concept EIA-rapport - Staatsolie

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SRK Consulting: Project No: 439414 Staatsolie Pipeline EIA – Draft EIA Report Page 18 Underground pipelines will be entirely welded, and all welds will be x-rayed for control. Three layers of coating will be applied to the outside of the pipelines. The walls of pipelines located in shallower sections, near the entry / exit points, will be thicker, as the risk of third party interference and stress on the pipe due to differential settlement will be highest in these sections. In these sections pipelines will also be protected by a plate inserted above the pipelines about 2 m below ground (see Figure 3-5). Pipelines will be coated for extra strength. A cathodic protection system will be used to prevent corrosion of the pipeline. Figure 3-5: Schematic drawing of pipeline at entry / exit points 3.3.3.5 Work force The HDD will be mainly executed by an international contractor, which is expected to bring its own skilled personnel and specialised equipment to Suriname for the duration of the drilling phase. The HDD contractor crew is expected to consist of approximately: • 12 persons in the drill rig crew (6 persons per 12 hour shift); • 30 - 40 persons engaged in welding operations during the assembling of the pipeline; and • 30 - 40 persons engaged in river operations, depending on type of boats used, to lay out the pipelines for insertion into the drill hole (these activities should not exceed 3 days). Some drilling in the shorter sections at Bruynzeel may be undertaken by local companies with smaller, local drill rigs. Ancillary work related to the pipeline construction, such as the preparation of drill pads and trenching of the relevant sections, will be undertaken by local (Surinamese) contractors. It is estimated that approximately 25 staff will be engaged in those activities for some 3 months, viz. 10 persons (periodically) engaged in transport of equipment (5 trucks) and 15 persons engaged in piling and concrete works. 3.3.4 Operation Pumps and pig 5 launchers for the diesel and gasoline pipelines will be installed at the Staatsolie refinery site. The pump and pig launcher for the LPG line will be installed at the OGANE site. The gasoline pipeline will transport Gasoline (95 RON) and the diesel pipeline will transport Automotive Diesel (Euro IV), with the specifications listed in Table 3-2 below. 5 Pigging in the context of pipelines refers to the practice of using pipeline inspection gauges or 'pigs' to perform various maintenance operations on a pipeline. This is done without stopping the flow of the product in the pipeline. REUT/DALC 439414_StaatsoliePipelineEIA_Draft EIA Report_Final June 2012
SRK Consulting: Project No: 439414 Staatsolie Pipeline EIA – Draft EIA Report Page 19 Table 3-2: Specifications of pipeline products Gasoline (95 RON) Automotive Diesel (Euro IV) RON 95 min Density at 15 oC 820 - 845 kg/m 3 MON 85 min Viscosity at 40 °C 2.0 - 4.5 cSt Density at 15 °C 720-775 kg/m 3 Flash point, Abel 55°C min Aromatics 45 Vol% max Cloud point -15°C max Benzene 1 vol% max Sulfur content 10 ppm wt max Olefins 18 %vol max Water content 200 ppm wt max RVP 9 psi @ 100°F Cetane Number 51.0 min Sulfur content 10 ppm wt max ASTM D86 95% 360°C max Lead 0 g/l Polycyclic aromatics 11 wt% max 10 vol% evaporated 70°C max 50 vol% evaporated 77-121°C 90 vol% evaporated 190°C max Copper strip corrosion No. 1 max Silver strip corrosion 1 max Solvent washed gum content 5 mg/100ml max Oxidation stability 240 minutes min During normal conditions, the pipelines will be operated during the 8-hour day shift. Diesel and gasoline will be stored in tanks at the Staatsolie refinery, certified and then pumped in batches to SOL and Suritex. LPG will be received from OGANE. During normal operations, approximately 4 tons/hr of LPG will be pumped for some 5.5 hours twice a week, with a total of approximately 44 tons per week conveyed in the pipeline. During cold start-ups of the Staatsolie refinery, larger volumes of LPG will be transferred over two to three weeks, and pumping may take place 24 hour per day. Part of the pipeline automation system is a custody-metering system at the refinery for all three pipelines. The pipeline automation system will be interfaced with the refinery Distribution Control System for control and monitoring purposes. The pipelines will be cleaned and inspected for condition and stresses by regular ‘smart pigging’. In sections where the pipelines are situated above ground or buried with shallow cover, the pipeline corridor will be marked and maintained, and above-ground land use will have to be carefully coordinated and controlled. 3.4 Project alternatives Best practice requires that an EIA process identifies and describes feasible and reasonable alternatives to the proposed activity. Different types or categories of alternatives can be identified, e.g. relating to the location or route of the project, the type of activity, the design or layout, the technology or operation. The ‘no go’ or ’no development’ alternative must also be considered. Not all categories of alternatives are applicable to all projects. Furthermore, the consideration of alternatives is also inherent in the detailed design of the project and the identification of mitigation measures in the EIA process, and thus not all possible alternatives can be individually presented in an EIA. Specific alternatives with relevance to the project are discussed below. REUT/DALC 439414_StaatsoliePipelineEIA_Draft EIA Report_Final June 2012
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concept EIA-rapport - Staatsolie

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