Calculation of OEE based on MTTR, MTTF, MTBF

[RANSINGH SATYAJIT RAY 1]

Is there any method to calculate OEE (Overall Equipment Effectiveness) based on the data from MTTR (Mean time to repair), MTTF (Mean time to Failure) , MTBF (Mean Time between Failure) in equipment used in non manufacturing utility industries.

[Vishwadeep Khatri 265]

Hi Ransingh,

 

Overall Equipment Effectiveness which is the product of Availability, Performance and Quality can't be obtained via MTTR, MTBF and MTTF for the equipment. 

 

This is so because the three measures do not relate to Performance or Quality. 

 

If you know MTBF and MTTR, you should be able to calculate availability losses that are due to unplanned stoppage due to machine failure. However planned stoppages (like change over time) which are part of availability calculation in OEE will still be hidden. Also, unplanned stoppage due to other reasons like power failure (MTBF may not consider power failure as equipment failure based on a common definition which considers only equipment malfunction as failure) will also be hidden. 

 

To answer your question, OEE cannot be inferred from those numbers. OEE, for utilities, as a metric, may not be a great measure of performance but that is a different topic to discuss. 

[Jaidyn Moore 0]

OEE calculation can help in minimizing the overall loss of manufacturing industry and it's partners & suppliers too. I suggest everyone to go for a good OEE Tracking Software like Thrive's OEE Tracking Software. Thanks!!

[Md Hafizur Rahman 0]

Can anybody help me to calculate the OEE and how it relates with MTBF. Example. 

[Mayank Gupta 37]

Hello Md Hafizur

 

You may use the following calculator for OEE.

 

https://www.benchmarksixsigma.com/calculators/overall-equipment-efficiency-oee-3/

 

MTBF may be only able to give you some information on one of the components of OEE (refer to the response from Vishwadeep Khatri above for more details).