The Monte Carlo method is used to simulate ternary fission process. The geometrical factor governing the relation between energy and track detection efficiency in forward 2π geometry for the mass symmetric ternary fission and symmetric fission of hot compound for the reaction systems of (16O+197Au) and (16O + 209Bi) have been calculated. The relation between the counts of 3- and 2- tracks detected by SSNTD and the probability ratio for spatial ternary to binary fission is presented.