Safety Measures at the Port of Tokyo

Transcription

1 Safety Measures at the Port of Tokyo I. Earthquake Countermeasures for Port Facilities II. Promotion of Preventive Maintenance Management Akihisa Ishiyama, Managing Director TOKYO PORT TERMINAL CO.,LTD.

2 I. Earthquake Countermeasures for Port Facilities

3 1. Major Earthquakes in Recent Years in Japan Date Earthquake Magnitude Number of Missing and Dead 17 January, Hyogoken-nanbu Earthquake (Great Hanshin-Awaji Earthquake) 6.9 6, October, 2004 Mid Niigata prefecture Earthquake in July, 2007 Niigataken Chuetsu-oki Earthquake in March, Off the Pacific Coast of Tohoku Earthquake (Great East Japan Earthquake) 9.0 Approx. 22, April, Kumamoto Earthquake Collapsed quay walls and cranes Source: The Japan Civil Engineering Consultants Association 1995 Hyogoken-nanbu Prefecture Earthquake Breakwaters damaged by tsunami Source: Ministry of Land, Infrastructure, Transport and Tourism 2011 Off the Pacific Coast of Tohoku Earthquake

4 2. Location of Port of Tokyo [Port of Tokyo] Tokyo [Tokyo Bay] Map Date: Google Tokyo Tokyo Bay Map Date: Google

5 3. Status of Development High Earthquake-Resistance Quay Walls and Seismic Retrofitting of Bridges Takeshiba Terminal Tsukishima Terminal Hinode Terminal Harumi Terminal Shibaura Terminal Toyosu Terminal No No. 15 Shinagawa Terminal No Aomi Terminal North-South Port Access Road (Under Construction) Oi Terminal Inner Central Breakwater Reclamation Area Outer Central Breakwater Reclamation Area Legend High earthquake-resistance quay walls (48 berths) Completed or in progress (24 berths) Seismic retrofitting of bridges (10 bridges) Completed (8 bridges) Emergency Roads Planned (24 berths) In progress (2 bridges) Source: Bureau of Port and Harbor, Tokyo Metropolitan Government

6 4. High Earthquake-Resistance Quay Walls Ordinary Quay Wall (image) Having strength to withstand a strong earthquake High possibility to become unusable by a very strong earthquake Cargo handling impossible High Earthquake-Resistance Quay Wall (image) Having strength not to collapse by a very strong earthquake even though there may be some damage occurred Service can be resumed in a short period of time even after receiving an earthquake prevent displacement and collapse of quay walls through high strength piles and ground improvement reduce crane shake with seismic isolation devices Seismic Isolation Devices High Strength Piles Ground Improvement Strong Earthquake Very Strong Earthquake

7 5. Container Cranes with Seismic Isolation Devices (8 cranes installed) Seismic Force Seismic Isolation Device Set between crane body and traveling equipment Seismic isolation devices discourage seismic force from being transmitted to the crane bodies. Prevention of slip-off and lift of cranes Reduction of stress generated in crane structural members

8 6. Mechanism of Seismic Isolation Device Seismic Isolation Device e.g. laminated rubber type Seismic Force Isolator (Laminated rubber) Fixed by a shear pin At normal time The shear pin ruptures At the time of earthquake (Isolation device activated)

9 Restoration Response Period Emergency Response Period Initial Response System 7. Disaster Response Manual In order to promptly restore and maintain the function of terminals in the event of a largescale disaster, basic principles for action, emergency system, etc. are stipulated clearly in the manual so that employees can rapidly establish a system for initial response and take necessary emergency measures in an appropriate and rapid manner. Occurrenc e ~ 1 hour Oi #4, 5 & 6 Establishment of working group structure Securing transportation means Collection of information, etc. Other Berths Collection of information Oi Container Terminal Berths #4, 5 & 6 1 hour 24 hours Starting investigation after securing transportation means, etc. Response for restoration Securing transportation means, etc. 72 hours and after Securing cargo handling system through coordination with relevant organizations Check of emergency restoration status Starting investigation Cooperating with the Metropolitan Government as much as possible in terms of emergency restoration Mooring adjustment

10 II. Promotion of Preventive Maintenance Management

11 1. Shift to Preventive Maintenance Management Oi Container Terminal Redevelopment Project ( ) Old pier New pier Before repair Example of repair After repair

12 Performance 2. Concept of Preventive Maintenance Management Objective of Preventive Maintenance Management To make sure to grasp deterioration of structures while the damage is still small, and conduct small repairs at an early stage. To prevent large-scale/emergency repair which can cause restrictions of terminal usage. Small repair Small repair Largescale repair Small repair Necessary level of performance [Effect of Preventive Maintenance Management of Terminal Facilities] Lapse of time Planned implementation of proper maintenance and management Provision of safe facilities Reduction and leveling of maintenance and renewal costs

13 3. Implementation System of Preventive Maintenance Management Inspection Systematically Implement daily inspection, detailed inspection by specialized technicians, etc. through collaboration with users Evaluation Evaluate the conditions of the facilities, compare the life cycle costs, and select measures Costs Inspection costs Construction costs Extra costs for large-scale repair Re-construction costs Inspection costs Repair costs Repair costs Time(years) Repair Perform repair based on maintenance and management plan Maintenance Management Plan Establish a long-term repair plan and an implementation plan [Maintenance and management support tool incorporating preventive maintenance] (1) Maintenance and management manual To continuously keep a certain level of preventive maintenance management (2) Terminal management system To inherit and share inspection results and repair history