Environmental expert, RD Tripathi has denied the threat of an oil spill from the sinking of the dredger, Tridevi Prem, which sank near Mangaluru on September 2. Talking to reporters on Friday, Tripathi reasoned that since there was no blast or damage to the ship while it sank, the fuel compartments will remain intact. Chairman, NMPT had a similar reply, who based his argument on the water samples from the site.