Do you have any common safety problems at construction sites?

What are the common safety problems at construction sites? Below, Zhongda Consulting will give you a detailed introduction for your reference.

1. Use of personal protective equipment (PPE)

1. The safety helmet is aged, damaged, or repaired or modified by someone.

2. Failure to wear the helmet correctly: The hat is not worn correctly and the hat strap is not fastened.

3. Failure to wear qualified safety glasses.

4. The face shield is not worn correctly.

5. No safety glasses were worn under the welding mask, and the welding assistant did not use sunglasses.

6. Failure to select and wear appropriate protective gloves according to different types of work. Each team must ensure that your employees have gloves.

7. On-site personnel did not wear reflective vests.

8. The sleeves of work clothes are rolled up and open, exposing the skin directly.

9. Construction site drivers and others did not use seat belts, did not put on PPE and closed the door when getting out of the car.

2. Working at heights

1. The safety belt is unqualified, damaged, and has no inspection mark. If the team has unqualified safety belts or no labels, they must be replaced in time.

2. When working on a mobile scaffold exceeding 1.8 meters, the safety belt is not used correctly. The safety belt should be hung at a high place.

3. When stacking materials, loading and unloading materials, no anti-fall protection is used when the height exceeds 1.8 meters.

There is no warning area below the height operation, or the safety range of the warning area is insufficient (2 times ), and the warning area is not closed, leaving a gap

4. When working at heights, the safety belt is not used high and low, and the safety distance of the buffer belt for falling is not taken into consideration.

5. The safety belt suspension point is unreliable and unstable, such as hanging under the steel structure or on the edge of the scaffolding pipe.

6. There are no anti-fall protection measures for tools and equipment at high places, such as using tool bags or tying.

7. Cross-working operations, the people below are not protected.

8. If people do not achieve 100% fall protection when moving at high places, double hooks should be used alternately.

9. Materials working at heights are not cleaned up in time, and there is no anti-fall protection, such as using buckets or bags to store loose materials.

10. Failure to consider safe passages in and out of high-altitude working floors before operation.

11. All passage openings, fire protection and electrical box doors are prohibited to be blocked, and wires, gas bottles or other objects are not allowed to be placed at the passage openings.

3. Hot work

1. The welding machine was not inspected before operation, and the welding wire connectors (terminals) were in poor contact, causing local high temperature and fire.

2. Failure to inspect and clean the surrounding area at a safe distance before hot work, leaving flammable and combustible materials.

3. Qualified fire extinguishers are not equipped for fire work, and fire extinguishers are placed improperly.

There must be a fire guardian, and any danger during the operation can be eliminated in time.

4. The gas cylinder is not fixed and the fixing position is incorrect. It should be fixed at 2/3 above the gas cylinder.

5. Unsuitable gas cylinders do not have protective steel caps. Cylinders stored in cylinder cages are not secured.

6. There are no safety signs and warning signs where the gas cylinders are stored, and the storage distance between acetylene and oxygen is not enough.

7. During gas welding operations, the distance between the acetylene cylinder and the oxygen cylinder is less than 5 meters, and the distance between the gas cylinder and the ignition point is less than 10 meters.

8. The outlet hose of the gas cylinder is seriously aged, and the oxygen cylinder does not use an anti-backfire device or a special hose clamp.

9. No brazier is used when working at height, or there is no restricted area below.

10. Use power tools or work with fire when flammable objects are present in the surrounding environment.

11. Smoking near flammable and combustible material storage points without necessary warning signs and no-smoking signs.

4. Scaffolding Safety

1. The scaffolding has no label, and there is no inspection date on the back of the label.

2. The springboard is not fully paved and cannot meet the construction needs. The lack of springboard causes holes.

3. The springboard binding wire is too thin, the springboard binding method is incorrect, and each springboard is tied separately.

4. The setting position of the up and down ladder is incorrect and conflicts with the construction workpiece.

5. The ladder should only be installed at the platform and should be more than two steps beyond the platform.

6. The skirting boards are not installed correctly, and the skirting boards are not installed on all sides of the platform.

7. The cracked springboard head was not fixed with wire binding.

8. The ground on which the mobile scaffolding is erected is uneven.

9. A wooden ladder was found in use at the scene.

5. Hoisting safety

1. The crane operator leaves the crane while the hoisted object is suspended in the air.

2. Crane operators are prohibited from leaving the cab without personal PPE.

3. There are no warnings or safety warning signs in the operating radius. Workers move around the lifting area.

4. The lifting command personnel do not have flags, whistles, or sign language.

5. Do not use the tail rope for hanging objects or the tail rope used is too short.

6. Incorrect use of slings: lifting angular objects without using protective measures. The sling does not use snap connections.

7. The staff passes under the hanging objects, lifts the hanging objects, and processes them under the hanging objects.

6. Electrical Safety

1. Power tools are not regularly inspected and equipment inspection labels are posted.

2. Non-electricians perform wiring and repair power tools without permission.

3. There is no regular inspection and timely detection and replacement of failed switching appliances.

4. The damaged power cord of the power tool has not been bandaged and insulated in time.

5. The switch box bracket is not firmly installed and cannot be placed firmly when used on site. Sometimes it is dumped on the ground for use. During use, the door of the switch box is not closed, and the fixed distribution box does not fill out the daily inspection record sheet and post detailed information. Contact signs and check color codes.

6. Cables are installed in a messy manner, without using insulated S hooks or tripod brackets, and the lines passing through roads and passages are not protected or the installation height is too low, not less than 4.5 meters or with eye-catching safety warning tapes. .

7. The damaged electrical socket was not replaced in time, and the circuit breaker or socket in the switch box was not firmly fixed.

8. The protective shell of the lighting device is broken and the glass cover is missing.

9 The installation location of the distribution box is inappropriate and lacks good operating space.

7. Excavation operations

1. The safe distance between the excavator and the edge. (1.5-2m)

2. Flag bearers are not provided as required.

3. Roadblocks were not set up in time on the edge of the excavated foundation pit.

4. There is no suitable safe passage for personnel to enter the foundation pit for work and no measures to prevent the foundation pit from collapsing.

5. When the staff was working in front of the loader, the loader did not turn off the generator.

8. Civilized Construction

1. The work site was not cleaned up in time after the operation was completed.

2. The materials at the construction site are arranged in a chaotic manner, and the materials are not stored in categories and stacked neatly.

3. The on-site access is occupied by construction materials.

4. The on-site lines/air pipes are not hung 2 meters high or measures are taken to prevent passers-by from tripping.

5. There are no garbage bins on site, or the garbage in the garbage bins is not cleared in time.

6. Scaffolding steel pipes and wooden boards were not stacked in the designated place in time.

7. No drip trays or anti-leak trays are used in areas where water or other liquids may leak/overflow, and chemical liquids that leak/overflow on site are not dealt with in a timely manner.

8. Gas bottles were randomly discarded on site and were not stored in designated locations as required.

9. Tools and Equipment

1. Electrical tools are not regularly inspected and color identification labels are posted.

2. The damaged power cord of the power tool has not been bandaged and insulated in time.

3. Use self-made tools for work.

4. The welding machine is not grounded when in use, and the terminals are exposed.

5. The protective covers of compressor belts/discs/grinders and grinders and other rotating parts are missing.

6. High-altitude working tools are placed randomly without using tool bags. The tools can easily fall and injure people.

7. The feet of the A-frame ladder do not have anti-slip treatment, or the top layer and the following two floors of the A-frame ladder are used for work. When working, no one is holding the ladder; work is done with your back to the ladder.

8. Personnel move the scaffolding while standing on it.

10. Tools, materials and chemicals

1. Gas cylinders should be stored in gas cylinder cages by category, labeled by name and posted on the gas cylinder cage together with the MSDS ; Oxygen and acetylene cylinder cages must be posted with "No Smoking" signs and equipped with fire extinguishers;

2. Empty bottles and full bottles should be distinguished, empty bottle and full bottle signs should be hung, and two iron chains should be used Or use brown rope to bundle empty bottles and full bottles separately;

3. Gas cylinders are used without pressure reducing valves

4. Carts should be used to transport gas cylinders. If the road conditions are not suitable for pushing the cart, two people should carry it, and no one person should carry it on the shoulder;

5. The gas cylinder must be placed vertically, and the gas cylinder must be firmly tied to the fixed point with an iron chain or brown rope. Tie the middle and upper part of the gas bottle, and do not tie the mouth of the bottle;

6. Try to keep a distance of 6 meters between oxygen bottles and acetylene bottles, and 10 meters away from the fire source;

7. Paint must be Stored in a designated chemical warehouse, with name signs, fire prevention signs, MSDS posted at the door of the warehouse, and fire extinguishers equipped;

8. Paints used on site every day must be stored away from fire points and Set up warning tapes, post name signs, fire prevention signs, MSDS, and be equipped with fire extinguishers. The designated chemical warehouse must be recovered after get off work;

9. Empty paint buckets and other chemical containers on site Buckets must be covered with lids and bottle caps in time, and must be returned to the chemical warehouse every day. Empty chemical buckets and empty bottles are prohibited from being discarded on site;

10. When paint buckets are used for other purposes, such as holding buckles When installing parts, bolts, water or garbage collection, the remaining paint in the paint bucket must be cleaned, and the fire prevention signs must be polished or covered. At the same time, signs must be posted, such as "tool bucket" and "trash can";

11. The templates and timbers transported to the site for use must not have nails, and the nails must be removed;

12. The templates and timbers must be placed on site in squares and stacks;

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13. One piece of the demolished formwork and wood must be removed, the nails on one piece must be removed, and they must be stacked neatly; they must be transported away from the site in a timely manner.

14. Chemicals must be stored in designated chemical warehouses, and name labels and chemical safety data sheets (MSDS) are posted at the door of the warehouse;

15. Chemicals used on site every day For chemicals, the on-site storage point should be surrounded by warning tapes, and name labels and MSDS should be posted, and the designated chemical warehouse must be taken back to the designated chemical warehouse after get off work;

16. Chemical containers must be covered with lids, even if The same requirements apply to empty barrels;

17. When transporting and storing chemicals, you should refer to the MSDS requirements, and acid and alkali are prohibited to be placed together; when transported by vehicle, chemicals should be placed stably and not stacked. Check whether the container mouth is sealed;

18. Chemicals should be stored in secondary protective containers to prevent dripping. It is prohibited to place chemical containers directly on the ground.

19. Each team must stack materials neatly and clean up garbage in a timely manner.

11. Confined Spaces

1. All restricted spaces must have a "Confined Space, Unauthorized Entry Prohibited" sign, and the entrance manholes must be closed and taped. Block;

2. The work permit, gas test record form and personnel entry and exit registration form should be hung at the entrance of the confined space;

3. The confined space needs to be prepared for ventilation, Passed gas test, 12V lighting;

4. Entrants and guardians must receive restricted space entry training and put the label on the helmet;

5. Confined space entrance Rescue facilities must be set up at the place, such as setting up a tripod, hanging pulleys, and pulling a rescue rope. One end of the rescue rope must be fixed outside the restricted space, and the other end must be fastened to the safety belt of the person entering;

6. The entering wire must be It is insulated from metal and hung neatly to prevent people from tripping;

7. Guardians must wear reflective vests, and operations in confined spaces are prohibited without guardian supervision.

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