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Nondestructive Testing (NDT) Services In Maine and New England

Roadsafe LLC supports municipalities, fabricators, contractors, and industrial facilities with local, nondestructive testing (NDT) and NDE services throughout Maine and New England. Our in-house ASNT NDT Level III oversees our NDT program per SNT-TC-1A.

Through nondestructive testing (NDT), we support New England's diverse industrial and infrastructure sectors. Our experience includes shipbuilding and vessel maintenance, rail transportation, aquaculture, manufacturing, fabrication, construction, utilities, and municipal infrastructure. We help clients maintain safe, reliable, and compliant operations through accurate inspection and asset evaluation services.

NDT Services

Ultrasonic Testing (UT)

  • Thickness Surveys
  • Weld Examination
  • Pin, Bolt, & Plate Testing
  • Crack Detection & Sizing

Magnetic Particle Testing (MT)

  • Weld Examination
  • Base Metal Testing
  • Crack Detection & Sizing
  • MC-330 & MC-331 cargo tanks

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Applications of NDT

NDT/NDE services ensure welded connections, pinned joints, part thickness, and component dimensions meet construction specifications and industry quality standards.

Common Structures Tested

  • Industrial Machinery
  • Pump Stations
  • Water & Wastewater Tanks
  • Pressure Vessels
  • Structural Steel
  • Tanker Trailers & Railcars
  • Construction Equipment
  • Ships & Boats

Widely Used By

  • Industrial Facilities
  • Public Works Departments
  • Municipal Facilities
  • Metal Fabricators & Welders
  • General Contractors
  • Heavy Truck Repair Shops
  • Railcar Repair Facilities
  • Ship Builders

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NDT Procedures

We use NDT examination procedures that are in accordance with applicable industry standards such as:

NDT Information Sheets


Structural Testing for Municipalities

Structural Testing for Municipalities

Testing for Fabricators & Contractors

Structural Testing for Fabricators & Contractors

Weld Testing for Heavy Truck Repair Shops

Weld Testing for Heavy Truck Repair Shops


NDT Image Gallery


Ultrasonic thickness testing (UTT)
structural weld testing
Crack detection in welds
testing of MC-330 & MC-331 cargo tanks
Morison tube of propane boilers
Crack detection in welds
testing anchor bolt weld repair
UT on pipe piles
Weld inspection of pipe piles
crack detection on ship welds
Testing of pump station structures
Weld testing in tank cars
Crack indication in weld
MT indication from cracking
Testing of pump station structures
Lack of Penetration behind backing, found with UT
Porosity in the weld crown
Slag Inclusion in weld
Thickness testing of boilers
Magnetic Particle Indication
Crack in Damaged Bridge Girder
Crack in Damaged Bridge Girder
Cracks around bolt holes
Thickness testing of a steel hull
Calibrating UTT Meter
UT on Copper Pot Still
Cracks in motor shaft
magnetic particle testing of MC-330 & MC-331 cargo tanks
Lack of penetration in weld
Lack of penetration in weld
Fluorescent MT indication under UV-A light
Overlap seen visually at toe of weld
Dry MT indication at weld overlap
weld examinations of MC-330 and MC-331 cargo tanks
Crack in weld detected with MT
Ultrasonic Thickness Testing of thin materials
Ultrasonic signal



Common Standards for Nondestructive Testing

Association of American Railroads (AAR)

American Welding Society (AWS)

American Society of Mechanical Engineers (ASME)

American Society for Testing and Materials (ASTM)


Description of NDT Services


Thickness Testing on Steel Plate
Thickness Testing

Ultrasonic Thickness Testing (UTT)

Ultrasonic Thickness Testing (UTT) is a nondestructive examination method used to measure material thickness and evaluate wall loss in new and in-service components, including steel tanks, pump stations, pressure vessels, marine hulls, piping systems, and structural steel. This technique helps verify compliance with design and construction specifications while identifying material loss caused by corrosion, erosion, or wear that could impact structural integrity and service life. UTT utilizes pulse-echo ultrasonic sound waves to accurately determine material thickness and requires access to only one side of the component. For optimal results, the test surface should be reasonably smooth and free of loose scale, rust, and flaking coatings to ensure effective transmission of ultrasonic energy. In many applications, measurements can be obtained through thin, well-bonded coatings such as paint or epoxy linings, eliminating the need for coating removal.

Roadsafe provides UTT services for structural steel, tanks, pump stations, and pressure vessels throughout Maine, New Hampshire, Vermont, Massachusetts, Connecticut, and Rhode Island.




RF UT A-scan

Ultrasonic Straight Beam Testing (UT)

Ultrasonic Straight Beam (Normal Beam) Testing is a nondestructive examination method used to evaluate base materials such as bridge pins, bolts, structural steel members, and raw products for geometric conformance and internal structural condition. This technique detects internal and surface-breaking discontinuities that may compromise structural integrity, including cracks, laminations, voids, and inclusions. The inspection is performed by introducing straight-beam ultrasonic sound waves into the material and typically requires access to only one surface, although examination from multiple surfaces may be beneficial depending on geometry.

Roadsafe provides UT services for bridge pins, bolts, and structural members throughout Maine, New Hampshire, Vermont, Massachusetts, Connecticut, and Rhode Island.



ultrasonic testing
structural weld testing
structural weld testing

Ultrasonic Weld Inspection (UT)

Ultrasonic weld inspection (shear wave testing) is widely used to examine welds in piping systems, structural steel, bridges, bridge piles, boilers, ships, railcars, and other safety-critical structures for defects that could compromise structural integrity. UT is a nondestructive examination method that uses angled ultrasonic sound waves to inspect welds and the adjacent heat-affected zone (HAZ) for discontinuities such as cracks, lack of fusion, incomplete penetration, slag inclusions, and other internal flaws. Reflections from these discontinuities are detected and displayed on an ultrasonic flaw detector, allowing the inspector to locate, characterize, and size indications. To ensure accurate evaluation, the equipment is calibrated using reference standards or calibration blocks made from similar materials and containing known reflectors.

Roadsafe provides weld inspection services for structural steel, piping systems, and pressure vessels throughout Maine, New Hampshire, Vermont, Massachusetts, Connecticut, and Rhode Island.



Magnetic particle indication
Magnetic particle indication
Magnetic particle indication

Magnetic Particle Testing (MT)

Magnetic particle testing (MT) is widely used to inspect welded components and structures including bridges, pressure vessels, MC-330 and MC-331 cargo tanks, and other safety-critical equipment for cracks and discontinuities that could propagate and lead to unsafe conditions. MT is a nondestructive examination method used on ferromagnetic materials to detect surface and near-surface defects such as cracks, laps, seams, and lack of fusion. During the inspection, the component is magnetized and magnetic particles (dry or wet, visible or fluorescent) are applied to the test area. Discontinuities disrupt the magnetic field and create leakage fields that attract the particles, producing visible indications that reveal the location and extent of the defect.

Roadsafe provides MT services for structural steel, pressure vessels, and MC-330 and 331 cargo tanks throughout Maine, New Hampshire, Vermont, Massachusetts, Connecticut, and Rhode Island.



ASNT SNT-TC-1A
ASNT CP-189

NDT Level III Consulting Services

Personnel cerification programs are often based on CP-189 or SNT-TC-1A. Level III consulting services support employers in the development, implementation, and maintenance of effective, compliant Non-Destructive Testing (NDT) programs that are in accordance with these documents. A Level III develops a certification program tailored to the specific needs of the organization and its industry requirements. Personnel receive the required formal classroom instruction and on-the-job training in accordance with the certification program in order to gain the knowledge, skills, and experience necessary to perform their duties at the appropriate levels of responsibility.

Roadsafe provides NDT Level III Consulting Services throughout Maine, New Hampshire, Vermont, Massachusetts, Connceticut, and Rhode Island.


Nondestructive Testing (NDT) Services in Maine & New England

Serving all New England states: We provide nondestructive testing (NDT) and NDE services in Maine, New Hampshire, Vermont, Massachusetts, Connecticut, and Rhode Island.

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Roadsafe LLC