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LNG Shipping

LNG Shipping

LNG Shipping S.p.A. operates in the sector of sea transport of Liquefied natural gas (Lng).

To do this it uses four of its own methane carriers: LNG Portovenere and LNG Lerici, with a capacity of 65,000 cubic metres each and LNG Palmaria and LNG Elba, with a capacity of 40,000 metres each.

LNG Shipping S.p.A. has been established on July 26, 2001 and is fully controlled (100 %) by Eni S.p.A.

The purpose of LNG Shipping S.p.A. is the exercising, in Italy and overseas, of the shipping activities with ship of every size and tonnage, whether owned or chartered. Acting on behalf of Eni, LNG Shipping carries out the management of Lng marine transportation, which is controlled by Eni Gas & Power Division.

LNG Shipping gives advice support to Eni for Lng shipping and business activities.

 

  • ActivitiesActivities
  • The FleetThe Fleet
  • The Journey of the GasThe Journey of the Gas
  • photogalleryphotogallery
  • Responsibility Responsibility
  • HSEHSE
  • contactscontacts

 

The Fleet Management
According to four ship management agreements (one for each lng carrier), Carbofin Energia Trasporti S.p.A. (the Manager) carries out the manning and the technical fleet management services as agents for and on behalf of the Owner LNG Shipping S.p.A.

Lng Shipping - HSE
(Health, Safety, Enviroment, Security)
The HSES policy (Health, Safety, Enviroment, Security), issued by LNG Shipping S.p.A., has been acknowledged and duly performed by the Manager.

Carbofin Energia Trasporti S.p.A., authorized by the Administration, applies on board of Lng Shipping S.p.A. ships:

  • for HSE area, the own Safety Management System (SMS), according to ISM Code issued by IMO (International Maritime Organization).
  • for Security area, the own ISPS management system, according to ISPS code, issued by IMO (International Maritime Organization).

Liquefied Natural Gas (Lng) shipping activities
The natural gas, extracted to the gaseous state, after the elimination of impurities, is transported through pipelines to the liquefaction plants where it comes transformed in liquid state.

The product is loaded on the Lng carriers and transferred to the regasification plants. Then the Lng comes brought back to the gaseous state and is ready for being let in the distribution network.

The fleet is chartered respectively to Eni S.p.A. - Gas & Power Division - ships LNG Elba, LNG Palmaria, LNG Portovenere - and to GdFsuez - the ship LNG Lerici.

The charter is formalized through the signing of multi-year agreements between the parties, one for each ship. The Lng Carriers usually operate in the Mediterrean Area. The Lng is usually loaded onto the ships in Algeria, and is unloaded in Italy, Spain, France.
On 2008, the fleet has done 103 voyages and has transported about 5,5 millions cm of Lng.

 

 

 

The fleet is composed by four Lng carriers :

  • LNG Lerici - LNG Portovenere (65.000 m3 cargo capacity each)
  • LNG Elba - LNG Palmaria (40.000 m3 cargo capacity each)

These Lng Carriers are powered by a propulsion system with steam turbines. They have special tanks designed to transport natural gas in its liquid state, i.e. at a temperature of around -161°C and at atmospheric pressure.

The total volume of these tanks determines the ship's cargo capacity, expressed in cubic meters.

 

LNG Lerici (Membrane System)

DATASHEET
Pdf Download pdf (13 kb)

LNG Portovenere (Membrane System)

DATASHEET
Pdf Download pdf (13 kb)

LNG Palmaria (Modified Conch)

DATASHEET
Pdf Download pdf (24 kb)

LNG Elba (Modified Conch)

DATASHEET
Pdf Download pdf (24 kb)

Technology and Containement System
When designing a Lng Carrier, the choice of the containment system is extremely important.

Indeed, such a system, which consists of special tanks, allows liquefied natural gas to be contained and transported.

The system is devised to as to limit heat exchange with the exterior, thus controlling the natural evaporation of LNG (boil-off).

This objective is achieved through the combined use of two kinds of material:

  • Insulating materials for insulating the tanks
  • Cryogenic materials, i.e. suitable for contact with liquid at very low temperature

Over the 40-year history of the Lng Industry, the development of new insulating and cryogenic materials has become of prime importance, as have the construction techniques for the containment systems.

Containment System Maker
Membrane type Gaz Transport - Technigaz
Sphere type Kvaener-Moss
"Self supporting prismatic" IHI

The choice between various systems is related both to commercial requirements (performance of the methane carrier) and technical and design criteria.

Whatever the containment system used, it is surrounded by "ballast tanks".

These mean that the Lng carrier becomes a "double hull ship", in other words one which has protection for the cargo tanks in case of emergence (protective location of cargo tanks).


Membrane System
The LNG carriers LNG Lerici and LNG Portovenere were built in Italy by Fincantieri, using the membrane technology of Gaz Transport (GT No. 96).

The four cargo tanks of each ship are created through the internal insulation of the holds.

The ships are thus double-hull and have a double membrane between the inner hull and the outside one are used for the ballast water.

They can serve as a protection barrier for the cargo.

The "membrane" type insulation, with identical primary and secondary barriers, is built using Gaz Transport technology. The material that the membrane is made of is a special steel alloy (with 36 % nickel) called Invar.

This does not expand following variations in temperature.

The "membrane" containment system is compliant with the requirements of the international conventions that current apply, and has two separate membranes in order to contain any leaks from the cargo's containment system.

The temperature (around -161°C) of the gas being transported is kept at atmospheric pressure by controlling evaporation.

This is achieved through an insulation system consisting of marine plywood boxes filled with perlite; these maintain a constant pressure in the tanks, thus removing the excess natural gas vapors - BOG (Boil Off Gas) that form in the tanks, and burning in the boilers.

The BOG thus fuels boilers that the ship use to produce the steam needed for propulsion, for producing electricity and for supplying power to the various utilities, drastically reducing gas emissions in to the atmosphere.

Modified Conch
The LNG carriers LNG Elba and LNG Palmaria were built in the 1960s as the application of a containment system developed by Esso.

Then were later acquired by Snam (a former Eni Company, part of whose business was acquired by the Gas & Power Division) and then conferred to LNG Shipping.

The containment system of the two Lng Carriers LNG Elba and LNG Palmaria is called "Modified Conch".

It consists of 4 "prismatic self-supporting" cargo tanks that are separate from the hull.

The tanks are double-walled.

The portion between the two walls is called "intermembrane" and the external wall is called the "external membrane". The structure provides adequate protection to the ship's hull against low temperatures following a potential loss of LNG from the cargo tanks.

The tanks are thermally insulated on their external surface with a suitable insulatin material covered in sheet-aluminium.

The insulation has the function of reducing BOG.

These ship are also double-hull and again, the spaces between the inner and the outer hull are used for ballast.

The temperatures of the transported gas is maintained not only trough heat insulation, but also buring the BOG produced in the boiler.

With this system, the BOG vapors are used as fuel to poer the ships, and are not released into the atmosphere.


IL VIAGGIO DEL GAS ALGERIA-ITALIA

Il viaggio del Gas Algeria-Italia
Dall'Algeria all'Italia a bordo della nave metaniera LNG Lerici

Intraprendi il viaggio (Only Italian version )


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immaginiThe photo gallery contains images.

 

Legislative LNG Shipping Corporate Responsibility is founded upon:

  • the values expressed by the Eni Code of Ethics;
  • total compliance with the norms in force and main international conventions;
  • the adoption of the highest level of quality as regards management systems and operational procedures;
  • the constant commitment aimed at promoting and developing the professional capabilities of our employees,

but, above all, the behavior and commitment that each member of the LNG Shipping team daily assumes and promotes in the performance of his/her working activities.

Model 231

Italian Legislative Decree 231 of 8 June 2001 introduced rules and regulations concerning the administrative liability of companies.

These rules and regulations state that companies can be held responsible, and consequently subject to sanctions, for any offences committed or attempted in the interests or to the advantage of the company itself by the company’s directors or employees. Companies can, therefore, adopt organisational, management and control models (“Model‘) designed to prevent these offences.

"Model 231" of LNG Shipping S.p.A. includes the Eni Code of Ethics and is made up of an organic set of principles, rules and disposition to realize and manage a control and monitoring system on sensitive activities to prevent the commission of crimes foreseen by LD 231/2001.

Model 231 of LNG Shipping S.p.A. has been firstly adopted on June, 27th, 2005 and subsequently updated in order to extend it to the new type of crimes, added within the time, pursuant to administrative liability of companies; until the new version adopted by Board of Directors Resolution on September, 22th, 2009.

Code of Ethics
A company document with an Eni internal standard value, which defines the set of recognised and interiorised standards of the company and the resulting framework of principles and regulations which all who work to achieve the corporate objectives must adhere to.

The code of ethics which likewise indicates to the company the set of its "social responsibilities" with regards to the main categories of "stakeholders", inside and outside the company itself.

The Board of Directors of LNG Shipping S.p.A. appointed as Guarantor of Code of Ethics the "Organismo di Vigilanza di LNG Shipping".

 

office e-mail:  OdV_LNG_Shipping@eni.it

Downloadable documents

Downloadable documents

 

LNG Shipping S.p.A.
Head Office in
Piazza Vanoni 1
20097 San Donato Milanese (Milan-Italy)
Phone: +39-02-52041375
Fax: +39-02-52041380
e-mail:
Operations@lng.eni.it





Last updated on 22/06/11