On the electrical construction site management

[Abstract] With China's rapid economic development, accelerating the pace of urban construction, high-rise buildings springing up, to create three-dimensional city provides a strong protection, but because some of the city fire safety awareness within the site is not enough, the daily fire management is not place and other reasons, led to the construction site when the fire occurred. strengthen the electricity safety management is extremely important.

[Keywords:] the construction site, measure electricity, electrical management

Although electricity is part of the construction site temporary configuration, but there should be a temporary view, should be strictly in accordance with the "construction site temporary electrical safety specifications," the formal requirements of the electrical design, strictly according to specifications to implement to enhance the safe use of construction workers awareness, strengthen the power management to achieve safe production requirements.

1 Note the following aspects should be safe use of electricity measures.

1.1 Basic power supply system
Works at the construction site temporary power supply system of the basic form: the power transformer and power generators are used directly grounded neutral point of three-phase four-wire system, power supply 3N-380/220, two power transformers and power generator maintain the interlocking relationship between the strict, no parallel operation, the ground, then zero the system independently, in order to prevent the generator to run a separate power transformer side of the feedback voltage.

1.2 Distribution Line
Distribution lines, including overhead lines, cable lines, interior wiring and bus its common requirements are: a. the use of three-phase five-wire type, b. the use of insulated wire (except bus, c. wire cross-section to meet the computational load, mechanical strength, voltage loss, the smallest cross-section, the ambient temperature requirements.

Distribution equipment should be use, and system wiring diagram marked shunt to prevent misuse. Distribution boxes should be equipped with locks, by the person responsible.

1.3 electrical equipment
Construction site for a variety of electrical equipment mainly refers to electromechanical motor, all kinds of electric tools, welding, lighting, etc., electrical equipment failure is often the result of accident.

2 construction site of the electricity management measures should be strictly in accordance with fire <<construction site temporary electrical safety specifications>> require regular electrical design, enhanced power management. Efforts should be from the following aspects.

2.1 in strict accordance with national electrical installation specifications laying electrical lines to prevent short circuit, poor contact, the occurrence of overload, etc. Select the wire to fully consider the electricity load, and the use of mechanical strength of environmental factors, the total power distribution box (or with electrical room, electrical distribution boxes, switch boxes, etc. to take the necessary moisture, dust, damage measures, to install short-circuit, overload, leakage and other electrical protective devices, distribution equipment and distribution lines for the implementation of short-circuit protection, overload protection and leakage protection, electrical wiring connector to a solid surface to prevent exposure to loose oxidation of contact resistance, set up outdoor overhead electrical lines is prohibited in the trees, houses, scaffolding poles and other non-exclusive, non-bunched set, line set up to ensure the required span, line spacing and the maximum sag at the distance from the ground, and so on.

2.2 to strengthen the construction site of combustible, flammable materials management, such as the implementation of welding work to clear the scene when the combustible, flammable. Electrical wiring below the lighting should not be piled around the other combustible, flammable liquids, to prevent welding heat welding slag, high temperature or lighting circuits for short circuit, poor contact, overload and other causes of ignition of combustible flammable materials on fire.

2.3 electrical circuits to carry out regular checks and maintenance. Construction site electrical environment is relatively poor long-term withstand wind, sun, rain, mechanical wear, etc., likely to cause aging, insulation damage and short circuit, leakage, so to deal with the whole power system to carry out regular inspection, maintenance, identify problems to solve, to ensure electrical safety operation.

2.4 to enhance safe use of electricity publicity, deepening awareness of safe use of electricity should be always safe use of electricity on-site personnel to disseminate knowledge, such as education, they do not use without electrical power, when using electric appliances and flammable, combustible maintain a certain safe distance, electricity is completed to pay attention to cut off the power and so on. Second, the construction site electrician must go through formal training of staff and certificates.

3 is equipped with the necessary security products, to enhance self-protection
Construction enterprise project department should address climate (hot and humid) and engineering characteristics necessary for construction workers targeted temporary electrical safety education and tests, allowed to understand the basics of electricity, the proper use of protective equipment, enhance self-protection awareness of the project according to the Ministry but also the characteristics of construction projects and jobs for the construction site may have a direct use of electric devices with qualified personnel in protective equipment against electric shock (such as insulated gloves, insulated shoes, and workers required to properly supervise the operation use of PPE, the operator of education to improve self-protection, to prevent illegal operations, is strictly prohibited in the case of non-care staff live operation.

4 electrical equipment to strengthen management, improve construction site safety in the use of electrical equipment, technical level
Construction site using the original components of the electrical design of their products is generally universal and many meet the construction site and use the environment (dust, outdoor, wet, move, coupled with the hot season and so many electrical (leakage switch, air switch, and other new The product parameters are correct, the normal state, the use of slow motion after a period of time, residual operating data is not accurate, or even failure. Links to free download http://www.hi138.com
Construction site is now configured to use the secondary side of welding an additional load step-down protector, is easy to operate or to reduce costs, part of the welding machine is not configured with secondary side load buck protection or damage is not repaired in time after , replace, and take short steps (so that the second side of the load step-down protection removal, welding secondary grounding line is not damaged or lost in time after the purchase, but with steel, flat steel and other alternative, the construction enterprises to reduce the procurement of low cost electrical products, some are inferior products, electrical products, technical parameters such instability, poor safety performance, in which the action is not action, resulting in electric shocks, do not follow the technical requirements for products with electrical equipment, Ground lines, such as welding or the use of steel instead of flat steel, etc. on the construction site using the GFCI, the secondary side load buck welding protection, hand-held power tools for regular testing, construction companies the ability to detect non-commissioned testing bodies. management response to the construction site with the (power distribution equipment, welding the second side of the load step-down protector, air leakage and other key electrical components, switch monitoring, to prevent low-quality electrical components into the construction site, the stability of quality and performance problems in a timely manner to the construction products business feedback. the construction enterprises should strengthen the management of newly purchased electrical equipment, serious security protection system in accordance with the requirements for acceptance to eliminate substandard electrical equipment into the construction site. to strengthen the construction on-site electricity regular inspection, maintenance, repair work responsibility system, project management, strengthen supervision and inspection department, on-site electrician to supervise the quality of work record, construction of electrical equipment to ensure complete security protection devices, effective, and complete data record electricity Prevention electrical safety measures there are many accidents, but the final measure is the use of earth leakage protection switch in case of electric shock (leakage accident, leakage protection switch to action, promptly cut off the power to protect the personal and equipment safety construction projects with construction power was mainly due to security risks that people are more temporary concept for worship, and portable, hand-held electrical equipment and tools is "temporary" in the "temporary", they run out of the withdrawal, use draw a line, line wiring and installation of randomness is very large, many accidents and hazards are out of their body.

5 to improve staff quality, enhance electrical safety education
Construction enterprises should strengthen the construction site temporary power to popularize the knowledge, whether it is the construction side, or supervision units, especially the construction unit should pay attention to the safety of temporary power, operators should focus on the environment (temperature and humidity and other factors necessary for of the temporary electrical safety education and tests should be in the project and the construction team to establish the Ministry of accident emergency personnel, emergency personnel subject to electric shock after the first aid training, and contingency plans based on the construction site after the accident of electric shock first aid for Regular exercise, to familiarize themselves with emergency procedures, to reduce the electrocution accidents. popularization of knowledge of electricity and increase the safety of electrical safety education in the knowledge content of education on the proper use of electrical equipment operator, hand-held power tools to improve the awareness to prevent electric shock strictly enforce the implementation of permit induction system.

Electrical engineer, according to the actual situation of the project preparation of construction design (construction technology programs and scrutiny, requiring a perfect quality assurance system, ensure the quality of the technical measures, and should be consistent with design drawings and by the joint trial of the force in the country electrical engineering construction and acceptance specifications. electrical engineer must first have a comprehensive knowledge, building works, including construction, renovation, plumbing, HVAC, electrical installation.

6 Conclusion
This occurred for many years from the construction site accident analysis can be seen electricity, security devices and security management is to do the safe operation of two electric wheels, which the two wheels, not a big, a small, hand and soft Only two wheels while turning both focusing on electrical safety equipment, materials and staffing, but also grasp the safe use of electricity management system implementation, in order to prevent electrical equipment and personal accidents and ensure the successful completion of construction projects. Share for free download http://www.hi138.com