Green Supply Chain Management (GSCM) has become one of most promising tool in reducing environmental hazards of manufacturing industries. Selection of indicators and its implementation needs good decision making. The Aim of Relative Reliability Risk Index (R3 I) is to assess relatively the reliability of an industry wherein GSCM can be implemented and to screen out the ones that are judged to have unacceptable level of rank and hence risk. The relative measurement of indicators is done by Analytical Hierarchy method and weights are assigned through entropy method. Alternatives Functionality Graph is plotted to get to know the strength of each indicator. Relative Reliability Risk Index (R3 I) is calculated and results obtained from the case study are compared.