Mud worker safety technical disclosure

A, masonry construction:

1. When excavating earthwork, keep the operating distance between two people at 2~3m, and excavate layer by layer from top to bottom. It is forbidden to use the method of digging a hole.

4. When digging ditches and foundation pits, the slope should be graded according to the soil quality and the instructions of the site construction personnel. The excavated soil shall be piled at the edge of the pit and groove outside 1m, and the pile height shall not exceed1.5m.

[14] When building a foundation, we should check and always pay attention to the change of foundation pit soil and whether there is cracking. The stacking materials shall be more than 1m from the edge of the pit and groove. When the foundation pit needs retaining wall support, the operator should set ladders up and down, and it is forbidden to climb and jump, and the materials are not allowed to collide with the support.

4. When the wall masonry height exceeds 1.2m, scaffolding shall be erected. When it is more than one floor or more than 4m high, the inner scaffold must be hung with a safety net outside the wall, and the outer scaffold should be tied with protective railings before operation.

5. When building an external wall with an internal frame, the frame plate should be 500px lower than the external wall, and a safety net should be hung outside the wall as required.

[6] Bricks stacked on scaffolding shall not exceed three skins, and anvil shall not be stacked at the corner of the shelf. Except for the operation floor, the upper and lower leather shelves are only allowed to pile up sporadic materials, and multi-layer stacking is not allowed.

Once, when building a wall at a high place, the rotary anvil should face the wall. After the work is finished, clean up the broken bricks and mortar on the scaffolding and brick wall to prevent falling and hurting people.

⒏ It is forbidden to stand on the wall brick to do bricklaying, hanging lines, scraping seams, checking the verticality of the big corner and cleaning the wall.

Pet-name ruby are not allowed to decorate stone on the top of the wall or shelf, so as not to shake the wall and affect the quality or stone fragments fall and hurt people.

⒑ It is not allowed to build on the wall above the chest reluctantly, so as to avoid safety accidents caused by collision and collapse of the wall or accidental falling on the stone.

5] Don't throw stones down. When carrying stones up and down, scaffolding should be firm, and anti-slip strips and handrails should be nailed.

5] In the construction of cornice and hole, the operator should operate outward to avoid falling on the air. Don't sit on cornices, external walls and other dangerous parts to rest.

⒔ When working high above the ground, you can't use bricks to pad the elevated slab, and you can't stand on the shelf with bricks to operate.

Second, the concrete construction:

1. When pouring concrete into the foundation pit or hopper by car, measures should be taken to stop the car, and the handle should not be pulled back too hard.

4. When transporting concrete with tic-tac-toe frame, the bucket handle shall not extend out of the crane frame, and the car shall be stable. Only when the crane spider stops on the floor can people enter the cart inside the crane spider.

[14] used for pouring concrete chute and string tube joint must be connected firmly. The operating part should have protective railings, and it is not allowed to stand directly on the edge of the chute for operation.

4. When pouring concrete for frames, beams and columns, an operation console should be set, and it is not allowed to operate directly on the formwork or support.

5. When casting arch structure, the arch feet on both sides should be symmetrical at the same time; Protective measures should be taken for pouring ring beams, ponchos and balconies; When throwing the dustbin, the hole should be closed first, and temporary scaffolding should be laid to prevent people from falling.

[6] Rubber shoes should be worn when using the vibrator. Wet hands should not touch the switch. The power cord must not be damaged or leaked. Wires should be overhead and switches should be supervised.

After the concrete mixer is running, no one is allowed to put tools into the bucket to clean materials. When the feed hopper rises, no one is allowed to pass or stay under the hopper.

⒏ When the concrete machinery stops working, the rising hopper should be safely inserted or hung with a safety device.

Technical disclosure of woodworking safety

I. General provisions:

1. The setting of workbench and machinery should be reasonable and stable, the workplace and passageway should be unblocked, and materials and semi-finished products should be piled up in piles, which will not affect traffic.

4. You are not allowed to wear gloves when operating woodworking machinery to prevent gloves from being involved in machinery and causing accidents.

3. Wood chips and shavings in the wood mold workshop should be cleaned up every day. Smoking and hot work are prohibited in the workshop.

Second, the shuttering and ripping:

1. Support with wood. The material should be peeled and the top should be sawed flat. Rotten and twisted materials shall not be used. Do not use miscellaneous materials with large bending and small tail diameter. The diameter of the tail of the top bracing shall be not less than 200px within 4m, not less than 250px within 5m and designed above 5m.

4. The top bracing shall be provided with the first horizontal bracing at the height of 1250px above the ground, and one shall be added every 2m in the future. Horizontal brace should be set vertically and horizontally.

13. The splint at the top bracing joint shall not be less than three sides, the splint shall not be less than 50×8×62.5px, and the adjacent joints shall be staggered.

4. The ground at the bottom of the bracket should be leveled and compacted, and padded with boards, and bricks are not allowed. The wedge with high bottom should be nailed firmly, and the wedge should not be padded too high (preferably 2 pieces).

5. wood truss formwork should be strictly inspected, and serious deformation and bolt looseness should be repaired in time.

[6] shuttering shall be carried out in the next working procedure, and the next working procedure shall not be carried out before the template is fixed. It is forbidden to climb up and down with tie rods and brackets.

Once for more than 4m high column template, must be firm around, to set up the workbench when operating, below 4m high can use horse stool operation.

⒏ Independent beam formwork shall set up temporary workbench, and shall not stand on column formwork and walk on beam bottom formwork.

Pet-name ruby when two people carry the template to cooperate with each other, work together. Transfer templates and tools shall be lifted by means of transport or tied with ropes, and shall not be thrown about.

⒑ A large number of templates and other materials shall not be piled up on the scaffold.

5] horizontal brace, brace, etc. Shall not be placed on the door window frame and scaffolding. The diagonal braces and tie rods in the middle of the channel should be located at a height of 1.80 meters.

5] if you need to stop in the middle of the template, support, lap, stigma sealing plate, etc. It should be nailed firmly to prevent falling accidents caused by holding or stepping on the air.

⒔ adopt portal frame, steel pipe and other supporting templates, and set the level and bracing as required.

5. If there are reserved holes in the template, cover the holes after installation. The reserved holes on the concrete slab shall be covered after formwork removal.

5] template removal should be approved by the construction technical personnel. Homework should be carried out in sections in sequence. It is forbidden to pry, smash, pry or fall over a large area. Loose and hanging formwork shall not be left before shutdown.

[6] Dismantle the formwork of cornices, balconies and other dangerous parts. There should be a shelf, safety net or safety belt under the template, so as to make the template fall on the shelf and safety net as little as possible. A small number of templates that fall on shelves and safety nets should be cleaned up in time.

Once before ripping, fences or warning signs should be set around, and important passages should be guarded by special personnel, and no one can enter.

⒏ The order of template removal should be from top to bottom, from inside to outside. First, remove the horizontal support and diagonal support, and then remove the formwork support. The beam should dismantle the side formwork first, and then dismantle the bottom formwork. Dismantling personnel should stand on one side, not under the formwork. Several people should pay attention to the safe distance between them at the same time to ensure safe operation.

Pet-name ruby dismantled thin web beam, crane beam, truss and other prefabricated templates, should be supported with the demolition, to prevent the collapse of components.

⒛ The removed templates shall be transported to the designated place for stacking or cleaning in time to prevent nails from hurting people.

Three, woodworking machinery:

1. Circular saw:

(1) The operating platform shall be stable, the saw blade shall not be continuously missing or multi-toothed, and the nuts shall be tightened. The circular saw should have a protective cover, not a reverse switch, but a inching switch.

⑵ The operator should stand on one side of the saw blade, and it is forbidden to stand on the same straight line with the saw blade, and the arm should not cross the saw blade for operation.

(3) feeding must be close to the backer, and it is not allowed to use too much force. When encountering a hard segment, push it slowly, and the material should be 375px away from the saw blade. It is not allowed to pull it by hand.

(4) When dealing with old materials, nails, cement slurry, soil and sand must be removed first.

5] When sawing short materials, push rod should be used and pick-up hook should be used. It is forbidden to saw wood outside the radius of circular saw.

[6] Don't touch the saw blade with your hands before it stops, and don't push the wood to force the saw blade to stop.

Once the motor shell and the iron shell of the switch should be protected by zero or grounding, and the leakage protection switch should be installed.

4. Hand drill:

(1) Before use, check whether the power supply insulation is good or not, whether there is any damage, the wires must be overhead, insulating gloves should be worn when operating, and a leakage protection switch should be installed when using.

2 according to the nameplate correctly use hand electric drill. If there is electricity leakage or the motor temperature is too high, the speed suddenly slows down and there is abnormal noise, stop using it immediately and hand it over to an electrician for maintenance.

(3) Scaffolding should be set up for aerial work, and safety belts should be hung for work in dangerous places. Pay attention to the operation before and after the work to prevent accidents.

(4) When drilling upwards, the drill handle can only be propped up by hands or carrying rods, and it is not allowed to be carried by head or shoulders.

5] When the electric drill rotates, it is only allowed to aim the drill handle at the hole position, and it is forbidden to aim the hole position with a hand drill.

[6] After the work, cut off the power supply and put away the wires for reuse.

On-site reinforcement installation safety technical disclosure

1. For manual blanking on site, the tools used must be firm, the chisel and sledgehammer should stand at an oblique angle, and pay attention to people and things in the drop hammer area. Cut short steel bars less than 750px and clamp them firmly with pliers. It is forbidden to hold them by hand, and there is also a protective box outside to cover or face the no-man's land.

4. When many people transport steel bars together, the actions of lifting, falling, turning and stopping should be consistent, and manual transmission should not be in the same straight line. Steel bar stacking should be dispersed and stable to prevent dumping and collapse.

[14] In high altitude and deep pit, when binding steel bars and installing skeleton, scaffolding and. Will be erected.

4. Tie the column and wall reinforcement. Don't stand on the reinforcement skeleton and climb it up and down. Column rebar is less than 4m, and its weight is not big. It can be tied to the ground or floor and erected as a whole. When the column rebar exceeds 4m, a workbench shall be set. Column beam skeleton should be fixed with temporary support to prevent toppling.

5. When binding foundation reinforcement, steel corbel or horse stool shall be placed as stipulated in the construction design to set the upper reinforcement, and the corbel or horse stool shall not be reduced at will.

[6] For binding ring beams, overhangs, external walls and side columns of high-rise buildings, an outer frame or safety net shall be erected. Fasten your seat belt when binding.

Once the steel skeleton is lifted, it is forbidden to stand below. Only when the skeleton drops below the ground 1m, it is allowed to approach, and the hook can be unhooked after the support is in place.

⒏ Hanging cages should be used for lifting short steel bars, cross arms should be added for lifting long steel bars, and wire ropes should be used for binding steel bars, and double binding is prohibited.

Pet-name ruby hanging on the floor when handling, binding steel, should be careful not to approach and collision wires. And pay attention to the safe distance from bare wires (less than 1kv ≥4m, 1- 10kv≥6m).

⒑ Construction lighting should be sufficient at night, lamps and lanterns are not allowed to be hung on erected steel bars or other metal components, and wires should be overhead.

Safety technical disclosure of bamboo scaffold erection

I. General provisions:

1. Material selection: Bamboo that has grown for more than four years, is green, tender, yellow, moth-eaten, rotten, and cracked (more than two knots) shall not be used.

4. Binding: water onion, bamboo, bamboo. Don't tie three at a time

13. Diameter of Phyllostachys pubescens: the effective diameter of the small head of vertical pole, main rail, scissors, throwing support and top support shall be ≥ 175px. Cross arm (small bar) ≥225px.

4. The height of the shelf is less than 24m, and the design scheme should be prepared and approved if it is greater than 24m.

5. The uniformly distributed load on the masonry scaffold should not exceed 270kg/m2, and the uniformly distributed load on the decorative scaffold should not exceed 200kg/m2.

Second, the stud:

1. Setting-out: The foundation within the scaffold erection range shall be smooth and compacted.

(1) according to the builder's disclosure and the characteristics of the building, determine the vertical and horizontal spacing of the vertical pole, stay at the scene, nail bamboo sticks for lofting.

(2) According to the total height, characteristics and structural requirements of the building, determine the step distance of the shelf (should be ≤ 1.8) and the height of the first leather shelf.

2. When the buried depth is 30 ~ 30~ 1250px, and the anvil is laid, the soil is soft or it is difficult to dig a hole, the floor sweeper should be tied.

13. Transverse spacing: 1 ~ 1.2m, and the distance between the inner upright post and the wall is ≤500px.

3. Longitudinal spacing: 1.3 ~ 1.5m (error soil 125px). The vertical pole spacing of the shelf over 15m shall not be greater than1.5m. The external vertical pole shall be higher than the roof1.2 ~1.5m. ..

⒌ Verticality: the corner is ≤250px, and the middle of the shelf is ≤375px.

[6] Lap length of vertical pole: not less than 1.8m, and the joint shall pass through the leather frame. Adjacent uprights in the same frame should be staggered and should not overlap with the top bracing.

⒎ The poling shall be laid on the right side of the top bracing, alternately, and the verticality of the middle top bracing shall be maintained.

Third, the small bar:

The inner end extends out of the inner column 15 ~ 875px, 5 ~ 250px away from the wall, and the outer end extends out of the outer column by more than 500px.

Fourth, the top support:

The top bracing should be vertical, with the big head facing upwards, and tied with three bamboo sticks. The diameter of the small head should be greater than two-thirds of the diameter of the small upright. The upper and lower top bracing should be kept in the same straight line.

V. Ledger:

Set four (the frame width is within 1.2m), and tie them on the inside of the column. Put the joints on the column (on the small bar) and tie them firmly. The upper and lower frame joints shall be staggered, the lap length shall not be less than 1.5m, and the number of binding lanes shall not be less than 4.

Sixth, support:

The corner, both ends and middle of the scaffold are arranged from bottom to top every 15m double span. Scissors should be slightly tied at the head, with the big head pressing the small head. The overlapping length is more than 37.5px, and not less than 5 lanes, which is 45 ~ 30 degrees from the ground. The bottom should be buried above 750px. When it is not possible to bury, lead wires not less than 16# shall be bound at the intersection of vertical poles.

According to needs, longitudinal continuous multi-span bracing can also be set, but its maximum width shall not exceed 6 spans.

Seven, even the wall point and throw support settings:

Under the three-step shelf, a throwing brace is set every 6 ~ 7 vertical poles and buried underground for 750px. For more than three frames, a wall point should be set every two steps and four spans. The commonly used method is to bury 10 ~ 12 # galvanized lead wire in the wall to pull the vertical pole in the frame, and at the same time, use short battens to resist the wall surface (small poles can also be used to top the wall, which can only be sawed off when painting). Even the wall point should be as close as possible to the node of the vertical pole of the shelf to strengthen the stability of the shelf.

Eight, railings:

More than two steps should be set up on the inner side of the external vertical pole, and protective railings and protective nets with a height of 1.0m should be set up. Outside the vertical pole should be tied with protective railings, the height is 1.2 ~ 1.5m, which is higher than the roof.

Nine, scaffolding:

The construction layer shall be covered with scaffolding, and the corners and main rails shall be firmly bound with 16# lead wire. Each construction operation layer shall be paved with scaffolding boards with more than three steps, and the corners and main rails shall be firmly bound with 16# lead wire. The high-rise frame should be covered with a leather frame board every four leather frames for safety protection. Scaffolding must be laid firmly. Scaffolding lap length is not less than 500px.

Gaps more than 500 pixels away from the wall should be protected. One protection method is to use planks, and the other is to use small safety nets for protection.

X. Ramp:

Ramps and platforms should be built for the steps above the third level, and the gradient should be ≤ 1: 3.

Pedestrian ramps are usually the same width as the frame.

4. The width of the conveying chute should not be less than 1.5m, and the slope should be 1: 6. The width of the rotary platform shall not be less than 1.5m and the area shall not be less than 6m2.

13. protective railings and vertical nets with a height of 1m should be set on both sides of the chute and the outside of the overturning platform for protection.

4. Erection method: same as scaffolding, but for the stability of chute, scissors should be set at the periphery and end of both sides of chute. For the ramp attached to the outside of the scaffold (that is, when the external pole of the scaffold is used as the internal pole of the ramp), the setting of the scaffold wall connecting pole should be strengthened. For independent ramps, the wall connecting rods should be encrypted.

5. A bamboo frame without a roof should be provided with a ramp on the roof.

Xi。 Binding:

All steel bar intersections shall be firmly tied with bamboo sticks.

Twelve, street protection:

Scaffolding along the street and in crowded places shall be completely enclosed with protective bamboo basketry or with vertical net. Conditional can use bamboo basketry on the outside of scaffolding, and strengthen the protection of street surface on the basis of fully enclosed vertical net.

Thirteen. Acceptance:

After erection or before use, acceptance and handover procedures must be handled before use.

Safety technical disclosure of mantang scaffold erection

The materials and installation methods used for full-house scaffolding are the same as those of ordinary scaffolding.

1. Poles: the distance between vertical and horizontal poles is ≯2m, the step distance is ≯ 1.8m, the ground should be flat and compacted, and the poles should be buried 30 ~ 30~ 1250px. If it can't be buried, sleepers should be placed under the poles, and sweeping poles should be added.

2. Crossbar: the step distance of horizontal tie rods in vertical and horizontal directions is ≯ 1.8m, and the distance between main bars in the operation floor is ≯ 1000px.

[14] Bracing: diagonal bracing should be set at the four corners, bracing should be set at the four sides, and bracing should be set at every four rows of vertical rods in the middle along the longitudinal direction. Scissors and scissors should be set continuously from bottom to top.

4. Laying of scaffold board: scaffold board height is less than 4m, scaffold board spacing is ≯500px, scaffold board height is more than 4m, and scaffold board should be fully laid.

Technical disclosure on installation safety of feeding platform

1. The feeding platform shall be set independently, the gap between the platform and the derrick shall not exceed 250px, the width of the platform shall be based on the principle of convenient feeding and discharging, and the length shall be ≥ the outside of the hanging fence.

3. Erection materials: Generally, Chinese fir or steel pipes are used for erection, and bamboo can also be used for erection when the bearing capacity is not large (within 300kg) and the height is not high (Hsinchu should be selected). The erection method is basically the same as scaffolding.

3. Usage and structure: it is mainly used as the material inlet and outlet channel of the hanging basket of the grid, and generally no materials are piled up.

The main components are: upright posts, cross bars, horizontal tie rods, scissors, railings, etc.

4. Installation:

(1) The spacing between vertical poles is within 1 ~ 1.5m, and the step distance is 1.5m ~ 1.8m depending on the building height. Each floor of the platform is flat.

⑵ Set a horizontal tie bar every 1 ~ 1.5m high, which can be set at 1.8m high at the channel of the operation floor.

(3) Crossbars: when the platform is laid with bamboo frame boards, the spacing of main crossbars is within 1000px, and when steel wooden scaffolding is used, the spacing of main crossbars is not greater than 1500px.

(4) Pruning: The periphery of the outer column should be set continuously from bottom to top, and the passage can be disconnected at the entrance and exit.

5] Handrails: protective handrails with the height of 1 ~ 1.2m are set around the platform according to regulations. The front is provided with an openable safety door.

[6] Cable wind rope: When the height of the platform exceeds 10m, cable wind rope should be set around it, or it should be firmly fixed on the building, not on the derrick.

Technical disclosure of scaffold dismantling safety

1. Before dismantling the scaffold, the team members should have a clear division of labor, unified command, and concentrate when working. Don't look around joking, put the tools in the tool bag when not in use.

4. Wear personal protective equipment and soft-soled shoes correctly. Please fasten your seat belt when removing dangerous parts (such as pickup).

[14] Before dismantling scaffolding, fences or warning signs should be set around, and the main roads should be supervised by special personnel, and no one can enter.

4. Strictly abide by the demolition sequence, top-down, step by step, not allowed to work at the same time.

5. When dismantling the main rail and bracing of scaffolding, the middle fastener should be dismantled first, and then the two fasteners should be dismantled. The middle operator should get off the pole, not throw it down.

[6] The dismantled scaffold poles, scaffolding boards, steel pipes, fasteners and other materials shall be transferred to the scaffold or hung with ropes, and shall not be thrown downward to avoid injury and unnecessary losses.

Once in the process of demolition, it is best not to change people halfway. If there must be a replacement, the demolition situation should be explained clearly.

⒏ It is best not to interrupt the demolition process. If it is really necessary to interrupt, the demolition part should be handled clearly, and it can be stopped only after it is confirmed to be safe.

Pet-name ruby scaffolding dismantled, frame material should be classified piled up, piled up in a flat place, bedding and good drainage. It is best to put the steel indoors, and the outdoor stacking should be covered. Fasteners, bolts and other small pieces should be cleaned with diesel oil, packed in boxes, bagged and stored indoors for reuse.

⒑ Bending deformed steel members should be straightened, damaged steel members should be repaired in time and painted for reuse, and those that cannot be repaired should be scrapped.

1 1 auxiliary facilities: protective railings with a height of 1m should be set around the feed channel, and ramps or escalators should be set on the upper and lower frames. It is forbidden to climb the scaffold pole up and down.

12 construction load: generally not more than 100kg/m2. If you need to bear a large load, you should take or design reinforcement measures.

Safety technical disclosure of hanging safety net

The quality of safety nets must comply with the provisions of GB5725-35, that is, the overall dimensions are 1.8×6m and 4×6m, and the weight of each net should be less than 15kg/ sheet and more than 8kg/ sheet. Safety nets can be divided into flat nets and vertical nets. The mesh number of the net should be more than 2000 mesh (10CMX 10CM).

First, the flat screen:

The installation plane is not perpendicular to the horizontal plane, and the safety net mainly used to catch falling people and things is called flat net.

1. The flat net should be able to withstand the impact of a simulated humanoid sandbag with a weight of 100kg and a bottom area of 70000px2. The net rope, side rope and tether will not break (tendon rope is allowed to break), and the maximum elongation of impact height of 100m shall not exceed1.5m..

Before the old network is reused, according to GB5725-86, a comprehensive inspection should be carried out and a license certificate should be issued before it can be used.

2. Appearance inspection of the net:

(1) The side length of the net should not be greater than 250px, and the diameters of the side rope, tether and tendon rope should not be less than 2 times of the net rope and should be greater than 7 mm ..

⑵ The reinforcing ropes must be set vertically and horizontally, and the distance between two adjacent reinforcing ropes is between 30 and 30-2500 px. All knots on the net must be firm, and the reinforcing rope should extend out of the side rope 1.2m, which is convenient for splicing and binding between nets or between nets and templates. (or tied with an additional tether).

(3) The old network should be free from damage or other defects that affect the quality of use.

3. The choice of network:

(1) Select the type of net according to the purpose of use and the width of net according to the load height. Vertical net cannot replace flat net, but flat net can replace vertical net.

⑵ When the net width is 3m, the extension width after hanging is about 2.5m, and when the net width is 4m, the extension width after hanging is about 3m.

Installation of net:

(1) Before installation, the net, strut, crossbar and anchorage points must be inspected, and the installation can be started only after it is confirmed.

2 safety net inside and outside should be tied to the ledger, ledger inside should be tied to the embedded reinforcement ring or the inside of the wall (building), and tied to the outside safety net inside ledger. The clearance between the main rail and the wall (or floor) shall be ≤375px. The main reinforcement on the outer side of the net is provided with a vertical pole every 3m, and the vertical pole forms an angle of 45 with the ground. The pole placement should be fixed firmly. For example, when the floor can't be fixed, sweeping poles can be provided, and several poles can be tied together with posts.

(3) The safety net is based on the principle of convenient binding, firm connection, easy unlocking and no loosening after being stressed. When multiple safety nets are connected and used, the adjacent parts should be close to or overlap.

(4) When installing the flat screen, it should not be stretched too tightly, and it should be high outside and low inside (50m outside). When the load height of the net is less than 5m, the width of the net protruding from the building is more than 2.5m, and when it is less than 10m, the minimum width of the net protruding from the building is 3m.

5] When installing near the transmission line, you must first obtain the consent of the relevant departments and take appropriate measures to prevent electric shock, otherwise you may not install it.

[6] The first safety net is usually hung on the second floor (3 ~ 4m high), and then a movable safety net (GB5725-85) is hung every 6 ~ 8m. Multi-storey or high-rise buildings are provided with a fixed safety net every four floors except the second floor.

Once the distance between the net and the surface (or ground) of the object below shall not be less than 3m.

Being hung in the safety net, should consider in advance in the temporary feeding and discharging position should have a retractable safety net. When hanging materials, put away the net and restore it to its original state immediately after use.

5. Use, repair and maintenance:

(1) The safety net must be checked once a week in use, and the sundries should be cleared in time.

(2) After being impacted by a large load, replace the new network in time or check whether there is serious deformation, wear, fracture, falling off of connecting parts, etc. , and then continue to use.

(3) According to GB5725-85, the strength test of the test rope should be conducted once every 3 months (or according to the instructions).

[6] Cleaning of safety net: When cleaning the safety net and entering the safety net, the quality of the safety net must be checked in advance, and the support rod must be firm and safe before entering the safety net. When cleaning, you should grasp the mesh reinforcement with one hand and clean up the sundries with the other. It is forbidden to stand on the safety net to clean up sundries or throw them down with both hands.

When cleaning up sundries, there should be a guardian on the ground, and no one is allowed to enter or fence.

Second, the vertical network:

The installation plane is perpendicular to the horizontal plane (relatively speaking), and the safety net mainly used to prevent people and things from falling is called a vertical net.

1. According to GB5725-85, the breaking strength of side rope and tether of vertical net is not less than 300kgf, the breaking strength of net rope is 150-200kgf, and the length of net destination side is not more than 250px.

4. The hanging net must be straightened and tightened.

3. The maximum clearance between the screen plane and the edge of the surface supporting the operator shall not exceed 375px.

Technical disclosure of electricity safety in construction site

A, electricity management:

1. Temporary electricity utilization must be based on the Technical Specification for Temporary Electricity Utilization on Construction Sites (JGJ46-88), and the construction organization design of electricity utilization must be compiled, and technical measures for safe electricity utilization and electrical fire prevention measures must be formulated.

3. The drawings of the temporary electricity utilization project must be drawn by electrical engineering and technical personnel separately, and shall be used as the basis for temporary construction after being approved by the technical director.

3. The contents and steps of temporary electricity construction organization design:

(1) Make a site survey to determine the position and line direction of the main power distribution box (cabinet) and distribution box.

⑵ Calculate the load, and select the conductor section and the model and specification of electrical appliances.

⑶ Draw electrical plan, elevation and wiring system diagram.

(4) Formulate technical measures for safe electricity use and electrical fire prevention measures.

3. The construction site temporary electricity safety technical documents:

(1) All data of the construction organization design for temporary electricity utilization and modification of the construction organization design.

⑵ Technical disclosure materials.

(3) the temporary electricity engineering inspection and acceptance form.

(4) Grounding resistance measurement record.

5] Regular inspection (complex) look-up table (site monthly report, company quarterly report).

[6] electrician maintenance work record.

5. The installation, maintenance or dismantling of temporary electricity utilization projects must be completed by electricians, and the level of electricians should be adapted to the difficulty and technical complexity of the project.

Second, the electrician:

1. Electricians must undergo professional and safety technical training, and can only operate independently after passing the examination by the municipal labor department.

4. Electricians should master the basic knowledge of electricity safety and the performance of all equipment.

[14] Wear personal protective equipment according to regulations before taking up the post.

4. Stop using the equipment, turn off the power supply and lock the distribution box.

5. Responsible for protecting the load line, zero line (repeated grounding) and switch box of electrical equipment.

6. Mobile electrical equipment must be powered off. Under normal circumstances, live working is not allowed, and a guardian is required for live working.

Once regularly check the power supply lines as required (once a month at the construction site and once a quarter at the company), handle problems in time when found, and make inspection and maintenance records.

You should know the common sense of electric shock first aid and electric fire fighting.

Third, the safe distance and external protection:

External power supply line: refers to any power supply line except temporary power supply line at the construction site.

1. Temporary facilities or objects, shelves, materials and other sundries shall not be built or erected under high and low voltage lines.

2. Safe distance:

(1) The minimum safe distance between the outside of the project under construction (including scaffolding) and the overhead line is not less than 4m, 1 ~ 1kv is not less than 6m, and 35 ~ 1 10kV is not less than 8m. The maximum sag of overhead conductors on the construction site and the minimum distance from the ground shall be ≥4.0m, and the motor vehicle lane shall be ≥ 6.0m.. ..

(2) The horizontal distance between the edge of the boom or the hoisted object and 10kV overhead line is ≥2m.

(3) The minimum distance between the motor vehicle lane and the overhead power line is 6m below 1kv and 7m below 10kv.

13. External protection:

(1) If the safety distance cannot be met, protective measures must be taken, and guardrails, fences, fences or protective nets should be added, and eye-catching warning signs should be hung.

(2) The safe distance between charged body and barrier should be greater than 2375px at 10kv and 2875px at 35kv.

(3) The safe distance from the charged body to the fence (closed) should be greater than 750px at 10kv and greater than 1250px at 35kv.