Country Fire Service deputy chief officer Andrew Lawson says there have been literally hundreds of changes to procedures.

They had been made following recommendations from the Victorian Black Saturday Bushfire Royal Commission and suggestions from the South Australian Bushfire Task Force - a group formed in March this year to analyse key issues that arose from the Victorian fires and Royal Commission to improve bushfire management practices.

There are two new rating categories - catastrophic and extreme - while the alert system will ensure that fire warnings are distributed via websites, radio, phone and text messages.

"There were about 51 recommendations from the Royal Commission and another 63 recommendations from the task force," Mr Lawson said.

"We're in the process of implementing those now, either directly or as part of a new national approach to bushfires across the country."

Mr Lawson said 220,000 DVDs had been mailed out last week to explain the changes.

He said the new Alert SA emergency warning system would be incorporated into the past CFS procedures, with emergency warnings also sent out via SMS and voice recorded message to fixed line telephones.

Mr Lawson said the fire danger index was 329 on the day of the Wangary fires on the Eyre Peninsula while the Black Saturday fires had an FDI of more than 220.

"We're having more and more days of FDI above 100," he said.

"This new system helps by not only informing the public when there is a fire ban but when it is a day of extreme or potentially catastrophic fire danger and what they should do to survive."

Calls would no longer be taken by CFS stations but through an "enhanced" triple zero system.

While this had caused concerns for some residents in rural areas, Mr Lawson said the change would make the system more efficient and effective.