1). primary period of the contract plus extension option
2). unpriced bid
3). In the event the rig is undergoing modification/refurbishment works, certificate from the manufacturer, along with an written undertaking from the bidder/owner to provide such certification by third party inspection agency (before sailing of the rig from the shipyard / rig building yard) is to submitted along with the unpriced bid. No cost shall be reimbursed by ONGC on this account to the bidder.
4). The bidder should also furnish certificates from any one of the above mentioned third party inspection agency and in case of rig under going modification/refurbishment bidder shall furnish certificate from the manufacturer along with unpriced bid bringing out clearly the condition and status of the modular work over rig and major equipment.