Measuring technics

As part of the preliminary test, a comparison is made between the planned values and the values actually realised after construction before the CP system is switched on.

When the CP is switched on and set, the planning parameters of the CP system are implemented.

Within the follow-up measurement, the initial proof of effectiveness of the CP as well as influence, lightning and protection against accidental contact inspections take place. The assessment and certification is carried out by the CP expert.

To determine the reference values, the effectiveness of the CP must be explicitly demonstrated at least once on a cathodically protected object at all coating holidays.

The definition of reference values in accordance with DVGW GW 10 and DVGW GW 17 is necessary in order to be able to assess the condition of a pipe system with regard to CP using a structured database.

The tasks include the planning of the constructive design of the corrosion protection system and the planning of installations for the required protective power supply as well as the investigation and consideration of possible influences.

The planning of an LKS system is carried out according to the regulations of DIN EN 14505.

The planning of an IKS system is carried out according to the provisions of DIN EN 12499.

Setting up a remote inspection category in accordance with DVGW GW 10 significantly reduces the inspection effort through on-site measurements.

The coating holidays identified during an intensive measurement or intensive defect location can be measured with pinpoint accuracy for further measures.

To ensure the coating quality of postcoatings on weld seams, these must be tested in accordance with DVGW GW 10.

The measurement of the pH value is a proven method for proving the effectiveness of the CP in the context of excavations.

In the course of work on the protected object, potential measurements can be taken directly on the protected object to prove the effectiveness of the CP.

As part of the condition assessment of a protected object, possible corrosion attacks on the protected object must be evaluated.

The assessment of passive corrosion protection in the course of excavations includes the inspection of the coating for existing damage.

The determination of the specific soil resistance is the basis for the evaluation of corrosion loads, influencing issues and various planning parameters.

The measurements are intended to reliably detect malfunctions of the CP of a protected object and to prove that the general condition of the corrosion protection system corresponds to that determined at the time of the re-measurement.

The inspection of an LKS system is carried out according to the methods and
procedures of DIN EN 14505.

The inspection of an IKS system is carried out according to the methods and
procedures of DIN EN 12499.

For pipes with a high coating quality, the effectiveness of the CP can be proven by means of polarisation current measurement in accordance with DVGW GW 27.

In the course of new installations of underground objects, a determination of the sheathing resistance according to DVGW GW 10 is required.

Determination and performance of tests for explosion safety of structures in potentially explosive atmospheres based on TRBS 1201-1

Testing of fixed structures and mobile equipment in accordance with accident prevention regulation DGUV V3