Posted by: ahmedashfaque | April 23, 2014

testing & quality assurance: preventive vs. reactive

Ashfaque Ahmed's Blog

In manufacturing world, we have 2 types of maintenance viz. preventive maintenance and reactive maintenance. In preventive maintenance, regular inspection of machines are done and if any machine found to be not performing well then before it breaks down, a shutdown is taken and machine is fixed before it breaks down. In reactive maintenance, when a breakdown occurs then a shutdown is taken and the machine is fixed.

When any breakdown of a machine occurs then a shutdown can not be taken immediately. For example, the breakdown occurs in the night shift and no adequate maintenance personnel are available to take a shutdown and fix it. Similarly, even in day time, it may take time to bring men and tackles at the breakdown site, do some preparation and then actually start working on the fixing work. Sometime, the preparation time could be as high as 10 hours. Thus there will…

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