Authorities have come up with a long list of safety issues at Clive Palmer's nickel refinery.

Three separate reports have been commissioned by the Queensland Government since the refinery's financial collapse in early 2016.

One of those reports found structures at the refinery with obvious corrosion, deterioration and chemical leaks.

The two subsequent investigations found a limited number of pipes and structural supports had been repaired, but other issues remained outstanding.

There was also blocked fire clearings, disconnected emergency showers, unmaintained fire extinguishers, and loose cladding.

Mr Palmer says he has been following workplace laws.

“At all times Queensland Nickel Sales Pty Ltd, the current manager of the refinery, has been compliant with the act and has continued to work with the relevant authorities to ensure that the Refinery is safe and compliant,” Mr Palmer said in a statement.

More details are available here.