A Karratha man's arm was crushed as he worked at the dock supplying Chevron's massive Gorgon LNG project in Western Australia on Saturday, the Maritime Union of Australia (MUA) says.
The man was airlifted to a Perth hospital after his arm became trapped between the dock and a barge at the Mermaid Marine Supply base in Dampier, which is used exclusively by Chevron.
MUA WA secretary Chris Cain described Chevron and its contractor as "cowboys", saying poor safety standards had been a problem at the Mermaid Marine Supply base for months.
"It's becoming clearer and clearer that Chevron and their contractors like Mermaid are cutting corners to make up time and money on the Gorgon project," Mr Cain said.
The union said WorkSafe WA had been warned that poor training and management made an accident "inevitable".
Safety representatives had arranged for WorkSafe WA inspectors to visit the site on Friday.
"We've got serious issues when the day after WorkSafe says there's no problem, ambulances are called to an accident of the type exactly predicted by health and safety representatives," Mr Cain said.
The union said the accident raised serious questions that need to be answered, such as why WorkSafe was called to investigate the accident hours after it happened.
WorkSafe and Mermaid Marine have been contacted for comment.