Hydrodyamics Lab Loot - Urchin Artifact & Keycode Stash | STALKER 2

How to get into the Scientists' Stash that's locked behind a keycode at the Hydrodynamics Lab as well as an anomaly location that spawned the Urchin artifact which gives you medium radiation resistance. I also walkthrough some other loot spots in the area - Stalker 2: Heart of Chornobyl