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Home » Blog

by Fred Schenkelberg 4 Comments

A Couple of Questions for You Concerning MTBF

A Couple of Questions for You Concerning MTBF

Do make compromises around gathering and analyzing data since you only need to report MTBF?

Do you use MTBF (exponential distribution) based test planning when you know the product has a non-constant hazard rate?

These questions came up this week via email looking for advice when directed to ignore the actual situation and just do what the customer wants.

I’m traveling this week, rather jet-lagged today, so going to keep this one short.

How would you answer these questions? What advice would you give someone using exponential based reporting, test planning, or data analysis approaches knowing the customer expects that process yet the data and your experience suggest you should use another method  (Weibull or MCF, for example)?

Please add you comments below and let’s prepare a list of what one should say or use to respond to such actions.

 

Filed Under: Articles, NoMTBF

by Semion Gengrinovich Leave a Comment

Wear Out Prediction Model

Wear Out Prediction Model

In the realm of mechanical engineering the reliability and longevity of pumps are critical for numerous industrial applications. Predicting wear out of pumps can significantly enhance maintenance strategies, reduce downtime, and optimize operational efficiency. One effective approach to predicting wear out is by monitoring the revolutions per minute RPM of pumps over a large population in extended time periods.

This video delves into the methodology of creating a wear out prediction model.

[Read more…]

Filed Under: Articles, on Product Reliability, Reliability Knowledge

by Mike Sondalini Leave a Comment

Don’t Waste Your Time and Money with Condition Monitoring 

Don’t Waste Your Time and Money with Condition Monitoring 

Predictive Maintenance applies condition monitoring techniques to discover potential failures. While finding a problem before it becomes a failure is good, companies can end up with so much work that maintenance backlog skyrockets, maintenance costs blow-out and people burn-out. Understanding when a predictive maintenance strategy can cause uneconomic maintenance, or why condition monitoring can produce unending failures, is vital if you want reliable equipment with low maintenance cost.

[Read more…]

Filed Under: Articles, Maintenance Management, on Maintenance Reliability

by James Reyes-Picknell Leave a Comment

Today’s Gremlin – Don’t sweat the small stuff

Today’s Gremlin – Don’t sweat the small stuff

Today’s Gremlin – Don’t sweat the small stuff, gets us into trouble by skipping details and steps, that are important, often to save time. Don’t sweat the small stuff cuts a lot of corners, and makes a lot of mistakes through that carelessness. Often, he’s trying to save time, meet a deadline, or satisfy operators who urgently need their equipment back.

[Read more…]

Filed Under: Articles, Conscious Asset, on Maintenance Reliability

by Greg Hutchins Leave a Comment

People Before Profits Drives Organizational Performance

People Before Profits Drives Organizational Performance

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

“Greed, for lack of a better word, is good. Greed is right. Greed works.” (Gordon Gekko, ‘Wall Street’ movie, 1987)

When energy-trading company Enron declared bankruptcy in 2001, it was the largest bankruptcy filing in U.S. history. Enron’s execs were pocketing millions while knowingly overstating the company’s earnings to shareholders through fraudulent accounting.

“Greed is good” even in the highly regulated financial services sector. UK’s Parliamentary Commission on Banking Standards sums it up nicely when it says, “Too many bankers, especially at the most senior levels, have operated in an environment with insufficient personal responsibility. Top bankers dodged accountability for failings on their watch by claiming ignorance or hiding behind collective decision-making. […] Remuneration has incentivised misconduct and excessive risk-taking, reinforcing a culture where poor standards were often considered normal. Many bank staff have been paid too much for doing the wrong things, with bonuses awarded and paid before the long-term consequences become apparent. The potential rewards for fleeting short-term success have sometimes been huge, but the penalties for failure, often manifest only later, have been much smaller or negligible. Despite recent reforms, many of these problems persist.” – with emphasis (Parliamentary Commission on Banking Standards, 2013)

[Read more…]

Filed Under: Articles, CERM® Risk Insights, on Risk & Safety

by Miguel Pengel 2 Comments

A Free Weibull Calculator (Online)

At Pardus Consulting, we’ve just launched an online Weibull calculator that performs life data analysis on datasets containing both failed and suspended data.

The tool is free to use, and was built to support the reliability and maintenance community.

We hope you get a lot of use out of it!

The tool can be accessed HERE.

Filed Under: Articles, Asset Management in the Mining Industry, on Maintenance Reliability Tagged With: weibull analysis, weibull calculator

by Joe Anderson Leave a Comment

The Necessity of Communication as a Leader in Maintenance

The Necessity of Communication as a Leader in Maintenance

Effective communication is often cited as one of the most essential leadership skills in any field. In the maintenance sector, where operations are complex, fast-paced, and directly linked to the safety and efficiency of equipment, communication becomes even more critical. As a leader in maintenance, your ability to clearly convey information, foster collaboration, and keep all team members aligned can directly impact the success of your operations and the achievement of your organizational goals. This is why effective communication in maintenance leadership is not just a skill, it’s a necessity.

[Read more…]

Filed Under: Articles, on Maintenance Reliability, ReliabilityXperience

by Hemant Urdhwareshe Leave a Comment

Homogeneous and Nonhomogeneous Poisson Process (HPP and NHPP) for repairable systems

Homogeneous and Nonhomogeneous Poisson Process (HPP and NHPP) for repairable systems

Dear friends, we are happy to release this 75th video of our technical channel ! In this video, Hemant Urdhwareshe explains the concepts of HPP and NHPP for repairable systems. The NHPP is foundation for Reliability Growth! Hemant is a Fellow of ASQ and is certified by ASQ as Six Sigma Master Black Belt (CMBB), Black Belt (CSSBB), Reliability Engineer (CRE), Quality Engineer (CQE) and Quality Manager (CMQ/OE).

[Read more…]

Filed Under: Articles, Institute of Quality & Reliability, on Tools & Techniques

by Nancy Regan Leave a Comment

How Do You Know What Functions to Include in an FMEA

How Do You Know What Functions to Include in an FMEA

In this tutorial, I show you how to determine which Functions to include in your Failure Modes and Effects Analysis (FMEA) so you can avoid the common pitfall of creating a meaningless list of generic Functions. Many organizations end up with a “Component FMEA,” filled with unnecessary or poorly defined Functions that don’t truly represent what’s needed from the equipment. In this video, I’ll walk you through an algorithm that will help you focus on what’s important, using an industrial air compressor as an example. By the end, you’ll know how to:

  • Write effective Primary Functions with clear performance standards
  • Use an algorithm to decide which Functions should be included
  • Avoid analysis paralysis and keep your FMEA meaningful and manageable

Don’t let a never-ending list of Functions bog down your analysis—watch now to learn how to streamline your approach!

[Read more…]

Filed Under: Articles, Everyday RCM, on Maintenance Reliability

by Laxman Pangeni Leave a Comment

The Hidden Power of the P-Diagram in Engineering Design

The Hidden Power of the P-Diagram in Engineering Design

Introduction

When we think of reliability tools, the FMEA often takes the spotlight. But if you’re skipping the P-Diagram, you’re likely missing the very foundation of failure prevention.

In my 15+ years working on field reliability and failure analysis, I’ve come to view the Parameter Diagram (P-Diagram) as the unsung hero of robust design.

[Read more…]

Filed Under: Articles, on Product Reliability, Reliability by Design

by Michael Keer Leave a Comment

4: Design & Planning – Part 1: Design

4: Design & Planning – Part 1: Design

by Mike Freier

In the next chapter in our series on taking a hardware product from idea to scale, we move into the Design & Planning stage. Minimal Viable Products (MVP) and roadmaps will help you identify the key features for your new product.

[Read more…]

Filed Under: Articles, on Tools & Techniques, The Hardware Product Develoment Lifecycle

by Semion Gengrinovich Leave a Comment

Why Weibull is so popular?

Why Weibull is so popular?

The Weibull distribution’s popularity across various industries stems from its remarkable flexibility and adaptability in modeling a wide range of data types, especially in reliability engineering and failure time analysis. This versatility is primarily due to the Weibull distribution’s shape parameter, which allows it to model different failure rates over time, aligning closely with the real-world behavior of many systems and components.

[Read more…]

Filed Under: Articles, on Product Reliability, Reliability Knowledge

by Fred Schenkelberg Leave a Comment

How to Judge a Reliability Book

How to Judge a Reliability Book

By it’s cover no doubt. The title and cover are important, this is true. When you judge a reliability book we often first see and evaluate the cover.

The author? Do you buy the book based on who wrote or edited it?

Do you have a quick scan or check for key features before you add the book to your library? I’m curious how you select a book to use a reference for your work. The books we read and use for work shape our work, thus it’s important to have the right works at our disposal. [Read more…]

Filed Under: Articles, NoMTBF

by Mike Sondalini Leave a Comment

Deciding When to Do a Reliability Failure Study

Deciding When to Do a Reliability Failure Study

WHEN YOU DO A RELIABILITY FAILURE STUDY LOOKING TO PROTECT YOUR BUSINESS AGAINST LARGE UNCOMMON FAILURES, AND THOSE FAILURES THAT ARE VERY COMMON BUT THOUGHT TO BE TOO SMALL TO BE A SERIOUS PROBLEM, BE SURE TO DO LIFETIME FINANCIAL ANALYSIS WHEN DECIDING THE FAILURES TO INVESTIGATE

—

I am to do a reliability failure study and would like to know the definition of repetitive failure with respect to some recognized reliability standard.

We want to apply the recommendations in the standard for failure codes in our CMMS system to decide which equipment failures need a reliability failure study. For example, we have a centrifugal pump bearing fail twice in a year. I am of the opinion this is a repetitive failure.

[Read more…]

Filed Under: Articles, Life Cycle Asset Management, on Maintenance Reliability

by Greg Hutchins Leave a Comment

Tech Eats Companies

Tech Eats Companies

By Greg Hutchins (first posted on CERM ® RISK INSIGHTS – reposted here with permission)

Over the next 10 years, I expect many more industries to be disrupted by software, with new world beating Silicon Valley companies doing the disruption in more cases than not.
Marc Andreessen – Venture Capitalist

We’ve been involved in engineering and tech automation for years. What surprises us is the observable breadth, depth, and impacts of automation (AI included) over the last five years, which COVID accelerated. What’s the big deal about automation?

[Read more…]

Filed Under: Articles, CERM® Risk Insights, on Risk & Safety

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