Mr Osborn intends to provide a report to the HSE which outlines his concerns – including over the use of safety features like explosion relief panels.
He believes the silo that exploded could have been fitted with additional safety measures.
After studying aerial shots from Google, Mr Osborn said two new silos were installed at the Avonmouth site between 2007 and 2009.
These were a different type and served a different function from the silo that exploded in 2020, which had been installed several years earlier.
But an industry magazine claimed in 2013, external the new silos were fitted with a key safety measure – explosion relief panels.
These are deliberately designed to come loose in the event of a build-up of pressure, preventing the kind of catastrophic explosion that occurred in 2020.
However, he said he has seen no evidence that the silo that exploded was fitted with these panels.
Mr Osborn said that if new silos were fitted with them, existing silos should have also been retrofitted.
“It comes back at the end of the day to sitting down and thinking through the risks involved, identifying the hazards,” he said.
“I think if that had been done properly, the precautions would have been put in place.”