Accendo Reliability

Your Reliability Engineering Professional Development Site

Home » Articles » Page 18

Articles

Find all articles across all article series listed in reverse chronological order.

by Leave a Comment

Component Health Monitoring for Huge Equipment Reliability Improvement

Component Health Monitoring for Huge Equipment Reliability Improvement

 Change to Component Health Monitoring for Massive Equipment Reliability Improvement. Many condition monitoring (CM) techniques require that your machines and equipment reach a near failed state before they detect the symptoms of failure. This guarantees that you will have many machines in your operation always near-to-failure. Outstanding reliability instead requires you to create the conditions of long-lasting machinery health and to ensure those conditions are always present. As a consequence of having a machine health improvement focus you proactively cause equipment wellness in your operation and thereby create huge reliability growth.

[Read more…]

by Leave a Comment

Risk Culture Does Not Exist: It’s All About Risk Maturity

Risk Culture Does Not Exist: It’s All About Risk Maturity

Guest Post by Patrick Ow (first posted on CERM ® RISK INSIGHTS – reposted here with permission)


Interest in risk culture has been growing since the 2008 Global Financial Crisis. It is a topic that is getting more and more spotlight.

Regulatory authorities are demanding that financial institutions improve their ‘risk culture’. Workplace health and safety authorities are urging organisations to improve their ‘safety culture’. Everyone is talking about having a ‘customer experience culture’. And the list goes on.

[Read more…]

by Leave a Comment

How to Avoid RCM Failure

How to Avoid RCM Failure

Key Lesson for Success in Reliability Centered Maintenance

Why Do Reliability Centered Maintenance (RCM) Analyses Fail?

Hi everyone, I’m Nancy Regan, and in today’s video, I’m coming to you from the ancient ruins of Chichen Itza in Mexico! Standing in front of the “ball game” court, I’m reminded of one of the biggest reasons why Reliability Centered Maintenance (RCM) analyses often fail.

Just like trying to learn everything about this historic site in a few minutes, many organizations attempt to implement RCM after reading a book or taking a quick course, without truly understanding the process. In this video, I explain why having a deep understanding of RCM is crucial to carrying out a successful analysis—and how going into too little or too much detail can cause problems.

[Read more…]

by Leave a Comment

Covid-19 RT-PCR Test, Confusion Matrix and International Travel

Covid-19 RT-PCR Test, Confusion Matrix and International Travel

Dear friends, This is Hemant Urdhwareshe! I am uploading this video, which is different from our other videos! In this video, I have explained the “Confusion Matrix” and related terms such as Sensitivity, Specificity, Accuracy with reference to RT-PCR Test to detect Covid-19 infection. I and my son were isolated for Covid-19 as I was detected Covid-19 positive before my return travel and then isolated for about a fortnight in Egypt! This video is a result of my experience and review of travel rules! I am sure you will find this interesting and thought-provoking!

[Read more…]

by Leave a Comment

Linking Reliability Concepts and Safety Performance

Linking Reliability Concepts and Safety Performance

Definition of Reliability

The concept of Reliability is often misused, misunderstood, and misinterpreted. Reliability in its academic root, is defined as the probability that a system will perform its intended function in a specified mission time and within specific process conditions. So, it is in essence a probability.

The time variable is crucial in calculating the reliability of a system. Reliability is the Probability of Success. And 1 minus the Probability of Failure.

$$ \displaystyle \large R\left(t\right) = 1 – F\left(t\right) \:\:\:\: (where \: F = Failure \: Probability) $$

[Read more…]

by Leave a Comment

Power-law vs. Exponential Acceleration Models

Power-law vs. Exponential Acceleration Models

Making the Right Choice in Reliability Engineering

In reliability engineering, we often need to extrapolate test data collected under accelerated stress conditions to predict performance under normal operating conditions. Two mathematical models commonly used for this purpose are the power-law model and the exponential model. But which one should you choose when your data fits both models equally well? This article explores the differences between these models and provides practical guidance on making this critical decision.

[Read more…]

by Leave a Comment

5 Reasons Rate of Change is Important

5 Reasons Rate of Change is Important

A simplifying assumption associated with using MTTF or MTBF implies a constant hazard rate. Some assume we’re in the useful life section of the bathtub curve. Others do not understand what assumptions they are making.

Using MTTF or MTBF has many problems and as regular reader here know, we should avoid using these metrics.

By using MTTF or MTBF we also lose information. We are unable to measure or track the rate of change of our equipment or system’s failure rates (hazard rate). The simple average is just an average and does not contain the essential information we need to make decisions.

Let’s explore five different reasons the rate of change of a failure rate is important to measure and track. [Read more…]

by Leave a Comment

FMEA Quality Objective 2: SCOPE

“If you don’t know where you are going, you’ll end up someplace else.” – Yogi Berra

As summarized in the first article in this series, “New Series – The Quality of FMEAs,” each month, I will write an article focusing on one of the 14 FMEA Quality Objectives. The intent is to provide insights and application tips for evaluating how well an FMEA meets the quality objectives. By learning to apply FMEA quality objectives, you can help to ensure that product designs and manufacturing processes are safe and reliable. If you didn’t read the introductory article, now is a good time to read it, since it explains FMEA Quality Objectives, and how they are used to create high-quality FMEAs.

In this article, I will outline how to evaluate an individual FMEA against the FMEA Quality Objective for Scope. [Read more…]

by Leave a Comment

Big Difference in Consequence Reduction Strategy and Chance Reduction Strategy

Big Difference in Consequence Reduction Strategy and Chance Reduction Strategy

The vital difference between using consequence or chance reduction strategies if you want operational excellence results, is consequence reduction requires repairs and maintenance, whereas chance reduction removes repairs and maintenance.

In reading “Enterprise Asset Management Success the Plant Wellness Way for CEOs and Senior Executives” I was interested in your table on page 15 that showed risk based inspection and condition based monitoring techniques as consequence reduction strategies.

My understanding is that both RBI and CBM are specifically designed to prevent failure through reducing the likelihood of failure i.e. by detecting failure before it happens within timescales that allow mitigation action to be taken. In the API 581 RBI standard, consequence is treated as a constant over time so the methodology specifically targets risk reduction through more effective inspection or design changes. [Read more…]

by Leave a Comment

Mental Risk: Solitude is Pleasant: Loneliness is Not

Mental Risk: Solitude is Pleasant: Loneliness is Not

Guest Post by Bill Pomfret (first posted on CERM ® RISK INSIGHTS – reposted here with permission)

Mental Health Awareness week is fast approaching. This year [2022] it is from 9th-15th May, and the theme is Loneliness, Anna Neagle is right, in her book Cultivating and being happy in our own company is important, but even the most introverted among us benefit from human connection and where increasingly people have started working from home, or in a hybrid home/workplace setting, we need to proactively seek that connection out.  Connection can be with our close circle, or even from small talk with strangers the research shows that both are helpful for our well-being. [Read more…]

by Leave a Comment

How Defining Functions Shapes Your Reliability Strategy

How Defining Functions Shapes Your Reliability Strategy

Understanding RCM

Hi everyone, I’m Nancy Regan, and in today’s video, I’m breaking down what makes Reliability Centered Maintenance truly “Centered.” Using a real-life example from my own vehicle—where my fan only works on level four, causing all sorts of noise issues—I explain how defining the function of an asset is the key to understanding its reliability needs.

I walk through how writing Functions is the foundation of the RCM process, ensuring assets are maintained to meet the specific needs of their operating context. From there, I explain how this noisy fan failure creates non-operational consequences in my case, and why, in this situation, it’s okay to run this particular Failure Mode to failure. What does the “Centered” in Reliability Centered Maintenance mean? Watch to find out!

[Read more…]