The paper includes aspects specific to the design and the direction of the global heat treatments (GHT) applied to the largest static devices. There are studied the combustion processes specific to the GHT in the variant of heating with flame inside the largest structure. The elaborated calculus algorithm is finalized under the form of combustion diagram and is the base of the recommendations concerning the correct combustion leading, specific to the periods of heating and maintenance of the device to the temperature of heat treatment.
