“Post irradiation examination research on pressurized water reactor(PWR)fuel assembly”is one of the important topics of the project“Chinese advanced PWR fuel components development”.The purpose is that through post irradiation examination research on fuel rods from Qinshan Nuclear Power Plant(QNPP),data on structural change and irradiation performance of “Post irradiation examination research on pressurized water reactor (PWR) fuel assembly ” is one of the important topics of the project “Chinese advanced PWR fuel components development ”. The purpose is that post through irradiation diagnostic research on fuel rods from Qinshan Nuclear Power Plant (QNPP), data on structural change and irradiation performance of