I. Pile foundation construction process precautions:
1, all operators, operators must wear helmets, not wear slippers to work, not work after drinking.
2, special equipment operators must be licensed, and copies of special equipment operating certificates should be posted on the rig in a conspicuous position.
3, the drilling rig into the field before the construction site must be leveled and filled, to ensure that the drilling rig in normal operation does not occur under the phenomenon of tilting or overturning.
4, the rig before the start of operations, you must check whether the components are intact, whether the brake is sensitive, whether the wire rope is broken, and so on. Only after passing the inspection can the drilling operation be carried out. In the drilling operation is to regular maintenance of the drilling rig.
5, the drilling rig multi-purpose switchboard distribution box should be intact, and locked, set up a person to manage. All mechanical equipment must be firmly and reliably protected grounding, leakage circuit breaker action sensitive.
6, the mud pool must be excavated in the technician's designated location, the mud pool must be set up around the perimeter of the safety fence, height not less than 1.2m, and hang the relevant safety warning signs.
7, burn the hammer, measure the depth of the hole and take slag samples, can not be operated under the hammer operation, you must first drop the hammer to the ground, and then start the operation.
8, when the rig is in trouble and needs maintenance, the hammer should be dropped to the ground first, and then cut off the power supply, and then carry out maintenance.
9. The completed piles should be backfilled in time to prevent accidents, and the piles that can't be backfilled in time should be enclosed by safety nets and put up warning signs.
II. Electricity safety:
1, the drilling rig construction must implement three-phase five-wire, three-pole power distribution and two-pole protection, "a machine, a gate, a leakage, a box," the provisions of the construction of electricity and do a good job of safety warning signs.
2, the distribution box to have special management, special maintenance. Signature of the submitter Signature of the submitter Note: This form is in duplicate, one copy of which will be kept, and the other copy will be handed over to the team for retention. Bridge drilled pile safety submission Page: 2/3 Name of construction unit Name of unit project Part of submission Huangzhuang Bridge Pile foundation of CCTC Sanjian 33rd Engineering Agency Submission time Month of year Type of work Submission content 3, lighting fixtures used on site must use three-core rubber cables, the lampshade must be connected with yellow and green to protect the zero line, installation of leakage switches, the handle should be used as insulators, the connection must be firm, and the installation position is far away from flammable and explosive substances. Explosive substances.
4, it is strictly prohibited to pull wires and electrical equipment. Non-operating electricians are not allowed to engage in electrical work.
5, the mechanical equipment must be done to protect the ground.
6, power distribution box and switch box should be installed correctly, firmly, mobile power distribution box, switch box should be installed on a solid support. Fixed distribution box and switch box lower and ground height should be greater than 1.3m, less than 1.5m; mobile and ground distance should be greater than 0.6m, less than 1.5m.
Three. Reinforcing steel processing plant safety measures:
(a) mechanical equipment operating requirements: reinforcing steel processing plant machinery and equipment, including steel bending machine, cutting machine, straightening machine, welding machine and lifting and hoisting equipment, each device must be in accordance with the provisions of the operation of the equipment to implement the equipment operating procedures and safety marking signs must be complete, the electrical equipment must be set up to protect the grounding. Safety regulations for the use of electric welding: Before the welding work starts, you should first check whether the welding machine and tools are in good condition and safe and reliable. Such as welding tongs and welding cable insulation is not damaged places, the welding machine shell grounding and welding machine contact is good. It is not permitted to start operation without a safety check. The welding machine should be placed in a dry place with good insulation.
1, before use, check whether the primary and secondary wire insulation is good, whether there is a protective cover at the wiring. Welding tongs are intact, whether the outer shell has zero protection. Confirm that there is no problem before use.
2, in the humid working environment, in order to prevent electric shock, must wear insulating shoes, feet padded with rubber or other insulating padding, the best two work in turn, in order to look after each other or guardianship.
3, in the case of electrified, in order to be safe, the welding pliers shall not be clamped in the armpit to move the workpiece to be welded or the welding cable hanging on the neck, neck.
4, in the change of welding joints, replacement of weldments need to be reconnected to the secondary circuit, replacement of the insurance device, the welder needs to be overhauled in the event of failure, or transfer of workplace to move the welder, as well as the completion of the work or temporary departure from the work site, the power supply must be cut off. (ii) Personnel training: workers must be trained before entering the site to improve the safety awareness of the operators, who should consciously comply with the basic requirements of site safety; site technicians to investigate and remove hidden dangers on site in a timely manner to ensure site safety and orderly construction. Signature of the submitter Signature of the submitter Note: This form is in duplicate, one of which will be kept, and the other will be handed over to the team for retention.
Four, steel cage lifting safety:
1, steel cage must be strictly in accordance with the requirements of the drawings made, steel cage reinforcement must be welded firmly, reliable, to ensure that the lifting process will not be damaged, and by the quality inspection engineers and supervisory engineers to check the qualified, before entering the lifting process.
2, steel cage lifting must be carried out before the handover inspection, site manager, foreman, technician to organize the steel production team (or operator) and responsible for lifting the team (or operator) to carry out on-site handover inspection, lifting team should be on the reinforcing bars of the cage, the lifting point of the welding of the part of the situation to be strictly inspected. After passing the inspection, both parties shall sign and confirm. The quality and safety of reinforcing cage after confirmation shall be the responsibility of the lifting team. It is strictly prohibited to put down the hole without qualified inspection, such as: protective layer thickness and other accessories that do not meet the technical requirements of the reinforcing cage. Otherwise, the hoisting team (or operator) shall be fully responsible. 3, the crane must be qualified by the local safety performance inspection, crane operators must be licensed.
4, before hoisting must carefully check the safety of wire rope, spreader, its safety insurance coefficient must be greater than 3.5 times the weight of the hoist, wire rope knots, loose strands, broken wire, corrosion and wear more than 10% must be replaced by a new one.
5, lifting point selection must be strictly in accordance with the implementation of technical instructions. Technical advice is not clear, the lifting point should be selected from a single section of the top 1/3 of the cage within the range of the main bar, and the free length of the cage above the lifting point is not more than 3 meters.
6, rebar cage down hole must be detected by the hole detector to meet the technical requirements before lifting down hole. Reinforcement cage down hole should be lifted in sections, the length of each section does not exceed the effective lifting height of the crane, and does not exceed 15 meters.
7, due to lifting, welding and other reasons, caused by the collapse of the steel cage can not go down, need to be lifted out of the cage to check or clear the hole, must be truncated in sections and lifted out.
8, crane lifting operation, the operation radius can not have people stay.
V. On-site management:
1, in the process of pile foundation construction, on-site safety management personnel must increase on-site safety hidden danger investigation to ensure on-site safety and civilized construction.
2, the above measures shall be strengthened in the construction process, if the above safety problems occur many times in the construction process, and do not rectify or rectification is not in place, the site will be given the appropriate penalties.