Source: Fujian Supervision Association
Supervise safety inspections
22 key contents
22 key contents
1. Key points of construction electricity supervision and monitoring
1.1 Technical management of safe electricity use
(1) The construction site electricity shall be prepared with a special construction organization design and implemented after approval by the competent department.
(2) Establish safety technical files for temporary electricity consumption at the construction site in accordance with relevant regulations.
(3) The use points are managed by certified professionals with corresponding professional qualifications
(4) The new maintenance electricians, temporary workers, and interns must undergo safety education before taking up their posts, and can only participate in the designated work under the leadership of the formal electrician after passing the examination.
(5) All kinds of electrical equipment should be regularly inspected and recorded.
(6) The grounding device should be regularly inspected and maintained.
(7) On-site electricity must be applied for in advance, approved by the electricity management department, and the maintenance team must be notified for connection.
(8) It is strictly forbidden for non-electricians to disassemble and assemble electrical equipment, and it is strictly forbidden to pull the power supply indiscriminately.
(9) The switch box and switch cabinet of the power distribution room and on-site electrical appliances should be locked.
(10) The electrical equipment should be set up with a clear sign of "strictly forbidden to approach to prevent electric shock".
1.2 Technical requirements for safe use of electricity
(1) The on-site layout of temporary electricity consumption shall be carried out according to the electricity plan of the construction group.
(2) The pitch of the overhead line shall not be greater than 35m, and the line spacing shall not be less than 30m.
(3) The intersection of the cable and the road should be laid in a solid protection pipe, and the two ends of the pipe should extend out of the roadbed for 2m.
(4) When the low-voltage cable needs to be laid overhead, it should be erected along the building, and its erection height should not be less than 2m, the joint should be well insulated, and waterproof measures should be taken.
(5) The high-voltage line protective frame is erected according to the plan.
(6) The erection height of the branch line should ensure that the height of the cable line is greater than 2.5m, and the height of the overhead line is greater than 4m.
(7) The height of on-site lighting is greater than 2.4m, and a safe voltage should be used in dangerous places.
(8) The electrical box should be uniformly numbered, and the lower mouth of the placement height should be higher than 1500px.
(9) The power switch electric box should be one machine, one gate, one leakage, and one box.
(10) Whether there is a reliable grounding device for electrical equipment and mechanical equipment.
(11) The transformer and distribution device meets the requirements of the specification, the power supply adopts the three-phase five-wire system, and the distribution room is equipped with warning signs, fire extinguishers, insulating blankets, insulating gloves, etc.
2. "Three rooms" and "four mouths" protection supervision and monitoring points
(1) Construction personnel must wear safety helmets correctly when entering the site.
(2) The project under construction should be closed with a qualified safety net.
(3) Seat belts must be worn when working at heights of more than 2 meters.
(4) The entrance of the building should be equipped with a handrail, the elevator shaft should be equipped with a protective door, and a flat net should be set up every 10m in the elevator shaft.
(5) Reserve holes and pits to set up reliable protective measures.
(6) A protective shed is set up at the entrance of the passage, and a double-layer protective shed is set up at a height of more than 24m on the construction floor.
(7) Reliable protective railings must be set up on balconies, roofs and other edges.
3. Scaffolding erection supervision and monitoring points
(1) There should be a drainage system for the pole foundation.
(2) The spacing between every two vertical rods in the horizontal direction of the tie point between the frame body and the building is less than 3.6m, and a tension brace point is set every 3.6m in the vertical direction.
(3) Protective railings and safety nets should be set up above the second step.
(4) The shear brace should be set every 9m, and the angle should be 45~60 degrees.
(5) The distance between the poles (24 meters height scaffolding) shall not be greater than 1.8m, and the horizontal height shall not be greater than 2m.
(6) Set up a layer of isolation fence every four steps.
(7) The scaffold should be provided with a climbing ramp, and the entrance and exit should be set up with a passage protection shed.
(8) The four corners of the steel pipe scaffold are provided with protective grounding and lightning protection grounding.
4. Key points of construction machinery supervision and monitoring
4.1 Piling construction
(1) The license for piling machinery is complete and valid.
(2) The ultra-high limit device of the pile driver meets the requirements, and there is no high-voltage line within 5m of the operation area.
(3) The hoisting wire rope is well lubricated, and there is no broken wire exceeding the standard.
(4) The laying of the pile driver walking track should comply with the provisions of the factory manual (click to pay attention to ☞ the official account of the 10 major technical categories of construction).
(5) The contact between the electromechanical power supply wiring and the control system is reliable, and the connecting cable is not damaged.
4.2 Erection of derrick and gantry
(1) The hanging plate ultra-high limit and docking device are sensitive and reliable.
(2) The winch should be fixed firmly, and the rope safety device should be effective.
(3) A group of wind ropes should be set up at 20m, and a group should be added for every 10m.
(4) The broken wire rope does not exceed the standard, does not mop the floor, and should be protected when passing the road.
(5) The floor unloading platform is reliable and the plank is tightly laid.
(6) The hanging plate is equipped with a safety door and a firm baffle on both sides. The frame body is vertical, firmly connected, and the small eye safety net is wrapped.
(7) The steel wire on the rope drum of the traditional system should not be less than three turns.
(8) If the height of the hanging basket exceeds 30m, a double-layer protective shed should be erected.
(9) The floor is marked with the number of floors, and there are signal devices for connecting up and down.
(10) The first wall attachment device shall not exceed 7m, and the height of the rod shall not exceed the top of the derrick.
(11) The frame body should be equipped with lightning protection device.
4.3 Key points of tower crane supervision and monitoring
(1) Each machine shall be equipped with no less than 10 operators (including drivers, cranes, electricians, welders, etc.), and the operators must be certified to work.
(2) The testing institution recognized by the Municipal Construction Commission shall handle the testing and issue a certificate before it can be used.
(3) The staffing of the tower crane during construction should ensure that there is 1 driver, 1 upper commander and 1 lower commander.
(4) The torque limiter is sensitive and reliable, the weight limiter is sensitive and reliable, the rotary limiter is sensitive and reliable, the walking limiter is sensitive and reliable, the luffing limiter is sensitive and reliable, the ultra-high limiter is sensitive and reliable, the hook insurance is sensitive and reliable, and the reel insurance is sensitive and reliable.
4.4 Key points of construction hoist supervision and monitoring
(1) There shall be no less than 10 operators (including drivers, cranes, electricians, welders, etc.) for each construction hoist, and the operators must be certified to work.
(2) The testing institution recognized by the Municipal Construction Commission shall handle the testing and issue a certificate before it can be used.
(3) A protective fence is set around the bottom of the cage.
(4) Double-layer anti-fall sheds should be erected on the three facades around the elevator.
(5) The cab and each floor must be equipped with communication devices.
4.5 Key points of supervision and monitoring of small construction machinery
(1) The mixer and mortar machine must be set up with a special switch electric box, set up an operation protection shed, hang a safety operation procedure card, and pass the acceptance card.
(2) Protective sheds should be erected for woodworking planers and chainsaws, special switches and electric boxes should be set up with complete safety devices, and safety operation procedures and acceptance cards should be hung.
(3) The welding machine should be equipped with a special switch electric box, a no-load step-down device on the secondary side, the power line on the primary side should not exceed 5 meters, the shell should be reliably grounded, and the protective cover on the side of the inlet and outlet line should be equipped with rainproof measures, and the acceptance card should be hung.
(4) Hand-held power tools should be equipped with a switch box, a reliable grounding device, and construction personnel must wear insulated shoes and insulated gloves when operating stone grinding machines, first-class hand-held tools and submersible pumps.
5. Key points of operation platform supervision and monitoring
5.1 Key points of supervision and monitoring of the establishment of the landing operation platform
(1) The bottom is solid and flat, and meets the requirements of construction organization design.
(2) The upright pole, shear brace, and tie knot meet the design requirements of the Shi group, and the tie must be connected with the building.
(3) The operation of the construction face around the protection is tight, reliable and safe.
(4) The escalator is complete, and the passage into the working surface is firm and smooth, without obvious height.
(5) After the operation platform is erected and accepted by the person in charge of the project, the acceptance plate should be hung after the acceptance, and the load limit sign (both inside and outside) can be used.
5.2 Cantilevered steel platform supervision and monitoring points
(1) The shelving point and the upper tie must be set on the building, and shall not be set on other construction equipment such as scaffolding.
(2) The cable-stayed rod or wire rope is provided with two front and rear lanes on both sides of the structure.
(3) 4 designed lifting rings should be set.
(4) There shall be no less than 4 wire rope clips during installation.
(5) After the installation of the cantilever platform is completed, it can be used only after the acceptance of the project leader, and the load limit sign (both inside and outside) can be used after passing the acceptance.
6. Key points of personal protection supervision and monitoring
(1) Wear the helmet correctly and fasten the buckle.
(2) The seat belt is intact, and it is used high and low.
(3) Insulated shoes, insulated gloves, and welders' face masks should be in good condition and used accurately.
(4) Professional construction personnel must be certified to work.
(5) Dangerous operations should be protected by personnel.
7. Key points of supervision and monitoring of special types of work
(1) The full-time safety officer must hold a certificate of training in the construction industry, which is valid for 4 years.
(2) Electricians, welders, and scaffolding workers must hold a certificate issued by the committee, which is valid for 2 years (if the certificate is issued for training in other places, it must be retrained in Shanghai).
(3) The derrick erection operator must hold the lifting derrick erection and dismantling operation certificate, which is valid for 2 years (the scaffolding worker cannot erect the derrick).
(4) Tower cranes, dual-purpose elevators, and lifting commanders are certified to work (each tower crane is equipped with personnel: 1 tower crane driver and 2 lifting commanders).
(5) Small machinery, such as woodworking machinery, mixers, mortar machines and other operating certificates, enterprises can train and issue certificates by themselves, and their validity period is one year.
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8. Key points of foundation pit construction supervision and monitoring
(1) The foundation pit construction plan should be carried out according to the design requirements of the construction group.
(2) The edge of the foundation pit with a depth of more than 2m should be protected.
(3) The pit wall support should be implemented according to the plan, and the environmental monitoring of the foundation pit should be implemented as required, and the maximum deformation and daily deformation of the foundation pit should not exceed the specified limit.
(4) An effective drainage system should be set up for foundation pit construction.
(5) The distance between the pit side load, soil pile and mechanical equipment and the pit edge meets the requirements of the plan.
(6) The upper and lower foundation pits must be set up with climbing measures.
(7) The construction machinery has been accepted, the driver holds the work permit, and the operation area is cordoned.
9. Safety supervision of earthworks
(1) Review of the construction plan before earthwork excavation.
(2) Inspection of safety protection measures for earthwork blasting operations.
(3) The loader operation range shall not be leveled.
(4) When the earthwork is backfilled, before the tamping machine works, the power cord should be checked for defects and leakage, whether the mechanical operation is normal, whether the machinery is protected by electric switches, the machinery is not allowed to run with illness, and the operator should wear insulating gloves.
10. Safety supervision of excavation engineering
(1) Pipes, cables and other buried objects found in excavation should be reported in a timely manner, and should not be disposed of without authorization.
(2) When digging, we should pay attention to the stability of the soil wall, and when it is found that there are cracks and collapses, the personnel should leave immediately and report in time.
(3) The machinery should be parked on a solid foundation, if the foundation is too poor, reinforcement measures such as ramp plates should be taken, and earth-moving vehicles should not be close to the foundation pit to drive parallel to prevent the collapse from overturning.
(4) The bottom cleaning workers who cooperate with the digging shovel are not allowed to work under the mechanical rotation radius.
(5) Unloading to the car should be carried out after the car is stopped, and the bucket is prohibited from crossing the cab of the car.
(6) A 1.2m high guardrail must be set around the foundation pit, and a certain number of temporary construction stairs must be set up.
(7) When excavating the foundation pit, there must be feasible drainage measures to avoid water accumulation in the foundation pit and affect the soil structure.
(8) Before the excavation of the foundation pit, it is necessary to find out whether there is a pipeline under the foundation pit, and to grasp the geological conditions, so as to consider the unexpected emergency measures (special circumstances such as quicksand) in the excavation process.
(9) The excavated earthwork should be stacked and transported in strict accordance with the organizational design, and should not be piled on the outside of the foundation pit, so as not to cause the ground to be overloaded and cause soil displacement or support damage.
(10) The excavation machinery shall not collide with the support during construction, so as not to damage or strain the support.
11. Formwork support system supervision and monitoring points
(1) The outer diameter of the steel pipe made of support material shall not be less than ф48×3.5mm steel pipe, and there shall be no cracks.
(2) The column is stable, including the support height, the horizontal support between the columns, the spacing of the longitudinal and transverse scissor supports, and the spacing of the vertical rods (longitudinal and transverse), which meet the requirements of the scheme.
(3) The operating environment is more than 2m high place molding, and the operator must have a reliable foothold and perfect protective measures.
(4) Personnel entering the construction site must wear safety helmets, and personnel working at height must wear safety belts and should be fastened.
(5) For the installation and removal of formwork above 5m, scaffolding should be erected and protective railings should be set up to prevent operation up and down on the same vertical plane.
(6) For the installation and dismantling of high-altitude and complex structural formwork, there should be practical safety measures in advance.
(7) In case of strong winds above level 6, outdoor high-altitude work should be suspended, and the construction site should be cleaned after snow, frost and rain, and work should be carried out when it is slightly dry and not slippery.
(8) When two people carry the template, they should cooperate with each other and work together. Transfer formwork, tools should be lifted after the means of transport or rope are fastened, and shall not be thrown indiscriminately, when the combined steel formwork is dismantled, someone should respond up and down, and the steel formwork and accessories should be assembled and disassembled, and transported with it. It is strictly forbidden to throw it from a height, and when the mold is removed from a high altitude, there should be a special person to command, and mark the work area below, surround it with ropes and red and white flags, and suspend the passing of personnel.
(9) A large number of formwork and other materials shall not be stacked on the scaffolding.
(10) When there is a reserved hole on the template, the hole should be covered after installation, and the reserved hole on the concrete slab should be covered after the template is removed.
(11) Set up scaffolding or operating table for high-altitude work, use ladders up and down, do not stand on the wall to work, do not stand on the bottom mold of the girder to walk, and the operator is strictly forbidden to wear hard-soled shoes and heel shoes.
(12) It is forbidden to use 125px×250px wood when dismantling the formwork, and the steel formwork is used as a standing board.
(13) When the steel mold and the machine parts are transported vertically, the lifting point must be strictly required to prevent falling and injuring people, and the formwork top support arrangement must meet the construction load requirements, especially in the case of basement hoisting, basement roof template, support also needs to consider the large mechanical walking factor, the number of supports per square meter, must meet the load requirements, when removing the formwork, the temporary scaffold must be firm, and the removed template must not be used as a scaffold. The scaffold board must be firmly and flat, and there must be no empty head board to prevent falling from the air.
(14) It is forbidden to use 125px×250px wood for jacking
(15) Supports and tie rods shall not be erected on doors, windows, cabinets and scaffolding, and the diagonal braces and tie rods in the middle of the passage shall be located at more than 1.8m.
(16) When assembling and disassembling the formwork, the operator should stand in a safe place to operate, take the initiative to avoid hanging objects, and enhance the safety awareness of self-protection and mutual protection.
(17) When carrying out the construction of SBS coil hot adhesive method, the site should be equipped with fire extinguishing facilities in accordance with the requirements of the construction plan, and the storage of liquefied gas cylinders and tanks should meet the safety requirements.
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12. Reinforcement works
(1) The work of steel bar breaking, batching, and bending should be carried out on the ground, and are not allowed to be carried out at high altitude.
(2) When binding the suspended girder steel bar on site, it is not allowed to stand on the formwork and operate, but must be operated on the scaffold board. When binding the steel bar of the independent pile head, it is not allowed to stand on the steel bar and bind, and it is not allowed to wear wood, pipes, and steel formwork in the steel bar as a standing slab.
(3) Lifting the steel skeleton, it is forbidden to stand below, and the skeleton must be lowered to below 1m of the formwork before it is allowed to approach, and the hook can be removed only after the support is in place.
(4) When lifting the steel bar, the specifications must be unified, and the length is not allowed to be uneven, and it is not allowed to lift at one point.
(5) Before using the cutting machine, it is necessary to check whether the mechanical operation is normal, whether there is leakage, and flammable materials are not allowed to be stacked behind the cutting machine.
(6) When working at height, the steel bars shall not be stacked on the formwork and scaffolding board, and the tools, steel hoops and short steel bars shall not be placed on the scaffold board at will, so as not to slide down and hurt people.
(7) Regardless of whether the steel skeleton is fixed or not, it is forbidden to walk on it, and it is forbidden to go up and down from the steel hoop on the column.
(8) When the steel bar is cold drawn, protective facilities must be installed at both ends of the cold drawn line, and it is strictly forbidden to stand or cross at both ends of the cold drawn line, touching the steel bar that is being cold drawn.
(9) The on-site welding machine must be grounded to ensure the safety of the operator, and the welding wire and welding tongs should be reliably insulated.
(10) When indoor arc welding, there should be an exhaust ventilation device. Arc baffles should be set up between the welders' operation sites to prevent arc light from stabbing their eyes.
(11) Welders must wear protective clothing. Contact welders should wear colorless glass glasses, and arc welders should wear protective masks. When welding, the welder should stand on a dry wood mat or other insulating mat.
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13. Concrete works
(1) When stringing the track board, the two ends need to be placed smoothly and fixed with nails, and every 1.5m below the lane board needs to be added with a cross flute and top brace, and the high-altitude string jump above 2m must be equipped with a protective railing, and the lane board should be frequently cleaned with garbage, stones, etc. to prevent slipping and falling.
(2) When pouring concrete with tower crane and hopper, the commander of the bucket personnel and the tower crane driver should cooperate closely, and when the tower crane puts down the hopper, the operator should stand steady to prevent the hopper from touching people and causing falling.
(3) Before using the vibrator, check whether the power supply and leakage protector power supply line is good, the power line shall not have joints, and whether the mechanical operation is normal. When the vibrator moves, it should not hard-pull the wire, let alone drag it on the steel bar and other sharp objects, so as to prevent the wire from being cut or broken and causing electric shock casualties.
(4) When the derrick basket is lifted or lowered, the derrick safety door, head and hand are not allowed to reach into the derrick, and the gondola can only enter the gondola to work when the gondola is stable.
14. Wall engineering
(1) When the height of the masonry of the wall exceeds 1.2m above the ground level, scaffolding should be erected, and when the height is more than 1 floor or more than 4m, the scaffold must be supported with a safety net, and the outer scaffold should be equipped with a protective railing and a foot guard before masonry.
(2) The amount of material stacked on the scaffold shall not exceed the specified load, the stacking body shall not be too high, and the operator on the same scaffold board shall not be superhuman.
(3) It is not allowed to do marking, scraping and cleaning the wall or checking the vertical of the big corner on the top.
(4) It is not allowed to use unstable tools or objects to operate on the surface of the scaffold board, and it is not allowed to superimpose another layer on a layer of scaffold at will without reinforcement, and the scaffold board is not allowed to have an empty phenomenon, and it is not allowed to use 5cm×10cm wood or steel formwork as a human stander.
(5) When chopping bricks, you should face inward, and pay attention to the broken bricks jumping out and hurting people.
(6) Cages and ropes used for vertical transportation must be checked frequently, and problems must be repaired in time.
(7) During winter construction, there is frost and snow on the scaffold, which should be cleared before it can be operated on the shelf.
(8) When crossing up and down in the same vertical plane, a safety partition must be set, and the operator below must wear a safety helmet.
(9) It is not suitable to pull the wind rope on the masonry, not to hang the hanging, and not to be used as the support point of other construction temporary facilities and supports, if it is really necessary, effective measures should be taken.
15. Door and window installation engineering
(1) Install the upper window sash and do not throw things downward. Pay attention to the steady feet when working.
(2) It is not allowed to step on the window frame, or place scaffolding boards and hanging heavy objects on the window frame.
(3) The base of the woodworking machinery must be stable, the parts must be complete, and the rotating and dangerous parts of the machinery must be installed with protective devices according to the regulations. It is not allowed to arbitrarily change the coarse fuse. In particular, the cutterhead part of the machine should be strictly inspected, and the cutterhead screws must be tightened to prevent the blade from flying out and hurting people.
(4) Smoking or using open flames is strictly prohibited in woodworking workshops, wood warehouses and wood storage yards. Waste materials should be cleaned up in time and cleaned up to avoid accidents.
(5) Doors and windows shall not be placed flat, they shall be erected, and their inclination shall not exceed 20 degrees, and herringbone stacking shall not be allowed.
16. Steel structure and iron parts production engineering
(1) When many people carry materials and workpieces, there should be a special person to command, concentrate, act in unison, take care of each other, lift and handle lightly, so as not to hurt people, and the road should be cleared in advance.
(2) The use of various machinery, to carry out the inspection of the first part, the trial operation is normal, before the formal use, the operator must understand the performance of the machinery and safe operation procedures.
(3) There shall be no flammable and explosive materials within 5m of the place of electric welding.
(4) In order to prevent electric shock, the relevant electrical safety regulations must be observed.
(5) Gas welding and electric welding should comply with the safety operation procedures.
17. Component hoisting project
(1) Before hoisting, check whether the mechanical rigging, fixtures, lifting rings, etc. meet the requirements and should be tested.
(2) There must be a unified command and a unified signal when hoisting.
(3) Personnel working at height must wear safety belts, and the rooting place of the safety belt must be safe and reliable.
(4) Aerial workers are not allowed to drink alcohol and make jokes at high altitudes.
(5) Wear smart clothes for high-altitude work, and it is forbidden to wear hard-soled shoes, high-heeled shoes, plastic-soled shoes and shoes with spikes.
(6) The crane walking road and working place should be solid and flat to prevent subsidence and accidents.
(7) Comply with the "ten do not lift" regulations on lifting and hoisting.
18. Steel structure hoisting project
(1) When the profiled steel plate for pouring the floor slab is not arranged after the column and beam installation, in order to facilitate the convenience of the construction of column bolts and so on, an appropriate number of walkway plates need to be laid on the steel beam.
(2) In order to facilitate the construction of the connecting column, an operating platform should be set up at the pile connecting place, and the platform is fixed at the top of the lower section column.
(3) In order to facilitate the construction of climbing, the climbing ladder should be fixed on the steel column before hoisting the column. In order to facilitate the fastening of high-strength bolts and welding of column and beam joints, hanging basket scaffolding needs to be installed below column and beam joints.
(4) The electrical machinery and equipment used in construction shall be grounded, and the use of damaged wires and cables shall not be allowed to prevent equipment leakage. The cables of electrical equipment and machinery used in construction shall be concentrated together and raised with the construction surface of the floor step by step, and the distribution box shall be set up separately on each floor for the construction of each floor.
(5) For high-altitude construction, when the wind speed reaches 15m/s, all work must be stopped.
(6) Attention should also be paid to fire prevention during construction, and necessary fire extinguishing equipment and fire guardians should be equipped.
19. Shelf engineering
(1) Before erection, the screening of steel pipes should be strictly carried out, and the rods with serious corrosion, thin walls, and serious bending and cracking should not be used.
(2) In addition to the provisions of the scaffolding foundation, the drainage treatment must be done.
(3) If the high-rise steel pipe scaffold seat stands on the channel steel, it must be connected and protected by a ground pole, and the ordinary scaffold pole must be protected by a base.
(4) THE TIGHTENING FORCE DISTANCE OF ALL FASTENERS SHOULD REACH 45~55N.M.
(5) The small crossbars of the same façade should be staggered and set up, and the upright bars should be straight up and down at the same time.
(6) The length of the oblique rod should not be connected with butt fasteners, and two rotary fasteners should be used to connect the length in a overlapping way, and the lap distance should be greater than 0.4m.
(7) A warning area must be set up at the demolition site, and eye-catching warning signs must be hung. It is strictly forbidden for operators to pass through the warning area or continue to organize construction under the scaffolding. Ground guardians must perform their duties. High-rise scaffolding should be dismantled and should be equipped with good communication devices.
(8) All personnel working at height shall strictly implement the demolition process requirements and abide by safety discipline in accordance with the regulations of working at height.
(9) After the demolition personnel enter the post, they should first inspect, reinforce the loose parts, remove the materials, objects and garbage blocks left in the layer, and all the cleaned objects should be safely transported to the ground, and it is strictly forbidden to throw them at high places.
(10) Dismantle according to the anti-procedure of erection, namely: safety net ~ vertical fence ~ pad fence ~ protective railing ~ joist ~ diagonal rod ~ wall rod ~ large crossbar ~ small crossbar ~ vertical pole.
(11) It is not allowed to dismantle the façade or dismantle the upper and lower steps at the same time. Conscientiously do one step at a time, one stroke at a time.
(12) All rods, fasteners and other objects conveyed to the ground should be stacked neatly according to categories.
(13) Set up a safety net from the second floor and set up every four floors, and the safety net must be intact, firm and reliable.
20. Coating engineering
(1) The construction site should have good ventilation conditions, such as in the construction of the site with poor ventilation conditions, it must be constructed only after the installation of ventilation equipment.
(2) When painting or spraying paint that is harmful to the human body, you need to wear a protective mask, and if it is harmful to the eyes, you need to wear closed glasses for protection.
(3) In order to avoid accidents caused by static electricity accumulation, a grounding wire device should be installed for painting or spraying the tank.
(4) Smoking is not allowed when ingredients or extracting flammable products, cotton yarn soaked in clear oil, varnish and oil, and hand towels are not allowed to be thrown away.
(5) Pay attention to fire prevention at the construction site, and strictly prohibit smoking and the use of electric stoves.
(6) The paint material library should be properly ventilated and equipped with fire-fighting equipment.
21. Ventilation works
(1) When melting tin, the tin liquid is not allowed to touch water to prevent splashing. Hydrochloric acid should be properly stored.
(2) In the construction of wet basements, low-voltage bulbs below 36V should be used for lighting.
(3) Using a scissor machine, tools and other items are not allowed to be placed on the upper knife holder, the iron sheet is adjusted, the feet cannot be placed on the pedal, and the hand is not allowed to reach into the gap of the board when cutting.
(4) Operate the rounding machine and sewing machine, and the hand shall not directly push the workpiece.
(5) When folding the square, it should cooperate with each other, and keep a distance between the material and the folding machine, so as not to be injured by the overturned steel plate and counterweight.
(6) The rigging used to hoist the air duct should be firm, and the rope should be added to stabilize it when hoisting, and a safe distance should be kept from the electricity body (click to pay attention to ☞ the 10 major technical public accounts of the building).
22. Plumbing
(1) When the temporary power supply is pulled, the wires and aisles must be protected by steel pipes, and they must not be dragged and pulled indiscriminately, resulting in the wires being pressed by the vehicle.
(2) The electrical equipment in the electrical box should be intact and equipped with a special leakage protection switch.
(3) All mobile electrical appliances should be protected by leakage switches, the wires should not be damaged, the skewer head should be complete, and it is strictly forbidden to use the skewer head and use the wire directly into the skewer seat.
(4) When simmering the elbow, first check whether there are explosives in the coal. The sand is to be dried to prevent the vapor from causing an explosion.
(5) When installing pipes on high ladders and scaffolding, it is necessary to pay attention to the firmness of the foothold. When using a pipe wrench to install the pipe, you should hold down the pliers with one hand, hold the pliers handle with the other hand, and slowly wrench, not hold the pliers handle with both hands and pull it vigorously to prevent the teeth from slipping and falling out of control.
(6) When digging pipe trenches or deep pits on site, retaining plates should be added according to soil conditions to prevent collapse, such as poor soil quality, when the pipe pit is full of 1m, support or slope should be used, and obvious signs should be set up in the trench or deep pit. When excavating near the cable, it is necessary to contact the relevant departments in advance and take safety measures before construction.
There are still a lot of safety supervision contents in the construction process, and the above main parts are put forward here. We will add to this as the project progresses. We will strictly review and monitor the safety technology of each division, each sub-project and each process in the construction process. Strive to detect problems in time and prevent accidents, so that the safety of production can be 100% controlled.