A, street lamp construction process and safety requirements
1. Survey and design: In the survey and design stage, the design should consider the maintenance safety of future street lamps. Such as: whether there is a high-voltage line near the street lamp, whether there are big trees, how high the street lamp is, etc.
2. Construction positioning: Determine the position of street lamps on the construction site according to the design requirements, considering the traffic safety of personnel on the one hand and the convenience of construction and installation on the other.
3. Dig the pole pit and pour the concrete foundation: When digging the pole pit, pay special attention not to dig underground pipelines, and do a good job of pipeline investigation in advance.
4. Installation of special transformer: The load of installing special transformer should not be too large, but the development of street lamps in surrounding roads should be considered, and the load margin should be reserved to avoid repeated investment. The voltage drop of the line must also be considered, and it should be set in the middle of the road or at the intersection as far as possible. Cement should be paved around the transformer and warning railings should be made to prevent leakage accidents caused by weed growth.
5. Cable laying: Before cable trench is dug, other original pipelines should be investigated to avoid excavation damage. The depth of cable trench should meet the requirements of design standards, and cable anti-theft measures should be taken.
6. Installation of lights on vertical poles: The main safety measures are: (1), placing construction signs and conical piles to divert traffic; (2) Construction personnel should wear safety helmet and reflective clothing; (3) Before construction, the on-site construction technical director shall explain the installation technical requirements and safety measures to each team leader, and each team leader shall arrange the installation technical requirements and safety measures for the construction personnel, and be responsible for them step by step, implement them layer by layer and formulate safety measures. (4) The crane construction is equipped with professional safety personnel who are responsible for directing the hoisting.
7. Cable wiring: Precautions are as follows: (1) Cable joints should be tightly connected, well insulated and sealed; (2) Pay attention to the phase jump color at the line jump to avoid uneven three-phase load caused by wrong line connection; (3) The cable joints in the wiring well should be waterproof to avoid leakage accidents. And hang the cable model, specification and loop number on the cable.
8. Installation of distribution box: Pay attention to the following points: (1) The grounding should be firm and the grounding resistance should be less than10Ω; (2) The electrical connection should be firm; (3) make a safety fence; (4) Hanging electrical safety warning signs; (5) There should be control circuit diagram and cable sign in the box.
9, load debugging: street lamp debugging should use multimeter, megger to detect the line, whether there is a short circuit between phase and ground, whether there is a short circuit between phase and so on; After the test, power is sent in stages to ensure the safety and trouble-free power transmission.
10, light pole adjustment: the light pole adjustment is mainly vertical in all directions, so that the stress of the anchor screw is balanced.
1 1. Welding ground wire and access door: welding shall be firm. After welding, antirust paint and silver powder paint should be applied to the welding place to prevent oxidation of the welding place.
12. Seal anchor screws: all screws and flanges are sealed with cement, and then tiled, with gradient to avoid water accumulation.
13. project acceptance: acceptance shall be conducted according to the requirements of design, project construction and acceptance specifications.
Second, the street lamp engineering construction flow chart
The safety management of street lamp construction must adhere to the policy of "safety first, prevention first", strengthen the publicity and education of safety production, enhance the safety awareness of construction personnel, establish and improve various safety production management institutions and safety production management systems, equip full-time or part-time safety inspectors, organize and lead safety production activities, and ensure the synchronous planning, arrangement, inspection, summary and assessment of production and safety work. Mainly focus on the following contents:
1, personnel management
(1) Organize all construction personnel to carry out safety technology education and training, be familiar with and abide by various technical operation procedures of this type of work, and nip in the bud.
(2) Special type of work personnel should be trained in professional safety skills, familiar with the safety operation skills of their respective machines (aerial work vehicles), and hold relevant certificates.
(3) The safety leading group and full-time (part-time) safety officers must always monitor the safety in production and correct the problems in time when found.
2. Equipment management
(1) All construction machinery, tools, aerial work vehicles and other equipment shall be inspected regularly and signed by the safety officer to ensure that they are always in good condition.
(2) Construction appliances, supporting safety protection facilities and equipment must be kept, maintained and tested regularly according to the management requirements of rules and regulations to ensure safe use.
3, safety measures management
(1) Establish a full-time safety management organization and improve the responsibility system for production safety, which is everyone's responsibility.
(2) Carry out safety technical disclosure seriously, and the construction can be started only after the safety production measures are implemented. In case of personal and equipment accidents, adhere to the principle of "three-no-let-go" and seriously deal with the responsible persons.
(3) When new technologies, new processes, new equipment and new materials are adopted in the construction, corresponding technical measures must be formulated.
(4) Actively carry out safety production labor competition, commend and reward outstanding teams and individuals, and severely punish teams and individuals who violate safety production.
Through the implementation of various construction safety management measures, the management level of construction managers can be improved, so that construction managers can arrange construction scientifically and flexibly according to the actual situation of personnel and equipment, ensure the progress of the project, ensure the quality of the project, ensure the construction safety, improve the construction efficiency, and thus improve the production efficiency.
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