TAILIEUCHUNG - Measuring Your True Equipment Productivity

Within most plants around the world there lies a hidden factory. Occasionally you catch a glimpse of it, when production is humming along and everything is going right and no machine is down. You know it's there, just below the surface, the potential of what your plant could be if everything would just continue to work as it should. You wish it could be that way all the time, but somehow problems get in the way and it vanishes, screened from your sight by the reality of everyday business. | CHAPTER V Measuring Your True Equipment Productivity Unlocking The Hidden Factory Within most plants around the world there lies a hidden factory. Occasionally you catch a glimpse of it when production is humming along and everything is going right and no machine is down. You know it s there just below the surface the potential of what your plant could be if everything would just continue to work as it should. You wish it could be that way all the time but somehow problems get in the way and it vanishes screened from your sight by the reality of everyday business. TPM is the key that can unlock that hidden factory and bring perhaps another 25 to 30 of capacity into your production areas. Here is how you calculate your current equipment productivity and determine your improvement potential. Equipment Productivity True equipment productivity is measured by Total Effective Equipment Productivity TEEP . This is the overall formula that includes Equipment Utilization EU and Overall Equipment Effectiveness OEE . Most of the current TPM literature discusses only OEE and disregards the fact that a high level of equipment utilization is required to accomplish a high degree of equipment productivity and a good Return on Assets ROA . You can improve your OEE at the expense of equipment utilization by doing all your set-ups and PMs during planned downtime. If plant management is truly interested in getting good asset and capacity utilization the TEEP formula is of prime importance Figure 7 . Total Effective Equipment Productivity TEEP with the emphasis on effective productivity includes planned downtime and is a combined measure of equipment utilization and overall equipment effectiveness. Overall Equipment Effectiveness OEE is the traditional and most widely used TPM measure. It reflects how the equipment is performing overall while it is being operated. As a matter of fact it is not an exact measure of the equipment effectiveness since setups or changeovers and resulting .

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