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The author:(作者)aaapublished in(发表于) 2014/9/8 11:39:23 Beijing 39 breakdowns have occurred this year， on average at least once a week
A few days ago, Subway Line 5 songjiazhuang station for trains to fail, resulting in some of its stations to take limited measures, until more than half an hour after the station's only gradually returned to normal. According to Metro data exposed, Beijing Youth daily reporter statistics found that subway lines in Beijing so far this year there have been 39 cases of various types of failures. On average at least once a week with the failure, Metro officials said passenger traffic leads to increased vehicle and equipment losses, failures will increase in frequency and the MTR design standards, equipment reliability and stability will lead to failure of Metro at run time, these factors are not operating companies can control.
So far this year occurred 39 times
On August 27, during the morning rush hour Subway Line 4 line and batong line fail, resulting in large numbers of people being late for work. Beijing MTR and MTR Corporation to webcast "emergency information" informed of the contingency occurred, North of green newspaper reporter found this "emergency information" total 46 times, in addition to the 6 people from falling onto the platform and a construction, a total of 39 times, works out to an average of at least once a week breakdown.
This failure rate is not much? International Association of Metro at least twice a day for 5 minutes delay between average VKT Vehicle Kilometers of Travel as one of the indicators of safety and reliability. In other words, for whatever reason, "5 minutes" until the next time the "5 minute" trains continued running miles more is better.
2013 the Corporation implements two 5-minute delays traffic between more than 2.75 million vehicle-kilometres since 2014 Beijing Subway company twice for more than 5 minutes delay between traffic to 4.266 million kilometers. The indicators at the international level to stay ahead in the subway of 31 members of the Association. But because of Beijing's subway passenger volume is large, even if less than 5 minutes at a time "delay" will also have implications for many passengers, the number of Metro family feeling is "why Metro is always down? ”
Main source signaling system to fail
39 breakdowns that occur in the subways this year, 18 times the result of cab signal fault of signal malfunctions or train, locomotive 6 times.
Beijing Subway operation company said Gu Qingyi, Minister of equipment, fault mainly Metro power supply equipment, network equipment, mechanical and electrical equipment, communications and other causes for signal equipment. According to Gu Qingyi introduction, the line is the most basic of equipment, mainly affecting the running rail and turnouts, affecting trains turn recently, this type of problem is relatively small. Power supply fault rate of the equipment also declined significantly compared with last year, in 2012 from 5.3 per cent in 2013 under parts per million vehicle kilometers of 3.2 parts per million vehicle km, 2014 failure rate dropped again in the first half to 2 parts per million vehicle kilometers.
Signalling system failures still occur frequently, however, is the main cause of train failure. Gu Qingyi said that currently Line 10 subway line signal failure more frequent, mainly due to the Line 10 Metro line construction cycle short, after several subway through formed a huge system operating pressures. Line 10, line signalling system supplied by Siemens and its core technology is not mastered by the Corporation, causing maintenance more difficult. At present, have discovered signalling problems 47, there remain two or three outstanding observation solution.
At present, the Beijing Subway passenger volume continues to grow, business days average daily passenger traffic of 8.49 million passengers. Based on operational experience, if a FootFall of over 7 million passengers a day, Metro will be very smooth and orderly, the current daily traffic exceeds this level.
Gu Qingyi said, passengers are determinants of failure. Passenger traffic increased vehicle use frequency increases, increased vehicle wear and loss, failures will increase in frequency.
Source range led to maintenance of equipment
In addition to the impact of large passenger flow, there is more reason to be operating companies cannot afford. According to Gu Qingyi introduced, according to statistics published in 2013, under the jurisdiction of Beijing Metro 14 lines a total of 140,000 units (sets) equipment, equivalent to 14 lines each have 10,000 units (sets) equipment, and this statistic is just check screen doors, lifts, vending machine easier, such as the list of facilities, these facilities come from multiple manufacturers. At present, 14 lines of trains coming from the North, the South, Beijing, three car manufacturers, and devices on the trains is derived from a number of manufacturers, even if it is the same route in different periods of equipment from different manufacturers. "The equipment of different manufacturers require different maintenance procedures, requires a lot of maintenance personnel standards, coordinated communication is more difficult. "Gu Qingyi said.
Only Metro signal system as an example, Line 10 subway signal system supplied by Siemens, line, Line 1 Line 2 line, Fangshan line provided by Casco signal Ltd., line Line 5 and line batong line, Line 13 provided by Westinghouse, Line 15 line provided by Nissin, yizhuang line provided by the holding company. Standard equipment of different manufacturers, maintenance procedures are different, some manufacturers do not provide equipment maintenance or core technologies, resulting in failure-prone, or is difficult to treat.
How frequently the subway maintenance? In addition to daily, monthly inspection and routine checks, regular vehicle monthly maintenance repair and overhaul, aircraft grade system. For a regular subway maintenance man who, in addition to inspecting their vehicles, maintenance vehicles for colleagues need to review, the superior person in charge maintenance man maintenance vehicles may also be checked. Every night, after the last trains stopped running, and subway maintenance personnel's work has only just begun, subway maintenance without affecting the operation of the selected time period.
Gu Qingyi said subway design standards, equipment reliability and stability, different manufacturers of equipment life cycle, the diversification of equipment maintenance programs will lead to failure of Metro at run time, these factors are about branches of subway operation. (Reporter Liu 珜)
This year Metro
"Emergency information" statistics
Signal failure 18 train failure fall platform 6 times 6 times 5 door 4 door fault device fault 2 junior 1 times-escalator malfunction 1 flare-up 1 unexpected power failure 1. Source: Beijing Youth daily
(Original title: 39 breakdowns have occurred this year in Beijing subway at least once per week)
09:17 on September 08, 2014Xinhua NET
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