Bahrain Grand Prix in Malaysia declared heat-hazard race

Sepang heat puts drivers under extra strain

This weekend’s Bahrain Grand Prix, being staged at Malaysia’s Sepang International Circuit after its original April date was postponed because of the war in the Middle East, has been officially designated a heat-hazard race.

The status applies when forecasts indicate that temperatures will exceed 31C during a race. Conditions at the circuit, near Kuala Lumpur and close to the equator, are expected to reach between 31C and 33C, with high humidity and a chance of rain throughout the weekend.

Sepang is already regarded as one of Formula 1’s most physically demanding venues. Cockpit temperatures can rise above 40C, while drivers compete in several layers of fireproof clothing beneath their overalls, along with a balaclava and helmet.

Cooling system available—but not compulsory

The heat-hazard designation allows drivers to use an in-car cooling system that circulates a cooled liquid, such as glycol, through pipes in a fireproof top worn beneath their overalls. The system is optional, but any driver who chooses not to use it must carry 5kg of ballast to prevent a competitive advantage.

Some drivers have been reluctant to use the cooling kit because of discomfort and concerns that the coolant may run out before the race ends. If that happens, the liquid can reach car temperature, which is considerably hotter than the surrounding air.

The Bahrain/Malaysia event is the third race to receive the heat-hazard designation this year, following the Austrian and Italian Grands Prix. The classification was introduced last year after the cooling-vest technology was developed.

Bahrain presence retained in relocated event

Although the race is taking place in Malaysia, Bahrain-related activities are planned across the weekend to highlight the Gulf kingdom’s role as host of the postponed event.