If a manufacturing plant was a human brain: Maintenance would be the repairing blood flow, Operations would be the electricity sparking between synapses, and Reliability would be the conscience. [Read more…]
How Equipment Fails, Understanding the 6 Failure Patterns
Knowing How Equipment Fails Allows Effective Plans to Be Put In Place and Improve Equipment Reliability
Identifying How Equipment Fails
In the 1960s the failure rate of jet aircraft was high even with the extensive maintenance programs that were put in place to prevent the failures. The programs required overhauls, rebuilds and detailed inspections which required the various components to be disassembled. All of these activities were based on an estimated save life of the equipment. [Read more…]
Calculating System Availability
How to Properly Calculate System Availability
Recently received a request for my opinion concerning the calculation of system availability using the classic formula
$latex \displaystyle&s=4 A=\frac{MTBF}{MTBF+MTTR}$
The work is to create a set of goals for various suppliers and contractors to achieve. The calculation values derive from vendor data sheets and available information concerning MTBF and MTTR. The project is in the design phase thus they do not have working system’s available to measure actual availability.
How would you go about improving on this approach? [Read more…]