Abstract: Method for operating an apparatus (1) for additively manufacturing three-dimensional objects (2) by means of successive layerwise selective irradiation and consolidation of layers of a build material (3) which can be consolidated by means of an energy beam (5), wherein at least one region in a build plane (6) is irradiated in the additive manufacturing process, wherein an interrupted state of the additive manufacturing process is determined and a defined amount of energy is deposited in at least one previously irradiated region (7, 8) of the build plane (6) in an interrupted state of the additive manufacturing process.

Abstract: Apparatus (1) for additively manufacturing of three-dimensional objects (2) by means of successive layerwise selective irradiation and consolidation of layers of a build material (3) which can be consolidated by means of an energy beam (4), wherein the apparatus (1) comprises an irradiation device (5) that is adapted to generate at least one energy beam (4) for irradiating the build material (3), wherein a safety device (10) is provided comprising at least one detection unit (11) adapted to detect process light (12) that is generated by the irradiation of build material (3), wherein the safety device (10) is adapted to control the irradiation device (5) dependent on the detection result.