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ABSTRACT: The purpose of this study is to assess the organizational types and the job stress factors that affect procedure-based job performances in nuclear power plants. We derived 24 organizational factors affecting job stress level in nuclear power plants from the job stress analysis models developed by NIOSH, JDI, and IOR. Considering the safety characteristics in the operating tasks of nuclear power plants, we identified the job contents and characteristics through the analyses of job assignments that appeared in the organizational chart and the results of an activity-based costing. By using questionnaire surveys and structured interviews with the plant personnel and expert panels, we assessed 70 jobs among the 777 jobs managed officially in accordance with the procedures. They consist of the representative jobs of each department and are directly related to safety. We utilized the organizational personality type indicators to characterize the personality types of each organization in nuclear power plants.
Journal of Nuclear Science and Technology. 01/2008; 45(8):784-792.
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Jung Taek Kim,,
Yoon Ki Kang,,
Hae Cheol Shin,,
Byung Joo Kim,, Jung Woon Lee,,
Sang Jung Lee,,
Sung Pil Lyu,
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ABSTRACT: In this paper, an operator-aid system is proposed for tracking the logics of alarm, finding out the causes of alarm, displaying the highlighted alarm procedure related to the causes, and suppressing and filtering nuisance alarms due to the physical or logical connections between components or systems in abnormal state. The system can be used for operator to identify the detail causes of an alarm without checking all of causes of candidates by alarms. The proposed system will apply to nuclear power plant on CANDU type, Wolsong 3&4 Nuclear Power Plant.
Human Factors and Power Plants and HPRCT 13th Annual Meeting, 2007 IEEE 8th; 09/2007
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ABSTRACT: In Nuclear Power Plants(NPPs), Emergency Operating Procedure(EOP) is used to overcome a undesirable or emergency plant state. Most NPPs are using the two-column type EOP, even though the flowchart type is used in some other NPPs. The flowchart type EOP has inherent characteristics due to its structure and format. In this study, an experimental evaluation was conducted for a flowchart type EOP. For the experimental evaluation, questionnaires were used, observations were made on operators using flowchart type procedures, and ECG based physiological measurements when need were performed. The results of the analysis show that the flowchart type EOP does not have any significant problems when compared with the two-column type as far as the safety of NPPs is concerned. However, we found a few problems, caused by the structure and format of the flowchart type, to be improved.
Human Factors and Power Plants and HPRCT 13th Annual Meeting, 2007 IEEE 8th; 09/2007
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ABSTRACT: Human errors in nuclear power plants have been an important subject in the human factors research domain. Although the mechanism of human errors seems not to draw any more interests from reputable researchers, human errors are still occurring in nuclear power plants and efforts to effectively reduce these human errors are still being searched. In this paper, some practices, e.g. HPES, PSR, and HFMP, which are the applications of human factors engineering to Korean nuclear power plants, are discussed. PSR activities are described in detail here since they have brought about many valuable insights into human factors in NPPs. It is also discussed what we should consider in the analyses of human error events. In contrast to this retrospective approach, several prospective approaches are discussed in this paper; work condition analyses for the tasks taken place at locations other than control rooms, the expansion of training opportunities to local operators, the development of an effective know-how transfer system, the establishment of a job management system by considering changes in the morals and cultures in the performance of jobs in NPPs.
Human Factors and Power Plants and HPRCT 13th Annual Meeting, 2007 IEEE 8th; 09/2007
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ABSTRACT: Studies of the anion effects on the molecular construction of a series of AgX complexes with bis(4-pyridyl)dimethylsilane (L) (X- = NO2-, NO3-, CF3SO3-, and PF6-) have been carried out. Formation of the skeletal bonds appears to be primarily associated with a suitable combination of bidentate N-donors of L and a variety of coordination geometries of Ag(I) ions. The L:Ag(I) ratios of the products are dependent on the nature of the polyatomic anions. The 1:1 adduct Ag(I)-L for NO2-, 3:4 adduct for NO3-, 2:3 adduct for CF3SO3-, and 1:2 adduct for PF6- have been obtained. A linear relationship between the ratio of ligand to metal and the coordinating ability of anions was observed. [Ag(NO2)(L)] has a unique sheet structure consisting of double helices, and [Ag3(L)4](NO3)3 is a 2 nm thick interwoven sheet structure consisting of nanotubes. The compound [Ag2(L)3](CF3SO3)2 affords a characteristic ladder-type channel structure, and [Ag(L)2](PF6) is a simple 2D grid structure.
Inorganic Chemistry 06/2005; 44(9):3151-5. · 4.60 Impact Factor
