Abstract: Human reliability analysis (HRA) is an important component of probabilistic safety assessment (PSA). The design HRA was conducted by AECL and the technique was oversimplified. In order to make HRA represent the operational state of Third Qinshan Nuclear Power Plant more realistically, HRA was re-analyzed, to which dependence between events was added. On the basis of a comparison on internationally prevailing HRA techniques, a standardized THERP+HCR technique was adopted. Compared with AECL results, the updated is basically consistent with AECL analysis, while rationality and accuracy are obviously improved and results are more truthful.