Your Reliability Engineering Professional Development Site
As long as humans are involved in running our organizations, there will be holes (vulnerabilities) in our cheese. This is why I state that we will never have American cheese (no holes) representing our safety systems, because this would imply they would be failsafe and not impenetrable.
FMEA has an important relationship with risk management. This article provides an example of this relationship.
The suggested sequence is to first read the article “Relationship between FMEA and Risk Management” to learn about the interactions between FMEA and Risk Management at a high level. [Read more…]
At the 2019 Annual Reliability and Maintainability Symposium, I was involved in a discussion with US Department of Defense (DoD) reliability engineering teams and industry representatives. And on the agenda was a review of an emerging document called the ‘Reliability and Maintainability Engineering Management Body of Knowledge.’ Let’s call this the ‘DoD RAM BOK’ for short.
I only had access to this document’s quick reference guide, and it suggests that the DoD RAM BOK describes what reliability engineering activities need to happen from ‘concept’ through to ‘operations’ for a typical military capability being introduced into service.
The first step to any reliability improvement program is to define what data or information will be required to drive defect elimination. In the previous posts, the following topics were discussed;
All of the topics discussed what data is required and how to structure the data to implement a reliability engineering program or defect elimination process. Understanding the what, when and why set up and is required to setup a reliability engineering program. However, where many organization fail in this process is getting the data collected in a consistent and timely manner. [Read more…]
Businesses take risks to pursue opportunities. What is your risk appetite? This question has been asked by companies for years. Risk appetite is the amount and type of risk an organization is able to support in the pursuit of business objectives. Examples of successful high risk appetite companies are: Amazon; Uber; and Tesla.
Risk appetite can be applied to your personal life as well especially today to thrive in changing times. Two stories of individuals with different risk appetite are presented below to illustrate how much you want to take can affect your life especially in retirement years. [Read more…]
All organizations are made up of individuals. Invariably they reflect each other – the organization reflects the choices of its people, and vice versa. For any organization to thrive and achieve, so too must its people. Without them you’re dead. [Read more…]
Protective Devices are important for our equipment and for our own safety. My guest, Miles, shows us a real-world Protective Device and explains how it could prevent disaster. Reliability Centered Maintenance (RCM) gives us powerful tools to decide how to maintain Protective Devices so they are ready to protect us in the event things go wrong. [Read more…]
In this article post, we discuss the suggested steps for planning a Designed Experiment.
It is critical to clearly define the problem before beginning experimentation. When the problem is not clearly defined and described, there will be confusion in designing and executing effective studies. To define appropriate responses to measure requires that the problem be understood and agreed on. Also, it is key to define the objectives of the actual experiment. If the problem is to reduce scrap rate, how much of a reduction is targeted? [Read more…]
High temperature stress analysis of metallic components must account for an inevitable decrease in room temperature minimum yield strength (Sy). Linear-elastic stress analysis is the norm for nearly all downhole metallic components and accurate results depend upon the use of reliable temperature deration factors. [Read more…]
I was having a lunch meeting with a project manager, and the topic of outsourcing came up. Specifically, outsourcing the manufacture of a particular machine that would form part of a larger vehicle system. I asked him why he was doing this, particularly when for many years the predecessor to this machine was very successfully manufactured in-house. His answer was simple.
It was to transfer risk to a supplier. [Read more…]
As maintenance, reliability, and asset management professionals, we are in an amazing time. We can collect virtually limitless amounts of data on the condition of our assets. With this data, we can determine the exact condition of the assets, predict when the next failure is likely to occur and how it will occur. Besides, with all of this data, we can move to prescriptive maintenance, where the maintenance actions are determined based on the asset condition, not a predetermined strategy. I’ll touch more on prescriptive maintenance in next week’s post. [Read more…]
The predictability of disruption as an innovation accelerator is a central component of the Anticipatory Organization Model, focusing closely on how Anticipatory Organizations and individuals can look at disruption and see enormous opportunities. [Read more…]
Reliable operations are far less expensive to maintain and operate and they produce more consistently. Yet most industrial operations are far from achieving high reliability. Getting there will require effort and that effort goes well beyond the maintenance department alone. They will need to change from reactive, break it then fix it thinking and un-informed cost-cutting measures that undermine reliability. They will need leadership, not management. Leadership is all about making change and taking your organization in new directions. It will be disruptive, or it won’t be much of a change. Leaders are the ones who rock the boat, managers will keep it stable. In choosing excellence you’ll be choosing a path of constant change and improvement. Leadership is needed – it’s about strategy, effective execution, and it’s about your people – without whom you will accomplish very little. If you want excellence, it begins with leadership. [Read more…]
Identifying the right Failure Modes is an essential part of a Failure Modes and Effects Analysis (FMEA). One of the criteria for including a Failure Mode in an FMEA is if the Failure Mode is unlikely to occur, but has severe consequences. Doing so puts you in a position of strength to decide what, or if anything at all, should be done proactively to manage it. [Read more…]
“Component D” had some failures in its first 12 months. How many more would fail in 36-month warranty? ASQ’s Quality Progress Statistics Roundtable published the data and Weibull analysis. The data included left-censored failure counts collected at one calendar time. The Weibull analysis included actuarial failure forecasts. This article describes nonparametric alternatives to Weibull and quantifies extrapolation uncertainty. The nonparametric forecasts are larger than the Weibull forecasts. Alternative extrapolations of nonparametric failure rates from data subsets quantify uncertainty. [Read more…]
