on Maintenance Reliability

Author’s Note: I want to reiterate that this Series about reading the basic fracture surfaces, is for novices who often come into contact with such failed components. This Series is about the basics (101), and is intended to give readers an appreciation for the value of such ‘broken’ parts to an effective investigation/RCA. While this information will be rudimentary to seasoned materials engineers, I know they will all appreciate heightening awareness to the need to retain such failed parts for analysis, versus throwing them away and just replacing the part. Throwing away failed parts is a recipe for a repeat failure, when one does not understand why the part failed in the first place. [Read more…]

This article is directed at those ‘first responders’ who arrive immediately at the failure scene. These are the people who have to ensure the area is safe, preserve the scene for investigators and contribute to a plan to expedite a quick, safe return to production norms.

Many do not understand how valuable failed parts are to the metallurgical/forensic investigators. Broken parts are to metallurgists’, like the murder weapon is to a forensic crime investigator.

This article is meant to educate those that have access to the failed parts first, as to why they should preserve them in their failed state (not cleaning them up). We want to give them enough knowledge to be dangerous and raise their curiosity as to making a call on the fracture patterns they see. [Read more…]

Guest post by Mark Latino

If managers knew what the overall power of a well supported Root Cause Analysis (RCA) effort meant for their bottom-line, they would be breaking down doors to implement the process.

Unfortunately, this is often not the case, so this paper is an attempt to educate such individuals about the characteristics of an effective RCA methodology. The paper focuses on three aspects of RCA:

1. What is RCA?
2. What it takes to implement an effective RCA process as a way of conducting business rather than a finite ‘program’ that will eventually end
3. How does RCA contribute to a company’s bottom-line? [Read more…]

Guest post by Mark Latino

This case history takes place in a packaging facility in Virginia. The packer on module E5 was checked for vibration integrity during a pre-machine care evaluation. A problem was detected in the folding arm gearbox. The frequency characteristics indicated a bearing was deteriorating.

This seems very straight forward but let’s put the reality of the situation into the problem detected. The gearbox is located in a section of the packer that is not easily accessible. To do the necessary repairs it will require separating the two sections of the machine. When the packer is split it will take an additional two days of work before the unit can be restored to service. [Read more…]