Expert Diagnosis System Development for Mechanical Equipment-Boiler

[[abstract]]鍋爐加熱水或熱媒產生蒸氣供取暖或石化廠製程使用，用途極廣，種類也多。鍋爐使用量隨著國內工業化程度而增高，發生工安事故也履見不鮮。先進的效率與安全控制系統固然可以防範很多問題的發生，這些控制功能固然很好，但如果鍋爐維護不當，反而更危險。最近幾年在國際間有關設備檢查的新趨勢是改由設備的剩餘壽命及風險來決定檢查週期，屬於績效導向的作法。本計畫規劃的方向是以風險分析的精神，針對蒸汽鍋爐(煙管式與水管式)建立診斷專家系統，協助使用者早期發現鍋爐問題；另外，進行鍋爐的檢查規劃研究，制定鍋爐延長停爐所需的作業與準則。[[abstract]]Boilers can provide heating applications for wide variety of purposes ranging from house use to industrial manufacturing by heating up water. As the country becomes highly industrialized, the boiler usages have increased accordingly, so does the boiler accidents. Modern boilers mostly are equipment with advanced efficiency and safety controls, which help not only prevent human negligence but also stable boiler functions. However, ill-maintained equipment often incurs even more unthinkable outcomes. Performance based approaches for determining when and where to inspect on the process equipment has become quite popular lately. Such a new trend requires the plant to perform risk evaluation and remaining life calculation of the process equipment so as to determine effective maintenance activities if any. In the project, an expert diagnosis system is to be developed based on results of risk analysis. With the expert system keeping track of the boiler operation, it is possible to provide early warning of incipient of abnormal situations. In the meantime, studies will be placed on the inspection planning of boilers with an aim to develop necessary engineering practices when an extension of shutdown maintenance interval is expected.[[note]]IOSH91-S10