Another patient has died after having to wait outside an Adelaide hospital in an ambulance because there were no free beds.

Key points: A male patient suffering from abdominal pains has died after being ramped outside of Flinders Medical Centre

A male patient suffering from abdominal pains has died after being ramped outside of Flinders Medical Centre He is the third patient to die after being ramped outside an Adelaide hospital this year

He is the third patient to die after being ramped outside an Adelaide hospital this year The Government said it was focusing on opening more beds to combat the problem

The death at Flinders Medical Centre is the third this year due to ramping outside of an Adelaide hospital.

In a Facebook post, the Ambulance Employees Association said the patient was ramped for two hours on Friday.

"This is the price of Government inaction," the post said.

"How many more unnecessary deaths will it take? Urgent action must be taken."

SA Ambulance Service confirmed the death, but said the patient was ramped for 90 minutes before entering the hospital.

Opposition health spokesman Chris Picton said the male patient had abdominal pains and no pulse while still outside the hospital.

"This is completely disgraceful what's happened, our third ramping death this year," Mr Picton said.

"It shows what a disaster we are seeing in terms of ramping across our system."

Health Minister Stephen Wade said the Government was looking at capacity at the state's hospitals, especially in the southern suburbs.

"We are experiencing ongoing pressure at Flinders," Mr Wade told ABC Radio Adelaide.

"We have seen that as we are coming out of our biggest August and September period. We will continue to look at capacity in the south.

"We have already acted in terms of capacity in the south. There are 50 beds in the Repat [Repatriation General Hospital] that wouldn't otherwise have been there. There are 12 short stay beds that we have added to Noarlunga.

"The south is clearly a pressure point in the system; it hasn't recovered as much as other parts. That's why we are putting additional capacity in the south."

Mr Picton said as of Monday morning there had been 19 patients stuck in emergency departments for more than 24 hours.

Mental health beds an area of concern: Wade

But Mr Wade said those people required specialist mental health beds.

"We have increased mental health capacity in the system," Mr Wade said.

"We are trying to improve mental health patient flow.

Two of the three patients who died after ramping were at the Flinders Medical Centre. ( ABC News: Leah MacLennan )

"That is certainly an area of ongoing concern."

A patient aged in her 90s, who waited more than an hour for treatment while being ramped at Flinders Medical Centre, died in September.

Her death came just weeks after the Government announced it would cut positions from the Royal Adelaide, Queen Elizabeth and Women's and Children's hospitals.

At the time, SA Health said it was seeking voluntary redundancies from various positions, including doctors and nurses.

In October, the Opposition released details of another patient who died sometime between February and June this year after being ramped outside the Royal Adelaide Hospital for 45 minutes.

The patient's condition deteriorated while they were outside of the hospital. They were brought inside but could not be resuscitated.

Power outages being investigated

In an unrelated incident, the Health Minister said a report had been ordered into power outages at three major South Australian hospitals on the same night.

A seven-minute outage on Saturday night at the Royal Adelaide is being blamed on the interconnector linking South Australia to Victoria.

Mr Wade has also confirmed the power went out at the Noarlunga and Lyell McEwin hospitals on Saturday night.

He said there was a delay in a backup generator turning on at the Royal Adelaide.

"I'm concerned that the backup generators at the Royal Adelaide didn't kick in as planned and with three power events in relatively short succession, I'm very keen to get a full independent report."