What are the types of line patrol inspections?

Hello: It is divided into the following types, normal patrols. The line inspectors carry out inspections of the lines according to a certain period, including the inspections of the line equipment (referring to the line body and ancillary equipment) and the line protection area (line passage).

Fault patrol. The line inspection organized by the operating unit to find out the line fault point, the cause of the fault and the fault situation. Special patrols.

In special circumstances or as needed, the line patrol is carried out by using special patrol methods. Special inspections include night patrols, cross patrols, pole mount inspections, anti-vandalism inspections, and aerial inspections (or the use of aircraft). Haystacks, timber piles, garbage heaps, and fallen branches and antennas in the protection zone.

Identification of ongoing works and various anomalies along the line.

Such as: shooting at line facilities and throwing objects; Planting trees and bamboos, digging ditches, blasting earth, laying underground pipelines or cables, building roads, wharves, unloading yards and shooting ranges, etc., as well as various abnormal phenomena such as river flooding, reservoir overflow, flash floods, drift ice, flooding of poles and towers, and movable facilities under the lines. Climbing towers or erecting power lines, communication lines, broadcasting lines, and installing broadcast horns on towers; Unauthorized use of electrical equipment on the road conductor.

**Trees or other facilities near the road that endanger the safety of the line and when the wind deflects the line conductor and swings, causing discharge. Whether it is in the area of about 300m near the road, construction blasting, quarrying, and kite flying. In addition, damage to roads, bridges and temporary bridges used for inspection and maintenance should also be observed.

When inspecting the line in an accident, in addition to paying attention to the line itself and its components, you should also pay attention to the nearby environment. For example, trees, buildings and other temporary obstacles may touch the line and cause accidents; Under the tower, there are wooden sticks with no heads, burned birds and beasts, and damaged insulators; You should also ask the residents along the line what you see when you see the fault.

When fault-related and suspicious objects are found. All should be collected and the situation around the fault point should be recorded so that it can be used as a basis for analyzing the accident.

[Legal basis].In accordance with the Electricity Act

Article 4 Electric power facilities shall be protected by the State。 It is forbidden for any unit or individual to endanger the safety of power facilities or illegally occupy or use electric energy.

Article 5 The construction, production, and use of electric power shall protect the environment in accordance with law, adopt new technologies, reduce the discharge of harmful substances, and prevent and control pollution and other public hazards。 The State encourages and supports the use of renewable energy and clean energy for power generation.

Article 6 The electric power management department shall be responsible for the supervision and management of the national electric power undertakings. The relevant departments shall be responsible for the supervision and management of electric power undertakings within the scope of their respective duties. The local people's economic comprehensive department at or above the county level is the electric power management department within its administrative area, which is responsible for the supervision and management of electric power undertakings.

The relevant departments of the local people's government at or above the county level shall be responsible for the supervision and management of electric power undertakings within the scope of their respective duties.

Answer: Line patrol inspection is divided into:

1) Regular inspection, the purpose of which is to constantly grasp the operation of each component of the line and the situation along the line, and timely find equipment defects or threats to the safe operation of the line.

2) Special inspection, in the case of drastic climate changes, natural disasters, external forces, abnormal operation and other special circumstances, timely detection of abnormal phenomena of the line and deformation and damage of components.

3) Night, cross and diagnostic inspections: key inspections are carried out according to the characteristics of the operating season, the health of the line and the environmental characteristics.

4) Fault inspection, find the fault point of the line, find out the cause of the fault and the fault situation.

5) Supervision and inspection: the leading cadres and technical personnel of the work area (institute) and above units understand the operation of the line, and inspect and guide the work of the line patrol personnel.

Daily inspection content: 1. Observe the ammeter of the cable line to see whether the actual current exceeds the rated ampacity of the cable line. 2. Whether the connection point of the cable terminal is overheated and discolored.

3. Whether there is oil seepage and oil leakage in oil-impregnated paper insulated power cables and terminal heads. 4. The cable used in parallel does not overheat a cable due to uneven load distribution. 5. Whether there is ignition, discharge sound and abnormal smell.

6. Whether there is any abnormality in the terminal grounding wire.

Regular inspection cycle: 1. Inspect the cables laid in the soil, tunnels and along bridges, the cable trenches of power plants and substations, the cable wells and cable sections of cable wells, etc., at least once every three months. 2. The cable laid in the shaft should be laid at least once every six months.

3. The cable terminal head shall be inspected for power outage every 1-3 years according to the on-site operation conditions; The outdoor terminal head is inspected once a month, and the power outage cleaning inspection is carried out in February and November every year. 4. Strengthen inspections of excavated and exposed cables as appropriate.

Regular inspection content: 1. Directly buried cable line. 2. Cable lines laid in trenches, tunnels and concrete pipes. 3. Outdoor cable termination.

The purpose of regular inspection of overhead transmission lines is to grasp the operation of the line and find the defects of the line in time, so as to quickly carry out maintenance and ensure the safe operation of the line.

Transmission line inspection is to observe, inspect and measure the components of the transmission line with the eyes or with binoculars and other tools and instruments. The purpose is to grasp the operation status of the line grandson, and timely find equipment defects and problems that threaten the safety of the line.

Because the overhead line is widely distributed, and long-term operation in the open air, so it is often affected by the surrounding environment and natural changes, because the distribution line equipment type is more complex than the transmission line, in addition to the transmission line inspection inspection, special equipment should also be inspected.

The regular inspection of the line should generally check the following items:

1. Whether there are activities such as excavation, soil piling, building houses, crane loading and unloading, blasting, shooting and other activities in the protection area.

2. Whether flammable, explosive, acid and alkali items are stored in the protection area.

3. Whether trees and bamboos are planted in the protection area, and whether the distance between trees and bamboos and wires meets the requirements of the regulations.

4. Whether there are newly laid power lines, communication lines, overhead cableways, pipelines and cables in the protection area, and whether the intersection angle, vertical distance and parallel distance between these lines and pipeline facilities and the line meet the requirements of the regulations.

5. Whether roads, railways, docks, unloading yards, storage stacks, shooting ranges, etc. are built near the line.

6. Whether there are tall mechanical facilities and other movable facilities near the line.

7. The situation of pollution sources near the line.

8. Whether the roads and bridges that must be passed for inspection and maintenance are damaged.

9. Whether there is flooding in the river near the line, whether there is a flash flood in the mountainous area, and whether the tower is flooded or washed away.

10. Contact relevant units (individuals) to prune branches close to the wire, and remove TV antennas and other protruding obstacles that threaten the safe operation of the line.

7. The main content of the inspection.

1.Overhead lines.

Check the situation along the line.

Whether there are new buildings in the protection area and their safety distance from the line, and whether there are flammable, flammable, explosive materials and corrosive gases.

Whether there are trees or bamboos planted in the protection area and the distance to the line.

Whether there are earthwork excavations, construction works and blasting works in the protection area.

Whether there are erected or laid overhead power lines, overhead communication lines, overhead pipelines, and various pipelines and cables in the protection area meet the safety requirements of this line.

Whether roads, railways, reservoirs, fish ponds, wharves, unloading yards, quarries, shooting ranges, etc. built near the line threaten the safe operation of the line.

Whether there are tall construction machinery and movable equipment near the line.

Changes in the pollution sources near the line, and whether they threaten the safe operation of the line.

Whether the auxiliary facilities of the line are damaged or stolen.

Other abnormal phenomena, such as river flooding, flooding, forest trees**, etc.

Tower and cable inspection.

The tilt of the tower, the skew of the cross arm and the corrosion and deformation of each component.

The fixing of each part of the tower, such as: whether the tower material, foot pegs, bolts or nuts are missing, whether the bolts are loose, and whether the welds or fire bends are cracked.

Whether the wire and its parts are corroded, relaxed, and broken, whether the tension distribution is uniform, whether there is a lack of nuts, and whether the intersection of the wire touches, etc.

Whether the connection between the tower body and the foundation is good.

Whether the soil around the foundation is protruding or subsidence, whether the foundation is cracked or damaged, whether the foundation is sinking or uplifting, whether the foundation is sinking or being washed by water, etc.

Whether the weeds around the tower are too high, whether they can meet the maximum wind deviation requirements, and whether there are no bird nests or foreign objects on the tower that endanger the safe operation.

Whether the flood control facility has collapsed or been damaged.

Grounding device check.

Whether the connection between the ground wire, the grounding wire, and the grounding network is reliable.

Whether the grounding lead wire is seriously corroded or lost, and whether the buried part is exposed.

Inspection of accessories and other parts.

Whether the shockproof hammer is displaced, deflected, and whether the steel wire is broken.

Whether the spacer rod is loose, out of position and sheared, whether the connection is worn or whether there is discharge burn.

Detection devices are not lost or damaged.

Whether the name of the line, the tower number, the warning sign, the phase sequence sign and the protection sign are in good condition.

2.Cable routes.

Whether the cable bracket is loose, corroded, damaged or damaged, and whether the slot box cover has fallen off.

Whether the cables are arranged in parallel and neatly, and whether there are piles of sundries, pipes and building materials on the bridge.

Whether the middle end of the cable is kept clean and free of overheating.

Whether the warning signs on the cable tray and line are complete, whether they have fallen off, and whether the handwriting is eye-catching.

Whether the safety protection distance across the cable tray construction meets the requirements (safety distance meters).

Whether the construction workers are stepping on or stepping on the live running cable.

Ask about the exam in the training center, Secretary Xu or Lao Ding may know!

Natural Gas Patrol Officer's Job Description:

1. Wear work clothes and enter the job on time.

2. Be familiar with all medium and low pressure pipeline layout diagrams, and confirm the accurate orientation of each pipeline.

3. Prepare the valve well iron hook, wrench, combustible gas detector, soap pot, and pressure regulator key.

4. Carry a temporary record book and a "Inspection Record Form".

5. Maintain valve wells, pipelines, pressure regulating boxes and other equipment.

6. Check whether the pipeline is in good condition according to the inspection plan and inspection cycle, and whether there is any exposed pipe. Check whether the sign piles and warning signs along the line are complete and complete, and check whether there are other units slotting around the pipeline. Check the auxiliary facilities and equipment for theft and damage.

7. Regularly maintain and maintain the valve well. Check whether the valve well cover and well plate are in good condition, and whether the valve well and its surroundings have collapsed. Check whether the connection between the valve body and the flange is leaking, and whether there are debris and water seepage in the valve well.

8. In case of construction digging injury, order to stop work and quickly report to the leader for treatment. Report in time when encountering mass insurance, and go to the scene to maintain order. If someone is found to be working on the pipeline, it is necessary to stick to it closely and monitor it 24 hours a day to ensure the safety of the pipeline.

1. Directly buried cable: whether the line stake is intact, whether slag, building materials, rubble, garbage and other heavy objects are stacked on the ground along the line, whether there are temporary buildings, whether the ground near the line is excavated, whether there are corrosive emissions such as acid and alkali near the line, whether limestone and other corrosive substances are stacked on the ground, whether the cable exposed to the ground is protected by pipes, the protective pipe is damaged or corroded, whether it is fixed, whether the cable is tightly plugged into the room, during the flood or after the rainstorm, Inspect the vicinity for serious erosion or collapse.

2. Reach the cable line: whether the cover plate of the ditch is intact, whether the ditch is water seepage, whether there is water in the ditch, whether there are flammable and explosive materials stacked in the ditch, whether the cable armor or lead package is corroded, whether the all-plastic cable has been bitten by rats, during the flood or after the rainstorm, inspect whether the indoor ditch is flooded, whether the outdoor ditch flood is unblocked, etc.

3. Cable terminal and intermediate joint: whether the casing of the terminal head has cracks, dirt and flashover traces, whether there is oil leakage in the oil-filled cable head, whether the terminal connection is good, whether there are signs of overheating, whether the grounding wire is intact and loose, whether the intermediate joint is deformed and whether the temperature is too high.

4. Exposed cable: whether the hook or bracket along the line is firm, whether the cable sheath is corroded or damaged, and whether there are flammable, explosive or strongly corrosive substances stacked near the line.

That's all I know, and if it's not complete, you can ask for it online.

Check the appearance of the insulation and the temperature rise of the cable.

1) The line patrol work should be carried out by personnel with work experience in power lines. Individual line patrol personnel should pass the examination and be approved by the production leader in charge of the work area (company, institute). Cable tunnels, remote mountainous areas and night patrol lines should be carried out by two people.

In case of inclement weather such as summer and heavy snow, if necessary, two people will be conducted. When patrolling the line alone, it is forbidden to climb the poles and towers.

2) Patrol line during thunderstorms, windy weather or accidents, inspectors should wear insulated shoes or insulated boots; In summer, mountain patrol lines should be equipped with necessary protective tools and medicines; Sufficient lighting tools should be carried for night patrols.

3) The night patrol line should be carried out along the outside of the line; The gale patrol line should move forward along the upwind side of the line, so as not to touch the broken wire; Special inspections should pay attention to the selection of routes to prevent floods, landslides, bad weather and other harm to people.

Accident patrol line should always be considered live line. Even if you know that the power of the line has been cut off, it should be assumed that the power transmission of the line may be restored at any time.

4) If the line patrol personnel find that the wire or cable is broken to the ground or suspended in the air, they should try to prevent pedestrians from approaching the disconnection site within 8m, so as not to hurt people by stepping voltage, and quickly report to the dispatcher and superiors and wait for treatment.

5) The personnel who carry out the inspection of power distribution equipment should be familiar with the internal structure and wiring of the equipment. When inspecting power distribution equipment, do not go over fences or fences. When entering and exiting the power distribution equipment room (box), the door should be closed casually, and it should be locked after the inspection.

When a single person is inspecting, it is forbidden to open the door and lid of the power distribution equipment cabinet.