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What are the major hazards in the construction site?
1, foundation pit with excavation depth exceeding 2.5m (inclusive), foundation trench (trench) with 1.5m (inclusive); Or the excavation depth of foundation pit is less than 2.5m, and the excavation depth of foundation trench is less than1.5m. However, due to complicated geological and hydrological conditions or surrounding environment, it is necessary to support and dewater the foundation pit (trench); Blasting excavation of foundation pit (groove).

2. Manual digging pile; Open caissons and caissons; Underground excavation engineering.

3, template engineering.

All kinds of tool template engineering, including sliding mode, climbing mode, large template, etc. Formwork support system for horizontal concrete members and formwork engineering for special structures.

4, lifting machinery, lifting engineering.

Installation, inspection, jacking and dismantling of material lifting equipment (including various suspenders, hoists, derricks, etc.). ), tower crane, construction elevator, bridge erecting machine and other construction lifting equipment; All kinds of hoisting works.

5, scaffolding engineering.

Floor-standing steel pipe scaffold; Wooden scaffolding; Attached lifting scaffolding, including integral lifting and sectional lifting; Cantilever scaffold; Portal scaffold; Hang scaffolding; Hanging basket scaffold; Unload the platform.

Extended data

The construction unit shall prepare a list of major hazards in engineering construction safety, and submit it to the construction administrative department or its entrusted construction engineering safety production supervision institution together with the materials for examining the conditions for safe production when the project starts after being audited by the enterprise and confirmed by the engineering supervision unit.

If the construction plan is changed due to the change of construction drawing design or the influence of construction conditions, the construction unit shall timely supplement and improve the major hazard sources added after the change of construction plan, and submit them to the construction administrative department or its entrusted construction project safety production supervision institution after being audited by the enterprise and confirmed by the project supervision unit.

The construction unit shall publicize the major construction safety hazards in a prominent position on the construction site, and the publicity contents shall include the list of major construction safety hazards and the types of possible accidents. Hang warning signs in the eye-catching position of each major hazard source for construction safety.

The general contractor and subcontractors shall prepare construction plans for special projects with high risks.

Among them, the construction scheme of earthwork blasting engineering such as deep foundation pit engineering, underground excavation engineering, tall formwork engineering, aerial work engineering of 30m and above, deep-water operation engineering of large rivers, hoisting engineering, attached lifting scaffolding engineering, blasting demolition of urban houses and structures shall be demonstrated and examined by experts.

And according to the expert argumentation review opinions to improve, signed by the technical director of the construction enterprise, chief supervision engineer, through the relevant departments of the trial run safety production conditions review, can organize the implementation.

Baidu Encyclopedia-Identification, Control and Management of Major Hazard Sources of Building Safety in Hunan Province