국내 하수처리플랜트의 가용도 평가 연구

The simulation investigation on the availability of sewage treatment plant by scenario of failure event and combination has been carried out. This study focuses on availability and criticality induced by failure rate of major equipment. The equipment classification of sewage treatment plant and failure type and event schematic for the evaluation algorithm are designed and the methodologies on simulation are established. The availability in the case of serial connection is calculated as around 50%. In other case with combination and back up system, availability showed around 80%. The criticality, affect availability, is estimated highly in the dehydration and sludge concentration process.