Tham khảo tài liệu 'nuclear power control, reliability and human factors part 14', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | The Human Factors Approaches to Reduce Human Errors in Nuclear Power Plants 379 3. Human factors practices in NPPs Nuclear Power Plants In the following we introduce human factors practices which include human factors assessment and management in NPPs. PSR PSRs were adopted in order to guarantee the continued safe operation of nuclear power plants. PSRs are focused on considering various aging effects and are generally conducted approximately every ten years and for this analysis procedures are required such as an inspection structure analysis failure assessment and a combination of them IAEA 2010 Ko et al. 2006 . Through PSRs in Korean NPPs the status of various human factors in operating NPPs has been reviewed by human factors experts and independent operation experts. Many points that are not suitable in a human factors sense have been revealed and remedies for these have also been discussed between the reviewers and plant personnel Lee et al. 2004a 2004b 2004c Lee et al. 2006a 2006b . In the process of PSRs two different types of responses from plant personnel have been identified. One is to encourage our reviews and admit the findings as valuable information for upgrading human factors in their plant. Another is to refuse to assist in the reviews and to insist that they do not have any human factors problems. We will describe here in detail about a PSR of human factors since we think that our PSR activities contribute considerably to an enhancement of the human factors in NPPs. Our PSR of human factors complies with the IAEA International Atomic Energy Agency safety guide IAEA 2003 . The following items are defined in the IAEA guide a. Staffing levels for the operation of a nuclear power plant with due recognition of absences shift working and overtime restrictions b. Availability of qualified staff on duty at all times c. Policy to maintain the know-how of the plant staff d. Systematic and validated staff selection methods . testing for aptitude .