The objective of this study is to analyze the compliance of NR 10 in a substation, analyzing as inherent activities to the enterprise according to the standards of standardization. So, it’s incorrect to affirm: “This equipment has a 0.97 reliabilityįactor.”.The Regulated Standard (NR-10) is a standard that establishes minimum requirements and conditions with the stated objective of guiding the adoption of preventive systems control measures. This reinforces the idea that Reliability is function of time, it isn’t a definite Let P(t) be the probability of failure between 0 and t reliability is defined as:Ĭonsidering rate failure (λ) constant, it is proven (check at that R(t), meaning the probability of having operated until instant t, is given by:
MANUTENÇÃO FUNÇÃO ESTRATÉGICA ALAN KARDEC PDF DOWNLOAD MANUAL
Developing Integrated Planning (Mntce+Ops+HSE+Inspection+.)Īchieved Availability↑ = MTBM↑/ (MTBM+M↓)ĭelivering equipments to Maintenance as clean as possibleĬheck-list at the end of Maintenance activitiesĬomplete and comprehensive Equipment data availableĪvailability % Downtime per year Downtime per month* Downtime per weekĩ9.9% ("three nines") 8.76 hours 43.2 min 10.1 minĩ9.99% ("four nines") 52.6 min 4.32 min 1.01 minĩ9.999% ("five nines") 5.26 min 25.9 s 6.05 sĩ9.9999% ("six nines") 31.5 s 2.59 s 0.605 sīenchmarking balance between Mtce programsīibliography: Lafraia, João Ricardo - Manual de Confiabilidade, Mantenabilidade e Disponibilidade, Editora Qualitymarkįailure rate (λ) is defined as the reciprocal of MTBF:. Improving personnel technical skills (training). Implementing Maintenance Engineering (Planning, Logistics.). Implementing Maintenance Engineering (RCM, TPM.). Using Predictive techniques whenever possible. Reduce Preventive Programs to a minimum, or, have Preventive intervals as well. Operational Availability: ratio of the system uptime and total Inherent Availability: consider only corrective downtimeĪchieved Availability: consider corrective and preventive M = Maintenance Mean Downtime (including preventive MTBM = Mean Time Between Maintenance actions Reliability is a performance expectation.ĭepends upon Operation uptime and Operating cycle.Įquipment history will tell us the availability. Specified period of time under stated conditions. Reliability can be defined as the probability that an item willĬontinue to perform its intended function without failure for a Reliability is a broad term that focuses on the ability of a product Use RCM concepts and implement them in theirīibliography: Kardec, Alan y Nascif, Julio - Manutenção- Função Estratégica, Editora Qualitymark Pretty soon, NuclearĪctivities, Military, Oil & Gas industries also began to That’s why Reliability Centered Maintenance has begun Today, this would mean 2 accidents per day, with This was the average failure rate in commercial flights What about a failure rate of 0.00006/event? John Moubray is today considered a synonym of RCM. He led until his premature death in 2004. He began working on RCM in 1981, and since 1986 wasįull time dedicated to RCM, founding Aladon LCC, which Mining, manufacturing and electric utility sectors. Maintenance management systems for a wide variety of clients in the He worked for this company for twelve years, specializing in theĭevelopment and implementation of manual and computerized 
In 1974, he joined a large multi-disciplinary management consultingĬompany. Year as a commercial field engineer for a major oil company. The correct balance will give in return betterĪfter graduating as a mechanical engineer in 1971, John Moubray workedįor two years as a maintenance planner in a packaging plant and for one One only approach, about Corrective, Preventive or The different failure modes mean that there’s not Many pieces of equipment have sporadic activity (alarms, Technology development enabled to identify failureĪlso know as Condition Based Maintenance. If equipmentĬonditions were known, the maintenance could be later. To avoid an unwanted failure, the periods of However, very often these failures happen in irregular Intervals to fix the equipment BEFORE the failure: Have an almost regular pattern, failing after anĪverage period. It existed only to fix failures, when they happened.Īs times went by, it was detected that many failures At the very beginning, Maintenance was an appendix
0 kommentar(er)
