What should always be at hand when using a Full Body Harness in case of a fall?

When using a Full Body Harness, it is essential to have a suspension relief device readily available in case of a fall. This device is designed to assist a person who has fallen and is suspended in their harness to relieve pressure on their legs and improve circulation. Without this device, a person may be at risk of suffering from suspension trauma, which can result in unconsciousness or serious health issues due to reduced blood flow.

A suspension relief device typically enables the fallen individual to reposition themselves to relieve pressure while waiting for rescue. This is critical in emergency situations, as time spent in a suspended position can be life-threatening.

The other options, while they may serve important safety roles in different contexts, do not specifically address the immediate needs of someone who has fallen while using a Full Body Harness. A safety helmet protects against head injuries but does not alleviate the effects of suspension. An emergency whistle can signal for help but does not provide any physical assistance for suspension. A first aid kit is vital for treating injuries but is not effective for managing suspension trauma during the critical moment following a fall.