Dangerous points in the construction of thermal po

2022-08-07
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Dangerous points in the construction of electric power construction (transformation) project Abstract: Ruzhou electric power transformation project has begun. How to do a good job in the safety management during the construction of electric power construction (transformation) project is the key factor for the smooth progress of the transformation project, and it is also an important part of the safety production management of Ruzhou Electric Power Bureau in 2005. In order to better achieve the pre control, control and in control of safety production, the analysis and setting of dangerous points before construction is particularly important

key words: the construction danger point of electric power construction and transformation project Ruzhou electric power transformation project has begun. How to do a good job in the safety management during the construction of electric power construction (transformation) project is the key factor for the smooth progress of the transformation project, and it is also an important part of the safety production management work of Ruzhou Electric Power Bureau in 2005. In order to better achieve the pre control, control and in control of safety production, the analysis and setting of dangerous points before construction is particularly important. 1. Face up to the necessity of setting dangerous points. The dangerous points of engineering construction are important parts that affect the safety of personnel and equipment, endanger the normal operation of electricity and endanger the environment. The safety measures usually taken in the early stage of construction are very limited in the actual operation process, because these safety measures lack the expected scheme of the construction site and do not comprehensively analyze the possible temporary changes, resulting in blindness and randomness in the implementation process, thus losing operability. 2. Grasp the difference between control and setting of dangerous points. There are the following aspects in the overall dangerous points of electric engineering: ① urban public facilities and ancillary facilities; ② Offices of government agencies, social organizations, schools, enterprises and institutions; ③ Shopping malls, supermarkets, free markets and other crowded areas; ④ Residential areas and family buildings. The phased dangerous points in the construction process are set in stages according to the project progress and the requirements of the construction process specifications. While ensuring the overall pre control of the whole project, the setting of dangerous points in each construction stage shall be predicted in advance according to the site conditions. 3 division of dangerous points in the process of phased construction the division of engineering items in the construction management of electric power engineering has not been formally standardized so far. Which items are the ordinary maintenance of single work is particularly important. The divisional and sub divisional works in the project need to be gradually standardized through practice in the actual work. According to the usual practice, the power transmission project can be divided into: foundation engineering, tower assembly engineering, stringing engineering, accessory installation engineering, lightning protection and grounding engineering, commissioning before the startup of the whole system and stability test after the startup. In fact, every power transmission project is closely related to the power transformation project. Electrical engineering involves many construction and transformation of medium and low voltage projects. To understand the setting of dangerous points during the construction of each sub project, it is necessary to clarify the relationship between these sub projects in 7. Digital timekeeping: 1 second to 99 minutes. (1) Dangerous point setting of foundation works. Some of the construction scope of the electrical engineering is located in the living center of the downtown block, and various pipes under the surface are complex. When excavating the foundation, there are many pedestrians and vehicles around the construction base level, so it should be set as a dangerous point, take protective measures around the construction base level, and set eye-catching construction signs. After foundation excavation, public pipes under the surface and various pipelines laid by residents themselves may be staggered, which is difficult to identify in detail. This construction stage should be set as a dangerous point, and emergency measures for the construction scheme should be taken. After the foundation pit is formed, protective measures shall be taken to prevent vehicles and pedestrians from entering the foundation pit by mistake and causing accidents. (2) Dangerous point setting of pole and tower assembly and erection works. The construction scheme for the preliminary preparation of pole and tower assembly shall be formulated according to the environment of the construction site, and different schemes suitable for the actual operation on site shall not be used everywhere. When mechanical hoisting is used for assembly, the stability of each part of the construction machinery is very important, and strength calculation shall be carried out when necessary. The construction site of pole and tower assembly shall be set as a dangerous point, so as to achieve unified dispatching, command by a specially assigned person, cooperate with the road traffic management department, and do a good job in the evacuation of pedestrians and vehicles. The backfill compaction after tower assembly must be compacted layer by layer. Before the stringing project is started, temporary stay wires shall be set in the central area of downtown entrance and busy road sections as far as possible, and protective measures shall be taken for temporary stay wires. After the completion of tower assembly, the parts that should be provided with anti loosening measures must be provided with anti loosening cards or anti-theft bolts according to the design regulations. In particular, in areas with large traffic of vehicles and pedestrians, anti loosening measures should be taken in time. It is not appropriate to go back to these measures when the overall project is about to be completed. (3) Dangerous point setting of stringing works and accessory installation works. The overlapping part between the stringing work and the accessory installation work is not obvious. During stringing, the cross arm, hoop and other accessories have been installed in place and are interspersed with each other. However, the instrument can be used for wiring engineering, which is the key point of the overall project, especially for overhead insulated lines. The requirements for wire laying and tightening process are high. Compared with previous engineering projects, it is the first application of new materials and processes. The following aspects should be set as engineering dangerous points for stringing and accessory installation: ① conductor spreading. When laying conductors in urban sections, it shall try to avoid the peak period of pedestrian flow and vehicles. During the laying process, it shall be watched by sections to avoid endangering the safety of vehicles and pedestrians. Due to the complexity of buildings and ancillary facilities in the urban area, the caretaker shall pay attention to the wire entanglement in buildings and ancillary facilities when the wire is laid. During the laying of overhead insulated conductors, conductor damage shall also be avoided. Individual parts close to buildings and auxiliary facilities shall be protected from conductor damage. ② Erection of crossing frames. Due to the complexity of the construction environment in the urban area, it is necessary to set up a crossing frame in the stringing construction. When the crossing frame is erected at the traffic artery, the cooperation of the traffic management department shall be obtained. The crossing frame shall be erected firmly, the space shall be used reasonably, the road shall be occupied as little as possible, and its stability shall be checked. Protective fences shall be set around, and eye-catching signs shall be set at the far points. ③ Conductors span more power supply points and power lines of different voltage levels. There are many power lines with different voltage levels in the urban area erected with the same tower at the intersection. Before construction, it is necessary to distinguish how lines of different voltage levels are connected, identify the direction of power supply points, and confirm the positions of various interconnection switches and section switches. The special alloy scheme for high-end construction equipment shall be treated differently. During the construction, the crossing

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