Client(s): Oiltanking, Tankstore, Horizon Oil, Universal Terminal, Stolthaven Singapore, etc.

Main Contractor(s): Rotary Engineering, Chiyoda Singapore, Or Kim Peow Contractors, Audex, PEC, etc.

Project Details:

Local environmental guidelines require that tank farm facilities which store large quantities of petroleum and/or chemical products must have a plan in place to contain a spill.

Secondary containment products ensure that when an oil / chemical spill or leakage occurs, the spill will be contained and controlled in a secondary area.

In the context of Singapore, containment bund floor areas of petroleum and chemical storage tank farms are lined with geosynthetic clay liner (“GCL”) to prevent seepage of oil or harmful chemical products into the ground, navigable waters and/or adjoining shorelines in the event of an accidental pipeline rupture or tankage spill.

Green Cosmos have supplied and installed GCLs for secondary containment applications in numerous tank farm storage facilities located on the mainland as well as offshore islands, namely:

  • Air BP Changi (CAFHI)
  • Universal Terminal @ Jurong Island
  • Keppel Merlimau Cogen Power Plant @ Jurong Island
  • Horizon Oil Terminal Phase 1 and Phase 2
  • Oiltanking Singapore
  • Stolthaven Singapore Development Projects @ Jurong Island
  • Tankstore Phase 6 @ Pulau Busing

Outlined below is a set of pictorials on GCL installation procedures for a typical petrochemical storage tank farm: 

1. Sugrade preparation ~ Finished surfaces should be firmed and without abrupt changes in grade. 2. All RC structures, drains & placement of pipe supports completed in advance of laying GCL. 3. Handling of GCL on site utilizing a spreader bar mounted on an excavator. 4. Unrolling of GCL on installation site.
12. Backfilling of sand (at least 150mm) should take place within the same day of GCL placement. 5. Placement of GCL along perimeter wall.
11. Termination edges of GCL will be wrapped with polythene sheet for protection against hydration.

"Bird's-eye" view on installation works in progress

6. Placement of GCL around pipe supports.
10. Placement of bentonite powder along supports & drains. 9. Placement of bentonite powder along walls & beneath upturned GCL. 8.  Termination of GCL around drain pipe. 7. Termination of GCL against RC walls & supports with 150mm upturn.

Please publish modules in offcanvas position.