• Journal of the Society of Naval Architects of Korea
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• v.33 no.2
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• pp.96-110
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• 1996

Aging ships can suffer structural damage due to corrosion, fatigue crack etc., and possibility of catastrophic failure of seriously damaged ships is very high. To reduce the risk of loss of ships due to hull collapse, it is essential to evaluate ultimate hull strength of aging ships taking into account various uncertainties associated with structural damages. In this paper, ultimate strength-based reliability analysis of ship structures considering wear of structural members due to corrosion is described. A corrosion rate estimate model for structural members is introduced. An ultimate limit state function of a ship hull is formulated taking into account corrosion effects. The model is applied to an existing oil tanker, and reliability index associated with hull collapse is calculated by using the second-order reliability method (SORM). Discussions on structure safety of corroded ships are made.

• Cement
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• s.90
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• pp.18-21
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• 1983

• Nuclear industry
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• no.7
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• pp.41-44
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• 1979

$\lceil$방사성폐기물관리에 관한 관계성청검토 group$\rfloor$ (IRG)는 최근 $\lceil$폐기물처리에 있어서는 질서 정연한 착실한 의지결정 program에서 추구되어 야 할 것이다.$\rfloor$라고 하는 최종보고서를 정리, 발표하였다. 이 최종보고서에서는 IRG의견해, 정책검토 권고가 들어있는 IRG에 보내진 comment에 대해서도 그 전부에 대해 반영하도록 시도되었다.

• 월간산업보건
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• s.182
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• pp.45-50
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• 2003

• 월간산업보건
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• s.181
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• pp.48-52
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• 2003

• 월간산업보건
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• s.178
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• pp.61-64
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• 2003

• 월간산업보건
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• s.180
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• pp.47-50
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• 2003

• 월간산업보건
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• s.179
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• pp.30-34
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• 2003

• TTA Journal
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• s.131
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• pp.138-140
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• 2010

• Tunnel and Underground Space
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• v.23 no.2
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• pp.99-109
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• 2013

The slopes of open-pit mine are typically designed without considering the reinforcement and support method due to the economical efficiency. However, the long-term stability of final pit slope is needed in some case, therefore the appropriate measures that can improve the stability are required. In this study, the field survey and laboratory test were carried out in S limestone mine. The stability assessment of final pit slope was performed through the stereographic projection method, SMR, and numerical analysis. And countermeasures for stabilization were proposed. The results of analysis show that full scale of slope failure is not expected but the failures of bench slope scale are likely to occur. In oder to increase the stability of bench slope, we suggested the remedial methods as follows: excavating the final pit slope by pre-splitting blasting, placing the wide berm in the intermediate bench slope and installing the horizontal drainage hole in the place of local ground water runoff.