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The preliminary design of XRCS Survey spectrometer for ITER has been developed addressing many challenges such as designing a 8.0 m long, vacuum extending sight-tube that interfaces mystal spectrometer. placed in the port-cell, with equatorial portsplug (EPP-11) while allowing 50 nun machine movements, and opthnizing neutron shield design so that systems can fit into the available space arid still the shutdown dose rates (SDDR) remains within the safe limits. The design detailing has been done for the sightstube and its components addressing the ITER specific requirements. Engineering and nentronic analysis are perfonfied for estimating the thermal displaceinent, stresses in the fron Eend components, neutron flux on the sight-tube components, SDDRs in the interspace region etc.