1. Preventive Maintenance :
Preventive Maintenance, as name suggests, is a preventive action that is used to prevent any unexpected failure from occurring in future. Its main aim is to identify problems that are small at initial and can lead to major issue. After then, resolve it before major problem develops.
2. Predictive Maintenance :
Predictive Maintenance, as name suggests, is a predictive action that is used to identify potential failures of assets that might occur by simply checking assets while they are running. In predictive maintenance, one can make sure when asset is required to be maintained to avoid unnecessary investments and maintenance.
Difference between Preventive and Predictive Maintenance :
|Preventive Maintenance||Predictive Maintenance|
|Preventive maintenance is usually performed to prevent assets from unexpected failures.||Predictive maintenance is usually performed to predict failures that might occur so that it can be prevented from occurrence.|
|This maintenance is performed on whether needed or not i.e. whether potential failure is identified or not. This is done on regular basis.||This maintenance is performed whenever needed i.e. whenever any potential failure is identified. This is not done on regular basis.|
|One needs to increase downtime of asset to carry out maintenance i.e. one need to stop primary functions of assets to carry out maintenance action.||No downtime of machine is required i.e. one does not need to stop primary functions of assets as this maintenance can be performed while assets are performing their regular functions.|
|In this, maintenance occurs even if potential failures are not identified.||In this, maintenance occurs only when potential failures are identified.|
|It is less complex process and simple than predictive maintenance.||It is more complex and difficult than preventive maintenance.|
|This maintenance action is more costly than predictive maintenance as regular maintenance requires more investment.||This maintenance action is less costly than preventive maintenance as one can simply reduce avoid maintenance that is not necessary and thus reduce maintenance costs.|
|It is more time consuming because in this type of maintenance, one need to perform inspection and maintenance on regular basis.||It is less time consuming as in this type of maintenance, one need to perform inspection and maintenance only when required.|
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