Equipment Failure Rates: Generator
E20-000 to E23-000
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) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Generator | E20-000 | Generator, hydro turbine | 0.29879 | 27 | 310.21 | 29,318 | 238.44 | 78.36 | IEEE Std 3006.8-2018 Table 2 | USACE PREP | 90.4 |
| Generator | E21-110 | Generator, natural gas, < 250 | 0.674926 | 5 | 1.5 | 12,979 | — | 1.5 | IEEE Std 3006.8-2018 Table 2 | USACE PREP | 7.4 |
| Generator | E21-120 | Generator, natural gas, < 250 | 0.139419 | 31 | 34.6 | 62,832 | 32.87 | 6.33 | IEEE Std 3006.8-2018 Table 2 | USACE PREP | 222.4 |
| Generator | E21-210 | generator, natural gas, ≥ 250 | 4.140691 | 214 | 71.13 | 2,116 | 191.73 | — | IEEE Std 3006.8-2018 Table 2 | USACE PREP | 51.7 |
| Generator | E22-000 | Generator, steam turbine | 1.107687 | 130 | 263.61 | 7,908 | 288.24 | 100.59 | IEEE Std 3006.8-2018 Table 2 | USACE PREP | 117.4 |
| Generator | E23-000 | Generator, steam, heat recovery | 4.185891 | 86 | 45.84 | 2,093 | — | 162.4 | IEEE Std 3006.8-2018 Table 2 | USACE PREP | 20.5 |
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