The lockdown Brig contains a number of Cells which use advanced technology to cure criminal Peeps of their evil ways. Which is to say, they receive mind restructuring and therapy. Most will not sin again.
This is a containment facility for criminals. The Lockdown Brig is divided into isolation cubes, with one deviant per cube. Safely restrained here, each perpetrator undergoes a specially-tailored course of therapy and non-invasive brain restructuring to eliminate the criminal tendency. The reoffending rate, whilst low, is not zero. Apparently some criminal minds just can't be cured.