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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 Reviews5 5Existing parts that we had is worn that need changed.
The sales team at SafeRack was very helpful and responsive.By Carmelito Lao from Lafarge C/O Financial Services Center on 8/5/195 5SafeRack was able to provide us the equipment we needed fast.
We were very satisfied with the product we purchased from SafeRack a year ago so we decided to purchase an additional for a different location.By Robert Arredondo from Nutrien Ag Solutions on 11/22/195 5Very sturdy, easy to install and the SafeRack rep was very responsive.
This is my second purchase within 6 weeks. Very sturdy, easy to install and the SafeRack rep was very responsive.By John Sealey from London Hospital Lien Service on 9/30/144 5The installers raved about how easy they were to install.
This was the first time we used the ladder gates. The installers raved about how easy they were to install and the fact that they can adjust to meet several different openings were a big factor. We have quite a few ladders with different dimensions and these fit perfect!!By Anthony from The Dow Chemical Company on 3/4/154 5They did a great job and were very safe.
We like the turnkey design. The installation by SafeRack was fantastic. They did a great job and were very safe. Our technicians were very satisfied with their work. Greg Crawford was very responsive and good to work with.By Brandon Grimm from Clariant Corporation on 1/6/114 5Product is very robust and accepted site modifications easily to allow for quick installation.
Charles MacEachern was very quick and came to do a site visit right away. Product is very robust and accepted site modifications easily to allow for quick installation.By David Mirosh from Motor Coach Industries Inc. on 9/12/12
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 5Delivered within an acceptable window.
The gangways were delivered in two months. This was within an acceptable window.By Chris Denton from Nestle USA on 11/7/115 5Custom Metal Work Platform and Stairs
Very satisfied with all contacts of SafeRack, Thank you goes out to Scott who came to our site and helped us in designing, which seems to be fitting our needs nicely. Thank you to Nate and Ashleigh for helping us stay up to speed with our order, very pleasant people to work with. Good people make for a good company Thanks again!By Russ Cron from Town of Camp Verde Wastewater Treatment on 5/24/205 5Very positive experience.
Very positive experience. I was kept in the loop during the entire ordering process. They got started right away. This was very helpful considering it was Thursday evening and SafeRack had to schedule this work to be done over the weekend so I could have my rack by the middle of the following week.By Brian Newton from Norit Americas on 10/17/114 5SafeRack and its people care about doing business the right way.
I ordered a gangway then 3 weeks later ordered another one. 3 weeks after that, another came up for order in our system. When I placed the order, the salesperson responded back making sure I wanted to order a third one. After checking our system, the third one was duplicated and we did not need it. A lot of places would have just filled the order and charged us. That shows how much SafeRack and its people care about doing business the right way with us. I would definitely recommend this product. In fact, I already have.By Robert Parras from Buzzi Unicem on 9/17/135 5It took longer for us to issue the PO than it did to get the product!
Jason is our Super Hero. We call him Captain America… he’s great! It took longer for us to issue the PO than it did to get the product! Thanks again!By Troy McCrery from L-3 Communications on 4/24/124 5We are now set up for safe, stable and reliable outcomes.
We are now set up for safe, stable and reliable outcomes to our daily work.By Dan Thomas from NuStar Logistics, L.P. on 12/8/15
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
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