In order to supply seawater for cooling onshore facilities of South Pars Phases 12, located at south of Iran east of Kangan Port, a
seawater intake systems is being developed by joint venture of Daelim, Sazeh and Kayson (DSK). In this seawater intake system,
seawater will be collected at the basin through two 2m/length1200m high density polyethylene (HDPE) pipes. Warmed
discharge water will be returned to the sea using an approximately 200m length outfall HDPE pipe. Delta Offshore Technology
(Delta) as one of the leading offshore companies in Iran will accomplish the installation engineering, procurement, construction
and installation operations of the offshore part of the SPD12 seawater intake system  
Seawater intake systems filter fishes and other particles in the seawater and collect only clear water from the sea floor, without
installing structures which might affect the sea environment. In the seawater intake system the difference in water level causes
seawater to flow into the intake pipe and collect clear seawater in the Sea water intake Basin at onshore.
In this project ballasting weight of the pipelines will be provided by injecting grout inside the core-tube pipes inside the HDPE
pipes. This method has the benefit of having ballasting weight uniformly distributed along the pipeline. While, conventional
ballasting weights exerts local load to the pipeline which is not favorable. This method also reduces the drag forces and
accordingly decreases the pulling force needed during the towage operation. HDPE pipelines will be fabricated onshore, towed to
the location and installed using the float and sink method. They will be laid in a trench and backfilled to be protected from
exposure to any danger that will cause damage to the pipeline for example ship's anchor drag on the seabed.