Patent ID: 7077622

Claim:
An emergency cooling system for a component which is subject to thermal load in operation, comprising: a component having a wall which, in operation, is acted on by heat on a first wall side and is acted on by a flow of cooling fluid on a second wall side; the wall having at least one plug and at least one emergency cooling opening which is closed off by the at least one plug, cooling fluid flowing through the at least one emergency cooling opening from the second wall side to the first wall side when the at least one plug is absent; the plug being configured and arranged to melt at a predetermined temperature; the at least one plug comprising a body which is produced separately from the component; and the at least one plug being inserted into the emergency cooling opening, in which the at least one plug is connected to the component; wherein each at least one plug has a plug body having the predetermined melting point; and wherein the plug body has a protective layer which: acts as a diffusion barrier between the material of the plug body and the material of the wall, protects the plug body from oxidation, corrosion, erosion, or combinations thereof, or both.