Date: 29,03,2023
Author: Aosion
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Rats often crawl on the distribution transformers in the power and telecommunication machine room of the substation, causing phase-to-phase short circuit between the terminals of the transformer porcelain vase, not only burning out the equipment, but also often causing the substation to trip, expanding the power outage, and threatening the safe operation of the power system. big.
It is estimated that the total number of rats in the world is about 4 times the population. The annual economic loss directly caused by rats is about 20 billion U.S. dollars. If the various losses caused by rats are added up, it can reach hundreds of billions of dollars. According to the World Food and Agriculture Organization's survey, the world loses 33 million tons of stored grain every year due to rats, and reduces production by 50 million tons due to rodent damage, enough to feed 300 million people for one year.
Case 1. In 1938, in New York, USA, the cables were bitten by rats, causing a power outage throughout the city. About a quarter of the urban fires in the United States are caused by rats gnawing on cables and wires.
Rats are responsible for about one-third of all powertrain accidents in Italy.
Case 2. In 1980, a brown house rat in the thermal power plant of Shanghai Petrochemical General Plant caused a short circuit, resulting in a sudden interruption of water, electricity and gas, with a loss of 17 million yuan. The Beijing subway was also bitten by a mouse, causing the car to stop The accident resulted in thousands of travelers being trapped in the tunnel.
Case 3: Rats are rampant in the Zhujiang Water Conservancy Building in China. They have invaded the central computer room on the 15th floor twice, causing two communication failures, resulting in direct economic losses of about 70,000 yuan, and more than 100 telephone communication failures for 10 hours. At present, in addition to waiting for the relevant departments to carry out the anti-rat work of the building, the communication room is actively carrying out the anti-rat work in the computer room.
The harm of rodents to industry is mainly in the aspect of electricity. Rodents often enter the power distribution room to cause short circuit and cause power outages, resulting in huge economic losses. The main way of harm: biting the cable insulation material, or escaping into the transformer, causing a short circuit or even a fire; when approaching a high-voltage line, due to the strong magnetic field induction, it will break down and burn electrical equipment.
First, seal the cable holes and other openings between the space below the anti-static floor and the machine with iron sheets, and cut off the rats entering the machine from the passage below the anti-static floor; secondly, seal the windows or holes of the machine above the anti-static floor , Also use iron sheets to prevent mice from entering the machine room and intruding into the machine; finally, use various materials to block the entrances of various cables and wires on the ceiling to block the passage of mice entering the machine room from the cable well and ceiling. In addition, mouse glue and mouse traps were placed in some activity channels of mice.
Although the above measures can prevent rats for a certain period of time, but the rats in the building are so rampant, it is not a long-term solution to seal the holes inside the computer room, and there are communication cables everywhere in the building, which may be bitten off at any time , If this goes on for a long time, how to ensure smooth communication. Zhujiang Water Conservancy Building, as a Grade A office building, should carry out anti-rat control work as soon as possible to effectively keep rats out of the building.
(1) Plug all the holes connected with other areas and other floors within the scope of the project, and plug the newly opened holes in the process of use or construction in time.
(2) All the gaps between the pipes and grooves entering and exiting the machine room shall be sealed.
(3) Wood is not used in principle in the decoration process, and sporadic materials in some places are treated with insect pests.
(4) All cables and wires in the machine room are laid in metal trunkings and wire tubes, and the lead wires connected to the equipment are protected by metal hoses, so that there are no bare wires in the machine room as much as possible.
(5) The connection between the new (exhaust) air system in the computer room and the new (exhaust) air duct of the building is set up with rat-proof steel mesh.
(6) Strengthen the management of the computer room environment, and prohibit things that may cause rodent damage (such as food) from being brought into the computer room.
(7) Pretend to be ultrasonic mouse repellers（Ultrasonic mice repellent） in some places where mice often appear, especially in precision and valuable electronic areas, and the number and location of installation can be considered according to actual needs.
The bridge seal is used to seal and protect the bridge port and connection of the weak current cable and the strong current cable with fireproof mud, and block all the pipes entering the machine room with an expansion agent.
First of all, it is recommended that you do a good job of sealing the computer room or the wire slot to prevent any leaks from the outside. The second is to install a detection device. There is an infrared detector specially designed to monitor mice. The monitoring system of the machine room will give an alarm, and it is necessary to thoroughly check the machine room once it prompts that there is an alarm.
In view of the fact that there are many rats in the office building and the central computer room and the violation of equipment and lines, in order to ensure the safe operation of the equipment in the computer room and the smooth communication, the technology center has given full attention to the scourge that affects the safe production of the communication network to ensure safe production As the first task, a special anti-rat project was implemented in the "central computer room" at the beginning of this month.
Since the original decoration standard of the central computer room is usually not high, and there are many decoration and installation construction teams, there are many entrances and exits to the computer room, posing safety hazards. The anti-rodent project is to block all the openings that mice can enter and exit in the central computer room. The small openings and wire slots are sealed with fireproof mud, and the larger entrances are closed with barbed wire. The anti-static floor is also blocked by partitions. . At the same time, put some anti-rat poison glue in the equipment room, and seal the opening of the switch cabinet with an iron sheet. After several days of construction by the engineering team, the special anti-rat project in the central computer room has been completed, which is believed to fundamentally solve the problem of rats invading the equipment and lines in the computer room.
In summary, the computer room is protected against rats:
1. There is no water and no food (including leftovers) in the room.
2. The cable is exposed (it is convenient for installation and maintenance, but not beautiful).
3. The cable outlet and inlet are honey-sealed with floating foam plastic (this material is cheap, easy to find, and does not bite mice).
4. The computer room is clean and hygienic, no debris is piled up, and no convenience for mice to hide and live is provided.
5. After the ditches, holes and doors and windows are closed, there is no way for mice to circulate.
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