Exemption of State GST on intra state supply of heavy water and nuclear fuels to nuclear power operator under notified authority. Exempts intra state supply of heavy water and nuclear fuels by the Department of Atomic Energy to the Nuclear Power Corporation of India Ltd. from the whole of the State tax leviable under the Goa Goods and Services Tax Act, 2017; supplies fall in Chapter 28 of the Customs Tariff and the exemption is effective from 21 September 2017 by Notification 38/1/2017 Fin(R&C)(26/2017 Rate)/A/2431 dated 26 September 2017.