One of the most important objectives of project management is to complete the project within the specified completion date of the project. Another important objective of project is to terminate the project by minimum rate of injuries and damage to the environment. One of the important factors which affect the time objective of the project is the failures or breakdowns of the project Machines and Equipment. Also, Health, Safety, Environment (HSE) factors are crucial in the efficient execution of the project. Resilience engineering is a new concept that will improve the safety and reliability of a high-risk system such as power plant construction project. Previous studies didn't consider the resilience engineering (RE) factors which could help the project to achieve its goals. Related data was collected from a power plant construction project and fuzzy DEA and Znumber DEA were utilized to analyze the Data and Best DEA model is selected according to maximum average efficiency and also for identifying most effective factors sensitivity analysis was done, and we found that flexibility, and project percent progress, system downtime, reporting culture and HSE costs are the most important factors on maintenance of the project. To the best of our knowledge, this is the first study considering RE and HSE factors to optimize maintenance of the project.