We wish to probe the excitation spectra in Sr3NiPtO6 by time-of-flight neutron scattering on IN5 and IN4. The Ni2+ ions in this oxide are the only magnetic ones and materialize a triangular array of quantum spin-1 chains. In a previous diffuse neutron scattering experiment with tri-axial polarization analysis on D7 we confirmed that the chains are in the "large-D" phase. No magnetic scattering is detected at 50 mK and only diffuse paramagnetic scattering is observed as the temperature is increased to 300 K. Surprisingly, a strong thermal increase of the nuclear scattering is concomitantly observed for temperatures up to 100 K. This signal decreases as the temperature is further increased up to 300 K. We hope to better understand this unexpected increase of the nuclear response from inelastic neutron scattering. We also aim at determining the excitation gap associated with the "large-D" phase and at probing the excitonic modes and their possible softening by the inter-chain interactions.