Industrial Diagnose

 
  • Vibration Analysis
  • Oil Analysis
  • Flow meter proving
  • Infrared thermography
  • Online Safety Relief Valve Testing
  • Tank Floor Inspection

Vibration Analysis

We use vibration analysis as a tool for machinery condition monitoring. In order to reach the best result, we analyse vibration trend, spectral time and waveform.

We rely on Peakvue methodology (is similar to the classic demodulation methodology with the exception that the signal never goes through a low pass filter) to detect faults from early phase and Autocorrelation methodology to evidence the fault under a waveform being able to have a fault finding earlier than under a classical vibration analysis.

Having certified and skilled technicians, reliable and updated CMMS software we are able to provide all the advantages of well performed vibration analysis:

  • Covering a wide range of rotating machinery
  • Know-how and archive data and trends of over 10 years
  • in-time fault detection
  • corrective maintenance planning (no down-times)
  • proper spare parts planning and purchasing
  • reduce risk of damaging the machinery

Oil Analysis

This condition monitoring technique provides valuable information regarding mechanical wear, oil contamination, oil degradation and chemical properties of the oil.

We use and exploit this technique as a predictive maintenance tool, building database and history.

By determining the oil chemical properties, contamination with ferrous and non-ferrous solid particles, contamination with insolvable liquids and determine the nature and form of the found particles we can evaluate wear condition of machinery internals, keep the machinery under operating parameters, create a customized oiling program cycle and non the least generate cost savings due to non-prevented corrective maintenance.

Flow Meter Proving

Within our Metrology department we perform test, calibration and commissioning for fiscal and non-fiscal oil products and LPG metering systems in any part of the plant: units, tank farms and terminals.

We have the advantage of using a mobile laboratory (Prover or Master meter) equipped with 2 Coriolis meters an OMNI 3000 computer, dedicated software and auxiliaries.

Proving is needed to accurately determine if the fluctuation of the fluid properties and of the process conditions affect the meter calibration under operating medium. We perform proving by comparing a flow rate, which passes through a meter under testing in operating conditions, with a known reference flow rate having in scope to establish a Meter Correction Factor that once implemented, will balance the flow rates.

We perform all test on-site meaning that the client will have minimum production down-time (we only need time to connect in series with the flow-meter), we work with real process condition (live data for temperature and pressure), we calculate a Meter factor with the flow rate under control (the Meter factor is calculated taking into account all flow batches which may vary during the process), we can deliver both a mass result and a volumetric result (due to Coriolis meters), we provide possibility of multiple adjustments by product type and flow batch, we provide accuracy by providing only one uncertainty margin ranging between 0.1% and 0.3% and at the end we will also assist or directly implement the needed corrections.

Industrial Diagnose - Infrared Thermography

As a condition monitoring technique Infrared thermography is a non-destructive and non-contact survey method that helps identify problems and defects by detecting invisible infrared energy produced by the target object and converting it into a visible image (thermogram), used for a quantitative measure and analysis.

Rominserv have been using this versatile technique for over a decade, perfecting especially the refinery range of equipment, investing in tools, CMMS software and human training, being able at this moment to offer both effective results and real value in terms of infrared condition monitoring services.

We use infrared monitoring on general application where the temperature doesn’t exceed 350 degrees Celsius like isolators, circuit breakers, conductors, power lines, switches, transformers, contactors, miscellaneous electric apparatus, electric motors, rotating equipment, insulated surfaces; and on particular application surveying objects with temperature between 300 and 1500 degrees Celsius and objects placed behind a flame - furnace tubes survey and inspection for scaling, overheating, leaks, coke build up or evaluate burner efficiency.

In-situ Safety Relief Valve Testing

We own a versatile equipment called PrevenTest that give us the possibility to provide In-situ safety relief valve testing.

Testing is performed under process and operating conditions.

The equipment can proof and correct, if necessary, performance of the safety valve.

The equipment is ATEX 137 certified version, having no limit of work environment, having an extended safety valve database from different manufacturers.

The equipment operates under software that will recognize the set pressure of the valve and will create a detailed test certificate after the test.

The operator is a trained and certified engineer with over 15 years of experience in pressured static equipment.

The advantages are multiple for the client: there is no need to shut-down the plant or the installation, testing is done under process parameters not under laboratory reference parameters, safety valve operating performance history can be recorded, the intervention can be repeated any time the client considers he has to test the safety valve.

Tank Floor Inspection

Through our NDT Laboratory we can provide tank floor inspection solutions.

The flagship methodology for tank floor inspection is Magnetic Flux Leakage (MFL) inspection. Being equipped with a motorised Floormap VS2 MFL scanner our engineers will locate corrosion and accurately determine their area.

The operators will scan and map all the plates of the tank floor and issue a comprehensive and user-friendly report. The off-line reporting software automatically produces a CAD drawing (a map) of the tank floor with the defects being positioned to within 30mm accuracy.

All captured data, over 20% loss of the nominal plate thickness, is re-analyzed to identify the defect profile and separate the corrosion into 1 of 3 classes. Different sizing algorithms are applied to each class of corrosion ensuring enhanced defect sizing even on badly corroded floors where small diameter deep pits may otherwise have been undersized.

The NDT Laboratory will perform a range of additional testing for fillet and lap welds, collect the data and generate a full inspection report. The software of the scanner allows subsequent inspection data to be overlaid and corrosion progress measured.

The proven advantages for the client are: full scanning and inspection of the floor tank, physical evidence of floor condition by generating a color coded graphical map of the floor tank and individual plates, exponentially more accurate than manual and classical tank inspection and the ability to accurately design patch plates