JUSTIFICATION

The computer could also be used to determine the most cost effective preventive maintenance interval, to manage inventory of parts and stores,and to reduce the expense of training new personnel.The increased and availability and affordability of computer resources,the benefit of comperisation are becoming accessible to more area of the plant and factory.although the function it perform and advantages varies,in general the benefit of computer automated maintenance could be classifed into four stages or types: Reduced the cost
                                                       Greater access to information
                                                       Better planning
                                                       Increased control
The oldest and most frequent cited benefit of the computerization is lower cost,either the same work could be carried out with less effort or because more work could be peformed without much fatigue,the computer cuts the most per unit of work accomplished,saving the plant time and money.Manually intensive functions,requiring repetitive clerical tasks are obvious opportunities for this type computer solution.typing work orders,,for example could be streamlined with work processing capability  that stored standard document,enable changes to be made simply by typing the revision.The result is that work orders could be provided by the typist thereby lowerin the cost (Atwater,1995).
Computerisation also beneficially affect maintenance work by using the computer as a job planning tool improves the efficiency of the planner , reduces errors and  could even streamlined the maintenance work . Standard job plan could be stored in computer disk and easily modified  for the specific circumstance of the job.The computer cut the planner time and because the standard plan has all the parts and tools identified for sucessfully performing the maintenance job, ensure that the job is done right and with a  minimum of back tracking to get the forgotten items.