2.4.2 review the safety assurance system of the component production unit and the construction unit, the preparation of each special construction scheme and expert demonstration, as well as the measures for safe production and civilized construction, and track, inspect and supervise the implementation.
The components mentioned in this key point include concrete prefabricated components and steel structure components produced in the factory.
2.2.2 safety hidden danger factors such as component lifting points, tower cranes and wall embedded parts of construction machinery, scaffold tie-in, concrete pouring and component support shall be fully considered together with the construction unit to facilitate component production and subsequent construction, and measures to ensure safety in the construction process shall be put forward.
1.2 the prefabricated buildings mentioned in this key point include prefabricated concrete structure buildings and prefabricated steel structure buildings.
The installation personnel can approach the components only after they are lowered to the height of 1m within the placement position.
Irrelevant personnel are strictly prohibited to enter.
shall be inspected regularly and irregularly.
three Key points of process control 3.1 component storage 3.1.1 appropriate stacking method shall be selected according to the type of components and the number of stacking layers shall be specified.
3.2.10 mobile (mobile) hoisting vehicles must meet the requirements and pass the annual inspection by relevant departments.
2.3.4 operators such as hoisting commander, cable driver, crane driver and steel member welding must obtain corresponding special operation post certificates.
The hoisting process shall be stable without deflection, swing and torsion.
2.3 the construction unit shall establish and improve the safety assurance system according to the characteristics of prefabricated buildings, prepare relevant special safety schemes, fulfill the approval procedures and carry out technical disclosure in time.
2.4.3 Supervise the component installation process, check the safety and technical disclosure of construction management personnel to operators in key processes such as component hoisting and node connection, and implement on-site supervision on key processes and key parts such as component hoisting, component node connection, and connection between fabricated structure and cast-in-situ structure.
3.1.2 the position of cushion block fulcrum shall be set reasonably to ensure the stable storage of components, and the fulcrum shall be consistent with the lifting point.
3.2.2 Conduct written disclosure to the hoisting workers, and it is strictly prohibited for the hoisting personnel to stay, play, rest, etc.
3.2.4 the number and position of lifting points shall be determined by calculation, and the connection of lifting appliances shall be reliable.
The subcontractors shall obey and cooperate with the management of the general contractor to jointly implement the on-site safety production work.
It is strictly prohibited to hold components directly at high altitude.
3.2.5 After lifting the member for 300mm, stop the member, check the state of steel wire rope, spreader and member, and slowly lift the member only after confirming that the spreader is safe and the member is stable.
2.2 the designer shall specify the structural type, assembly rate, component parts, component types, safety and reliability of structural practices between components and between components and main casting in the construction drawing design documents.
It is strictly prohibited to suspend the hoisting components in the air for a long time.
The hook can be removed only after the components are in place or firmly welded.
100) and standardize and guide the construction safety supervision of prefabricated buildings in the province, these key points are formulated in accordance with the construction law of the people’s Republic of China, the regulations on safety management of construction projects, the provisions on safety supervision of housing construction and municipal infrastructure projects, etc.
2.4.5 if potential safety hazards are found during construction, rectification shall be ordered; If major potential safety hazards are found, the construction shall be ordered to stop; If it refuses to rectify or stop construction, it shall be reported to the construction unit and the supervision organization in time.
2.1.2 the cost of safe production and civilized construction measures shall be fully allocated according to the construction characteristics of prefabricated buildings.
3.1.3 the storage site shall be flat and solid, and drainage measures shall be taken.
3.2.7 the direction of components shall be changed by cable wind rope at high altitude.
3.2.8 when hoisting large components, thin-walled components or components with complex shapes, spreaders such as distribution beam or distribution truss shall be used.
It is strictly prohibited to use modified vehicles for hoisting operation..
one point four Encourage the introduction of third-party service institutions to carry out safety inspection, guidance, education and training for prefabricated building construction.
in the hoisting area for non working reasons.
3.2 component hoisting The component stacking area is surrounded by a circle of shaped protective railings as the hoisting area, and warning signs are set outside the site.
Measures shall be taken to ensure that the position of main hook of lifting equipment and the center of gravity of lifting appliances and components coincide in the vertical direction.
At the same time, reliable cushion blocks shall be set between components.
2.2.3 The design disclosure shall be well done, the characteristics, assembly difficulties and safety prevention and control points of the prefabricated building of the project shall be introduced to the project construction, construction and supervision units, and suggestions to ensure construction safety shall be put forward in combination with the design drawings.
In case of major changes related to structural safety, assembly rate change or use function, the design unit shall strictly check and inform the construction unit to send the modified documents to the original review organization for review.
3.2.9 during daily management, special slings, slings, shaped tool supports, supports, etc.
2.3.2 Experts must be organized according to regulations to demonstrate the special scheme for the following two situations: first, a special construction operation platform for prefabricated buildings with new materials, new equipment and new processes; Second, divisional and subdivisional works with greater risk exceeding a certain scale.
2.4.4 The key points of daily side station and patrol inspection shall include the preparation work of the construction unit before hoisting, the arrival of management personnel during hoisting, the employment of operators with certificates, the implementation of protective measures for edge operation and relevant auxiliary facilities, etc.
3.2.6 when lifting components, no one is allowed to stand under the components.
two Safety responsibility of participating units 2.1 construction unit The design disclosure shall be organized, and the design unit shall make the disclosure according to the assembly characteristics of the project, and form the minutes of the design disclosure meeting.
2.2.4 provide on-site service.
1.3 the Provincial Department of housing and urban rural development is responsible for the quality and safety supervision and management of prefabricated buildings and the construction of information supervision system in the province.
3.1.5 it shall be ensured that the storage frame of prefabricated wallboard and wallboard with doors and windows is solid.
2.4 the supervision unit shall prepare the supervision plan and supervision implementation rules according to the construction drawing design documents and relevant specifications and standards, combined with the characteristics of prefabricated buildings, and implement them after approval.
3.2.3 slings and lifting equipment shall be selected according to the shape, size, weight and operation radius of components.
The competent departments of housing and urban rural development of the local people’s governments at or above the county level and the quality and safety supervision institutions entrusted by them shall be specifically responsible for the quality and safety supervision and administration of prefabricated buildings within their respective administrative areas.
When the construction drawing design documents involve major changes related to structural safety, assembly rate change or use function, the original construction drawing review organization must be entrusted to re review and report to the competent department of housing and urban rural construction for re filing.
When preparing the special chapter of structural design description, special design requirements shall be put forward for possible major risks.
Entrusted by the Provincial Department of housing and urban rural development, the provincial construction project quality and safety supervision and administration bureau implements the quality and safety supervision and management of prefabricated buildings and the construction of information supervision system.
Key points of construction safety supervision of prefabricated buildings in Hainan Province 1 General 1.1 in order to implement the requirements of the implementation opinions on vigorously developing prefabricated buildings (qiongfu [2017] No.
2.3.5 construction management personnel and labor personnel shall be organized to watch prefabricated building construction safety warning education films, practical skills videos, etc., carry out special safety education and training, and make training records.
3.1.4 Components shall not be mixed and stacked with other building materials and equipment to prevent injury accidents caused by mutual influence during handling.
2.3.3 A safety agreement shall be signed with the subcontractor (Supplier) to clarify the safety responsibilities and obligations; Review the qualification of subcontractors, the setting and staffing of work safety management organizations; Coordinate and urge all subcontractors to cooperate with each other.
