• 한국건축시공학회:학술대회논문집
• /
• 한국건축시공학회 2021년도 봄 학술논문 발표대회
• /
• pp.19-20
• /
• 2021

Although various laws and regulations have been put in place to prevent slips and falls, many accidents still occur. In this study, the root cause of slips and falls not decreasing were investigated. There are five types of slip resistance test methods in the Korean Industrial Standards (KS). Namely, KS F 2375:2016, KS F 2601:2020, KS F 2602:2016, KS L 1001:2020, and KS G 5821-1:2020 are listed. These test methods are cited in building certification standards (BF and G-SEED), construction specifications, and other documents that specify slip safety criteria. As a result of the investigation, a number of errors in KS regulations and legal text, errors in the manufacture and operation of slip testers, and errors in the use of measured values were found. These errors threaten the public life safety and disrupt industrial sites, and must be corrected immediately.

• Nuclear Engineering and Technology
• /
• 제45권2호
• /
• pp.165-178
• /
• 2013

A comprehensive review on the technical standards about human factors (HF) design and software reliability maintenance for digital instrumentation and control (I&C) and human-machine interface technology (HMIT) in Japanese light water reactor nuclear power plants (NPPs) was given in this paper mainly by introducing the relevant activities at the Japan Electric Association to set up many industrial standards within the traditional framework of nuclear safety regulation in Japan. In Japan, the Fukushima Daiichi accident that occurred on March 11, 2011 has great impact on nuclear regulation and nuclear industries where concerns by the general public about safety have heightened significantly. However for the part of HF design and software reliability maintenance of digital I&C and HMIT for NPP, the author believes that the past practice of Japanese activities with the related technical standards can be successfully inherited in the future, by reinforcing the technical preparedness for the prevention and mitigation against any types of severe accident occurrence.

• 센서학회지
• /
• 제17권6호
• /
• pp.429-436
• /
• 2008

A system is designed and fabricated for the automatic low temperature calibration by comparison of industrial resistance thermometers. The cryostat is suitable for the calibration of four capsule type thermometers and four long stem thermometers. By the automatic temperature control of the cryostat, we could calibrate thermometers from $-200^{\circ}C$ to $0^{\circ}C$ for ${\sim}15$ hours by one fill of liquid nitrogen in the test run of the system. The uncertainty of the calibration for industrial platinum resistance thermometers using the automatic system is about 30mK with a 95.% confidence interval.

• 골판지포장물류
• /
• 제5권25호
• /
• pp.155-160
• /
• 1998

• 기술표준
• /
• 통권1호
• /
• pp.59-63
• /
• 2002

• 대한기계학회논문집A
• /
• 제34권1호
• /
• pp.73-78
• /
• 2010

재료의 인장 물성 측정 불확도 평가가 수행되었다. 인장 물성 측정에 영향을 주는 불확도의 요인이 구분되어 분석되었고 인장 시험으로부터 측정되는 측정량, 즉 탄성계수, 항복 강도 그리고 인장 강도의 불확도 평가 모델이 본 연구에서 제시되었고 각 측정량에 대한 대응하는 수학적 모델과 측정치로부터 각 측정치의 감도계수를 계산함으로서 유도 되었다. 각 모델에 근거하여 ISO 6892에 따라 결정되는 SUS316LN의 실험적 데이터로부터 인장 물성의 불확도가 평가되었다.

• 한국산업보건학회지
• /
• 제34권2호
• /
• pp.156-165
• /
• 2024

Objectives: This study aims to identify and analyze the exposure status of welding students in specialized high school welding labratories, compare it with the exposure to welding hazards of industrial workers, and seek to improve the educational environment for youth through domestic and international exposure standards. Methods: This study compares the level of exposure to hazardous factors in a welding laboratory of a vocational high school in Jeollanam-do and a welding process in a general industrial site by measuring the work environment. A 10-question survey was conducted to review the effects of welding hazards on the human body, carcinogenicity information, international (US, UK, France) exposure standards, general characteristics between the two groups, and awareness of occupational health. Results: Exposure to hazardous factors in both groups was below the standards set by MOEL. Specialized high school students were exposed to higher levels than workers, and some hazardous factors exceeded the standards when compared to international exposure standards. During the survey, students were less aware of the hazards of welding, safety and health education, and the need for work environment measurement than workers. Conclusions: For the respiratory protection of students in vocational high school welding labs, it is necessary to create a comfortable training environment. Exposure standards for harmful factors should be strictly applied, such as overseas standards, or exposure should be limited by setting a limit on the number of hours of welding practice per week. In addition, it is necessary to conduct safety and health education for welding students to raise their awareness of the importance of measuring the working environment and wearing appropriate protective equipment.

• 경영과정보연구
• /
• 제33권4호
• /
• pp.63-75
• /
• 2014

본 연구는 시장구조에 초점을 맞추어 산업의 표준화 활동 결정요인을 우리나라 제조업에 대해서 계량적으로 검증한다. 단체표준 제정 및 개정 여부를 산업 차원에서 표준화 활동의 대리변수로 삼았고, 그 결정요인으로 시장구조 이외에도 기술적 기회, 자본집약도, 수출비율, 산업특성(조립산업 여부) 등을 고려하였다. 분석대상은 식료, 섬유, 화학, 비금속광물, 금속, 전기전자, 기계, 자동차, 조선 등 9개 업종이며, 2006-2009년 기간 동안 혼용자료(pooling data)를 사용하였다. 추정방법으로는 로지스틱 회귀분석(logistic regression analysis)을 활용하였다. 연구결과, 시장집중도는 산업의 단체표준화 활동에 아무런 영향을 미치지 않는 것으로 분석되었다. 이는 독점적 시장일수록 소수의 대기업들이 공적 표준(de jure standards)인 단체표준보다는 '사실상의 표준(de facto standards)'에 더 관심을 가지고 있을 가능성을 보여준다. 시장구조 이외의 변수의 경우에는 기술적 기회와 조립산업 여부는 단체표준화 활동에 대해서 정(+)의 유의한 효과를 보인 반면, 자본집약도와 수출비율은 단체표준화와는 연관이 없는 것으로 분석되었다.

• 한국진공학회:학술대회논문집
• /
• 한국진공학회 2014년도 제46회 동계 정기학술대회 초록집
• /
• pp.359-359
• /
• 2014

In this study, surface plasmon resonance structures for the selective and the enhanced transmission of infrared light were designed. In order to relieve the large discontinuity of refractive index between air and metal hole array, $Si_3N_4$ was used as the impedance matching layer. Experimental parameter were calculated and determined in advance by the rigorous coupled wave analysis (RCWA) simulation, and then the experiment was carried out. A 2-dimensional metal hole array structures were patterned on the size of $1{\times}1cm^2$ GaAs substrate using photolithography process, and 5 nm thick Ti, 50 nm thick Au were deposited by E-beam evaporator, respectively. Subsequently, $Si_3N_4$ films with various thicknesses (150, 350, 550, and 750 nm) were deposited by plasma enhanced chemical vapor deposition (PECVD). For the comparison, transmittance of specimens with and without $Si_3N_4$ was measured using Fourier transform infrared spectroscopy (FTIR) in the range of $2.5-15{\mu}m$. Furthermore, the surface and the cross-sectional images were collected from the specimens by scanning electron microscopy (SEM). From the results, it was demonstrated that the transmittance was enhanced up to 80% by the deposition of 750 nm $Si_3N_4$ at $6.23{\mu}m$. It has advantage of enhanced transmission despite the simple fabrication process.

• 한국산학기술학회논문지
• /
• 제6권1호
• /
• pp.17-23
• /
• 2005

지식, 기술, 정보가 경쟁력의 원천이 되는 산업 발전의 변화추세에 따라 세계 각국은 일-교육$\cdot$훈련-자격의 긴밀한 연계체제인 국가직업능력표준을 통해 국가 인적자원 개발 시스템을 개선해 나아가고 있다 우리나라에서도 노$\cdot$사$\cdot$정 합의에 의해 2002년부터 전 산업분야에 적용될 국가직업능력표준이 개발되고 있다. 본 연구에서는 이렇게 개발된 국가직업능력표준을 이용하여 우리나라 기능대학/전문대학의 컴퓨터 응용기계설계과에서 활용할 수 있는 교육과정과 교재개발방안을 개발하여 제시한다.