Home Health Case Studies in Maintenance and Reliability: A Wealth of Best Practices
Maintenance Personnel Numbers
Let us assume that you have worked out that you need a minimum staffing of 20 operators per shift. There is a correlation between operator numbers and the size of the maintenance workforce for each specific industry. Hence it is possible to derive maintenance numbers reasonably accurately. As an example, for the petroleum refining industry, 20 operators per shift would correlate to a total maintenance workforce size of 150-200, depending on the efficiency of the operation. Table 9.2 shows how this total might typically be broken down for specific activities in a refinery.
Staffing of Instrument Group
There is a reasonably good correlation between the number of instrument control loops (or valves) and workload, hence, staffing levels. This can be used as a check on the numbers derived above.
Staffing of Electrical Group
In a similar way, the electrical workload correlates with the number of electric motors. This ratio again can provide a check.
|< Prev||CONTENTS||Next >|