SPM#3 SUBSEA HOSES AND VALVES REPLACEMENT

DETAIL PROJECT
Project
SPM#3 Subsea Hoses and Valves Replacement
Client
Pertamina Hulu Energi ONWJ
Location
Offshore North West Java, Indonesia
Duration
21 days fixed shutdown duration
Year
June - July 2016
Mode of Intervention
Subsea IMR 2015-2017 (Saturation Diving
Water Depth
45m
WORKSCOPE SUMMARY

Arco Ardjuna (AA) is a central offloading area in PHE ONWJ (Oil Storage Barge). Arco Arjuna is connected to SPM#3. Oil distributed to Ardjuna terminal is stored in the Arco Ardjuna and will offloaded to the tanker. SPM#3 has 3 (three) x 16” (350 ft) floating hose connected to the Arco Ardjuna, 2 (two) x 16” (175ft) subsea hoses complete with mid water buoy which tie-back to PLEM-1 at north side and 1 (one) x 16” (175ft) Subsea hose complete with mid-water buoy tie-back to PLEM-2 at south side. SPM #3 also connected to 6 (six) mooring anchors chain with approximately 1024 ft (312m) anchor length at 45m water depth. PHE ONWJ plan to replace these hoses and valves during the 2016 campaign.

The works scope was carried out from the 13th of June till 4th of July 2016, starting with As-Found survey on all the SPM#3 components (Anchor chains, PLEM-1, subsea valve A and B, subsea hose string A and B, PLEM-2, subsea valve C, subsea hose string C) using ROV. After isolation of the SPM#3 and permit to work (PTW) in place, all required components were disconnected and replaced by Air and Saturation divers in stages.