The ZANDZ Technical Center received a request for calculation of lightning protection of an industrial building in the Smolensk region. This facility is designed to store food, which means that the building has a lot of equipment that should work without interruption. Therefore, good grounding and a potential equalization system are necessary so that there are no problems with the operation of electronics
Sports facilities, in which many people gather, must be protected from lightning and grounded. The ZANDZ Technical Center often receives requests for the development of such facilities. This time it was required to make a calculation of lightning protection and grounding of a football arena.
Gas candles in boiler rooms require particularly reliable lightning protection. The reason is clear - a direct lightning strike into an object can instantly lead to fire and explosion. Recently, the ZANDZ Technical Center received the task of calculating the lightning protection of gas candles in a boiler room, ensuring a system reliability of at least 0.95. Our technical experts offered a solution, which we are sharing with you.
Lightning protection of buildings of educational or health-improving institutions is very important, since, first of all, it is the safety of children. Recently, our ZANDZ Technical Center received a request for lightning protection of one of the bedroom buildings of the children's camp. We offer you to get familiarized with the project details and calculation example:
Vertical steel tanks, known to everyone under the abbreviation “VST”, are used to store completely different liquids. In this document, we will consider one of the requests to the ZANDZ Technical Center with a question about the lightning protection of a water tank designed to store water for fire fighting at the facility.
Colleagues, did any of you think wether it is safe to walk on bridges and overground pedestrian overcrossings during a thunderstorm? The designers contacted our ZANDZ Technical Center with a task to calculate and justify such a project. It turns out that there is a real interest in this issue. When designing a shopping center in Tchelyabinsk, near which there was an overcrossing (elevated pedestrian crossing), there arose a question: how to protect people from lightning strikes when crossing this overcrossing?
We have many times told about the importance of reliable lightning protection in hotels, health centers, sports complexes and other crowded places. At the end of last year, our partner, Company EcoAsk , IE Kosarev S.V, sent a request to the ZANDZ Technical Center with a request to calculate lightning protection system for one of such facilities - the Park-hotel "Sofrino" recreation complex in the Moscow Region. Our experts fulfilled this task. Moreover - lightning protection is already mounted at the facility. Let's look at the solution we offered and what the elements of the finished system look like.
When designing overhead power lines in the Chukotka Autonomous Region, one of our customers faced difficulties in organizing grounding. Geological data indicated too high electrical resistivity of the soil - from 30,000 to 80,000 Ohm * m. This problem is not uncommon in permafrost soils, and the ZANDZ Technical Center specialists have a reliable and proven solution for it: installation of electrolytic grounding kits.
There are several ways to protect an airplane shed and the material values that are stored in it from lightning. The first (and often the simplest) way is to use metal roof as a natural lightning rod and perform descents to the grounding device. Alas, this option is unacceptable in cases where, for example, there is an insufficient electrical connection between the metal structures or the roof is made of non-metallic material. Then another protection option is applied: installation of artificial lightning rods on the roof. This method was used by the ZANDZ Technical Center in one of its recent projects. We will study the solutuon we offered in detail.
Organization of grounding at substations with a high voltage of 110 kV and more is more difficult than at any other facility. Upon the request of EIC 7th ed., Paragraph 1.7.90, uch electrical installations having a source with an efficiently or grounded neutral must be equipped with a grounding device with a resistance of up to 0.5 Ohms.