Maintenance Management Control - Universitas Brawijaya
Transcript of Maintenance Management Control - Universitas Brawijaya
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• Management employs various approaches to measure effectiveness of the maintenance function.
• Often it uses indices to manage and control maintenance.
• These indices show trends by using past data as a reference point.
• Usually, a maintenance organization employs various indices to measure maintenance effectiveness, as there is no single index that can accurately reflect the overall performance of the maintenance activity.
• The main objective of these indices is to encourage maintenance management to improve on past performance.
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Broad IndicatorIndex 1
• Past experience indicates that average expenditure for maintenance for all industry was around 5% of sales.
• However, there was a wide variation among industries. For example, the average values of I1 for steel and chemical industries were 12.8 and 6.8%, respectively.
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Broad IndicatorIndex 2
• This index relates the total maintenance cost to the total output by the organization.
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Broad IndicatorIndex 3
• This index relates the total maintenance cost to the total investment in plant and equipment.
• The approximate average figures for I3 in the steel and chemical industries are 8.6 and 3.8%, respectively.
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Specific Indicator Index 4 → to control preventive maintenance activity within a maintenance organization
• As per the past experience, the value of I4 should be kept within 20 and 40% limits.
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Specific Indicator Index 5 → to measure the accuracy of the maintenance budget plan
• In this case, large variances indicate the need for immediate attention.
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Specific Indicator Index 6 → index for maintenance overhead control
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Specific Indicator Index 7 → useful in scheduling work
• The value of I7 should be high to keep backlogs down.
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Specific Indicator Index 8 → material control area
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Specific Indicator Index 9 → to measure maintenance effectiveness
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Specific Indicator Index 10 → to measure maintenance effectiveness
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Specific Indicator Index 11 → to measure inspection effectiveness
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Specific Indicator Index 12 → material and labor costs
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Specific Indicator Index 13 → maintenance cost to manufacturing cost
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Specific Indicator Index 14 → maintenance cost to man-hours worked
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Specific Indicator Index 15 → to monitor progress in cost reduction efforts