Page 293 - Improving Machinery Reliability

264 Improving Machinery Reliability

Table 5-2
Life Spans of Selected Machinery Components and Equipment

10.3 10.2 10-1 100 10‘ IO* 10’
Componenls
Liner, recip. comp. cyl.
Nuls
“W-rings. elastomeric
packings. rI3L.jp. mp. rod
Pins
Pivots
Pistons, engines
Pumps, lubricalors
Seals, mechanical
Shalls. cent. pumps
spanss
Vibration mounts
Wear @IS. cent. pumps
Valves, recip. comp.

Machinery Eauipmenl
Circuit breakers
Melon. ac
Pumps, centrilugal
Steam turbines
Translormers

Instfumenlatian
CoMmllers. pneumatic
Contders. solid stale
Control valves
Motorized valves
Solenoid valves
Transducers
Tranwnitters
Temperature indicalws
Pressura mdmlm
Flw insbumenlalion
Level instrumentalion
Electro-mechanical parts
I
Failure Rat6 (failures per 106 hours)
COIresponding mean-time.betwaen~lailure. month. year 99Y 16Y SY 1Y 1M