GPS

Eddy Current

Eddy current inspection is leading the industry for in-service inspections on coated components. Eddy current has the ability to detect surface breaking defects such as in-service cracking under non metallic surface finishes.Services Division offers a complete range of inspection, training and QA/QC services. We integrate innovative technologies with conventional testing methods to ensure the integrity of industrial materials and components as cost effectively as possible. Eddy Current testing is based on measuring the impedance of a coil or inducing electrical currents (Eddy Currents) in a conductive material. Any changes in the coils impedance due to geometry, material changes, or discontinuities- such as pitting, erosion, corrosion, baffle fretting, cracking, and/or other anomalies will disrupt the flow of Eddy Current and produce a representative signal on the Eddy Current Testing instrument.

Eddy Current Applications:

Application Solutions provides highly qualified Eddy Current technicians . The equipment allows the technician to accurately and confidently inspect any tubing in Real-time, by allowing full length recording capabilities. This allows Data Analysis to be performed offline in order to assess damage with the customer.

Applications:

•    Heat Exchangers
•    Condensers
•    Feedwater Heaters
•    AC Chillers (Air Conditioners)

Applications Advantages:

• Sensitivity to gradual wall loss, corrosion, pitting, erosion,
   baffle fretting, cracking and etc.
• Inspection of nonferromagnetic tubing.
• High rate of inspection (80 to 100 tubes per/hr).
• Can distinguish between I.D. and O.D. defect orientation.

Eddy Current has several basic advantages over PT including:

•  More sensitive for detection of tight cracks
•  Can inspect through paint coatings
•  Much faster for small areas
•  Detects SCC in stainless steel pipes
•  Locates cracks in stainless steel vessels/tanks,
   turbine blades

Pulsed Eddy Current

FAILURES DUE TO CORROSION

Failure of steel support structures, piping systems or vessels can be caused by corrosion of the steel under passive fire protection or insulation and visual signs of degradation may not be evident.

Pulsed Eddy Current technology can help detect such hidden corrosion before it becomes a potentially expensive and hazardous problem.

Pulsed Eddy Current inspection approach based on this technology checking for corrosion under passive fire protection or insulation. A detailed visual inspection is carried out to look for signs of degradation and Pulsed Eddy Current technology is used to measure the wall thickness of the metal behind the fire proofing or insulation.

ACCELERATED CORROSION

Degradation of steel can start when water penetrates the interface between the metal and the fireproofing because of faulty seals or inadequate construction. The corrosion products that are created may exert pressure on the passive fire protection and cause it to crack. This can allow more water to reach the steel, which accelerates corrosion.

BENEFITS OF PEC TECHNOLOGY

• PEC technology can be applied in-service, so there is no 
  need to empty the storage spheres.
• No need to remove the passive fire protection. PEC 
  technology can measure through up to 250 mm of material 
  including the reinforcement mesh.
• Performed in service during plant operation
• Monitor to assess CUI or FAC damage
• Accessibility issues minimized by using rope access 
  operators

PEC TECHNOLOGY APPLICATIONS

• For in-service wall thickness monitoring – monitor
  the corrosion rates of critical equipment to facilitate 
  the safe extension of run times and the reduction 
  of shutdown frequency and duration
• To  annular  rings:  detect  corrosion  while atmospheric 
  storage tanks are in service by measuring the wall loss of 
  annular rings.
• In the splash  zone: improve  safety  cost effectively when 
  measuring caisson and riser wall thickness. 
  Readings can be made through marine growth and up 
  to 20 mm of coatings and corrosion products. 
  

Corrosion Under Insulation (CUI)

Without an effective CUI protection program, the damage can be difficult to detect, harder to mitigate, and comes with even greater cost. As the industry's truest one-source provider of asset protection solutions, We Have the resources, knowledge, and subject to implement and manage all phases of CUI program.

Visual & Qualitative Inspection

Our API-certified inspectors then conduct visual inspections to get a first look at the potential problem areas, after which they'll determine and perform the appropriate qualitative inspection technique.

Inspection Preparation

Our expert mechanical service technicians prepare areas for quantitative inspection,through combinations of insulation removal, corrosion mitigation, and surface preparation.

Quantitative Inspection

We can deploy a variety of quantitative inspections to determine corrosion severity,including ultrasonic thickness, phased array, and radiography. Localized vs General corrosion, radiation concerns, and access to the asset guide the decision process.

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