The environmental impact of Pakistan Research Reactor-2 (PARR-2) following a hypothetical accident is presented. It is shown that with 100% core meltdown and multiple failures, PARR-2 does not pose any catastrophic consequences. Conservative estimates show that radiation levels in the Low Population Zone (LPZ) adjacent to the PARR-2 building, which in this case is the PINSTECH building, remains below the established limits. (author). 7 fig.