© 2023 Utah Fire Prevention LLC. All Rights Reserved.
Utah Fire Prevention
HEADQUARTERS 3333 S 900 E Ste 100, Salt Lake City, UT 84106 (801) 935-4012 Utahfirepreventionllc@gmail.com

Hydrostatic Testing

Hydrostatic testing is a process where components, such as piping or pressurized containers are tested for strength and leaks by filling the equipment with pressurized liquid. Utah Fire Prevention is one of the largest DOT hydrostatic testing facilities in Utah. We pride ourselves on our quick turnaround time and our attention to detail. We have the ability to hydrostatic test almost all cylinders with a DOT number including but not limited to: Scuba Tanks Paint Ball Tanks Medical Oxygen Tanks Chlorine Tanks Beverage Tanks Keg orator Tank Nitrogen Tanks Co2 Beverage Tanks SCBA Cylinders Propane Tanks Low-Pressure Aluminum Cylinders Compressed Gas Cylinders High-Pressure Aluminum compressed gas cylinders Fiber-reinforced high-pressure cylinders Marioff High Fog Cylinders Co2 Fire Extinguishers Hydrostatic Testing (Re-qualification) The Process A brief description of the re-qualification process follows. The cylinder has its valve removed and all external and internal surfaces made visible to the DOT (Department of Transportation) qualified hydrostatic tester. The cylinder is externally and internally visually inspected according to required DOT specifications. If it passes, the hydrostatic test is performed. To hydrostatically test the cylinder, it is placed inside of a water jacket (containing water) which is sealed with hydraulic clamps. The cylinder is filled with water. The cylinder is then pressurized with even more water via a high-pressure pump. The cylinder expands a little and displaces water in the water jacket. The amount of water displaced in the water jacket is measured by a precision method. This amount of water displaced signifies how much the cylinder expanded under pressure. When the water pressure returns to normal, the amount of expansion that still exists (the water not taken back into the water jacket) is called the permanent expansion. This information is recorded and compared to DOT requirements to determine if the two expansions of the cylinder adhere to DOT regulations. If the cylinder passes the internal and external inspection and retest, the retester marks the all-metal cylinder by stamping into the metal or labels a composite cylinder with a label sealed in resin. The information marked or labeled includes the RIN identification and the retest date. A record is then made of the re-qualification with the information mandated by the DOT. The retester is required to stamp out cylinder DOT markings with X’s or with the word “Condemned” if the cylinder does not pass the hydrostatic testing process. Cylinders that are fully wrapped with composite materials that do not pass re-qualification are labeled condemned. The cylinder should be rendered unable to hold pressure with the permission of the cylinder owner. It is recommended that all cylinder owners permit the hydrostatic testing facility to render condemned cylinders unable to hold pressure by drilling through the cylinder or terminating valve threads. A record is made of condemned cylinders, according to DOT standards. Other Cylinder Services We Offer: Bead Blasts Scuba Visual Tank Visual Inspections Cylinder Tumbling Fiber Wrapped Tank Repair Eddy-Current Testing (electromagnetic testing on cylinder treads) Valve Removal O2 Cleaning Disposal Utah Fire Prevention is a fully licensed hydro testing facility! How often do I need to have my tanks hydro tested? You can check the testing requirements of your equipment by referring to the DOT sticker on your cylinder. All the information the tester needs is there including the serial number, manufacturer, and manufacture date. If you are uncertain about the testing requirements of your equipment, you can find more information on the DOT website, or just contact All Utah Fire Prevention and we can do the research for you. These common gas cylinders have the following testing requirements: DOT-3AL gas cylinders must be tested every 5 years and have an unlimited life. DOT-3HT gas cylinders must be tested every 3 years and have a 24-year life. SP-Cylinders Special Permit DOT-3AA gas cylinders must be tested every 5 years and have an unlimited life. (Unless stamped with a star (*) in which case the cylinder meets certain specifications and can have a 10-year hydrostatic test life) In the U.S. and Canada, organizations such as ASTM, and ASME specify the guidelines for the different types of pressure vessels. Cylinder Markings

Utah’s Fire Protection Company

© 2021 Utah Fire Prevention LLC. All Rights Reserved.
Utah Fire Prevention
HEADQUARTERS 3333 S 900 E Ste 100, Salt Lake City, UT 84106 (801) 935-4012 Utahfirepreventionllc@gmail.com

Hydrostatic Testing

Hydrostatic testing is a process where components, such as piping or pressurized containers are tested for strength and leaks by filling the equipment with pressurized liquid. Utah Fire Prevention is one of the largest DOT hydrostatic testing facilities in Utah. We pride ourselves on our quick turnaround time and our attention to detail. We have the ability to hydrostatic test almost all cylinders with a DOT number including but not limited to: Scuba Tanks Paint Ball Tanks Medical Oxygen Tanks Chlorine Tanks Beverage Tanks Keg orator Tank Nitrogen Tanks Co2 Beverage Tanks SCBA Cylinders Propane Tanks Low-Pressure Aluminum Cylinders Compressed Gas Cylinders High-Pressure Aluminum compressed gas cylinders Fiber-reinforced high-pressure cylinders Marioff High Fog Cylinders Co2 Fire Extinguishers Hydrostatic Testing (Re-qualification) The Process A brief description of the re-qualification process follows. The cylinder has its valve removed and all external and internal surfaces made visible to the DOT (Department of Transportation) qualified hydrostatic tester. The cylinder is externally and internally visually inspected according to required DOT specifications. If it passes, the hydrostatic test is performed. To hydrostatically test the cylinder, it is placed inside of a water jacket (containing water) which is sealed with hydraulic clamps. The cylinder is filled with water. The cylinder is then pressurized with even more water via a high-pressure pump. The cylinder expands a little and displaces water in the water jacket. The amount of water displaced in the water jacket is measured by a precision method. This amount of water displaced signifies how much the cylinder expanded under pressure. When the water pressure returns to normal, the amount of expansion that still exists (the water not taken back into the water jacket) is called the permanent expansion. This information is recorded and compared to DOT requirements to determine if the two expansions of the cylinder adhere to DOT regulations. If the cylinder passes the internal and external inspection and retest, the retester marks the all- metal cylinder by stamping into the metal or labels a composite cylinder with a label sealed in resin. The information marked or labeled includes the RIN identification and the retest date. A record is then made of the re-qualification with the information mandated by the DOT. The retester is required to stamp out cylinder DOT markings with X’s or with the word “Condemned” if the cylinder does not pass the hydrostatic testing process. Cylinders that are fully wrapped with composite materials that do not pass re-qualification are labeled condemned. The cylinder should be rendered unable to hold pressure with the permission of the cylinder owner. It is recommended that all cylinder owners permit the hydrostatic testing facility to render condemned cylinders unable to hold pressure by drilling through the cylinder or terminating valve threads. A record is made of condemned cylinders, according to DOT standards. Other Cylinder Services We Offer: Bead Blasts Scuba Visual Tank Visual Inspections Cylinder Tumbling Fiber Wrapped Tank Repair Eddy-Current Testing (electromagnetic testing on cylinder treads) Valve Removal O2 Cleaning Disposal Utah Fire Prevention is a fully licensed hydro testing facility! How often do I need to have my tanks hydro tested? You can check the testing requirements of your equipment by referring to the DOT sticker on your cylinder. All the information the tester needs is there including the serial number, manufacturer, and manufacture date. If you are uncertain about the testing requirements of your equipment, you can find more information on the DOT website, or just contact All Utah Fire Prevention and we can do the research for you. These common gas cylinders have the following testing requirements: DOT-3AL gas cylinders must be tested every 5 years and have an unlimited life. DOT-3HT gas cylinders must be tested every 3 years and have a 24-year life. SP-Cylinders Special Permit DOT-3AA gas cylinders must be tested every 5 years and have an unlimited life. (Unless stamped with a star (*) in which case the cylinder meets certain specifications and can have a 10- year hydrostatic test life) In the U.S. and Canada, organizations such as ASTM, and ASME specify the guidelines for the different types of pressure vessels. Cylinder Markings

Utah’s Fire Protection Company

Utah’s Fire Protection Company