Category: Ultrasonic Evaluation of Portable Cylinders

Roy Williams

Many industries use compressed gas cylinders to store substances such as oxygen, propane, acetylene, or fire suppressants. Structural flaws in a cylinder can turn dangerous resulting in leaks, ruptures, or even deadly explosions. The two primary methods of testing cylinders to detect these potential flaws are hydrostatic testing and ultrasonic examination. The processes of these…

Roy Williams

Many industries use compressed gas cylinders to store substances such as oxygen, propane, acetylene, or fire suppressants. Structural flaws in a cylinder can turn dangerous resulting in leaks, ruptures, or even deadly explosions. The two primary methods of testing cylinders to detect these potential flaws are hydrostatic testing and ultrasonic examination. The processes of these…

Roy Williams

Many industries use compressed gas cylinders to store substances such as oxygen, propane, acetylene, or fire suppressants. Structural flaws in a cylinder can turn dangerous resulting in leaks, ruptures, or even deadly explosions. The two primary methods of testing cylinders to detect these potential flaws are hydrostatic testing and ultrasonic examination. The processes of these…

Roy Williams

The choice of re-qualification testing method for portable cylinders is based on a variety of factors.  In most cases, DOT regulations offer choices.  This 5 part article discusses the different choices when it comes to re-qualification testing methods for portable cylinders. Each part will identify the type of re-qualification testing method and provide a brief…

Roy Williams

The choice of re-qualification testing method for portable cylinders is based on a variety of factors.  In most cases, DOT regulations offer choices. This 5 part article discusses the different choices when it comes to re-qualification testing methods for portable cylinders. Each part will identify the type of re-qualification testing method and provide a brief…

Roy Williams

The choice of re-qualification testing method for portable cylinders is based on a variety of factors.  In most cases, DOT regulations offer choices. This 5 part article discusses the different choices when it comes to re-qualification testing methods for portable cylinders. Each part will identify the type of re-qualification testing method and provide a brief…

Roy Williams

The choice of re-qualification testing method for portable cylinders is based on a variety of factors.  In most cases, DOT regulations offer choices. This 5 part article discusses the different choices when it comes to re-qualification testing methods for portable cylinders. Each part will identify the type of re-qualification testing method and provide a brief…

Roy Williams

The choice of re-qualification testing method for portable cylinders is based on a variety of factors.  In most cases, DOT regulations offer choices. This 5 part article discusses the different choices when it comes to re-qualification testing methods for portable cylinders. Each part will identify the type of re-qualification testing method and provide a brief…

Roy Williams

In accordance with The Code of Federal Regulations, Title 49, re-qualification of portable cylinders means the completion of a visual inspection and the tests required to be performed on a cylinder to determine its suitability for continued service. Regulatory approval of the test facility, personnel and equipment is required for portable cylinder re-qualification. Successful certification…

Roy Williams

It is important that authorized holders of a Re-qualification Identification Number (RIN) conduct a thorough examination of each DOT portable cylinder as part of re-qualification. Two non-destructive test methods are generally used for re-qualification: hydrostatic testing and ultrasonic examination.  Ultrasonic Examination offers several advantages to equipment operators and is the preferred re-qualification methodology because it…

Roy Williams

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…

Roy Williams

Ultrasonic Examination is the most popular and reliable test method for portable cylinders and offers several advantages. Ultrasonic Examination eliminates the need for valve removal and internal visual inspection, thus allowing the cylinder to be tested with residual product. Hydrostatic testing and ultrasonic examination are the two test methods generally used to re-qualify cylinders. Test…

Roy Williams

Ultrasonic Examination is the most popular and reliable test method for portable cylinders and offers several advantages. Ultrasonic Examination eliminates the need for valve removal and internal visual inspection, thus allowing the cylinder to be tested with residual product. DOT pressure vessels (cylinders) require periodic inspections to evaluate the integrity and safety of each vessel….