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JACKY WHPWELLHEAD FACILITIES

FUNCTIONAL DESCRIPTION

JACKY WHP WELLHEAD FACILITIES

Prepared for:

ITHACA ENERGY (UK) LtdHSM Steel Structures B.V.

DOCUMENT NO. 070204-FD-001

Prepared by:Iv-Oil & Gas B.V.

Noordhoek 37

3351 LD PapendrechtThe Netherlands

Rev

Date Description Preparedby

Checkedby

Iv O&GApproved

0 14-11- FOR TENDER MST TDR WBA

1 28-11- UPDATED MST TDR WBA

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2 26-01-2008

Updated for Contract PDG TDR WBA

TABLE OF CONTENTS

1.0 INTRODUCTION.............................................................................................................................. 51.1. PROCESS DESCRIPTION..............................................................................................................6

1.1.1. Oil Production................................................................................................................... 61.1.2. Water injection (Future)...................................................................................................61.1.3. Vent system...................................................................................................................... 61.1.4. Drainage System .............................................................................................................71.1.5. Fire fighting ...................................................................................................................... 7

2.0 BASIC DATA .................................................................................................................................. 82.1. JACKY RESERVOIR DATA ...........................................................................................................8

2.1.1. Reservoir parameters for well 12/21-c-6.........................................................................82.1.2. Fluid properties................................................................................................................ 82.1.3. Wax properties.................................................................................................................. 82.1.4. Contaminants..................................................................................................................102.1.5. Formation Water composition.......................................................................................10

2.2. DESIGN FLOWRATES..................................................................................................................112.3. INJECTION OF CHEMICALS........................................................................................................11

2.3.1 Production Fluid..............................................................................................................113.0 SYSTEM DESCRIPTION ..............................................................................................................133.1. WELL HEADS (3 OFF) BY OTHERS ...........................................................................................133.2. PRODUCTION LINE 4 ................................................................................................................143.3. PRODUCTION MANIFOLD 6.......................................................................................................143.4. RISER CONNECTION 6..............................................................................................................15

3.5. WATER INJECTION SYSTEM......................................................................................................153.6. CHEMICALS STORAGE TANK JK-12-T-102/202/302/402...........................................................163.7. CHEMICAL INJECTION PUMPS JK-12-P-101/201/301/401/501 .................................................163.8. VENT SYSTEM............................................................................................................................. 17

3.8.1 Vent Cyclone JK-14-V-01................................................................................................173.9. DRAIN SYSTEMS......................................................................................................................... 17

3.9.1 Liquid Collecting Vessel JK-16-V-101............................................................................173.9.2 Oil Slot JK-16-V-102........................................................................................................17

3.10. FIRE WATER DRY RING MAIN..................................................................................................183.11. J-TUBE UMBILICAL CABLE RISERS.........................................................................................184.0 STRUCTURAL .............................................................................................................................. 195.0 PLOT PLAN & PIPING ..................................................................................................................206.0 ELECTRICAL SYSTEMS...............................................................................................................21

6.1. INTRODUCTION .......................................................................................................................... 216.2. SCOPE.......................................................................................................................................... 21

6.2.1 COMPANY free issued equipment.................................................................................216.3. GENERAL DESIGN REQUIREMENTS ........................................................................................21

6.3.1 Codes, standards, regulations and references............................................................. 216.3.2 Environmental conditions..............................................................................................216.3.3 Area Classification..........................................................................................................22

6.4. FUNCTIONAL REQUIREMENTS .................................................................................................226.4.1 Operating requirements..................................................................................................226.4.2 Equipment enclosures....................................................................................................22

6.5. ELECTRICAL DESIGN PHILOSOPHY..........................................................................................226.5.1 General............................................................................................................................. 226.5.2 Power distribution & equipment....................................................................................23

6.5.3 Battery Back-up requirements.......................................................................................236.5.4 Cabling & wiring..............................................................................................................236.5.5 Cable glands....................................................................................................................24

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6.5.6 Earthing and bonding.....................................................................................................246.6. LIGHTING DESIGN.......................................................................................................................25

6.6.1 General............................................................................................................................. 256.6.2 Lighting Categories.........................................................................................................256.6.3 Luminaire types...............................................................................................................256.6.4 Levels of Illumination......................................................................................................256.6.5 Required Illumination Level............................................................................................266.6.6 Aircraft Warning Lights...................................................................................................266.6.7 Distribution and Control ................................................................................................26

6.7. SMALL POWER DESIGN..............................................................................................................266.7.1 Welding Socket Outlets .................................................................................................26

6.8. TRACE HEATING.........................................................................................................................276.8.1 Self-Regulating/Self-Limiting Heaters...........................................................................27

7.0 INSTRUMENTATION AND COMMUNICATION SYSTEMS .........................................................288.0 LIFE SAVING EQUIPMENT ..........................................................................................................30

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ATTACHMENTS

ATTACHMENT 1 STRUCTURAL -- Isometric Sketches Structural Steel Topsides & Jacket

ATTACHMENT 2 Main Equipment List

ATTACHMENT 3 P&ID Diagrams

ATTACHMENT 4 Key One Line Diagram 11 kV

ATTACHMENT 5 400V AC Distribution MCC One Line Diagram

ATTACHMENT 6 Lay-out E&I rooms

ATTACHMENT 7 Electrical Load List

ATTACHMENT 8 Layout Drawings

ATTACHMENT 9 Instrumentation Block Diagram

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1.0 INTRODUCTION

ITHACA Energy (UK) Ltd has awarded a contract to HSM and Iv as contractors to undertakeengineering and procurement services for the JACKY WHP Wellhead Facilities. This documentdescripes the facilities and there function as agreed under the contract.

The function of this document is to provide a description of the facilities to be supplied under thecontract between ITHACA Energy (UK) and HSM Steel Structures b.v. Due to the fact trackschedule of the project a detailed HAZOP and HAZID were conducted at an early stage. Thefindings from both exercises are incoperated in this document.

The wellhead facilities are 4 slots: One (1) slot for an oil producer, one (1) slot for a futureproducer, one(1) for a future water injection well, one(1) spare slot, one riser connected to anexport pipeline and one spare riser for a Minimal Facilities Satellite Platform for the Jacky FieldDevelopment in Block 12/21C. This Well Head Platform (WHP) is located approximately 10.5km north west of the Beatrice B platform in 40 m of water.

Suitable jack-up rig interface points shall be provided for these jack-up rig types:- Marathon le Tourneau 116-C- CFEM 2005- Neddrill 4 (Nam Nedlloyd)- Goriilla (Marathon Le Tourneau, 150-88-C)- Friede & Goldman, Monarch class

The Jacky WHP will be connected with the Beatrice Alpha platform by a 6oil pipeline andumbiblical power and signalling cables. The Jacky WHP is designed as a Not Normally Manned

Installation, which will be controlled and serviced from Beatrice Alpha. Beatrice Alpha alsoserves as host platform for the oil from Jacky WHP.

Access to the platform will be from a fast rescues craft/crew boat via a boat landing. Nohelideck is provided.

The Jacky facility is located in 39.380 m (LAT) and a desigh life of 10 years and will consist of amono-tripod column 4500mm in diameter with 3 suction pile foundations . The topsides has adeck leg spacing of 10 x 13 meters and consist of four decks, Celler Deck @ EL.+17,000 TOS,Main Deck @ EL.+20,000, Wellhead Access Deck @ EL+24,000 and Top Deck @ EL +28,000.There is an Electrical & Instrument room located to the west of the platform between main deckand top deck.

The following equipment will be procured by COMPANY and free issued to contractor who isresponsible for its intergration into the design:

- Sub-sea power and control unbilical together with its hang-off and splitter box.- Electric Submersible Pump (ESP), down well cable and junction box together with the ESP

Variable Speed Drive unit.

Provision in the form of space in the swithchgear and plot space in the electrical rooms andprocess area will be provided for the future installation of seawater injection equipment and avarable speed drive for the future electric submersible pumr for the future well.

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1.1. PROCESS DESCRIPTION

The wellhead area shall be provided with space for four wells. Initially the WHP will be providedwith a Christmas trees for one oil producing well. At a later stage the WHP will be provided witha wellhead for a water injection well and a third Christmas tree for a second oil producing well.

1.1.1. Oil Production

The oil wells are provided with Electrical Submerged Pumps. The oil-water mixture is pumpedto the Jacky WHP at a pressure above the bubble point.Each well is connected by a 4 production line to the 6 production manifold. This productionmanifold is provided with injection points for these chemicals:

- Corrosion inhibitor- Wax inhibitor - Scale inhibitor

The production lines and the manifold including injection points will be made from duplex steel.Downstream the injections points carbon steel with a corrosion allowance of 5 mm will beapplied up to the tie in to the sub sea oil export line.A corrosion monitoring device (coupon) is mounted in this CS pipe section.The riser is provided with a barred tee and a vertical pig receiver/launcher. Provisions are madefor fitting a horizontal intelligent pig to monitor the pipeline condition.

The produced liquid is exported to the Beatrice Alpha platform, where this Jacky WHP fluid will

be processed and commingled with the existing Beatrice production and exported.

1.1.2. Water injection (Future)

The reservoir pressure will in the future be maintained by injection of seawater.The design of this sea water injection system is open and to be determined by the operator.Deck space has been allowed for this future system. A caisson for a future installation of aseawater lift pump as well as biocide injection facilities into this caisson will be provided.The pressure at the head of the injection well will be ca. 143 barg.

1.1.3. Vent system

The process system is designed as a closed liquid system with no normal venting toatmosphere. The process system is protected against over pressure by relief valves. In theevent that the relief valves discharge hydrocarbon liquid this occurs via a liquid collecting vesseland a cyclone separator. The flashed off vapours are vented to atmosphere at safe location.The quantity of liquid relieved is limited by the installation of a High Integrity EnvironmentalProtection System (HIEPS). On activation the HIEPS will shut down the oil producing wells.The separated liquid in the collecting vessel is pumped back into the production header.

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1.1.4. Drainage System

The platform is equipped with a hydrocarbon drainage system for maintenance activities. Thissystem drains to the liquid collecting vessel. The collected liquid is pumped back into theproduction manifold and exported.For rain water and wash down a separate system is provided. The drained liquids are collectedin an oil skimmer tank. After separation of any oil the water is discarded over board via the WHPMonotower.

1.1.5. Fire fighting

The well head will be provided with a dry fire water ring. Supply of fire water will be from fromthe fire water pumps of the jack-up drilling facility.

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2.0 BASIC DATA

2.1. JACKY RESERVOIR DATA

2.1.1. Reservoir parameters for well 12/21-c-6

Reservoir fluid type Waxy Black OilMax WHSIP 77 barg 1)

Reservoir pressure at 2107 m 256 bargReservoir temperature at 2107 m 85 0C

1) Under natural flow, unpumped

2.1.2. Fluid properties

Bubble point pressure 58.9 baraGas oil ratio 153 scf/bblAPI gravity 38.9 (SG 0.83)

Table 1: Reservoir Fluid Viscosity(at reservoir temperature 85 0C, from 12/21c-6MDT sample)

1) Reservoir pressure2) Saturation pressure

2.1.3. Wax properties

Analysis Test Method Result Unit

Appearance Temp./CloudPoint DSC 43 0C

Pour Point IP15 27 0C

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PressurePsia

ViscositycP

7014.7 1.935

6014.7 1.796

5014.7 1.662

4014.7 1.5343329.7 1) 1.437

3014.7 1.411

2014.7 1.297

1014.7 1.195

787.7 2) 1.174

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Wax content BP modified Not known % mole/mole

For restart of the 10.5 km 4.5 ID flow line from Jacky to Beatrice Alpha a differential pressure of147 barg is required.

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2.1.4. Contaminants

The CO2 content of the Jacky fluids is ca. 0.44 mol%.For design the H2S in the gas phase is 0 ppm.A spare chemical injection point will be provided on the manifold for future dosing of a H2Sscavenger if reservoir souring would occur.

2.1.5. Formation Water composition

For design the Beatrice water composition is to be taken:

Component Concentration

Sodium 20400

Potassium 228

Calcium 2389

Magnesium 297

Barium 4.9

Strontium 188

Iron 0.7

Chloride 38350

Sulphate 138

Bicarbonate 285

% Seawater 5

Fmtn Water Cl(mg/l)

39411

Check ion balance -2.26%

TDS 62281

pH 7.5

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2.2. DESIGN FLOWRATES

The prognosed production profile is presented in table 2:

Table 2: Production Prognosis

For design these maximum flow rates will be incorporated:

Oil rate 15000 bopdFluid rate 15000 bpdWater injection rate 15000 bpd

2.3. INJECTION OF CHEMICALS

2.3.1 Production Fluid

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YearOilb/d

Liquidsb/d

GasMscf/d

Injectionb/d

Prod.Waterb/d

1 10017 11346 1533 15000 1329

2 3753 10285 574 10629 6532

3 2365 11747 362 12227 9381

4 1505 12000 230 14047 10495

5 1041 12000 159 15000 10959

6 778 12000 119 15000 11222

7 614 12000 94 15000 11386

8 499 12000 76 15000 11501

9 423 12000 65 15000 11577

10 368 12000 56 15000 11632

MM bls 7.8 42.9 55.5 35.1

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Provisions will be installed for injection of these chemicals in the produced liquid at theproduction manifold.Space will be reserved for a future H2S scavenger dosing unit. A H2S scavenger injection pointon the production manifold will be made.

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ChemicalCorrosionInhibitor

Waxinhibitor

Scaleinhibitor

Fluid rate Bpd 15000 5000 15000

Spec.Injectionrate

ppm 50 200 10

Cont. Injectionrate

Lit/d 120 160 24

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3.0 SYSTEM DESCRIPTION

The Jacky WHP is a Minimal Facilities Satellite Platform and will consist of these facilities:

- Two oil wells (1 existing + 1 future) and one future water injection well and one spare slot- Production lines, connecting the oil well heads to manifold- Production manifold with injection points for chemicals- Riser connection to sub sea export line- A vertical pig launcher and facilities to fit a horizontal intelligent pig launcher.- Future incoming 6 riser- Storage and dosing units for chemicals (3 off). Next to injection point for these chemicals a

spare injection point shall be provided on the manifold.- A caisson for future installation of a sea water lift pump- A storage and dosing unit for biocide (hypochlorite) injection into this caisson shall be

provided.- Vent system with cyclone separator and liquid collecting vessel- Dry fire water main ring for well heads- Hydrocarbon drain system- Rain water / wash down drain system

Control facilities to be provided are:

- 12 J-tube unbiblical cable riser (2 Off).- Hydraulic Well control unit for 3 wells- An Electrical Power Unit with Transformer/Variable Speed Driver Unit for 1 oil well ESP.

3.1. WELL HEADS (3 OFF) BY OTHERS

Functional Description

The Jacky well head platform will be erected over existing drilled oil well 12/21c-6. In the nearfuture a second oil well and a water injection well will be drilled.The SSDHSV, the SSV and FWV of these wells will be provided with hydraulic lead lines fromthe well control unit and with open/closed signalling.Signals for monitoring the casing and annulus pressures will be provided.The max. WHSIP = 77 barg. The reservoir temperature is 85 0CThe well ESP discharge pressure is controlled and protected not to exceed the maximumallowed operating pressure of the selected 5000# API X-mas trees = 345 barg.

Design Requirements

By others: The Xmas tree will be provided with a 4-1/16 RF 5000# flange.

Design pressure is 345 barg (= MAWP 5000# API Christmas tree)Design temperature is -20/100 oC.

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3.2. PRODUCTION LINE 4


A 4 insulated production line is connected to the FWV on the Xmas tree of well 12/21c-6.The pressure in the system is set by the pressure drop over the subsea pipeline and the arrivalpressure at Beatrice Alpha. This pressure depends on the applied control of the receivingfacilities at Beatrice Alpha (above bubble point =54 barg ). There will be no choking at the JackyWHP.

Design Requirements

Pipe line material UNS 531803

Design pressure is 345 bargDesign temperature is -20/100 oC.

Electrical tracing: Temperature to be maintained above 350C to prevent solidification.

3.3. PRODUCTION MANIFOLD 6


The production line from the existing well 12/21c-6 and the second oil well to be drilled in thenear future will be connected to a 6 production manifold of duplex steel.

The manifold is provided with a set of PSVs (2 x 100 %) to limit the pressure in this manifold tothe MAWP of the sub sea pipeline = 115 barg.To limit the amount of liquids relieved a High Integrity Environmental Protection System (HIEPS)is installed to limit the duration of the relief.This production line and manifold are provided with electrical tracing.The manifold is provided with four(4) injection points for these chemicals:- Corrosion inhibitor- Scale inhibitor - Wax inhibitor - Spare, for H2S scavenger

Downstream the last injection point there is a change of pipe material: From this point on acarbon steel pipe spec with a 5 mm corrosion allowance is applied. These lines are insulated

only.Tie manifold ties in into the barred tee of the vertical 6 riser. The manifold is provided with a 6flanged off connection for a future riser for an incoming pipeline.

Design Requirements

Pipe line material: Up to and including last injection point: UNS 531803 (Duplex)Downstream last injection point: CS with 5 mm CA

Design pressure: Up until HIEPS+PSVs: 345 bargDownstream PSVs: 115 barg

Design temperature: -20/100 oC.

Insulation: Up until HIEPS+PSVs: Electrical tracing set at 35 0CDownstream PSVs: Heat conservation.

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3.4. RISER CONNECTION 6


Via a vertical 6 riser the Jacky WHP is connected to the subsea export line to the BeatriceAlpha host platform.The riser is provided with with a vertical pig launcher, a barred tee, an ESDV at the top deckand runs via the jacket monopile to a flanged off connection to the subsea pipeline to BeatriceAlpha.A drain valve is provided upstream of the ESDV to allow draining of the production lines andmanifold. Draining of this riser is achieved by pushing the liquid inventory to the liquid collectingvessel with nitrogen.

Pipe line material: CS with 5 mm CA

Design Requirements

Design pressure is 115 bargDesign temperature is -20/100 oC.

Insulation: For heat conservation. Hold, to be confirmed by Operation

3.5. WATER INJECTION SYSTEM

COMPANY may install a water injection facility at a later time, configuration of the injectionfacility will be by COMPANY how ever deck space has been allowed for should COMPANYelect to install seawater lift pump filters and injection pump on the Jackey platform, additionally asea water lift pump caisson and biocide injection are pre-installed on the Jacky facility for anyfuture sea water injection system.


Sea water is used to for water injection into the reservoir. The required pressure at the injectionwell head is 143 barg.

The design of this sea water injection system will be determined by the operator.

Design Requirements

Flow rate: 15,000 bwpd (79.3 m3/h)Material: Duplex

Design pressure: 165 barg (1500#)Design temperature: -20/50 oC.

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3.6. CHEMICALS STORAGE TANK JK-12-T-102/202/302/402


A multi-compartment tank JK-12-T-102/202/302/402 is used for storage of chemicals.The compartments will be filled up via hoses from a service boat once every month.The chemical storage tanks and chemical injection pumps are located in a bunded area.

Design Requirements

Material: SS316LDesign pressure: Atm.Design temperature: -20/+ 50 oC.

3.7. CHEMICAL INJECTION PUMPS JK-12-P-101/201/301/401/501


Each tank compartment is provided with a dosing pump skid.Each skid consists of a single dosing pump, a calibration pot, a dampener, relief valve, flowgauge and the necessary piping/tubing with valves.

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ChemicalVolumeGross(m3)

VolumeNett(m3)

DimensionsL x B x H(m x m x m)

JK-12-T-102

Hypochlorite (14wt%)

2.5 2.00.75 x 1.35 x2.50

JK-12-T-202

Wax Inhibitor 7.5 6.02.25 x 1.35 x2.50

JK-12-T-302

Corrosion Inhibitor 7.5 6.02.25 x 1.35 x2.50

JK-12-T-402

Scale Inhibitor 2.5 2.00.75 x 1.35 x2.50

Total 206.00 x 1.35 x2.50

PumpTag

ChemicalCapacitym3/h

DutykW

DesignPressurebarg

DesignTemperature0C

Material

JK-12-P-101

Hypochlorite(14wt%)

0 0.100 0.75 115 -20/+50 SS316L

JK-12-P-201

WaxInhibitor

0 0.010 0.25115

-20/+50 SS316L

JK-12-P-301

CorrosionInhibitor

0 0.010 0.25 115 -20/+50 SS316L

JK-12-P-401

ScaleInhibitor

0 0.010 0.25 115 -20/+50 SS316L

JK-12-P-

501

Common

Back-up 0 0.010 0.25 115 -20/+50 SS316L

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3.8. VENT SYSTEM


The Jacky WHP will be provided with a vent collecting system with open release to atmosphereat safe location.The production lines and manifolds are vented via the kicker line connection (= highest point).A 4 blinded off RF flange is provided to connect the vent system to the drilling rig.The system is provided with a cyclone separator to remove entrained liquid from the ventedvapours. The vent system is provided with a liquid collecting vessel. This vessel also serves tocollect drained liquid from the production lines and the riser upstream the ESDV. The liquid fromthis collecting vessel is pumped back to the production manifold.

3.8.1 Vent Cyclone JK-14-V-01

Entrained liquid from the vented vapours will be separated off.Dimensions: Diam: 400 mm

Height: 1200 mm

Design Requirements Vent System

Material SS316LDesign pressure: 5.0 bargDesign temperature: -70/+ 50 oC

3.9. DRAIN SYSTEMS

Liquid from the vent cyclone and drained liquids from the production lines will be collected in avessel. The collected liquid will be pumped back to the production manifold.Rain water is first directed to a skimmer vessel (oil slot) to remove hydrocarbon contaminationbefore it is discarded to via the monopole to the sea on gravity.Skimmed oil will be manually drained to the liquid collection vessel.

3.9.1 Liquid Collecting Vessel JK-16-V-101

Dimensions: Diam: 800 mmHeight: 2500 mmVolume: 2.4 m3

3.9.2 Oil Slot JK-16-V-102

Dimensions: 2.5m x 1.5m x 2.0mVolume: 7.5 m3

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3.10. FIRE WATER DRY RING MAIN


On dry fire water ring main will provide passive fire water coverage during drilling/workoveractivities. Supply of firewater will be from the drilling rig.

Design Requirements

Material Galvanised Carbon Steel

Design pressure: 5.0 bargDesign temperature: -20/+ 50 oC.

3.11. J-TUBE UMBILICAL CABLE RISERS

The Jacky WHP is provided with power from the Beatrice Alpha Host jacket via an umbilicalcable tube. Signal cables from/to the host jacket are also guided via a J-tube.Two 12 J-tube umbilical cables will be provided.

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4.0 STRUCTURAL

The Jacky Wellhead platform will be installed in a water depth of 39.380 m (LAT) and has adesign life of 10 years. The substructure is suitable to support the topsides with a deck legspacing of 10 * 13 m. The substructure will be a by 3 suction piles founded mono-tripodstructure having a central column with a diameter of approximate 4500 mm. The stabbing pointelevation is at approximately EL. (+) 15.500 m. Three conductors, one caisson, one 12J-Tubeand one future and one 6 riser and one future are located inside the central column. Thesubstructure will be transported vertically on its buckets. Lifting of the substructure will be bymeans of two trunnions connected to the central column at approximate EL. (+) 14.750 and bytwo padeyes on top of two buckets. All lift points will remain in place for future removal.

The platform topsides consist of four decks and has no helideck. Deck legs of 38 are foreseen.A pedestal crane will be located on one of the intermediate topside columns. Four padeyes willbe located on top of the top deck and will remain in place for future removal. Since the top deckis grated temporary cross braces are required just above the top deck. Access to the water levelis by means of a ladder. It is assumed that the platform will not be sheeted.

At start of the detailed design phase a structural basis of design will be prepared. Structuralanalyses (based on API-WSD 21st edition and AISC 9th edition) to be executed during thedetailed design are:

Load-out, transport and lift analysis for substructure and topside

In-place analysis for substructure and topside

Dynamic spectral fatigue analysis for substructure

Boat impact analysis (based on 3.4 MJ energy absorption) for the substructure

After boat impact analysis for the substructure

Cathodic protection analysis for the substructure

Removal lift analysis for substructure and topside.

The steel weight of the substructure is about 700 mT and is based on an in-place and fatigueanalysis only. Environmental data is taken from revision 1 of PhysE document C187-07-R265.V1-1D dd. 26-07-2007. This is without conductors, risers, buckets and its fixation steel tothe mono-tripod structure. The steel weight of the topside equals about 260 mT and is based onan in-place and lift analysis. This weight is without pipe supports and any architectural weights(e.g. walls and doors). Minimum yield strength used equals 345 N/mm 2.

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5.0 PLOT PLAN & PIPING

The layout of the Process & Facilities for the Wellhead facilities is based on the proposedplatform layout in Contractors tender and incorporates both the HAZOP and HAZID findings anddesign development agreed with COMPANY and early vendor data. AFD Plot Plans areappended in attachment 8.

The plotplan developement takes into account process considerations for the arrangement ofthe various process systems and provides ample space for escape routes and maintenanceaccess. Space allowance for future installation of flow line of future second production well andequipment associate with the well down hole submersible pump has been taken intoconsideration in the plot plan development and tie/ins to the process and utilitiey systems.Space for the installation of a future water injection module has been allowed for on the topdeck.

All process systems have been located in the Main Deck, including systems required for thewellheads such as the Wellhead Control Panel, Wellhead Piping Manifolds, Choke Valves andE&I rooms.

Chemical istorage and injection facilities are located on the well head access deck. Celler deckaccommodates waste water )rain and washdownprocessing prior to overboard discharge. Anywaste oil slops and a pump to pump any collected waste oil back the production manifold forexport with the Jacky produced fluids, also no the celler deck are the export rises isolation valveand provision for any isolation valves associated with the future riser.

Mechanicall handlins study and crane operations hves been taken into account to facilater ease

of operation activities during attendance of the platform from the Betriace A platform.

Overall the design has taken into account the requirement to test and commission systems inthe construction yard and minimise offshore hook/up and commissioning activities.

The Electrical & Instrumentation rooms are located on the platform easten side, locatedbetween the main and top deckforeseen are divided in two layers:- Lower level (man deck) Instrument room- Upper level (well head access deck) the electrical equipment.

A platform specific piping specification has been developed and is appended in attachment XX,in principle process pipingh is duplex steel until down stream of the manifold were it reverts tocarbon steel to match the riser/export pipeline material. Layout of the piping nas taken into

account the requirement for ease of maintenance.

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6.0 ELECTRICAL SYSTEMS

6.1. INTRODUCTION

PurposeThis section of the document defines the minimum overall electrical design requirements for theJACKY Wellhead platform to being engineered and constructed for ITHACA. Energy Ltd.

DefinitionsThe word shall indicates a requirement.The word should indicates a recommendation.

6.2. SCOPE

This section defines the configuration, equipment, performance and operation of the electricalpower generation and distribution system for the JACKY WELLHEAD PLATFORM.Provision in the form of space in the swithchgear and plot space in the electrical rooms will beprovided for the future installation of seawater injection equipment and a varable speed drivefor the future electric submersible pumr fot the future well.

6.2.1 COMPANY free issued equipment

The following equipment will be procured by COMPANY and free issued to contractor who isresponsible for its intergration into the design:

- Sub-sea power and control unbilical together with its hang-off and splitter box.- Electric Submersible Pump (ESP), down well cable and junction box together with the ESP

Variable Speed Drive unit.

6.3. GENERAL DESIGN REQUIREMENTS

6.3.1 Codes, standards, regulations and referencesIn conjunction with this Specification, the Codes, Standards, Regulations and References listedbelow shall be applicable.All installations and specified equipment shall conform in design, material and performance with

the latest editions (including amendments) of all applicable IEC Codes and Standards,European standards.

6.3.2 Environmental conditions

Electrical equipment shall be suitable for long term, continuous operation at part or full load onthe electrical system having the characteristics specified on the data sheet.Equipment shall be suitable, in all respects, for operation in the following site environmental andservice conditions.Maximum outdoor temperature +25CMinimum outdoor temperature -6,5CMaximum indoor temperature +35C

Minimum indoor temperatures +5CAltitude

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6.3.3 Area Classification

To determine the hazardous area's the IP15 will be used.All equipment (including all equipment in package units) for use in classified areas shall complywith the requirements of IEC 60079-14.

6.4. FUNCTIONAL REQUIREMENTS

6.4.1 Operating requirements

As defined in requisitions and data sheets.

6.4.2 Equipment enclosures

The international Standard IEC 60529 outlines an international classification system thatdescribes the sealing characteristics of electrical equipment. The classification system definesthe level of protection provided by enclosures to prevent the ingress of foreign objects andmoisture into the electrical equipment.

The equipment enclosures shall, as a minimum, comply with the following IP classification

- For outdoor, motors IP 56- For outdoor, controlstation and junction boxes IP 56- Dry indoor areas IP 20

- Other areas IP 44

6.5. ELECTRICAL DESIGN PHILOSOPHY

6.5.1 General

The electrical system and associated controls design have been based on the requirements ofthe wellhead platform electrical demands.

The whole of the electrical installation is based on the provision of a safe and reliable supply ofelectricity at all times. Safe conditions are ensured under all operating conditions.

The insulating and dielectric materials used in all electrical equipment is non-toxic and does notcontain compounds that are persistent and/or hazardous environmental contaminants, e.g.polychlorinated biphenyls (PCBs).

System studies and protection reports, etc. shall be provided in support of the design.Such studies will comprise a minimum of the following:- Load flow studies- Fault level studies

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6.5.2 Power distribution & equipment

The Jacky Wellhead platform will get its electrical supply from Beatrice Alpha via a sub seacable.

In the 11KV Switchgear there will be a HV distribution to ESP pumps and transformer for 400VThis transformer will be installed in the LV switch room.The transformers will be equipped with taps on the HV windings.The LV configuration shall be three phase and neutral with a separate earth (TN-S). Singlephase electrical power will be derived from one phase and neutral, of the three phase supply, ata nominal voltage of 230V AC. All 230V MCB will be equipped with 30mA earth fault protection.

A Uninterruptible Power Supply (UPS) 230 VAC isolated systems will be provided for those vitalloads which require a continuous no-break supply of power in the event of a total power supplyfailure.Battery capacity shall be calculated at 10C.

6.5.3 Battery Back-up requirements

Emergency and Escape lighting 1 hour

All instrumentation systems 2 hours

HV Switchgear 2 hours

LV Switchgear 2 hours

ESP pump VSD's 5 minutes

6.5.4 Cabling & wiring

All cable shall be Draka RFOU/BFOU unless stated different.

During the engineering, all power and control cables shall be identified and sized accordingly

Maximum voltage drop from 400V transformer to connection point of mentioned equipment:Lighting and small power 5%Motors normal running 5%Motors by starting 15%

Earthing through cable:Field equipment shall be connected to the PE system through the cable. The braid armour shallbe the earth conductor and it shall be electrically continuous from the field to the centralequipment PE bar.Equipment supplied by single core cables shall be connected to PE by a separate earth cable.

Cable markings:Cables shall be identified by means of unique cable numbers listed on the cable schedule.

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6.5.5 Cable glands

Cable glands/blanking and drain plugs shall be selected as follows:- Plastic enclosures (relevant for field cables) plastic- Metal enclosures (except aluminium) brass- Aluminium enclosures stainless steel /nickel plated brass- The certifications of the cable glands/blanking/and drain plugs shall comply with the

certification of the equipment in which the glands/plugs are connected.- Exd gland only to be used on Exd direct entry equipment.

Cable Gland Brand shall be Hawke type 501/453/Universal.

6.5.6 Earthing and bonding

Earthing Overview

Earthing and bonding shall be provided to minimise hazards to personnel and equipment fromshort circuits, lightning discharges and static charges. The system shall be designed to limit orcontain the adverse effects of electromagnetic interference on instrumentation and controlsystems. In addition to any cable armouring, the metallic non-current carrying parts of allelectrical equipment shall be bonded to the main, plant earth.

Earth bar

Earth bars shall be fabricated from copper and provided to suit number and size of connections.

Earth bars shall be connected to the nearest convenient main structure point through aninsulated earth conductor.

Earth boss

Where earth bosses are used, each earth boss shall only have one connection. Bonding bossesin outdoor and exposed areas to be coated to prevent corrosion.

Metallic enclosures

The metallic enclosures of electrical equipment shall be bonded to the plant earth grid. Themetallic enclosures of non-electrical equipment, e.g. tank, shall also be bonded to the plantearth. The bonding shall be made with two independent earth connections. The cross section of

the cables shall be sufficient to avoid mechanical damage. The cables shall be bolted to earthbosses who are welded to the structures.

Cable ladders / cable trays

All sections of cable ladders and cable trays shall be bonded. Begin and the end of thetray/ladder shall be connected with the metallic structure.

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6.6. LIGHTING DESIGN

6.6.1 General

The lighting installation within the JACKY WELLHEADPLATFORM complex is designed toaccommodate two categories of lighting. These categories shall provide an illuminatedenvironment in which:a) normal working can be carried out without the need for supplementary illuminationb) escape routes and exits are clearly illuminated.

6.6.2 Lighting Categories

Two basic lighting systems are being provided:- Normal lighting the permanently installed lighting operating from the supply in normal

use.- Emergency/Escape lighting that part of the emergency lighting which is provided to

ensure adequate illumination for evacuation/escape purposes.

Escape lighting is equipped with batterys with 1 hour autonomy.

6.6.3 Luminaire types

Area illumination is accomplished by utilising luminaries of the following types, based on adetailed study of the area and selecting the most suitable ones for the areas in which they are to

be installed.- High pressure sodium discharge. (Chalmit)- Tubular fluorescent. (Victor trident)- Battery backed fluorescent. (Victor trident)

6.6.4 Levels of Illumination

The general illumination levels, measured at the working plane or 1 m above the floor level in ahorizontal plane, are shown in the table below. These values have been used as a basis for thedesign of new installations. The tabulated illumination levels apply when the luminaries are dirty,i.e. after taking account of the following fouling factors:

Location Fouling Factor

Plant areas (both indoor and outdoor): 0.80

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6.6.5 Required Illumination Level

REQUIRED MINIMUM ILLUMINATION LEVELSAT WORKING PLANE OR 1m ABOVE FLOORLEVEL IN A HORIZONTAL PLANE.

LOCATION Normal lightingillumination (Lux)

Emergency lightingillumination (Lux at floorlevel, escape routes &doors)

Internal Areas

HV Equipment room 300 1

E/I Equipment room 300 1

Messing 300 1

Deck area 50 1Walkways, Platforms, Access Ways, StairsAnd Ladders

20 1

Reading Instrument/Equipment 100 1

6.6.6 Aircraft Warning Lights

Aircraft Warning light where required.

6.6.7 Distribution and Control

Electrical power is distributed to lighting systems at single phase and neutral from three phaseand neutral distribution switchboards. MCBs have been used to protect final sub-circuits, with16A being the maximum rating for circuits supplying lighting.Platform fluorescent lighting is controlled via a manned/unmanned switch.Flood lights are controlled via a switch in the E/I equipment room (only powered when platformis manned.

6.7. SMALL POWER DESIGN

The small power installation within the JACKY WELLHEAD PLATFORM complex has beendesigned to accommodate convenience & power socket outlet.For maintenance purposes an adequate number of 230V 16A single phase, neutral and earth

convenience outlets, have been provided at suitable locations.Type GHG 511 4306 R000?

6.7.1 Welding Socket Outlets

Welding outlets are 3 phase, neutral and Earth (5 pin) rated for 400V. These outlets are ratedfor 63A and suitable for outdoor installation. Located on every deck except Celler deck.Type GHG 514 4506 R??01

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6.8. TRACE HEATING

The trace heating installation within the JACKY WELLHEAD PLATFORM has been designed toaccommodate two categories of heating.These categories provide the following: -a) Winterisation (frost protection)b) Process tracing

6.8.1 Self-Regulating/Self-Limiting Heaters

Self-regulating/self-limiting heating tape has been utilized.Type BartecElectrical power is distributed to trace heating systems at single phase and neutral from threephase and neutral distribution switchboards. MCBs have been used to protect final sub-circuits,with 16A being the maximum rating including 30mA earth fault protection for

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7.0 INSTRUMENTATION AND COMMUNICATION SYSTEMS

GeneralThe Instrumentation One combined Electrical/Instrumentation room is provided in a dedicatedtwo level container on the Main deck of the Jacky Wellhead Platform.The rooms have a light overpressure. Air corridors are not foreseen.As no data is available for the existing Beatrice Alpha platform systems in the ITT Package, allactivities and/or modifications on Beatrice Alpha are excluded.

Scope of supply

The Scope of Supply comprises the following:

-

Integrated Control & Safeguarding System (ICSS)- Telecommunications

- Hydraulic Wellhead Control Panel (WHCP) (two (2) well outfitted, space for one (1)additional well provided)

- Corrosion Monitoring System

- Downhole Gauge Equipment

- Field instrumentation (On/Off valves, Control valves, Transmitters & Gauges)

- Gas detection equipment

- MatrixesThe instrumentation equipment (except field instruments) will be installed in the dedicated E&Iroom (see section 6.8)

Integrated Control and Safety System (ICSS)

An Integrated Control & Safeguarding System will be provided.

The system shall consist of Wellhead- and Utility Systems.The system shall interface the Rig Control Network and Safety System via an optical andhardwired connection.

The ICSS shall monitor and control all operations performed within the boundaries of the utilityand wellhead module.

The ESD and Gas system shall be integrated into the ICSS.The alarm system shall provide audible/visual warning of faults in machinery, processequipment and control systems, etc.

If space permits components of the telecommunication system will be installed in the ICSScabinet.

An Engineering Station shall be installed in the combined Electrical/Instrumentation room.Dependant on Ithaca requirements this will be a laptop or desktop computer.

Telecommunications

A dual redundant fail safe telecommunication system shall be installed utilising the fibre opticcable that is part of the HV cable.The communication system comprise of patch panel, routers/switches, converters and requiredcables.If space permits components of the telecommunication system will be installed in the ICSScabinet.

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Telephone System

The existing automatic telephone exchange, PABX, on Beatrice Alpha will be used to cover theadditional area/spaces on the Jacky Wellhead Platform. It is assumed that two spare extensionsare available.

Hydraulic Wellhead Control Panel (WHCP)

A Stainless Steel Hydraulic Wellhead Control Panel shall be provided for 1 production well and1 injection well with provisions for actuating required control & on/off valves. Furthermore, spacewill be provided for one (1) additional well.

Corrosion Monitoring System

A Corrosion Monitoring System using Field Signature Method (FSM) is foreseen.Dependant on Ithaca requirements and/or existing Beatrice Alpha systems another method maybe preferred.

Downhole Gauge Equipment

A surface installed Acquisition System for Downhole pressure & a temperature measurement isforeseen.Downhole pressure & temperature Gauges and interconnecting cables are assumed to besupplied by Company.

Field instrumentation

All necessary field instrumentation, e.g. On/Off valves, Control valves and Transmitters will bedelivered as indicated on the P&ID diagrams attached to this document.For Oil and Seawater flow, transmitters of Coriolis type are foreseen.Ship collision detection shall use motion detection switches.

Fire & Gas detection equipment

For gas detection two acoustic leak detectors and two point gas detectors are foreseen.Fire detection is not included other than fusible plugs in SSV & ESDV hydraulic supply.

Matrixes

A matrix panel with key switch and indication function will be wall mounted in the combinedElectrical/Instrumentation room.

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8.0 LIFE SAVING EQUIPMENT

Tenderer has foreseen Life Saving Equipment is for 6 (six) persons available on the platform.For additional personnel brought on to the platform during Commissioning, Installation andMaintenance temporary Life Saving Equipment shall be provided.

Safety Equipment

All personnel visiting the platform shall have successfully passed the required safety andemergency response training and shall be familiar with the rescue means available on theplatform.Table 1: Overview of Portable Rescue Equipment

Jac

kyWHP

Description Detail

1 Inflatable life raft Minimum 6 persons, throw overboard, self-inflating.Portable VHF/FM marine radio to be taken from LVSwitch room or from Marine vessel.

6 Personal descent units to descend into the life rafts; the units can beattached to an anchoring/launching frame

6 Personal protection equipment Smoke mask, torch, fire gloves Located insideCanteen

5 Life buoys Top Deck WellheadAccess Deck

Main Deck

(2 with light and smoke)

(1 with rope)

One @

platform West& one @platform East(with light andsmoke signal)

One @

platform SouthEast (with lightand smokesignal) & one@ platformNorth

One @

platform West(with rope)

1 First aid kit Located in E&I rest area

1 Stretcher Located in E&I rest area

3 Eye wash stations(Two Bottle package)

One located on West side Top Deck nearbyentrance Chemical Storage ContainerOne located on Wellhead Access Platform nearbyEntrance High Voltage Switch roomOne located on Main Deck at entrance LV Switchroom.

2 Fire blankets One located on Wellhead Access Platform nearbyEntrance High Voltage Switch roomOne located on Main Deck at entrance LV Switchroom.

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Following provisions shall be hand carried to the platform for those travelling to Jacky WHPfacilities:

Survival suits Each person arriving with Survival suit

Man Over boardbeacons

Each person arriving wearing MOB beacon.

Life jackets Each person arriving with Life jacket

Crew Basket To be available with Drilling platform or Marine vessel

Fire fighting suits To be available with Marine Vessel

Breathing sets Set of self-contained air breathing apparatus (with onecompressed air bottle each) of make Drger, type PA-80-A-1800-1 to be available with Marine vessel

Oxygen kit Drger Akuut 2001 breathing aid to be available with Marine

vessel

Portable Fire Fighting Equipment

In total 7 fire extinguishers are foreseen on the platform. The location and type is given in thenext table.

Deck / Room CO2 Powder

Number

Fill(kg)

Number

Fill(kg)

Top Deck 2 12

Wellhead Access Deck 1 12HV Switch Room Wellhead Access Deck 1 5

Main Deck 1 12

LV Switch Room Main Deck 1 5

E&I rest area Main Deck 1 12

TOTAL 2 5 5 12

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ATTACHMENTS

ATTACHMENT 1 STRUCTURAL -- Isometric Sketches Structural Steel Topsides & Jacket

ATTACHMENT 2 Main Equipment List

ATTACHMENT 3 P&ID Diagrams

ATTACHMENT 4 Key One Line Diagram 11 kV

ATTACHMENT 5 400V AC Distribution MCC One Line Diagram

ATTACHMENT 6 Lay-out E&I rooms

ATTACHMENT 7 Electrical Load List

ATTACHMENT 8 Layout Drawings

ATTACHMENT 9 Instrumentation Block Diagram

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Attachment 1

STRUCTURAL: Isometric Sketches Structural Steel Topsides & Jacket

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Attachment 2

Main Equipment List

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Attachment 3

P&ID Diagrams

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Attachment 4

Key One Line Diagram

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Attachment 5

400V AC Distribution MCC One Line Diagram

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Attachment 6

Lay-out E&I rooms

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Attachment 7

Electrical Load List

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Attachment 8

Layout Drawings

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Attachment 9

Instrumentation Block Diagram

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