Nine people were killed and 33 injured in the explosion in 2004
A public inquiry into a fatal factory explosion in Glasgow has heard no checks were carried out on pipework when a new gas tank was fitted.
A corroded pipe was later blamed for the explosion in Maryhill that killed nine people in May 2004.
The inquiry heard a new tank was installed when ICL Plastics changed gas supplier six years before the blast.
The new supplier, Johnston Oils, said the maintenance of pipework was the customer's responsibility.
Director of Johnston Oils, Alan Elliot, said: " At no time did ICL ever ask us to come to look at the pipework at ICL Plastics."
He said if an inspection had been requested, a risk assessment would have found that the existing pipework led into a factory basement.
The hearing has previously heard that pipes carrying liquidised petroleum should not feed into a basement because of a lack of ventilation.
"No-one ever raised with me that the pipework was in the basement," Mr Elliot said.
Mr Elliot said had the time it was not the company's policy to assess a site before installing a tank. The company has since changed that policy.