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Illustrating Operational & Maintenance Data for Generation Assets on a Pareto Chart

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Original date: 
Wednesday, September 13, 2023

If we were to do reliability analysis on certain assets, which assets are worth our effort and provide the greatest impact? To solve this, our team developed a focused methodology to help us identify which asset types need to be further analyzed in the coming years. Our goal is to identify the asset type that causes the highest generation of lost opportunity cost and the highest maintenance costs. Ideally, the generation of lost opportunity cost should be added to maintenance cost. Lost opportunity cost is calculated from existing operational performance data, which is collected and used for NERC GADS (North American Electric Reliability Corporation Generating Availability Data System) reporting. Maintenance cost is calculated from maintenance history in CMMS (Computerized Maintenance Management System). The operational performance and maintenance history data are illustrated using a Pareto chart. As a result, the asset type that causes the highest generation of lost opportunity cost can be identified from the chart. However, asset types with the highest maintenance costs may not indicate the asset type with the most issues. Besides, the NERC GADS codes may be related to one or more assets in CMMS and, therefore, need a relationship to be created if the costs are to be added.

BoK Content Source: 
MainTrain 2023
BoK Content Type: 
Presentation Slides
Presentation Paper
Asset Management Framework Subject: 
1.05 Asset Management Planning, 2.02 Operations & Maintenance Decision-Making, 4.00 Asset Information General, 6.01 Risk Assessment & Management, 6.05 Assets Performance & Health Monitoring, 6.06 Asset Management System Monitoring
Maintenance Management Framework Subject: 
5.1 Stats Analysis / Analytical Methods, 9.5 Records Management, 10.0 Continuous Improvement General, 10.1 Metrics / KPIs, 10.5 Asset Reliability Improvements
Author Title: 
Power Quality Engineer
Author Employer: 
Manitoba Hydro - Head Office
Author Bio: 

Firdaus Timyati is a performance analyst at Manitoba Hydro, a provincial Crown corporation that provides electricity and natural gas services to the province. She was born and raised in Malaysia. Firdaus holds a bachelor’s and a master’s degree in Electrical Engineering from Universiti Tun Hussein Onn Malaysia. After moving to Canada, she received a post-baccalaureate diploma in Engineering from the University of Manitoba. She then obtained a professional engineer licence from Engineers Geoscientists Manitoba. Firdaus has a passion for renewable energy and power systems. She has been involved in various reliability engineering projects related to hydroelectric generation and transmission.