Natural Hazards Threats to Critical Infrastructure in Algeria
Djillali BENOUAR USTHB, Faculty of Civil Engineering, Algeria [email_address] International Disaster and Risk Conference (IDRC2010) Davos (Switzerland), 30 May-04 June 2010 Natural Hazards Threats to Critical Infrastructure in Algeria
Algeria’s size, varied topography and geographical location make it particularly susceptible to the occurrence of natural disasters such earthquakes and floods.
INTRODUCTION <ul><li>Critical infrastructures in Algeria are made up of the following sectors: energy and utilities (electrical power, natural gas and oil transmission systems), communications (telecommunications and broadcasting systems); services (financial services, food distribution and health care); transportation (air, rail, marine and surface); safety (emergency services) and government services (major government facilities and information networks). </li></ul>
<ul><li>Natural threats that have been identified as those most likely to impact upon Algeria’s national critical infrastructure which have a potential to cause disastrous situations in Algeria are: </li></ul><ul><li>Earthquakes, Floods, Flash Floods, Landslides, Storms and Fires. </li></ul><ul><li>Climate change is increasing the frequency and severity of extreme weather events (Algiers 2001 and Ghardaia 2008 floods). </li></ul>
INTRODUCTION <ul><li>Most of Algeria’s population, built environment, and wealth, are increasingly concentrated in a small number of highly vulnerable cities and many such communities are at risk from multiple hazards and mainly earthquakes and floods. </li></ul><ul><li>Earthquakes have the highest potential for causing catastrophic casualties, property damage, and economic disruption. </li></ul>
<ul><li>In Algeria, the activities related to the oil industry represent 98% of the total amount of export. More than 60 establishments and installations are located on the coast which is an active seismic zone. </li></ul><ul><li>There are also more 21.000 km of pipelines in the whole country crossing high risk zones as the nothern part of the country which is an active seismic zone. </li></ul>
Geographical location of the oil and gas network
<ul><li>96 sites are at risk of industrial disaster at Sonatrach installations </li></ul>Explosion at the petro-chemical plant at Skikda (Algeria) in 2004
Explosion at the LNG at Skikda January 2004 were 27 people lost their lives. <ul><li>Three units of liquéfaction over the six of the installation were highly damaged by explosions followed by intense fires. </li></ul>
<ul><li>More than 3 876 industrial installations at high risk were inventoried in Algeria, some of them are within the urban sites and among those sites 11 are in Algiers among which are the refinery of Baraki, le pipeline providing gas for the capital and the electrical power plant of Bab Ezzouar. </li></ul>
After the Skikda and Arzew Disasters <ul><li>U.S.$ 1,5 billion for disaster prevention for the infrastructures of Sonatrach </li></ul>
OUVRAGES SUR LE RESEAU DES CHEMINS COMMUNAUX OUVRAGES SUR LE RESEAU DES ROUTES NATIONALES
Effect of the 21 May 2003 earthquake on bridges sur Déplacement latéral du tablier RN24 Pont sur Oued Sebaou Eclatement des enrobages du béton du fut de la pile -, Pont sur Oued Isser Liquéfaction du sol au niveau de Oued Isser Affaissement de terrain au niveau de l’Ouvrage a Oued Isser
Déplacement de tablier pour de VIADUC d’El-Harrach Opérations de Réhabilitation et de Renforcement Opération a été confiée à la Société Algérienne des Ponts et Travaux d’Art (S.A.P.T.A) Est-ce que les fréquences propres du l’ouvrage ont été vérifiées (par tests de vibration par exemple), après cette opération de réhabilitation et de renforcement?