• 한국철도학회:학술대회논문집
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• 한국철도학회 2010년도 춘계학술대회 논문집
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• pp.1-5
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• 2010

The Hyundai Rotem company is due to be conducted the main line Speed Qualification Test as regulated by CFR for SEPTA EMU and SCRRA Bi-level coach project. The regulated test items per 49CFR213.345 are wheel/rail interaction forces and carbody/truck accelerations during running on main line. Therefore the special two sets of instrumented wheelset (IWS) per each project have been made for measuring the interaction forces between wheel and rail at four wheels of one truck during running on main line. In this paper, regarding Speed Qualification Test, the required test items and data analysis method per 49CFR213.345 and the preparation status of instrumented wheelsets (IWS) are introduced.

• Structural Engineering and Mechanics
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• 제53권6호
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• pp.1271-1286
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• 2015

Recently, US NRC revised fracture toughness requirements as 10CFR50.61a to reduce the conservatism of 10CFR50.61. However, unlike previous studies relating to the initial regulation, structural integrity evaluations based on the alternative regulation are not sufficient. In the present study, PTS and P-T limit curve evaluations were carried out by using both regulations and resulting data were compared. With regard to the PTS evaluation, the results obtained from the alternative requirements were satisfied with the criterion whereas those obtained from the initial requirements did not meet the criterion. Also, with regard to the P-T limit curve evaluation, operating margin by 10CFR50.61a was greater than that by 10CFR50.61.

• 한국압력기기공학회 논문집
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• 제10권1호
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• pp.44-50
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• 2014

There were many flaw issues of reactor vessel head penetration in USA fleets. USNRC issued 10CFR50.55a to implement reactor vessel head penetration ultrasonic examination performance demonstration(PD) in US for enhancement of inspection reliability. After September 2009, all US utilities inspected their RVHP with PD qualified system. Korea Hydro and Nuclear Power Company(KHNP) have developed reactor vessel head penetration performance demonstration system for ultrasonic test to apply for pressurized light-water reactor power plants in accordance with 10CFR50.55a since September 2011. RVHP configuration surveying and analysis, code requirement analysis, and performance demonstration specimen design were performed up to this day. Fingerprinting of manufactured specimen, development of test data management program, development of operation procedure, input of flawed data, and development of final report will be performed for the next step. This paper describes the development status of the performance demonstration system for reactor vessel head penetration ultrasonic examination in Korea.

• 한국식품위생안전성학회지
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• 제23권1호
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• pp.19-25
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• 2008

본 연구는 검역원의 선행요건 항목을 식약청 및 미국 FSIS의 선행요건과 비교 검토함으로써, 보완되어야 할 검역원 선행요건의 내용과 범위를 제시하고자 하였다. 검역원과 식약청 모두 HACCP 고시에서 선행요건 평가항목을 제시하고 있으나 서로 상이한 부분이 많이 발견되므로 관리항목 범위와 내용을 조정할 필요성이 지적되었다. 또한 HACCP 적용업소가 지속적으로 확대되면 업종별 작업환경조건이 다양해지므로 HACCP 고시에서는 선행요건 관리항목의 기본 틀만 제시하고 세부지침 및 일치 불일치 조건은 별도로 명시하여 관리하는 것이 선행요건의 현장적용 활용성을 높이고 평가업무의 표준화를 이루는데 필수적인 것으로 파악되었다.

• Nuclear Engineering and Technology
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• 제49권5호
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• pp.1109-1112
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• 2017

The precise prediction of radiation embrittlement of aged reactor pressure vessels (RPVs) is a prerequisite for the long-term operation of nuclear power plants beyond their original design life. The expiration of the operation licenses for Korean reactors the RPVs of which are made from SA533B-1 plates and welds is imminent. Korean regulatory rules have adopted the US Nuclear Regulatory Commission's transition temperature shift (TTS) models to the prediction of the embrittlement of Korean reactor pressure vessels. The applicability of the TTS model to predict the embrittlement of Korean RPVs made of SA533B-1 plates and welds was investigated in this study. It was concluded that the TTS model of 10 CFR 50.61a matched the trends of the radiation embrittlement in the SA533B-1 plates and welds better than did that of Regulatory Guide (RG) 1.99 Rev. 2. This is attributed to the fact that the prediction performance of 10 CFR 50.61a was enhanced by considering the difference in radiation embrittlement sensitivity among the different types of RPV materials.

• 한국압력기기공학회 논문집
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• 제6권2호
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• pp.9-15
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• 2010

US NRC issued rulemaking of 10CFR50.55a to perform the Perservice and Inservice inspection for Reactor Vessel Head Penetration Nozzle of US Nuclaer plant. The rulemaking was required the EPRI Demonstration to verify the NDE technique performing special Ultrasonic examination. In order to meet this requirement, the UT and ECT procedures was demonstrated and the NDE personnel were qualified by EPRI. In this paper, the NDE technique and analysis method are described the Preservice inspection for the Palo Verde #1/2/3 Replacement Reactor Vessel Head Penetration Nozzle using the qualified procedures and personnel.

• 항공우주정책ㆍ법학회지
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• 제29권2호
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• pp.183-204
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• 2014

미 911 사건으로 전 세계 민간 항공보안 시스템이 획기적으로 변화하였다. 특히 미국정부는 기존의 항공보안 시스템을 완전히 개선한 새로운 항공보안 시스템을 구축하였다. 이러한 변화중 가장큰 변화는 항공보안 법 규정이다. 새로 2001년 제정된 항공교통보안법에 따라. 미국의 항공보안 강화를 위하여 관련된 연방항공보안 규정이 개정되었다. 이러한 법규정을 근거로 하여 공항보안 프로그램, 항공사보안프로그램, 탐지견 프로그램, 행동탐지요원 프로그램, 기내 무장보안요원 프로그램 등 새로운 항공보안 프로그램을 개발하게 되었다. 이러한 프로그램을 통하여 미국 항공보안 시스템은 더욱더 개선 발전되었다. 또한 항공교통보안법을 근거로 하여 설립된 미 교통보안청은 미국의 항공보안 발전에 크나큰 기여를 하게 되었다. 본 논문의 목적은 미국의 항공보안 시스템, 특히 항공보안 법령에 대한 연구를 하며 이를 한국의 항공보안 법령과의 비교 연구하여 한국 항공보안 시스템의 발전을 제공하고자 하였다.

• 농촌의학ㆍ지역보건
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• 제27권1호
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• pp.1-8
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• 2002

Pest control is required for protecting the food supply and for controlling disease vectors. Unfortunately, there is no perfectly safe form of pest control. Pesticides are commonly used for pest control. Pesticides are defined under the US Federal Insecticide Fungicide and Rodenticide Act(FIFRA) as any substance or mixture of substances intended to prevent, destroy, repel, or mitigate pests, and any substance or mixture of substances intended for use as a plant regulator, defoliant, or dessicant(40 CFR Part 152). Currently in the United States, there are 890 active ingredients registered as pesticides. Approximately one billion pounds of active ingredient are used in the US per year. Unlike most chemicals(anti-neoplastic and anti-micobial medications are the principal exceptions), pesticides are specifically designed to kill and cause harm. Because society allows these chemicals to be disseminated into the environment, it is important to monitor the health effects associated with these releases. This represents an important justification for establishing and maintaining surveillance systems for acute pesticide-related illness and injury. A comprehensive, national surveillance system for acute pesticide-related illness and injury does not currently exist in the US. Although the United States has several surveillance systems for this condition, none provide a complete understanding of the problem of acute pesticide-related illness and injury. The Toxic Exposure Surveillance System(TESS) and Bureau of Labor Statisitics(BLS) are useful for assessing magnitude and trends. The state-based surveillance systems are more useful for timely identification of outbreaks and emerging problems. Efforts are underway to increase the number of states that conduct surveillance, and to broaden the use of the standardized case definition to facilitate aggregation of data across states. Through such efforts, a comprehensive, national surveillance system may be attainable.

• 방사성폐기물학회지
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• 제12권4호
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• pp.299-314
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• 2014

인양장비는 원자력발전소에서 발생하는 사용후핵연료를 운반하는 운반용기를 인양하기 위해 사용된다. 본 연구는 원자력 안전위원회고시 제2013-27호와 미국 10CFR Part 71 ${\S}71.45$에서 규정하는 기술수준에 따라 이론적인 방법과 유한요소방법으로 인양장비의 구조적안전성을 평가하였다. 이론적으로 평가한 결과 모든 구성 요소에서의 응력이 응력제한치 내에 있어 운영상 발생하는 구조적 안전성을 확보하고 있는 것으로 판단하였다. 또한 유한요소해석을 통한 평가결과, 항복과 극한조건 모두에서 설계기준을 만족하는 것으로 평가되었다. 모든 구성요소에서 충분한 안전여유도(항복조건에서 3 이상의 안전율, 극한조건에서 5 이상의 안전율)를 갖는 것으로 나타나 구조적으로 안전하다고 판단하였다.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2007년도 추계학술대회 및 제23회 정기총회
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• pp.283-286
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• 2007

최근 우리나라 여러 주요 항만에 해상교량의 건설이 진행 중이거나 계획 중에 있는데, 이들 교량의 설치 위치나 규모가 주로 경제적인 측면만을 강조하여 이루어짐으로써, 선박 동항안전에 위협을 주고 있으며, 이해 당사자 간의 갈등이 고조되고 있는 현실이다. 따라서 이 연구에서는 선박 통항로 상에 많은 해상교량을 가지고 있는 미국의 해상교량 관련 법령과 절차를 조사${\cdot}$연구하여 우리나라의 제도를 제안하는데 참조하고자 한다.