Construction of the 320 KV extra-high voltage direct current connection at the Oberzier - Belgian border as an underground cable

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HDD flush drilling works for the construction of cable conduit systems in construction lots HDD 1, HDD 2 and HDD 3

North Rhine-Westphalia

  • Construction of horizontal drilling sections with 2 individual drilling sections each (840 m and 310 m)
  •  Delivery and welding of PE pipes DA 280 SDR 9 / SDR11, 3,450 m
  • Supply and insertion of PE pipe DA 50*4.6 in cable protection pipe DA 280, 10,350 m
  • Supply and insertion of PE pipe DA 75*6.8 in cable protection pipe DA 280, 1,150 m Lot HDD 2
  • Construction of horizontal drilling sections with 3 individual drilling sections each (610 m, 340 m and 280 m)
  • Supply and welding of PE pipes DA 280 SDR 9 / SDR11, 3,690 m
  • Supply and insertion of PE pipe DA 50*4.6 in cable protection pipe DA 280, 11,070 m
  • Supply and installation of PE pipe DA 75*6.8 in cable protection pipe DA 280, 1,230 m

Lot HDD 3

  •  Construction of two horizontal drilling sections of 1,170 m and 630 m, each a drill channel of 800 mm diameter for the insertion of three cable ducts of DA 280
  • Delivery and welding of PE pipes DA 280 SDR 9, 5,400 m
  • Delivery and insertion of PE pipe DA 50*4.6 in cable protection pipe DA 280, 16,200 m
  • Supply and insertion of PE pipe DA 75*6.8 in cable protection pipe DA 280, 1,800 m

Execution in cooperation with Beermann Bohrtechnik GmbH

April 2019 to June 2020

Amprion GmbH

Project information

Download project information, PDF here.