Modern industrial facility reactor 3D model is available on CGTrader for $12. Original author: zhangwanquan276. Specs: 19019 polys, 17371 verts.
MAX (Autodesk 3ds Max, filesize: 225 MB), OBJ (OBJ, filesize: 2.7 MB), FBX (Autodesk FBX, filesize: 1.37 MB), PNG (PNG, filesize: 225 MB), TEXTURES (Textures, filesize: 225 MB)