Deep Panuke Project Description - Encana

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2.4.2 Utilities2.4.2.1 Electrical Power GenerationElectrical power generation for the Deep Panuke MOPU will be provided by multiple redundant fuelturbine generating sets. For the M&NP Option, the turbines will be tri-fuel (condensate, fuel gas, anddiesel). For the SOEP Subsea Option, the turbines will be dual-fuel (fuel gas and diesel). For the firstproduction start-up, sufficient quantity of diesel will be available for power generation.Emergency power will be provided by a diesel engine driven generator set as per CNSOPB regulations.The design requires the use of diesel fuel for emergency situations (emergency generator, firewaterpumps), for certain start up scenarios (i.e., when buy back gas is not available), and for certainmaintenance scenarios (i.e., power generators when no buy back gas is available).The transfer of diesel from ships to the MOPU storage tanks will occur via loading hose. Bulktransfer/hose-handling procedures will be outlined in the EPP.Battery back-up will be provided for critical emergency services.2.4.2.2 Platform FuelFor the M&NP Option, condensate will be used as fuel. Fuel gas may also be used as supplemental fuel,as required. For the SOEP Subsea Option, fuel gas will be the primary fuel source. Diesel will be usedas fuel for the crane and the emergency generator. Diesel will also be used for start-up and shutdown ofthe compressor and power generation turbines. The MOPU will have a storage capacity ofapproximately 70 m 3 for diesel. The area around the diesel storage will be “bunded” or “dyked” tocollect diesel fuel in the unlikely event of a leak/spill. The bunded area will be routed to the open drainssystem within which the hydrocarbon is recovered. There is no capability to flare diesel on the MOPU.All fuel will be metered.2.4.2.3 Heating Medium SystemThe processing facilities require heat input for a number of systems including amine regeneration, TEGregeneration, condensate stabilization, and produced water processing. The heating system is a “closedcircuit” system in which a heating medium (essentially the same solution as per the cooling mediumexcept it contains some stabilization additives) is pumped through waste heat recovery units (WHRUs).There are three WHRUs, one installed on each turbine exhaust of the compressors. The heatingDeep Panuke Volume 4 (Environmental Assessment Report)• November 2006 2-40
medium, circulating through the WHRUs, extracts heat that would be destined as waste to ambient androutes to various users.2.4.2.4 Cooling Medium SystemCooling water for process and utility systems will be done via an indirect seawater/cooling mediumsystem. Seawater will be pumped through a filter then a heat exchanger. The exchanger will cool amixture of ethylene glycol and water (cooling medium). The cooling medium will then be distributed tothe equipment and the plant requiring cooling. The once through seawater is returned to the ocean viathe discharge caisson.2.4.2.5 Deck DrainageDeck drainage will be collected and treated according to the OWTG (NEB et al. 2002). Drainage fromequipment areas on platforms will be directed through a header system to a collection tank to anoil/water separator treatment unit on the MOPU. Petroleum hydrocarbons and sludge in the oil/waterseparator will be transferred into containers for shipment to shore for disposal. The water from theoil/water separator will be treated using a cartridge-style water polisher and tested prior to discharge toensure compliance with the discharge criteria of 15 mg/L or less.The deck drainage system does have overflows to permit water to be routed directly overboard in theevent of a deluge event or rain water in excess of the design condition.2.4.2.6 Relief and Blowdown SystemSafety systems and devices will be designed to meet Project standards and the requirements of allapplicable standards, codes, and local regulations, including:• API B31.3 – Piping;• API 14C – Cause and Effects;• API 520, 521 – PSV’s/Rupture Discs;• IEC 61508 – Functional Safety System;• ANSI/ISA-84.01-1996 – Safety Instrumented Systems;• NFPA 72E – Automatic Fire Detectors; and• NORSOK-1-002 – Safety and Automation System.The principal elements of the relief and blowdown system include the pressure relief devices, flarepiping system, flare separator, flare structure and the flare burner. The flare design will take place duringdetailed design. Application of all relevant codes will be followed for the system design. The systemDeep Panuke Volume 4 (Environmental Assessment Report)• November 2006 2-41
Page 1 and 2: 2 PROJECT DESCRIPTIONThis section p
Page 3 and 4: Potential Radioactive Components: T
Page 5 and 6: 2.2.2 Subsea Wells and FlowlinesThe
Page 10 and 11: 2.2.3.1 M&NP OptionThe proposed pip
Page 12 and 13: The onshore portion of the pipeline
Page 14 and 15: 2.3 Construction and Installation2.
Page 16 and 17: 2.3.2 Export PipelineA proposed pip
Page 18 and 19: A dedicated subsea umbilical will b
Page 20 and 21: Table 2.2 Construction MethodsCateg
Page 22 and 23: These subsea structures may be fast
Page 24 and 25: For the new production and injectio
Page 26 and 27: Figure 2.8Typical Production Well S
Page 28 and 29: 2.3.8.1 Drilling Fluid ProgramWater
Page 30 and 31: Table 2.4 Hydrostatic Fluid Dischar
Page 32 and 33: Acid GasInjectionFeed GasCompressio
Page 34 and 35: Although the M&NP Option is the onl
Page 36 and 37: Spent TEG has no measurable H 2 S a
Page 38 and 39: Table 2.7 Water CompositionComponen
Page 42 and 43: will be designed considering emerge
Page 44 and 45: zones over the pipeline although th
Page 46 and 47: 2.7 Emissions and DischargesEnCana
Page 48 and 49: Table 2.8 Routine Project Emissions
Page 50 and 51: 2.7.1.1 Air PollutantsThe following
Page 52 and 53: esult in eye irritation, respirator
Page 54 and 55: Typically, a re-entry and completio
Page 56 and 57: 2.7.5.3 Deck DrainageDuring constru
Page 58 and 59: 2.9.2 Pipeline Leak PreventionThe p
Page 60 and 61: 2.9.5 Subsea Protection StructuresT
Page 62 and 63: • consider concept alternatives f
Page 64 and 65: Table 2.10Centre Substructure Type
Page 66 and 67: is much more weather-dependent than
Page 68 and 69: Table 2.11 Processing Location Alte
Page 70 and 71: After carefully considering the con
Page 72 and 73: Flaring acid gas consists of direct
Page 74 and 75: Table 2.13Produced Water Disposal A
Page 76 and 77: Therefore, injection into an annula
Page 78 and 79: Use of a dedicated condensate pipel
Page 80 and 81: is taken offshore on a special lay
Page 82: Table 2.15Acid Gas Injection Locati

Deep Panuke Project Description - Encana

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