Bechtel said a case of suspected sabotage on the QCLNG site has not delayed the construction of three LNG plants on Curtis Island.
Workplace Health and Safety Queensland is investigating the incident after Bechtel workers found a number of chain block lifting devices that appeared to be missing nuts.
Bechtel Gladstone general manager Kevin Berg said further inspections found the equipment had been ‘intentionally damaged’.
Berg said investigations were still under way.
"We're all anxiously awaiting to hear from Workplace Health and Safety Queensland," he said.
"I anticipate it could take their specialists a week to 10 days to conduct a thorough analysis and make a determination and to get back to us and Queensland police."
However Berg said the suspected sabotage had not affected construction, ABC reported.
"We're still very much in line with meeting milestones with the schedule that we have set for ourselves," he said.
"It does take some time obviously to go through and do those kinds of inspections and to verify the safety of the equipment that's in place and to validate that it is safe.
"That does take some time and effort and a number of people to perform the inspections but it doesn't have a significant impact on the overall work activity."
Berg has previously stated it was ‘extremely distressing’ that someone may have intentionally put workers at risk.
Bechtel is currently constructing three major projects on Curtis Island including Australian Pacific LNG, Gladstone LNG and Queensland Curtis LNG.
QCLNG is the most advanced of the LNG projects on Curtis Island, with first gas expected in 2014.