References

Northern Black Forest pipeline (2nd construction phase)

References

Northern Black Forest pipeline (2nd construction phase)

Client

ONTRAS Gastransport GmbH

Contact person

Dipl.-Ing. Gerd-Dieter Berentzen

Start of construction

08/2019

Construction time

2 years

Scope of services

Construction of a high-pressure gas pipeline DN 600 made of steel, incl. construction of 3 shut-off and pigging stations from Ettlingen to Leonberg: 29.9 km, DN 600, DP 80

Technical specifications:

Diameter

DN 400: 406.4 x 6.3 mm

DN 150: 168.3 x 4.5 mm

DN 300: 323.9 x 6.3 mm

DN 100: 114.3 x 3.6 mm

Diameter

DN 400: 36,900 m

DN 150: 500 m

DN 300: 1,900 m

DN 100: 2,400 m

Material: L 245 NE

Design pressure: 25 bar

Welding process stem: E-hand (111)

Work carried out in pipeline construction:

Site preparation and clearance

Dewatering work

Pipe trench excavation and backfilling

Microtunneling 87 m, DN 1700, BAB A8

Pipe transportation and export

Wrapping work

Laying cable conduit system

Drainage work

Topsoil removal and application including deep loosening

Shoring work

Pipe jacking using the jack and drill method

Culvert laying Enz, 66 m

Welding and pipe construction work

Pressure testing, calibration pigging and drying

Cathodic corrosion protection work

Road and asphalt road construction

Work carried out in station construction:

Site preparation and clearance

Dewatering work

Excavation and backfilling

Welding and pipe construction work

Laying cable conduit system

Fence construction

Topsoil removal and application

Shoring work

Foundation and concrete work

Wrapping and coating work

Drainage work

Surface work and surface reinforcement

All references