An Efficient Failure-Based Maintenance Decision Support System for Smalland Medium Industries - Efficient Decision Support Systems: Practice and Challenges from Current to Future - page 206

time (Elsayed, 1996). Strategies such as CBM or DOM are executed based on
measurements and estimates.
Once the top ten worst performing machines are identified from DMG, the
appropriate action to identify the next focused action is implemented. In other
word, maintenance staffs need to move from the strategic systems level to the
operational component level.

Table 3. DMG-RCM Strategy (Labib, 1998b)

5.2 Empirical results
As a case study, the dataset from Fernandez et al. (2003) on the disk brake pad
manufacturing company in England is used. Table 4 shows the level of the frequency of
failures decision analysis using formulas in (1), (2) and (3).

ID Frequency Level

A 23 High

B 19 High

C

16 Medium

D 16 Medium

E

16 Medium

F 16 Medium

G 15 Low

H 14 Low

I 13 Low

J 12 Low

Table 4. Frequency of Failure Decision Analysis (Fernandez et al., 2003)
Decision analysis graph on frequency of failures is shown in Figure 2.
Once intervals of the machine are categorized correctly using formulae (4), (5) and (6), the
DMG matrix can be constructed as shown in Table 6. Next, a strategic decision is identified
by mapping at DMG in Table 1, given by Labib (1998b). Then, a valid recommendation can
be given to the SMI maintenance management team to implement maintenance strategy.