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Pulp & Paper

Dryer Rolls

Dryer Rolls

Pulp & Paper

Specific Services

Longitudinal thickness strips by robotic PAUT

Longitudinal thickness strips by robotic PAUT

Longitudinal strips of phased-array ultrasonic thickness measurements can be recorded according with axial data position, then quickly processed to obtain...

Longitudinal strips of phased-array ultrasonic thickness measurements can be recorded according with axial data position, then quickly processed to obtain detailed thickness strips, even in Excel data format.

 

Advantages :

  • Efficient and detailed thickness mapping
  • Data corrected according to the measured ultrasonic velocity
  • Deliverable data in Excel format for monitoring progress over time
  • Magnetic scanner, also effective for top rolls


To consider :

  • Requires some water irrigation to the contact surface


Technician Certifications:

  • ASNT, SNT-TC-1A, PAUT
  • ASNT, UT Level 3

Internal immersive inspection, no entry

Internal immersive inspection, no entry

We have developed a methodology to perform a full internal inspection of the rolls without entering it. Data is captured in 360 video format.   Advantages...

We have developed a methodology to perform a full internal inspection of the rolls without entering it. Data is captured in 360 video format.

 

Advantages :

  • Limit entry into confined spaces in these very restricted accesses
  • Capture and recording of the entire internal surface, including damage and their profile for monitoring over time

 

To note :

  • May not be applicable to rolls with very limited space near the manhole
  • When damage is observed, it is likely that entry into the confined space cannot be avoided to perform a more detailed inspection

Bolts Inspection

Bolts Inspection

The ultrasonic testing method is used for the inspection of bolts in place. It is possible to detect if a bolt is cracked from only one end.   Advantages...

The ultrasonic testing method is used for the inspection of bolts in place. It is possible to detect if a bolt is cracked from only one end.

 

Advantages :

  • Excellent sensitivity
  • Simple and quick to execute

 

To consider :

  • The end of the bolts must be essentially flat
  • Phased-array UT can be used for more sensitivity

 

Technician Certifications:

  • ASNT, SNT-TC-1A, UT, Level 2
  • CGSB, UT, Level 1 or 2

Surface crack detection using magnetic particles

Surface crack detection using magnetic particles

Magnetic particles non-destructive testing method is very efficient and simple to perform. It detects defects emerging at the surface in ferromagnetic...

Magnetic particles non-destructive testing method is very efficient and simple to perform. It detects defects emerging at the surface in ferromagnetic materials. A magnetic yoke is generally used to create the magnetic field.

Different Techniques:

  • Dry powder (yellow or red)
  • Black particles on a white background ("black & white")
  • Fluorescent particles (in dark environment)

Advantages :

  • Fast and effective
  • Excellent probability of detection
  • Applicable on various geometries
  • The dry powder technique is applicable at high temperature

To note :

  • Applicable only to ferromagnetic materials
  • Detection of surface defects, or very close to the surface, only
  • Requires a clean surface (no grease)

Technician Certifications:

  • ASNT, SNT-TC-1A, Magnetic Particles, Level 2
  • CGSB, Magnetic Particles, Level 2

Surface crack detection using penetrant

Surface crack detection using penetrant

The non-destructive liquid penetrant testing method is simple to perform, but requires a few successive steps. This method makes it possible to detect...

The non-destructive liquid penetrant testing method is simple to perform, but requires a few successive steps. This method makes it possible to detect cracks or other defects opened or connected to the surface, and is mostly used for non-ferromagnetic materials, such as aluminum or stainless steels.

 

Advantages :

  • Simple execution
  • Excellent probability of detection
  • Applicable on a wide variety of geometries

 

To note :

  • Requires a very clean, paint-free surface
  • Inspected surface should be rather smooth, difficult to apply on porous surfaces
  • More "messy" process

 

Certification of Inspectors:

  • ASNT, SNT-TC-1A, PT Level 2
  • CGSB, PT Level 2