The Crossrail worker killed earlier this year was standing in an ‘excluded’ area when the accident happened.
Rene Tkacik died on 7 March after being hit on the head by a piece of concrete which fell from the tunnel’s ceiling. He was pronounced dead at the scene.
The 43-year-old Slovakian had been working on a sprayed concrete lining (SCL) crossover tunnel near Holborn station in central London, where the Bam/Ferrovial/Kier joint venture is main contractor.
Crossrail chairman Terry Morgan told London Live the worker was in an area where he “shouldn’t have been”.
He said: “A particular individual was on a work site doing a very careful job… and this individual went into an area that was excluded. [He] shouldn’t have been there, and we’re still trying to work out why it happened.”
In March, Morgan told NCE that the accident was devastating for all involved on a project where worker safety had been the number one priority.
He added: “SCL is a proven tunnelling process and undertaken with robotic spraying equipment on Crossrail to mitigate any risks as much as we possibly can.
“The incident happened at a working face and we have a large number of these across our many working sites. We stood down associated SCL works pending completion of an assurance review involving all contractor sites. We have confidence that the correct processes are being followed.
“We have spent a lot of time on toolbox talks and ensuring that everyone clearly understands our requirements.”
Tkacik is the first worker to die on the £15bn Crossrail project.
A Health and Safety Executive investigation is ongoing.