"Storengy – Stublach Gas Storage Facility – Cheshire - Project Profile" contains information on the scope of the project including project overview and location. The profile also details project ownership and funding, gives a full project description, as well as information on contracts, tendering and key project contacts.
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The Storengy UK Ltd (Storengy), a subsidiary of GDF SUEZ, is undertaking the construction of Stublach Gas Storage Facility in Cheshire, the UK.
The project involves the construction of a gas storage facility with a total storage capacity of 400 million m3 (cubic meters) of natural gas creating 28 caverns on 421ha of land. The facility is designed to have a high injection and withdrawal rates of up to 33 million m3 per day, while the entire development is set to occur in phases.
The maximum height of each cavern is about 100m and 100m in diameter. The caverns are being created by injecting water into wells drilled for mining that includes a wellhead located 300m apart for each cavern.
The project includes the construction of degassing tanks, a pump house, a solution mining facility, water/brine pumps, a nitrogen storage facility and distribution system, a gas processing plant, a control system and power supply. The solution mining facility is connected to the wellheads through underground steel pipes and cables.
The gas processing plant included four gas compressors run by electric drives that enable transportation of gas to and from the caverns to the UK's National Grid Transmission System. A drying plant, which separates water from the gas before it is supplied to the NTS, is also part of the gas processing plant.
The development also includes a compressor stations, control buildings, a substation, and infrastructural activities like access roads and facilities.
In 2005, RPS consultants has undertaken feasibility study through public consultation for preparing detailed EIA (Environmental Impact Assessment) and submitted planning application to the authorities.
In August 2007, the Storengy has acquired the Stublach Gas Storage project from INEOS Enterprises Limited.
In October 2008, the actual construction activities have been started with five cavern wells, since then initial works focusing pm flooding, drainage works have been completed.
Storengy has appointed Long O Donnell Associates to undertake tender, contract documentation, commercial management and contract negotiation services for the project.
Storengy has awarded engineering procurement and construction management (EPCM) contract to Costain Oil, Gas and Process, a division of Costain Group PLC and also to the Jacobs Engineering Group. The contract with Jacobs includes design and installation of the gas compression and treatment facilities, a control system and the contract with Costain include EPCM services for the brine and water facilities of the project.
The front-end engineering design (FEED) for the facilities was also carried out by Costain Group. Sanderson Watts Associates was subcontracted by Costain for designing degassing tanks for the project, which also subcontracted Dew Construction for construction of wellhead structures, access roads, concrete piles and foundations works.
A unit of Costain also contracted Grovemoor Construction to construct seven wellheads, a pump house and a degassing tank.
Storengy has appointed Portastor to 16 environmentally controlled packaged equipment buildings for the project. The buildings house electrical switchgear, control equipment and other utilities required to operate the facility. Hewlett was awarded contract to build the foundations and bases for various process equipment and electrical control cabinets of the facility.
The developers also awarded J Murphy & Sons for the construction of 15km of underground steel mains.
In May 2010, the construction on second phase with two gas compressors, two dehydration towers, a gas metering system and all other gas pipeline needed for the facility was started.
In January 2011, GE Oil & Gas was contracted to supply two compressor units featuring its integrated compressor line (ICL) technology. Storengy awarded Stadco Cooling a contract for supplying two water cooling systems.
In May 2011, ABB was appointed main automation and instrumentation contract for the facility. The Sheet Piling UK has undertaken the design and construction of a temporary steel sheet pile trench for construction of the gas treatment plant of the facility.
The various supply contracts were awarded to Dutton Contractors for cathodic protection system, Polytech for drainage solutions, BAM Nuttal for industrial solutions, and a contract for carrying out infrastructure work was awarded to Entrepose Industrial Services across the development.
In April 2011, Storengy has awarded a contract to QEM Solutions for providing consulting services for the project that include general QA/QC & Engineering support, managing sub-contractors and other documentation works.
In March 2012, the National Tube Stockholders have been awarded the contract for supplying over 2500 tonnes of bespoke Linepipe into the Stublach Gas Storage Project.
July 3, 2012, Interserve, the international support services and construction group, has won a contract worth over US$8 million to provide pipework fabrication and mechanical services for a new gas storage facility.
In September 2013, construction works on the gas plant completed. The construction works on first phase completed by November 2014.
Hankinson Group has been appointed as the painting contractor for the project.
In February 2017, IACS NDT has been appointed to perform Manual Phased Array testing and other NDT inspections during the construction of phase two by J Murphy & Sons
Construction works are underway and expected to be completed by 2018.
The project involves the construction of a gas storage facility with a total storage capacity of 400 million m3 (cubic meters) of natural gas creating 28 caverns on 421ha of land in Cheshire, the UK.
The US$788 million project includes the following:
1. Development of 28 caverns
2. Construction of degassing tanks
3. Construction of pump house
4. Construction of water/brine pumps
5. Construction of nitrogen storage facility and distribution system
6. Construction of gas processing plant
7. Construction of control system and power supply unit