Tham khảo tài liệu 'improving machinery reliability 3 episode 15', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 604 Improving Machinery Reliability In spite of relatively high maintenance costs the Society of Maintenance and Reliability SMRP Professionals reported in 1996 that more than 56 of . industries do not have a comprehensive maintenance and reliability program. Modem Power Systems July 1994 reported results from an EPRI study which was independently collaborated by Chevron that showed the execution of a predictive maintenance program on electric motors could reduce the cost of maintenance by more than 50 . Comparative Cost of Maintenance Strategies Chevron EPRI Study Run to Failure Preventative Predictive Maintenance Maintenance 17- 19 11- 13 7- 9 17 13 8 Lm Motor Maintenance Costs in HP Year Savings 2 500 Year for 1 250 HP Motor Figure A-3. Predictive maintenance practices for electric motors can reduce maintenance costs by 50 .1 Current Maintenance Methods Differ Significantly from Best Practice SMRP surveyed their membership in the Spring 1996 and reported that only 44 of their membership have integrated reliability and maintenance programs. Surprisingly 17 of the companies surveyed reported the absence of any reliability or predictive maintenance program. Maintainability Reliability and Maintainability Figure A-4. Do you have a reliability and maintainability process 1 Appendix A Useful and interesting Statistic 605 Deloitte and Touche in their study Maintenance Practices and Technologies report that management recognizes the importance of maintenance. Diagnostics and predictive maintenance practice rank as high as traditional cost reduction programs. Min. Plant Down Time Skill Training PM Program JMBMMMMMMMMI Employee Motivation JwiWBMMWMMWMI Cost Reduction -MBhMHMBWMMMWi ------------------------------ 1K No Importance Diagnostics I . _. . . . H Extremely Important Predictive Maintenance I --------------------------- 1 1 -------------1--------1--------r 0 20 40 60 80 Figure A-5. Maintenance programs recognized to be of The same Deloitte .
