What are the three counts, four tests and five prohibitions of the State Grid?

One and three calculations

(1) The cable must be calculated and checked

1. Construction plans involving cables must strictly follow the approval procedures. Among them, the general construction plan is calculated and prepared by the technicians of the construction project department organized by the construction operation team technicians, reviewed and approved by the chief project engineer of the construction project department, and approved by the chief supervisory engineer of the supervision project department. The special construction plan shall be calculated and prepared by the chief project engineer of the construction project department and organized by the construction project department technicians and operation team technicians. After approval by the technical person in charge of the construction enterprise, it shall be submitted to the chief supervisory engineer of the supervision project department for review and approval by the owner's project manager; (the special plan requires the owner Approved by the project manager, this requirement is inconsistent with the standardized manual, and the corresponding review form needs to be modified)

2. Whether to use guy wires during construction operations should be calculated by the programmer of the construction project department based on the actual situation and regulations. Confirmed;

3. The planner of the construction project department should select the corresponding safety factor for calculation based on the stress of the wire rope, and determine the specifications by considering the safety factor of the wire rope, leaving sufficient margin;

4. The calculation sheet, layout method and requirements of the guy wires should be clarified in the construction plan by the planner of the construction project department. Each calculation sheet should be signed by the calculator (the calculator related to the plan preparation) and the reviewer (the organizer of the plan preparation). (This section deletes "If there is any inconsistency with the original plan, supplementary calculations should be made based on the actual conditions on site and corresponding procedures should be performed.")

(2) Ground anchors must be calculated and verified

1. For construction plans involving ground anchors, the approval procedures should be strictly followed. The editing and approval procedures should be strictly followed. Among them, the general construction plan is calculated and prepared by the technicians of the construction project department who organize the construction and the technicians of the operation team, reviewed and approved by the chief project engineer of the construction project department, and reported to the chief supervisory engineer of the supervision project department for approval. The special construction plan shall be calculated and prepared by the chief engineer of the construction project department, organized by the construction project department technicians and construction operation team technicians, and reviewed and approved by the technical person in charge of the construction company, and then submitted to the chief supervisory engineer of the supervision project department for review and approval by the owner's project manager;

2. The number and method of laying ground anchors should be calculated and determined by the planner of the construction project department based on the actual situation and regulations;

3. The planner of the construction project department should calculate the ground anchors First, determine the bearing capacity according to the stress situation, and then calculate the specific burial requirements of the ground anchor based on the type of ground anchor and soil quality and taking into account the necessary safety factor;

4. Calculation sheet, layout method and burial of ground anchors The requirements should be specified in the construction plan by the plan preparer of the construction project department. Each calculation sheet should be signed by the calculator (the calculator related to the plan preparation) and the reviewer (the organizer of the plan preparation).

(3) The safe distance for operations near live bodies must be calculated and verified

1. Construction plans involving nearby live bodies must strictly follow the approval procedures. Among them, the general construction plan is calculated and prepared by the technicians of the construction project department who organize the construction and the technicians of the operation team, reviewed and approved by the chief project engineer of the construction project department, and reported to the chief supervisory engineer of the supervision project department for approval. The special construction plan shall be calculated and prepared by the chief engineer of the construction project department, organized by the construction project department technicians and construction operation team technicians, and reviewed and approved by the technical person in charge of the construction company, and then submitted to the chief supervisory engineer of the supervision project department for review and approval by the owner's project manager;

2. Whether there is work near live bodies during construction operations should be clarified by the program preparer of the Construction Project Department in the risk inventory and the approval procedures should be performed;

3. The program preparer of the Construction Project Department should When checking the safe distance for operations near live bodies, a comprehensive check should be carried out based on the safety distance requirements for live bodies, personnel, machinery, tools, components, etc. that may enter the safe distance during construction operations, and deformation, disability, instability, etc. should be taken into consideration Factors should be calculated and determined after leaving necessary margins;

4. The calculation of safe distances for operations near live bodies and the requirements for operational safety measures should be clarified in the construction plan by the programmer of the construction project department . Each calculation sheet should be signed by the calculator (the calculator related to the plan preparation) and the reviewer (the organizer of the plan preparation).

Two and four inspections

(1) The cable must pass the inspection before being put into use

1. The construction unit and construction project department should establish a machine tool management ledger , the safety officer of the construction project department organizes regular maintenance and annual inspections of the steel wire ropes used, and the professional supervision engineer organizes a pre-entry review of the steel wire ropes planned to be put into use; (the safety officer organizes the maintenance of the steel wire ropes, and the responsibilities are misplaced , the safety officer is responsible for supervising and inspecting safety management and the implementation of measures. This should be the responsibility of the warehouse manager and material station director)

2. Before the cable enters the operation site, the construction operation team is responsible Personnel and team technicians will verify and accept the specifications, quantity, appearance, etc. of the cables in accordance with the requirements of the construction technical plan, and professional supervision engineers will conduct re-inspections.

3. Before the guy wire is put into use, the construction team leader, team safety officer, and team technician should check the angle between the guy wire and the ground according to the requirements of the construction technical plan, and whether the saddle screw configuration specifications and quantity match the steel wire rope. and installation methods, etc. shall be checked and accepted, and the safety supervision engineer or supervisor shall conduct re-inspection.

4. During construction operations, the safety officers and team technicians of the construction operation team should continuously monitor the status of the pull wires in accordance with the requirements of the construction technical plan, and the safety supervision engineer or supervisor should inspect the operation process and status of the pull wires. examine.

5. If the above-mentioned steps are not accepted, no follow-up work will be carried out.

(2) Ground anchors must pass inspection before being put into use

1. The construction unit and the construction project department should establish a machine and tool management ledger, and the safety officer of the construction project department should organize the inspection of the used equipment. Ground anchors undergo regular maintenance and regular self-inspections, and professional supervision engineers organize pre-entry reviews of ground anchors planned to be put into use;

2. Before ground anchors enter the work site, the construction team will The person in charge, team safety officers, and team technicians shall verify and accept the ground anchor specifications, quantity, appearance, etc. according to the requirements of the construction technical plan, and professional supervision engineers or supervisors shall conduct re-inspections.

3. During the construction of ground anchors, the construction team leader, team safety officer, and team technician should conduct concealed engineering verification and acceptance, and professional supervision engineers should conduct re-inspection.

New Knowledge Expert, 2021 version of Three Calculations, Four Verifications and Five Prohibited Interpretation

4. After the ground anchor is buried and put into use, the construction operation team leader and team safety officer shall press The construction plan and procedures and specifications require acceptance, and the safety supervision engineer will be listed and publicized after passing the re-inspection;

5. During construction operations, the construction team technicians and team safety officers should conduct ground inspections in accordance with the requirements of the construction technical plan. The anchor status is continuously monitored, and safety supervision engineers or supervisors conduct inspections on the operation process and ground anchor status.

6. If the acceptance of the above-mentioned links is not passed, subsequent work shall not be carried out.

(3) The ropeway must pass inspection before being put into use

1. The construction unit and the construction project department should establish a machine management ledger, and the safety officer of the construction project department should organize the inspection of the used ropeway Carry out regular maintenance and regular self-inspections, and professional supervision engineers organize a pre-entry review of the ropeway planned to be put into use;

2. The ropeway construction plan is organized by the chief project engineer of the construction project department and technicians of the construction project department , after the calculation and preparation by the technicians of the construction operation team and the approval of the technical person in charge of the construction enterprise, it shall be reported to the chief supervisory engineer of the supervision project department for review and approval by the owner's project manager; the corresponding calculation books shall be prepared by the calculator (the calculator related to the plan preparation) and the reviewer ( Program preparation organizer) signature. (According to the calculation book, this should be included in the three calculations. The forces on the cableway saddle, sports car, etc. should be included in the three calculations, but then it will become four calculations, and the formula will not sound good)

3. Ropeway After the installation is completed and put into use, the construction team leader, team technician, and team safety officer shall conduct acceptance inspection in accordance with the requirements of the construction plan and regulations. After the safety supervision engineer conducts a re-inspection, the owner's project department will be listed for public notice after passing the safety inspection;

4. During construction operations, the safety officers and team technicians of the construction operation team shall continuously monitor the operating status of the ropeway in accordance with the requirements of the construction technical plan, and the safety supervision engineer or supervisor shall inspect the operation process and the status of the ropeway. examine.

5. If the above-mentioned steps are not accepted, no follow-up work will be carried out.

Anchor bolts for (four) groups of towers must pass inspection before erection operations

1. Before the anchor bolts enter the site, professional supervision engineers should strictly implement the "Anchors for Transmission Line Projects" "Measures for the Whole Process Control of Bolts (Trial)" (State Grid Infrastructure [2018] No. 387), organize the acceptance of anchor bolts;

2. Before the tower assembly and sequence acceptance, the construction team will The technician is responsible for self-inspection, and the person in charge of the construction operation team will confirm it. For acceptance inspection before tower assembly, the quality inspector of the construction project department, the professional supervision engineer of the supervision project department, and the owner's project department quality manager should check the matching of the screws, nuts, and backing plate marks of the anchor bolts;

3. After the installation of the tower foot plates is completed, the construction team technicians should check the installation and anti-removal conditions of the anchor bolts and mark them, and the safety supervision engineer or supervisor should review them.

4. During tower erection operations, the construction team technicians should check the installation and removal prevention of anchor bolts before each operation, and the safety supervision engineer or supervisor should review the foundations one by one. Foot bolts.

5. Before the wiring sequence is transferred and accepted, the construction operation team technician shall be responsible for completing the self-inspection, and the construction operation team leader shall confirm it. During the acceptance inspection, the quality inspector of the construction project department, the professional supervision engineer of the supervision project department, and the owner’s project department quality manager should check whether the two nuts, the backing plate and the tower foot plate are close to each other;

6. The above-mentioned links are not accepted for acceptance. If passed, no further work is allowed.

Three and five prohibitions

(1) It is prohibited to operate in limited space and other conditions without meeting ventilation and protection requirements

1. Proposed by the technician of the construction operation team , after review by the technician of the construction project department, report to the chief engineer of the construction project department to clarify the scope of limited space operations in the risk inventory to avoid omissions of limited space operations;

2. Operations in limited spaces (including but not limited to lines foundation pit, cable trench, transformer body, etc.), the person in charge of the construction operation team is responsible for obtaining ventilation testing equipment. Before the operation, the technicians of the construction operation team will make a briefing. The safety officer of the construction operation team will organize the workers to ventilate and then test to ensure that the gas content in the limited space meets the operation requirements before the operation. During the operation, the safety officer of the construction operation team will supervise the whole process. Workers should ventilate at required intervals and conduct inspections at required intervals. Safety supervision engineers or supervisors shall conduct on-site supervision and inspection.

3. For manual excavation of foundations and pile digging, the team leader at the construction operation level is responsible for receiving the integrated device for deep foundation pit operations. Before the operation, the technicians of the construction operation team conducted briefings, and the safety officers of the construction operation team organized the workers to operate the devices correctly; during the operation, the safety officers of the construction operation team organized the use of deep foundation pits from the beginning of drilling until the completion of the foundation concrete pouring. Integrated work device. Safety supervision engineers or supervisors shall conduct on-site supervision and inspection.

4. For rock foundation blasting operations, the carbon dioxide fracturing method should be adopted in the "mandatory application areas and promoted application areas" specified by the company, and the application should be actively promoted in other areas. Before the operation, the technicians of the construction operation team made safety briefings to relevant personnel. The safety officers of the construction operation team organized the workers to correctly assemble the cracking pipes, inflate them, and seal the holes; after the cracking was completed, the person in charge of the construction operation team used a special air supply Use equipment to ventilate the hole, and use a gas detector to detect the gas content in the pit. Only when the gas content is qualified can the pit cleaning operation be carried out. Safety supervision engineers or supervisors will conduct on-site supervision throughout the entire process.

(2) High-altitude operations such as tower lines and other high-altitude operations are prohibited without the use of climbing self-locking devices and speed difference automatic controllers

1. Entry of climbing self-locking devices and speed difference automatic controllers In advance, the safety officer of the construction project department and professional supervision engineers should organize inspection and acceptance;

2. The person in charge of the construction operation team is responsible for equipping the personnel working at high altitudes in the tower erection line with climbing self-locking devices and speed differential automatic controllers. (or safety rope), the construction operation team safety officer, safety supervision engineer or supervisor should be present at the scene for supervision;

3. The construction operation team safety officer should correctly use the tower erection line for high-altitude workers to go up and down the tower Climb the self-locking device to check, and the safety supervision engineer or supervisor will supervise the whole process;

4. The safety officer of the construction operation team should correctly use the speed difference for the high-altitude workers of the tower erection team when working at high altitudes. The automatic controller (or safety rope) is used to check, and the safety supervision engineer or supervisor supervises the entire operation process.

(3) It is prohibited not to wear life-saving equipment when riding on a ship or working on the water

1. Before riding on a ship or working on the water, the technician of the construction operation team shall make a proposal, and after review by the technician of the construction project department , the plan preparer of the construction project department shall clarify the measures in the construction technical plan and explain the details to the operation team;

2. The ships or other equipment rented for water operations or transportation shall be leased by the project manager of the construction project department. Contracts, security agreements.

3. Ship excavation equipment rented for water operations or transportation, as well as safety equipment such as life jackets, will be organized by the safety officer of the construction project department for regular maintenance and periodic self-inspection, and professional supervision engineers will organize the admission.

4. Before working on the water and boarding the ship, the person in charge of the construction operation team should organize safety briefings for relevant personnel, issue instructions for starting operations and sailing, and prevent overcrowding, overloading, strong winds, Water operations or transportation are carried out in heavy fog, heavy snow and other bad weather; safety officers from the construction project department ensure that personnel working on the water and on ships wear life jackets as required; safety supervision engineers or supervisors conduct on-site supervision.

5. When working on the water and riding on the ship, the safety officer of the construction project department shall supervise the personnel working on the water and riding on the ship to wear life jackets in accordance with the regulations, and supervise that the ship shall not deviate from the course.

6. After the water operations and boat rides are completed, the person in charge of the construction operation team will name the personnel working on the water and the boats, the safety officer of the construction project department will review, and the safety supervision engineer or supervisor will confirm.

(4) Tightly broken wires and translational wires are hung up. It is prohibited to move sub-conductors alternately

1. For tightly broken wires and translational wires and hanging wires, the construction team technicians shall formulate measures and After checking the stress situation of the pole and tower, technicians from the construction project department will formulate measures after review, and make briefings to the construction team.

2. Before hanging the tight-break translational conductor, the technicians of the construction operation team shall make an explanation. The person in charge of the construction operation team shall organize the workers to tie the pull wires according to the measures. The construction operation team technicians and team safety Workers should check the pulling conditions of the cables according to the construction plan, and safety supervision engineers or supervisors should conduct on-site supervision;

3. The person in charge of the construction team in the case of tight broken wires, translational wires and hanging wires should direct the workers Translate the sub-conductors alternately to avoid causing unilateral force instability of the tower;

4. During the translation of the sub-conductors, the safety officer of the construction operation team and the technicians of the construction operation team will monitor the operators throughout the process , Safety supervision engineers or supervisors shall supervise the entire operation process.

(5) When assembling the tower and standing on the pole, it is prohibited to use the formal installation method

1. The construction unit and construction project department should establish a machine management ledger, and the construction project department safety officer Organize regular maintenance and regular self-inspections on the poles and cables used, and professional supervision engineers organize pre-admission reviews of the poles and cables planned to be put into use;

2. Internal suspension and external cables The assembly of poles, aluminum alloy small poles and ordinary floor poles shall be calculated and prepared by the technicians of the construction project department organized by the technicians of the construction operation team (the selection of poles shall be calculated and determined by the construction plan preparer based on the actual situation and regulations) , and be specified in the construction plan), the construction project department will review and approve the project chief engineer, and submit it to the supervision project department chief supervisory engineer for approval.

3. The assembly of floor-standing poles (including double flat-arm floor poles, rocker arm poles, etc.) and internally suspended internal cable poles should be organized by the construction project department’s chief engineer Technicians and construction team technicians calculate and prepare special construction technical plans (the selection of poles should be calculated and determined by the construction plan compiler based on the actual situation and regulations and specifications, and be specified in the construction plan; the internal suspension and internal cable pole group The pole must be equipped with a force monitoring device, which can remotely and online monitor the stress of the main components of the pole, inclination data, abnormal working conditions, working status, etc.). After approval by the technical person in charge of the construction company, it shall be reported to the chief supervisory engineer of the supervision project department for review. With the approval of the owner's project manager, the chief project engineer of the construction project department will brief the working team;

4. When assembling poles with a length of more than 30 meters, use the inversion method to connect and assemble multiple times.

5. Before the pole formation, the construction team technicians will make a briefing; during the formation process, the construction team safety officers and construction team technicians will monitor the workers throughout the process, and the safety supervision engineer Or a supervisor will supervise the whole process during the operation.

Legal basis:

"State Grid Corporation of China Electric Power Construction Safety, Health and Environmental Management Regulations"

Article 10 Safety Construction Objectives of Hydropower Construction Enterprises;

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1. No major personal casualties;

2. No major damage to construction machinery and equipment;

3. No major fire accidents;

4. No major traffic accidents will occur;

5. No major environmental pollution accidents and major collapse accidents will occur.

Article 11 Thermal power, power transmission and transformation construction enterprises shall implement three-level control objectives for safe construction:

1. Enterprises shall control serious personal injury accidents and avoid personal deaths and major construction machinery Equipment, fire and major traffic accidents;

2. Professional construction sites control minor personal injury accidents and major near misses, and do not cause serious personal injury accidents and general machinery, equipment, fire, and responsible traffic accidents;

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3. The team controls near misses and records accidents, and does not cause minor personal injuries or other general accidents.