What Is Predictive Maintenance?

Equipment predictability refers to the activity of predictive maintenance based on process data to avoid maintenance problems by predicting possible failure modes. It is a required means and method for predictive maintenance of equipment. It performs statistics / classification / trend analysis through the actual use patterns of equipment use frequency / maintenance frequency / usage time and replacement of equipment spare parts in order to develop preventive maintenance of equipment. Frequency (annual equipment maintenance plan), equipment spare parts control plan, purchased equipment and purchased equipment spare parts manufacturers, etc. provide the basis.

Device predictability

Right!

Equipment predictability refers to the activity of predictive maintenance based on process data to avoid maintenance problems by predicting possible failure modes. It is a required means and method for predictive maintenance of equipment. It performs statistics / classification / trend analysis through the actual use patterns of equipment use frequency / maintenance frequency / usage time and replacement of equipment spare parts in order to develop preventive maintenance of equipment. Frequency (annual equipment maintenance plan), equipment spare parts control plan, purchased equipment and purchased equipment spare parts manufacturers, etc. provide the basis.

Chinese name

Device predictability

Alias

Predictive maintenance

aims

Activities to avoid maintenance issues

Nature

Terminology

Equipment predictability refers to: also known as predictive maintenance

Activity based on process data to avoid maintenance issues by predicting possible failure modes.

It is a required means and method for predictive maintenance of equipment. It performs statistics / classification / trend analysis through the actual use patterns of equipment use frequency / maintenance frequency / usage time and replacement of equipment spare parts in order to develop preventive maintenance of equipment. Frequency (annual equipment maintenance plan), equipment spare parts control plan, purchased equipment and purchased equipment spare parts manufacturers, etc. provide the basis.

Equipment maintenance methods are mainly divided into planned maintenance and unplanned maintenance. Among them, planned maintenance is divided into two types: preventive maintenance and after-the-fact maintenance. Preventive maintenance includes regular maintenance and predictive maintenance. There are two types of unscheduled maintenance: emergency maintenance and improvement maintenance. Introduction of various types of equipment maintenance:

1. Preventive maintenance: Preventive maintenance refers to the pre-emptive measures taken before the equipment fails. It includes regular maintenance and predictive maintenance.

2. Periodic maintenance; Periodic maintenance refers to periodic maintenance before equipment failure occurs. Including regular inspection, regular oil filling, regular replacement and disassembly repair. Traditional equipment includes primary maintenance, secondary maintenance, intermediate repair and overhaul.

3. Predictive maintenance: Predictive maintenance refers to the maintenance activities that are performed in order to maximize the use of equipment or components, through spot inspection or diagnostic methods, to predict and judge the life of major components.

4. Improved maintenance; Improved maintenance refers to activities that proactively improve the shortcomings of existing equipment (such as structure, material, parameters, or appearance) to extend the life of the equipment.

5. Post-hoc maintenance: Post-hoc maintenance refers to post-processing methods such as repair or replacement of equipment under functional paper or failure to stop. It still belongs to the scope of planned maintenance and is a conscious or compelling processing activity.

6. Emergency maintenance; emergency maintenance is unscheduled maintenance, there is no precaution in advance, and emergency handling activities due to sudden failures are like "fire fighting". Predictive maintenance is a simple diagnosis and trend management of equipment deterioration, and if necessary, performs more accurate measurement and diagnosis, and then implements maintenance maintenance methods.

It should be noted that predictive maintenance is the highest level of equipment maintenance activities, and it must be based on effective daily maintenance, regular maintenance and improved maintenance. If the above work is not done well, there are still a lot of sudden failures, and professional maintenance personnel are busy with "fire fighting", you must not carry out predictive maintenance, because professional maintenance personnel have no opportunity (time, time) to learn and practice equipment diagnostic technology Exploring equipment deterioration trends so that you certainly won't get the expected results. This requires our factory to be very good at daily equipment maintenance. The purpose of predictive maintenance is to greatly reduce maintenance costs through a professional maintenance system. Its implementation content is:

1. Handle small problems in time, so that early detection of failures and early maintenance measures are taken;

2. Predict failures and failures, and pay attention to the prediction of functional failures;

3. Predict the service life, predict the remaining life of the equipment according to the degradation, wear and other conditions.

Before advancing predictive maintenance:

1. Determine if it is a predictable failure;

2. Specify whether the unit is the equipment or the component;

3. Understand performance degradation, such as wear status;

4. Analyze and determine parameters related to functional degradation;

5. Determine the instruments and methods for measuring related parameters;

6. The relationship between physical investigation and verification;

7. Set critical reference (limit value of degradation);

8. Tracking management.

The main points of other predictive maintenance activities are:

1. Education and training of professional maintenance personnel for equipment diagnosis technology;

2. Simple diagnostic training for operators;

3. Define and implement the basic rules to be followed;

4. Take into consideration the overall situation and advance within the entire equipment maintenance system.

Predictive maintenance must also define what equipment diagnostics are. Device diagnosis refers to the technology of quantifying the deformation, degradation, failure, strength, and performance of the device, identifying the reliability or abnormality of the device, predicting future trends and determining the best countermeasures. There are two types of simple diagnosis and accurate diagnosis. The content of equipment diagnosis includes: actual measurement of the deterioration status and collection of necessary data; analysis of the data to determine the limit of abnormality determination; determination of the best maintenance measures and timing. The main equipment diagnostic technologies are: rotary equipment diagnostic technology; structural diagnostic technology; lubrication and wear diagnostic technology; electrical control diagnostic technology.