey, not a destination.
In this week’s article entry, we discuss some guidelines for conducting an experiment. As we discussed in an earlier post, planning the study is critical for a successful outcome. A good plan makes the conduct of the study straightforward.
Below are some key aspects of conducting the study: [Read more…]
