Marathon Oil Company

INSTALLATION OPERATION AND MAINTANANCE MANUALFOR

RUBY FPSOELECTROSTATIC COALESCER INSTALLATION/COMMISSIONING

START-UP AND SHUTDOWN

OPERATION

MAINTENANCE/TROUBLESHOOTING

OPERATING PROCEDURESPRIVATE

******************************************************************************

WARNING - DANGER

EXPLOSIVE/HAZARDOUS GASES AND LIQUID******************************************************************************

Work being performed on this equipment may expose you to conditions which can be hazardous and dangerous, as this equipment or area may contain explosive, flammable or toxic gasses or liquids. Keep all open flames at least 180 feet away.

This equipment must be serviced and operated by properly trained and qualified personnel only.

Do not clean, service, repair, or attempt to perform any work without relieving pressure and purging combustibles.

Check for unsafe conditions and follow your company's safety practices any time work is performed on this equipment.

If you have any questions, contact DPS-Delta prior to performing any work on these units.

TABLE OF CONTENTS

I.Design Basis

II.Installation/Commissioning

III.Start-Up & Shutdown

IV.Operation

V.Maintenance

VI.Troubleshooting

VII.Technical Assistance

I.Design Basis

Electrostatic

Oil Treater

Item

V-1004

Vessel Diameter (ID), mm

3,048

Vessel Length (s/s), mm

10,688

Design Pressure, barg

6.5

Design Temperature, C

120

Operating Pressure, BARG

0.5

Operating Temperature, c

75

Gas Flow Rate, MMSCFD

NEG

Wet Oil (Inlet) Flow Rate, M^3/HR

272.5

Water Flow Rate, M^3/HR

14.2

Normal Inlet BS&W Content, % by vol.3 to 5

Maximum Inlet BS&W Content, % by vol.14

Maximum Outlet BS&W Content, %

0.5

Oil Density kg/m3

805.6

Oil Viscosity @ 140F, Centipoise

4.79

S.G. Water

1.0

Liquid Operating Volume, %

100

Corrosion Allowance, mm

3

Grid Area, M

32.5

Grid Loading, BOPD/ft.

19

II.Installation/CommissioningGrid Installation

The following drawings are required to complete grid installation and electrical hookup to the transformer:

J07183-DPSD-10-R-XD-0001 through J07183-DPSD-10-R-XD-0012The drawings should be studied and all welding inside of the vessels should be complete prior to installing the electrostatic grid assembly and electrical hookup. The installation proceeds from the top down in the following sequence: Float switch

Vertical Insulating Hangers

Unistrut

Angled Hangers

Contact Rods

Entrance Bushing w/cable

Plate grids1. Unpack crating a verify that all components are in good condition and quantities agree with the packing list.2. Locate the Float ball assembly (J07183-DPSD-10-R-XD-010). Bolt assembly to vessel brackets shown on Dwg J07183-DPSD-10-R-XD-008, Left End View, Float Switch Bracket.

3. Locate the 68 pcs 4A/B/C/ Insulating Hangers These items are on Dwg J07183-DPSD-10-R-XD-009, TEFLON INSULATOR ASSEMBLY. Nuts and washers were shipped in a separate box. Install Vertical Teflon insulating hanger in the locations shown on Dwg J07183-DPSD-10-R-XD-008. These bolt to the Grid Support Angle shown on sheet 7, at the designated locations. A total of 32 vertical Teflon hangers are to be installed.4. Install angle iron in vessel. There are four (4) longitudinal angle iron assemblies, each supported independently from a row of 6 teflon hangers per strut 24 total. (Important the shipping support angles are temporary braces and must be removed prior to startup of the vessel) The angle iron should be installed with the L facing inward and upward. The angle iron is shipped in 20 ft pieces, and requires that the ends be either butwelded together or connect with a bolted splice plate. The final unistrut assemblies will need to be cut to length, with 8 clear space from the vessel heads. The bolts on each side of the insulating hangers should be tightened so that no movement of the unistrut will occur when the temporary support braces are removed. 5. Install the diagonal support braces. The diagonal support hangers are to be installed first in the clip locations shown on sheet 8. The bottom of the insulating hanger is then bolted to Bracket A and Bracket B as detailed sheet 9. These are in turn to be bolted to the angle iron at the most convenient location. All hangers should be installed and snugged prior to final tightening of the bolts.6. Install Ground Rods to angle iron. Two ground rods are for float ball contact. They should be installed in the position indicated on sheet 8, and adjusted so that the float ball assembly makes contact with the rod while in the down position. The ground rod assemblies are installed using the provided bolts.

7. Install Contact Rods. The contact rods are installed in the locations shown on sheet 9, using the bolts provided. The high voltage cables should be attached at this time, with the loose cable end being pulled up through the entrance bushing nozzles, for attachment to the entrance.

8. Install Entrance Bushings. This unit is supplied with two (2) entrance bushing assemblies. The entrance bushings install in nozzles N8A & B. Install the flange gasket on the vessel nozzle prior to attaching cable to entrance bushing. Slide cable into hole of the bottom cap of the entrance bushing and secure by tightening nut. Install entrance bushing on vessel nozzle and secure with proper bolting.9. Adjust HV Cable Length. The HV cable between the entrance bushing and the contact should be cut so that there is a minimum of 8 clear space between the cable and any metal component on the vessel. Enough slack should be left in the cable so that the entrance bushing can be removed with the cable attached. Attach a weight to the cable if necessary.

10. Install Clips on Grid Plates. Each Grid plate has four holes in the top. Two (2) Grid Support Straps (Sheet 5) are to be bolted to the grid plates using the 3/8 x 1 bolts, washers, and nuts provided. The grid support straps (Mark 7, Sheet 4) are to be installed in and alternating fashion on the grid plate. Every other grid plate is to be installed to the same unistrut pair. i.e.: the first plate bolts to strut 1 and 3, second plate bolts to 2 and 4, third plate bolts to strut 1 and 3, fourth plate bolts to struts 2 and 4, and so on. The Grid Support Straps must be installed in this alternating manner on the Grid Plates.11. Install grid Plates in vessel. The grid plates/support strap assemblies are next bolted to the unistrut support rails. Care must be taken to maintain 6 clear space around the initial plate. Subsequent plates are installed on 6 centers, maintaining the alternate strut attachment scheme described in section 11 above. Refer the grid assembly drawing on sheet 8 for clarity. Completion of the installation of the grid plates completes the Grid assembly installation.12. Transformer to Entrance Bushing hookup. First, the flexible cable housing by sliding it over the HV Cable and screwing it into the entrance bushing coupling. Care must be taken not to twist the HV cable, as it is soldered in the entrance bushing end cap and will break if twisted. The HV cable is next slid through the HV connection on the transformer, and the other end of the flexible housing is connected to the transformer housing. HV Wire connections should be per the transformer manufacturers instructions.

Electrostatic Oil Treater

The commissioning of the oil treater should follow the procedure as outlined.

1.Installation:

It is very important that all units are installed level. Verify and shim as necessary. Adequate support under the vessel and/or skid must be provided and includes support under the skid beams which the vessel saddles rest on. Weight of fluid inside vessel and piping in addition to weight of equipment (skid, vessel, transformers, access platforms, piping, valves, instrument and insulation) must be taken into consideration.

a.Remove all shipping braces, temporary flange covers and protective guards.

Inventory all parts.

b.Visually check the vessels, the couplings, nozzles, vessel shell and accessory items to see that none have been damaged during shipment. Report any damage as soon as possible.

c.Check level and alignment of the vessels.

d.Install any vessel accessories including grating and handrails and all necessary interconnecting piping which were removed for shipment. Drawings are included in this manual which can be of assistance.

e.Check that all vessel accessories such as pressure gauges, gauge glasses, relief valves, etc. are installed in proper location. Refer to the drawings for nozzle locations, dimensions and general description. In addition, you may refer to vendor literature.

f.It will be necessary to enter the oil treater to remove the shipping braces from the electrostatic grids. We suggest these braces be left in place until the vessel is in the final location.

g.Purge all instrument lines.

h.Check all flanged connections and tighten nuts if necessary.

i.Route all wiring between junction boxes and the master panel. Also provide all control cabling.

j.See Transformer drawing and Manual for additional instructions concerning receiving, handling, storage and installation of transformer.

k.Install transformer and entrance bushing.

l.Connect inlet supply wiring to the transformers. See electrical drawings provided in the Equipment Data Books.

m.Make a final verification check that all wiring, tubing, piping, etc. has all been installed. Once the installation is complete, proceed to the commissioning.

2.Electrical Check:

THIS UNIT PRODUCES HIGH VOLTAGE ELECTRICAL CURRENTS THAT WILL CAUSE SERIOUS INJURY AND/OR DEATH BY ELECTROCUTION. EXTREME CAUTION SHOULD BE USED.

a.Before connecting line power, be sure all wiring is installed and connected. The circuit breaker should be locked in the OFF/OPEN position. Primary voltage supply should be in the OFF/OPEN position; verify with a voltmeter.

b.Verify proper grounding of equipment:

-Transformers are grounded to mounting brackets on vessel

-Junction boxes and circuit breaker boxes to support racks

-Vessel to skid (or platform structure) at one saddle

-Structural skid to platform structure (if applicable)

c.Make sure the vessel interior is free of all shipping braces and tie-down material. The charged electrodes must be free hanging, with no loose material to ground.

d.Using the following procedures, complete all phases of grid electrical check:

Phase 1

MAKE CERTAIN THERE ARE NO EXPLOSIVE GASSES IN OR AROUND VESSEL.

Make certain the circuit breaker is in the OFF position.

Tie the internal low level float switch (grid grounding switch) in the UP position. Make sure there is no contact with the ground rod.

Make certain NO ONE is in or on the vessel.

Close the circuit breaker and read the voltmeter. Voltmeter should read full scale (100%).

Check the primary amperage. Amperage should be between 0-3 amps.

Phase 2

Open the circuit breaker and pad-lock it in the OFF position.

Enter the vessel and release the float switch so that contact with the high voltage ground rod is made. Make sure the float is resting fully on the rod, remove the material previously used to tie the float in the up position from the vessel interior.

Leave the vessel and again make certain no one is in or on the unit.

Remove the lock from the circuit breaker handle and close the breaker switch for about 20 seconds while observing the voltmeter.

The voltmeter should read about 10-15% of full scale.

If the voltmeter reading is in this range, keep the breaker switch closed for about 15 minutes to make certain everything is in order, and the breaker does not trip with no change during this period.

Check the amperage again. It should read 50-80% of full scale.

Return the breaker switch to the OPEN or OFF position and lock it once again.

Make one more internal inspection to be sure the float switch is free to swing upward with fluid rise.

Close and bolt all vessel access manways.

The circuit breaker MUST remain in the OPEN or OFF position and lock it once again.

The unit is now ready for start-up.

3.Commissioning:

a.We suggest a nitrogen purge/test be performed on the entire unit to ensure tightness of all connections as well as for additional safety during commissioning.

b.Bring the instrument air system on line for the package.

c.Verify appropriate supply pressure to each pneumatic instrument.

d.Check all level instruments and control valves for proper operation.

e.Verify proper interface of all the instruments to the master panel.

f.Verify trip points of pressure switches in accordance with Instrument data sheets and/or as per operations personnel, by utilizing inert gas to bleed valves while pressure instrument is isolated.

g.Check set pressures of all relief valves in accordance with equipment tag and/or Instrument Data Sheets.

h.As applicable: Calibrate pressure transmitters by applying inert gas to bleed valve while the instrument is isolated.

i.Check that all pressure indicators and temperature indicators have the proper range in accordance with Instrument Data Sheets or other process documentation.

j.Final verification of proper grounding of all equipment.

III.Start-Up and Shutdown

A.General

1.Start-up of this equipment should be performed only by qualified personnel. We highly recommend that one of our representatives be on site both to check the correctness of the reassembly work and to assure the safe start-up of this equipment.

2.Verify that all instruments possible to pre-calibrate have been calibrated. Verify that all interconnecting piping has been properly tightened. Verify all electrical cables have been reinstalled properly in accordance with the drawings and that main disconnect is in the off position.

3.Verify that the ball valves and any off-skid downstream block valves associated with the relief valves and flare header system are in the correct position.

4.Verify that the instrument air system is functioning properly and all appropriate instruments have the correct air supply.

5.Verify all level instruments/bridles, isolation valves are open.

6.Verify all pressure instruments isolation valves are open.

7.Verify all vent and drain valves on instruments and sample points are closed.

8.Verify control valves' drains and bypass valves are closed.

9.Verify vessel drains are closed.

B.Start-Up

1.Isolate water outlet line of Oil Treater.

2.Slowly allow fluid to enter into the system.

3.Closely monitor the liquid levels in the Oil Treater and downstream equipment.

4.Check pressures and temperatures of the vessels are operating near their operating parameters.

5.Check that liquid level controls are operating correctly as liquid rises within vessels.

6.Check that system is leak free.

7.As interface level in Oil Treater approaches normal interface level, open water outlet isolation valve.

8.Verify oil exits from Oil Treater oil outlet line.

9.Turn on the transformer.

10.Re-check levels, pressures and temperatures for correct operating parameters.

C.ShutdownNormal shutdown can be achieved by use of the SDVs and/or manually closing block valves. For prolonged shutdowns proceed with the following procedures:

1.Isolate inlet and outlet lines.

2.Turn off and lock transformer.

3.Drain vessels.

4.Vent vessels.

5.Drain oil and water lines.

6.Drain instruments.

7.Purge vessels and lines with nitrogen.

IV.OPERATION

A.Basic OperationThe purpose of the Electrostatic Oil Treater is to remove produced water from crude oil. See Design Basis section for inlet and outlet content percentages. The crude oil is heated up to approximately 75C off-skid prior to entering the oil treater. Heating up the oil allows for improved separation of the water from the oil. Freewater and solids drop out towards the bottom of the vessel. Oil flows vertically upwards through the horizontal vessel. Distribution boxes and spreader boxes near the bottom and collector pipes at the top ensure uniform oil flow across the grids. As the oil and entrained water come into contact with the electrical field in the grid area, final coalescing of the water takes place. A water level is maintained and controlled by an interface level controller which operates a water discharge valve. The water falls into the water phase and the clean oil continues to rise to the top of the vessel where it is collected and is discharged through the clean oil outlet line.

The oil treater uses high voltage current to establish an electrostatic field for coalescing of the water droplets. An externally mounted, oil immersed, high voltage 100 KVA transformer is furnished to provide power to the grid. The transformer is equipped with a reactor which provides 100% circuit utilization for continuous power. The high voltage secondary of the transformer is connected to the grids through high voltage entrance bushings which insulates it from the surrounding metals. All electrical components are suitable for hazardous area installations.

B.Safety SystemsVarious safety systems are typically provided on the unit to prevent hazardous situations:

The first category of safety devices provides alarms in case of an abnormal process condition and informs the operators at the control panel of possible system malfunction. The second category of safety devices shuts off flow into the process system in case of an abnormal process condition. The third category of safety devices backs up the safety devices in the second category. Relief valves direct fluid flow to a relief header system in case of over-pressure condition in the vessel.

-A fusible plug system per API RP 14C should be provided with oil treater vessel for fire detection. Often times, a pressure switch monitors fusible loop system pressure. An alarm light will light at an Instrument Alarm Junction Box or control panel if TSE loop pressure falls below PSL setpoint.

-Check valves are installed in oil outlet, and water outlet lines to prevent reverse fluid flow situations.

C.Normal OperationsDuring normal operations, oil flow rates, pressures, temperatures and the oil/water interface level should be monitored daily and maintained within design parameters and normal operating ranges. The oil leaving the oil treater vessel should be tested periodically to verify compliance with company requirements such as % BS&W content.

Similarly, the water leaving the vessel should also be analyzed. Sample points are provided to facilitate operators with drawing samples from different sections of the vessel and from oil outlet piping.

During normal operation at normal flowrates, the light bulb at circuit breaker panel on side of vessel below transformer should be on or at least dimly lighted. The light bulb will illuminate brighter with increased water content in the incoming crude oil.

Operators should check for leaks on a daily basis. Leaks should be repaired immediately.

D.Abnormal OperationsSee Troubleshooting section for typical problems, symptoms and suggested remedies.

V.Maintenance

PERIODIC MAINTENANCE AND TESTING ARE MANDATORY FOR SAFE OPERATION.

A.Safety Valve

A safety valve requires periodic inspection to assure the operator that the valve is not sticking and will provide "safety relief". Pressure testing is the approved method.

B.Valves and Controls

Any valves and controls requiring lubrication should be properly lubricated at selected intervals to assure best performance. Maintenance and repair of valves and controls depend upon severity of service (i.e., mud, sand, etc.). Refer to vendor literature.

C.Cleaning and Inspection

Vessels should be cleaned and inspected at the end of the first 6 months on heavy oil service and at the end of one year on lighter oil service. Where heavy sand is suspected, cleaning every 60-90 days may be necessary. Frequency of future cleanings can then be determined.

D.Please contact DPS-Delta for additional and specific maintenance instructions.

E.Routine Maintenance Recommendation

a.Daily:

-Check pressure gauge readings

-Check gauge glass levels (clean as required)

-Note any irregularities

-Check for leaks and repair as required

b.Weekly:

-Manually actuate the drains (15-30 seconds) to remove contaminants

-Inspect controls and valves for proper operation

-Drain liquid from all instrument air regulators

-Check that transformer light bulb is operative

c.Every Six Weeks:

-Test level, temperature and pressure safety devices (including TSE Loop)

-Confirm that light bulbs for alarm lights at Control Panels/Junction Boxes are in good working condition.

d.Semi-Annually:

-Check the pressure relief valves

-Inspect vessel internals for scale and sludge accumulation and corrosion (especially pits) and clean as required

-Inspect, clean and repair valves and controls, replace damaged trim

e.See Transformer Manual located in Equipment Data Books for transformer maintenance recommendations.

VI.Troubleshooting

A.General

PROBLEM

SYMPTOM

REMEDY

Low Pressure

Break in production inlet flowlineCheck piping for leaks

Oil Flow Control valve malfunctionAdjust, repair or replace as

needed

Safety relief valve stuck open

Repair or replace relief valve

Water level controller

Repair or replace as required

(transmitter) malfunction

Water dump valve stuck open

Check level control and dump

valve for proper operation.

Repair or replace as required.

Drain valve leaking

Check to assure trim is in good condition and that trim

is clear of obstruction.

Vessel or piping leak

ASME vessel repair or repair piping leaks

High Pressure

Flow control valve or

Adjust, repair or replace as

controller malfunction

needed

Outlet line plugged

Clean or replace piping

Relief valve inoperative

Must be replaced

Excess Water in OilWater outlet valve not operatingRepair or replace water valve or level control

Oil-water interface level controlRepair, replace or adjust

not operating properly

Excess flow rates

Check operating design conditions

Chemical overtreat/undertreatmentContact chemical treating or representative for adjustment or changes in treatment

Sand or sediment build-up

Clean vessel

Excess Oil in WaterFlow rate greater than design

Check operating conditions

capacity

Oil outlet valve not operating

Repair or replace

Emulsion breaker overtreatmentContact chemical treating

or undertreatment

representative for adjustment or changes in treatment

Corrosion inhibitor overtreatmentContact chemical treating representative for adjustment or changes in treatment

Oil-water interface level control notAdjust, repair or replace

operating properly

Water valve stuck open

Adjust, repair or replace

Drain valve not closed

Adjust, repair or replace

Inlet fluid too cold and/or viscousApply heat

Oil-water interface too low

Raise interface level

B. Troubleshooting the Electrostatic Oil TreaterIt is necessary to maintain a balanced program combination of chemical, heat, time and electricity in order for the unit to perform and also be changed in order to regain a balanced system. For example, if the chemical rate is decreased, it may be necessary to increase temperature to compensate for the decrease in chemical penetration of the emulsified water droplets. If all components are constant and the outlet oil quality has changed, it can be assumed the incoming emulsion has changed. Changes in emulsion quality are most likely to be proceeded by well workovers or introduction of new wells. Whatever the case, a change in the dehydrating program will have to occur.

If the outlet oil quality is not to specification, the following troubleshooting check list should be consulted.

1. Check the system for the following irregularities:

-Low vessel temperature-

a. Inlet thermostat set too low (by others)

b. Low level shutdown

-A normal condition which will correct itself with additional production

-A faulty drain or water valve

-Loss of chemical or reduction in chemical rate (by others)-

a. Chemical pump malfunction (by others)

-Loss of power to chemical pump

-Bad or stuck check valve in chemical pump

-Broken or plugged chemical line

-No chemical in tank

-Air lock

-Excessive sludge build-up on the interface of the coalescing section-

a. Inadequate heat or chemical

b. May require a change or additional type of chemical

c. It may be necessary to remove excessive sludge from the system

-High interface level in coalescing section-

a. Interface control malfunction

b. Defective water dump valve

c. Water valve sanded off or otherwise plugged

d. Loss of instrument supply

e. Interface adjustment to lower setting

-Increased flow rate through the system-

a. Recycle at excessive rates

b. Field surging

c. Addition of new wells to the system

-Recent field rework-

a. Acidizing wells

b. Hot oiling wells or flow lines

2. Electrical Malfunctions:

*No light, no voltage, and no current, dehydration efficiency decreased:

a. Loss of electrical power to the transformer

-Circuit breaker open

-Master fuse open

-Master switch open

*Transformer light dim or out, low or no voltage and high current. Note: If the unit is not equipped with an ammeter, a clamp-on ammeter may be used to determine transformer current.

a. Any of the problems listed in A of this check list can give these indications. If the light is glowing even slightly, or the current shows some variation from time to time, the problem is more than likely one or more of those listed under A of this check list and not an electrical problem.

*No transformer light, near zero voltage and current holding steady near maximum. Note: The maximum current for your transformer may be determined by dividing the KVA rating by the applied voltage. For example, a 75 KVA transformer operating on 460 volts would draw approximately 163 amps (75,000/460 = 163). A 100% reactance transformer should never pull more than the calculated value of current.

a. A low faulty level in the coalescing section will allow the low level safety float to ground out the high voltage grid, resulting in the above symptom.

-This could be the result of excessive water removal from the coalescing section and will likely correct itself when the level is restored to normal production.

-Another likely cause is a faulty drain or water control valve.

b. Any one or more of the irregularities listed under A of this check list, in extreme, could give these symptoms and should be checked out before proceeding with this check list.

c.THIS UNIT PRODUCES HIGH VOLTAGE ELECTRICAL CURRENTS THAT WILL CAUSE SERIOUS INJURY AND/OR DEATH BY ELECTROCUTION. EXTREME CAUTION SHOULD BE USED.

An electrical short within the high voltage circuitry of the system is the most likely malfunction that will give these symptoms. Note: The low voltage side of a 100% reactance transformer is not protected by the reactor; thus a problem in the low voltage side would not give these symptoms. To isolate a short in the high voltage circuitry, take the following steps:

-Disconnect and padlock the transformer circuit breaker in the OFF or OPEN position. Be CERTAIN that primary power is not reaching the transformer. Verify with a voltmeter.

-Remove the lid from high voltage junction box and make a visual inspection. Look for burner wiring and/or discolored insulating oil.

-If all appears normal, isolate the transformer from the vessel by unplugging the transformer secondary wire from the receptacles which will be marked 16.5KV or 23KV. Be sure the plugs and lead wire are well away from the high voltage connections.

-Temporarily secure the lid on the high voltage junction box and restore power to the transformer and observe the symptoms.

-If the same symptoms are observed, low voltage and high current, the transformer secondary wiring or high voltage feed troughs are faulty.

-If the readings return to normal, 480 volts and low amperage, and no discoloration of the oil is observed around the entrance bushing conduit opening, the problem is inside the vessel.

d.If it is determined that the short is inside the unit by Step C above, the following procedure should be observed:

-Reaffirm that the symptoms are NOT the result of irregularities covered in Section A of this check list. They would appear as an electrical short inside the unit.

-Turn OFF all electrical power to unit.

-Remove the production from the system and depressurize the unit.

-Disconnect and remove the entrance bushing and visually check for burned appearance (tracking). Be sure the bushings are clean. Sulfides or B.S. build-up over the length of the bushing can cause shorting. If there are no visible signs of damage, a more complete determination can be made with a megger to determine if there is any conductivity between the wire conductor and the pipe. Conductivity here indicates a bad bushing.

-If the bushing is good, drain the vessel and remove manway cover.

-Before entering the vessel make sure all company vessel entrance procedures have been followed. Once again be sure the power is OFF and the circuit breaker switch is locked in the OFF position. Also, be sure the vessel has proper ventilation.

-Visually inspect the insulating hangers that support the charged electrode assembly. Burned or otherwise damaged insulators should be replaced.

-Check the charged electrodes for any foreign material that may be touching either electrode and ground. Also, between the vessel wall and the electrodes and between electrodes themselves.

-Inspect the safety low level float switch. Be sure the float assembly moves freely without binding, also that the float has not leaked and filled with liquid preventing it from lifting off the grid when the vessel is filled.

-If a visual inspection has not revealed the problem, a more complete check will be necessary. With the float assembly lifted away from the grid assembly, a megger may be used to check conductivity between each charged electrode and ground, and each other. Any conductivity will indicate that one or more of the insulating hangers are causing the problem. It may be necessary to remove the insulators one at a time individually. Any conductivity across an insulator indicates a bad insulator.

*Light on, voltage normal, current very low with treating efficiency decreased-

a. This is an unlikely symptom but could be caused by a broken or loose high voltage cable.

-A simple check for this problem may be accomplished by raising the interface level in the coalescing section. As the current should increase drastically in the high voltage circuitry is good. If it does not, an open dies exist in the high voltage cable which is used to carry the voltage from the end of the feed through bushing to the charged electrodes.

*Light on, normal voltage, normal current, treating efficiency decreased-

a. A problem that would display these symptoms is the production of a stable low water cut (2-3%) emulsion so finely dispersed that it is concealed from the electric field. This type of emulsion is likely to be chemically stabilized and usually the result of well rework of stimulation.

*No light, no voltage, normal current, treating efficiency normal-

a. Fuse blown in 100V tertiary winding of transformer

-Located in low voltage junction box

*Circuit breaker kicks off immediately on energizing-

a. Short in primary (low voltage) side of transformer or associated circuitry.

b. Moisture in circuit breaker.

*Circuit breaker kicks off intermittently or on hot days-

a. Faulty circuit breaker

b. Breaker sized too small

VII.Technical Assistance1)DPS-Delta can supply Engineering and Technical personnel for start-up, training and commissioning assistance for all products offered.

This service includes consultation, inspection, technical direction of installation or repair (labor by others), start-up, initial adjustment, readjustment, tests and instruction of plant personnel for operation and maintenance of APS supplied equipment.

This service is performed only by trained, duly qualified representatives. Such service does not include the supply of any parts. Service is performed only on the basis of a bona fide purchase order for field service issued by the ultimate customer or his authorized representative, covering the specific service desired. Billings will be based on daily rates in effect at the time service is rendered.

For durations exceeding 90 days, rates and policy are subject to negotiation prior to services being rendered.

2)TRAVEL

When clients request DPS-Delta personnel for Engineering and Technical assistance and/or start-up assistance, charges shall be in accordance with terms of this section.

3)SERVICE RATES

Please see DPS-Delta published rates.

4)MISCELLANEOUS

a)Miscellaneous costs shall be charged at documented rates unless otherwise noted.

b)Client will be charged costs for special documentation or fees required for client requested work by governmental authorities, or by insurance, licenses, permits, visa fees or other obligations specifically incurred in the execution of any project.

c)Client will also be charged for taxes, imports, duties and similar charges imposed by government authorities.

5)LIMITATION OF LIABILITY

DPS-Delta shall not be responsible for the acts and workmanship of the employees, contractors, subcontractors or agents of the client. APS shall not be liable to the client for any loss or injury to persons or property caused in whole or in part by the negligence of the client, its employees, contractors, suppliers, or their employees, agents or subcontractors. In no event shall APS be liable for special, indirect or consequential damage.

6)INVOICING

On completion of the services performed under this contract, or on a monthly basis, in the case of prolonged duration of the services being performed, and with prior written approval by Purchaser, Supplier shall submit its statement of services and supporting documents in triplicate.

a)Payment

Payment shall be met within 30 days from receipt of correct invoice with all supporting information.

b)In the event of Suppliers personnel being incapacitated through injury or illness, Client will be responsible for transportation home and for provision of medical treatment and welfare. Supplier shall arrange for an immediate replacement to be provided at the site of work.

CONTACT:

DPS-Delta, LLC

Service Department Manager

Phone:337-365-2492

Fax:337-364-9814