Minimising the risk of boil-over

It is extremely important that the driver always makes sure that the tank is free of water or aqueous products before loading bitumen.

When water comes into contact with hot bitumen, a powerful reaction occurs. This is because when water is heated to the temperature of the bitumen, it vaporises and expands. The risk of these kinds of accidents, known as boil-over, is particularly high if hot bitumen is loaded into a tanker that previously transported emulsion or another product with a high water content.

Other risk factors are if the tank has not been used for a long time, as condensation can easily form, or if it has been left standing open. In just a few seconds, 10 litres of water can expand to form 20,000 litres of steam. When the pressurised steam passes through the liquid bitumen, a hot foam is formed that is forced out through the manhole or, if the tank is closed, causes an explosion.

In other words, it is extremely important that the driver always makes sure that the tank is free of water or aqueous products before loading.


To raise the safety awareness regarding boil-over, Eurobitume has produced a practical manual in four steps. You can find it here.

Noted

Nynas appoints Vice President Group Strategy & Sustainable Development

Johan Andersson is appointed Vice President Group Strategy & Sustainable Development in Nynas. The combined position marks Nynas intensified ambitions.

Noted

Nynas UK announce their future plans for the bitumen business in the UK

Nynas UK today announce that they will be ending the partnership with Navigator Terminals at their Teesside depot at the end of the existing contract in December 2022.

Noted

Pan European approach for Nynas Bitumen

Rafael Renaudeau is appointed Vice President Nynas Bitumen and member of the Nynas Group Executive Committee. He will lead a newly formed organisation to cover all bitumen market areas where Nynas is located. This is a step to further strengthen Nynas position as the true bitumen specialist.

Sustainable Development

The UK’s first carbon-neutral pavement

Using cold recycling technology developed in-house, Aggregate Industries has taken a major step in the direction of more sustainable pavements.

Noted

Webinar on biogenic material in PMB

Nynas invites you to a webinar on 16 September 2021 on why using biogenic material to produce PMB is the most responsible choice.

More information and registration here


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