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Although no two Renewable Diesel Loading solutions will be identical, the product itself determines much of the critical design criteria that will ensure that optimum safety and productivity can work together in harmony.
Renewable diesel, also known as hydro-treated vegetable oil (HVO), is made from natural waste like vegetable oil and grease. It’s also 100% renewable because it’s made from products that are constantly being regrown from the earth. The difference between biodiesel and renewable is how it’s processed, and they are not the same.
Because it’s hydrogenated, renewable diesel doesn’t contain oxygen, and therefore users will not encounter the challenges biodiesel presents relating to freezing temperature and storage. Thanks to hydrogenation, renewable diesel also burns cleaner than biodiesel. Also, because it has the same chemical structure as petroleum diesel, renewable diesel can be used in engines that are designed to run on conventional diesel fuel — with no blending required.
On the other hand, traditional Biodiesel is made through a chemical process called transesterification, whereby the glycerin is separated from the fat or vegetable oil. This process results in two by-products – methyl esters and glycerin. Methyl esters is the chemical name for biodiesel. The other by-product is glycerin is used in a variety of products, including soap.View Full Text
In the United States, renewable feed stocks are typically transported via general service insulated or non-insulated 26,000 gallon DOT 111 railcars and over the road tankers. Depending on the viscosity, feedstocks may need to be heated prior to unloading. Railcars are typically top-loaded via carbon steel loading arms or chemical hoses. The rails cars themselves are ~ 9′ outside diameter with an overall length of ~45’ to 50′, with a 6’ x 6’ center opening or off-set crash box openings. Tank truck (un)loading procedures are similar to railcar applications with the trailers meeting established DOT requirements for transporting renewable diesel or other like commodities. Since operators are working at elevated heights, proper Personal Protective Equipment (PPE) is required.
Typical Renewable Diesel 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.
Renewable Diesel Top Loading Arms
Renewable diesel is typically loaded into railcars or tank trucks via boom supported carbon steel loading arms or chemical hoses. The loading arms will often use Viton seals, with a T deflector on the drop-pipe.
The current best loading practice is to use a 3″ chemical hose or a carbon steel loading arm with quick-acting coupling, often in the form of Hammer Unions with stabber pipe. The chemical hose or loading arm will have a top inlet with a control valve to ensure that it is self-draining after use and is supported along the length of a mechanical loading arm to improve handling; this is known as a by-pass arm. You can install one liquid and one vapor arm, or mount both the liquid and vapor hoses on one by-pass arm. The alternative is to have a supported boom top loading arm, top inlet, with vapour cone, and vapour return hose. The arm would be fitted with an overfill device and the vapour hose can be fitted with an over-pressurization sensor.
Break-away couplings can be fitted near the inlet of the hose for additional safety in the event of a premature departure.
Renewable Diesel Un-Loading Arms
These will typically be self-draining carbon steel unloading arms or hoses.
Connections can be flanged, may use a hammer union, or a quick acting coupler. Each arm will be rated at 150lbs and use Viton seals
Renewable Diesel 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 6’x6’ 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 FLAT RAMP ACCESS (FRT) GANGWAY
SafeRack’s NEW GX-FRT is a flat ramp model popular with railcars. It features a slip-resistant walk surface and, with the use of the telescoping extension, eliminates gaps on narrow railcars. Learn More
Renewable Diesel 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.
Renewable Diesel 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
Renewable Diesel Grounding
While not highly flammable, high airborne concentrations can be ignited and pose a significant fire and explosion hazard, especially in confined spaces. Steel containers or vessels of ammonia may also explode when subject to excessive heat or high temperatures. Industry best practice includes the grounding of all vessels prior to 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
Renewable Diesel Safety Gates
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
Renewable Diesel Loading Platform Options
- 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 chemical protective clothing e.g. gloves, aprons, boots. Coveralls or long sleeve shirts and pants in some operations. Wear a chemical protective, full-body encapsulating suit, and self-contained breathing apparatus (SCBA). Suitable materials include: butyl rubber, neoprene rubber, Viton®, Viton®/butyl rubber, Barrier® – PE/PA/PE, Silver Shield® – PE/EVAL/PE, Trellchem® HPS, Trellchem® VPS, Saranex®™, Tychem® BR/LV, Tychem® Responder® CSM, Tychem® TK. The following materials should NOT be used: natural rubber, polyvinyl chloride. Recommendations are NOT valid for very thin neoprene rubber gloves (0.3 mm or less).
Respiratory Protection: Up to 5 ppm:
(APF = 10) Any chemical cartridge respirator with cartridge(s) providing protection against Renewable Diesel*; or Any supplied-air respirator*.
*Reported to cause eye irritation or damage; may require eye protection.
APF = Assigned Protection Factor
Recommendations apply only to National Institute for Occupational Safety and Health (NIOSH) approved respirators. Refer to the NIOSH pocket guide to chemical hazards for more information.
Use a local exhaust ventilation and enclosure, if necessary, to control the amount in the air. Consider using a corrosion-resistant exhaust ventilation system separate from other ventilation systems. It may be necessary to use stringent control measures such as process enclosure to prevent product release into the workplace. Use backup controls (e.g. double mechanical pump seals) to prevent the release of this material due to equipment failure. * For illustrative purposes only. Our experts will work with you and your team for a custom solution to suit your needs
Customer Reviews4 5Responded to every question, dug for details.
Having the engineering wrapped into the pricing for the platforms is huge for safety and liability – big selling point for us. Responded to every question, dug for details and arranged for a site visit to see the product in use.By Mike Weissig from McCain Foods Canada on 10/1/155 5We are happy with your service.
We are happy with your service.By Ali Rahmath from Baniyas Oil Field Supplies on 7/14/114 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 9/12/125 5This is a solid product that we will use for years.
Product was delivered at the specified time. Your team was very helpful in fitting the install within the project demands. The overall fit and finish is excellent. The best part is that we now feel that fall protection is not an issue at the site anymore. Stephen was good to work with – he kept us on track. The site visit ensured we got what we needed and gave us comfort as we moved forward in the project. We can tell this is a solid product that we will use for years.By Sam Hinson from RPM Wood Finishes Group on 1/4/174 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 6/7/134 5Everyone at SafeRack was very professional.
Solid construction, good paint job, still light enough that all employees can use it. More stable on the railcar than the previous product used, and gives a better feeling of confidence it will work when needed. Everyone at SafeRack was very professional to talk to and got the job done as they said they would, when they said they would.By Bruce Reed from Dow Corning on 3/27/14
Renewable Diesel 101
Things to know about renewable diesel vs. traditional biodiesel
Because of their high flash point, greater than 200 degrees F, both renewable diesel and pure biodiesel can be transported without any DOT placards. However, blended biodiesel does require warning signs if the flash point is lower than 200 degrees F.
As mentioned earlier, biodiesel is made from a diverse mix of resources (feedstock) such as recycled cooking oil, soybean, and animal fats.
Unfortunately, biodiesel can degrade quickly due to oxidation, contact with water and/or microbial activity. In general biodiesel will degrade more quickly than petro-diesel. On one hand, this is a good thing: a biodiesel spill will biodegrade faster and not cause as many environmental issues as a diesel spill. Nevertheless, both fuels will eventually degrade if not handled properly. Biodiesel also has the tendency to gel (freeze) at higher temperatures versus petro-diesel. Therefore, storage and transportation tanks must be designed accordingly. Biodiesel has been known to be less compatible with some elastomers used in the handling of diesel, which can cause the degradation of some materials used in hoses, seals, and gaskets.
Oxidation can be another issue, which causes sediments to form in the fuel, which in turn can cause clogged fuel filters. Biodiesel made from unsaturated fats (i.e. vegetable oils) tends to oxide and degrade faster than biofuel made from saturated fats, such as animal fats.
Storage conditions are also very important. For example, biodiesel should not be stored or transported in copper, bronze, lead, tin or zinc because these metals will hasten degradation. Containers made from aluminum, steel, polyethylene or polypropylene, Teflon, or fiberglass are the recommended choice. Acceptable gasket seal material on process piping and loading arms include Teflon, Viton, and fluorinated plastics.
Heat, sunlight, and oxygen will also cause biodiesel to degrade more rapidly. In addition, if biodiesel will be stored for longer than four to five months, a stability additive should be used, especially in the deep South due to increased temperature and humidity.
Biodiesel can also degrade in the presence of water. During storage and transportation, moisture from the air, or any water in the piping or tanks can contaminate the fuel. Up to 1,500 ppm of water can dissolve in biodiesel, after that limit is reached the excess water is referred to as “free water” This free water causes engines and storage tanks to rust and allows microbes to grow in the fuel. Dissolved in water, biodiesel can cause acids to form in the fuel, which can eventually eat a hole in the storage tank or process piping.
The gel (freeze) point of biodiesel depends on the oil or fat from which it was made. Biodiesel made from saturated fats tends to gel at higher temperatures than those made from unsaturated fats. In general, pure biodiesel made from vegetable (soybean) oil can safely be stored at 45 to 50 degrees F. In cold climates underground tanks can prevent gelling. Above ground tanks will need to be heated or insulated, depending on the location.
On the other hand, the benefits of renewable diesel include:
- Doesn’t gel like traditional biodiesel
- No need to blend with diesel, unlike biodiesel which is typically blended between 5 to 20 percent.
- Compatible with existing infrastructure including current diesel engines
Only properly trained and equipped personnel should be permitted to (un)load tank cars and tank trucks. Operators should wear approved PPE equipment including impervious clothing, footwear, gloves, and goggles. Operators should avoid breathing mists and sprays, and they should wash any exposed skin thoroughly after handling.
First aid measures for exposure to renewable diesel include – removing operators from the source of exposure and into fresh air. Remove contaminated clothing immediately; wash skin thoroughly with soap and water; flush eyes with tepid water for 15 minutes. If ingested do not induce vomiting, but immediately call your local poison control center. Aspiration into the lungs can cause fatal chemical pneumonitis. If ingestion has occurred, assume there is a risk of aspiration into the lungs.
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.
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
- DEF (Diesel Exhaust Fluid)
- UAN (Urea Ammonium Nitrate)
- Hydrochloric Acid
- Molten Sulphur
- Renewable Diesel
- Sodium Hypochlorite
- Sulfuric Acid
- Sulfuric Dioxide
- Titanium Tetrachloride
- 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