Definitions Maintenance functions are often referred to as maintenance, repair and overhaul (MRO), and MRO is also used for maintenance, repair  and operations. Over time, the terminology of maintenance and MRO has begun to become standardized. The United States Department of Defense uses the following definitions:Federal Standard 1037C and from MIL-STD-188 and from the Department of Defense Dictionary of Military and Associated Terms Any activity—such as tests, measurements, replacements, adjustments, and repairs—intended to retain or restore a functional unit in or to a specified state in which the unit can perform its required functions. All action  taken to retain material in a serviceable condition or to restore it to serviceability. It includes inspections, testing, servicing, classification as to serviceability, repair, rebuilding, and reclamation. All supply and repair action  taken to keep a force in condition to carry out its mission. The routine recurring work required to keep a facility (plant, building, structure, ground facility, utility system, or other real property) in such condition that it may be continuously used, at its original or designed capacity and efficiency for its intended purpose. This definition covers all activities for which aviation regulations require  issuance of a maintenance release document (aircraft certificate of return to service – CRS).Road repair Preventive maintenance, also known as PM Corrective maintenance, where equipment is repaired or replaced after wear, malfunction  or break down Predictive maintenance, which uses sensor data to monitor a system, then continuously evaluates it against historical trends to predict failure before it occurs Reinforcement The main goal behind PM is for the equipment to make it from one planned service to the next planned service without any failures caused by fatigue, neglect, or normal wear (preventable items), which Planned Maintenance and Condition Based Maintenance help to achieve by replacing worn components before they actually fail. Maintenance activities include partial or complete overhauls at specified periods, oil changes, lubrication, minor adjustments, and so on. In addition, workers can record equipment deterioration so they know to replace or repair worn parts before they cause  system failure. The key factor as to when and why this work is being done is timing , and involves a service, resource  or facility being unavailable. By contrast, condition-based maintenance is not directly based on equipment age. Planned maintenance is preplanned, and can be date-based, based on equipment running hours, or on distance travelled . Parts that have scheduled maintenance at fixed intervals, usually due to wearout or a fixed shelf life, are sometimes known as time-change interval , or TCI items. The main promise of predictive maintenance is to allow convenient scheduling of corrective maintenance , and to prevent unexpected equipment failures. Condition-based maintenance was introduced to try to maintain the correct equipment at the right time. CBM is based on using real-time data to prioritize and optimize maintenance resources. Observing the state of the system is known as condition monitoring. Such a system will determine the equipment's health, and act only when maintenance is actually necessary. Developments in recent years have allowed extensive instrumentation of equipment, and together with better tools for analyzing condition data, the maintenance personnel of today is more than ever able to decide what is the right time to perform maintenance on some piece of equipment. Ideally, condition-based maintenance will allow the maintenance personnel to do only the right things, minimizing spare parts cost, system downtime  and time spent on maintenance. Also, the technical side of it is not always as simple. Even if some types of equipment can easily be observed by measuring simple values such as vibration (displacement, velocity  or acceleration), temperature  or pressure, it is not trivial to turn this measured data into actionable knowledge about the health of the equipment. Value potential As systems get more costly, and instrumentation and information systems tend to become cheaper and more reliable, CBM becomes an important tool for running a plant or factory in an optimal manner. Better operations will lead to lower production cost and lower use of resources. And lower use of resources may be one of the most important differentiators in a future where environmental issues become more important by the day. A more down to earth scenario where value can be created is by monitoring the health of your car motor. Rather than changing parts at predefined intervals, the car itself can tell you when something needs to be changed based on cheap and simple instrumentation. Corrective maintenance is a type of maintenance used for equipment after equipment break down or malfunction is often most expensive – not only can worn equipment damage other parts and cause multiple damage , but consequential repair and replacement costs and loss of revenues due to down time during overhaul can be significant. Rebuilding and resurfacing of equipment and infrastructure damaged by erosion and corrosion as part of corrective or preventive maintenance programmes involves conventional processes such as welding and metal flame spraying, as well as engineered solutions with thermoset polymeric materials.
Definitions Maintenance functions are often referred to as maintenance, repair and overhaul (MRO), and MRO is also used for maintenance, repair , and operations. Over time, the terminology of maintenance and MRO has begun to become standardized. The United States Department of Defense uses the following definitions:Federal Standard 1037C and from MIL-STD-188 and from the Department of Defense Dictionary of Military and Associated Terms Any activity—such as tests, measurements, replacements, adjustments, and repairs—intended to retain or restore a functional unit in or to a specified state in which the unit can perform its required functions. All action is taken to retain material in a serviceable condition or to restore it to serviceability. It includes inspections, testing, servicing, classification as to serviceability, repair, rebuilding, and reclamation. All supply and repair action were taken to keep a force in condition to carry out its mission. The routine recurring work required to keep a facility (plant, building, structure, ground facility, utility system, or other real property) in such condition that it may be continuously used, at its original or designed capacity and efficiency for its intended purpose. This definition covers all activities for which aviation regulations require the issuance of a maintenance release document (aircraft certificate of return to service – CRS).Road repair Preventive maintenance, also known as PM Corrective maintenance, where equipment is repaired or replaced after wear, malfunction , or break down Predictive maintenance, which uses sensor data to monitor a system, then continuously evaluates it against historical trends to predict failure before it occurs Reinforcement The main goal behind PM is for the equipment to make it from one planned service to the next planned service without any failures caused by fatigue, neglect, or normal wear (preventable items), which Planned Maintenance and Condition Based Maintenance help to achieve by replacing worn components before they actually fail. Maintenance activities include partial or complete overhauls at specified periods, oil changes, lubrication, minor adjustments, and so on. In addition, workers can record equipment deterioration so they know to replace or repair worn parts before they cause a system failure. The key factor as to when and why this work is being done is timing and involves a service, resource , or facility being unavailable. By contrast, condition-based maintenance is not directly based on equipment age. Planned maintenance is preplanned, and can be date-based, based on equipment running hours, or on distance traveled . Parts that have scheduled maintenance at fixed intervals, usually due to wear out or a fixed shelf life, are sometimes known as time-change intervals , or TCI items. The main promise of predictive maintenance is to allow convenient scheduling of corrective maintenance and to prevent unexpected equipment failures. Condition-based maintenance was introduced to try to maintain the correct equipment at the right time. CBM is based on using real-time data to prioritize and optimize maintenance resources. Observing the state of the system is known as condition monitoring. Such a system will determine the equipment's health, and act only when maintenance is actually necessary. Developments in recent years have allowed extensive instrumentation of equipment, and together with better tools for analyzing condition data, the maintenance personnel of today is more than ever able to decide what is the right time to perform maintenance on some piece of equipment. Ideally, condition-based maintenance will allow the maintenance personnel to do only the right things, minimizing spare parts cost, system downtime , and time spent on maintenance. Also, the technical side of it is not always as simple. Even if some types of equipment can easily be observed by measuring simple values such as vibration (displacement, velocity , or acceleration), temperature , or pressure, it is not trivial to turn this measured data into actionable knowledge about the health of the equipment. Value potential As systems get more costly, and instrumentation and information systems tend to become cheaper and more reliable, CBM becomes an important tool for running a plant or factory in an optimal manner. Better operations will lead to lower production costs and lower use of resources. And lower use of resources may be one of the most important differentiators in the future where environmental issues become more important by the day. A more down-to-earth scenario where value can be created is by monitoring the health of your car motor. Rather than changing parts at predefined intervals, the car itself can tell you when something needs to be changed based on cheap and simple instrumentation. Corrective maintenance is a type of maintenance used for equipment after equipment breaks down or malfunction is often most expensive – not only can worn equipment damage other parts and cause multiple damages , but consequential repair and replacement costs and loss of revenues due to downtime during overhaul can be significant. Rebuilding and resurfacing of equipment and infrastructure damaged by erosion and corrosion as part of corrective or preventive maintenance programs involves conventional processes such as welding and metal flame spraying, as well as engineered solutions with thermoset polymeric materials.
A
,
A
is
A
were
A
the
A
,
A
a
D
,
A
,
R
travelled
traveled
R
wearout
wear out
R
interval
intervals
D
,
A
,
A
,
A
,
R
cost
costs
R
a
the
R
down to earth
down-to-earth
R
break
breaks
R
damage
damages
R
down time
downtime
R
programmes
programs