• Title/Summary/Keyword: Small scale industries

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Hull form design for resistance minimization of small-scale LNG bunkering vessels using numerical simulation

  • Pak, Kyung-Ryeong;Song, Gi-Su;Kim, Hee-Jung;Son, Hye-Jong;Park, Hyoung-Gil
    • International Journal of Naval Architecture and Ocean Engineering
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    • v.12 no.1
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    • pp.856-867
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    • 2020
  • This paper aims to provide the most useful method of determining an optimum LCB position and design direction of fore- and aft-body hull shape for a SLBV. It is known that the SLBV has a lower length-to-beam ratio, larger Cb and simpler stern shape designed for the installation of azimuth thrusters comparing to those of conventional LNG carriers. Due to these specific particulars of SLBV, the optimum LCB position was very different to that of conventional LNG carrier. And various approaches were applied to determine the optimum fore- and aft-body hull shape. The design direction for the optimum hull-form was evaluated as the minimization of the total resistance which includes the wave-making resistance and form-drag with numerical simulation.

Measures to Reduce Industrial Accidents by Investigating them at Small Scale Construction Sites in Rural Area (농촌지역 소규모 건축공사 현장의 재해조사를 통한 저감방안 고찰)

  • Kim, Byung-Yun
    • Journal of the Korean Institute of Rural Architecture
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    • v.16 no.1
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    • pp.95-102
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    • 2014
  • The number of industrial accident victims in the construction industry accounts for 1/3 of those in the entire industries and about 30% of the total compensation costs are spent in the construction industry. As such, the construction industry is a typical industry causing numerous safety accidents. This study analyzes the status of industrial accidents in small scale construction sites to build maximum five-story buildings by examining statistical data for the past five years, investigating those construction sites and conducting interviews with the workers. This study also seeks the causes of and measures for industrial accidents in the small scale construction industry through comparison with relevant systems. The findings are as follows: (1) To reduce hazard rate, shaping the working environment and safety measures that take into account the physically weak classes of the middle aged and the aging are urgently required, because 62.9% of the industrial accidents in the construction industry occurred to those who are 50 years of age or older. (2) The hazard rate at small scale construction sites with less than 10 construction workers accounts for 55% of that of the entire industries. The government, in this context, needs to support finance or technology and improve system by selecting the small scale construction sites, where industrial accidents occur frequently. (3) Because the hazard rate of unskilled workers with less than 6 months of work experience accounts for 90.95% of the total, safety education needs to be concentrated on those unskilled workers. (4) The relevant standards need to be segmented and revised and bolstered, given that 64.79% of death disaster in the construction industry occurs in the temporary structures including scaffolds and ladders.

Perception and Attitude toward Group Health Management and Service System for Small and Medium Industries in Inchon (인천지역 중소규모 사업장들의 보건관리대행제도에 대한 인식 및 태도)

  • Park, Chong-Yon;Roh, Jae-Hoon;Kim, Kyoo-Sang;Lee, Kyung-Jong;Moon, Young-Hahn
    • Journal of Preventive Medicine and Public Health
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    • v.26 no.1 s.41
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    • pp.86-95
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    • 1993
  • To investigate perception and attitude toward Group Health Management and Service System for Small and Medium Industries, a survey using self-administered questionnaire was conducted to a part of industries in Inchon, at October 1992. Major dependent variables were perception, attitude, and practice related with Group Health Management and Service System; these variables were measured by 3-point Likert like scale consisted of 7, 5, and 5 items, respectively. Data were collected in 149 industries,72.7% out of 205. Perception nab slightly high, 1.25; attitude was some positive, 1.46; and practice was some passive,0.94. Major determinants of perception, attitude, and practice were sex and age of industry's health manager; perception influenced upon attitude, and perception and attitude had positive effect upon practice. To activate Group Health Management and Service System, it is necessary to develop education and promotion programs for industry's health managers of small and medium industries.

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A Comparative Analysis of the Level of Occupational Health : Before and After the Subsidiary Program on Health Care Management of Small Scale Industries (영세사업장 보건관리 지원사업 실시 전후의 산업보건수준 비교 분석)

  • Jung, Hye Sun
    • Korean Journal of Occupational Health Nursing
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    • v.4
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    • pp.58-83
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    • 1995
  • The small scale industries which have less than 30 employees occupy 86.5% of total number of industries in Korea. And though they have higher accident rate and lower environmental condition than big industries, it has been not mandatory to appointing health care manager at factory. So, from 1993, government subsidizes to the health care management of small industries. The purpose of this study is to identify the real feature of health care status in small industries, and to evaluate the level of health care management, before and after the subsidiary program. 65 small plating industries which have been managed by the same health care management support institution in 1993 were selected for study. Of the 65 industries, 3 which have not taken both environmental evaluation and health screening in 1994, and 9 which have closed were excluded from study sample. And the remaining 53 were analyzed by using the results of environmental evaluation and health screening, reported to the Ministry of Labor, before and after the subsidiary program, the analysis was done by the comparison of the two year paired data of the same industry. Over-permissible-limit rate, health screening implementation rate, above grade C rate were calculated and compared. The status of health care management ; 1. Of the sample industries, 96.9% provide protective equipment and 80.0% set up ventilating system. Protective gloves (89.2%) and protective clothing (80.0%) are widely provided, but ear plugs (4.6%) are rarely provided. 21.5% of the protective equipment are well put on, and 40.4% of the ventilating systems function well. 2. In 1993, 35 industries, 53.8% of the sample, checked working environment twice. Over-permissible-limit rates of heavy metal (12.2%), suspended particle (11.1%), noise (5.5%) were high. To put on protective equipment and to set up local ventilating system were pointed out by the examiners. 3. General health screening was done at 63.1% of the sample industries and 35.3% of total workers were examined. Specific health screening was done at 93.8% of the sample industries and 75.4% of workers were examined. 15.5% of workers was provided to be above grade C and to have digestive system disease (43.3%), circulatory disease (18.9%), and hematopoietic disease (14.2%), etc. 4. In 1993, the subsidiary program of health care management was provided in forms of health education, health counseling, and rounding check of working field. And 61.5%, 83.0%, 55.4% of sample industries respectively received it. The average visit per industry was 1.8. Comparisons of the level of occupational health before and after the subsidiary program ; 1. Over-permissible-limit rates of hazardous factors of 1993 and that of 1994 were compared. The rates of suspended particle, noise, organic solvent of 1994 (37.5%, 13.4%, 24.2% respectively) were higher than that of 1993 (25.0%, 6.0%, 6.3% respectively). In the case of acid, there was no difference between the rate of 1993 and that of 1994. Only the rate of heavy metal decreased from 12.9% in 1993 to 3.0% in 1994. 2. General health screening was done at 38.7% of the sample industries in 1993 and at 44.6% in 1994. But the implementation rate of specific health screening decreased from 72.4% in 1993 to 64.6% in 1994. 3. The implementation rate of specific health screening was analyzed by some health factors. The rate of suspended particle increased from 61.8% in 1993 to 91.2% in 1994. But the rates of the others-noise, organic solvent, heavy metal, specific chemical substances-decreased. 4. Above grade C rate in health screening increased from 27.8% in 1993 to 35.5% in 1994. But that of endocrine disorders and pulmonary disease decreased.

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An Evaluative Study of a Subsidiary Program in Small Scale Industries (소규모사업장 보건관리지원사업에 대한 평가연구)

  • Lee Myung Sook;Choe Byung Soo;Kim Myung Soon
    • Journal of Korean Public Health Nursing
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    • v.11 no.2
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    • pp.12-37
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    • 1997
  • This study was performed to evaluate the subsidiary program on occupational health services in small scale industries. The survey of occupational health services was undertaken in 346 industries from July 1 to August 31. 1994. The major results were as follows ; 1. The subsidiary program on occupational health services The evaluation of working environments were conducted in 305 industries, $42.3\%$ of the industries had the harzardous agents exeeding TLV. Special medical examinations were done in 310 industries. the results were detected $C(33.3\%).\;D_1(0.8\%), D_2(5.4\%)$. Health management were done in 341 industries, the average visits for a industry were 3.8 times. The activities of health management were included to check of the workplace. health education, health counselling, etc. 2. The recognition of the employees and employers on occupational health services $91.5\%$ of employers and $87.0\%$ of workers felt healthy themselves. But $39.7\%$ of employers and $21.2\%$ of workers were under the stress from their jobs or home affairs. The workers perceived more harmful for the hazardous agents than the employers. $32.8\%$ of employers and $42.9\%$ of workers perceived that employer's efforts were the most important things to protect for the hazardous agents. The result of the evaluation of working environments were understood by $57.3\%$ of employers and $24.5\%$ of workers. The notification of medical examinations were recognized $83.9\%$ of employers and $50.3\%$ of workers. Many employers and workers felt the necessities of health management in small scale industries. The priorities of health manegement were different between employers and workers. Employers' priorities were as follows ; follow up care of medical examination$(97.3\%)$, health counselling$(93.7\%)$, planning of health$(93.5\%)$, health education of occupational diseases$(93.2\%)$, health education of chronic diseases$(93.5\%)$, etc. Workers' priorities were as follows ; follow up care$(93.4\%)$, health counselling$(94.3\%)$, health education of occupational diseases$(93.0\%)$. first aids$(92.0\%)$. etc.

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A Developmental Study on Preventing Occupational Disease Programme in Small- Medium Sized Industries (보건관리대행사업장 직업병예방관리 사업 프로그램 개발에 관한 연구)

  • Lee Myung-Sook
    • Journal of Korean Public Health Nursing
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    • v.9 no.2
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    • pp.104-114
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    • 1995
  • This study was designed to develop preventing occupational disease programme in small-medium scale industries. The intervention was done in 354 enterprises from July to December in 1993 by health personnels in mobile occupational health centers. The summarized results of the above achievements were as follows. 1. Total number of enterprises were 354. Among them $66.9\%$ was under 100 workers, $26.6\%$ was u!1der 200 workers, and $6.5\%$ was belong to over 200 workers. The majority manufactures were non-metallic mineral product industries $(11.3\)$ fabricated metal product industries $(11.0\%)$. and textile industries $(10.7\%)$. 2. In 1993, for 350 enterprises were carried out evaluation of workplace environment. A total of $76.3\%$ industries were found to improper showing higher level of hazardous agent than the TLV. Noise and dust are the typical agent of which levels in workplace were high in most of industries. 3. A total 60 cases $(0.8\%)$ of occupational diseases were detected through physical check-up from 7,394 industrial workers in 1993. Detection rate by hazardous agent was highest among workers in relation to dust, and secondly highest to noise. 4. Through the systematic approach by hazardous agent was increased to the monitoring of work condition and follow up care of occupational disease. In future, there should be development in the scaled check list of preventing occupational disease management.

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The Experience of Nurses Who are working in the Government-Funded Subsidized Occupational Health Program for Small Scale Industries : Focus Group Interview (소규모사업장 보건기술지원사업에서의 간호활동경험 : 포커스그룹 인터뷰)

  • Han, Young-Ran;Kim, Soo-Geun;Ha, Eun-Hee
    • Korean Journal of Occupational Health Nursing
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    • v.11 no.2
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    • pp.132-149
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    • 2002
  • Purpose: This study was conducted to provide the fadamental information to prepare better Occupational Health Program for SSI based on the evaluation of the experience of nurse who were working in the Government-funded subsidized occupational health program for SSI. Method: The focus group method was used. Data was collected using focus group interviews and analyzed in the framework of the Grounded theory method as mapped by Strauss and Corbin(1990). The subjects were 14 nurses. Result: We identified 60 concepts, 30sub-categories and 6 categories(Table 1). Categories were Various services, Difficulties in implement Services, Successful strategies, Program Evaluation, Alternative Plans and Adaptation to new field. Conclusion: Nurses evaluated the effect of this program that autonomous health management ability has not changed although the possibility for the small scale industries to start the health management arose by acknowledging the importance of the health management of the workplace. In spite of many difficulties in implement services, nurses provided various health services using successful strategies. They suggest that various programs such as a model set-up suitable for the quality of workplaces and a role model set-up of the occupational health nurse for SSI as well as various efforts for the activated this program were needed. Nurses had a hard time in unfamiliar field when they began this program and overcame this difficulties with various strategies.

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A Study on the Cuf-off Speed of Small-scale Wind Power System for Battery Charging (배터리 충전을 위한 소형풍력 발전 시스템의 한계 풍속에 관한 연구)

  • Ku, Hyun-Keun;Lee, Hyung-Uk;Kim, Jang-Mok
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.63 no.4
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    • pp.484-489
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    • 2014
  • Three phase PWM(Pulse Width Modulation) converter of the small-scale wind power system is able to charge battery under the rated wind speed regions. However, it is impossible to control output power of converter at the over win speed region because back-EMF(Electro Motive Force) of PMSG(Permanent Magnet Synchronous Generator) is higher than the battery terminal voltage of PMSG is reduced. However, the cut-off wind speed exists although battery charging algorithm is implemented by flux weakening control method. Therefore, this paper performs analysis of other factors which affects limitation wind speed. The validity of the analysis are verified through simulation.

A Study on Fitness of ERP template Standardization Methodology for Medium and Small-sized Enterprises (중소기업 ERP 템플릿 표준화 방법론의 프로세스 적합성에 관한 연구)

  • 조영빈;송희석;김성희
    • The Journal of Society for e-Business Studies
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    • v.8 no.4
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    • pp.1-16
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    • 2003
  • ERP implementations are known to be unusually difficult, even when compared to other large-scale systems developing in a firm level, because it requires a substantial investment of time, money, and internal resources. Moreover, medium and small-sized enterprises that are increasingly adopting ERP feel much difficult due to the lack of resources. To promote the spread of ERP in medium and small-sized enterprises, "ERP template standardization methodology" led by government has been used for constructing ERP system in Korea. In this study, we present a study to measure fitness between ERP standard templates and business processes of 10 small enterprises in 5 industries. Also, we define a fitness measure suitable for this purpose. We car find that ERP template standardization methodology is partly adequate to establish ERP systems and it is required to add to templates which support the differences of business process.

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