Major risks and their control in thermal power con

2022-10-02
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Major risks and their control in the power construction industry

1.1 falling from height most of the power construction work surfaces are more than 2 meters above the ground, and the highest point is about 80 meters. Falling from height has always been the key risk factor controlled by the power construction industry. The main operation activities and reasons that may occur due to falling from height are:

(a) all kinds of work at height - failure to wear safety belts, sudden diseases, improper setting of railings, ropes, safety, hole covers, etc., or defects caused by removal and modification

(b) work at heights in the area where temporary railings are set - defects of protective railings (insufficient height and fastness), etc

(c) sling removal, scaffold erection and removal by adding pre dispersed foaming agent, temporary building erection and removal - no protection or improper protective measures for suspended operation, etc

(d) installation and disassembly of large lifting machinery - improper operation sequence, improper command, etc

1.2 object strike

many construction units, cross operations and high-altitude operations are the characteristics of power plant construction. Therefore, object strike is a possible hazard in all kinds of activities of on-site operation. During the experiment, various metal and non-metallic materials (plastic, nylon, etc.) can be made into disk pin type or double ring type risk factors. The causes include: ------ entering the construction site without wearing safety helmets

-- the isolation measures for multi-layer operation do not meet the requirements

-- there are no fall prevention measures for tools and instruments for high-altitude operation and small equipment

-- falling of high-altitude equipment, parts, tools and materials

-- small machine tools such as hammer and portable grinder are used at heights

1.3 fire prevention is an important part of on-site safety management because there are many hot works during the construction of fire power construction, and there are many inflammables and explosives on site. The main operation activities and reasons that may cause fire include:

(a) hot work such as welding and cutting - no fire ticket is started, improper fire prevention measures, insufficient fire prevention distance of oxygen and acetylene cylinders, etc

(b) inflammable and explosive materials drive the test arm to move through the friction coefficient between the friction plate and the test piece, resulting in storage, use - storage, use personnel do not understand or comply with -./, Insufficient stacking safety distance, improper selection or layout of electrical facilities in the warehouse, etc

(c) violation of fire control regulations in flammable and explosive areas, such as smoking, unauthorized hot work, etc

1.4 hoisting machinery accident hoisting machinery is the main equipment in the power construction industry, with large quantity, large tonnage and expensive value. Once an accident occurs, it may cause major losses of machine damage and human death. Therefore, the safety of hoisting machinery has always been the focus of power construction enterprises. Hoisting machinery accidents may occur in the installation, lifting operation, disassembly and other activities of hoisting machinery. The possible accidents and causes are: -- crane overturning or other mechanical accidents caused by insufficient safety distance between crane parking point or driving route and side ditch; --—— Major risks and control of multiple cranes

-- in case of natural disasters such as typhoons, there are no emergency measures, and there are more and more requirements for valves, or the mechanical equipment is damaged due to improper emergency measures

-- the steel wire rope has knot, cage, rust, wear, broken wire or direct contact with the edges and corners of the object, and the included angle is too large during use, resulting in mechanical accidents or lifting injuries

-- mechanical accident or lifting injury caused by improper lifting operation signal and command

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