1. The scope of wind farms is large, wind turbines are widely distributed, and the dangerous and harmful factors caused by natural factors include:
1) Hurricane: the height of the wind turbine tower is large (the first phase of the wind turbine The hub height is 65 meters and the hub height of the second phase wind turbine is 80 meters). If the tower foundation does not meet the design requirements, the connecting parts of each tower section are. loose and the inspection is not timely, in the event of a strong hurricane, the tower will collapse easily. Dangerous factors such as excessive shaking, overturning, breaking or even collapsing the frame.
2) Lightning strike: The wind turbine tower is tall and located on the dam plateau, so it is more likely to be struck by lightning if the lightning rod and protection device lightning fail or go undetected. mayFailure to do so in time will result in the lightning protection device not being installed correctly. It is easy to cause accidents due to lightning, resulting in dangerous factors such as fire and electric shock.
3) Earthquake: Earthquake is an unpredictable natural disaster. If the generator set is chosen to be placed in an earthquake-prone area, the tower foundation does not meet the design requirements or the construction quality is not qualified. In the event of an earthquake, the consequences of the disaster will be catastrophic, easily causing the devastating collapse of towers, generators, etc.
4) Low temperature risk: The construction project is located in a cold area, with the lowest temperature reaching -34.8°C. In case of low temperatures, equipment repair and maintenance should be carried out on theground. upper part of the tower. If cold protection measures are not in place, it is easy to freeze the hands and feet of maintenance personnel, leading to falls from high places. Generator blades are subject to thin ice clinging to the blades in low temperature and high convection conditions; at low temperatures, the metal components of the equipment will undergo crystal transformation and even cause rupture, leading to unbalanced mechanical operation; condense when affected by cold air. Dangerous factors such as machine malfunction can lead to equipment breakdown.
2. Main sources of danger. According to Article 96 of the additional provisions of Chapter 7 of the “Work Safety Law”, sources of major danger refer to units that produce, transport, use or store goodss dangerous for a long period or temporarily, and the quantity of dangerous goods equals or exceeds the critical quantity (including premises and installations). From this regulation, the concept of sources of major danger has three levels of meaning:
1. A major hazard source is a type of location or facility (collectively called a unit); p>2. A source of major danger is a place or facility where dangerous goods are produced, transported, used or stored;
3. A source of major danger is a place where the quantity of dangerous goods is produced, transported. , used or stored is equal to or greater than the critical quantity or facility.