Corrective Action: Action taken to eliminate the causes of a nonconformity, defect or any existing undesirable situation, to avoid its repetition.
Preventive Action: Action taken to eliminate the causes of a nonconformity, defect or any potential undesirable situation, in order to prevent it from occurring.
glossary-terms-maintenanceActivities: It is the set of actions that are carried out to meet the goals of an operation program or subprogram, which consists of the execution of certain processes or tasks (through the use of assigned human, material, technical, and financial resources to the activity with a determined cost), and that is in charge of an administrative entity of intermediate or low level. It is a programmatic category whose production is intermediate, and therefore, is a condition of one or more terminal products. Activity is the lowest level budgetary action and indivisible for the purposes of formal resource allocation. Set of operations or tasks that are performed by a person or administrative unit as part of an assigned function.
AM - Asset Management (Asset Management): Strategy that encompasses the tools and methodologies that allow the systematic planning and control of physical assets throughout their lives, this includes, design, specifications, construction or purchase of the asset, operation, maintenance and modifications or redesigns while it is in use, in addition, and its disposition when it is no longer required.
Benchmarks (Reference): This is a world-class performance standard relative to a specific performance metric; represents and quantifies the “best practices” of a specific operation or function within the operation according to the specific Performance Metric. A Benchmark is determined and documented, representing the current time or sustainable performance over a relative time for some metric. A benchmark may vary by product.
BSC - Balanced Scorecard: It is a tool to measure the activities of a company in terms of its vision and strategy. It continuously measures how the objectives that the strategy seeks are achieved, it also expresses the objectives and initiatives necessary to support the strategy.
Life Cycle: Period of time during which an Item retains its capacity for use. The period goes from its purchase until it is replaced or is subject to restoration
Shutdown / Stoppage: An event that takes a machine out of service. The Shutdown can be scheduled or unscheduled and includes all types of maintenance and repair activities except: lubrication shutdowns, fuel and running inspections during lubrication and fuel refilling. Operational stops, for example; shift change, collation, etc., are not included as a close / stop event. Grouped repairs count as one stop. Accounting for a stop is independent of the duration of the event or complexity.
Client: Recipient of a product or service provided by the supplier.
External Client: Person or organization that receives a product or service and that is not part of the organization that provides it.
Internal Customer: Person or department that receives a product, service or information (Output) that comes from another person or department of the same organization.
Coaching: It consists of the orientation that an external professional (coach) gives to a manager to improve his skills, that is, make him much more effective in his performance.
Competences: The contribution to the success of a person in a job. This concept means that when evaluating, training, developing and measuring, they take into account the so-called "differentiating factors of success", which makes people better in a position and will determine who is better positioned or better conditions to develop that position successfully.
Technical Competences: We speak of technical competences, when we refer to the set of knowledge, procedures, attitudes and capacities that a person possesses and that are necessary to develop their job.
Reliability: It is the probability that a team fulfills a specific mission under certain conditions of use in a given period. Relationship between producer and machine. Reliability is a measure that quantitatively summarizes the functionality profile of an item and helps when selecting equipment from among several options.
The reliability study is the study of equipment or component failure. If you have faultless equipment, the equipment is said to be 100 percent reliable or to have a probability of survival equal to one. By performing a reliability analysis on a piece of equipment or system, we obtain valuable information about its condition: probability of failure, average time to failure, stage of life of the equipment.
- Reliability Function: It is the probability that an element does not fail after instant t, that is, not before t, not even at instant t:
- Failure Rate Function: It is the probability that an element that is working at time t stops working on the interval (t, t + dt):
λ (t) = f (t)
Defect: Event in the equipment that does not prevent its operation, but that in the short or long term may cause its unavailability.
EAM - Enterprise Asset Management: The name given by a group of authors to maintenance information systems (CMMS), varies in relation to classic CMMS, in adding deeper aspects of asset accounting issues, but it is seen more as a commercial strategy than as a real improvement of the application.
Equipment: Element that constitutes the whole or part of a machine or installation that, due to its characteristics, has its own data, history and repair programs.
ERP - Enterprise Resourse Planning ( Denomination of Enterprise Resources): Denomination with which the business information systems that make up the different areas of companies are known, such as; purchases and inventories, customer service, accounting, fixed assets, maintenance, human resources, among others.
Specification: Document that establishes the requirements that a product or service must meet.
Status: (Latin status status, status condition). It is the situation or relative state of an object within a set. For example: active, inactive, suspended, etc.
Suitable Estimator of Condition (Relevant Condition Predictor, CPR) is an observable parameter describing the condition of the item at each instant of the operating time. Normally, this parameter is directly related to the shape, geometry, weight and other characteristics that describe the condition of the considered element. Examples are: the thickness of the pipe walls, the brake pads and brake shoes, the brake disc, the clutch disc, the length of cracks, the tread depth of a tire, the diameter of a cylinder, etc.
Generally, the condition of the element or system is satisfactory as long as the RCP maintains a value that does not reach its critical level, RCP cr. At this point the preventive maintenance (PM) task must be performed because the failure will occur as soon as the parameter reaches its limit value, RCP lim.
It is important to emphasize that the RCP cannot have identical values for two or more instants of time. This means that the RCP increases or decreases continuously with the operating time
Strategy: The term strategy comes from the Greek word «strategos», formed by stratos, which means army and ag, which means to lead; However, this does not appear in the economic and academic context until Von Neumann & Morgenstein unveiled their famous Game Theory in 1944 (Menguzzato & Renau, 1991 and Grant, 1996). According to Quinn (1993) in the field of administration, a strategy "is the pattern or plan that integrates the main goals and policies of an organization and, at the same time, establishes the coherent sequence of actions to be carried out". Also, it is identified as "the art of creating and projecting plans to achieve a specific goal."
Facilitator: From English facilitator, a word widely used in Latin America that means formator.
Failure: It is said that a product / service or process fails when it does not carry out satisfactorily the performance expected of it (its function). In specific terms, a functional failure is defined as the inability of an asset to perform a function according to the performance standard acceptable to the user. For example, consider a pump designed to pump 4,000 liters per minute that is losing its pumping capacity below 3,200 liters per minute. Assuming that the low pumping rate does not meet the process requirements for this pump, one must consider that it has functionally failed - the machine continues to operate, but does not operate according to the required design specifications and probably needs to be stopped to troubleshoot. the problem.
Catastrophic Failure: When we refer to a catastrophic failure, we commonly refer to a sudden failure in a machine / equipment that results in a cessation of operation. Catastrophic failure can cause damage not only to the specific component in question, but can also cause collateral damage. Take for example a piston ring that fails while the engine is running, causing the connecting rod to go through the cylinder wall, or a fan bearing that fails due to lack of lubrication forcing the fan or motor housing It literally shoots out from its base.
Functional failure: inability of an item, component of equipment, or equipment to meet a desired performance standard.
Hidden Failure: A hidden failure is a functional failure that is not self-evident to the operating team (or maintenance personnel) under normal operating circumstances. Example is; The pressure gauge indicates a normal condition but is stuck and cannot change its position, and transmits an erroneous signal hiding a potential fault.
Potential Failure: Identifiable physical conditions indicating that a functional failure will occur or is in the process of occurring.
FMEA - Failure Mode Effect Analysis: Methodology to analyze the problems and potential failures of an asset or process, can be applied at any time in the development of the life cycle of an asset; facilitating the taking of actions and being able to propose strategies to face the problems and in this way, improve their reliability. The FMEA is used to identify potential failure modes, determining their effects and consequences, and identifying actions to mitigate or control the effects of each failure mode.
FMECA - Failure Mode and Critical Effect Analysis: It is based on the FMEA analysis but additionally qualifies the risk of failure modes using the priority risk index (RPN).
Failure Frequency: Number of failures for a component, equipment or resource per unit of time (month, semester, quarter or year) or by some multiple of hours of operation (for example, per 1,000 hours of operation)
FTA - Failure Tree Analysis: Analysis method used to obtain the causes of root failure, making a "map" or tree of causes at different levels.
Guarantee: Assurance of the fulfillment of an obligation through the affectation of a specific thing or the commitment of payment by a third party in the event of default by the original debtor.
Quality Management: Activities of the business function that determine the quality policy, objectives and responsibilities, and that are implemented through quality planning, quality control, quality assurance and quality improvement, within the framework of the quality system.
Total Quality Management: Form of management of a body focused on quality, based on the participation of all its members, and which aims at long-term success through customer satisfaction and providing benefits for all members of the body and for society.
Performance Management: Application of management by competencies to achieve a fair system, where the same facts and attitudes have a similar evaluation in the different people of the company, through the setting of performance objectives.
Document Management: Document Management consists of the adequate treatment of information to optimize its use, which is obtained through the application of technology and appropriate procedures in each case. Documentation Management allows organizations to have all the information in it, in a simple way, and retrieve it accurately and immediately.
Total Calendar Hours: Total time in the period analyzed, for example; 8,760 hours / year, 720 hours / 30 days a month, 168 hours / week, etc.
Scheduled Hours: Time the machine is scheduled for operation. Typically determined by the Mine Planning and Operations Department jointly total production goals.
Unscheduled Hours: hours outside the plan, lost time resulting from accidents, strikes, weather, religious acts, and observed holidays or vacations, etc., (typically defined by the customer or contained in the customer support agreement or MARC contract).
Available Hours: time the machine is able to operate in the desired operation.
Hours of Operation: Time the machine is currently operating in the desired function.
Stand-by hours: Time in which a machine is available for operation but is not used, for example, the operator is not available, on truck supply, etc. Also known as line-by-hand hours.
Observation: The following graph describes and illustrates our interpretation of the time elements taken by the various categories of equipment in mining operations.
| Total Calendar Hours | ||||||
| Scheduled Hours |
Hours No scheduled (Outside Plan) |
|||||
|
Available Hours (Mechanical Availability; operational) |
Hours of Detention
Scheduled Maintenance, No Scheduled and Repairs (Mechanical unavailability; non-operational) |
|||||
|
Hours of Operation (Job Machine) |
Delays |
Hours of Wait (Hours Stand-by) |
Maintenance and repair |
Delays |
||
| Hours
Delay Production |
Hours
Delay Operational |
Hours Delays Repair | ||||
Production Delay Hours: Time that the machine is operating but is stopped with the engine running due to blasting, load waiting time, etc., Production waiting hours are frequently not counted separately and are included in the operating hours. On the other hand, some dispatch systems track production delay times in an effort to minimize and manage these. In other cases, lost hours resulting from production delay are reconciled and not counted against machine availability.
Hours Operational Delay: Time in which the machine is available for operation but is not used due to shift changes, collation, meetings, mass, etc., As in the case of production delay hours, the lost hours resulting from operational delays are reconciled and never accounted against machine availability. On the other hand, the policy in many mines is to ignore operational delay hours completely and therefore, operational delay hours are not credit as scheduled or available hours.
Hours Stop: Time when the machine is not available for operation; out of service for all forms of maintenance, repair and modifications. Includes time for inspections and diagnostics, as well as any delay or time stopped by labor, available ship, parts, tools, literature, repair support equipment, decisions of what to do, etc. They can be scheduled or unscheduled.
Hours Delay Repair: Time that a machine is stopped for repair due to an unavailability of labor, part, facilities, equipment or tools. Typically it is not well documented in many machine stop histories but is nevertheless included, not yet recognized, as part of the machine stop record.
R&D: Department of a company whose exclusive dedication is Research and Development.
Key Performance Indicators (KPI's): Metrics or measures that are used to assess how well a resource or asset performs its function. A KPI is a quantifiable measure that an organization can use to measure its performance in terms of reaching its critical success factors. KPI's are a group of key indicators that can be calculated or measured through the variables of a process, measurement is key because what it indicates allows you to monitor the objectives of a process and set goals for them. A KPI can usually be compared to some benchmark, such as design ability, accepted industry measurements, or accepted national or international values.
Relevant Condition Indicator (RCI): This is an observable parameter that indicates the condition of the element or system, at the time of verification. Classic examples are: The levels of: pressure, power steering fluid, vibration, noise, oil, water, brake fluid, antifreeze, windshield washer fluid, engine idle speed, alternator belt tension or of the water pump, the path of the clutch pedal, or the handbrake.
The condition of the elect or system will be satisfactory as long as the RCI value is maintained without reaching a critical level, RCI cr. When this level is reached, the necessary maintenance task must be carried out, because the fault will occur as soon as the parameter reaches its limit value, RCI lim.
Maintainability Engineering (Maintenance): it is a scientific discipline that studies the complexity, factors and resources related to the activities that the user must carry out to maintain the maintainability of a product and that develops methods for its quantification, evaluation and improvement.
Inventory: Quantity of each existing product at a given time, and ordered list in which it is detailed.
Physical Inventory: Stock counting, checking on-site and through a personal count, the available quantities of each product.
Security Inventories: It is the additional inventory that is maintained to protect against changes in expected sales or delays in production or supply of products. Maintaining this inventory increases the average inventory held during the year and as a consequence, the annual inventory maintenance cost also increases.
ISO - International Organization for Standardization: founded in 1946, it is a world federation of national standardization organizations from around 130 countries, one from each country. ISO is a non-governmental organization whose mission is to promote the development of standardization in the world to facilitate the international exchange of goods and services, and also to develop cooperation in the fields of intellectual, scientific, technological and economic activity. ISO's work results in international agreements that are published as international standards (or norms). ISO is not an acronym but is derived from the Greek word "isos" which means "equal".
ISO 14000: Set of international standards to ensure the conservation of the environment.
ISO 9000: Set of 5 International Standardization Standards on Quality Management and Quality Assurance developed to help companies effectively document the elements to be implemented to maintain an efficient Quality System. The standards are not specific to any industry, product or service. They were developed by the International Organization for Standardization (ISO), an international standardization agency composed of national standardization organizations from 91 countries.
IT - Information Technologies (Information Technologies): A name for the set of tools, usually electronic in nature, used for the collection, storage, treatment, dissemination and transmission of information.
JIT - Just in Time: It is a philosophy that seeks with its application to produce the necessary quantities at the right time and with the minimum resources available, its objective is to achieve comprehensive excellence through the elimination of waste and permanent solution of problems through the use of statistical and managerial tools that guarantee the maintenance of the solution and continuous improvement. The Just in time system was created in post-war Japan, in an extremely precarious economic context, and its basic concept was devised by Taiichi Ohno when he was director of the Mechanization Department of one of Toyota's factories.
JSA - Job Safety Analysis: Analysis tool focused on examining specific tasks or procedures to identify risks and define controls; It is used in the industry to write security procedures.
KIT: Word widely used in commerce that means «set of parts that come with manufacturer's instructions for assembly. It has other meanings: equipment (of elements), case, package or box with all the necessary elements to do something: «a first aid kit» (in this case a case with everything you need).
Leadership: Set of relational and task factors applied in the managerial function to mobilize, attract or excite people directed towards certain goals or objectives.
Logistics: The process of planning, implementing and controlling the efficient flow and storage of goods and related information, from the point of origin to the point of consumption.
Integrated Logistics: When each member of the distribution chain gives added value to the product.
Lubrication: Preventive Maintenance Services, where additions, changes, and analysis of lubricants are made.
Labor: It is the physical or mental effort used in the manufacture of a product.
Direct Labor: It is the one directly involved in the manufacture of a finished product that can be easily associated with it and that represents a significant cost of labor in the elaboration of the product.
Indirect Labor: They are all those workers who do not have direct contact with the transformation of materials into finished products.
Maintainability: Probability and / or ease of returning equipment to operating conditions or a reference state, over time and using prescribed procedures, at the desired level of confidence, with the specified personnel, the necessary skills, the indicated equipment, the technical data, operation and maintenance manuals, the maintenance support department and under the specified environmental conditions. Relationship between the maintainer and the machine.
Maintenance: Set of procedures and measures that allow the operation of devices, objects and systems to be extended. Tasks necessary for an equipment to be preserved or restored so that it can remain in accordance with a specified condition.
This element includes the group of people who offer and provide the equipment maintenance service (in its two dimensions: body and function) to the departments (or industries) that produce goods or services, using the resources available to them.
Planned Maintenance: Maintenance in which, for a team or facility, the set of interventions to be carried out in the medium term has been analyzed and decided, the frequency or conditions that will determine the performance of each intervention, as well as the Procedures and Work Instructions, tools, instruments, equipment, spare parts and materials and the personnel that must execute them, together with the time that will be used in each case.
Scheduled Maintenance: Maintenance whose date or period of execution has been established in order to obtain the best match between needs and means and the shortest execution time of scheduled interventions.
Corrective Maintenance: It is known as a type of reactive tasks, based on replacing, carrying out interventions or repairing an asset (equipment or failed components) when it ceases to fulfill its function.
The Failure Based (FB) maintenance policy is a method in which corrective maintenance tasks are performed after a fault occurs, in order to recover the functionality of the element or system considered. Therefore, this maintenance method can be described as fault repair, post-failure, or unscheduled.
Predictive Maintenance: Activities that aim to identify maintenance needs in advance. Tasks to monitor the condition and wear of one or more pieces or components of priority equipment through symptom analysis, or analysis by statistical evaluation, which determine the exact point of its replacement.
Preventive Maintenance: Maintenance that is carried out in a pre-established way with the aim of preventing the occurrence of failures. Tasks of inspection, control and conservation of an equipment / component in order to prevent, detect or correct defects, trying to avoid damage to it.
The Preventive Task (PRT) is a task that is performed to reduce the probability of failure of the item or system, or to maximize operating profit.
Systematic Preventive Maintenance: Preventive Maintenance based on units of use of the equipment or component or in periods of time.
Selective Maintenance: Services of changing one or more parts or components of priority equipment, in accordance with the recommendations of manufacturers or research entities.
Quality Manual: It is a Document that declares the Quality Policy and describes the Quality System of an Organization (1). The Quality manual must state the Company's Commitment to Quality and must explain Why it has been decided to implement a formal Quality Management System.
(1) ISO 8402: Quality Vocabulary 3rd Ed. Geneva, Switzerland 1993.
Procedures Manual: Record of the organization's rules, strategies and action plans, as well as the mention of its structure and processes.
Continuous Improvement: Conduct by which it seeks to increase the quality of products, services or processes, through successive progress without a time limit.
Mentoring: A process of improvement, guided, flexible and with continuous support that achieves the long-term development of the participant, training them in understanding personal and organizational issues that may affect performance in their current and future role.
Method: A structured and ordered way of obtaining a result, discovering the truth and systematizing knowledge.
Methodology: Systematic way of doing a certain thing.
Performance Metric: A term used to describe the result of any process used to collect, analyze, interpret, and present quantitative data. A measure of a parameter that allows evaluating performance against some predefined goal or benchmark that is monitored. A measure used to gauge the performance of a function, operation, or business relative to past performance or otherwise.
Failure Mode: The specific way to fail; circumstances or sequences of events, leading to functional failure.
Work Order: It is the instrument by which the maintenance operating sectors are instructed to execute a task. It is a detailed, written instruction that defines the work to be done by the maintenance organization.
Standard document in which is recorded:
- Planning a required intervention.
- Work to be done Resources to use
- Carrying out the requested intervention: Work actually done
- Resources actually used.
OSHA - Occupational Safety and Health Administration: Standard norms for the accomplishment of tasks, that establish the standards of occupational safety and impact on people's health.
PdM - Predictive Maintenance: Definition used to describe maintenance by condition. (See definition of CBM).
PM - Preventive Maintenance: It is known as a type of proactive tasks based on replacing, carrying out interventions or repairing at fixed intervals, regardless of the condition of the equipment.
PMO - Preventive Maintenance Optimization: A structured process to optimize the results of existing maintenance plans in companies. Regardless of how a maintenance program has been developed, there is a constant need to review and update the program based on history of failures, process changes in operations, and the advent of new predictive maintenance technologies.
Maintenance Planning: Analysis, decision and documentation of work methods and procedures, spare parts and materials, tools, instruments, equipment, personnel and time necessary for the execution of each of the planned maintenance interventions. In addition, the specification of the frequency in the case of systematic maintenance with which said interventions must be carried out, or the conditions in the case of maintenance according to conditions, which must be verified for their execution.
Decisions regarding planned maintenance interventions are based on safety and environmental considerations and on technical-economic feasibility analyzes.
The Maintenance Plan for a team contains all the Procedures and Work Instructions (Booklets, guidelines, checklist, etc.) necessary to correctly carry out the Maintenance interventions that have been determined as necessary or convenient, to eliminate or reduce the probability of failure of the equipment.
Production: it is the department (or company) that requires and demands the maintenance service of the equipment that it uses to produce goods and services. In the broad sense of the word, all those departments or industries that carry out activities of supply or operation and distribution of goods or services; internal or external to the maintenance organization.
Maintenance Programming and Control: The Maintenance Program defines the dates on which the different interventions specified in the Maintenance Plan will be carried out and those that correspond to Backlogs or improvements.
The Programming aims to establish the best match between customer needs, maintenance and available means.
The Control of compliance of the programs in execution has the purpose of recording the contingencies and the variations produced in said programs, to update the programs that are about to start up and to investigate the reasons for these variations.
Destructive tests: They are those in which the physical properties of a material are altered and undergo changes in the structure.
Non-destructive tests: They are those in which the physical properties of a material are not altered or undergo changes in its structure.
RAM - Reliability, Availability and Maintenability Analysis: This is the name given to the method of setting business goals, making decisions and creating strategies based on the analysis of the results obtained, measured through the indicators of reliability, availability and maintainability (CMD). It is not clear because the 3 indicators to be measured are an identifiable and different tool, they are part of the so-called KPI or are in the so-called Balanced Scorecard (BSC).
RBM - Realibility Based Maintenance: Maintenance strategy based on integrating the benefits of preventive maintenance (PM) and predictive maintenance (PdM) with changes in assets, so that failures and productivity are ensured. This designation is assigned to Forrest Pardue of Computacional Systems, Inc (CSI). Like CRM, usage is sometimes imprecise. Although it seeks the same as RCM, it focuses on manufacturing processes.
RBI - Risk Based Inspection: Methodology that seeks to define the best way to inspect equipment and assets and establish the strategy based on the principles of risk; inspection efforts are directed towards high-irrigation equipment with a high potential for reducing it. Equipment risk is the mathematical product of the probability that a component will fail and the consequence of its failure. RBI uses safety, economy and environment, from the point of view of risk of failure as an efficient global, rational and economic decision framework to determine: Where to inspect ?, What to inspect ?, How to inspect ?, When to inspect?
RCA - Root Cause Analysis: It is a rigorous analysis that aims to identify the cause that caused an event.
Root Cause Failure Analysis (RCFA): Analysis of the root causes that generate a repetitive and apparently unimportant event.
RCM - Reliability Centered Maintenance: A structured process that allows defining the maintenance strategies that must be done, so that the assets continue to fulfill their functions in their operational context. For a process to be considered RCM, it must comply with the SAE JA1011 standard. The term RCM is usually applied to the process described in the Nowlan and Heap report.
Responsibility: The obligation that an individual assumes to fulfill the functions that have been delegated to him.
RPN - Risk Priority Number: Name given to the index that is calculated as the product of the severity rating, probability of occurrences and ease of detection. It is used in the FMECA analysis and provides a criticality rating.
SCM - Suply Caín Management (Supply Chain Management): Tools for logistical support, information and technology, which allows companies to deliver products and services to their customers more quickly and economically. The supply chain includes the associated activities from obtaining materials for the transformation of the product, to its placement on the market. It is also defined as the identification and administration of specific supply chains, which are critical to an organization's purchasing operations in order to support new business models including innovative ways of engaging the customer, managing risks, directing information and finances and deliberate product enthusiasm for continuous practice of continuous improvement.
Maintenance System: Set of activities and resources that are required to be used in order to ensure compliance with the maintenance function, through predicting and / or preventing failures, without losing the ability to correct failures when they occur, optimizing the long term, the Availability / Maintenance Cost relationship. These activities and resources are interrelated in such a way that if one of them is not carried out, or is carried out defectively, it will hinder or impede the timely and adequate performance of some other task and will affect the fulfillment of the common purpose.
Recoverable Systems: When someone says that a specific system is recoverable, it is understood that after failing it can recover its ability to perform a specified function. Consequently, the term recoverability will be used to describe the ability of a system to be recovered upon failure.
Six Sigma (6s): It is a methodology with a focus on data management for the elimination of defects, (dissected towards the 6 standard deviations between the mean and the closest specification limit in any process), from manufacturing to manufacturing. transnational and from product to services. The statistical representation of Six Sigma describes quantitatively how a process behaves. A defect is defined by Six Sigma as anything that is outside the user's specification. An opportunity for Six Sigma is the total number of chances that a defect will occur.
Tasks: It is the concrete action that must be carried out to obtain a desired result, expressed in a final product or by-product. A specific work phase that has an entity defined in itself. It has a well-defined beginning and end, a specific time of completion, a precise number of operations, a specific method of completion and involves, in some cases, the use of machines, instruments and tools for its execution. Performing a set of tasks involves a certain function.
Maintenance Task: A maintenance task is the set of activities that the user must perform to maintain the functionality of the element or system
Target: A desired goal; a standard so that the performance of a Metric can be measured or judged. The goal for a particular metric's performance may be somewhat arbitrary, and likely vary by specific product, application, or site. The goal is frequently determined by customer needs, expectations and / or contractual conditions, and design and manufacturing specifications.
Failure Rate: The number of failures of a component, specific equipment or of a complete asset during a specific period divided by the total number of all failures in all similar components, equipment, or assets in operation during the period, usually expressed in number of failures by period of time (for example, months or years) or by number of hours of operation. It can be quantified by certain conditions.
Average Time To Fail (TPPF) - Mean Time To Fail (MTTF): This indicator measures the average time that the equipment is able to operate at capacity without interruptions within the period considered; This constitutes an indirect indicator of the reliability of the equipment or system. The Average Time to Failure is also called “Average Operating Time” or “Average Time to Failure”.
Average Time To Repair (TPPR) - Mean Time To Repair (MTTR) : It is the measure of the distribution of the repair time of an equipment or system. This indicator measures the effectiveness in restoring the equipment to optimal operating conditions once the equipment is out of service due to a failure, within a certain period of time. The Average Time to Repair is a measurement parameter associated with maintainability, that is, with the execution of maintenance. Maintainability, defined as the probability of returning the equipment to operating conditions in a certain time using prescribed procedures, is a function of the equipment design (factors such as accessibility, modularity, standardization and diagnostic facilities, greatly facilitate maintenance). For a given design, if repairs are carried out by qualified personnel and tools,Documentation and prescribed procedures, the repair time depends on the nature of the failure and the mentioned design characteristics.
Average Time Between Failures (TMEF) - Mean Time Between Failures (MTBF): The Average Time Between Failures indicates the most probable time interval between a start and the appearance of a fault; that is, it is the average time elapsed until the arrival of the "failure" event. The higher its value, the greater the reliability of the component or equipment. One of the most important parameters used in the study of Reliability constitutes the MTBF, which is why it must be taken as one more indicator that represents in some way the behavior of a specific team. Likewise, to determine the value of this indicator, the historical primary data stored in the information systems must be used.
TPM - Total Productive Maintenance: A company's global management program, emphasizes involving the operator in the maintenance of equipment to bring a state of zero failure and zero loss, taking an improvement approach continuous. The implementation of a TPM program has the fundamental objective of obtaining the maximum performance and overall efficiency of a production system. In other words: It is a company management philosophy at the team level, supported by various development strategies, intertwined with each other to maximize the overall effectiveness of the team (OEE) and eliminate losses related to it.
Utilization: The utilization also called service factor, measures the effective operating time of an asset during a certain period.
WRAC - Workplace risk assessment and control: Similar to JSA (Workplace Safety Analysis) and used to review broader processes that manage risks in equipment or operations.
Download the original file
