In building construction, there are many aerial work. Among them, falling from a height and hitting by objects are one of the key points of accident prevention. The so-called aerial work refers to any work that may fall at a height of more than 2 meters (including 2 meters) from the reference plane of falling height, which is called aerial work. Because of the small activity area, much air around, strong wind and many vertical cross operations, aerial work is a very complicated and dangerous work, and a slight negligence will cause serious accidents. Working at heights must strictly implement the safety technical specifications for working at heights in construction.
I. Types and causes of accidents in working at heights.
First, aerial workers lack due safety technical knowledge and self-protection awareness; Second, the safety protection facilities and equipment for high-altitude operations are not perfect; Third, the material strength of the kicked object is not enough; Fourth, when the aerial work moves, it is empty, slippery and unstable; Fifth, protective measures were not taken in accordance with the regulations during the three-dimensional vertical crossing operation; Sixth, when working at height, people fall due to collision, electric shock, wind blowing, etc.
Second, aerial work must be carried out in strict accordance with safety regulations. First of all, workers working high above the ground should wear tight overalls, non-slip shoes, helmets and seat belts; Second, when encountering heavy fog, heavy rain and strong winds of magnitude 6 or above, aerial work is prohibited; Third, tools that are not used for aerial work should be put into tool bags and taken as needed. Commonly used tools should be tied to the body, and unnecessary tools and removed materials should be slid to the ground with a tether, and cannot be thrown down to avoid falling and hurting people. After the operation, it should be cleaned up in time and transported to the designated place to prevent falling and hurting people.
Three, cross operation safety operation specification. Working at heights at different levels (heights) in the construction site space at the same time is called crossover operation. Its safety operation specification is:
1. Operators are not allowed to work on the same vertical plane when exchanging up and down. The lower working position must be outside the range where the upper working object may fall; When it cannot be met, an isolation protective layer should be set between the upper and lower parts. When the height of a high-rise building exceeds 24 meters, cross operation is required. Double protection facilities should be set up.
2. It is forbidden for lower-level workers to rest on protective railings and platforms.
Four, climbing operation safety operation specification. At the construction site, with the help of climbing equipment or facilities, aerial work under climbing conditions is called climbing operation. Its safety operation specification is:
1, operators should go up and down from the specified passages, and are not allowed to climb or jump between non-specified passages such as balconies.
2, up and down the ladder, must face the ladder, hands firmly, not holding objects to climb.
3. It is forbidden to work on balcony railings, steel bars, pipe racks, templates and their supporting rods.
4. It is forbidden to walk and work along the roof winding, purlin and unfixed objects.
5, personnel scaffolding should take a dedicated channel up and down, it is forbidden to climb the scaffolding bar up and down. When working or walking on scaffolding, pay attention to the probe board under your feet.