Switching a dual fuel installation from gas to oil is a common practice in the natural gas industry regulated on a contractual basis. In the event of disruption to supply, switchovers can be ordered for the duration of the crisis, in addition to those contractually agreed between gas suppliers and consumers. The aim is to ensure that supply can be maintained to customers with non-convertible systems. By switching to oil, dual fuel installations can continue to operate without restriction. This measure will reduce the overall consumption of natural gas within a short period of time.