*4.4.2 Mean time to repair (MTTR)*

The MTTR is the average time taken to complete the repair of each breakdown, restore the plant(s) to functional use and resume production. The shoter

**69**

**Figure 8.** *Plant reliability.*

**Figure 7.**

the performance would improve.

*Harnessing the Multiple Benefits of a Computerised Maintenance Management System*

the MTTR, the better. This is because the MTTR influences the duration of the downtime of machines in the production line. Similar to other factors, the monthly and annual averages for 2017 exceeded the benchmark of 1.5 hours, as is evident from **Figure 6**. Similarly, in 2018 the average in September is marginally above the benchmark of 1.35 hours. However, the monthly performance in January, April, May, June and July was impressive. It was hoped that, in the last quarter of the year,

*DOI: http://dx.doi.org/10.5772/intechopen.93732*

*Total duration of downtime of plant equipment.*

#### *Harnessing the Multiple Benefits of a Computerised Maintenance Management System DOI: http://dx.doi.org/10.5772/intechopen.93732*

**Figure 7.** *Total duration of downtime of plant equipment.*

*Operations Management - Emerging Trend in the Digital Era*

of breakdowns was the same as the benchmark set for 2018. It was hoped that in the remaining months of 2018, the plants would record a lower number of breakdowns. Another concern was the length of time it takes to conclude repairs or known as MTTR.

The MTTR is the average time taken to complete the repair of each breakdown, restore the plant(s) to functional use and resume production. The shoter

**68**

**Figure 6.**

*Mean time to repair (MTTR).*

**Figure 5.**

*Total number of breakdowns.*

*4.4.2 Mean time to repair (MTTR)*

the MTTR, the better. This is because the MTTR influences the duration of the downtime of machines in the production line. Similar to other factors, the monthly and annual averages for 2017 exceeded the benchmark of 1.5 hours, as is evident from **Figure 6**. Similarly, in 2018 the average in September is marginally above the benchmark of 1.35 hours. However, the monthly performance in January, April, May, June and July was impressive. It was hoped that, in the last quarter of the year, the performance would improve.
