Nuclear Power Corp of India (NPCIL) had budgeted Rs 30.13 crore, including taxes, for insuring Tarapur units 3 and 4 under a one-year property damage programme, said sources. The reverse auction for covering the risk, however, saw bids fall dramatically, with Oriental Insurance quoting Rs 10 crore, United India Insurance Rs 10.98 crore, and New India Assurance Rs 28.9 crore, they added.