1. One of the following situations in signal engineering construction is the main hazard source and risk factor:
(1) No construction safety agreement was signed with the equipment management unit or traffic organization unit. The types and uses of existing signal equipment have not been investigated.
(2) The construction, construction transition and opening plan are unreasonable or not implemented according to the approved plan, and no emergency plan has been formulated.
(3) The underground facilities were not investigated or the corresponding protective measures were not taken before digging trenches and pits, resulting in the optical cable being cut off.
(4) Bad insulation of signal cable and wrong wiring of equipment.
(5) When erecting or dismantling the high-column signal column, the key points were not registered and the protection was not set according to the regulations.
(6) The signal that has not been opened shall not be invalid or light-leaking.
(7) Place tools and materials to invade or short-circuit the track circuit.
(8) Unregistered points when installing and replacing rail insulation on the business line; When it is necessary to disconnect the track traction circuit when replacing the track equipment in the electric traction section, the principle of first connecting and then disconnecting is not implemented.
(9) The switch adjustment is not tight. During the construction of abnormal driving, the switch machine of public works nail turnout did not pull the handle, disconnect the safety contact and cut off the starting power supply.
(10) The existing equipment has not been reliably protected in the process of business line construction.
(1 1) Borrow the existing signal cable and power supply for construction.
(12) During the transitional construction, the connection between the new equipment and the existing equipment was not checked to determine whether the physical object was consistent with the drawings.
(13) Use sealing wires or other means to seal the electrical contacts of various signal equipment in use.
(14) Systems such as signal interlocking, train control and centralized train dispatching command/dispatching are untested or incomplete.
(15) No fire prevention measures were taken in the construction of the computer room.
(16) Business line construction, equipment management unit's guardianship personnel are not in place, and construction is carried out without authorization.
(17) The newly opened line may lead to the failure to register the track sections with poor shunting.
(18) During the construction on the business line, the train and personal safety protection were not set as required.
(19) Before the equipment was opened, the signal equipment change data was not released to the public as required.
(20) Do not wear safety helmet and safety belt when working high above the ground.
2. Concealed works, such as cable excavation, laying, underground connection, interlocking transformation and transitional opening, which affect the safety of traffic and existing equipment in the process of station transformation, are major hazards, and special construction schemes should be formulated and approved or put on record according to regulations. For the construction involving major hazards, the full-time safety management personnel of the construction unit shall give on-site guidance, the supervision unit shall supervise on the spot, and the equipment management unit shall supervise on the spot.
3. The registration, cancellation procedures and safety protection during the construction of business lines shall be implemented in accordance with the relevant provisions of the Measures for the Administration of Construction Safety of Railway Business Lines (Tieban [2008]190). Personnel and equipment shall go through the registration formalities according to relevant regulations before entering the computer room.
4. During signal construction, materials and tools shall not be placed at turnouts, rails and other places that hinder traffic safety, in case of short circuit of track circuit caused by materials and tools.
5. The installation of signal equipment shall not invade the railway building clearance.
6. When dismantling, installing, replacing, testing and moving business line signal equipment, the provisions of "three immobility and three separation" should be strictly implemented.
7. When the traffic is affected by the transportation of signal equipment in the business line, it must be carried out.
8. Before using cranes and other large machinery for handling and hoisting, it should be confirmed that the machinery and equipment are in normal condition and meet the use requirements. The radius of handling and hoisting operation shall not invade the railway building clearance. When using manpower for handling and other operations, sufficient manpower must be provided.
9. Before the signal engineering construction of business line, the construction unit shall inspect the equipment together with the design and equipment management unit, and * * * confirm the accurate position of underground pipelines and existing cables, and determine the protection measures and scope. Construction units and equipment management units should strengthen supervision.
10. For the new equipment and materials used in signal construction, the construction unit shall organize the design unit, new equipment and new material suppliers to train the construction unit and supervision unit on construction technology and methods, and make technical disclosure on construction safety, so as to conduct safety supervision and guidance on sample construction.
1 1. Special drilling equipment must be used for track drilling. The power supply of drilling equipment shall be generator power supply, and cables and power supply of existing signal equipment shall not be borrowed. The generator should be placed 2 meters away from the line. When the power cord passes through the rail, it should pass through the bottom of the rail. If the operation is stopped in the middle, a special person should be appointed to guard or resume immediately.
12. When drilling on concrete members such as track slab, ballast slab, protective wall and tunnel wall of ballastless track, it shall be carried out with the consent of relevant units. Before drilling, the reinforcement shall be tested, and the drilling depth shall not be greater than the specified value.
13. When new signal equipment needs to be connected to the existing power board, the design unit shall verify the capacity of the power board together with the equipment management unit and the construction unit.
14. When erecting poles and signal poles on the business line, the construction shall be carried out at the skylight point, and safety protection shall be set. After erection, it is not allowed to invade the railway building clearance.
15. Design units should take network security and computer system anti-virus protection measures when designing software. Relevant units shall conduct corresponding tests during system debugging, and the signal system in operation shall not be affected during the test.
16. The signal works constructed at night should have good lighting conditions.
17. When the signal specialty intersects with other specialties, it shall be coordinated by the supervision engineer to ensure the construction safety.
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