The fire broke out late on Wednesday at Viva Energy's Geelong refinery, south-west of Melbourne, which supplies more than half of Victoria's fuel and about 10 per cent nationwide.
Anthony Albanese, who toured the facility on Friday morning after cutting short a trip to south-east Asia, said the incident was regrettable, but was hopeful of production increasing again.

As of Friday, 60 per cent of the refinery's total petrol production capacity was underway, along with 80 per cent of diesel production and 80 per cent for aviation fuel.
Albanese said the incident would not lead to fuel security measures being bumped up to level three, which would have led to an increase in voluntary measures to limit fuel use.

"The good news is ... that no one was injured in this incident that occurred, and that is a tribute to the professionalism and to the management issues that have been put in place to deal with an incident like this," Albanese told reporters in Geelong.
"We'll give an update tomorrow about fuel supplies that are on hand. Fuel is continuing to come in."
Australia is at stage two of the national fuel security plan, a practical guide aimed at managing supply challenges related to conflict in the Middle East.
Exactly what the next stage, stage three, would look like is not clear, but it would involve more practical measures to limit fuel use.
The refinery, which has been operating at full capacity in recent weeks, will be slowing its output for the time being, Viva Energy said.

Chief executive Scott Wyatt said there was still a way to go before the site returned to previous output levels.
"Any shortfalls of production, we're very confident that we can cover that with our our import program, which is quite substantial," he said.
"It's been, obviously, a challenging event for our team. It's a shocking incident."
Despite the impact on production, he said costs would not be passed on to drivers.
"Whatever costs this incident has caused the refinery will be absorbed in our refinery operations," he said.
"We will not be passing that on to the community."

A significant amount of maintenance had been carried out at the refinery, Wyatt said.
As the prime minister visited the site, a handful of orange-clad workers could be seen arriving at the facility's main office.
The fire primarily affected infrastructure responsible for the production of petrol and aviation gasoline, which is distinct from jet fuel and usually used by small aircraft.

Trump 'not happy'

The PM also responded to the latest swipe from United States President Donald Trump, who has said that he is "not happy" with Australia's level of assistance in the Middle East.
"There's been no new requests at all," Albanese told reporters, referring to US calls for assistance in opening the Strait of Hormuz, currently under blockade by both Iran and the US.
The PM refused to answer further questions on the subject, saying it was a matter for the president.

Trump made the critical remarks while taking questions from reporters as he left the White House on Thursday afternoon.
"Well, I'm not happy with Australia because they were not there when we asked them to be there,” he told a reporter from Sky News.
"They were not there having to do with Hormuz. So I’m not happy, I’m not happy with them.”
It's not the first time that the American leader has been critical of the Australian response to the conflict launched by the US and Israel against Iran at the end of February.
"Australia was not great. I was a little surprised by Australia," Trump said last month.
He separately dismissed Australia, Japan, South Korea, and NATO allies, writing on social media that America "no longer 'need' or 'desire'" their assistance.

No 'specific request'

Defence Minister Richard Marles has said the government is unaware of exactly what the US president is referring to, but that he was not prepared to give a "running commentary" on what Trump says.
"We’ve not received a specific request in relation to the Strait of Hormuz, but we’ll work with all partners, our allies, and that very much includes the US in terms of whatever needs to be done in relation to the Strait of Hormuz," Marles told ABC radio on Friday morning.
"We very much support the strategic objective of denying Iran a deployable nuclear weapon and that capability."
Australia had deployed an E-7A Wedgetail surveillance plane to the Middle East, following a request from Gulf countries for defence from missile attacks.
The country will be represented at a gathering of national leaders at a summit in Paris on Friday, meeting to discuss opening the strait.
Marles said that Australia would contribute to an operation to get the channel open in due course.

Opposition defence spokesperson James Paterson, also speaking on ABC radio, said that the criticism from the United States is "very unfortunate".
He added that it was the "fourth or fifth time" Trump has publicly called Australia out, which was "not a good state of affairs" for the security alliance.
"I understand why many Australians do not approve of President Trump, but the reality is he is the president of our most important ally, and he will be for the next three years," Paterson said.
"So this is an important relationship that needs to be managed, and it is very unfortunate that we have this contradiction between what the Australian government is saying and what the US government is saying."
Treasurer Jim Chalmers, who is in Washington for talks with other finance ministers, reiterated the government's point that no formal request from the US had been received.
"It's not unusual for President Trump to call for more investment from partners in allies when it comes to defence," he told reporters.

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