This is a good document for electrical jointing and terminations activities

1. INTRODUCTION
KOJIS GLOBAL NIGERIA LIMITED RC: 618910
• KOJIS GLOBAL SERVICES NIGERIA LIMITED is a privately owned Engineering, Construction, installation &
Maintenance, Procuring and Consulting Firm established in the first quarter of the year 2005 as a limited Company.
• This company operated as KOJIS GLOBAL SERVICES since the first quarter of the year, 2000 as a registered
Business Organisation until it was incorporated in the year, 2005 with the Registration Certificate, R. C. Number:
618910 with her Head Office at 120, Ahoada Road, Omoku – Onelga, Rivers state of Nigeria.
• Kojis has branch offices in Port Harcourt – Mile 4 Rumueme, Lagos – Mushin and Abuja – Bwari Area Council.
• KOJIS being a Contractor to the NNPC / NIPEX Group in the Specialized Category is in a position of Professional
leadership in her field, based on an established record of Professional excellence and prompt / adequate response to
her noble Clients’ needs in Nigeria / Abroad.
• Kojis has various Equipment certifications which is renewable yearly from the Nigerian Content Equipment
Certification and Monitoring Board in the field of Electrical / Instrumentation; Mechanical; Civil Engineering
• KOJIS has reputation of successfully completed projects with good number of major companies operating in Nigeria/
Abroad. These include: I.O.C’S, Daewoo Engineering & Construction, Sudelettra, Notore Chemicals, Indorama
Petrochemicals, Federal Government, NDDC, CISCON, DANELEC ETC.
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2. THE MAJOR AREAS OF OPERATION OF KOJIS INCLUDE BUT
NOT LIMITED TO:
1. ELECTRICAL & INSTRU/ TELECOMS/ MECHANICAL/ CIVIL PROJECT DESIGN,
PROCUREMENT, CONSTRUCTION, INSTALLATION AND MAINTENANCE (EPC).
2. ELECTRICAL & INSTRU/TELECOMS/MECHANICAL/CIVIL PROJECTS CONSULTANCY/
MANAGEMENT AND CONTROL SERVICES (QUALITY ASSURANCE AND QUALITY
CONTROL).
3. RURAL ELECTRIFICATION AND MAINTENANCE & AS-BUILT DOCUMENTATION.
4. INDUSTRIAL POWER PLANTS INSTALLATIONS AND ERECTIONS / COMMISSIONING
(ELECT/MECHANICAL/CIVIL).
5. DESIGN OF ELECTRICAL/ELECTRO-MECHANICAL/MECHANICAL SYSTEMS & EXECUTION.
6. ENGINEERING CONSULTANCY/PROCUREMENT & MANPOWER DEVELOPMENT SERVICES
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3. KOJIS PORTHARCOURT WORKSHOPS–SOME ELECTRICAL POWER&INSTRUMENT/CONTROL PANELS HANDLED IN WORKSHOP
Mobil Unltd
• Fabrication and construction of support/complete wiring of three Numbers 200kw downhole pump starter panel.
• Drilling of various holes on stainless steel panels and fixing of glands for power and control cabling
• Fabrication and construction of support/complete wiring of Reciprocating pump starter panel.
• Fabrication and construction of support/complete wiring of Transfer pump starter panel.
Agip oil Company Ltd
• Fabrication and construction /complete wiring of One number 800kw low voltage power distribution centre with UPS
• Fabrication and construction /complete wiring of One number 200kw low voltage power distribution centre for ITD
• Fabrication and construction /complete wiring of two numbers 500kw package substations for training School Building
• Fabrication and construction /complete wiring of two numbers 500kw High Voltage&Low voltage isolators for Tebidaba ESP
• Fabrication and construction /complete wiring of Instruments and Control Panels for the Oshie Flow Station Turbo-Gas
Compressor Plant A, B, C.
• Fabrication&construct/complete wiring of Auxiliary Power Panels for Oshie Flow Station Tubo-Gas Compressor Plant A, B, C.
• Fabrication and construction /complete wiring of three Numbers 200kw booster pump starter panel for CloughCreek FS
• Fabrication and construction /complete wiring of three Numbers 200kw booster pump starter panel for Obama FS
• Fabrication and construction /complete wiring of three Numbers 200kw booster pump starter panel for Idu Flow Station.
• Fabrication and construction /complete wiring of One num. low voltage neutral Contactor Panel for Tebidaba Power Station
• Fabrication and construction /complete wiring of Test Station Panels for Cathodic Protection for Ogbaimbiri Flow Station
• Fabrication & construction /complete wiring of Earth Well Electrode Pipes for Brass Terminal Earthing&Lightning Protection.
• Fabrication and construction /complete wiring of One num. 400kw LV power distribution centre for CloughCreek Residential

4. ABALAKA DANIEL
PROJECT MANAGER
ANNAJI RAO
INSTRU.& CONTROL SUPERINT.
EMMA JACKSON NSO
COMMUNITY LIAISON
TONYE PEPPLE
OHSES SUPERINT.
CHUKWUEMEKA OKAFOR
ABALAKA F.S
HV / MV / LV SUPERINT.
AGBOOLA NIYI/
CHIDI ROY
ELECTRICAL COORDNATOR
TIJANI SALIFU
SAFETY COORDINATOR
PATRICK EZE & GIFT NWATA
QUALITY COORDINATOR &
DOC. CONTROLLER E&I
EMMA FRIDAY WILLIAM
COMMUNITY LIAISON
COORDINATOR
BELLO S. ADEJARI
INSTRU. & CONTROL
COORDINATOR
INSTRUMENT TECHNICIAN
(GENERAL FIELD INSTALLATION
CABLES, EQUIP. & PANELS,
GLANDING, TERMINATION &
SPLICING)
INSTRUMENT
TECHNICIAN
(INSTRUMENT / TRAY &
CONDUIT FITTER /
FAB TEAM
ELECTRICAL TECHNICIAN
(LOOP CHECK/HIPOT – TEST)
INSTALLATION CHECK /
RESISTANCE TEST/POWER PANEL
RELAY TEST / CALIBRATION
COMMISSIONING TEAM
ELECTRICAL
TECHNICIAN
(ELECTRICAL TRAY &
CONDUIT FITTER &
FAB TEAM
INSTRUMENT TECHNICIAN
(LOOP CHECK / TEST)
INSTRUMENTATION PANEL RELAY
TEST/CALIBRATION &
COMMISSIONING TEAM
ELECTRICAL TECHNICIAN
(GENERAL FIELD INSTALLATION
CABLES, EQUIP. & PANELS,
GLANDING, TERMINATION &
SPLICING, GROUNDING &
CATHODIC PROTECTION
SYSTEM
ELECTRICAL INSTRUMENTATION AND CONTROL ORGANOGRAM

5. KOJIS MULTI-TEST SETS (ASSORTED)

6. LIST OF GENERAL TEST. EQUIPMENTS
S/NO DESCRIPTION TAG NO. QTY CERT
1 ANALOGUE MULTIMETER KGS 1000 – 4 4 OK
2 LOW DC-HIGH VOLTAGE/CONTINUITY TESTER WITH LIGHT INDICATOR KGS 1005 – 10 6 OK
3 ANALOGUE CLAMP – ON MULTIMETER KGS 1011-13 3 OK
4 DIGITAL CLAMP – ON MULTIMETER KGS 1014-17 4 OK
5 PORTABLE – DURABLE DIGITAL MULTIMETER KGS 1018-23 6 OK
6 3 – PHASE LOOP & PHASE SEQUENCE METER KGS 1026 3 OK
7 PHASE/NEUTRAL – EARTH LOOP METER KGS 1028 2 OK
8 TRUE - R. M. S. MULTIMETER FLUKE – 89 MODEL KGS 1026 – 32 4 OK
9 DIFFERENTIAL – CURRENT METER KGS 1033 – 34 2 OK
10 INSULATION / MEGGER METER, 5 KV KGS 1035 - 37 3 OK
11 H. V. INSULATION METER (DIGITAL), 10KVDC KGS1038A – 38D 4 OK
12 B. S. STANDARD, TORQUE WRENCH 100KGF KGS1040 – 41 2 OK
13 TRUE – R.M.S. MULTIMETER, FLUKE 87 IVSERIES KGS 1042-45 4 OK
14 DI-ELECTRIC METER (MINERAL OIL TESTERS) KGS1046-47 2 OK
15 SPIKE METER (VOLTAGE/CURRENT) DETECTOR KGS048-49 2 OK
16 G. P. S. SPECIAL INSTRUMENT KGS1050-51 2 OK
17 1 & 3-PHASE SECONDARY INJECTION METER KGS1052-53 2 OK
18 DIGITAL CABLE FAULT LOCATOR, RANGE 200KM/100KM WITH MURRAY KGS1045A/1054B 6 OK
19 25KVDC H.V. INSULATION METER KGS1055 3 OK
20 80KVDC H.V. TEST SET (HIPOTRONICS) KGS1056 3 OK
21 SYNCHRONOSCOPE KGS1057-58 2 OK
22 ENERPAC (PNEUMATIC & HYDRAULIC) MACHINE KGS1059-60 2 OK
23 DIAL GUAGE KGS1061-62 2 OK
24 CONTACT RESISTANCE TESTER 220VAC AUX. MICRO-OHM KGS 1063/1063B 2 OK
25 DIGITAL EARTH RESISTANCE TESTERS KGS 1064/1064B 2 OK
26 NEW MODEL FIELD PIECE MULTIMETER KGS 1065 1 OK
27 MURRAY LOOP BRIDGE TESTER ANALOGUE KGS1039A-1039B 2 OK
28 MURRAY LOOP BRIDGE TESTER DIGITAL KGS1066A-1066B 2 OK
29 THREE PHASE DIGITAL INJECTION METER KGS1067 1 OK
30 HEAVY DUTY HV CABLE FAULT TRACER SET KGS1068 1 OK

7. DATE CLIENT LPO NO SUPPLY / SERVICES/ACTIVITIES DESCRIPTION STATUS AMT ($)
2014
MOBIL PRODUCING NIG UNLTD
QGFE PROJECT(STAGE1)
SUB-CONTRACT
INTERGRITY TESTS / CHECKS ON MCC L.V. POWER CABLE
4X240SQMM FOR GTG8302 26MVA & FAULT TRACING /
IDENTIFICATION + RECOMMENDATIONS REQUIRED
COMPLETED 90,000.00
2013
MOBIL PRODUCING NIGERIA
UNLTD (QUA
IBOE TERMINAL) FOR QGFE
PROJECT (STAGE ONE)
SUB-CONTRACT
INSULATION MAINTENANCE PROOF TEST (INITIAL HI-POT
TEST) OF MEDIUM VOLTAGE / XLPE, EPR 3X400SQMM
OKONITE POWER CABLES FOR THE 25MVA X 2 NUM TURBINE
GENERATORS; INSTALLATION / GLANDING OF 600V & 11KV
OKONITE POWER CABLES; INSTALLATION AND
COMMISSIONING OF H.V. SWITCHGEAR UNITS AS WELL AS
MODIFICATION OF EXISTING M.V. PANEL CABLE ENTRY
BASE PLATE TO ACCOMMODATE ADDITIONAL POWER
CABLES & EARTHING SYSTEM INTEGRATION, NEUTRAL
GROUND RESISTOR PANEL INSTALLATION / TESTS AT GTG
AREA; TERMINATION OF 11KV POWER CABLES 3X400 SQMM
XLPE OKONITE AT GTG AND EXISTING SWITCHGEAR ROOM
AREAS, POWER TRANSFORMER AREAS, HIPOTEST OF SAME
AND FINAL CONNECTION /INSTALLATION OF C.T. / COMM.
INSTALLATION AND TESTING / COMMISSIONING OF ALL
LOW VOLTAGE POWER CABLES IN THE PLANT.
COMPLETED 480,000.00
2008
MOBIL PRODUCING
UNLTD(EKET QUA IBOE
TERMINAL)
SUB-CONTRACT
INSTALLATION OF 6KV BOOSTER PUMPS, TRANSFER PUMPS;
INSTALLATION AND COMMISSIONING OF H.V. SWITCHGEAR
& EARTHING SYSTEM, NEUTRAL GROUND RESISTOR PANEL;
SPLICING AND TERMINATION OF 11KV POWER CABLES,
HIPOTEST OF SAME AND FINAL INSTALLATION/
COMMISSIONING. INSTALLATION OF CATHODIC
PROTECTION SYSTEM FOR THE FIRE WATER TANK SYSTEM;
200KW AUTO PUMP START/STOP DESIGN, CONSTRUCTION
,INSTALLATION AND COMMISSIONING; SUBMARINE
SPLICING OF LOW VOLTAGE DOWN HOLE PUMPS POWER
CABLES
EXECUTED 450,000.00
KOJIS GLOBAL SERVICES NIGERIA LIMITED SOME EXECUTED JOBS IN MOBIL UNLTD FIELD

8. AGIP FIELD

9. KOJIS GLOBAL SERVICES NIGERIA LIMITED SOME EXECUTED JOBS IN AGIP FIELD
DATE CLIENT LPO NO SUPPLY / SERVICES/ACTIVITIES DESCRIPTION STATUS AMT ($)
2015 NAOC / AGIP GLOBAL MAINT.
GLOBAL REWINDING OF ELECTRICAL MACHINES, MOTORS /
EQUIPMENTS IN POWER AND PROCESSING GAS PLANTS
COMPLETED 500,000.00
2012 -2014 NAOC/AGIP GLOBAL MAINT.
SUPPLY OF MATERIALS, CONSUMABLES AND MANPOWER FOR
GLOBAL MAINTENANCE OF HV. & LV SWITCHGEARS,
COMPRESSORS, PUMPS, FANS, INSTRUMENTS AND CONTROL
PANELS, 3X50SQMM, 3X70SQMM, 3X95SQMM CU INSULATED
PVC/SWA/PVC XLPE 33KV SUBMARINE HIGH VOLTAGE
CABLE@ ALL SWAMP AREA OPERATIONS
COMPLETED 1,500,000.00
2012 -2014 NAOC/AGIP GLOBAL MAINT.
SUPPLY OF MATERIALS, CONSUMABLES AND MANPOWER FOR
GLOBAL MAINTENANCE OF HV. & LV SWITCHGEARS,
COMPRESSORS, PUMPS, FANS, INSTRUMENTS AND CONTROL
PANELS, 3X50SQMM, 3X70SQMM, 3X95SQMM CU INSULATED
PVC/SWA/PVC XLPE 33KV SUBMARINE HIGH VOLTAGE
CABLE@ ALL LAND AREA OPERATIONS
COMPLETED 1,000,000.00
2011 NAOC/AGIP
INSTALLATION AND COMMISSIONING OF GROUNDING AND
LIGHTNING PROTECTION SYSTEM FOR BRASS TANK FARM AND
EXPORT TERMINAL.
COMPLETED 160,000.00
2011 NAOC/AGIP REVAMPING OF OSHIE TUBOR-GAS COMPRESSOR A, B, C. COMPLETED 450,000.00
2011 NAOC/AGIP
CONSTRUCTION, INSTALLATION AND COMMISSIONING OF
2NUM. 500KW PACKAGE SUBSTATION FOR NAOC/AGIP
TRAINING SCHOOL BUILDING IN PORT HARCOURT BASE
COMPLETED 280,000.00
2010 NAOC/AGIP
CONSTRUCTION, INSTALLATION AND COMMISSIONING OF
800KW LOW VOLTAGE DISTRIBUTION CENTRE FOR NAOC/AGIP
OB/OB RESIDENTIAL NEW BASE.
COMPLETED 450,000.00
2010 NAOC / AGIP 4500023941/000
ENITO II COMMUNITY ELECTRIFICATION UPGRADE
INCLUDING SUPPLY OF POWER GENERATING SET
150KVA;400VAC 3PH+N
COMPLETED 450,000.00
2010 NAOC / AGIP 4500023479/000 LAYING OF POWER CABLE AT CLOUGH CREEK FLOW STATION. COMPLETED 650,000.00
2009 NAOC / AGIP 4500021445/000
WITHDRAWAL, REPAIR, LAYING, BACKFILLING AND TESTING
OF TEBIDABA WELLS 2, 10 AND 13 ESP POWER CABLES
EXECUTED 250,000.00
2009 NAOC / AGIP 3500012118/000
SUPPLY OF BARE ALUMINIUM CONDUCTOR AND POWER
TRANSFORMERS
EXECUTED 400,000.00
2008 NAOC / AGIP 4500014089/000
CONSTRUCTION OF PANELS AND ISOLATOR FOR ESP WELLS AT
TEBIDABA FLOW STATION
EXECUTED 127,000.00

10. TOTALFINAELF FIELD

11. 2008 TOTALFINAELF SUB CONTRACT
EDIKAN OFFSHORE PRODUCTION PLATFORM-WATER
REINJECTION PROJECT INSULATION MAINTENANCE
PROOF TEST OF MEDIUM VOLTAGE / XLPE, EPR
OKONITE POWER CABLES, INSTALLATION / GLANDING
OF 600V & 1KV OKONITE POWER CABLES;
INSTALLATION AND COMMISSIONING OF M.V.
SWITCHGEAR, POWER TRANSFORMER, VSD,
HIPOTEST OF SAME AND FINAL CONNECTION /
INSTALLATION OF C.T. & COMMISSIONING
EXECUTED 250,000.00
2005 TOTALFINAELF SUB CONTRACT
INSTALLATION OF HV POWER CABLES ON 10.7MVA
3NOS POWER GENERATION TURBINES; INSTALLATION
OF 11KV AND 33KV SWITCHGEARS; SECONDARY
INJECTION TEST AND COMMISSIONING OF THE H.V.
PANELS. INSTALLATION AND COMMISSIONING OF
NEUTRAL GROUND RESISTOR PANELS AT OGP.
EXECUTED 270,000.00
INSTALLATION OF CABLE TRAYS FOR BOTH
INSTRUMENTS / CONTROL AND POWER CABLES
2004 TOTALFINAELF SUB CONTRACT
TESTING EQUIPMENTS AND SERVICES HIRING –
SECONDARY INJECTION TESTER, HIPOTRONICS, LOOP
TESTER, MINERAL OIL TESTER 0-70KVDC
EXECUTED 200,000.00
2003 TOTAL FINA ELF SUB CONTRACT
TRAY FABRICATION FOR BOTH INSTRUMENTS AND
POWER CABLES IN OBITE GAS PLANT (OGP)
EXECUTED 90,000.00
POWER TURBINE FOUNDATION GROUNDING
KOJIS GLOBAL SERVICES NIGERIA LIMITED SOME EXECUTED JOBS IN TOTALFINAELF LTD FIELD

12. NOTORE FIELD

13. DATE CLIENT LPO NO
SUPPLY / SERVICES/ACTIVITIES
DESCRIPTION
STATUS AMT ($)
2008
NOTORE CHEMICAL INDUSTRIES,
ONNE
CALL=OFF
General earthing of the entire 6,600vac power generation
house. Testing earth resistance value and commissioning.
EXECUTED 80,000.00
2008
NOTORE CHEMICAL INDUSTRIES,
ONNE
CALL=OFF
Cold test on all the residential estate buildings wiring and
earthing + voltage operated earth leakage circuit breaker
trip sensual test. Identification of faulty circuits and fault
clearing. Trouble shooting in the main plant laboratory
power panel/distribution to sub/final circuit & fault
clearing.
EXECUTED 95,000.00
2008
NOTORE CHEMICAL INDUSTRIES,
ONNE
CALL=OFF
Di-electric strength test on all transformer oil and
certifications in the living estate.
EXECUTED 70,000.00
2008
NOTORE CHEMICAL INDUSTRIES,
ONNE
CALL=OFF
Hipotential test on all the power distribution feeders,
identifying faulty lines and fault clearing.
EXECUTED 80,000.00
2008
NOTORE CHEMICAL INDUSTRIES,
ONNE
CALL=OFF
Servicing of all the elastimould terminations on both
switchgears and power transformers with earthing points.
EXECUTED 129,000.00
2008
NOTORE CHEMICAL INDUSTRIES,
ONNE
CALL=OFF
Insulation test on all the existing low voltage lines from
vault to individual utility buildings & power cables
recovery. General commissioning test on the Plant Main
Admin Building Power Panel and Cables
EXECUTED 85,000.00
2008
NOTORE CHEMICAL INDUSTRIES,
ONNE
CALL=OFF
Supply of 11,000vac transformer oil.Casting of
transformer Phlinth, Construction of Drains and Culverts
EXECUTED 170,000.00
KOJIS GLOBAL SERVICES NIGERIA LIMITED SOME EXECUTED JOBS IN NOTORE LTD FIELD

14. SCOPE OF PRESENTATION:
ELECTRICAL / INSTRUMENTATION PLANT
• FIELD INSTALLATION
• FIELD CONSTRUCTION
• PRELIMINARY FIELD INSPECTION CHECKS / TEST
• PRE-COMMISSIONING
• COMMISSIONING
• START -UP
• MAINTENANCE
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15. GENERAL FIELD HANDLING OF
1. Extra low voltage Power and Control cables / Instruments
2. Low Voltage power and Control cables / Equipment / Panels / Transformers
3. Medium Voltage Power Cable & Equipment / Switchgears / Facility -
Transformers
4. High Voltage Power Cables and Gadgets / Switchgears / Facility –
Transformers
5. Uninterruptible Power Supply System (UPS) Back up for Industrial Plants
6. Cathodic Protection System (CPS) for Underground Facility /Structures /
Tanks / Platform
7. Grounding / Earthing and Lightning Protection System for Industrial plants
8. Instrumentation and Control System in Plants
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17. Dewatering system / Trenching / Slabbing /
Backfilling/ Pavements for Electrical Signal /
Instruments Circuit and Power Circuits in Plant
• Extra low voltage cables
• Low Voltage power cables
• Medium voltage power cable
• High voltage power cables
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18. DEWATERING SYSTEM / TRENCHING / SLABBING / BACKFILLING / PAVEMENTS
FOR ELECTRICAL SIGNAL / INSTRUMENTS CIRCUIT AND POWER CIRCUITS IN PLANT

19. INSTALLATION OF CABLES IN GENERAL:
PLANT LAYOUT INCLUDING CONFINED
SPACE AND CLASSIFIED ZONES
• Extra low voltage cables
• Low Voltage power cables
• Medium voltage power cable
• High voltage power cables
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21. CONDUITING / GLANDING & Use of Sealants such as:
foam compound, silicon sealant, Epoxy, Bituminous
compound for:
• Extra low voltage cables
• Low Voltage power cables
• Medium voltage power cable
• High voltage power cables
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22. CONDUIT / GLANDING AND USE OF SEALANTS SUCH AS:
FOAM COMPOUND, SILICON SEALANT, EXPOXY, BITUMINOUS COMPOUND

23. CABLE TAGGING AND SCHEDULING
• Interpretation of single line diagram for general cable configuration
• Labeling of general cable circuitry in Plants.
• Identification of general cable circuitry in Plants.
• Identification of termination points on switchgears and or Equipment
• Identification and tagging of splice points of cables in Plants
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24. CABLE TAGGING AND SCHEDULING

25. INSTALLATION OF EQUIPMENT / FACILITIES
IN GENERAL PLANT LAYOUT
• Extra low voltage Instruments
• Low Voltage power equipment / panels / Facility
• Medium / High voltage equipment / Facility
• Transformers/ Pumps/ Compressors / Motors/ HVAC
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26. Preliminary Tests / Inspection Checks
on the following:
• Extra low voltage cables and Instruments
• Low Voltage power cables and equipment / panels
• Medium voltage power cable and equipment / Panels
• High voltage power cables and Gadgets / Switchgear
• Plant facilities:Transformers,Motors,Compressors,HVAC
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27. PRELIMINARY TEST / INSPECTION CHECKS

28. Integrity Tests / Inspection Checks Prior to
Installation and Commissioning Exercise on the
Following:
Company check list and serial proof test shall be carried out on the following
in accordance with the Company laid down procedures / rules thus:
• Extra low voltage Power and Control cables / Instruments
• Low Voltage power and Control cables / Equipment / Panels
• Medium Voltage Power Cable & Equipment / Switchgears / Facility
• High Voltage Power Cables and Gadgets / Switchgears / Facility
• Transformers/ Pumps / Motors / Compressors / HVAC
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29. INTEGRITY TESTS / INSPECTION CHECKS PRIOER TO
INSTALLATION AND COMMISSIONING EXERCISE

30. GROUNDING AND LIGHTING PROTECTION SYSTEM

31. Cathodic Protection System (CPS)
• CPS for submerged & Surface steel structures – Pipe lines, StorageTanks, Platforms
• Sacrificial & Impressed Current System
• Sacrificial anode selectivity / statistics in accordance with the number of years expected for
the facility to be protected
• Transformer Rectifier system installation / Solar Power system with Batteries & inverter
• Establishment of Test Points or Stations.
• Techniques employed to achieve good connection bonding of cathodic circuit with the
prospective facility to be protected.
• Protection of bonding point / area
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32. CATHODIC PROTECTION SYSTEM

33. Case studies of some problems encountered during installation,
Test, Commissioning & Maintenance of Electrical /Instruments/
Grounding Protection Circuitry
• Flash overs at terminal / lug points
• Burn outs at spliced points on surface installation in trays and conduits
• Burn outs at termination and splice point on down hole pump circuitry
• Short circuiting due to water / chemical ingress at joints and terminal points
• Short circuiting due to plant inherent activities
• Short circuiting due to interference by rodents, reptiles, birds, shrubs / trees and natural wind
• Short circuiting due to poor administering of workmanship and or technical know-how.
• Failure due to non compliance strictly to the plant design and minimum project requirements
• Potential shock risk during test / commissioning due to poor earthing / ground protection system
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34. • Damages to Cable, Facilities due to spontaneous electromagnetic waves
• Damages to cable , Facilities due to very high level of electrostatic charges resultant from lightning and surges
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35. CASE STUDIES O SOME PROBLEMS ENCOUNTERED IN PLANT DURING
INSTALLATION AND MAINTENANCE

36. Resolution on each of the Case studies of some problems encountered during
installation, Test, Commissioning & Maintenance of Electrical /Instruments/ Grounding
Protection Circuitry
• The case of short circuit caused by rodents and reptiles, birds, natural wind were drastically reduced by sealing properly all entrance holes of cable
underneath panels, switch boards. Proximal tress/shrubs were cut off while wind breakers were installed strategically.
• Flash overs at terminal / lug points were curtailed using shielding tapes called semi-conducting tape. Cleanliness was encouraged.
• Burn outs at spliced points on surface installation in trays & conduits was curtailed by using specified cable sizes&conduit size correspondence
• Burn outs at termination and splice point on downhole pump circuitry was resolved by application of mastic sealing bituminous tape
• Short circuiting due to water / chemical ingress at joints and terminal points was resolved using same mastic bituminous tape
• Short circuiting due to plant inherent activities was minimized drastically using proper and adequate sign post for some busy locations
• Short circuiting due to poor administering of workmanship and or technical know-how was solved using experienced and qualified person
• Failure due to non compliance strictly to the plant design and minimum project requirements was resolved by referencing drawings before installation, test
and commissioning
• Potential shock risk during test / commissioning due to poor earthing / ground protection system was resolved by initially make sure that the Ground pit
electrode were tested continually to make sure that the total resistance remains as low as possible.
• Damages to Cable, Facilities due to spontaneous electromagnetic waves was eliminated following up the dedicated plant design as well as segregation of
cables
• Damages to cable , Facilities due to very high level of electrostatic charges resultant from lightning and surges was resolved by making solid bonding
between the cables armour, Facility chassis and general earth pit
• usage of neutral grease to lubricate switch and engagement points of switchgears system both for the low voltage and high voltage operated system.
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37. Safety on Electrical Activities
• Electrical lines/equipment (no matter how low the voltage) shall be de-energized prior to work/repairs being performed.
• Only qualified electrical technicians when authorized by site management shall perform special “HOT WORK”.
• Field repairs or tampering with any electrical equipment by unauthrozied persons not permitted
• High voltage electrical equipment shall be properly protected and identified by tags etc.
• All electrical cords, equipment is to be visually checked by the user daily or before use.
• Temporary electrical cords and cables shall be covered or elevated to protect them from being damaged by personnel or
equipment and to eliminate tripping hazards.
• When performing maintenance on electrical systems, lockouts and tag outs must be used
• No electrical tool or equipment is to be used unless it is in proper operating condition
• Cord sets must be free of splices and have an adequate ground conductor.
• All electrical equipment is to be formally inspected every 90 days with written document.
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38. • Motor control boxes and disconnect switch handles should be checked with the back of the hand
before grasping.
• Keep adequate clearance between electrical lines and object being moved or handled.
• All portable electrical tools/equipment shall be three wires grounding type and protected by earth
leakage circuit breaker, assured ground system, or double insulated
• Never break in to concrete when digging or excavating unless approved by authorized personnel.
Some but not all electrical conduits are covered with coloured (red) concrete as a warning that
electrical lines are in the area.
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39. PROFESSIONAL RECOGNITIONS

40. PROFESSIONAL RECOGNITIONS