Frequently Asked Questions
The AUS40 is a Marine Urea Solution for marine vessels’ Selective Catalytic Reduction (SCR) systems. It is crucial in reducing harmful nitrogen oxide (NOx) emissions and ensuring compliance with international environmental regulations.
Minimizing NOx emissions is vital for several reasons. First and foremost, NOx is a major contributor to air pollution and can adversely affect human health and the environment. Reducing NOx emissions can improve air quality and mitigate the negative impact on respiratory health. Additionally, controlling NOx emissions helps to address climate change by reducing the formation of ozone and smog, which are greenhouse gases.
The AUS40 solution works through Selective Catalytic Reduction (SCR). When introduced into the flue gas stream of a marine vessel, the solution breaks down into various components, with ammonia being the key one. The ammonia reacts strongly with the NOx present in the exhaust gases, converting it into harmless nitrogen and water vapour. This chemical reaction occurs within the SCR system, effectively reducing NOx emissions and promoting cleaner and greener maritime operations.
No, marine vessel emissions cannot be effectively controlled without the Selective Catalytic Reduction (SCR) system, unless the vessel fulfils the conditions set by the International Convention for the Prevention of Pollution from Ships (MARPOL). The SCR system, utilizing the AUS40 solution, provides a reliable and efficient method for reducing NOx emissions to meet the stringent regulatory requirements imposed by international maritime authorities.
AUS40 Solution, or Marine Urea Solution, is chosen for SCR systems due to its non-hazardous nature and safer handling than other alternatives. Marine SCR system manufacturers widely adopt the 40% concentration because it has been proven to be the most efficient ratio. Using 40% AUS40 Solution enables the system to treat more exhaust with the same volume, resulting in longer-lasting and cost-effective NOx reduction.
The alternative to AUS40 Solution is the ammonia solution. However, ammonia is highly corrosive and poses significant safety risks during transportation, supply, and handling. Special licenses and permits are usually required in most countries to deal with ammonia due to its dangerous nature. Considering these safety concerns, AUS40 remains the preferred and safest choice for minimizing NOx emissions in marine vessels.
Good quality AUS40 Solution, also known as Marine Urea, is paramount for the optimal functioning of a marine SCR system. The catalyst is a costly component crucial in reducing NOx emissions within the SCR system. When poor quality AUS40 Solution is introduced, impurities can accumulate and clog the SCR catalyst, rendering it less effective or useless. This can lead to the catalyst requiring premature replacement, potential issues with other system components, and failing NOx emission tests during port calls, resulting in penalties or delays.
Choosing reliable and reputable AUS40 Solution suppliers ensures the integrity and longevity of the SCR system while maintaining compliance with environmental regulations. AUS40 remains the most reliable source for AUS40 global supply for marine vessels, ensuring the highest quality standards are met.
Using poor quality AUS40 solution in a marine SCR system can have significant consequences, ranging from damage to the catalyst to system malfunctions and compliance issues. Here are some potential outcomes of using a subpar AUS40 solution:
Catalyst Damage: The catalyst within the SCR system is vital for facilitating the chemical reactions that reduce NOx emissions. Poor quality AUS40 solution may contain impurities or contaminants that can accumulate on the catalyst surface, leading to deterioration or clogging. As a result, the catalyst’s effectiveness in converting NOx into harmless nitrogen and water vapour diminishes, compromising the overall performance of the SCR system.
System Malfunctions: When the catalyst is compromised due to a low-quality AUS40 solution, it can result in system malfunctions. These malfunctions may include reduced efficiency in NOx reduction, decreased system responsiveness, or even complete failure of the SCR system. System malfunctions undermine the vessel’s efforts to minimize emissions and disrupt its compliance with environmental regulations.
Compliance Issues: Poor quality AUS40 solutions can lead to compliance issues with international environmental regulations governing NOx emissions in marine vessels. The regulatory authorities impose strict limits on NOx emissions to safeguard air quality and reduce the impact on human health and the environment. If the vessel fails to meet the required NOx reduction standards during emission tests, it may face penalties, fines, or port access restrictions. Compliance issues can also harm the vessel’s reputation and hinder its ability to operate smoothly in international waters.
To identify and source good quality AUS40 solutions, it is essential to follow these guidelines and consider the following factors:
Supplier Reputation: Research and select suppliers with a proven track record of providing reliable and high-quality AUS40 solutions. Look for suppliers who have established themselves in the industry and have positive reviews or testimonials from satisfied customers.
Quality Certifications: Ensure the supplier has the necessary certifications and accreditations, such as ISO 9001, ISO 14001, or other relevant quality standards. These certifications indicate that the supplier follows stringent quality control processes and maintains consistent product quality.
Compliance with Standards: Verify that the AUS40 solution offered by the supplier complies with the relevant international standards and specifications for marine SCR systems. These standards may include guidelines set by organizations like the International Maritime Organization (IMO) or regional regulatory bodies.
Transparent Product Information: A reliable supplier should provide comprehensive product information, including specifications, composition, and test results. This transparency allows you to evaluate the quality of the AUS40 solution and ensures that it meets your vessel’s requirements.
Sampling and Testing: Consider requesting samples from potential suppliers for testing purposes. Analyzing the AUS40 solution through independent laboratory testing can help verify its quality, purity, and absence of contaminants.
Supply Chain Traceability: Inquire about the supplier’s supply chain and their ability to trace the origin of the AUS40 solution. Understanding the supply chain ensures accountability and helps identify any potential risks or quality issues that might arise.
Technical Support and Expertise: Opt for suppliers who provide technical support and have knowledgeable staff who can offer guidance on AUS40 solution usage, storage, and handling. Access to reliable technical support can help address any concerns or challenges that may arise while using the AUS40 solution.
Urea Handling
Urea should be stored inside a tank inside the vessel. The tank is made of compliant material or coating stipulated by ISO 18611.
- Always refer to the AUS40 Solution supplier’s Safety Data Sheet (SDS).
- In the case of spillage, wipe the area dry and rinse the area with plenty of water.
- When someone is accidentally splashed with the AUS40 Solution, immediately rinse the affected area with water and change out of the wet clothes.
When it is decomposed, the urea solution is broken down into carbon dioxide and ammonia. As it can also be found in urine, ammonia causes the urea solution to smell similarly.
This is a very common misconception. The smell is not an indicator of urea concentration as everyone’s sense of smell is subjective and highly inaccurate. To determine the concentration of the urea solution, always rely on scientific methods. You can refer to the supplier Certificate of Assessment (COA) to find out more.
The freezing point of AUS40 Solution is approximately around 0 degree Celsius (0°C).