WaveMaker helps to diagnose 100 % of the pipe body at the sections of up to several meters length in a single measurement, in both sides from the connection point. It requires neither pipeline decommissioning nor significant removal of insulation. WaveMaker is quite efficient in diagnostics of pipeline sections with limited access (passages through roads, water obstacles, walls, etc.)
This method helps to diagnose the object as a whole without disabling it from the current mode of operation or with disabling it for the minimal period, which provides obvious economic advantages in comparison with other non-destructive inspection methods that require ceasing of object operation for a period required for testing.
Acoustic emissions control method provides detection and registration of just developing, and thus really dangerous defects, and classifications them by degree of danger, but not by size.
PCM+ System is a quick and relatively accurate method of pipeline localisation and mapping even in those areas that involve contact with other metal structures, electricity interferences or areas where there is an aggregation of utilities. By the way, the system allows measuring both induced current and AC voltage gradient. As a result, the work of operator both in the area of “voltage ranges” determination and manual calculations to determine the value of cathode protection current along the pipe, becomes unnecessary. It is known that usually such operations require direct connections.
How PCM+ system works
PCM+Systemwas initially designed to avoid possible disadvantages peculiar for known methods. Now it allows surveying pipelines, to apply efficient instrument under any weather condition and environment. The signal has ultra-low frequency signal (4 Hz) and approximates by its characteristics to a direct electric current. It is used for maximally possible imitation of cathode protection current. This frequency allows signal to avoid its natural attenuation (loosing such a signal in the capacitive component). Subsequently, the cause of nearly all signal losses is that insulation was damaged or due to electrical contact with other metal structures. Those radars that are currently known do not catch such low frequencies. This is why PCM+ system locator is used in combination with the multifunction high accuracy magnetometer, which both determines and measures electrical alternate magnetic field at 4 Hz. The most advanced signal processing provides an opportunity to filter and amplify the signal so that by pressing just one key the one can change both the value of ultra-low frequency current and its immediate direction. Data logging function (integer data) allows saving the received data so that they can be input depending on the current loss in respect to the distance.
PCM+ Generating Signal
Due to the extremely powerful generating signal it is possible to transmit it to a large distance up to 32 km. It explains that in order to run a single surveillance, one needs to make far fewer number of connections. Flexible requirements to signal power provide usage of different power sources, which are available at the majority of the cathode protection stations. This provides full output capacity (150 W) during long period of time without significant efforts for battery replacement. Pipeline connection scheme has simple procedure of attachment of two pieces of wire.
The generated signal is designed according to the codes and standards for both transmission networks and energy distributions.
Metal magnetic memory method represents a fundamentally new direction in technical diagnostics and opens great practical opportunities first of all as engineering method of express quality control and as integral method of full-scale quality control of welded joints.
Metal magnetic memory method refers to the method of non-destructive testing based on the registration of distribution of residual magnetisation of metal in the defect zone (zone of high magnetic resistance), appearing under the action of technological and operational factors.Методом магнитной памяти металла называют метод неразрушающего контроля, основанный на регистрации распределения остаточной намагниченности металла в зоне дефекта (зоне высокого магнитного сопротивления), возникающей под действием технологических и эксплуатационных факторов