Seoul subway line 2 collision
1) Introduction “The accident occurred on Line 2 of the subway at Sangwangsimni station in Seoul at about 3.30 p.m. on 2 May 2014. No. 2260 train ran into back of the preceding No. 2258 train, which had stopped between stations due to a mechanical problem. As a result, 235 people were slightly injured, 3 people were serious injured and about 1,000 commuters were evacuated. Also, it makes property damage 2.8 billion won.” Fortunately, it was not terrible disasters, but this accident remind us that 10 million people taking a subway in Seoul are always exposed to danger of accident. Especially, it happened when I arrived at the Seoul station on my last birthday. So, I remembered vividly this accident. When I researched …show more content…
The No. 433, 435 stop signals which were installed before entering to platform are malfunctioned. So, two stop signals send the wrong signals. Originally, the stop signals signed ‘Warning (433) • Stop (435) • Stop (437)’ in regular sequence, but they signed ‘Go (433) • Go (435) • Stop (437)’ on accident day. As a result, ATS (Automatic Train Stop system) didn’t work, and engineer put on the quick brakes immediately, after watching the stop sign of normal No. 437 stop signal. However, train eventually collided due to short braking distance. In fact, the major cause of subway collision was not because mechanical defects problems. It can be actionable. After this disaster, metro started to check railroad switches, signal stop, and electric installation for an hour before first train run every day in 17 stations which has sharp curve sections. The reason is that 2 signals can’t be seen consecutively in 17 …show more content…
The company of Metro decided to change the old subway train as a solution of this disaster. They made an excuse for this accident by old subway train. The technology limitation by deterioration is one of the many causes. Even though it’s also one of the important part, neglecting error signal stop, not reporting departure delay, and careless monitoring of control center are more influence to this disaster than that. In other words, social system are more affected to this disaster than technical
1) Introduction “The accident occurred on Line 2 of the subway at Sangwangsimni station in Seoul at about 3.30 p.m. on 2 May 2014. No. 2260 train ran into back of the preceding No. 2258 train, which had stopped between stations due to a mechanical problem. As a result, 235 people were slightly injured, 3 people were serious injured and about 1,000 commuters were evacuated. Also, it makes property damage 2.8 billion won.” Fortunately, it was not terrible disasters, but this accident remind us that 10 million people taking a subway in Seoul are always exposed to danger of accident. Especially, it happened when I arrived at the Seoul station on my last birthday. So, I remembered vividly this accident. When I researched …show more content…
The No. 433, 435 stop signals which were installed before entering to platform are malfunctioned. So, two stop signals send the wrong signals. Originally, the stop signals signed ‘Warning (433) • Stop (435) • Stop (437)’ in regular sequence, but they signed ‘Go (433) • Go (435) • Stop (437)’ on accident day. As a result, ATS (Automatic Train Stop system) didn’t work, and engineer put on the quick brakes immediately, after watching the stop sign of normal No. 437 stop signal. However, train eventually collided due to short braking distance. In fact, the major cause of subway collision was not because mechanical defects problems. It can be actionable. After this disaster, metro started to check railroad switches, signal stop, and electric installation for an hour before first train run every day in 17 stations which has sharp curve sections. The reason is that 2 signals can’t be seen consecutively in 17 …show more content…
The company of Metro decided to change the old subway train as a solution of this disaster. They made an excuse for this accident by old subway train. The technology limitation by deterioration is one of the many causes. Even though it’s also one of the important part, neglecting error signal stop, not reporting departure delay, and careless monitoring of control center are more influence to this disaster than that. In other words, social system are more affected to this disaster than technical