Tham khảo tài liệu 'intro predictive maintenance 2e episode 2', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Financial Implications and Cost Justification 27 Accordingly it is important to have good past records if we are to do any better than guess at a value. If breakdowns are purely random occurrences then past records are not going to give us the ability to predict precise savings for inclusion in a sound financial case. They may however give a feel for the likely cost when a breakdown happens. At best we could say for example the likely cost of a stoppage is 8 000 per hour and likely breakdown duration is going to be two shifts at a minimum. The question senior management then has to face is Are you willing to spend 10 000 on this condition monitoring device or not Poor-Quality Product as Plant Performance Deteriorates As a machine s bearings wear out its lubricants decay or its flow rates fluctuate the product being manufactured may suffer damage. This can lead to an increase in the level of rejects or to growing customer dissatisfaction regarding product quality. Financial quantification here is similar to that outlined previously but can be even less precise because the total effect of poor quality may be unknown. In a severe case the loss of ISO-9000 certification may take place which can have financial implications well beyond any caused by increased rejection rates. Increased Cost of Fuel and Other Consumables as the Plant Condition Deteriorates A useful example of this point is the increased fuel consumption as boilers approach their time for servicing. The cost associated with servicing can be quantified precisely from past statistics or a service supplier s data. The damaging effects of a vibrating bearing or gearbox are however less easy to quantify directly and even more so as one realizes that they can have further consequential effects that compound the total cost. For example the vibration in a faulty gearbox could in turn lead to rapid wear on clutch plates brake linings transmission bushes or conveyor belt fabric. Thus the component .
