Breach Access is a side quest in Prey (2017).
- Access the Beams and Waves Lab
This Optional Mission can first be obtained by entering the breached Combustion Lab in the Hardware Labs by exiting the airlock into the Talos I Exterior, and floating in to find a broken breach fail-safe panel for the hallway leading to the Beams & Wave Lab. Repairing this fail-safe will allow you to seal the hallway off and start the Breach Access side mission, letting you access the Beams and Waves lab from back in the Atrium.
Before repairing it, feel free to use this hallway as a place to store non-inventory objects, such as Dr. Calvino's corpse, from the exterior. Once the fail-safe is repaired, this will no longer be possible, and any objects you may have stored in that hallway will appear in the Hardware Labs interior. Note that it is currently thought that only objects from the breached labs (i.e. not the science operator near the Hardware Labs airlock, or other corpses from outside the breached labs) will be saved and added (back) to the Hardware Labs map.
Be careful as you return, as another Phantom has now shown up in the atrium. By getting access to the Beams and Waves Lab, you'll be able to get the Q-Beam much earlier, and start another side mission: The Blackbox Project.