Page 287 - Improving Machinery Reliability

258 Improving Machinery Reliability

Maintenance excellence begins when maintenance expense is in the range of 2%
of RAV. It is believed that this indicator is not industry specific. One major caution
must be kept in mind: a plant could be spending less than 2%, but not be maintaining
the facilities and equipment at an appropriate level. Other indicators, such as mainte-
nance cost per unit of output, mean time between failure, and reactive vs. planned
maintenance, should be used to verify that the maintenance service level is proper.
The accompanying chart, Figure 4-9, shows results from 25 plants in the oil and
gas industry recently benchmarked by HSB Reliability Technologies. Managers can
gain insight into the relative performance and improvement potential of their plants
easily and quickly by comparing maintenance costs to RAV.