Line Frost Remediation Operations

What is the operation procedure?

 

1. Preparation:① confirm the work location and workload, the development of implementation measures; ② check whether the track circuit, electrification section. In case of electric service and power supply equipment affecting the operation, issue a notice of work and electricity cooperation; ③ check that the tools and materials are complete, confirm that they are in good condition, and the person in charge of the operation confirms the operating conditions on line.

2. Registration and blocking: ①Register in accordance with the requirements of the station liaison; ②After the person in charge of the operation confirms that the order is correct, notify the site guards to set up signal protection and give the order to start the operation.

3. Measure rail temperature: use the rail thermometer to measure the rail temperature.

4. Frost damage remediation: pad into the line frost damage matting.

5. spring thaw back down: remove the plate pounding, in the line to withdraw the frost damage mat plate.

6. operation back check: operation in charge of the day work place back check operation quality, found unqualified timely rework, statistics completed workload, record back check quality data.

7. Opening the line: ① the person in charge of the operation checks to confirm that the line reaches the opening conditions; ② the person in charge of the operation confirms that there are no personnel, machinery and materials encroaching on the limit; ③ remove the stopping protection signal; ④ the resident liaison officer confirms whether the track circuit is good; ⑤ the resident liaison officer registers the application for opening the line according to the regulations.

 

What are the criteria for job quality acceptance?

 

1.When the freezing height is more than 15mm, it should be rectified and treated.

2. pick open the road bed: ditch depth from the rail sleeper bottom below 50 ~ 100mm, shall not disturb the sleeper bottom road bed.

3. line pad into the frost damage pad, should implement the "general speed speed railway line repair rules" Article 4.13.1 ~ Article 4.13.5 provisions.

4. grubbed road bed should be back-filled flat ramming, road bed top surface should be below the top surface of the rail sleeper 40mm ~ 50mm below, while should not be higher than the top surface of the rail sleeper.

5. In the line to withdraw the frost damage mat, should implement the "general speed railway line repair rules" Article 4.13.6 provisions.

 

What are the requirements for operational safety?

 

1. Strictly implement the requirements of the Safety Rules for General Railway Work and the Safety Protection Management Measures for Operations on Business Lines, and implement effective protection measures.

2. Once the guards' contact is interrupted, the guards immediately organize the workers to go down the road to a safe place to avoid the trains, and only after the contact is restored, confirm that there are no trains before they can work on the road.

3. The operator on the road work or crossing the line, intrusion into the adjacent line limit, must implement "a stop, two look, three through" and "hand than, eye, mouth call" provisions.

4. rake the roadbed to prevent injuries from flying stones.

5. When working in the electrified section, the connection lines of the electrified and signaling devices must be kept properly connected.

6. Wrenches and long-handled tools should have insulating sleeves to prevent the rail from being connected to electricity during operation.

7. It is forbidden to sit on the rails to unload and tighten the bolts.

8. When unloading and tightening bolts, the operator must stand firmly to prevent the spanner from sliding and falling down and injuring people.

9. Strictly implement the system of protection and avoidance of vehicles for on-line operation.

10. Strictly wear and use labour protection equipment in accordance with the regulations.