BS ISO 17359:2011 pdf download.Condition monitoring and diagnostics of machines ——General guidelines.
7.1 Reliability block diagram
It can be useful to produce a simple high-level reliability block d.agram, includmg whether the equipment has a series or parallel reliability effect The use of reliabi’ity and availability factors is recommended to improve the targe4ing of the condition monitoring processes.
Detailed information on producing reliability block diagrams is contained in references in the B4bllography.
7.2 Equipment criticality
A criticality assessment of all machines is recommended in order to create a prioritized list of machines to be included (or nok) in the condition monitoring programme. This may be a sample rating system based on factors such as:
cost of mactime down-time or lost production costs:
failure rates and mean time 10 repair:
redundancy;
consequential or secondary damage:
replacement cost of the machine:
cost of maintenance or spares:
life-cycle costs:
cost of the monitoring system; safety and environmental rlpact.
One or more of the above factors may be weighted and included in a formula to produce the prioritized list, The results of this process may be used when selecting methods of monitonng (see Clause 8).
It can be useful to produce a simple high-level reliability block d.agram, includmg whether the equipment has a series or parallel reliability effect The use of reliabi’ity and availability factors is recommended to improve the targe4ing of the condition monitoring processes.
Detailed information on producing reliability block diagrams is contained in references in the B4bllography.
7.2 Equipment criticality
A criticality assessment of all machines is recommended in order to create a prioritized list of machines to be included (or nok) in the condition monitoring programme. This may be a sample rating system based on factors such as:
cost of mactime down-time or lost production costs:
failure rates and mean time 10 repair:
redundancy;
consequential or secondary damage:
replacement cost of the machine:
cost of maintenance or spares:
life-cycle costs:
cost of the monitoring system; safety and environmental rlpact.
One or more of the above factors may be weighted and included in a formula to produce the prioritized list, The results of this process may be used when selecting methods of monitonng (see Clause 8).
