The expansion of the refinery in Plock, Poland
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PKN Orlen is a Polish company operating in the oil and fuels resale sector, capable of serving over 100 million European citizens. As part of the expansion of the Plock refinery, the largest complex of this type in Poland, and in particular for the construction of a new production unit called New Olefin Complex, NET Engineering supplied a TechnipFMC provides geotechnical support for the FEED (Front End Engineering Design) phase.
The work carried out was the following:
- Interpretation of the available geotechnical survey and hydrogeological monitoring data to define the reference framework for the design of the foundations.
- Analysis of the hydrogeological and environmental data, with special reference to a possible pollution of the surface groundwater, for the definition of groundwater management problems during site preparation and subsequent excavation for the creation of the foundations.
- Analysis of the data of an area where considerable amounts of hydrocarbons have been found in the soil caused by leaks from a plant discharge treatment tank created some decades ago and which, over time, has polluted several hundred square metres to a depth of about 5/6 metres from ground level.
- The sizing of the surface and deep foundations.
In addition, the earth movement project was also developed for site preparation with the aim of minimising movement and avoiding treatment of groundwater as far as possible. If there were high concentrations of hydrocarbons, there would be the risk of problems in both safeguarding the workforce, especially during excavations, and logistical problems of disposal and treatment of the pumped water with a related increase in costs and times for the creation of the work.
Similarly, the groundwater drainage system was sized so that any effect on plant operations during heavy rainfall could be avoided/limited.
