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CHALLENGEA vital part of the major extension project of the underground gas storage facility Norg, was the addition of a third injection compressor station. As this 3rd compressor had to be installed in between two existing and fully operational trains, the “brown� eld” situation required extensive attention. Also, the construction activities had to be aligned with the seasonal cycle of the UGS operations. Furthermore, the available physical space was limited.
SOLUTIONThis EPC project was executed by the GLT-Plus consortium. Stork is one of the partners, responsible for all construction activities. From project start on, attention was focused at construction-driven engineering. Working in close cooperation as true consortium
partners was key. Due to the operational constraints, construction engineering and scheduling were critical.
Stork provided valuable input during the design phase and succeeded in aligning all construction activities at site.
The injection train consists of:• An indoor two stage compressor
(38 MW), discharge pressure approximately 320 bar
• Eight air-cooled cooler banks• A three phase transformer reducing
the 110 kV high voltage to 7.7 kV for the e-drive
• A high speed high performance gear box
• Lubrication oil skid: two sets of three cooler banks in total. The existing four utility coolers were rejuvenated.
• Foundations
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UGS NORG INJECTION COMPRESSOR STATION
GLT-PLUS is a consortium, comprising of Stork, Siemens, Yokogawa and Jacobs. As execution partner, Stork is responsible for the
integral realization of projects and maintenance. Jacobs contributes design capabilities.
Control & Automation is provided by Yokogawa. Siemens supplies high voltage equipment, electrical drives and controls.
Stork is responsible for all site construction management.
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Notable was the modi� cation of the building. Two separate halls had to be connected and combined into one large building. The new internal separation walls had to provide enough protection to the adjacent hall(s). Measures had to be taken to comply with challenging ‘jet � re resistance’ and compartmentation regulations.
The entire hall is conditioned via a forced room ventilation and safeguarded by Fire&Gas detection systems.
RESULTS• Safety: zero incidents, resulting in a
TRCF of ‘0’.• Successful and close cooperation with
the client the consortium and multiple contracting partners.
• Schedule: all works were completed according to plan. The project has been completed on-time and in-full term (OTIF).
• ‘Flawless’ start-up of the compressor and a high operability availability of 99% already during � rst injection season.
• Quick and � exible execution of the project by an experienced team of highly quali� ed professionals.
SPECIFICATIONS
ClientNederlandse Aardolie Maatschappij
LocationUnderground Gas Storage Norg
Project ScopeRealisation ‘Third injection Compres-sor’. Complete EPC, where Stork was responsible as main contractor for all construction and commissioning activities
Weights (approx.)Transformer : 95 tonE-drive : 80 tonCompressor : 70 tonLube-oil skid : 40 tonCoolerbanks : 55-60 ton/set
HeightCompressor Building: 15 meter
Diameters PipingRanging up to max. 42” Wall thickness up to 35 mm
Execution periodOctober 2012 – April 2015 (5 phases)
Contact detailsStork Van Deventerlaan 1213528 AG Utrechtwww.stork.com
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