******Categories of Tasks
There are three general categories of tasks that are considered to be proactive in nature:
On-condition Tasks
An on-condition task is “a scheduled task used to detect a potential failure.” Such a task has many other names in the maintenance community such as:
* “Predictive” tasks (in contrast to “preventive” tasks, a name that these people apply to scheduled discard and scheduled restoration tasks.)
* “Condition-based” tasks, referring to “condition-based maintenance” or CBM (again, in contrast to “time-based maintenance” or scheduled discard and scheduled restoration tasks)
* “Condition-monitoring” tasks, since the tasks monitor the condition of the asset.
Scheduled Discard Task
The next kind of task is a scheduled discard task, defined as “a scheduled task that entails discarding an item at or before a specified age limit regardless of its condition at the time.” A scheduled discard task must be subjected to the following criteria before accepting the task:
* There shall be a clearly defined (preferably a demonstrable) age at which there is an increase in the conditional probability of the failure mode under consideration.
* A sufficiently large proportion of the occurrences of this failure mode shall occur after this age to reduce the probability of premature failure to a level that is tolerable to the owner or user of the asset.
Scheduled Restoration Tasks
The next kind of task is a scheduled restoration task, defined as “a scheduled task that restores the capability of an item at or before a specified interval (age limit), regardless of its condition at the time, to a level that provides a tolerable probability of survival to the end of another specified interval.” The following criteria must be applied to a scheduled restoration task before accepting the task:
* There shall be a clearly defined (preferably a demonstrable) age at which there is an increase in the conditional probability of the failure mode under consideration.
* The task shall restore the resistance to failure (condition) of the component to a level that is acceptable to the owner or user of the asset.
* A sufficiently large proportion of the occurrences of this failure mode shall occur after this age to reduce the probability of premature failure to a level that is tolerable to the owner or user of the asset.
There are three general categories of tasks that are considered to be proactive in nature:
On-condition Tasks
An on-condition task is “a scheduled task used to detect a potential failure.” Such a task has many other names in the maintenance community such as:
* “Predictive” tasks (in contrast to “preventive” tasks, a name that these people apply to scheduled discard and scheduled restoration tasks.)
* “Condition-based” tasks, referring to “condition-based maintenance” or CBM (again, in contrast to “time-based maintenance” or scheduled discard and scheduled restoration tasks)
* “Condition-monitoring” tasks, since the tasks monitor the condition of the asset.
Scheduled Discard Task
The next kind of task is a scheduled discard task, defined as “a scheduled task that entails discarding an item at or before a specified age limit regardless of its condition at the time.” A scheduled discard task must be subjected to the following criteria before accepting the task:
* There shall be a clearly defined (preferably a demonstrable) age at which there is an increase in the conditional probability of the failure mode under consideration.
* A sufficiently large proportion of the occurrences of this failure mode shall occur after this age to reduce the probability of premature failure to a level that is tolerable to the owner or user of the asset.
Scheduled Restoration Tasks
The next kind of task is a scheduled restoration task, defined as “a scheduled task that restores the capability of an item at or before a specified interval (age limit), regardless of its condition at the time, to a level that provides a tolerable probability of survival to the end of another specified interval.” The following criteria must be applied to a scheduled restoration task before accepting the task:
* There shall be a clearly defined (preferably a demonstrable) age at which there is an increase in the conditional probability of the failure mode under consideration.
* The task shall restore the resistance to failure (condition) of the component to a level that is acceptable to the owner or user of the asset.
* A sufficiently large proportion of the occurrences of this failure mode shall occur after this age to reduce the probability of premature failure to a level that is tolerable to the owner or user of the asset.
Forwarded from Khaneh Omran
با تقدیم سلام و احترام
دوست عزیز شما می توانید از طریق لینک زیر عضو کانال رسمی "خانه عمران" با موضوعات آموزشی، علمی و تخصصی در زمینه ساختمان شوید.
لینک کانال خانه عمران جهت معرفی به سایر دوستان یا سایر گروه ها:
https://telegram.me/khaneh_omran
دوست عزیز شما می توانید از طریق لینک زیر عضو کانال رسمی "خانه عمران" با موضوعات آموزشی، علمی و تخصصی در زمینه ساختمان شوید.
لینک کانال خانه عمران جهت معرفی به سایر دوستان یا سایر گروه ها:
https://telegram.me/khaneh_omran
Telegram
خانه عمران شریف
مرکز آموزش مهندسین خانه عمران شریف
مبتکر و آغازگر دوره های تخصصی و حرفه ای مهندسان
مشهد: میدان راهنمایی - نبش شهید صادقی 10
تماس: 37676630 و 37676255 (051)
ثبت نام آنلاین دوره ها: khanehomran.com
ارتباط با مدیر کانال:
@Khanehomransharif
09154004490
مبتکر و آغازگر دوره های تخصصی و حرفه ای مهندسان
مشهد: میدان راهنمایی - نبش شهید صادقی 10
تماس: 37676630 و 37676255 (051)
ثبت نام آنلاین دوره ها: khanehomran.com
ارتباط با مدیر کانال:
@Khanehomransharif
09154004490
Forwarded from مجله مدیریت نگهداری و تعمیرات