Woodside pipeline incident 'lucky not to kill workers'

Unions have concerns about the vessel being used to lay pipe for Woodside's Scarborough gas project. (HANDOUT/SAIPEM)

A major incident during the installation of Woodside's Scarborough pipeline off Western Australia has raised serious concerns for Indigenous custodians, environmentalists and the union representing offshore workers.

There were two separate incidents in January on a contractor vessel, Castorone, while it was working on the installation of the Scarborough trunkline, which was damaged, Woodside has confirmed.