Equipment Failure Rates: Valve
Equipment failure rates, MTBF, MTTR, and downtime statistics for electrical and mechanical plant equipment. Primary data from the USACE PREP reliability database (IEEE Std 3006.8-2018 Table 2), covering ~280 equipment classes. Supplemental data from IEEE motor and transformer surveys.
| equipment type | class code | description | failure rate per year (failures/year) | failures (count) | mdt hours (h) | mtbf hours (h) | mttm hours (h) | mttr hours (h) | standard | survey | unit years (unit-years) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Valve | H28-110 | Valve, 3-way, | 0.005428 | 4 | 0.59 | 1,613,844 | 0.02 | 9.13 | IEEE Std 3006.8-2018 Table 2 | USACE_PREP | 736.9 |
| Valve | H28-120 | Valve, 3-way, mixing control | 0.00019 | 3 | 1.03 | 46,000,792 | 1.02 | 1.5 | IEEE Std 3006.8-2018 Table 2 | USACE_PREP | 15,753.7 |
| Valve | H28-200 | Valve, backflow preventer | 0.040401 | 30 | 15.63 | 216,825 | 1.11 | 13.27 | IEEE Std 3006.8-2018 Table 2 | USACE_PREP | 742.6 |
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