AIRFLD‐465 Repair underground water leak BDM TIER 3 SIGO

24 FEB 2022 WIB decision: PW H84 JOC execution (BDM Overflow) TIER 3 1. CURRENT CONDITION: Underground leak on the 8 pipe branch from 300mm water main running by the exterior fence of the TELECOM compound at AIRFLD 465 has a significant leak estimated in 30,000 GL per day. The leak is located by the gate valve 6 DIS SV 587 refer to attached plan. 2. REQUIREMENT: 2.1 Provide labor, materials and equipment to perform partial demolition of the existing concrete surfaces and asphalt road. Dig the areas in the indicated locations to completely expose the underground 300 and 200mm (8 ) water pipes. Perform the required repair work by replacing the portion of damaged pipe. Restore the existing surfaces to match existing conditions. The Contractor is required also to restore existing underground utilities such as electrical cables, pipes that could be disconnected or damaged during the performance of the work. 3. DESCRIPTION OF WORK: Provide required actions (labor, equipment, material, transportations, excavations, site restorations, etc.) to repair water leak affecting the polyethylene underground water pipeline. This task includes, but is not limited to, the following actions: Demolition of the concrete slab and road curbs including portion of the existing security fence. Digging work to expose the pipe. The excavation shall be of a size to allow sufficient space in order to allow sufficient safe space for the repair /replacement operations. The depth of the pipe is estimated to be 1.50mt below ground level. Provide the equipment to pump the water out from the excavated areas. Expose the existing pipes, located the leak cut the sections of pipe where the leaks are located. Provide new sections of 300 and 8 HDPE, including installation of joints, fittings, flanges, hardware to connect the new line to the existing HDPE pipe. ... NOTE: description has been truncated, please see Project Note for full description.