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Urea Ammonium Nitrate Solution (UAN) is a colorless liquid with a slight ammonia odor that is produced by combining urea, nitric acid, and ammonia into a liquid solution. Farmers prefer UAN because it can be applied more uniformly than non-liquid forms of fertilizers.
In the United States, UAN is transported via rail, truck, and barge. It is typically a splash loading operation when loaded into trucks or railcars via loading arms. UAN itself does not pose an inhalation hazard. However, decomposition of UAN may produce nitrogen oxide and ammonia vapor, so operator diligence of vapors must be observed. Vapor recovery, while not required, should be considered while operators are on top of the vehicles during the loading process to further increase the level of safety during the loading/unloading process.
UAN is typically transported in 20,500-gallon tank cars. The rails cars themselves are 9′ outside diameter with an overall length of ~47′, with offset crashbox openings of varying length and widths.View Full Text
Typical UAN Loading Platform
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Below are some of the loading and unloading solutions for illustrative purposes only. Our experts will work with you and your team for a custom solution to suit your needs.
UAN Loading Arms
UAN is not a hazardous product, but it is extremely corrosive to zinc, copper, brass, bronze, and iron. Aluminum and carbon steel are less susceptible, but stainless steel is the widely accepted material of choice for loading systems. Couple the arm with PTFE seals and you have a good combination of corrosion-resistant materials that will hold up to the rigors of UAN loading.
UAN is generally not considered an inhalation hazard. Therefore, vapor recovery is not mandated but recommended in facilities in close proximity to populated areas.
Loading Gangways and Safety Cages
A wider access gangway (36″-48″ is preferable) as it helps improve access and egress to and from the vessel. In addition, a wider gangway will reduce the risk of the operator’s PPE getting caught, torn or damaged, and will improve productivity and safety. Powered gangway solutions are also an option, with both hydraulic and pneumatic solutions being commonly used.
Each gangway will be fitted with a two-rail safety cage for the railcar crash box. This will be a centered 7’x8’ safety cage to sit directly over the cashbox. This will provide a safe, secure work environment for your operator when connected to their breathing apparatus
GX SELF-ADJUSTING STAIR (SAS) GANGWAY
SafeRack’s NEW GX SAS gangways uses Retractalok power-assist technology allowing operators to raise or lower effortlessly, light as a feather to lift, solid as a rock. Tested in the most critical applications, this revolutionary new gangway outperforms all others. Available in multiple lengths and widths. Learn More
UAN Eye Wash/Drench Showers
ANSI guidelines state that an Eye Wash/Drench Showers need to be located 10 seconds or 55’ (16.8m) from contaminants or hazardous materials.
Eyewash stations need to be on the same horizontal plane with no obstructions.
Therefore, we would propose the installation of a standard combination Drench Shower/Eyewash Unit, which will save limited space and fit easily into any work environment.
UAN Spill Containment
Spill containment pans will be provided at the point of loading operations and is an essential piece of equipment in overall site safety and environmental protection
While UAN is not flammable, industry best practice includes the grounding of all vessels before starting the (un)loading process.
- Vehicle grounding and bonding — ensure true grounding before product flow is permitted
- Explosion-proof enclosures — meet or exceed UL, CSA and Ex requirements
Safety Gates for UAN Loading
Safety Gates will be installed at the top of stairs and any other openings to ensure operator safety at all times.
YellowGate Safety Gates
SafeRack’s line of industrial safety gates is the most flexible product on the market with the ability span openings between 16” and 36” and is field adjustable with nothing more than a wrench. Learn More
- Lighting – Lighting both over and under the platform will be provided. For overcast days or second shift, lighting is essential for improved safety and improved productivity.
- Platform & Canopies – Full platform canopies reduce exposure to the elements and improve the safe and productive loading operation from the operator’s perspective.
- Operator Shelter – Depending on your site requirements, consideration should be given to the requirement of an operator or guard building on the loading platform. This can be customized to meet specific site requirements
- Wheel Chocks – Railcar Wheel Chocks provide fast blocking of all types of railcars and meet OSHA regulations to safely prevent railroad cars from moving during loading or unloading operations. This is a requirement by the Department of Homeland Security
Personal Protective Equipment PPE Requirements
Eye/Face Protection: Wear chemical safety goggles. A face shield (with safety goggles) may also be necessary.
Skin Protection: Wear liquid resistant clothing e.g. gloves, aprons, boots. Safety glasses or goggles are recommended.
* For illustrative purposes only. Our experts will work with you and your team for a custom solution to suit your needs
Urea Ammonium Nitrate (UAN) 101
Things to know about UAN
UAN is a colorless liquid with a slight ammonia odor that is produced by combining urea, nitric acid, and ammonia into a liquid solution. UAN’s nitrogen content typically ranges from 28 to 32 percent. Farmers prefer UAN because it can be applied more uniformly than non-liquid forms of fertilizers. It can also be mixed with herbicides, pesticides, and other nutrients, enabling farmers to reduce costs by spraying once versus multiple applications. It also allows for improved safety versus anhydrous ammonia or dry ammonium nitrate. It’s easy to handle and apply accurately, plus it’s not likely to be stolen for illegal use.
UAN is very corrosive to most metal surfaces. When not properly managed, UAN corrosion can cause serious damage to pumps, pipelines, storage tanks, and access equipment.
UAN is not flammable. Use water to extinguish a fire involving UAN if the water is compatible with the burning material
Customer Reviews4 5As always, great price, quality and customer service.
We were able to assemble and erect the platforms and rack quickly. They are performing as designed, keeping the drivers safe and reducing liability overall. This is the third rack we have ordered from SafeRack. As always, great price, quality and customer service.By Ryan Kynard from Trident Structures on 6/7/135 5Our expectations were met, response was timely and complete.Simple, straightforward designs. While we have not installed equipment yet, the overall quality of fabrication appears to be good. There are innovations in the details that will enhance the overall simplicity of it. We did have a small snafu regarding deliver/shipment dates and times. Might be able to improve communications with customer so we can coordinate unloading more efficiently.By Perry Everett from Shell Chemical LP on 10/6/165 5Excellent customer service.
I received my product within a week of ordering. The part I needed had a different name from what I was calling it, but my salesman knew exactly what I needed. This purchase could not have gone any better. Everything was great.By Josh Fuentes from Titan Lansing Transloading on 2/8/185 5SafeRack was probably the most willing and happy to help with any issues or questions I had.
Fixing some ergonomic issues within our pipeline station, accessing certain valves and a few piping crossovers. The product has not been delivered yet but I assume it will arrive very soon.By Lexi Wasan from Marathon Pipe Line LLC on 6/27/195 5They did all the foot work.
After getting SafeRack involved in trying to find a ladder for our purpose they did all the foot work in finding someone to build the ladder for us. We had several phone follow up calls from SafeRack after they found out what we needed until they found someone to build the ladder for us. We tried to get the original vendor to make the ladder for us and they said they could not. SafeRack said give us a chance to find someone to build it and they did. And we really appreciate what Mark and Tom did on finding a ladder for us.By Floyd Billings from Lucite International on 3/23/114 5Very positive group of people in sales and customer service.
Ray Evans was very responsive and helpful. Very positive group of people in sales and customer service.By Jim Burch from GenOn on 5/3/11
Is your plant or facility compliant with ANSI, OSHA, and local safety codes? We can help!
EMERGENCY EYEWASHES / SHOWER EQUIPMENT AND THE ANSI/ISEA Z358.1 – 2014 STANDARD
Following eye contact, you must start washing with water immediately to prevent permanent damage. In the event of skin contact, you must start washing with water immediately to prevent slow-healing chemical burns.
Are you aware that ANSI guidelines state that Eye Wash/Drench Showers need to be located 10 seconds or 55′ from contaminates or hazardous materials and located on the same horizontal plane, with no obstructions? If bottom loading/unloading, an additional shower should be located at grade as well. SafeRack provides the above equipment plus much more needed to keep employees safe and expedite bulk chemical loading and unloading.
OSHA Regulation Experts – Does your existing chemical safety equipment or chemical loading systems meet OSHA’s latest requirements? SafeRack’s professional technical sales consultants are available to meet with your team to make recommendations to keep your facility in front of OSHA’s ever-changing country and region-specific standards and regulations, including lifeline and trolley beam fall arrest systems, metal stairs, and access platforms.
Customer Reviews4 5SafeRack is our sole provider of railcar pans.
Phyllis was, and always has been, very easy to work with and makes ordering your products a real pleasure. Cost, quality, and reliability will definitely make SafeRack our sole provider of railcar pans.By Jeff Hughes from A&B Welding on 5/7/135 5My rep, Brandon Harrison, was highly capable.
My rep, Brandon Harrison, was highly capable. It was an unplanned replacement of an existing platform. Not matching the existing carriage system would prevent an easy replacement. Cost of the rack could have also prevented the purchase, but a good design gives a good final product that was easy to install and easy to use. The use of the unloading platform was not intuitive to some operators. I found it best to push the top step to start lowering the rack. Some operators just used the side handles with much more difficulty. A placard that says push here may be useful. Overall, I would recommend this product, it feels sturdy, has a good safety color pattern, and is easy to maneuver.By Doug Stanek from Calumet Specialties on 10/13/165 5I consider all areas to be excellent.
Every time I reach out to Molly, she is quick to respond or if needed to do a sight visit she is readily available. Molly does an excellent job of responding to our needs. I would recommend buying these products. Products are high quality and competitively priced.By Julio Delgado from The Lubrizol Corporation on 4/18/175 5I’ll ask for Phyllis Sikes when I need any help in the future.
I was very pleased with the person I dealt with over the phone, Phyllis Sikes. She was very helpful and on time with all the questions and information the I required. I was very pleased. In the future when I will need more parts, this is the person that I would ask for. Thank you for a great experience, very responsive.By Liliana Serb from Kemira Water Solutions on 11/3/105 5The railcar access platform was not only safe, but was also fully OSHA compliant.
The benefits of your product are that it complies with fall legislation and quick delivery. It provided safe access for rail cars. All departments were responsive and answered any questions quickly and effectively. Charles MacEachern is very good at answering and returning calls – the order went very well.By Daryl Lucyshen from Brenntag on 12/1/105 5Quality, customer service and price.
We liked the easy assembly, quality, customer service and price.By Andrea Kluever-Jewkes from Fluor Industrial Services on 8/19/15
The SafeRack approach is a collaborative one. Let’s call it The SafeRack Way. We have, over many years amassed a great deal of experience and understanding of the safety aspects involved in loading road tankers and railcars, as well as the behavioral habits of the operators.
Experts In Chemical Loading
- Aluminum Sulfate
- Ammonium Nitrate
- DEF (Diesel Exhaust Fluid)
- Dodecylbenzene Sulfonic Acid
- Ethyl Chloride
- Ferrous Chloride
- Hydrochloric Acid
- Hydrogen Peroxide
- Methyl Ethyl Ketone
- Molten Sulphur
- Nitric Acid
- Renewable Diesel
- Sodium Hypochlorite
- Sulfuric Acid
- Sulfur Dioxide
- Titanium Tetrachloride
- UAN (Urea Ammonium Nitrate)
- Vinyl Chloride
- Specialty Chemical
North America’s largest loading terminal
World-leading designer, manufacturer, and installer of truck and railcar loading platforms
As one of the primary railcar loading points, Hardisty is one of the major crude oil hubs in North America and a major origination point of pipelines that export to the United States. SCS was asked to supply and construct a SafeRack crude oil loadout terminal spanning nearly half a mile. The USD Hardisty terminal can load up to two 120-railcar unit trains per day and consists of a fixed loading rack with 62 railcar loading positions enclosed, separate control, operator and mechanical buildings, as well as a unit train staging area and loop tracks capable of holding multiple unit trains simultaneously. SCS also supplied and installed boom-supported loading arms with supply and vapor management systems.
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Located in South Carolina
Located in South Carolina
Located in South Carolina
Located in South Carolina
Located in South Carolina