References

CONVERSION OF NATURAL GAS STORAGE

References

CONVERSION OF NATURAL GAS STORAGE

Client

GHG-Gasspeicher Hannover GmbH

Contact person

Dipl.-Ing. Michael Thünemann

Start of construction

03/2023

Construction time

9 months

Scope of services

Conversion of the plant from L-gas to H-gas, including the installation of piping for two feed-in filters, the installation of a new sales meter for injection and withdrawal and a volume control system for withdrawal as well as the integration of compressors V4 and V5 and the drying plant. The new gas and water cooler of the V4 compressor unit and the two new hot water boilers of the preheating system were re-piped. In addition, the existing instrument air supply was extended and adapted and the LP blower was reconnected.

Work carried out:

Pipeline construction:

Prefabrication and assembly. Pipe dimension DN25- DN300/ DP16- 210 bar/ Design temperature -40°C to 50°C

Tank systems incl. TKW / EKW refueling

Re-coating with PUR coating and PE coating.

Pressure testing and drying

Supply and installation of pipe insulation

Prefabrication with automated welding processes in Neuenhaus

Delivery and installation of precision piping in Swagelok

Integration of the sub-areas

Supply and installation of a wastewater pressure pipe system, incl. Lifting system

Structural/civil engineering:

Creation of excavation pits and pipe trenches with suction excavator in existing pipe piping

Shoring by means of soldier pile wall shoring

Conversion and renovation of two buildings

Open drainage with filter basket/gravel

New construction of foundations in in-situ concrete and prefabricated construction

Renovation of an AWSV area

Dismantling and demolition work on the existing brine system, the existing boiler system, the existing gas and water cooling unit and the existing ND blower

All references