What are the protective measures against AC interference?
Release time: 2022-03-05
In order to protect the buried metal structure from the influence and damage of AC interference, grounding the buried structure is an effective drainage measure to eliminate the influence of AC interference. Through grounding, the induce...
Matters needing attention in construction of grounding flat steel
Release time: 2022-02-22
1. The grounding bus, lightning strip and mesh flat steel shall be fixed by supports.2. The grounding body should be buried in the place where the soil resistivity is low and people don't often reach. The horizontal grounding bo...
Cathodic protection of bottom surface of storage tank
Release time: 2022-02-11
The soil corrosion tank foundation is mainly composed of sand layer and asphalt sand, and the tank bottom plate is located on the asphalt sand surface. Due to the alternation of full load and no-load in the tank, the influence of tempera...
Regulation of DC railway stray current
Release time: 2022-01-17
Almost all DC railways use rail as the return channel of working current. The rails are mounted on wooden or concrete sleepers and in good contact with the soil. The conductive soil electrolyte is in parallel with the guide rail. The bas...
How to improve the service life of magnesium anode?
Release time: 2022-01-05
The corrosion of magnesium anode is mainly due to the presence of second phase in the magnesium anode caused by alloy and impurity elements. The chemical corrosion of magnesium anode is mainly affected by pH value of solution, nature of ...
Corrosion protection of DC stray current in seawater
Release time: 2021-12-20
The concept of cathodic protection for marine structures is similar to that of soil. It is mainly to take drainage measures and strengthen protection management.Seawater is an electrolyte with good conductivity. When DC stray current fro...
Underwater corrosion of ship structure
Release time: 2021-12-13
The underwater part of hull structure generally includes stern, bow, bottom and side. The bow of the ship is in the wave area for a long time, and the froth is frothing. Seawater can produce strong hydrodynamic force on the hull of a shi...
Commissioning and maintenance of cathodic protection for concrete structures
Release time: 2021-12-03
In the design of cathodic protection of concrete structures, the area of local reinforcement and the distribution of water in unit concrete volume should be considered, so it is more convenient to divide the protected surface into severa...
How to install the cathodic protection insulation joint on the outer wall of oil tank bottom plate?
Release time: 2021-11-17
In the construction of oil pipeline, oil tank is an important facility for oil transportation. With the development of economy and social progress, more and more people begin to pay attention to energy, environment and economic benefits....
How to measure the potential of pipeline cathodic protection?
Release time: 2021-10-28
The pipeline potential is measured to control the interference calculation, and the environmental attenuation factor and resistance interference are determined. The measuring conductor must be perpendicular to the high voltage line causi...
What are the influencing factors of reinforcement corrosion in concrete?
Release time: 2021-10-20
1. Strengthen the influence of itselfThe nonuniformity of steel bars is caused by the difference of chemical composition or crystal structure, the difference of stress level, the discontinuity of passivation film or the difference of sur...
Introduction of intelligent potential acquisition system
Release time: 2021-10-05
The intelligent potential acquisition system can collect multi-channel potential data of cathodic protection in a digital and intelligent way, instead of the traditional manual multimeter field acquisition mode. The system is mainly comp...