Maintenance & Reliability
HP Reliability: Publish or perish – a reminder to industry
A number of useful textbooks dealing with machinery reliability and dozens of technical papers dealing with related subjects owe their existence to an interesting policy. Twenty-one years ago, one of ..
HP Reliability: Closed-loop oil mist systems are a viable lubrication option
Although plantwide, centralized oil mist systems have served industry well since the early 1960s, closed-loop oil mist systems have made major inroads only in this decade. Environmentally-acceptable a..
HP Reliability: Reliability growth models for process plants
Failure data are used to build simple log-log plots for predicting future failures and identifying if failure trends are improving or deteriorating. On the Crow/ AMSAA plot (Fig. 1), stable processes ..
HP Reliability: How installation and operation influence MTBF
Mean-time-between and mean-time-to-failure (MTBF and MTTF) can differ for the same equipment. The differences are often attributable to quality of installation and grade of operation. This situation i..
HP Reliability: What to do with reliability indices
This issue is often raised, or even debated. A simple explanation would be that reliability data can be converted into uncomplicated, figure-of-merit performance indices. Consider these indices as coa..
HP Reliability: What to do with reliability indices - Fig 1
This MTTF data from production, maintenance Remember: MTTF is a meterstick- and purchasing records. not a micrometer ..
HP Reliability: Plans needed to train proficient engineers
More than once, this column has dealt with the importance of training the reliability professional. Thirty-five years ago, my section supervisor at New Jersey-based Exxon Research and Engineering disc..
Use equipment failure statistics properly
These data can help in deciding which reliability improvement efforts are feasible and reasonable
Economics of ‘world-class’ turnarounds
Understand the principles and substantially reduce costs
Use equipment failure statistics properly - Fig 1
Fig. 1. Life spans of machinery commponents and ..
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