International Journal of Constructive Research in Civil Engineering (IJCRCE) Volume 4, Issue 2, 2018, PP 1-15 ISSN 2454-8693 (Online) DOI: http://dx.doi.org/10.20431/2454-8693.0402005 www.arcjournals.org International Journal of Constructive Research in Civil Engineering (IJCRCE) Page | 1 Utilizing Modern Systems in Online Replacement of Pipelines in Crisis Management and Passive Defense of Vital Lifelines Kaveh Ostad-Ali-Askari 1* , Saeid Eslamian 2 , Reza Ershadi-Farsani 3 , Theodore C. Crusberg 4 , Vijay P. Singh 5 , Nicolas R. Dalezios 6 , Mahnour Khosravi-Nia 7 1* Department of Civil Engineering, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran. 2 Department of Water Engineering, Isfahan University of Technology, Isfahan, Iran. 3 Department of Civil Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran. 4 Department of Biology and Biotechnology, Worcester Polytechnic Institute, Worcester, MA 01609-2280, U.S.A. 5 Department of Biological and Agricultural Engineering & Zachry Department of Civil Engineering, Texas A and M University, 321 Scoates Hall, 2117 TAMU, College Station, Texas 77843-2117, U.S.A. 6 Laboratory of Hydrology, Department of Civil Engineering, University of Thessaly, Volos, Greece & Department of Natural Resources Development and Agricultural Engineering, Agricultural University of Athens, Athens, Greece. 7 Department of Urban Engineering, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran. 1. INTRODUCTION Since our country is located on the earthquake line, every once in a while, we witness horrifying events in different parts of the country, which leads to death and injury of a large number of our compatriots and major damages to our country‟s economy. Similar more severe events in other countries, especially in advance countries, should bring us to this belief that earthquake should not be an unappeasable phenomenon and its related losses and damages should not be considered as unchangeable; yet we should become determined and like other countries, we should start to deal with it in a serious manner. Through the valuable progresses in the science and technology, important steps have been taken in the path of innovation, production, constructiveness and optimization of economic conditions in our country has fortunately provided the required ground for a serious act in this matter and maybe it leaves no more excuses for accepting continuous damages of this matter. 2. ITEMS OF INVESTIGATION Generally, the exchange or repair of pipeline networks is done for various reasons. Inappropriate, design and execution of pipe networks or cable lines, especially failure to be futuristic and to consider the issue of population growth rate that utilizes these facilities, in designing these networks, leads to the inability of these networks‟ capacities to meet the demand of the entering population in city communities. Also, the lack of geotechnical and scientific, technical and engineering tectonic studies for understanding the quantity, material, density and other features of soil layers in order to Abstract: Every once in a while in sidewalks and streets of our country’s cities and even rural areas, we are witnessing various drillings from different city organizations and institutes including municipalities, electricity companies, and etc. These drillings that are being done for different reasons such as creating pipeline networks for transferring water, sewage, natural gas and even transfer and distribution of petroleum fuels including raw oil and in some cases for cable lines of electricity and telecommunications, it might be for the first time and in fact for constructing and installing new pipelines and cable lines or that due to defects and damages to existing underground pipes and cables, it would be necessary to drill, excavate and exchange or repair networks. Keywords: Crisis management, passive defense, vital lifelines *Corresponding Author: Dr. Kaveh Ostad-Ali-Askari, Department of Civil Engineering, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran.