The 2003-8 French law of 3 January 2003, modified and completed by law 2004-803 of 9 August 2004, transposes among other things the provisions concerning access to liquefied natural gas (LNG) facilities as provided for by European Directive 2003/55/EC of 26 June 2003 concerning the common rules for the internal natural-gas market, abrogating the Directive 98/30/EC.
In this context, Storengy offers access to its underground natural-gas storage facilities. In conformity with decree 2004-555 of 15 June 2004 provided for by the law of 3 January 2003, Storengy communicated a project for technical requirements applying to the gas-storage facilities. In conformity with law 2003-8 of 3 January 2003 modified by the law 2004-803 of 9 August 2004, decree 2006-1034 of 21 August 2006 (in French) organises access to underground natural-gas storage sites:
In application of the measures in European Directive 2003/55/EC of 26 June 2003 and in article 30 of law 2003-8 of 3 January 2003 modified by Law 2004-803 of 9 August 2004, the transport network operator is entitled to priority use of the storage site, via a special flexibility and security contract that gives the operator access to storage capacity required for its public service missions.
Storengy ensures that all information provided by applicants for access to storage when preparing or carrying out a Storage Access Contract remains confidential with respect to any other gas supplier, especially GDF SUEZ entities or subsidiaries responsible for marketing natural gas.
The confidentiality of commercially confidential information concerning shippers or suppliers is guaranteed. This information is only accessible to the operator’s staff and external service providers on a need-to-know basis, and to other legally authorised parties. This protection is guaranteed by article 9 of French law 2003-8 on the gas and electricity markets and public service utilities, modified by law 2004-803 of 9 August 2004 on electricity and gas public service utilities and electric and gas companies: “Each operator using infrastructure for transporting, distributing or storing natural gas or LNG facilities assures the confidentiality of all information which would infringe the rules of fair competition if communicated. The information in question is decided by Decree in the Conseil d’Etat [no. 2004-183 of 18 February 2004].”
To meet this obligation, Storengy applies internal measures based on informing and empowering its personnel and by adding special protection to its information system. The implementation of these measures is regularly audited. Outside these legal obligations, any information published is anonymous and non-specific.
A policy of long-term risk management also requires that the ground surface area is properly managed. By addressing town planning requirements, it is possible to ensure the safety of local residents and prevent new people from being exposed. The law of 22 July 1987 introduced into the law of 19 July 1976 a clause of public easement with compensation for owners affected by the operator of the facility under the control of judges for the compulsory purchase in the event of a dispute.
Addressing town planning requirements for the neighbouring area of high-risk industrial sites is now part of the directive. It helps improve the safety of people living near high-risk sites throughout the European Union.
This new measure now covers all sites concerned by the directive: with respect to existing sites, additional technical measures that have already been introduced will be taken into account.
Citizens’ rights to information are also confirmed by the law of 22 July 1987.
A new directive (2003/105/EC) modifying directive 96/82/EC (SEVESO II) was published in the EU Official Journal on 31 December 2003. These new measures take into account research on the dangerous properties of certain substances and feedback from various accidents that have occurred inside the European Union in recent years (cyanide pollution of the Danube, in January 2000, in Baïa Mare in Romania, an explosion in a fireworks factory in Enschede, the Netherlands in May 2000 and the explosion in the AZF chemical plant in September 2001, in Toulouse).
© Mediacenter GDF SUEZ / Sébastien Calvet, Gilles Crampes, Franck Dunouau, Philippe Dureuil, Pierre-François Grosjean, Noël Hautemanière, Didier Raux, Michel Urtado.
Natural gas is compressed and stored either in permeable porous rock filled naturally with water (an Aquifer layer), or in caves dug in layers of salt (Salt caverns). These underground reserves are filled up in the Summer to meet high consumption during the Winter months.
This involves storing natural gas in a former reserve that is no longer used. The reserve is converted to inject natural gas into a sealed geological structure, which has already held substances for millions of years.
French anti-terrorist regulations (Vigipirate) do not allow the general public to visit "sensitive" industrial sites. However, we do have teaching tools to explain the gas supply chain to primary school children, covering the production, transport, storage, and distribution of natural gas, as well as films explaining how gas storage works, drilling, etc.
When natural gas is stored under the ground, it cannot catch fire as there is no oxygen. However, in surface facilities, very strict safety rules are applied to eliminate any risk of inflammation (ban on smoking and using spark-producing devices, etc.).
The work will mainly mean more road traffic near the site, to bring materials or remove ballast from the excavation work. Storengy will ensure that any inconvenience due to machinery and trucks is kept to a minimum. Work supervisors will regularly inform local residents about progress and any impact the work might have on local life.
Please visit our Recruitment section where you will find details of our jobs along with openings. Any applications for jobs not listed under openings will also be considered.
Natural gas is not toxic. Operating a storage site requires the use of chemical products that are used carefully to avoid affecting the atmosphere or polluting the ground. Runoff water is collected on the site and treated. Waste is also sorted and eliminated in line with the regulations.
We are also replacing gas-powered engines and turbines with electric motors to reduce the site’s environmental impact (by reducing the emission of combustion gases). All French storage sites are certified to ISO 14001 environmental standards.
Reservoirs dug in porous rock (sandstone) whose spongy formations naturally fill with water.
Coefficient, expressed as a percentage between zero and 100 which, for a given Day on a Storage group, reflects the physical withdrawal constraints for conditional capacity, due to the Customer’s Inventory level on the Day in question, as defined in the Physical Characteristics of the Storage groups.
Set each day by multiplying the Maximum Conditional Injection Capacity by the Conditional Injection Reduction Factor for that Day
Set each day by multiplying the Maximum Conditional withdrawal Capacity by the Conditional Withdrawal Reduction Factor for that Day.
Coefficient, expressed as a percentage between zero and 100 which, for a given Day on a Storage Group, reflects the physical Injection constraints for conditional capacity, due to the Customer’s Inventory Level on the Day in question, as defined in the Physical Characteristics of the Storage Groups.
Any individual or legal entity, Party to the Agreement, other than the Storage Operator.
Set each day by multiplying the Nominal injection capacity by the Injection capacity reduction factor and, where applicable, adding the result of multiplying the Additional Injection Capacity by the corresponding Injection Capacity Reduction Factor for that Day.
set each day by multiplying the Nominal withdrawal capacity by the Injection Capacity Reduction Factor and, where applicable, adding the result of multiplying the Additional Withdrawal Capacity by the corresponding Withdrawal capacity reduction factor for that Day.
Depleted gas or oil reserves can be converted in a fairly simple way into underground storage sites. It involves injecting natural gas into a geological formation that has previously stored hydrocarbon over several million years. The wells are tailored to their new function and a power station is installed to run the facilities.
Coefficient, expressed as a percentage between zero and 100 which, for a given Day on a Storage Group, reflects the physical Injection constraints due to the Customer’s Inventory Level on the Day in question, as defined in the Physical Characteristics of the Storage Groups.
Coefficient expressed as a percentage, defined each Day, representing the ratio between the Inventory of the Day and the Nominal storage capacity, with the addition, where applicable, of the Additional Volume capacity and the sum of the acquired Volume Capacity minus the sum of the Volume Capacity transferred over the period of the Agreement.
Injection capacity subscribed by the Customer on a Storage Group under the Conditional Injection Capacity Option and defined in the Special Conditions.
Withdrawal capacity subscribed by the Customer on a Storage Group under the Conditional Withdrawal Capacity Option and defined in the Special Conditions.
Quantity of Gas defined each Day on a Storage Group by adding together the Maximum inventory level for that Day and the Volume Capacity relating to Nominal Storage Capacity and the Additional Volume Capacity, and then further adding the sum of the Volume Capacity acquired and deducting the sum of the Volume Capacity transferred over the period of the Agreement.
Coefficient, expressed as a percentage between 0 and 100 which, for a given Day, reflects the annual physical current gas constraints of the Inventory, as defined in the Physical Characteristics of Storage Groups.
Quantity of Gas defined each Day on a Storage Group by adding together the Minimum inventory level for that Day and the Volume Capacity relating to Nominal Storage Capacity and the Additional Volume Capacity, and then further adding the sum of the Volume Capacity acquired and deducting the sum of the Volume Capacity transferred over the period of the Agreement.
Coefficient, expressed as a percentage between 0 and 100 which, for a given Day, reflects the annual physical current gas constraints of the Inventory, as defined in the Physical Characteristics of Storage Groups.
Defined as the ratio between the Volume Capacity and the Nominal Number of Days of Injection of the Storage Group in question.
Constant integer used to describe the Injection performances of a Storage Group.
Constant integer used to describe the Withdrawal performances of a Storage Group.
Defined as the combination of a Volume Capacity with a Nominal Withdrawal Capacity and a Nominal Injection Capacity; this represents the Basic Storage Service on a Storage Group.
Defined as the ratio between the Volume Capacity and the Nominal Number of Days of withdrawal of the Storage Group in question.
Point at which the Customer and the Storage Operator makes gas available to each other for injection or withdrawal in a given Storage Group in application of the Agreement, as defined in the Special Conditions. A Transmission-Storage Interface Point consists of one or more Transmission-Storage Interconnection Points on a single transmission system. A Transmission-Storage Interface Point is connected to one or more Storage Groups.
Cavern formed by dissolving salt with fresh water.
An agreement executed by and between Storengy and a Customer providing for the storage of natural gas in underground Storage Facilities in one or more Storage Group.
A set of infrastructures, installations and systems, operated by or under the responsibility of the Storage Operator, consisting, in particular, of underground structures, such as salt cavities or porous rocks aquifers, of wells, of pipes, of compression, treatment, measurement and pressure reduction devices, of transmission systems, of computer systems etc., which is connected to the Transmission System by a Transmission-Storage Interconnection Point.
Group consisting of part or all of one or more Storage Facilities, on which the Storage Operator carries out the service to which the Agreement relates.
Period beginning at 06:00 on April 1 in one year and ending at 06:00 on November 1 in the same year.
Disposal or acquisition of Nominal Storage Capacity, of Injection (or Withdrawal) Capacity, of Volume Capacity, of Stored Gas Quantities or of Injection (or Withdrawal) Rights-of-Use.
An agreement executed by and between GRTgaz and a Shipper providing for the transportation of natural gas via the Transmission System.
Storage volume associated with Nominal Storage Capacity, defined in the Special Conditions.
Period beginning on at 06:00 on November 1 in one year and ending at 06:00 on April 1 of the following year.
A coefficient, expressed as a percentage of 0 to 100, which reflects for a given day in a storage group, the physical constraints on withdrawal for conditional capacity, due to the customer’s inventory level for the day in question, as defined in the physical characteristics of storage groups.
Tools 2010/2011
Reference documents
Storage Access Agreement 2010/2011