The Expert Community for Bathroom Remodeling

Passport of lightning protection. What information does the passport of the grounding device contain and how to fill it out

Documentation for any electrical installation includes a drawing of a grounding device (grounding), an accurate description of all its parts and resistance calculated for specific operating conditions. Rules for the operation of electrical installations (PTEEP) require that a passport be entered for any grounding. What information is entered in the passport of the ground loop, and how to fill it out correctly?

General information

Grounding is installed to protect a person from electric shocks, it also provides correct work electrical appliances. When talking about a grounding device, they mean the grounding conductor and grounding conductors together. When installing a grounding mechanism, it is necessary to issue a passport.

The passport for the grounding device must include the following elements:

  • date from which the operation of the device began;
  • enumeration of technical characteristics and properties;
  • the results of inspection of the state of the device;
  • list of inspections and detected faults;
  • executive scheme.
  • information about the repair and those transformations that were made to the design.

Breaks and insufficient contact throughout the entire circuit between the electrical installation and the ground electrode must not be allowed. It is necessary to measure the electrical resistance of the structure and inspect its constituent parts. For this purpose, soil is raised in different places, and an inspection is carried out.

Grounding device passport form

Passport for grounding has the status of the main normative document, therefore, when checking electrical installations by authorized bodies, it must be provided.

There is a special data entry form - form 24. When filling out the passport of the grounding device, indicate the name of the electrical installation and the date it began to operate.

If they were held repair work, then the date of their execution is noted.

The list of grounding technical characteristics includes information on the material of the grounding electrodes, their number, dimensions, and configuration. Separately, vertical and horizontal earthing switches are described. The depth of the connecting strips is indicated.

The passport must contain an executive grounding scheme. Make any changes related to the repair, replacement of parts. If there are changes in the design, they are also noted.

Data on the resistance of the soil and the grounding device are entered, the method of connecting the elements is noted. Describe what kind of protective agent the joints are coated with (enamel, resin, etc.).

Entering test results

There is no single form for a grounding device passport. There is only a recommended sample. It can be changed at your discretion, however, the main data must be present in the document.

On the very first page (cover) they write the name of the object, then there are technical characteristics and a diagram. Then a table is presented in which the results of the inspections are entered.

Since earth electrodes are in close contact with the ground, corrosion resistance is important for them. Each time during inspection, special attention is paid to the degree of corrosion and the characteristic is entered in the table. The specialist inspecting the grounding writes down his name on the form and signs it. Such entries in the passport are made every 6 months, in accordance with the requirements for the timing of the check.

Selectively, the soil is opened and. A table is also provided for these data in the passport. After checking the ground circuit, an act is drawn up and applied to the passport. The frequency of such inspections is much smaller - once every 12 years.

Details on the methods of monitoring grounding equipment can be found in the training manual RD 153-34.0-20.525-00.

portable model

This type of grounding is used to ensure safety when working on electrical equipment which is in the off state. It is also used on those parts of the device through which current should flow, but it is turned off for the duration of the work. Absolutely all portable devices strictly comply with GOST.

A passport is also issued for portable grounding. It contains information about technical specifications product, information about its acceptance and permission to use, manufacturer's warranties, as well as storage conditions and safety measures when handling the device. In fact, this document is similar to any other electrical product passport.

1.
2.
3.

Lightning protection, regardless of whether it is an industrial facility, a public building or a private cottage, is necessary - primarily because it will prevent the death of people and fire, which can occur with a direct lightning strike.

Options for creating lightning protection

For each version of roofing, there are certain types of lightning protection. For example, the creation of protection against the consequences of a lightning strike for a soft roof is performed using a special mesh or special holders. As seen in the photo, lightning protection nets consist of metal conductors, which are laid along the roof ridge, and current-conducting drops, grounded separately. Their fixation is carried out using the material used for the installation of the roof. There is another way of arranging lightning rods, which is considered universal, this is the installation of masts on two gables of the building, between which a cable-wire is attached.


The design of lightning protection is different, and it is chosen based on the specific situation. So for a galvanized roof, the following method is used: a steel wire with a diameter of 6 millimeters is rolled around the perimeter into the roofing iron and grounded at the corners of the roof. In this case, the lightning protection of the chimney, which rises above the ridge, is created by mounting the lightning rod on the chimney, it is also grounded. A roof protected in this way will not be affected by a thunderstorm.

It has a number of features lightning protection of a warehouse and an industrial building when the roof is made of metal tiles. The point is that this roofing material durable and easy to install, but not always safe in operation, since the design of its sheets has a number of features.

Metal tiles are made of corrugated aluminum or steel plates, and they are covered with plastic on top on both sides (they are similar in functionality to capacitor plates). Roof sheets isolated from each other and from the ground are capable of accumulating electrical potential in the event of a lightning discharge - we should not forget that in some cases an electrostatic discharge reaches tens of thousands of volts.


It is known that there are regions on the territory of the country where thunderstorms occur more often than in other areas - before choosing a metal tile as a roofing material, it is necessary to take into account the above risks. Such objects belong to the 1st and 2nd class in terms of lightning protection, and the creation of lightning rods on them must be done correctly. At the same time, a lightning protection passport is entered for each grounding device in operation.

Lightning protection systems: active and passive

To make a decision on the admission to the operation of public and industrial buildings and structures, a lightning protection protocol is required, only certified laboratories can draw it up (read: "").

The passive system has been used for several centuries.

Lightning protection of a dacha, a residential building, a production facility may have one of such lightning rods as:

  • cable;
  • rod pin;
  • special mesh.


Relatively recently, an active one appeared and very quickly became popular. Its design is a mast mounted on the roof with a lightning rod attached to it. An active system differs from a passive one in quick installation and a wider protection zone. Compared to a rod lightning rod, it covers an area 5 times larger. An active system is relevant when lightning protection of churches, bell towers, water towers, television centers, etc. is required.

Lightning protection of a soft roof

Information on how to create an active or passive lightning protection of a cottage with your own hands on a soft roof can be found on the Internet. If a passive system is mounted, then it is used from 6 mm steel wire in increments of 6x6 meters to 12x12 meters. It is placed under a layer of insulation (necessarily fireproof or slow-burning).

We install grounding in a private house, a fairly detailed video instruction:

It is desirable that the installation of the grid is carried out in the process of carrying out roofing works. If a soft roof installed, then problems are possible. The biggest one is that there is a possibility of surface damage during the installation of the lightning protection mesh. This is due to the fact that such materials for lightning protection as steel wire are supplied in coils and they have to be straightened directly on the roof. Also, when carrying out work, it is necessary to move along the roof, and the integrity of the coating is not always possible to maintain (read also: "

Lightning protection is a set of measures aimed at reducing the risk of damage or destruction of buildings and premises, transport infrastructure facilities, communications, technological equipment from atmospheric electricity. In the article we will tell you how the Ministry of Health works, and how to apply for a passport for it.

From this article you will learn:

What is and why lightning protection and grounding are needed

Atmospheric electricity is dangerous because of its unpredictability. Up to 16 million thunderstorms occur annually on the globe, that is, about 44 thousand per day. As a result of a direct lightning strike, destruction of buildings, fires, death of people located at these facilities or in dangerous proximity can occur. It can also result in equipment failure or damage.

The lightning discharge at the breakdown site is approximately 30 kV per 1 cm. Lightning always hits the place where it is easier for charged electrons to propagate. Therefore, the metal tip of the lightning rod will accumulate lightning discharges, for which this is the easiest way.

The most lightning hazardous period of the year in Russian Federation is the summer season, mostly in July. As a rule, in July, thunderstorms are most frequent, as the height of the clouds increases to 12-14 km above the ground, and because of this, the charge between them increases.

Types of lightning protection

Lightning protection devices (LP) are a way to protect infrastructure facilities that are designed to neutralize a lightning discharge.

The lightning discharges that we see in the window are already the reverse course of lightning. The structure of the MS resembles a ring. A direct strike is a direct contact of a lightning channel with a building or structure, accompanied by the flow of current through it.

There is also a secondary damage associated with the induction of potentials on the metal elements of the structure, equipment, in open metal circuits, caused by close lightning discharges and creating the danger of sparking inside the protected object.

High potential drift - transfer to the protected building or structure through extended metal communications (underground, surface and aboveground pipelines, cables, etc.) of electrical potentials arising from direct and close lightning strikes and creating the danger of sparking inside the protected object.

Lightning protection device

MOH is divided into external and internal. External is an elementary type of protection against electric discharge during a thunderstorm and is designed to intercept lightning and safely lead it to the ground. Thus, at the moment of a direct strike into the object, the lightning protection system must take on the full strength of the lightning discharge current and divert it through the down conductors to the ground circuit, where the energy will safely spread in the ground.

Lightning protection project

An important task in the design of an object is the reasonable choice of the OH system. This is an important part of the construction project in terms of environment, preservation of buildings and structures, life support facilities and industrial communications from the effects of atmospheric electricity.

It should be noted that in Russia there are standards for the categorization of protected objects and the effectiveness of lightning protection measures.

When designing, methodological guidelines are used, which are given in:

  • RD 34.21.122-87,
  • SO 153 - 34.21.122 - 2003,
  • GOST R IEC 62305-1-2010,

Equipment

External MZ consists of:

  • lightning rod,
  • lightning rod (down conductor),
  • horizontal ground loop,
  • deep rod grounding.

Installation of lightning protection

The following requirements are imposed on the installation of the ground loop of the PUE:

  • Accessible location of ground electrodes for visual inspection once every six months during the period of the greatest and least freezing of the soil (hot and cold seasons), as well as for opening the soil at least once every 12 years.
  • The strength of the connecting elements - a deep earthing rod must be securely bolted or welded to a horizontal ground loop. The grounding conductor should not crawl out of the ground, since in this case the lightning discharge current will not spread inside the soil, a reverse transformation will occur, the consequences of which will be catastrophic for the MP object.
  • The level of reliability of devices that act as fuses.
  • Measurement of grounding elements. The measurement must be carried out by accredited electrical laboratories. Insulation resistance protocol is always .

To prepare for installation, it is necessary to determine the dimensions of the building and the materials used in the structures, determine the places for installing grounding, lowering down conductors from lightning rods to the ground loop, as well as installing lightning rods. Then the required number of down conductors, lightning rods, ground electrodes, auxiliary elements - holders and fasteners is calculated.

Installation includes a sequence of operations:

  • installation of holders;
  • installation of lightning rods and laying of conductors;
  • grounding mounting (laying a contour of metal strips or rods into a trench around the building).

Attention

After installation in without fail ground resistance should be checked, which should not exceed 15 ohms. Then the ground loop will be connected to the common ground loop of electrical installations in the building.

Active lightning protection

In addition to traditional external systems, an active MZ is currently widespread - an installation with a system of preemptive streamer emission.

The principle of operation is based on the prevention of a lightning strike by forming its own artificial streamer, which is directed towards the lightning leader. This effect can be achieved, for example, by installing a parallel chain of capacitors and arresters.

If the lightning leader approaches such a lightning rod, there will be an increase in the electric field strength and a breakdown of the arresters, a spark discharge occurs. The air around is ionized, which contributes to the appearance of ascending streamers, moreover, ahead of the approach of the descending leader. Such an advance interval is the main characteristic of the installation and is indicated in its passport.

That's how it works active system in outline. Manufacturers claim that the protective zone of such devices significantly exceeds the traditional external MOH system (Franklin rod). However, there is currently no reliable evidence that this system is more effective than the traditional one.

Internal lightning protection system

In addition to the external one, which is, in fact, an elementary Franklin rod, there is also an internal MV, which is a complex of protective devices against surge voltages - resistors and inductors. In no way does it replace the external one. The purpose of an SPD is to protect expensive network equipment. SPDs are divided into three types.

It is known that there are direct and indirect lightning strikes. Direct - a lightning strike into a building or into the poles of communication or power transmission lines connected to it. Indirect - occurs due to lightning strikes near communication lines.

Type 1 surge voltage from direct impact. It is usually installed in rural areas with overhead power lines or communications, in buildings with lightning rods or located near high-rise objects (mobile towers, tall trees etc.).

Type 2 surge voltage from indirect impact. In this case, the stored energy is about 17 times less than the energy of a direct impact.

Type 3 for its survivability requires the use of types 1 and 2 in front of itself and is installed directly next to the consumer. It can be, for example, a regular surge protector such as UPS or a voltage stabilizer.

Passport of lightning protection - sample

The passport is transferred to the owner of the object of protection after the installation of the lightning protection device. It contains a title page, inspection and verification protocols, as well as a diagram with the designation of measurement control points.

Find the sample document on labor protection you need in the Reference system "Labor protection". Our experts have already prepared 2506 templates!

A sample passport for a grounding device is available in Guidelines for monitoring the state of the memory (RD 153-34.0-20.525-00).

This document should contain information about the measurements taken. The passport of the grounding device is kept by the person responsible for the operation of the building or by the chief power engineer.

A visual inspection of the grounding device is carried out by the commission of the organization, and the measurement of the ground loop is carried out.

To ensure the long-term safety of the circuit, it is necessary to regularly inspect it, as well as timely repair of bolted or welded joints in accordance with clause 1.2 of the Regulations on the scheduled preventive maintenance of industrial buildings and structures, approved by the Decree of the USSR Gosstroy of December 29, 1973 No. 279 MDS 13-14.2000.

1. PURPOSE

1.1. Lightning protection is designed to protect the equipment placed on the mast from lightning strikes by receiving and diverting discharges to the ground.

2. DESCRIPTION OF THE DESIGN

2.1. Lightning protection consists of 2 parts: lightning receiving part, grounding part.

The lightning-receiving part is a receiver and down conductor.

2.2 The lightning rod is a steel rod up to 2 m long, which is mounted on the mast using insulating (non-conductive) brackets. The lightning rod is connected to the down conductor using special clamps (or threaded connections) treated with conductive paste to improve the quality of the connection.

2.3. The down conductor is an insulated rod conductor (insulated wire) that is connected to the grounding part (grounding system).

Fig.1. Lightning protection of a mast with equipment

3. COMPLETENESS

3.1. receiving part

Name

Quantity, pcs.

Lightning rod L=2m

Insulating bracket with fixings included

Current lead insulated with copper rod d=8-10mm

(length is selected depending on the height of the mast)

Screed for down conductor

Ground Stretch Insulator

Universal clamp made of galvanized steel (electrode/strip/rod)

Lightning protection can be supplied both with a grounding system and without it.

4. INSTALLATION PROCEDURE

4.1. Assemble and fix the lightning rod on the mast, according to the diagram in Fig.2.

4.2. Connect the lightning rod (1) to the down conductor (3) using a clamp (6) using conductive paste.

4.3. Connect the stretching of the upper level of the mast, located on the side of the lightning rod, to the mast through the insulator (5) (into the break of the cable brace, as a conductor).

4.4. Fasten the down conductor (6) to the extension using cable ties (4).

4.5. Install and secure the mast.

4.6. Connect the down conductor (3) to the earthing system.

5. CARE

Lubricate all threaded connections with grease at least once a year.

6.STORAGE PACKAGING TRANSPORT

Lightning protection should be stored in the manufacturer's container.

Storage in a packed state is allowed in equipped warehouses with a relative air humidity of not more than 75% and the absence of acid and alkali vapors.

Packed lightning protection can be transported by any type of transport.

7. MANUFACTURER WARRANTY

The warranty period for lightning protection is one year from the date of installation (commissioning), but not more than 18 months from the date of manufacture.

8. ACCEPTANCE CERTIFICATE

Lightning protection complies with the requirements of design documentation and is recognized as fit for operation.


Almost any elevated object is not immune from lightning strikes.
Up to 16 million thunderstorms occur annually on the globe, i.e., about 44 thousand per day.

Thunderstorm activity over different parts of the earth's surface is not the same.

To calculate lightning protection measures, it is necessary to know a specific value that characterizes lightning activity in a given area. Such a value is the intensity of thunderstorm activity, which is usually determined by the number of thunderstorm hours or thunderstorm days per year, calculated as the arithmetic mean over a number of years of observations for a certain place on the earth's surface.

The intensity of thunderstorm activity in a given region of the earth's surface is also determined by the number of lightning strikes per year per 1 km2 of the earth's surface.

The number of hours of thunderstorm activity per year is taken from the official data from the local weather stations.

The relationship between thunderstorm activity and the average number of lightning strikes per km2 (n) is:

The average duration of thunderstorms for one thunderstorm day for the territory of the European part of Russia and Ukraine is 1.5–2 hours.

The average annual duration of thunderstorms for Moscow is 10-20 hours/year, the density of lightning strikes into the ground is 1/km2 per year - 2.0.

Maps of the average annual duration of thunderstorms

(PUE 7. Rules for the installation of electrical installations)

In European countries, the designer can easily obtain these statistics using automated system determining the location of a lightning strike. These systems are made up of a large number sensors located throughout Europe and forming a single control network.

Information from the sensors is sent to the control servers in real time and is available via the Internet using a special password.


According to available data, in areas with the number of thunderstorm hours per year π = 30 per 1 km2 of the earth's surface, on average, it is affected once every 2 years, i.e. the average number of lightning discharges in 1 km2 of the earth's surface for 1 thunderstorm hour is 0.067. These data make it possible to estimate the frequency of lightning strikes of various objects.

The expected number of lightning strikes per year for buildings and structures with a height of not more than 60 m, not equipped with lightning protection, having a constant height (Fig. 4a), is determined by the formula:

where:
S - width of the protected building (structure), m; L - length of the protected building (structure), m; hx is the height of the building along its sides, m;
n - the average number of lightning strikes per 1 km2 of the earth's surface per year in the area of ​​building construction.

Note: for middle lane Russia can accept n = 5


The formula is given taking into account the fact that the number of lightning strikes of a building or structure is proportional to the area occupied not only by the building or structure itself, but also by the sum of the areas of projections of protective zones created by the edges and corners of the roof of the building or structure.

If parts of the building are not of the same height (Fig. 4b), then the protection zone created by the high-rise part can cover the rest of the building.

If the high-rise protection zone does not cover the entire building, it is necessary to take into account the part of the building that is outside the high-rise protection zone.

The radius of the protective action of the lightning rod is determined by the height of the mast and for a traditional system is approximately calculated by the formula:
R=1.732xh,
where h is the height from the high point at home to the peak of the lightning rod.

Fig.4. Protection zone created by structures


Rice. 4. Protection zone created by structures a - buildings with the same height; b - buildings with different heights.
The recommended formula makes it possible to quantify the probability of lightning damage to various structures located in a flat area with fairly homogeneous soil conditions.

The value of the parameter n included in the calculation formula may differ several times from the values ​​given above.

In mountainous areas, most of the lightning discharges occur between clouds, so the value of n can be significantly smaller.

Areas where there are layers of soil of high conductivity, as observations show, are selectively affected by lightning discharges, so the value of n in these areas can be significantly higher.

Areas with poorly conducting soils, in which extended metal communications are laid, can be selectively affected ( cable lines, metal pipelines).

Metal objects (towers, chimneys) rising above the ground are also selectively affected.


The density of lightning strikes to the ground, expressed in terms of the number of strikes per 1 km 2 of the earth's surface per year, is determined according to meteorological observations at the location of the object or is calculated by the formula.

When calculating the number of strikes by downward lightning, it is assumed that the towering object takes on discharges that, in its absence, would hit the earth's surface of a certain area (the so-called retraction surface). This area has the shape of a circle for a concentrated object (vertical pipe or tower) and the shape of a rectangle for an extended object.
The available statistics of damage to objects of different heights in areas with different duration of thunderstorms made it possible to determine the relationship between the contraction radius (ro) and the height of the object (hх); on average, it can be taken ro = 3hx.
The analysis shows that concentrated objects are affected by descending lightning up to 150 m high. Objects higher than 150 m by 90% are affected by ascending lightning.

In domestic standards, the height of the lightning rod and the protected object, under any circumstances, is measured from the ground level, and not from the roof of the structure, which guarantees a certain margin during design, which, unfortunately, is not quantified.

External lightning protection
The external lightning protection of the house is designed to intercept the lightning and divert it to the ground. Thus, the ingress of lightning into the building and its ignition is completely excluded.
Internal lightning protection
A building fire is not the only hazard in a thunderstorm. There is a risk that devices will be exposed to an electromagnetic field that causes overvoltage in electrical networks. This can lead to turning off the alarm and light, disable equipment.
The installation of special surge voltage protection devices allows you to instantly respond to voltage fluctuations in the network and keep expensive equipment running.

The main types of lightning rod systems:

    using 1 pin for the whole house, which, in turn, is divided into traditional (Franklin lightning rod) and with an ionizer;

    using a system of pins interconnected (Faraday cage).

    using a cable pulled over the protected structure.


Effects of lightning current


When lightning discharges into an object, the current has thermal, mechanical and electromagnetic effects.
Thermal effects of lightning current. The flow of lightning current through structures is associated with the release of heat. In this case, the lightning current can cause the down conductor to heat up to a melting or even evaporation temperature.
The cross section of the conductors must be selected in such a way that the danger of impermissible overheating is excluded.


The melting of the metal at the point of contact of the lightning channel can be significant if the lightning hits a sharp spire. When a lightning channel contacts a metal plane, melting occurs over a sufficiently large area, numerically equal in square millimeters to the value of the current amplitude in kiloamperes.
Mechanical effects of lightning currents. The mechanical forces arising in various parts of the building and structures during the passage of lightning currents through them can be very significant.

When exposed to lightning currents wooden structures can be completely destroyed, and brick pipes and other elevated structures made of stone and brick can be significantly damaged.
When lightning strikes concrete, a narrow discharge channel is formed. Significant energy released in the discharge channel can cause destruction, which will lead either to a decrease in the mechanical strength of concrete or to deformation of the structure.
When lightning strikes reinforced concrete, the destruction of concrete with deformation of the steel reinforcement is possible.

LIGHTNING PROTECTION CHECK

The lightning protection system of a building needs to be checked periodically. The need for such measures is due, firstly, to the importance of these devices for the safety of both the real estate objects themselves and people nearby, and secondly, the presence of lightning rods under the constant influence of adverse environmental factors.

The first check of the lightning protection system is carried out immediately after installation. In the future, it is carried out at certain, established by the standards, intervals of time.

FREQUENCY OF LIGHTNING PROTECTION CHECK

The frequency of lightning protection testing is determined in accordance with clause 1.14 of RD 34.21.122-87 "Instructions for the installation of lightning protection of buildings and structures."

According to the document, for all categories of buildings, it is held at least once a year.

According to the rules technical operation electrical installations of consumers "testing of ground loops is carried out:

    1 time in six months - visual inspection of the visible elements of the grounding device;

    1 time in 12 years - inspection, accompanied by a selective opening of the soil.

Ground loop resistance measurement:

    1 time in 6 years - on power lines with voltage up to 1000 V;

    1 time in 12 years - on power lines with a voltage of over 1000 V.

SYSTEM OF ACTIVITIES FOR LIGHTNING PROTECTION CHECK

Lightning protection testing includes the following activities:

    checking the connection between grounding and lightning rod;

    contact resistance measurement bolted connections lightning protection systems;

    grounding check;

    insulation test;

    visual inspection of the integrity of the system elements (down conductors, lightning rod, contact points between them), the absence of corrosion on them;

    checking the compliance of the actually installed lightning protection system with the design documentation, the validity of installing this type of lightning rod at this facility;

    testing of mechanical strength and integrity of welded joints of the lightning protection system (all joints are tapped with a hammer);

    determination of the resistance of the grounding conductor of each separately standing lightning rod. During subsequent checks, the resistance value should not exceed the level determined during acceptance tests by more than 5 times;

The resistance of the lightning protection system is checked using the MRU-101 device. In this case, the method of testing lightning protection can be different. The most common include:
Resistance measurement in a lightning protection system using a three-pole circuit
Resistance measurement in a lightning protection system using a four-pole circuit
The four-pole test system is more accurate and minimizes the possibility of error.
Grounding testing is best done under conditions of maximum ground resistance - in dry weather or in conditions of the greatest freezing. In other cases, correction factors are used to obtain accurate data.

Based on the results of the system inspection, a lightning protection test protocol is drawn up, which indicates that the equipment is in good condition.

According to current regulations, detailed object data and, accordingly, risk factors are required to determine the lightning protection class. To receive them, it is proposed to fill out several questionnaires. But thanks to this plate, you can pre-select the lightning protection class and risk factors without detailed data.

Min. amplitude value of lightning current

Max. amplitude value of lightning current

Probability of hitting the lightning protection system

3 kA

200 kA

5 kA

150 kA

10 kA

100 kA

16 kA

100 kA

Lightning protection of industrial buildings and structures
(Handbook of power supply industrial enterprises. Industrial electrical networks).

Determination of the need for lightning protection of industrial buildings and structures that are not included in those indicated in Table. , can be made for reasons that give rise to the use of lightning protection devices.
The reasons for the need for lightning protection devices can be the number of lightning strikes per year of more than 0.05 for buildings and structures of I and II degrees of fire resistance; 0.01 - for III, IV and V degrees of fire resistance (regardless of the activity of thunderstorm activity in the area under consideration).
In buildings with a large area (with a width of 100 m or more), it is necessary, in accordance with § 2-15 and 2-27 CH305-69, to provide measures for equalizing the potential inside the building in order to avoid damage to electrical installations and injury to people during direct lightning strikes into the building.

Classification of buildings and structures according to the lightning protection device and the need for its implementation

Buildings and constructions

The area in which buildings and structures are subject to mandatory lightning protection

Industrial buildings and structures with industries related to classes B-I and B-II of the PUE Throughout the USSR
Industrial buildings and structures with premises classified as B-Ia, B-Ib and B-IIa according to the Electrical Installation Rules In areas with an average thunderstorm activity of 10 hours or more per year

ІІ

outdoor technical installations and outdoor warehouses containing explosive gases, vapors, combustible and flammable liquids (for example, gas holders, containers, loading and unloading racks, etc.), classified as class B-IIa according to PUE Throughout the USSR

ІІ

Industrial buildings and structures with industries classified as P-I, P-II or P-IIa according to PUE In areas with average thunderstorm activity of 20 thunderstorm hours or more per year, with the expected number of lightning strikes of a building or structure per year of at least 0.05 for buildings or structures of the I degree of fire resistance and 0.01 - for III, IV and V degrees of resistance

ІІІ

Industrial buildings and structures of III, IV and V degrees of fire resistance, classified according to fire hazard levels to categories D and D according to SNiP II-M, 2-62, as well as open storages of solid combustible substances, classified to class P-III according to PUE In areas with average thunderstorm activity of 20 thunderstorm hours or more per year, with the expected number of lightning strikes of a building or structure per year of at least 0.05

ІІІ

Outdoor installations in which flammable liquids with a vapor flash point above 45 ° C are used or stored, classified as class P-III according to PUE

ІІІ

Livestock and poultry buildings and structures of agricultural enterprises of III, IV and V degrees of fire resistance for the following purposes: barns and calves for 100 heads or more, pigsties for animals of all ages and groups for 100 heads or more; stables for 40 heads or more; poultry houses for all types of poultry ages for 1000 heads and more In areas with average thunderstorm activity of 40 thunderstorm hours or more per year

ІІІ

Vertical exhaust pipes of industrial enterprises and boiler houses, water and silo towers, fire towers height 15-30 m from the ground In areas with average thunderstorm activity of 20 thunderstorm hours or more per year

ІІІ

Vertical exhaust pipes of industrial enterprises and boiler houses with a height of more than 30 m from the ground Throughout the USSR

ІІІ

Residential and public buildings rising at the level of the general building mass by more than 25 m, as well as separate buildings with a height of more than 30 m, remote from the building array by at least 100 m In areas with average thunderstorm activity of 20 thunderstorm hours or more per year

ІІІ

Public buildings IV and V degrees of fire resistance for the following purposes: kindergartens and nurseries; educational and dormitory buildings, canteens of sanatoriums, recreation facilities and pioneer camps, dormitory buildings of hospitals; clubs and cinemas In areas with average thunderstorm activity of 20 thunderstorm hours or more per year

ІІІ

Buildings and structures of historical and artistic significance under the management fine arts and Protection of Monuments of the Ministry of Culture of the USSR Throughout the USSR

ІІІ


Clarification of the Department for Supervision in the Electric Power Industry of Rostekhnadzor on the joint application of the "Instructions for lightning protection of buildings and structures" (RD 34.21.122-87) and "Instructions for lightning protection of buildings, structures and industrial communications" (SO 153-34.21.122-2003)

FEDERAL SERVICE

Heads of Federal
public institutions
departments and energy
inspections of the state
energy supervision

FOR ENVIRONMENTAL, TECHNOLOGICAL

AND NUCLEAR SUPERVISION

CONTROL

ON SUPERVISION IN THE ELECTRIC POWER INDUSTRY

109074, Moscow, K-74

Kitaygorodsky Ave., 7

tel. 710-55-13, fax 710-58-29

01.12.2004

10-03-04/182

No.

from

To the department for supervision in the electric power industry Federal Service for Supervision in the Electric Power Industry (Rostekhnadzor) and earlier Gosenergonadzor receives from numerous organizationsquestions about the procedure for using the "Instructions for lightning protection of buildings, structures and industrialcommunications" (SO 153-34.21.122-2003), approved by order of the Ministry of Energy of Russia dated June 30, 2003 No. 280. Attention is drawn to the difficulties in using this Instruction due toabsence reference materials. Questions are also asked about the legitimacy of the order of RAO "UESof Russia" dated August 14, 2003 No. 422 "On the revision of regulatory and technical documents (NTD) and the procedure for their action in accordance with the Federal Law "On Technical Regulation" and on the timing of the preparation ofbiy to instructions SO 153-34.21.122-2003.

Rostekhnadzor's Office for Supervision in the Electric Power Industry explains in this regard.

In accordance with the regulation federal law dated December 27, 2002 No. 184-FZ "On technicalregulation", art. 4 bodies executive power has the right to approve (issue) documents (acts) of a recommendatory nature only. This type of document includes the "Instructionon lightning protection of buildings, structures and industrial communications".

Order of the Ministry of Energy of Russia dated June 30, 2003 No. 280 does not cancel the effect of the previous edition"Instructions for lightning protection of buildings and structures" (RD 34.21.122-87), and the word "instead" in the previousThe terms of individual editions of instructions SO 153-34.21.122-2003 does not mean that the use of the previous edition is inadmissible. Design organizations have the right to use when determining initial data and in the development of protective measures, the position of any of the mentionedinstructions or a combination of them.

The term for the preparation of reference materials for the "Instructions for lightning protection of buildings, structuresand industrial communications", SO 153-34.21.122-2003, has not yet been determinedflax due to the lack of funding sources for this work.

Order of RAO "UES of Russia" dated August 14, 2003 No. 422 is a corporate document and is not valid for organizations that are not part of the structure of RAO "UES of Russia".

Head of DepartmentN.P. Dorofeev

GOSTs for lightning protection

GOST R IEC 62561.1-2014 Lightning protection system components. Part 1. Requirements for connecting components
GOST R IEC 62561.2-2014 Lightning protection system components. Part 2: Requirements for conductors and earth electrodes
GOST R IEC 62561.3-2014 Components of lightning protection systems. Part 3: Requirements for isolating spark gaps
GOST R IEC 62561.4-2014 Components of lightning protection systems. Part 4: Requirements for conductor attachment devices
GOST R IEC 62561.5-2014 Components of lightning protection systems. Part 5: Requirements for manholes and earth electrode seals
GOST R IEC 62561.6-2015 Lightning protection system components. Part 6. Requirements for lightning strike counters
GOST R IEC 62561-7-2016 Lightning protection system components. Part 7. Requirements for mixtures normalizing earthing

GOST R IEC 62305-1-2010 Risk management. Lightning protection. Part 1. General principles
GOST R IEC 62305-2-2010 Risk management. Lightning protection. Part 2. Risk assessment
GOST R IEC 62305-4-2016 Lightning protection. Part 4. Protection of electrical and electronic systems inside buildings and structures

GOST R54418.24-2013 (IEC 61400-24:2010) Renewable energy. Wind power. Wind power installations. Part 24. Lightning protection

International Electrotechnical Commission(IEC; English International Electrotechnical Commission, IEC; French Commission électrotechnique internationale, CEI) is an international non-profit organization for standardization in the field of electrical, electronic and related technologies.
IEC standards are numbered in the range 60000 - 79999 and their names are of the form IEC 60411 Graphical symbols. The numbers of the old IEC standards were converted in 1997 by adding the number 60,000, for example, the IEC 27 standard received the IEC 60027 number. The standards developed jointly with the International Organization for Standardization have names like ISO / IEC 7498-1: 1994 Open Systems Interconnection: Basic Reference Model.

The International Electrotechnical Commission (IEC) has developed standards that set out the principles for protecting buildings and structures of any purpose from surges, allowing you to correctly approach the design of building structures and the lightning protection system of an object, the rational placement of equipment and the laying of communications.

These primarily include the following standards:

    IEC-61024-1 (1990-04): "Lightning protection of building structures. Part 1. Basic principles.

    IEC-61024-1-1 (1993-09): “Lightning protection of building structures. Part 1. Basic principles. Guide A: Selection of protection levels for lightning protection systems.

    IEC-61312-1 (1995-05): “Protection against electromagnetic lightning impulse. Part 1. Basic principles.

The requirements set out in these standards form the "Zone concept of protection", the main principles of which are:

    the use of building structures with metal elements (reinforcement, frames, load-bearing elements, etc.) electrically connected to each other and the grounding system, and forming a shielding environment to reduce the impact of external electromagnetic influences inside the object (“Faraday cage”);

    availability of a properly executed grounding and potential equalization system;

    division of the object into conditional protective zones and the use of special surge protection devices (SPD);

    compliance with the rules for placing the protected equipment and conductors connected to it relative to other equipment and conductors that can have a dangerous effect or cause interference.

Similar posts