An investigation is underway after part of the decking on a North Sea oil rig collapsed onto a walkway.
The incident took place on the Shell-operated Shearwater platform located 140 miles off the coast of Aberdeen on July 12.
A liquid nitrogen leak damaged the underside of the deck, causing debris to fall onto the walkway below.
According to the Health and Safety Executive (HSE), the material had the potential to cause “fatal injury.”
Shell was served an improvement notice on August 4 after the HSE "identified underlying causes” in relation to the adequacy of “existing arrangements” when it comes to “loss of containment events”.
Inspectors found that the energy giant were responsible for six health and safety breaches, including a failure to protect workers form potential risks.
Shell said its crew acted quickly to contain the leak and that steps are being taken to strengthen safety measures.
A spokesperson said: “Shell’s goal of zero harm to people is a priority that drives every decision we make.
“A small amount of liquid nitrogen was released, damaging the deck underneath. None of our teams were harmed and we acted quickly to stop the leak and block off the affected area.
“We informed the Health and Safety Executive of the incident immediately and are working with them to implement improvements.”