- ABS issued a ammonia as a marine fuel analyzing the top three factors one should consider when utilizing ammonia as a marine fuel.
- It is done keeping in mind that ammonia has been in the spotlight lately as an alternative fuel for the shipping industry.
- The fuel must be placed in specific storages and specific refrigerated conditions.
A recent news article published in the Safety4sea deals with the three factors to consider in case of using ammonia as a marine fuel.
ABS three factors of ammonia’s use as a marine fuel
- Ammonia offers ship owners and operators a zero-carbon tank-to-wake emissions profile, regardless of fuel source.
- Ammonia’s toxicity requires stringent handling measures and permissible exposure limits to be followed.
- Although there are currently no prescriptive requirements surrounding ammonia as a marine fuel, demonstrating a vessel’s capability to operate on ammonia is advantageous.
What does the guide say?
According to the guide, ammonia is a compound of nitrogen and hydrogen and at atmospheric pressure and normal temperatures is a colorless gas with a characteristic pungent smell.
At higher pressures ammonia becomes a liquid, making it easier to transport and store. The typical heating value for ammonia is similar to methanol.
As with most alternative fuels, it has a lower energy density than fuel oils.
So producing the same energy content would require about 2.4 times more volume as compared to petroleum-based fuels.
What are the requirements of ammonia gas?
Thus, the requirements of ammonia gas include low-temperature service, pressurized storage tanks, flammable gases.
Working with corrosive and toxic materials is key to addressing the safety hazards of using ammonia as a marine fuel.
Some of the considerations when using ammonia as fuel on a vessel are listed below:
- Corrosion
- Design
- Equipment failure
- Cascading failures
- Safety management plan
- Personnel training to reduce human error.
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Source: Safety4Sea