Northeast Pressure Vessel Testing Ultrasonic Testing

Phone: (508) 389-1212
Northeast Pressure Vessel Testing

Please contact us to discuss this further so that you can take advantage of the benefits that ultrasonic testing can bring to your company. 

Northeast Pressure Vessel Testing (NEPVT) is approved by the United States Department of Transportation (DOT) to perform 100 percent, automatic ultrasonic testing of high and low pressure DOT 3A, 3AA, and 3AL gas cylinders in lieu of hydrostatic testing, in accordance with DOT SP-10922 and DOT SP-12607. This proven technology offers an alternative to traditional hydrostatic testing and eliminates the need for the valve to be removed for an internal inspection of the cylinder, making it cost efficient to requalify your compressed gas cylinders.

At our facility in Westborough, MA, there are three ultrasonic testing units ready to requalify your cylinders by our trained operators. 

Ultrasonic testing provides tremendous advantages over hydrostatic testing. These advantages include financial savings, cylinder integrity, environmental benefits, enhanced safety, and maintenance of product integrity in the cylinders. Ultrasonic testing is no longer a new, unproven concept in cylinder testing; it has been in the field for over fifteen years and has become the preferred test method of all major industrial gas companies and re-testers.



Ultrasonic testing requires no product loss, no contamination from effluent, elimination of valve wear, improved asset utilization and lower labor cost. 

Non- destructive test method which maintains the integrity of the cylinder. The problem of corrosion resulting from water introduced during the hydrostatic testing process is eliminated


Faster turnaround with less time required to test, eliminating the number of cylinders out of service, and for the mobile unit, eliminating the cost and time to transport the cylinders to a test site


Reduced risk of human error in test process, especially involving internal visual inspections, finding cracks and corrosion possibly missed


Eliminates the need to dispose of a cylinder’s test water and contents into the environment


Environmental hazards are reduced since gases are not drained from the cylinder prior to retesting; contaminated effluents are not released to the sewer system

Ultrasonic Testing

Cost savings resulting from quick turnaround, reduced handling and trucking, elimination of product loss and improved asset utilization


More accurate test method using direct measurement of wall thickness


Allows requalification without removing the valve, eliminating the wear on the valve, thus extending the valve’s life and reducing valve replacement costs


Eliminates the possibility of product contamination in the cylinder and removes the need to dry the internal vessel


Eliminates product loss or disposal and recovery costs