The electron correlation effects and Breit interaction as well as Quantum
Electro-Dynamics (QED) effects were expected to have important contribution to
the energy level and transition properties of heavy highly charged ions. The
ground states [Ne]3s23p63d2 and first excited states
[Ne]3s23p53d3 of W54+ ion have been studied by using
Multi-Configuration Dirac-Fock method with the implementation of Grasp2K
package. A restricted active space was employed to investigate the correlation
contribution from different models. The Breit interaction and QED effects were
taken into account in the relativistic configuration interaction calculation
with the converged wavefunction. It is found that the correlation contribution
from 3s and 3p orbital have important contribution to the energy level,
transition wavelength and probability of the ground and the first excited state
of W54+ ion