A service interval refers to the frequency at which the service types are performed. For example, you could create a PM schedule for a piece of equipment that schedules a belt inspection every 5,000 hours and a mandatory belt replacement every 20,000 hours.
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Exxon Mobil, the largest company in Texas and the second-largest in the U.S., reported revenue of $411.9 billion last year. That is roughly 4,100 times the annual sales of Bloedorn Lumber, the business generating the most revenue in Wyoming.