Research on high-speed railway electrical personnel working on the track and labor safety risk points

Research on high-speed railway electrical personnel’s on-track operations and labor safety risk points

In the 240-minute skylight time of Haxi East Station, Shuangcheng North and the 240-minute skylight time of Haxi EMU , often encounter cooperation with units such as public works, power supply, communications, real estate, etc. Due to the snowy seasonal characteristics of winter in Northeast China, the on-track operation is to improve the ability to deal with wind and snow weather and ensure safe train operation and smooth transportation organization.

Abstract: This article mainly takes the Harbin-Dalian High-speed Railway as the premise, analyzes the classification and time of electrical personnel’s work on the road, and aims at the labor safety that exists during the construction and maintenance of high-speed railways. Risks were analyzed in terms of the work process and the equipment of protective equipment, and safety risk points were judged. Targeted safety prevention and control measures were proposed for tendencies existing in the work process, aiming to strengthen labor safety risk management and ensure Personal safety risks are orderly and controllable.

Keywords: High-speed railway; electrical personnel working on the track; labor safety

High-speed railway refers to newly constructed EMU trains with speeds of 250km/h and above. The initial operating speed is not Passenger dedicated railway with speed less than 200km/h. The Harbin-Dalian High-speed Railway is China's high-speed railway with the highest design and construction standards in the northernmost cold region. The Harbin-Dalian High-speed Railway was officially opened for operation on December 1, 2012. It is a double-track electrified railway with a total length of 921 kilometers. Compared with the Ha-Qi Passenger Line and the Mu-Sui Passenger Line, the Harbin-Dalian High-speed Railway is a mature line and is the foundation and technical guarantee for the subsequent opening of the two passenger lines.

1 Basic situation of high-speed railway electrical personnel working on the track

1.1 Temporary skylights applied for temporary production tasks

Prerequisites for on-track operations without affecting traffic Next, if there are temporary production tasks, such as testing for defective track circuit shunts, adjustment of switches, etc., they should be carried out in accordance with relevant regulations and document requirements. When maintenance operations need to be temporarily increased due to special reasons, they should not be caused by other construction and maintenance operations. If there is a conflict, the equipment management unit shall report it to the competent business department for review and approval, and then report it to the railway bureau dispatching office, where the deputy director in charge of high-speed rail duty will organize and implement it according to the contents of the countersigned plan.

　1.2 Turnout snow removal skylights

Due to the seasonal characteristics of snowy winter in Northeast China, the operation on the track is to improve the ability to deal with wind and snow weather and ensure safe train operation and smooth transportation organization. The dispatch office takes the lead and arranges all units and departments to uniformly remove snow on the road according to the operation chart plan, that is, using the driving gap to give a fixed time period of snow removal window. The snow removal window will change accordingly according to the changes in the map adjustment situation.

1.3 Comprehensive maintenance and construction skylights

When various professional systems use road engineering trains to carry out construction (maintenance) operations or transport personnel and road materials, in principle, the professional systems Fixed dates, every 2nd, 5th and 8th are the operation dates of the electrical system. The skylight time for the construction of section pipes in the Harbin West EMU will be determined by the depot based on the actual movement requirements of the EMU entry and exit times and maintenance operations specified in the train operation chart. After consultation and agreement with the equipment management unit, the skylight time will be announced to the relevant units. , the skylight time shall in principle be no less than 180 minutes.

1.4 Cooperate with maintenance and construction

During the comprehensive maintenance and construction of skylights, there are often construction and maintenance operations with other units and departments. Cooperation operations must be coordinated with The main tasks should be separated and given equal attention. During the 240-minute skylights at Haxi East Field, Shuangcheng North and the 240-minute skylights at Haxi EMU, we often encounter cooperation with units such as public works, power supply, communications, and real estate. 1.5 After equipment failure, troubleshooting and on-track operations shall be carried out in accordance with Article 46 of Harbin Railway Administration Document No. 37 [2013] of the "Harbin Railway Bureau High-speed Railway Business Line Construction Safety Management Implementation Rules". When driving safety is endangered and immediate repairs are required, equipment management The unit takes measures in accordance with regulations, registers in the "Training Equipment Inspection Register", and with the approval of the deputy director of the high-speed rail duty at the dispatching station, issues a dispatching order to carry out emergency repairs. The equipment management unit also notifies the cooperating unit and the responsible business office of the Railway Bureau.

2 Research and Judgment of High-speed Railway Labor Safety Risks

2.1 There are management loopholes in the formulation of rules and regulations

During the trial operation of the Harbin-Dalian High-speed Railway, the high-speed railway labor safety regulations introduced by our section In the safety rules and regulations, there is no clear provision that on-site protection personnel must be installed for on-track operations. During the document discussion, the professional competent authorities believed that daily inspection and maintenance operations of high-speed railways are all carried out in the skylight, and there are no trains running, so there is no need to set up on-site protection personnel. At the same time, it can enhance the strength of workers and solve the problem of personnel tension. Under this mindset, potential management risks are formed.

2.2 Insufficient contact between the station and the station liaison officer

As the Harbin-Dalian High-speed Railway matures and the Haqi and Mu-Sui passenger trains are steadily introduced, there is some blind optimism. Emotions exist, and there are paralyzing thoughts during the construction and skylight repair process. It is believed that there are no trains running in the skylight point of the high-speed rail. The station and station liaison officers have lowered the requirements for safety protection, lowered the contact standards, and are not very vigilant about safety protection. The basic 3-5 minute contact system is not strictly implemented.

2.3 The skylight operation plan is not submitted in detail

The submitted skylight plan does not include detailed construction locations, a wide range of operation projects, and the scope of impact is the entire throat. It is often too many plans but not practical There is little work, and there is a tendency to work haphazardly after getting started. The skylight plan submission is unscientific, not rigorous, and unrealistic. The skylight planning report must be large and comprehensive to prevent problems with operations beyond the scope. This will result in the on-site liaison officer not being able to fully grasp the content and location of outdoor operations, and personal safety protection will be in a state of incomplete control. Once power supply occurs during the operation In emergencies such as parallel operations of public works rail cars and other emergencies, personal safety and effective protection cannot be carried out immediately.

2.4 There are blind spots between the station liaison officer and the station liaison officer, and indoor and outdoor communication

2.4.1 The handheld terminal of the on-site station liaison officer is sometimes placed unconsciously. Where the signal is not available, in some cases, the scheduling of all temporary construction or skylight repair time changes, and when a fault occurs, the on-site station liaison officer cannot be contacted in time, resulting in delays in construction and skylight repair, and the fault cannot be notified to the site in time. Wait for a dangerous situation to occur.

2.4.2 The distance between each station of the high-speed railway is long, and the communication distance of the intercom radio is limited during construction and skylight operations. Effective and accurate communication cannot be carried out. Indoor and outdoor communication is due to the communication signal of the indoor intercom radio. Affected by the shielding, the communication quality is seriously interfered with, and indoor and outdoor communication voices cannot be heard clearly, which directly threatens driving and personal safety.

3 Improvement measures and suggestions

3.1 Further refine and improve the management methods of related operations. Ensure that electrical personnel working on high-speed railways conscientiously organize work on the track, work on the track and off the track in accordance with the requirements of dispatching orders, and can only leave after the person in charge of the operation has verified the number of people, tools and materials. Respond as quickly as possible after a malfunction occurs, or coordinate to overcome the problem of access difficulties at Shuangcheng North Station.

3.2 Make arrangements for comprehensive maintenance and personnel arrangements before construction of skylights, and designate a dedicated person to be responsible for cooperating with construction and maintenance. In order to prevent the station (station) liaison officer from not knowing the progress of the cooperation construction and blindly signing on the cooperation construction, after the cooperation work is completed, he should contact the station liaison officer in time to inform him of the cooperation construction, maintenance progress and completion status.

3.3 Submit the construction (skylight) plan scientifically and rationally, and submit the plan according to the work to be done on that day, to avoid the phenomenon of being too comprehensive. In particular, we must carefully organize and hold pre-operation safety prediction and risk warning meetings, and record them for future reference. We must ensure that operators, station liaison officers, and on-site protection personnel clearly understand the operation tasks, operation groups, and operation locations.

3.4 During the construction operation, the resident station, liaison officer, on-site protector and construction operation leader must implement the 3 to 5-minute safety call system as required. When there are many on-site operation units, the resident station should be appropriately increased. station liaison or add an intermediate liaison on site to keep communications open. When communications are interrupted during operations, on-site protectors and construction operations leaders must take emergency measures to immediately organize construction workers to stop operations and avoid vehicles in safe locations.

Conclusion The rules and regulations of high-speed railways are becoming increasingly mature and perfect. Strengthening high-speed railway labor safety risk management must be normalized and effectively improving the labor safety risk awareness of all employees is the main topic at the moment. It is also an eternal topic that we cannot change or relax. Only when the concepts of rules, regulations and standardized operations are rooted in our hearts can high-speed railway operations be safe and smooth.

References

[1] China Railway Corporation High-speed Railway Technical Management Regulations.

[2] Railway Business Line Construction Safety Management Measures. Railway Transportation [ 2012] No. 280.

[3] Harbin Railway Bureau High-speed Railway Operation Organizational Rules.

[4] Harbin Railway Bureau Railway Business Line Construction Safety Management Implementation Rules. [5] Harbin Railway Bureau High-speed Railway Labor Safety Management Measures. ;