HEROSE - LNG fuelling valves

Germany-based HEROSE is one of Europe's leading manufacturers of cryogenic valves. Recently, the group has used its expertise in this field to move into the application of liquefied natural gas for cruise ships. Marketing director Mario Esche tells us more.

What role does the cruise industry play in HEROSE's business activities?

Mario Esche: The cruise industry continues to play an important role in HEROSE's liquefied natural gas (LNG) business. With the decision of cruise companies to change their fuelling concepts to LNG, HEROSE is stepping into the picture.

The use of LNG as fuel for ships has considerable environmental advantages, including lower emissions of carbon dioxide, sulphur dioxide and nitrogen oxides. We offer a wide range of valves for marine installations, meeting extreme demands regarding fire safety. We have also developed complete solutions for the associated infrastructure for the storage and transportation of LNG.

What are HEROSE's main applications in the LNG market?

LNG fuelling is just one of HEROSE's four focuses. We are active in the small-scale LNG business for transport, storage, processing and fuelling.

In transport, this includes special road trailers used to transport LNG from the liquid gas storage facility to the users' satellite stations. Because of frequent filling, transportation and unloading, they are subjected to extreme stresses. HEROSE supplies the valves, approved for LNG according to the DIN EN 12567 standard.

Cryogenic LNG is stored in small-scale tank facilities with capacities of 10,000-100,000m³. HEROSE valves have proved themselves in numerous tank-storage filling and removal lines, including safety-relevant valves, which are fire safe according to EN ISO 10497.

In processing, we supply our solutions according to the customer's specifications and requirements; increasing numbers of decentralised liquefaction and regasification units are being constructed. We supply a wide range of valves to cater for the various process requirements.

All four application areas are dependent on one another. You need to have the infrastructure to make the LNG available for the end-user to use it as fuel.

What notable projects are you working on?

We have previously secured orders for ro-pax ferries in Scandinavia; Bergensfjord and Stavangerfjord from Fjordline have been sailing with our valves for years, for example.

In 2016, a new ferry belonging to Tallink was equipped with our valves for the LNG fuelling system. The ship will be powered entirely by LNG and will connect the cities of Helsinki and Tallinn.

For the new construction, HEROSE is supplying many valves to be installed between the LNG tank and the engines. These are exclusively stainless steel valves in which, for safety reasons, the actuated systems are equipped with a special locking device called Alcatraz.

At the moment, we are manufacturing valves for cruise ships for a big cruise-vessel operator that will equip its vessel with LNG-powered engines in the future.

HEROSE also supplies emergency shutdown (ESD) valves; how do they work?

ESD valves are designed to close an LNG filling line within seconds to stop the filling process in an emergency. They are optimally designed with a view to the overall concept of the system and the actuators under installation conditions. This includes the medium and pressure of the control air, as well as the actuation times of spring-closing valves as a function of the dimensioning of the solenoid pilot valves.

The 'open', 'close' and 'emergency manual actuation' positions are reliably detected using sensors. In addition, the opening and closing operation of the valve is controlled by runtime monitoring. HEROSE valves are designed for the extreme temperature changes involved in LNG refuelling - dropping as low as -162°C - and the extreme ambient conditions prevailing during offshore applications.

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URL: www.herose.com

HEROSE’s headquarters in Bad Oldesloe, Germany.
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