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The maintenance man hours include the total man hours utilized for the whole year for performing all activities of maintenance including predictive, preventive and reactive maintenance with the plant and machinery. It should not generally include the waiting hours for the spare parts/delivery.
For planning purposes, we can take the guidelines of the equipment manufacturer on various maintenance activities to be performed on the pnm. The unpredicted breakdown man hours can be minimised by keeping the necessary spares parts in place and ensuring the pnm is always on focused maintenance strategies including reliability centered maintenance
Most industrial equipment come with manuals with instructions on how to properly perform periodic maintenance and how long it takes and at what intervals. You could use these numbers in order to estimate the downtime and the man hours required for these equipment on yearly bases.
Same applies to buildings and plants. However instead of manuals you need to inquire from the contractor on how often the buildings require maintenance, paint jobs, etc.
(working days per year - the annual holiday days) * working hours per day * workers number.
Weekend 2 days /month , for the whole year 58 days .
daily working hours = 8 x 307= 2456 hours per year .
No of employees per cost center : e.g = 3 ,, so 3x2456 = 7368 hours / year / cost center
TOTAL MANPOWER MULTIPLY TOTAL WORKING HOUR
Two types of maintenance:
A) Corrective Maintenance
B) Preventive maintenance
Each man hours should be calculated individually in order to estimate the performance of the employee, breakdown time.
Usually preventive maintenance can be predicted and estimated previously, but the corrective maintenance depends on the type of breakdown (major or minor breakdown), spare parts to be replaced, trouble shooting to be done, rout cause analysis...etc
The start time to End time of a Machine Service starting every planned schedule in a calendar year.
This can be captured in our MAXIMO. Let's follow every MAXIMO details and if per adventure there are differences in hours allocated for a particular job let it be communicated to the Planners so he can make corrections. By doing this, we can always get maintenance man hour so easily
Based on equipment maintenance schedule, qualification of the staff and working condition we can plan the manhours
1.The estimation should include the manufacturers maintainance manual which lists the periodic maintainance schedule for the related machinary for the whole year based on the current running hours.This provides the guidelines for the average man hours required to complete a particular maintainance activity.
2.The estimation should also include the breakdown history for the particular machionary,which supplies an average number of breakdowns that are to be expected .Again,the manufacturers maintainance manual would be needed to be consulted for the average number of man hours required for the maintainance activities to be performed to rectify the breakdown.
3.A stock of spares is to be kept as a minimum to serve the running machinary inorder to reduce the downtime.
4.The manhours aggregated by the above planning activities(for completing the Predictive ,preventive and the reactive maintainance) will give the total manhours estimation required for a particular machinary for a whole year.
With calculate how many hour time you working for a week plus over time you get it and divide with hour time you finish one or two job.
But safety first is additional hour time.
