The FTC is calculated by varying fuel temperature with an increment of 20 K and determining respective reactivity. The results are given in Table 3. It is clear from the results that with an increase in moderator temperature, FTC for four different nuclear data libraries, becomes more and more negative., as Cancan be seen in Fig.5. There is agreement between the results obtained using ENDF/BVII.1 and JENDL4.0 together and ENDFB/VII.0 and IAEA together. Whereas, whereas IAEA library gives leastless among all libraries. The ENDF/B-VII.1 and JANDL.4 libraries are our recommended evaluated nuclear data files, showing good results, for use in nuclear science and technology applications, and incorporates advances made since the release of ENDF/B-VII.0 and IAEA. These advances represent on neutron cross sections, covariances, fission product yields and decay data, in nuclear data evaluation that utilizes developments in nuclear theory, modeling, simulation, etc.