AFL CHIEF executive Gillon McLachlan says that despite the terrorist attacks in Brussels on Tuesday night, he remains confident in the safety of fans at this week's opening round of the season.

More than 30 people were killed in two separate suicide bombings at the international airport and metro station of the Belgian capital.

McLachlan said the League had already made the security of patrons a high priority before Tuesday's attacks.

"Those tragic events are a reminder of how important it (security) is, but with the work that’s been done and the increased investment we've made, we feel very confident with the measures we have in place," he said.

"We have conducted a security review for the last 12 months that went to our commission in December last year.

"On the back of that we've already strengthened our security measures across the game.

"We announced last week that for the first time ever we will have dedicated security resources at all 198 matches (this season) liaising with police and the relevant security authorities." 

Fans attending Thursday night's season opener between Richmond and Carlton at the MCG are being warned to expect delays, with every patron to face bag checks and an increased level of metal detector wanding before the turnstiles.  

"The safety and security of fans, players and officials at the MCG is our No.1 priority," MCC chief executive Stephen Gough said on Wednesday. 

"Footy fans needed to be aware that it could take a little longer to enter the stadium than was the case in 2015.

"We strongly encourage people to plan their journey to arrive earlier than normal to ensure they don’t miss the first bounce, and avoid bringing a bag unless necessary to further streamline their stadium entry."

The MCC installed a security perimeter around the iconic stadium for cricket season, causing lengthy delays for fans.

Talks between the venue, Victoria Police and AFL, led to the decision to scrap the so-called 'ring of steel' for the start of the AFL season this week.

"The ring of steel was a trial and the removal of that was done on the recommendation of our integrity division at the MCG, working with Victoria police and all the relevant authorities," McLachlan said. 

"That’s the decision that’s considered the best one with security the priority."