What are the key points for safety production supervision in construction projects?

1. Safety Management 1. The full-time safety production management personnel of the construction site engineering project department should meet the following requirements: no less than 1 person for projects of 10,000 square meters and below; 1 to 50,000 square meters There should be no less than 2 people for projects of 50,000 to 100,000 square meters; no less than 3 people for projects of 50,000 to 100,000 square meters; if there are 3 or more full-time safety production management personnel, they should be set up according to profession and form a safety management team. 2. Construction enterprises should identify and evaluate hazard sources existing on the construction site, confirm major hazard sources, establish a major hazard source monitoring and publicity system (together with five cards and two maps), identify responsible persons, and formulate emergency response plans based on specific circumstances. Plan. 3. The content of the safety technical briefing should include: the operating characteristics and hazard sources of the engineering project, preventive measures against hazard sources, safety protection facilities in the workplace, safe operating procedures and standards, safety precautions, and timely evacuation measures to be taken after an accident. and first aid measures, etc. Safety technical disclosures should be specific, clear, and easy to understand. 4. The number of inspections should be no less than once per month for the enterprise, no less than once per week for the project department, and full-time safety production management personnel should conduct inspections every day. Potential safety hazards existing at the company's inspection site should be accompanied by rectification responses from the project department and company review records. 5. Special construction workers should be employed by a construction company or construction machinery leasing company and hold a certificate to work. 6. The construction site should have a layout plan of safety signs. Safety signs should be hung according to the diagram, especially relevant safety signs should be hung at main construction parts, operating points, dangerous areas and main entrances. 7. The special plan shall be reviewed by the technical department of the construction unit organized by professional and technical personnel from the construction technology, safety, quality and other departments of the unit. If it passes the review, it will be approved and signed by the technical person in charge of the construction unit. If general contracting of construction is implemented, the special plan shall be approved and signed by the technical person in charge of the general contracting unit and the technical person in charge of the relevant professional contracting unit. After being approved by the construction unit, it shall be submitted to the supervision unit for approval and signature by the project chief supervisory engineer. Only after passing the qualification can on-site construction be carried out according to this special plan. 2. Civilized construction 1. The walls of construction areas and living areas are generally not less than 2.5m in urban areas, and municipal infrastructure are generally not less than 2.1m. Implement “beautification, lighting, ordering, and cleanliness” on the outside of the construction wall. "Five signs and two pictures" (project overview sign, management personnel list and supervision telephone number sign, safety production system sign, fire protection system sign, civilized construction system sign, site general plan, and safety sign layout plan) are set up at obvious places at the main entrances and exits. Entrances and exits are marked with the business name or logo. In construction areas such as municipal roads and pipelines in non-urban areas, gates should be set up at obvious entrances and exits (the gates should be marked with the company name or company logo), and passages should be left and hard fences should be set up where there are pedestrians and vehicles. Warning lines such as colorful flags and ribbons can be set up in other areas. 2. Color steel plates should be used for enclosures within the influence range of deep foundation pits and areas with dense human flow. 3. The door (doorpost) should have the "image logo" of the company. The door should be made of hard material (non-permeable) and strive to be beautiful and generous. 4. Hard floors should be installed at the entrance and exit of the construction site gate, the main road in the working area, the main road in the living area, around the building, the processing site, and the mechanical material storage place, and a 20×20cm drainage ditch should be set up. The width of the main channel (the road used by concrete trucks) should be more than 3.5m, and hardening measures should be taken on secondary roads as appropriate. 5. Vehicle washing facilities should be installed at the exit of the construction site. Drainage ditches and sedimentation tanks should be installed on the site. Construction sewage can be discharged into municipal sewage pipe networks or rivers after sedimentation. 6. High-rise or multi-story construction waste must be transported by container lifting, and throwing in the air is strictly prohibited. 7. High noise equipment should be installed on the side away from residential areas. 8. Temporary toilet facilities should be installed on every floor of high-rise buildings, and every second floor of multi-storey buildings. 9. Building materials, components and other materials must be safely and neatly stacked (stored) and must not be super high. Stacks of materials should be classified into categories and signs should be hung. Signs should be made uniformly, indicating the name, variety, specification quantity, inspection status, etc. 10. Office areas and living areas should be located outside the falling radius of construction objects and the operating radius of tower cranes and other machinery. When the requirements cannot be met, a safety protection shed should be added.

11. Temporary buildings should prepare a special construction plan, which must be approved by the technical director of the enterprise and can only be used after passing the acceptance inspection. 12. The construction units of masonry buildings and masonry enclosures should have construction qualifications, and the assembly and disassembly of mobile houses must be carried out by professional manufacturers. 13. Restaurants, reference rooms, conference rooms, and schools for migrant workers should be located on the ground floor of temporary buildings. 14. The number of temporary buildings should not exceed two floors, and the maximum allowable length should not be greater than 60m. Safety exits should be arranged dispersedly. The distance between buildings should not be less than 3.5m. The net width of stairs and corridors should not be less than 1.0m, the height of stair handrails should not be less than 0.9m, and the height of outer corridors should not be less than 1.05m. 15. The construction area should be clearly separated from the office and living areas, and corresponding isolation measures should be taken. It is strictly prohibited to use gas stoves, rice cookers and other appliances in staff dormitories, and it is strictly prohibited to live in kitchens, work areas, simple rooms, etc. The staff canteen must be kept clean. 16. Each floor of the building should be equipped with fire-fighting facilities. High-rise buildings should have fire-fighting water source pipes (pipe diameter 50mm) along each floor, and set up pressurized pumps, leave fire-fighting water source interfaces, and be equipped with water and hoses. 3. Scaffolding 1. It is strictly prohibited to use fastener-type steel pipe cantilevered unloading platforms and steel pipe cantilevered scaffolding. 2. In the special construction plan for cantilevered scaffolding, the load-bearing capacity of cantilever beams, steel cables, lifting rings, pressure rings, embedded parts, welds and building structures should be calculated. Cantilevered beams should be calculated as cantilever structures, and the force exerted by the wire ropes on the cantilever structure should not be considered. At the same time, it should be considered that when the pressure ring is damaged, the steel wire rope is used as a stressed member for verification. The I-beams, channel steels, steel plates, anchor bars, wire ropes, etc. used in the cantilever frame should have raw material factory certification documents and performance test reports. The layout of the steel sections and embedded parts of the cantilever frame must have a plan. After the embedded parts are embedded, there should be an acceptance record signed and approved by the safety officer, project technical leader, and professional supervision engineer. 3. Formwork supports, wind ropes, and delivery pipes for pumping concrete and mortar are not allowed to be fixed on the scaffolding, and lifting equipment is strictly prohibited. 4. The vertical pole foundation must be hardened first and then erected. A drainage ditch with a cross-section of no less than 200×200mm should be set outside to keep the vertical pole foundation from water accumulation, and concrete should be hardened within a wide range of 800mm on the outside. 5. External scaffolding should not be installed on roofs, awnings, balconies, etc. If necessary, the structural safety of roofs, awnings, balconies and other parts should be checked separately, and the special construction plan should be clearly stated and confirmed and stamped by the design unit. 6. If the erection height exceeds 24m, double poles or reduced spacing must be used. The height of the secondary pole in the double poles should not be less than 3 steps and not less than 6m. 7. The tie between the frame and the building should comply with the following regulations: (1) The connecting wall parts should be set close to the main node, and the distance from the main node should not be greater than 300mm. When it is greater than 300mm, strengthening measures should be taken. (2) The connecting wall parts should be installed starting from the first longitudinal horizontal pole on the ground floor (2 meters above the ground). (3) The connecting wall parts should be connected to the building using rigid connecting wall parts. (Must be over 24 meters) (4) The connecting wall rods should be set horizontally. When they cannot be set horizontally, the end connected to the scaffolding should be connected diagonally downward instead of upward. (5) The spacing between connecting wall members should comply with the requirements of the special construction plan, and should not be greater than 3 spans in the horizontal direction, 2 steps in the vertical direction, or 4 meters. The connecting wall parts should be encrypted within 1m of the corner of the building and within 800mm of the top. (6) Wall-connecting parts must be installed at both ends of straight-shaped and open-type scaffolding. The vertical spacing between wall-connecting parts should not be greater than the floor height of the building, and should not be greater than 4m or 2 steps; (7) The height of one erection should not be greater than It should be two steps above the adjacent wall parts. (8) When the height of the frame exceeds 40m and there is wind vortex effect, wall-connecting measures should be taken to resist the upturn effect. (9) The outer frame of the scaffolding shall be fully enclosed every three steps as well as the bottom, working layer, and overhanging layer of the cantilever frame. If the clear distance between the vertical poles and the wall in the scaffolding body is greater than 20cm, stand plates or internal railings must be laid, and the arc-shaped main body of the scaffolding should be protected at both ends. (10) Rebar welded steel pipes and expansion bolts should not be used as wall attachments. (11) The surface of the wall-connecting parts should be painted with eye-catching red paint to facilitate inspection and warning. 8. The vertical poles of the ramp should be set up separately, and scaffolding poles should not be borrowed. A connection should be provided at every other step or vertical distance in the vertical and horizontal directions.

9. The setting of cantilever beams should meet the following basic requirements: (1) The connection between the cantilever beams and the building structure should be horizontal and fixed on the building beam-slab concrete structure. The horizontal anchoring section should be greater than 1.5 times the cantilever section and connected with the building. The connection between things is reliable. (2) Two or more pre-embedded U-shaped round steel or bolt buckles can be used to fix the cantilever beam and the building. The two pre-embedded buckles should be set on the beam and 100MM at the tail end of the cantilever beam. at.

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