School Seismic Safety and Risk Mitigation

Author(s):  
Marla Petal ◽  
Ben Wisner ◽  
Ilan Kelman ◽  
David Alexander ◽  
Omar-Dario Cardona ◽  
...  
Author(s):  
Marla Petal ◽  
Ben Wisner ◽  
Ilan Kelman ◽  
David Alexander ◽  
Omar-Dario Cardona ◽  
...  

2019 ◽  
Vol 36 (4) ◽  
pp. 1238-1257 ◽  
Author(s):  
Gangling Hou ◽  
Meng Li ◽  
Sun Hai ◽  
Tianshu Song ◽  
Lingshu Wu ◽  
...  

Purpose Seismic isolation, as an effective risk mitigation strategy of building/bridge structures, is incorporated into AP1000 nuclear power plants (NPPs) to alleviate the seismic damage that may occur to traditional structures of NPPs during their service. This is to promote the passive safety concept in the structural design of AP1000 NPPs against earthquakes. Design/methodology/approach In conjunction with seismic isolation, tuned-mass-damping (TMD) is integrated into the seismic resistance system of AP1000 NPPs to satisfy the multi-functional purposes. The proposed base-isolation-tuned-mass-damper (BIS-TMD) is studied by comparing the seismic performance of NPPs with four different design configurations (i.e. without BIS, BIS, BIS-TMD and TMD) with the design parameters of the TMD subsystem optimized. Findings Such a new seismic protection system (BIS-TMD) is proved to be promising because the advantages of BIS and TMD can be fully used. The benefits of the new structure include effective energy dissipation (i.e. wide vibration absorption band and a stable damping effect), which results in the high performance of NPPs subject to earthquakes with various intensity levels and spectra features. Originality/value Parametric studies are performed to demonstrate the seismic robustness (e.g. consistent performance against the changing mass of the water in the gravity liquid tank and mechanical properties) which further ensures that seismic safety requirements of NPPs can be satisfied through the use of BIS-TMD.


1996 ◽  
Vol 12 (2) ◽  
pp. 315-326
Author(s):  
Franz F. Sauter

In recent publications, the need for common terminology in the field of seismic safety and risk mitigation has been brought up. Definitions for a wide range of terms in the field of seismic strengthening and upgrading of buildings has been suggested by several authors. Nevertheless, incongruities still persist and the meaning of such terms can have different connotations to the professionals, academicians and policy makers that make use of them. Some authors suggest that the seismic community should use terms in the same sense that words are used in ordinary communication. To pursue the goal of cleaning and standarizing our technical language, and in order to further focus the discussion on this matter, the author presents a critical review of the interpretation of the most common terms used in the earthquake engineering community. Based on dictionary definitions and the practical, common sense application of these terms, a summary of the proposed terminology is presented.


2013 ◽  
Vol 13 (8) ◽  
pp. 2031-2039 ◽  
Author(s):  
J. C. Audru ◽  
J. L. Vernier ◽  
B. Capdeville ◽  
J. J. Salindre ◽  
É. Mouly

Abstract. Martinique is a French island in the Lesser Antilles, with a high seismic hazard. In 2006, Martinican stakeholders involved in seismic safety formed the "Réplik" working group ("Aftershock" in French), the first of its kind in this region. This paper addresses a mid-term appraisal of the first seismic awareness campaign organised by Réplik from 2006 to 2011, and how it has modified, or not, local earthquake and tsunami preparedness. Despite efforts from Réplik to assess its efficiency through surveys, a growing gap is noted between the observed awareness and the actual preparedness of the public. As usual, gender, age, educational level, then boredom and saturation contribute to this discrepancy; strong cultural items may also influence the perception of actions. To remain efficient and respond to the public's expectations, Réplik must redirect its actions towards a cultural congruence of information: consideration of religion and local beliefs, comprehensive messages on TV and radio, use of the Creole language, participatory experiences and drills, and a little science. With this, the Réplik stakeholders can hope to increase Martinicans' involvement into the preparedness process, to cope quickly with a strong earthquake and this know-how can be shared with other seismically active islands in the Caribbean.


2015 ◽  
Vol 31 (2) ◽  
pp. 1083-1102 ◽  
Author(s):  
Raffaele Frascadore ◽  
Marco Di Ludovico ◽  
Andrea Prota ◽  
Gerardo Mario Verderame ◽  
Gaetano Manfredi ◽  
...  

Recent earthquakes have clearly shown the high vulnerability of existing reinforced concrete (RC) structures. There is a crucial need to find cost-effective and efficient strategies and methods to strengthen a large number of buildings (i.e., at a regional scale) before future major earthquakes occur. A viable strategy to prevent potential damage caused by earthquakes could be to selectively upgrade local capacity of individual structural components. In the aftermath of the 6 April 2009 L'Aquila earthquake, local retrofit work based on the use of fiber polymer reinforcement (FRP) were executed to increase the seismic capacity of lightly damaged public and private buildings. According to theoretical analyses carried out on six reinforced concrete (RC) school buildings in L'Aquila, a seismic safety level of about 60% of that requested in the design of a new building can be achieved in most cases by FRP-based strengthening of exterior joints.


2017 ◽  
Vol 4 (1) ◽  
pp. 62-66
Author(s):  
Luyen Ha Nam

From long, long time ago until nowadays information still takes a serious position for all aspect of life, fromindividual to organization. In ABC company information is somewhat very sensitive, very important. But how wekeep our information safe, well we have many ways to do that: in hard drive, removable disc etc. with otherorganizations they even have data centre to save their information. The objective of information security is to keep information safe from unwanted access. We applied Risk Mitigation Action framework on our data management system and after several months we have a result far better than before we use it: information more secure, quickly detect incidents, improve internal and external collaboration etc.


2020 ◽  
Vol 8 (2) ◽  
pp. 9
Author(s):  
Mohamad Zabidi Bin Ahmad ◽  
Rosylin Mohd. Yusof ◽  
Ahmad Rizal Mazlan

Purpose: The objective of this research is to highlight issues and review the Interbank Commodity Murabahah (CM) practice as a tool of liquidity requirement from both the Shariah and industry’s operational perspectives. Accordingly, this study seeks to analyze structure and mechanism of CM as instrument to meet the liquidity need of the Islamic financial institutions and provides an opportunity for investments. In doing so, the paper seeks to review issues related to Shariah and operations in Islamic banking. Design/methodology/approach: By conducting interview with Treasurers, Shariah Scholars and funding dealers of Islamic banks in Malaysia, the study evaluates reassessment on CM practices and operational issues in relation risk and compliance. The study focuses on Islamic Treasury Division of Islamic banks in Malaysia. Findings: The findings of the study suggest that the two most significant issues in Islamic liquidity management of Islamic banks in Malaysia are i) resembling interest ii) nature of tradability iii) structure of CM iv) the timing the transaction to be completed and v) the real brokerage cost involved in adopting the CM transactions. Research limitations/implications: The research proposes a risk mitigation and enhanced Shariah compliance framework such as strait through processing (STP) and commodity broker’s standard guideline for Islamic banks to adopt CM practices. Practical implications: This study provides direction and guidance to the Islamic Commercial Banks, Commodity Brokers and regulator (BNM) involved in the banking system to reflect upon the importance to understand the issues and limitation of CM. By highlighting the importance of efficiency in terms of time and cost saving together with Shariah issues, Islamic banks can design policies to enhance efficiency in order to either decide to maintain the adoption of CMP or to consider the proposed alternative. Social implications:Understanding the Shariah compliance and operational issues will enhance the integrity of Islamic banks which is consistent with Key Economic Growth Area of making Malaysia as International Islamic Financial Hub 2.0.


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