• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.25 no.12
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• pp.113-118
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• 2011

In this study, investigation and appraisal method for the scene of a fire according to electrical fire hazards of hair dryer which is usually used at living space are presented. Hair dryer is briefly composed of heating part, wind part and control part. Electrical fire hazards of hair dryer are insulation destruction of power cord, ignition by overheat of heating coil, scattering spark on inside dust, overheat of motor by fan shackle, ignition by carelessness of user, and so on. Fire cause by hair dryer can be perceived through investigation about half-disconnection of power cord, contact badness of power plug, verification of heating coil, fan and switch. These results are expected to be utilized effectively in a countermeasure to prevent an electrical fire by hair dryer.

• Research in Community and Public Health Nursing
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• v.32 no.3
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• pp.396-403
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• 2021

Purpose: The purpose of this study was to investigate the mediating effect of perceived appraisal support between neuroticism and occupational stress in firefighters. Methods: The subjects of this study were 156 firefighters who worked at three fire stations in G province in Korea. The collected data were analyzed by t-test, ANOVA, and multiple regression analysis using Baron and Kenny's method for mediation. Results: There were significant relationships between neuroticism and perceived appraisal support (r=.30, p<.001), neuroticism and occupational stress (r=.42, p<.001), and perceived appraisal support and occupational stress (r=.36, p<.001). Perceived appraisal support showed partial mediating effects in the relationship between neuroticism and occupational stress. Conclusion: The impact of neuroticism in firefighters was mediated by perceived appraisal support for occupational stress. This suggests that strategies for enhancing perceived appraisal support in fire fighters should be considered when developing neuroticism management interventions for decreasing their occupational stress.

• Fire Science and Engineering
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• v.25 no.3
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• pp.99-106
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• 2011

Experiments of Cone calorimeter test and Lift spread flame apparatus test are carried out in order to appraise fire hazard in color nonwoven used mostly on the spot in construction works. As the result, in color nonwoven combustibility is discovered not firing flame in surface, but firing under state of combustible gas occuring in the state of melting. In the case of Lift spread flame apparatus test, color nonwoven is very brittle which almost no flame spread owing to contracting and break by firing strength. The following data are agree with basis: total heat release is 2.66 MJ/$m^2$, limited combustible material (10 min) of incombustible rating appraisal in interior material of building, and incombustible materials (5 min) 8 MJ/$m^2$ in spite of the above data mentioned, those data are only as basis of interior finish, and so I cannot judge color nonwoven have incombustible rating retain through the above data. Accordingly, the basis of incombustible rating and experiment method about exterior finish must be arranged also.

• Composites Research
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• v.33 no.4
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• pp.177-184
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• 2020

Flame retardant(FR) clothes prohibit additional fire diffusion and make the personnel do their tasks without a hitch in a flammable environment. The existing FR clothes, however, are heavy and give high thermal fatigue. Therefore, it is strongly demanded to develop a light, convenient, and eco-friendly clothes. Recently, many works have been reported to make FR fabrics with phosphorus compounds, but their performance could not satisfy the specified criteria in appraisal standards of domestic and American FR clothes or combat uniforms. In this paper, two kinds of phosphorus compounds were applied to cotton fabric. Graphene oxide functionalized with a phosphorus-rich deep eutectic solvent and ammonium polyphosphate were coated on cotton fabric by eco-friendly padding procedure. The coated fabrics were analyzed with thermogravimetric analysis, vertical flame resistance test(ASTM D6413), cone calorimeter test(ISO 5660-1), and method of test for limited flame spread(ISO 15025). It was revealed that the as-made cotton with those two materials simultaneously had better flame resistance than the cottons with each one. Furthermore, an additional coating for hydrophobicity on the FR cotton was tried for better washing fastness.