1. What are the contents of the Q&A site visit? Distribution safety regulations 3.2.3
Answer: On-site investigation should check the scope of power outage required for maintenance (construction) operation, reserved live parts, location for installing grounding wires, adjacent lines, intersections, multiple power sources, self-provided power sources, underground pipeline facilities, the conditions and environment of the operation site and other dangerous points that affect the operation, and put forward targeted safety measures and precautions.
2. Q&A According to the working ticket system, how to work on distribution lines and equipment? Distribution safety regulation 3.3. 1
Answer: Work on distribution lines and equipment should be carried out in the following ways:
1) Fill in the first working ticket for power distribution.
2) Fill in the second distribution working ticket.
3) Fill in the working ticket for distribution live working.
4) Fill in the low-voltage working ticket.
5) Fill in the power distribution fault repair list.
6) Use other written records or follow oral or telephone instructions.
3. What tasks can be performed by using other written records or by verbal or telephone commands? Distribution safety regulations 3.3.7
Answer:
(1) Measure the grounding resistance.
(2) cutting down trees.
(3) Ground inspection and elimination of tower bottom and foundation.
(4) The workplace where the tower number and installation mark are scribbled is below the lowest conductor of the tower, and the safe distance specified in Table 3- 1 can be maintained.
(5) Work without power failure on the household metering device.
(6) Single-power low-voltage feeder power failure.
(7) Power distribution operation and maintenance of high-voltage lines and equipment without power failure or safety measures.
4. How to extend the working ticket when asking questions? Distribution safety regulation 3.3. 10.2
Answer: To go through the formalities of extending the working ticket, the person in charge of the work should apply to the holder of the work permit within the validity period of the working ticket, and apply after obtaining the consent; The second type of distribution work ticket that does not need to go through the licensing procedures shall be applied to the working ticket issuer by the person in charge of the work, and shall be handled after obtaining the consent.
5. What are the safety responsibilities of the person in charge of question and answer work? Distribution safety regulation 3.3. 12.2
Answer:
1) Organize the work correctly.
2) Check whether the safety measures listed in the working ticket are correct and complete, and whether they conform to the actual situation on site, and supplement and improve them when necessary.
3) Before work, disclose the work tasks, safety measures and dangerous points to the members of the working class, and confirm that each member of the working class has signed it.
4) Organize the implementation of the safety measures listed in the working ticket.
5) Supervise the members of the working class to abide by this regulation, correctly use labor protection articles and safety appliances, and implement on-site safety measures.
6) Pay attention to whether there are abnormal signs in the physical condition and mental state of the members of the working class, and whether the personnel changes are appropriate.
6. What is the safety responsibility of the work permit stipulated in the Distribution Safety Regulations? Distribution safety regulation 3.3. 12.3
Answer:
(1) When checking tickets, confirm whether the safety measures listed in the working ticket are correct and complete. When there is any doubt about the contents listed in the working ticket, you should ask the issuer of the working ticket clearly and supplement it when necessary. ?
(2) Ensure that the orders for stopping, sending and sending the work are correct.
(3) Confirm that the safety measures it is responsible for are correctly implemented.
7. What are the safety responsibilities of the special guardian for distribution specified in the Safety Regulations? Distribution safety regulation 3.3. 12.4
Answer:
(1) Define the ward and guardianship scope.
(2) Before work, explain the safety measures, dangerous points and safety precautions within the monitoring scope to the monitored personnel.
(3) Supervise the monitored personnel to abide by this regulation, implement on-site safety measures, and promptly correct the unsafe behaviors of the monitored personnel.
8. What are the safety responsibilities of the members of the working class stipulated in the Distribution Safety Regulations? Distribution safety regulation 3.3. 12.5
Answer:
(1) Be familiar with the work content and workflow, master the safety measures, identify the dangerous points in the work, and perform the procedures of disclosure and signature confirmation on the working ticket.
(2) Obey the command of the person in charge (guardian) and the special guardian, strictly abide by this regulation and labor discipline, work within the prescribed scope of work, be responsible for your own behavior at work, and care about work safety.
(3) Correct use of construction machinery, safety instruments and labor protection articles.
9. During the question and answer period, how should the person in charge of the work go through the formalities if he leaves the work site? Distribution safety regulations 3.5.5
Answer: During the working period, if the person in charge of the work needs to leave the working site temporarily, he should appoint a competent person to replace him temporarily. Before leaving, he should explain the work place clearly and inform all the members of the work class. When the original work director returns to the work site, he should also perform the same handover procedure. If the person in charge of the work needs to leave the work site for a long time, the original working ticket issuer shall replace the person in charge of the work, perform the change procedures, and notify all members of the working class and all work permits. The former and current work leaders shall perform the necessary handover procedures and sign the working ticket for confirmation.
10. What should the person in charge of the question-and-answer work do before going through the formalities of ending the work? Distribution safety regulation 3.7. 1
Answer: After the work is completed, the site should be cleaned up, and the person in charge of the work (including the person in charge of the shift) should check the status of the work area to ensure that there are no tools and materials such as personal safety wires left on the working power distribution equipment and auxiliary equipment such as towers, wires and insulators of the power distribution line, and after all personnel evacuate the lines and equipment, order the removal of the grounding wire and other safety measures installed by the shift. After the grounding wire is removed, no one may work on the pole or equipment.
1 1. What are the main contents of the end-of-work report specified in the Distribution Safety Regulations? Distribution safety regulations 3.7.5
Answer: The work end report should be concise and to the point, mainly including the following contents: the name of the person in charge of the work, the work situation of a certain line (equipment) (indicate the starting and ending tower number, branch line name, place title, dual name of equipment, etc. ) completed and repaired projects, test results, equipment changes and existing problems, etc. , the grounding wire installed by the team has been completely removed, and there are no staff and relics on the line (equipment).
12, Q&A What are the lines and equipment that should be cut off in the workplace according to the Safety Regulations for Power Distribution? Distribution safety regulation 4.2. 1
Answer: (1) Maintenance of distribution lines or equipment.
(2) The safety distance of operation lines or equipment adjacent to overhaul distribution lines and equipment is less than that specified in Table 4- 1.
(3) Equipment larger than that specified in Table 4- 1 and smaller than that specified in Table 3- 1, and without insulation shielding or safety barrier measures.
(four) crossing, parallel or on the same pole (tower) to erect lines that endanger the safety of line power outage and cannot take corresponding safety measures.
(5) Equipment that may transmit electricity from low voltage side to high voltage side.
(6) Branch lines (including users, the same below) that may transmit electricity in the opposite direction in the work area.
(7) Other lines or equipment that need power failure.
13. How to judge whether the equipment has no voltage through indirect electricity inspection? Distribution safety regulations 4.3.7
Answer: For the equipment that can't be tested directly, indirect testing should be conducted, that is, judging by the changes of mechanical position indication, electrical indication, field display settings, instruments, various telemetry and telecommunication signals. When judging, at least two instructions with different principles or different sources have changed correspondingly, and all these determined instructions have changed correspondingly at the same time, so as to confirm that the equipment has no voltage.
14, Q&A When verifying that there is no voltage in low-voltage distribution lines and equipment under maintenance, what measures should be taken at least to prevent reverse power transmission? Distribution Safety Regulation 4.4.2
Answer: (1) All phase lines and neutral lines are short-circuited to ground. (2) insulation shielding. (3) Lock and hang "No closing, someone is working!" Or "No closing, someone is working on the line!" Signboard.
15, what should I pay attention to when patrolling in windy weather? Distribution safety regulations 5. 1.4
A: In windy weather, walk along the windward side of the line to avoid touching broken wires. Accident patrol should always think that the line is live and keep a safe distance. Night patrol should be carried out along the outside of the line. Swimming is prohibited when patrolling the line.
16. What should the power distribution line patrol personnel do if they find that the high-voltage distribution lines and equipment are grounded or that the high-voltage wires and cables fall to the ground and hang in the air? Distribution safety regulations 5. 1.9
Answer: When high-voltage distribution lines and equipment are grounded or high-voltage wires and cables are broken or suspended on the ground during inspection, indoor personnel should be 4 meters away from the fault point, and outdoor personnel should be 8 meters away from the fault point; And quickly report to the dispatching control center and the superior for processing. Before handling, people should be prevented from approaching the grounding or disconnection place to avoid personal injury caused by stepping voltage. Personnel entering the above range should wear insulating boots and gloves when touching the metal shell of the equipment.
17, ask and answer how to install mechanical locks in the Safety Regulations for Power Distribution. "Safety Regulations" for Power Distribution in 5.2.3.4
Answer: (1) Disconnector (circuit breaker) handle and screen door are not set in power distribution station and switch station to prevent misoperation or failure of locking device.
(2) When the electrical equipment is in the cold standby state and the locking of the screen door is ineffective, there is an electric interval screen door.
(3) When the equipment is overhauled, the operating handles of all disconnectors (knife switches) on the incoming side of the circuit.
The mechanical lock should be opened with a key, and the key should be numbered and properly kept.
18. What are the operation items that can be answered without an operation ticket? "Safety Regulations" for Power Distribution in 5.2.5.2
Answer:
1) Emergency handling of accidents.
2) Single operation of closing circuit breaker (switch)
3) Program operation.
4) Low pressure operation.
5) On-site operation of the working group.
19. What are the rules for using the remote controller to operate the circuit breaker (switch) on site? "Safety Regulations" for Power Distribution in 5.2.8.6
Answer: Use the remote controller to operate the circuit breaker (switch) locally, and the code of the remote controller should only correspond to the number of the circuit breaker (switch). Before operation, check the duplicate names of field devices. The remote controller should have locking function, and remote control operation can only be carried out after unlocking. In order to prevent touching the unlock button by mistake, necessary protective measures should be taken for the remote controller.
20. What should I do before climbing the tower? Distribution safety regulation 6.2. 1
Answer: (1) Check the line name and pole number.
(2) Check whether the rod root, foundation and stay are firm.
(3) Check whether there are appendages on the tower that affect climbing.
(4) When grounding wires and stay wires that have been scoured, excavated, pulled up or loosened are found, they shall be reinforced with soil, laid with temporary stay wires or supported by poles.
(5) Check whether the climbing tools and facilities (such as foot buckles, lifting plates, safety belts, ladders and foot nails, ladders, anti-falling devices, etc.) are in good condition. ) are complete and reliable.
(6) Anti-skid measures should be taken when climbing the tower covered with snow, frost and rain.
(7) During climbing, check the transverse cracks and corrosion of hardware.
2 1. What are the safety requirements for using temporary stay wires in Q&A? Distribution safety regulations 6.3.6
Answer: (1) Don't use trees or bare rocks as bearing piles.
(2) There shall be no more than two temporary stay wires on an anchor pile.
(3) Temporary stay wires shall not be fixed on objects that may move or be unreliable.
(4) temporary stay binding work should be held by experienced personnel.
(5) Only after all permanent stay wires are installed can temporary stay wires be removed.
(6) When temporary stay wires are needed for the night during the tower construction, reinforcement and anti-theft measures should be taken for the temporary stay wires.
22. The question and answer questions are constructed with old lines and new lines. How to ensure safety? 6.4. 10 distribution safety regulations
Answer: If old wires are used for construction together with new wires, check to ensure that the old wires are intact and firm; If there are live lines and live equipment in the pay-off channel, keep a safe distance from them. If the safe distance cannot be guaranteed, measures such as erecting a spanning frame or power failure should be taken.
In the process of traction, a special person shall be arranged to track the connection point of the old and new wires, and the traction shall be stopped immediately when problems are found.
23. What are the safety regulations for high-voltage overhead insulated wires? 6.5.2 Distribution safety regulations
Answer:
(1) Overhead insulated conductors shall not be regarded as insulated equipment, and operators or uninsulated instruments and materials shall not directly touch or approach them. Overhead insulated conductors and bare conductors have the same operational safety requirements.
(2) During power outage maintenance, safety measures against induced electricity should be taken before disconnecting or connecting insulated wires.
24. In order to prevent parallel, adjacent or crossing transmission lines with live lines from being overhauled due to power failure, what measures should be taken? ? Distribution safety regulations 6.6.7
Answer:
(1) Each tower shall provide the line name and pole number.
(2) The person in charge of the work shall check the name and pole number of the power outage maintenance line and confirm that the line has been powered off and the grounding wire is hung before the work can be announced.
(3) When working on this section of the line, the operator should check the name and pole number of the power outage maintenance line before climbing the tower, and assign special personnel to supervise before climbing the tower.
25. Q&A What measures should be taken to prevent live lines from being mistakenly boarded? Distribution safety regulations 6.7.5
Answer:
(1) Each tower shall be equipped with identification marks (color code, identification marks, etc.). ), line name and pole number.
(2) Before work, the identification marks of corresponding lines shall be issued to the operators.
(3) The person in charge of the work shall check the identification mark, line name and pole number of the power outage maintenance line, and confirm that the line has indeed been powered off and hung up the grounding wire before announcing the start of work.
(4) Before climbing the tower, the operator should check the identification mark, line name and pole number of the power outage maintenance line before climbing the tower.
(5) When climbing the tower and working on it, each tower shall be supervised by designated personnel.
26. What are the safety requirements for live disconnection and connection of low-voltage wires? Distribution safety regulation 8.2. 1
Answer: Live low-voltage wires should be monitored. Before disconnecting and connecting wires, check the phase (live) and neutral wires. When disconnecting wires, disconnect the phase wire (live wire) first, and then disconnect the neutral wire. When overlapping wires, the order should be reversed. It is forbidden for human body to touch two wires at the same time. It is forbidden to pull off and connect wires with load.
27. Under what circumstances should the reclosing be stopped when the problem is charged, and power transmission is not allowed? Distribution Safety 9.2.5
Answer:
1) Operation that may lead to single-phase grounding in a system with effective neutral grounding.
2) Operation that may lead to phase-to-phase short circuit in the system with ungrounded neutral point.
3) When the working ticket issuer or working director thinks it is necessary to stop the reclosing, the reclosing shall be stopped and power transmission shall not be forced. It is forbidden to make an appointment to stop or resume reclosing.
28. What are the safety measures for the operation between high voltage drop fuse and cable head? Distribution safety regulations 12.2. 1 1
Answer: (1) When operating, install a transition connection device to keep a safe distance from the live part of the pile head on the fuse.
(2) When the upper pile head of the drop fuse is charged, and it is necessary to install or replace the cable terminal lead or lift and lap the cable terminal head and lead, insulating tools should be used, and the upper pile head of the drop fuse should be isolated with an insulating cover, and the lower pile head should be grounded.
(3) When working, the operator should stand in a lower position, reach no more than the pile head under the falling fuse, and be supervised by designated personnel.
(4) It is forbidden to carry out the above work in rainy days.
29. In the question and answer, the safety measures for trenchless construction of cable channel are briefly introduced. 12.2. 15
Answer: (1) Before trenchless construction, we should find out the relative positions of various underground pipeline facilities.
(2) Trenchless passages should keep a sufficient safe distance from underground pipelines and facilities.
(3) At the same time as the passage is formed, measures such as grouting should be taken in time in the construction area to prevent subgrade settlement.
30. Question and answer: In the grid-connected agreement signed between the power grid management unit and the distributed power users, what contents should be clarified in terms of safety? 13.2.3
A: The interconnection agreement shall at least specify the following contents:
1) Operation mode of parallel node disconnection equipment (belonging to users).
2) Safety measures during maintenance. Both parties should cooperate with each other to take safety measures such as isolation, grounding, locking or hanging signs for power grid outage maintenance, and clarify the safety isolation scheme for grid connection.
3) The grid-connected equipment disconnected by the power grid management unit should still be restored by the power grid management unit.
3 1, which safety instruments should be tested? 14.6.2.2
Answer: The safety instruments to be tested are as follows:
(1) Safety instruments that need to be tested according to regulations.
(2) Newly purchased and homemade safety instruments.
(3) Overhauled safety instruments or replaced key components.
(4) Safety instruments with doubts or defects in mechanical and insulation performance.
(5) Safety instruments of the same batch with problems.
32. What should I pay attention to when using a ladder to ask and answer questions?
Answer: (1) The ladder should be firm and complete, with anti-skid measures. The pillars of the ladder should be able to bear the total mass of the workers and the tools and materials they carry when climbing.
(2) The rung of a single ladder should be embedded in the column, and a height limit sign should be set at 1m from the top of the ladder. When working with a single ladder, the inclination angle between the ladder and the ground is about 60 degrees.
(3) Ladders should not be bundled. The inclined ladder should have measures to limit the opening.
(4) When people are on the ladder, it is forbidden to move the ladder.
33. What are the basic principles of emergency rescue? Distribution safety regulations P. 1. 1
A: The basic principle of emergency rescue is to take active measures at the scene to protect the lives of the wounded, alleviate the injury and alleviate the pain, and contact the medical emergency center (medical department) for treatment according to the needs of the injury.
34, emergency rescue questions, what rescue methods should the field staff master? Distribution safety regulations P. 1.3
Answer: On-site staff should receive regular training, learn emergency rescue methods, release power correctly, know cardiopulmonary resuscitation, stop bleeding, bandage, fix, transfer and transport the wounded, and give first aid to trauma or poisoning.
35. What methods can make the power supply get an electric shock? Distribution safety regulations P.2.2.4
Answer: For high-voltage electric shock, one of the following methods can be used to make the electric shock person leave the power supply:
1) immediately notify the relevant power supply units or users of power failure.
2) Wear insulating gloves and boots, and turn on the power switch or fuse in turn with insulating tools of corresponding voltage levels.
3) The bare metal wire is thrown to short-circuit the line to ground, forcing the protection device to act and disconnect the power supply. Note that before throwing the wire, one end of the wire should be fixed and reliably grounded, and then the other end should be tied with a heavy object before throwing it. Be careful not to touch the person who gets an electric shock or other people at the thrown end. In addition, after throwing the wire, the wire thrower should quickly leave the grounded metal wire 8 meters away or stand with his legs together to prevent the step voltage from hurting people. When taking a short route, attention should be paid to prevent electric arc from hurting people or wire breakage from endangering personnel safety.
36. Q&A The injured person loses consciousness after no electricity. What method should be used to determine whether the injured person is breathing within 10s after opening the airway? Distribution safety regulation P.2.3.2.2
Answer: If the electric shock victim loses consciousness, it should be judged whether the injured person is breathing within 10s after opening the airway.
A) Look: Look at the chest and abdominal wall of the wounded for breathing fluctuations.
B) Listen: Put your ear close to the nose and mouth of the injured person and listen to the breathing.
C) Test: Use facial sensation to test whether there is expiratory airflow in the nose and mouth.
37. What are the principles of trauma first aid? Distribution safety regulations P.3. 1. 1
A: In principle, the first aid for trauma is first rescue, then fixation, and then treatment, and attention should be paid to taking measures to prevent the injury from aggravating or polluting. Need to be sent to hospital for treatment, should immediately take measures to protect the wounded before being sent to hospital for treatment.
38. What are the main symptoms of high temperature heatstroke? Distribution safety regulation P.3.9
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A: Direct sunlight on the head, too high ambient temperature, too little drinking water or too much sweating can all cause heatstroke. Its symptoms are generally nausea, vomiting, chest tightness, dizziness, lethargy and collapse, and in severe cases, convulsions, convulsions and even coma may occur.