BULLETIN No.1 Date: 19/05/2015 Ref No: PRT-2015-0141 Bid No.: CMIT-PRT-10.30-150105 Project Title: Extra Valves for BUT Upgrade Project Subject: Valves Quantity Adjustment Dear Bidders, With reference to the subjected tender announcement dated on May 13, 2015, we would like to make following clarifications concerning the adjustment in valves quantities： 1. Canceling all12" gate valves in unit 731-BUT Upgrade Decreasing quantity：20 sets Tag：GA-1D36S Notes：150lb Material：150lb ASME B16.5/API 6D/ASME B16.34 Forged-A105N+3mm RF 2. Increasing 12" ball valves in unit 731-BUT Upgrade Increasing quantity：48 sets Tag：BA-1D34S Notes：150lb Material：150lb ASME B16.5/API 6D / ASME B16.34 Forged-A105N+3mm RF 3. Increasing 8" ball valves in unit 731-BUT Upgrade Increasing quantity：10 sets Tag：BA-1A14 Notes：150lb Material：150lb ASME B16.34/API 6D/ASME B16.34 Cast-ASTM A216WCB RF The new valve quantity information can be found in the attachment of this bulletin No.1, SECTION 4 SCHEDULE OF COMPENSATION 150105-Revised and MTO of MANUAL VALVES-Revised. Please make your quotation based on the updated quantities. You can download the attachment to this bulletin No.1 through following web link: User name: contractor Password: contractor Thank you for your understanding and cooperation. Regards _________________________ Mr. Ma Peixin Manager of Contracts & Procurement Department CNOOC Iraq Limited