It is a busy time for Gas and Heat, especially in relation to the development of solutions for the use of ammonia as a green fuel in shipping.

After receiving an Approval in Principle (AiP) from RINA for the design of an innovative Ammonia Fuel Supply System (AFSS), a system that - precisely - allows ships to use hydrogen as a fuel carrier, the Livorno-based company received a similar award from Bureau Veritas, this time for a tank (again intended for shipboard applications) capable of carrying both liquefied natural gas (LNG) and ammonia.

Once again, as in the case of RINA, Gas and Heat also wanted to celebrate Bureau Veritas' AiP at the Gastech 2022 exhibition held in Milan.

Unlike the Ammonia Fuel Supply System, to date a solution still 'on paper' and waiting for the first order to be concretely implemented, the dual-purpose tank is in a different condition.

Gas and Heat in fact had already developed it a few years ago, using a particular variant of austenitic steel that has cost and production efficiency advantages over the nickel steel usually used for LNG tanks.

Now that ammonia really seems on the verge of becoming the next fuel for shipping the company therefore wondered if its tanks were capable of carrying this energy carrier as well, and the answer was yes.

However, the validation process was multifaceted: in fact, Bureau Veritas wanted to test the ability of this type of steel to resist Stress Corrosion Cracking (SCC), which is the corrosion exerted by ammonia on materials subjected to physical stress, and the outcome was absolutely positive.

"Innovation has always been and will always be our focus," said Mauro Evangelisti, president of Gas and Heat. "We are confident that the use of this innovative material can enable the production of more competitive and safer components in alternative fuel handling for shipping."

Gas and Heat-as the company itself noted in a note-has already secured two orders for tanks made with this technology: one is for a river barge and one for an ocean-going vessel. In both cases, the units will have dual fuel LNG/ammonia propulsion.