Maintenance Supervisors should use this tool to train their maintenance techs, welders and contractors - 10-20 minutes - Post them in the Maintenance Shop after use

Electric Arc caused by welding on equipment is one of the Failure Modes for Rolling Element and Non Rolling Bearings. Electric Arcing can also cause electrical component failure in MCCs and Electric Motors and Drives.

So why do we accept this failure mode when it can be eliminated?

General Rules which must be followed by maintenance personnel and contractors:
(Caution: follow these recommendations only if you want to stop self induced failures caused by welding)

1. Ground leads and welding leads must be the same length on all welding machines by maintenance and contractors. (correct immediately)

2. Grounding of welded surface must be within 6" of welded surface or a Reliability Engineer must approve the variation to the process. (Post this notice on welding machines)

3. All contractors must follow this policy. (insure policy is followed by all)

Failure Modes experienced from Maintenance Welding

- Electric Arcing caused by Welding on equipment
- Flaking caused by Electric Arcing (secondary failure mode)

WARNING: Ensure your contractors follow the same process to eliminate electric arcing.

Warning: failure to accomplish this one task properly will cause bearing failure by "electric arcing" which is a failure mode of bearings. In addition it will cause failure of many different electrical components. Remember: Electric current from welding will always follow the path of least Resistance.

Remember Welders are not reliability experts but professionals who know how to weld to construct and repair using all types of welding processes. I was a certified welder for many early years and later became a reliability specialist and conducted Root Cause Analysis on many failures around the world and have seen this problem in almost every plant and site I have visited. Stop this on your site now.

Tip provided by Ricky Smith, GPAllied. If you have questions or comments please send them to Ricky at rsmith@gpallied.com.

Upcoming Events

August 9 - August 11 2022

MaximoWorld 2022

View all Events
banner
80% of Reliabilityweb.com newsletter subscribers report finding something used to improve their jobs on a regular basis.
Subscribers get exclusive content. Just released...MRO Best Practices Special Report - a $399 value!
DOWNLOAD NOW
“Steel-ing” Reliability in Alabama

A joint venture between two of the world’s largest steel companies inspired innovative approaches to maintenance reliability that incorporate the tools, technology and techniques of today. This article takes you on their journey.

Three Things You Need to Know About Capital Project Prioritization

“Why do you think these two projects rank so much higher in this method than the first method?” the facilitator asked the director of reliability.

What Is Industrial Maintenance as a Service?

Industrial maintenance as a service (#imaas) transfers the digital and/or manual management of maintenance and industrial operations from machine users to machine manufacturers (OEMs), while improving it considerably.

Three Things You Need to Know About Criticality Analysis

When it comes to criticality analysis, there are three key factors must be emphasized.

Turning the Oil Tanker

This article highlights the hidden trap of performance management systems.

Optimizing Value From Physical Assets

There are ever-increasing opportunities to create new and sustainable value in asset-intensive organizations through enhanced use of technology.

Conducting Asset Criticality Assessment for Better Maintenance Strategy and Techniques

Conducting an asset criticality assessment (ACA) is the first step in maintaining the assets properly. This article addresses the best maintenance strategy for assets by using ACA techniques.

Harmonizing PMs

Maintenance reliability is, of course, an essential part of any successful business that wants to remain successful. It includes the three PMs: predictive, preventive and proactive maintenance.

How an Edge IoT Platform Increases Efficiency, Availability and Productivity

Within four years, more than 30 per cent of businesses and organizations will include edge computing in their cloud deployments to address bandwidth bottlenecks, reduce latency, and process data for decision support in real-time.

MaximoWorld 2022

The world's largest conference for IBM Maximo users, IBM Executives, IBM Maximo Partners and Services with Uptime Elements Reliability Framework and Asset Management System is being held Aug 8-11, 2022