Long anode beads (AB.SK.L) are used in anti-corrosion protection systems:
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main, field and other pipelines and multi-line pipeline systems in any soil: rocky, arid, desert and permafrost, with a specific electrical resistance of more than 350 Ohm / m;
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branched communications of compressor, gas distribution, oil pumping stations, thermal power plants and industrial sites for other purposes;
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underwater crossings of single-line pipelines and their multi-line systems, for linear parts of main pipelines;
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technological tanks for any purpose, including the inner surface, for valve assemblies and pipeline connections;
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port and berthing buildings and structures, platforms and other hydraulic structures.
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Long service life
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Anode beads switch equipped with a corrosion-resistant cable for use in ECP systems
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Availability of several modifications of execution for use in various operating conditions
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Reliable fastening and sealing of the point of contact between the current supply cable and the working electrode
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Relatively low rate of anodic dissolution and, as a consequence, low weight of the working electrode
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Possibility of using in difficult conditions where AE of other types are not installed (for example, the inner surface of tanks)
AB.SK.L are manufactured in two types:
- type 1 (hereinafter AB.SK.L1) with a working element made of an electrically conductive polymer (ethylene-vinyl acetate – 55%, soot – 45%), is a product consisting of a conductive core in a coaxial sheath of an electrically conductive polymer located in a fabric sleeve filled with graphite activator;
- type 2 (hereinafter AB.SK.L2) with a working element based on titanium Grade2 (analogue of VT1-0 according to GOST 19807) coated with MMO, the working element is made in the form of a wire, is a product in which a wire working element and an insulated conductive core are placed side by side in parallel and there are insulated electrical contacts between them with a set pitch of 3 meters, this structure is located in a fabric sleeve filled with a graphite activator
To supply electric current to the working element AE.SK.L type 1 and type 2, a cable is connected.
AE.SK.L for the CP system are manufactured in the following designs:
– standard – for use on the linear part of the main pipelines, technological pipelines of the pump station;
– modular – for use under the bottom of tanks.
Anode beads AB.SK.L meet the general technical requirements OTT-29.100.99-KTN-181-12 rev. 2 “Main pipeline transportation of oil and oil products. Electrochemical protection. Long anodes” and are included in the “Register of the main types of products purchased by PJSC Transneft”.
Main characteristics |
AB.SK.L1
|
AB.SK.L2
|
Outer diameter, mm |
from 36 to 60
|
from 36 to 60
|
Length, minimum, m |
600
|
600
|
Specific weight, kg / linear meter |
1,9±0,5
|
1,6±0,5
|
Cross-section of copper conductor / connection cable, minimum, mm2 |
10
|
10
|
Specific value of the rated current, mA / linear meter |
25
|
100
|
Maximum permissible specific density of the anode current, minimum, mA / linear meter |
50
|
150
|
Long-term permissible current loads on the copper conductor / connection cable, minimum, A |
70
|
100
|
Product service life at rated / maximum current load, minimum, years |
30/25
|
30/25
|
Electrochemical equivalent of a working element, minimum, g/(A*year) |
600
|
0,01
|
Active area of 1 linear meter of the ground earther surface, minimum, m2 |
0,12
|
0,12
|