Dear friends, we are happy to release this Part-2 of our videos on Confidence Intervals. In this video, Hemant Urdhwareshe explains how to estimate confidence interval of population mean when population standard deviation sigma is not known In such cases, we need to use Student’s t-distribution instead of normal distribution and Z-Score.
[Read more…]A Big Mistake Organizations Make with Reliability Centered Maintenance
Hi everyone, I’m Nancy Regan, coming to you from The Watermelon Festival in Russellville, Alabama! In today’s video, I share one of the most common mistakes organizations make when it comes to Reliability Centered Maintenance (RCM)—and why this often leads to failed analyses.
Using a simple analogy of growing watermelons, I explain how RCM can go wrong when the right people aren’t involved. Just like watermelons need the right conditions to grow, RCM needs experienced facilitators and equipment experts to ensure the process succeeds.
[Read more…]Systems/Validation Engineering (Part 4)
In this final article of the series, we will cover the right leg of the “V” diagram which illustrates the process of verifying and integrating hardware into the system.
How to Define Proper Product Reliability Goal Video
Defining a proper product reliability goal is a critical step in ensuring that a product meets customer expectations and performs adequately throughout its intended lifespan. This also involves a careful balance between the required level of reliability and the associated costs and complexities of achieving that reliability.
[Read more…]MTBF Use May Reduce Product Reliability
Is MTBF Preventing Your Product From Being Reliable?
MTBF is not reliability. Attaining a specific MTBF does not mean your product is reliable. MTBF use may be the culprit.
Therefore, working to achieve a MTBF value may actually be preventing you from creating a product that mets your customer’s reliability performance expectations.
Actively working to achieve MTBF using the common tools around MTBF may be taking you and your team down the wrong rabbit hole. You may be working to reduce the reliability of your products rather than improving them.
Let’s take a look at a couple of ways the pursuit of MTBF is harmful to your product’s reliability potential and contrary to your customer’s expectations. [Read more…]
What is the Connection between Equipment Risk and Equipment Reliability?
When it comes to Risk we have simplified it so much that we have failed Einstein’s advice, “Everything should be made as simple as possible, but not simpler.” It has been made too simple and missed the connection between risk and reliability.
Equipment risk has a direct impact on equipment reliability. What risks you allow your production plant and equipment to suffer will negatively impact its reliability. About 6 months ago I was playing about with the risk equation and a mathematical connection between risk and reliability revealed itself.
[Read more…]Disengaged and Stressful Workplaces Create Risk for Organizations
Guest Post by Patrick Ow (first posted on CERM ® RISK INSIGHTS – reposted here with permission)
Gallup’s State of the Global Workplace: 2022 Report found that only 21% of employees are engaged at work and 44% of employees experienced a lot of stress on the previous day – both findings are up 1% from 2021.
In one of the largest studies of burnout, Gallup found the biggest source was “unfair treatment at work.” That was followed by an unmanageable workload, unclear communication from managers, lack of manager support and unreasonable time pressure.
Disengagement and stress in workplaces are good indicators of an organisation’s workplace climate. They can also provide insights into potential issues with the organisation’s culture.
[Read more…]“Our World,” a Book for your Children
Here’s one you probably don’t expect from me. A children’s book! “Our World” is intended to spark curiosity In children about the world around them. It asks questions like, where does the water in my shower come from, how does the electricity in my light bulb get there, and many more. It uses everyday childhood experiences to spark questions.
[Read more…]Confidence Interval of Population Mean (Part-1)
Dear friends, we are happy to release this video on confidence interval when population standard deviation is known. This is part-1 of our series on confidence intervals.
[Read more…]Overcoming Challenges in Implementing a CMMS or EAM System
by Paul Crocker, CMRP, CAMA2, VIB1
Implementing a CMMS (Computerized Maintenance Management System) or EAM (Enterprise Asset Management) system can be a complex process fraught with challenges. However, organizations can effectively navigate these hurdles with the right strategies and tools.
[Read more…]How to Assign Preventive Maintenance Intervals with RCM
Hi everyone, I’m Nancy Regan, coming to you from Key Largo, Florida! In today’s video, I’m breaking down how to determine if a preventive maintenance task is the right action to take and how often it should be done, using the principles of Reliability Centered Maintenance (RCM).
I’ll walk you through a simple example—changing the engine oil in my 2014 Subaru Forester—and explain how preventive maintenance task intervals are assigned based on the Useful Life. You’ll learn how to assess the useful life of your assets and decide when to perform a scheduled replacement or a scheduled restoration task. I also demonstrate this using failure pattern B, showing you the conditional probability of failure.
[Read more…]The Power of the Damage-Endurance Model
Unlocking Reliability: The Power of the Damage-Endurance Model in Product Development
Reliability is at the heart of robust product design. Engineers and reliability professionals continuously seek ways to predict, assess, and improve product longevity. One fundamental approach to achieving this is the Damage-Endurance Model, a powerful tool in reliability engineering that helps quantify failure risks and optimize designs.
[Read more…]MTBF is Not a Duration
Despite standing for the ‘time between failures’, MTBF does not represent a duration. Despite having units of hours (months, cycles, etc.), it is not a duration-related metric.
This little misunderstanding seems to cause major problems. [Read more…]
How to Define Proper Product Reliability Goal
Defining a proper product reliability goal is a critical step in ensuring that a product meets customer expectations and performs adequately throughout its intended lifespan. This also involves a careful balance between the required level of reliability and the associated costs and complexities of achieving that reliability.
[Read more…]Equipment Failure Probability Density Functions
Charting historic equipment failure events visually shows the Failure Probability Density Function curve for that equipment. It is also known as a Failure Density Distribution Curve.
VALUE OF A DISTRIBUTION CURVE
Failure Probability Density Function curves, Failure Density Distribution Curves contain useful information about what has happened to equipment. These curves illustrate the chance of failure of an equipment over a period. Here, our fixed variables are the equipment’s components’ material-of-construction and design. As such, the only changing variable is the operating and maintenance strategies, including work processes, used by the company.
[Read more…]