Mock-up training effects for steam generator lancing and FOSAR

The sludge lancing and foreign object search and retrieval (FOSAR) work on the secondary side of steam generator in nuclear power plant aims to improve the thermal efficiency and to preserve the tube integrity of the steam generator. It is generally performed during planned outage overhaul. Nuclear power plants (NPP¶s) are subject to the constraints of the working environment, unlike the general industry. In this study, we analyze the work environment of sludge lancing and FOSAR and establish the mock-up system to reduce the work time. Unlike general mock-up training, there are several constraints of working environment for mock-up training of steam generator lancing & FOSAR in NPP. In order to obtain optimal operation efficiency, Mock-up training suitable to the working environment in NPP should be established and implemented. In terms of the number of mock-up exercise, the mock-up training cannot be performed many times because of the time limitation before the field work. It is necessary to study the optimal number of times of mock-up by analyzing the characteristics of equipment and work environment in the steam generator lancing and FOSAR