HRT has confirmed that Dani Clos will drive in Friday practice for the fifth time this season at Spa next weekend.

The test and reserve driver will replace Narain Karthikeyan for the first session of the weekend in Belgian as he continues to gain more mileage in an F1 machine, with the Spaniard running alongside countyman Pedro de la Rosa for the opening 90 minutes of action.

"Once again I have a chance to step into the car and work for the team and that fills me with satisfaction," he said. "After having run in the events leading up to the summer break, for me it is really important to stay active and be able to continue growing alongside my team-mates Pedro and Narain.

"Spa is a circuit where I have great memories. I won my first international one-seater race there, that's something you never forget and it makes me have special feelings for this circuit. I've been able to rest these days, at least by not travelling, but I haven't stopped training and I've stepped up the rhythm since last week to make it to Belgium in prime conditions to be able to give it my all."

Having made solid progress through the first half of 2012, HRT will aim to take further steps forwards from Spa onwards, with team boss Luis Perez-Sala hopeful of more improvements.

"After the summer we head into the Belgian Grand Prix with a lot of hunger and desire," he said. "We're starting the second part of the championship and we will try to continue in the same manner as the first part and improve.

"Spa is a circuit that the drivers really like because it is the longest in the championship and is made up of a combination of fast and slow corners, besides being located in a beautiful area. It is a medium downforce circuit and the temperatures aren't extreme so we shouldn't have any reliability issues. The weather is always unpredictable in Spa so we have to be ready to take on any situation."