8.2.3.1 Reliability, Maintainability and Availability - How to satisfy requirement?

[shyso]

What is needed to satisfy the standard. Currently we develop an initial capability study (Ppk) and determine the failure rate. Does this mean that we will need to do a true reliability study (i.e. determine burn in time, optimal process time and wear out time)?

[Sam]

Originally Posted by shyso

What is needed to satisfy the standard. Currently we develop an initial capability study (Ppk) and determine the failure rate. Does this mean that we will need to do a true reliability study (i.e. determine burn in time, optimal process time and wear out time)?

What I submitted was;
Reliability to produce - Cpk. Process effectiveness and efficiency
Maintainabilty - Maintenance schedules/history, preventive/predictive
maintenence.
Availability - the time that the process is available to produce the customers
product.
This info can be obtained easily by conducting the run@rate or PSO as required by the customer.

[Sambasi]

We have addressed these (for critical equipments in a process) by using basic defination in our system:-

Reliability = Mean Time Between Failure (MBTF)

Maintainablity = Mean time To Repair (MTTR)

Availability = MTBF/(MTBF+MTTR)

[Sam]

Originally Posted by Sambasi

We have addressed these (for critical equipments in a process) by using basic defination in our system:-

Reliability = Mean Time Between Failure (MBTF)

Maintainablity = Mean time To Repair (MTTR)

Availability = MTBF/(MTBF+MTTR)

As you state these are standard terms for evaluating equipment,and this is one step in the process when completing a Run@Rate or PSO calculation. But as I read it the requirement for R/M/A applies to the process and not individual items of equipment.

[Sambasi]

As you have stated correctly, this data is considered for process R/M/A.
Thanks.