Tower assembly with external stay wire suspension derrick 10.1 Before the construction, the “station shift meeting” shall be carried out in strict accordance with the operation instructions and tower assembly scheme.
The end position of the rope shall be changed timely after each pile is completed.
When the excavation reaches a certain depth, live animals shall be sent to the pit for toxicity test before work every day.
9.3 Foreign matters shall not be inserted into the drive part during the operation of the mixer.
10.2 It is strictly forbidden to use trees and exposed rocks to replace ground anchors..
Fall arresters shall be provided.
When the crane and lift truck are working in the electrified area, the vehicle body shall be well grounded; Check and try out the machines and tools before use.
The rope clamp is set according to the specification.
02 Before human transportation and environmental transportation with poor loading and unloading operations, the transportation route shall be investigated.
2.
7.3 The pumice near the pit mouth shall be removed in advance when the foundation is excavated manually due to loose and falling objects; When throwing earth and stone out of the pit, it shall be prevented from falling back and hurting people; Materials and tools shall not be stacked within 0.8m of the pit edge.
7.4 No measures have been taken for special terrain, such as mud puddles and quicksand pits.
01 The defective tools and instruments shall be checked for their intactness before operation, and unqualified tools and instruments are strictly prohibited from entering the site for operation.
The mixer should be set on a flat and solid foundation; After installation, the front and rear supports shall bear the force, and wheels shall not be used to replace the supports.
The generator (distribution box) and electrical equipment shell shall be well insulated, waterproof and fireproof, and must be well grounded.
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The excavation of mud puddles and quicksand pits shall be carried out with retaining plates or other construction methods to prevent landslides.
03 General part of infrastructure 3.1 Facility defects.
06 The vertical distance of live line conductor caused by electric shock or electric shock due to carelessly touching the nearby live body during construction survey and pit division operation shall be measured with a measuring instrument.
A certain number of blowers shall be prepared before excavation, and oxygen inspection shall be carried out in each pile before commencement of work every day.
When the drilling rig is parked and positioned, the site must be flat and dense.
In case of any fault, stop the mixer for maintenance.
Obstacles on the transportation road must be removed in advance.
The mechanical and electrical equipment of the mixer shall be comprehensively inspected before use to confirm that the mechanical and electrical equipment is complete, well insulated and reliably grounded.
The switch side of the vibrator shall be equipped with a leakage device.
07 Manual hole digging pile foundation operation 7.1 Before earthwork excavation of unknown facilities under the foundation, be familiar with the surrounding environment, terrain and landform, and formulate construction plans and safety measures for special terrain; When excavating in places with underground facilities such as cables, optical cables and pipelines, the consent of relevant management departments shall be obtained in advance, and signs and safety measures shall be taken on the site.
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In order to prevent electric leakage of the vibrator, professional personnel should conduct a comprehensive inspection of the vibrator before operation; The electric vibrator shall use four core rubber cord with good insulation and shall be well grounded.
04 General part of tower erection 4.1 The height of the derrick beyond 2/3 of the tower body to the upper waist ring shall not exceed 2/3 of the full length of the derrick, and the included angle between the supporting rope and the derrick shall not be greater than 45 °.
10.
The switch side of the vibrator shall be equipped with a leakage device.
4.
4.3 In case of manual pile driving due to the misplacement of the anchor sledge hammer, the hammer driver shall not wear gloves and shall stand at the side of the drill man.
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The retaining wall shall be set according to the design requirements when excavating the foundation in the loose soil area.
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The overall bending of the metal holding pole exceeds 1/600 of the pole length, and the local bending is serious, the surface is severely corroded, cracked or desoldered; B.
09 Foundation Casting and Formwork Removal 9.1 The mixer is not firmly installed.
1.
08 Construction of cast-in-place pile foundation 8.1 The drilling platform is not firmly installed.
In order to prevent electric leakage of the vibrator, professional personnel should conduct a comprehensive inspection of the vibrator before operation; The electric vibrator shall use four core rubber cord with good insulation and shall be well grounded.
3.2 Temporary electricity use is not standardized.
It is forbidden to use tape, wire ruler (with metal wire) and other tools to directly measure the vertical distance of live line conductors.
9.2 When transporting concrete and other construction materials, the road should be flat and the roadblocks should be cleared in time.
5.2 If the safe distance is not enough for working in the live area, the height limit and safe distance signs shall be set up in the areas with various voltage levels, and special personnel shall be assigned for monitoring to ensure the safe distance between personnel and vehicles and the live body.
8.3 The steel wire rope of the hammer is broken.
9.4 The vibrator wiring is defective.
When the tower is erected, the grounding wire is connected in time.
4.2 When the tower is erected, the grounding wire is not connected in time.
4.4 The quality of the derrick is unqualified.
When using an electric vibrator, rubber shoes shall be worn, and wet hands shall not touch the switch.
The installation and maintenance of construction power facilities shall be undertaken by electricians with certificates.
7.2 The upper and lower foundation pits shall fall to the bottom and the upper and lower foundation pits shall use soft and hard ladders.
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8.2 Anoxic and toxic working environment 1.
5.3 For special and special operations conducted by unqualified personnel, the qualification certificates of special and special personnel shall be submitted for approval and inspected on site in advance.
Through inspection, the connection point between the steel wire rope and the hammer is checked.
It is forbidden to use the holding pole in one of the following situations: a.
The appearance inspection shall be carried out before the derrick assembly.
05 General part of stringing works 5.1 If the high-altitude personnel do not use the safety belt correctly, the safety belt must be hung on the firm component, and it is not allowed to hang it low and use it high.
2.
For special construction methods, the technical department shall propose safety construction measures, which can only be carried out after approval.
There are cracks, deformed threads or missing bolts on the surface of the derrick cap ring.
Generator (power box) wiring and wiring shall be well insulated and waterproof.
When using an electric vibrator, rubber shoes shall be worn, and wet hands shall not touch the switch.
During the transfer operation, it is not allowed to lose the protection.
It is forbidden to replace the fuse wire with other metal wires.
9.5 The mixer motor has defects.
One machine, one switch and one leakage must be implemented.
