The UT (Ultrasonic Testing) tank testing device is one of the non-destructive testing (NDT) equipment used to inspect internal defects, wall thickness, cracks, and structural discontinuities in pressure vessels. This method is based on ultrasonic waves and provides accurate information about the condition of the tank without causing any damage. By using ultrasonic waves, the device detects internal flaws, cracks, and corrosion without harming the tank. This method is applicable to metallic and composite tanks in the automotive, oil and gas, and petrochemical industries, and it helps improve the safety and durability of tanks.
Operating Principle of the UT Tank Testing Device
- Transmission of ultrasonic waves into the tank wall using an ultrasonic probe
- Reflection of waves from defects, cracks, or discontinuities
- Analyzing the returned data and displaying the location and size of the defect on the screen
- Checking the thickness of the tank wall to detect corrosion or loss of strength
2. Applications of UT devices in tank testing
- Identifying cracks and internal defects in the body of CNG, hydrogen, oxygen and other compressed gas tanks
- Wall thickness measurement to detect corrosion or thickness loss due to long-term use
- Welding quality control in metal and composite tanks
- Non-destructive testing (NDT) to increase safety and reduce repair costs
3. Advantages of UT testing over other methods
- Non-destructive and does not damage the tank
- Detecting cracks and defects that are not visible to the eye
- High accuracy in thickness measurement and defect identification
- Possibility of on-site testing without the need to cut or destroy the tank
- High speed in performing tests and providing results
4. Types of UT devices for tank testing
1. Single-probe UT machine: for thickness measurement and corrosion detection
2. Multi-probe UT device (Phased Array): for 3D imaging of internal cracks and defects
3. Automated UT: For fast and accurate testing of tanks in production lines
5. Common standards for UT testing of tanks
ASME Section V – UT Testing Standard for Pressure Vessels
ISO 9809 – Standard for testing metallic gas containers
ISO 11439 – Vehicle CNG Tank Testing Standard
ASTM E317 – Standard Methods for Ultrasonic Testing
Backed by years of valuable experience, the company offers a variety of capabilities to improve test accuracy, increase safety, accelerate the inspection process, and analyze data. These capabilities are categorized into technical, software, hardware, and after-sales services.
1. Technical features and characteristics of the device
- High sensitivity and accuracy
Wall thickness measurement with an accuracy of up to 0.01 mm
Ability to detect internal cracks, structural discontinuities and corrosion
Supports variable frequencies (1 to 15 MHz) for a variety of tanks
- Multipurpose capabilities
Ultrasonic Thickness Measurement (UTM) to check for wall thickness reduction
Welding Flaw Detection to check the quality of tank welds
Phased Array UT (PAUT) technology for 3D imaging of internal cracks and defects
TOFD (Time of Flight Diffraction) testing to detect deep cracks and crack growth over time
- Possibility of testing various types of tanks
Metal tanks (steel, aluminum)
Composite tanks (CNG Type 3 and Type 4)
Hydrogen, oxygen, nitrogen and LPG tanks
Industrial and medical tanks (such as hospital oxygen tanks)
- Live data display and analysis
Digital touch screen display with return signals and thickness graphs
Ability to automatically adjust device sensitivity for more accurate data readings
Automatic alarm if defects are detected or thickness reduction exceeds the standard.
- Peripheral equipment and test performance improvement
Interchangeable probes for testing tanks of different materials and shapes
Automated systems (Robotic UT) for scanning large tanks without the need for an operator
Rotary motors and rail systems for testing cylindrical and spherical tanks
2. Software and digital features
- Intelligent data processing system
Real-time analysis of test results and graphical display of defect maps
Ability to save data to the device’s internal memory or transfer to a computer
Compare new test data with previous tests to check for corrosion trends and damage
- Network connection and remote control
Ability to connect wirelessly to a computer and send data
Supports USB, Wi-Fi, and Bluetooth for sharing reports
Remote control with mobile app to view test results at any time
- Reporting capabilities and compliance with industry standards
Production of standard reports in accordance with ISO, ASME, ASTM and API
Possibility of printing test reports directly via industrial printers connected to the device
3. After-sales service and technical support
- Training and installation of the device
Providing training courses for operators and engineers
Initial setup and calibration by the manufacturer’s technical team