The present invention relates to a bursting insert for installation in a pipeline system for transporting a fluid showing a spontaneous exothermic reaction. The bursting insert comprises a wall which surrounds—at least in part on the outside—a passage volume having the fluid flowing therethrough in a passage direction. A pressure discharge line which is sealed relative to the passage volume with a bursting body extends out of the passage volume. When a predetermined bursting pressure is exceeded, the bursting body can be transferred into a state in which the passage volume and the pressure discharge line are interconnected in fluid-conducting fashion. For an easy mounting of the bursting body, the bursting insert can be designed as a pipeline module which can be installed and dismounted repeatedly in the pipeline system for replacing the bursting body.