They may be variable when linked to the level of activity (for example, tonnes handled per season), or fixed (for example, site ... Planned Preventive Maintenance Advantages Planned preventive maintenance (PPM) increases the reliability ofanbsp;...
|Title||:||Maintenance and Operation of Bulk Grain Stores|
|Author||:||David B. Williams, Alfred D. Gracey|
|Publisher||:||Food & Agriculture Org. - 1994-01-01|