Category: P-F Interval
-
Objectivity in condition based maintenance decisions
I am interested in knowing more on your decision tool around CM (Condition Monitoring) prognosis and when to intervene in corrective maintenance. I want to look at different ways of removing subjective decisions and use more of an objective method given the complexity of information surrounding critical productive equipment. As we have many mines around…
-
Temporary fix work orders
In a fleet of 40 haul trucks, a common work order type is triggered by a low level alarm of some fluid (for example, hydraulic, coolant, lubricant, air, etc). Sometimes some function will not perform adequately or at all due to insufficient fluid. The immediate quick fix will replenish the fluid and put the unit…
-
NAVAIR and the PF interval
This slide presentation provides some facts on the P-F interval. It concludes with a common misconception about the P-F graph.
-
Internal and external CBM variables
As maintenance or reliability engineers we need to discover what factors influence failure and failure probability. Which of those factors can we control, and which can we monitor for their predictive content. It will help to distinguish between External and Internal variables. Definition: External CBM variables such as loading, operator discretionary actions, shock, terrain, etc.…
-
The elusive P-F interval
This article discusses the P-F Interval for CBM decision making, its areas of usefulness, and those areas where it is inadequate as a predictive maintenance strategy. An alternative more general approach based on the EXAKT system is proposed. Two categories of decisions, the first driven by failure probability, the second driven by both failure probability…