A single campaign tells you what the thickness is today. Only the comparison between several campaigns tells you which way it is going, and that is what maintenance decisions are based on.
- ✓ Archive organised by project, campaign after campaign
- ✓ Statistics and charts produced by the data management software
- ✓ Point-by-point comparison between successive inspections
- ✓ Inspection report intended for the client
The inspection report is the point at which the work done in the field becomes a deliverable document. It is not an administrative formality: it is the form in which the client receives, and keeps, the outcome of the inspection. To be useful it must contain not only the measured values, but also the information that makes it possible to reconstruct how they were obtained: the points inspected, the instrument and probe used, the calibration performed, the measurement mode applied.
Producing this document starts from the archive. The readings transferred from the instrument are organised by project and analysed with statistics and charts, and the report arises from that processing. The advantage over manual compilation is not only speed: the document reports the same archived data, without the transcription step in which the hardest discrepancies to explain are generated.
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Trend analysis adds the time dimension. By comparing the same point across successive campaigns you obtain the rate at which the thickness is reducing, and from that you estimate how much time separates the current value from the minimum allowable. It is this quantity, and not the single reading, that guides the planning of interventions and the choice of the interval between one inspection and the next.
What a useful report contains
| Content | Why it is needed |
|---|---|
| Identification of the points | Makes the measurement repeatable in the following campaign |
| Measured values | They constitute the outcome of the inspection, reported without transcription |
| Instrument and probe | Allow the suitability of the means employed to be assessed |
| Calibration and mode | One- or two-point; P-E, E-E, PECT, PETP or CT mode |
| Comparison with previous campaigns | Shows the trend over time, not only the current state |
From the archived data to the trend
DakMaster imports the readings, organises them by project, analyses them with statistics and charts and produces the inspection report. Being the interface common to thickness gauges and flaw detectors, it makes it possible to keep a single archive format even when the campaigns are carried out with different instruments.
The condition for the trend to be readable is the consistency of the campaigns. The points must be identified in the same way, walked in the same order and measured in the same mode: a series in which the mode changes from one year to the next — for example moving from P-E to echo-echo on a coated wall — produces a discontinuity that does not describe a real phenomenon.
Recommended instruments
| Item | Use |
|---|---|
| DakMaster | Archive by project, statistics, charts and inspection report |
| Dakota CMX10-DL | Repeated corrosion monitoring campaigns on plant |
| Dakota MX1-DL | A-Scan and B-Scan with waveform storage |
| Dakota MultiMax | 4-channel remote monitoring for continuous readings |
Frequently asked questions
Yes, provided the points are identified in the same way in all campaigns. This is why it is advisable to define the structure of the points at the first inspection and keep it unchanged over time.
The identification of the points inspected, the instrument and probe used, the calibration performed and the measurement mode applied. These are the details that make it possible to reconstruct how the value was obtained and to repeat the inspection under the same conditions.
Yes, because it introduces into the series a discontinuity that does not correspond to a real phenomenon. On a coated wall, for example, moving from pulse-echo to echo-echo changes what is included in the reading: the mode must be kept constant throughout the history of the point.
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Further information and contacts
Systems division and sensor integration partner : www.roder.it
More information about RODER SRL : about us
Contact for general information : info@roder.it
Contact for information about these products : info@roder.it
The information contained on this web page is provided for information purposes only. Although it has been compiled with the utmost care, it does not constitute a contractual offer or a binding commitment to supply. It may contain transcription, translation or typographical errors. For precise and up-to-date information, please contact our company directly.
Some images on this website have been intentionally generated using Artificial Intelligence (AI). This is because, for many applications and projects, it is not possible to disclose photographs of the installation or of the actual system due to confidentiality agreements, confidentiality clauses and non-disclosure agreements (NDAs).