Page 601 - Subyek Teknik Mesin - Forsthoffers Best Practice Handbook for Rotating Machinery by William E Forsthoffer

Best Practice 1 1.8
Preventive and Predictive Maintenance Best Practices Best Practice 1 1.9
B.P. 11.7. Supporting Material

Refer to the following best practices for supporting material
concerning performance monitoring and trending:

Pumps —————B.P. 2.7 Steam turbines —————B.P. 5.4 and 5.13
Compressors —————B.P. 3.14, 3.17 and 3.27 Gas turbines —————B.P. 6.9 and 6.10

Best Practice 11.8Practice 11.8
Best
Use predictive maintenance results (PDM) to reduce PM Benchmarks
e preventive maintenance tasks e and expand PM This best practice has been used since 1990 to optimize
intervals. plant machinery safety and reliability. Extension of PM intervals has
Continually review all preventive maintenance (PM) tasks along with increased low pump MTBFs (less than 12 months) to over 48
PDM results to eliminate PM and/or extend intervals. months.

Lessons Learned
PM-heavy programs produce lower machinery MTBFs and
more breakdown maintenance.

B.P. 11.8. Supporting Material

See B.P. 11.1 for supporting material.

Best Practice 11.9Practice 11.9Practice 11.9
Best
Best
Organize the plant reliability effort to integrate operations Lessons Learned
and process personnel into the existing maintenance Reliability groups which do not include operations and
dominated reliability program to: process engineering input produce lower machinery
Bring ‘process awareness’ into the program to significantly increase MTBFs and less implementation of recommendations.
machinery reliability. Maintenance-centered plant reliability programs produce lower
Increase operator and process engineer awareness of machinery machinery MTBFs than reliability programs that have integrated
reliability key factors. maintenance, operations and process engineering functions.
Increase recommendation implementation by having process and
operations support. Benchmarks
Minimize ‘finger pointing’ between maintenance and operations.
This best practice has been recommended since the mid-1990s when
The best practice of having operations and process engineering the company was involved with a number of site machinery audits in
personnel in the reliability group has been implemented by many clients refineries and gas plants. Implementation of this best practice led to
to result in plant machinery safety and reliability of the highest degree. significant improvement of machinery reliability plant-wide.

- Predictive maintenance (condition based) activities still are
B.P. 11.9. Supporting Material
minimal.
Regardless of the level of a site reliability optimization program, - Some action plans for bad actor resolution have been defined
it can be improved. My personal experience is that: but are not implemented.
- Lessons learned, from bad actors, have not become best
- Bad actors) are defined but not permanently solved.
practices for machinery upgrades and/or new equipment
- The majority of maintenance activities still are reactive e
purchases.
‘firefighting’. - The reliability effort is maintenance based and does not
- Preventive maintenance (time based) activities are excessive.
incorporate other site disciplines.
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