How do you decide the Failure Developing Period?

Question: “OK, so how do you decide the Failure Developing Period?” (FDP)
– Maintenance Supervisor, International Paper

Answer: It comes down to an educated guess unless you have very good historical data. Even then, there are many factors that decide the Failure Developing Period. A practical suggestion is to try to estimate day, week, month, quarter or year.

  • Example 1: Foundation for a 125 HP pump-motor-coupling probably takes at least a year to develop from initial crack to failure.
  • Example 2: Sprocket for chain drive (small, low load, 900 rpm).. at least a month, perhaps a quarter
  • Example 3: Bad sounding bearing if we are using stethoscope? Days perhaps hours
  • Example 4: Initial high vibration with vibration pen? Months (that’s why we use VA)

Agree on something that makes sense based on FDP (Not life of component), then try to collect data to learn better over time.

At IDCON, we understand the pressure you face trying to build a reliable plant.
We provide side-by-side reliability and maintenance consulting and training designed to keep your equipment running.

For over 45 years, we’ve partnered with 100s of manufacturing plants around the world to eliminate the costs and the pressure caused by unreliable equipment. And we’d love to do the same for you.

Contact us today to see how we can help you keep your plant running.

Related Articles

Picture of Torbjörn Idhammar

Torbjörn Idhammar

President & CEO, IDCON Inc. Reliability and Maintenance Consultant

Want weekly Reliability & Maintenance Tips?

Weekly Tip Signup Form

Best practices. Common sense. Pratical tips.
All designed to help you and your team keep your plant running

IDCON © 2020 All rights reserved

Free Download & Video

8 Steps to Successfully Implement Preventive Maintenance

Reduce your costs with an effective PM program