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Tpm Equipment Reliability Engineering
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- 2. CONCEPT OF EQUIPMENT RELIABILITY Whydo Equipment chronic losses arises and not decreases? The reason is, in brief low equipment reliability. Reliability here means the probability that facilities, equipment, and system will function as required during a specified period under a given condition .can also be termed the probability that no problems(defects or breakdown) will occurs during given period. Low reliability leads to the occurrence of failures or defects, because their occurrence cycle is short ,the losses become chronic.
- 3. CLASSIFICATIONS OF RELIABILITY Reliabilityconsists of INHERENT RELIABILITY and the USE RELIABILITY .The inherent reliability results from the design, becoming fixed at the stage of design and manufacturing. The use reliability results from the way the equipment is used ,arising poor usage condition or method of use.
- 4. INHERENT AND USERELIABILITY CAN BE SUBDIVIDED AS FOLLOWS AND OVERALL RELIABILITY WILL BE THEIR CUMULATIVE PRODUCT. INHERENT RELIABILITY DESIGN RELIABILITY MANUFACTURING RELIABILITY INSTALLATION RELIABILITY USE RELIABILITY OPERATIONAL RELIABILITY MAINTENANCE RELIABILITY
- 5. 1.DESIGN RELIABILITY Steaming fromdesign, their reliability is affected by the following factor Jigs /tools unmatched to parts shapes Problems in the mechanism itself Problems in the selection of parts Problems in the detection of parts Short parts life
- 6. 2.MANUFACTURING RELIABILITY This reliabilityderives from poor manufacturing or assembly of parts ,i.e problem occur because of incomplete manufacturing/assembly of parts. They are due to the following factors, •Problems in the accuracy of parts size •Problem in the parts shapes •Problem in assembly arrangements
- 7. 3.INSTALLATION RELIABILITY This reliabilityis affected by poor installation arrangements, problems occur because of incomplete or improper installation due to the following factors: •Occurrence of vibration due to poor installation arrangements •Insufficient levelness •Incomplete piping/wiring/fittings due to poor installation arrangements
- 8. 4.OPERATION RELIABILITY This reliabilityis affected by poor operational behavior. They are due to the following factor: Operation errors Setup and adjustment error Lack of through preparation of basic condition Use condition error
- 9. 5.MAINTENANCE RELIABILITY This reliabilityaffected by poor maintenance quality. Problem occurs because of incomplete maintenance ,due to such factors as: Parts replacement error Poor assembly accuracy
- 10. STUDY ON THEMANNER OF USING EQUIPMENT Generally, problems resulting from poor USE RELIABILITYS are many ,while those from poor design reliability are few. When breakdown or defects occur ,it is necessary to examine to which type of reliability decline they are related. Low reliability is considered to arise because research on the manner of using equipment is insufficient. This research is essentially the study of the expertise in using the equipment, consisting of technology for using the equipment skillfully and to optimum effect.
- 11. To develop thetechnology for optimal us of equipment, research is required on the conditions to be possessed by equipment to attain better quality ,to raise the utilization ration(time ,speed),and to enhance operability /maintainability ,and research on the basic arrangement regarding the equipment proper and peripheral devices to obtain best performance from the equipment. Technology for skillful use of equipment necessitates research on the role of the operator in operation, adjustment, detection and handling of abnormalities to keep the equipment in an optimum state. STUDY ON THE MANNER OF USING EQUIPMENT
- 12. CONCLUSION Even if thetechnology for optimum use of equipment is fairly advanced ,problem occur if the capability of the operators who use the equipment is insufficient, and they do not perform their work as they should. Conversely, even if the operation skill of operators are excellent and they perform their work properly, breakdown may unavoidable if the equipment itself has the problems. In either case, effectiveness will be halved. Therefore ,it is necessary for both operator capability and equipment condition to be on the same level, just like two opposing wheels on a car .only then overall efficiency improvement of a MAN-MACHINE system become possible.