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Concepts of preventive maintenance
Meaning of preventive maintenanceIn peacekeeping operations, preventive maintenance is destined to the preservation of equipment or facilities by means of realization of examination and repair to ensure its proper functioning and reliability that. Preventive maintenance is performed on equipment in operating condition, as opposed to corrective maintenance that repairs or put in operating condition those who stopped working or are damaged.
The first objective of the maintenance is to prevent or mitigate the consequences of the failures of the team, managing to prevent incidents before they occur. Preventive maintenance tasks include actions such as replacement of worn parts, oils and lubricants, etc. Preventive maintenance should avoid equipment failures when they occur.
Some of the most common methods to determine that preventive maintenance processes must be carried out are the manufacturers recommendations, legislation, the recommendations of experts and the actions carried out on similar assets.
Types of preventive maintenance
Preventive maintenance can be done according to different criteria:
Scheduled maintenance, where revisions are carried out by time, mileage, hours of operation, etc. So if we put such a car, and determine a scheduled maintenance, the pressure of the wheels is reviewed every fifteen days, the engine oil is changed every 10,000 km, and the distribution chain every 50,000 km.
Predictive maintenance, attempts to determine the time in which repairs by a follow-up which determine the maximum period of use before be repaired be carried out, in the example of the car if we know that the drawing of the wheels must be 2 mm minimum and our car's wheels have 4 mm and wears 0.5 mm every 8,000 km can predict the moment in which we will have to change the wheels.
Maintenance of opportunity is that is taking advantage of periods of non-use, thus avoiding stop equipment or facilities when they are in use. Returning to the example of our car, if we use the car only a few days a week and intend to make a long journey with him, it is logical to make revisions and repairs in the days in which we do not need the car, before starting the journey, thus guaranteeing their proper functioning during the same.
Definition of preventive maintenanceThe programming of inspections, both performance and safety, adjustments, repairs, analysis, cleaning, lubrication, calibration, which should be carried out periodically with base to an established plan and not an operator or user demand; It is also known as planned preventative maintenance - MPP.
Its purpose is to anticipate failures while maintaining optimal systems of infrastructure, equipment and production facilities in full operation levels and efficiency.
The hallmark of this type of maintenance is the inspecting computers and detect faults in its initial phase, and correct them in a timely.
With a good preventive maintenance, you get experiences in determining causes of repetitive failures or safe on a computer operating time, as well as defining weak points of installations, machines, etc.
Advantages of preventive maintenance
Reliability, teams operate in better conditions of security, that referred to his State, and its operating conditions.
-Reduction of downtime, downtime of computers/machines.
-Longer duration, equipment and facilities.
-Reduction of inventories in warehouse and therefore their costs, because that fit the parts of greater and lesser consumption.
-Uniformity in the workload for maintenance personnel due to a schedule of activities.
-Lower cost of repairs.
Phases of preventive maintenance
Technical inventory, with manuals, drawings, characteristics of each team.
-Technical procedures, lists of works to be carried out periodically,
-Frequency control, precise indication of the date to carry out the work.
-Registration of repairs, spare parts and costs that help plan.
Ask us about this form of maintenance, we have the expertise for the development of the work with proven success stories.
Concept of preventive maintenanceMany accidents or incidents that endanger safety at the workplace are caused by lack of preventive maintenance on equipment and facilities. In addition preventive maintenance prolongs the life and performance of all teams. We must be aware that it is a necessary investment; computers over time deteriorate and to prolong its life and make more profitable your cost, it is necessary to give them a proper maintenance.
What does preventive maintenance?
Preventive maintenance constitute an action or series of actions necessary to lengthen the life of the equipment and facilities and prevent the suspension of work activities by unforeseen events. It is intended to plan periods of stoppage of work at specific times, to inspect and perform equipment maintenance actions, thereby avoiding emergency repairs.
A planned maintenance improves productivity by up to 25%, 30% reduces maintenance costs and extends the life of machinery and equipment up to 50 per cent.
Traditional preventive maintenance programs, are based on the fact that the equipment and facilities work eight hours per day and forty hours per week. If machines and equipment operating longer, programs should be appropriately modified to ensure proper maintenance and a durable equipment.
Prevention is better...
The area of activity of preventive maintenance is of vital importance in the field of the implementation of operations in the industry of any size.
Depends on good maintenance not only efficient operation of facilities and machines, but it is also, be carried out rigorously to achieve other objectives such as making computers have long-lasting periods of life, without exceeding what was budgeted for maintenance.
Conventional strategies of "repair when the fault occurs" no longer serve. They were valid in the past, but now if you want to be productive is you have to be aware that wait for the fault occurs is incurring excessively high costs (loss of production, deficiencies in the quality, downtime and loss of profits). Therefore companies should carry out processes of prevention of these faults by a proper maintenance program.
Has maintenance historically evolved?
The evolution of maintenance has been structured in four generations:
• 1st generation: total corrective maintenance. Expected to occur the breakdown for repair.
• 2nd generation: begin to perform maintenance tasks to prevent breakdowns. Maintenance work become cyclical and repetitive, with a certain frequency.
• 3rd generation: is implanted to condition maintenance. I.e., they begin to evaluate equipment or facilities that suffer damage more often to stay alert of its operation and carry out the own maintenance work.
• 4th generation: implanted systems of continuous improvement of the preventive and predictive maintenance, the Organization and execution of maintenance plans. Groups of improvement and follow-up of actions are established. I.e. maintenance for all areas is implemented.
You need to always have a system of continuous review of maintenance plans to be better competitors and thus raise the market position. Far as maintenance is concerned, only valid strategies today are those aimed both to increase the availability and effectiveness of key equipment for production, reduce maintenance costs, always within the framework of the security of the equipment and personnel.
How is a preventive maintenance program?
Risk analysis is a preliminary step to the realization of a maintenance plan, considers different faults that are often produce and the consequences thereof. The first thing that must be taken into account is that there may not be plans that completely prevent all failures or breakdowns of all teams since their cost would be very large, both in terms of human, financial, logistical, and so on.
Why the risk analysis includes the definition of the limits under which you want to operate, and according to them design the maintenance plans to stick to them.
Risk analysis applied to maintenance is based on studying the consequences produced by failures in the machines, since the following four views:
• Operational implications, in which the failure occurs disorders in production or quality that eventually translate into times lost in the productive process, and therefore losses in earnings.
• Consequences in the security, in which the ruling may affect to a greater or lesser extent to the safety of the staff of factory.
• Environmental consequences, in which the ruling may affect the environment or to the environment, whereas the legal provisions that exist in this regard.
• Impact on costs, are their own repair failure brings with it and that sometimes can be of extraordinary importance.
For this process to take focuses on work center, divide into parts according to the functions performed in each one and their relationship with others to detect high-risk or critical areas (which if you were to stop to give them maintenance practically for the entire company) by measuring each area according to each of the four previous consequences, in the following manner:
• For each area is determined in a general way one scale of severity of the consequences (from negligible to catastrophic) quantifying each one of the parts of the scale with the corresponding units of measurement.
• Also determines a scale of probability or frequency of occurrence of failure in time (from very unlikely to very frequent).
Based on this analysis of the existing risks in the workplace and each of its areas, is that some kind of preventive maintenance plan must be implemented. This drastically reduces the likelihood of accidents at work, gives us an estimated cost necessary for maintenance and economic benefits, and even large and unfortunate disasters can be prevented.
What is preventive maintenanceWithin a process of selection and acquisition of laboratory equipment should be considered important aspects such as types of maintenance for optimal performance of the unit throughout its useful life, as well as the House manufacturing, to which we are acquiring the unit, if it has local representative with guaranteed comprehensive service both from the point of view of advice as a technician.
The main objective of the preventive maintenance in a laboratory equipment is to ensure the programming of inspections on operation, safety, adjustments, repair, analysis, cleaning, lubrication and calibration of the unit. So that it is carried out, it should be planned periodically based on an established plan and not a demand of the operator or user.
It is of utmost importance to perform preventive maintenance, since only with them the technician will be able to inspect equipment and detect faults in its initial phase, correcting them at the right time and saving you money to his laboratory.
This can bring you several advantages, among which we can mention:
• The equipment shed results more reliable and accurate, since they operate in better conditions of security and performance.
• Reduce the time dead or stopping time of computers/machines.
• Prolong the useful life of the same.
• Reduce the cost of repairs in the event of faults.
• Reduce the impacts to the environment.
The frequency of preventive maintenance in an instrument is given by a number of factors ranging from the suggestion made by the manufacturer to the frequency of use of the customer. Usually this frequency can be modified by the continuous evaluation of the local provider as the regime of operation of the instrument in particular (temperature, relative humidity, noise, pollution, frequency of average use, etc.). When the teams are located in more aggressive areas such as for example areas of production or simply laboratories, where environmental conditions are not the required minimum, can that maintenance frequency should be increased.
Normally the minimum recommendation is 2 preventive maintenance a year, however most advisable is to wait for the evaluation of the suppliers and maintain equipment calibrated and maintained with a single company, in particular that has authority in Venezuela for the repair of such equipment. And it is only she has certification and qualification to perform such repairs, access to original spare parts as well as access to experts in the technology, because she makes all the updates that the parent company demand to your technical staff.
Then, what it would be appropriate to optimize preventive maintenance?
1) The guarantee of availability of service, through a local provider trained by Headquarters that advise in the pre-installation of the instrument, the training of the user and therefore the final installation of the same as well as the after-sales advice.
(2) The creation of a contract for preventive maintenance between the client and the authorized agent, on the basis of the given frequency taking into account all the factors that may be involved.
(3) The availability to maintain a stock of consumables, parts and spare parts suggested, based on the statistics generated by the service provider as well as factory.
Covering these three points we would be establishing the necessary foundation for an optimal scheme of prevention at the maintenance level.
In the next installments we will discuss in more detail with regard to preventive information, which by experience we handle installed units, in terms of its operation. In this space you can find out many aspects to be applied in the unit that already has. We recommend that you visit often so you are aware of useful information.
Meaning of preventive maintenanceMaintenance is the word that allows us to designate that activity from which it is plausible to maintain a product, a machine, one computer, among other things, to make it work properly, or failing that, which allows to practice you some of these a repair in the event that he demands, so that it can regain its traditional operation.
Mostly, all appliances, machines, machinery, devices, among others, need at some point in their existence to receive maintenance, either as indicated, to ensure that they continue to operate satisfactorily, either to repair that damage which arose suddenly.
Meanwhile, who deploys the activity of maintaining or correcting faults that may arise on the equipment or machinery is popularly known as a mechanic or technician and notably to carry out its activity must have a deep knowledge of the parts making up the appliance or apparatus in question and also its operation.
There are two types of maintenance, the maintenance of conservation and maintenance of update. The conservation aims to compensate for wear and tear suffered by the equipment as a result of the passage of time; and of update for its part aims to counteract the passage of time in technological matters, i.e. it will try aggionarlo you can meet current needs.
Meanwhile, within the first we find ourselves with corrective maintenance and preventative maintenance, which is which will occupy us here.
Thanks to preventive maintenance, it is possible to ensure the proper functioning of the equipment since this type of maintenance deals exclusively with the relevant revisions and making repairs that prevent the device to break down. I.e., its main mission is to mitigate potential failures.
It differs from the corrective maintenance, precisely, because it keeps the device in operation, while the corrective repairs to the appliance that stopped working.
And within the maintenance we can find with three modes: programmed (the review is performed by time); predictive (it deals with determining the precise moment that the team will need to be revised, therefore, it predicts the maximum usage time); and opportunity (is taking advantage of those moments in which the equipment is not used, avoiding in this way out of activity).