Equipment Failure Rates: Accumulator
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) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Accumulator | H01-100 | Accumulator, pressurized | 0.006525 | 7 | 1.01 | 1,342,502 | 0.96 | 10.29 | IEEE Std 3006.8-2018 Table 2 | USACE_PREP | 1,072.8 |
| Accumulator | H01-200 | Accumulator, unpressurized | 0.007684 | 3 | 0.42 | 1,140,104 | 0.33 | 2 | IEEE Std 3006.8-2018 Table 2 | USACE_PREP | 390.4 |
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