This document contains a work breakdown structure (WBS) for upstream oil and gas projects such as wellhead platforms, riser platforms, FPSOs, FLNGs, and subsea facilities. It details the levels, categories, and subcategories of work involved in engineering, procurement, fabrication/construction, and testing/commissioning of such projects. The WBS covers areas like specifications, calculations, drawings, procurement, yard work, structural steel, piping, electrical systems, instrumentation, telecommunications, civil works, and commissioning of completed systems.

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LEVEL 5 LEVEL 6
UPSTREAM WBS EXAMPLE < WELL HEAD PLATFORM,RISER PLATFORM,FPSO,FLNG,SUBSEA FACITIY >
ENGINEERING
1.2.1 GENERAL
1.2.1.1 SPECIFICATION/ PROCEDURES / REPORTS
1.2.1.2 CALCULATIONS
1.2.1.3 DATA SHEETS
1.2.1.4 DRAWINGS
1.2.1.5 MATERIAL REQUISITIONS
1.2.1.6 TECHNICAL BID EVALUATION (TBE)
1.2.1.7 VENDOR DOCUMENTS
1.2.2 PROCESS
1.2.2.1 SPECIFICATION/ PROCEDURES / REPORTS
1.2.2.2 CALCULATIONS
1.2.2.3 DATA SHEETS
1.2.2.4 DRAWINGS
1.2.2.5 MATERIAL REQUISITIONS
1.2.2.6 TECHNICAL BID EVALUATION (TBE)
1.2.2.7 VENDOR DOCUMENTS
1.2.2.8 HAZOP REVIEW
1.2.3 STRUCTURAL
1.2.3.1 SPECIFICATION/ PROCEDURES / REPORTS
1.2.3.2 CALCULATIONS
1.2.3.3 DATA SHEETS
1.2.3.4 DRAWINGS
1.2.3.5 MATERIAL REQUISITIONS
1.2.3.6 TECHNICAL BID EVALUATION (TBE)
1.2.3.7 VENDOR DOCUMENTS
1.2.4 MECHANICAL
1.2.4.1 SPECIFICATION/ PROCEDURES / REPORTS
1.2.4.2 CALCULATIONS
1.2.4.3 DATA SHEETS
1.2.4.4 DRAWINGS
1.2.4.5 MATERIAL REQUISITIONS
1.2.4.6 TECHNICAL BID EVALUATION (TBE)
1.2.4.7 VENDOR DOCUMENTS
1.2.5 PIPING
1.2.5.1 SPECIFICATION/ PROCEDURES / REPORTS
1.2.5.2 MODELLING AND MODEL REVIEW
1.2.5.3 CALCULATIONS
1.2.5.4 DATA SHEETS
1.2.5.5 DRAWINGS
1.2.5.6 MATERIAL REQUISITIONS
1.2.5.7 TECHNICAL BID EVALUATION (TBE)
1.2.5.8 VENDOR DOCUMENTS
1.2.5.9 MTO
1.2.6 ELECTRICAL
1.2.6.1 SPECIFICATION/ PROCEDURES / REPORTS
1.2.6.2 CALCULATIONS
1.2.6.3 DATA SHEETS
1.2.6.4 DRAWINGS
1.2.6.5 MATERIAL REQUISITIONS
1.2.6.6 TECHNICAL BID EVALUATION (TBE)
1.2.6.7 VENDOR DOCUMENTS
1.2.7 INSTRUMENT AND TELECOMMUNICATION
1.2.7.1 SPECIFICATION/ PROCEDURES / REPORTS
1.2.7.2 CALCULATIONS
1.2.7.3 DATA SHEETS
1.2.7.4 DRAWINGS
1.2.7.5 MATERIAL REQUISITIONS
1.2.7.6 TECHNICAL BID EVALUATION (TBE)
1.2.7.7 VENDOR DOCUMENTS
1.2.8 CIVIL
1.2.8.1 SPECIFICATION/ PROCEDURES / REPORTS
1.2.8.2 CALCULATIONS
1.2.8.3 DATA SHEETS
1.2.8.4 DRAWINGS
1.2.8.5 MATERIAL REQUISITIONS
1.2.8.6 TECHNICAL BID EVALUATION (TBE)
1.2.8.7 VENDOR DOCUMENTS
1.2.9 PIPELINES
1.2.9.1 SPECIFICATION/ PROCEDURES / REPORTS
1.2.9.2 CALCULATIONS
1.2.9.3 DATA SHEETS
1.2.9.4 DRAWINGS
1.2.9.5 MATERIAL REQUISITIONS
1.2.9.6 TECHNICAL BID EVALUATION (TBE)
1.2.9.7 VENDOR DOCUMENTS
1.2.10 ARCHITECTURE
1.2.1O.1 SPECIFICATION/ PROCEDURES / REPORTS
1.2.1O.2 CALCULATIONS
1.2.1O.3 DATA SHEETS
1.2.1O.4 DRAWINGS
1.2.1O.5 MATERIAL REQUISITIONS
1.2.1O.6 TECHNICAL BID EVALUATION (TBE)
1.2.1O.7 VENDOR DOCUMENTS
1.2.11 HSE (FIRE AND SAFETY)
1.2.12 FINAL DOCUMENTATION
1.2.13 OTHERS
LEVEL 1 LEVEL 2 LEVEL 3 LEVEL 4
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2. LEVEL 5 LEVEL 6LEVEL 1 LEVEL 2 LEVEL 3 LEVEL 4
1.3 PROCUREMENT
1.3.1 MECHANICAL
MECHANICAL EQUIPMENT
1.3.1.1 COLUMN, VESSELS, DRUMS
1.3.1.2 HEAT EXCHANGER, CONDENSER
1.3.1.3 BOILER, HEATER & FURNACES
1.3.1.4 TANKS
1.3.1.5 GAS TURBINE DRIVEN BOOSTER COMPRESSOR
1.3.1.6 OTHER COMPRESSORS, FAN AND BLOWERS
1.3.1.7 PUMPS
1.3.1.8 FILTER/ COALESCER
1.3.1.9 PIG LAUNCHER/RECEIVER
1.3.1.10 HOIST /CRANE
1.3.1.11 OTHER MECHANICAL EQUIPMENT
MECHANICAL PACKAGE
1.3.1.12 FLARE PACKAGE
1.3.1.13 NITROGEN PACKAGE
1.3.1.14 CHEMICAL INJECTION PACKAGE
1.3.1.15 MEG REGENERATION PACKAGE
1.3.1.16 ACID GAS REMOVAL UNIIT
1.3.1.17 GAS TURBINE GENERATOR
1.3.1.18 MICRO TURBINE GENERATOR
1.3.1.19 EFFLUENT TREATMENT PACKAGE
1.3.1.20 DEHYDRATION PACKAGE
1.3.1.21 WATER TREATMENT PACKAGE
1.3.1.22 HVAC EQUIPMENT PACKAGE
1.3.1.23 CONDENSATE DESALTER
1.3.1.24 SULPHUR RECOVERY PACKAGE
1.3.1.25 OTHER PACKAGE EQUIPMENT
1.3.2 PIPING AND VALVES
1.3.2.1 PIPES
1.3.2.2 FITTING & FLANGES
1.3.2.3 BALL VALVE
1.3.2.4 BUTTERFLY VALVE
1.3.2.5 CHECK VALVE
1.3.2.6 CHOKE VALVE
1.3.2.7 GATE VALVE
1.3.2.8 OTHER MANUAL VALVES
1.3.2.9 PIPE SUPPORT
1.3.2.10 OTHER PIPING MATERIALS
1.3.3 ELECTRICAL
1.3.3.1 HV, MV & LV Switchgears
1.3.3.2 Power Transformers
1.3.3.3 Distribution Board
1.3.3.4 MCC
1.3.3.5 Cabling System
1.3.3.6 Lighting System
1.3.3.7 Grounding System
1.3.3.8 Cathodic Protection
1.3.3.9 Batteries
1.3.3.10 Electrical Motors
1.3.3.11 Electrical Generators
1.3.3.12 Electrical Bulk Material
1.3.3.13 Other Electrical Equipment
1.3.4 INSTRUMENT
1.3.4.1 GAUGES
1.3.4.2 CONTROL VALVE
1.3.4.3 OTHER ACTUATED VALVES
1.3.4.4 GAS & CONDENSATE METERING SYSTEM
1.3.4.5 WELL HEAD CONTROL PANEL
1.3.4.6 MULTIPHASE FLOW METER
1.3.4.7 FIELD INSTRUMENTS & TUBING
1.3.4.8 SHUTDOWN SYSTEM
1.3.4.9 CONTROL SYSTEM
1.3.4.10 TELEMETRY SYSTEM
1.3.4.11 DCS & SCADA SYSTEM
1.3.4.12 CABLING SYSTEM (INCL. FIBER OPTIC)
1.3.4.13 TRANSMITTERS
1.3.4.14 INSTRUMENT BULK MATERIAL
1.3.4.15 OTHER INSTRUMENT EQUIPMENT
1.3.5 TELECOMMUNICATION
1.3.5.1 TELEPHONE & FAX SYSTEM
1.3.5.2 RADIO & RADAR SYSTEM
1.3.5.3 SATELLITE SYSTEM
1.3.5.4 PUBLIC ADDRESS, SIGNALING, ALARM & SECURITY SYSTEM
1.3.5.5 CABLING SYSTEM
1.3.5.6 OTHER TELECOMM. EQUIPMENT
1.3.6 SUBSEA
1.3.6.1 CHRISTMAS TREE
1.3.6.2 MANIFOLD / PLEM
1.3.6.3 UMBILICAL SYSTEM
1.3.6.4 HFL SYSTEM
1.3.6.5 EFL SYSTEM
1.3.6.6 OTHER MECHANICAL EQUIPMENT
1.3.6.7 OTHER E&I EQUIPMENT
1.3.7 CIVIL
1.3.7.1 BUILDING MATERIALS
1.3.7.2 PILING / FOUNDATION MATERIALS
1.3.7.3 OTHER CIVIL BULK MATERIALS
1.3.8 STRUCTURAL STEEL
1.3.8.1 STRUCTURAL BEAM
1.3.8.2 STRUCTURAL PLATE
1.3.8.3 STRUCTURAL TUBULAR
1.3.8.4 OTHER STEEL STRUCTURE MATERIALS
1.3.9 PAINTING AND COATING
1.3.9.1 PAINT AND COATING
1.3.9.2 OTHER COATIG MATERIAL
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3. LEVEL 5 LEVEL 6LEVEL 1 LEVEL 2 LEVEL 3 LEVEL 4
1.4
FABRICATION /
CONSTRUCTION
1.4.1 FRONT END ACTIVITIES /MOBILIZATION
1.1.1.1 YARD PREPARATIONS (OFFICE,AMENITIES, ETC)
1.1.1.2 FABRICATION OF FRAMING/SUPPORT FOUNDATION
1.1.1.3 MOBILIZATION OF PROJECT MANAGEMENT TEAM
1.1.1.4 MOBILIZATION OF PROJECT MANAGEMENT TEAM
1.1.1.5 MOBILIZATION OF NDT SOURCE INSPECTION
1.1.1.6 MOBILIZATION OF STRUCTURAL SUB-CONTRACTOR
1.1.1.7 MOBILIZATION OF PIPING/PLUMBING SUB-CONTRACTOR
1.1.1.8 MOBILIZATION OF PIPING/PLUMBING SUB-CONTRACTOR
1.1.1.9 MOBILIZATION OF PAINTING SUB-CONTRACTOR
1.1.1.10 MOBILIZATION OF E&I SUB-CONTRACTOR
1.1.1.11 MOBILIZATION OF E&I HVAC/DUCTING SUB-CONTRACTOR
` 1.1.1.12 MOBILIZATION OF ARCHITECTURAL SUB-CONTRACTOR
1.1.1.13 PROJECT PLANNING AND MONITORING CHART
1.1.1.14
WQT/WPS (NUMBER OF WELDERS/WED(NUMBER OF WELDERS/WELDING
OPERATORS/WPS)
1.1.1.15 TEST PANEL/COATING SYSTEM QUALIFICATION TEST(NUMBER OF TEST PANELS)
1.4.2 PREPARATION
1.1.1.1 YARD PREPARATIONS (OFFICE,AMENITIES, ETC)
1.4.3 ENGINEERING (SHOP DRAWING)
1.4.3.1 GENERAL
1.4.3.2 STRUCTURAL
1.4.3.3 MECHANICAL
1.4.3.4 PIPING
1.4.3.5 ELECTRICAL
1.4.3.6 INSTRUMENT AND TELECOMMUNICATION
1.4.3.7 CIVIL
1.4.3.8 PIPELINES
1.4.3.9 ARCHITECTURE
1.4.3.10 HVAC / DUCTING
1.4.4 YARD PRELIMINARIES / FABRICATION / CONSTRUCTION
1.4.4.1 STRUCTURAL
FABRICATION OF STRUCTURAL MEMBERS
FABRICATION OF MEMBERS
ERECTION
TRIAL FIT/WEIGHING
OTHER STRUCTURAL WORK
1.4.4.2 MECHANICAL
MECHANICAL EQUIPMENT SUPPORT
MECHANICAL EQUIPMENT INSTALLATION
1.4.4.3 PIPING
PIPE SUPPORT FABRICATION
PIPE FABRICATION
PIPE SUPPORT INSTALLATION
LEAK TEST VALVE
VALVE INSTALLATON
FLUSHING, HYDROTEST AND ACID CLEANING
1.4.4.4 PIPELINE
PIPE COATING
PIPE FABRICATION
1.4.4.5 ELECTRICAL
FABRICATION OF ELECTRICAL SUPPORT
INSTALLATION OF ELECTRICAL SUPPORT
CABLE TRAY/CABLE LADDER INSTALLATION
CABLE PULLING
FIELD ELECTRICAL DEVICE INSTALLATION
ELECTRICAL EQUIPMENT INSTALLATION
CALIBRATE ELECTRICAL EQUIPMENT
DRESSING/GLANDING/TAGGING
1.4.4.6 INSTRUMENT AND TELECOMMUNICATION
FABRICATION O F INSTRUMENT SUPPORT
INSTRUMENT CABLE TRAY/LADDER/CONDUITS
INSTALLATION
INSTRUMENT CABLE PULLING
INSTRUMENT LIGHTING AND FIXTURES
INSTRUMENT EQUIPMENT INSTALLATION
INSTALLATION OF PIPE SUPPORT
INSTALLATION OF TUBING/AIR SUPPL
INSTRUMENT TUBING / LEAK TEST
TELEPHONE AND LAN INSTALLATION
CCTV
RADIO SYS
DRESSING / GLANDING / TAGGING/ TERMINATION
CALIBRATE INSTRUMENT
1.4.4.7 ARCHITECTURE
WALL PARTITION AND PANEL INSTALLATION
DOORS AND WINDOW
INSTALL FLOOR PEDESTAL
INSTALL HANGERS AND FALSE CEILING
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4. LEVEL 5 LEVEL 6LEVEL 1 LEVEL 2 LEVEL 3 LEVEL 4
1.4.4.8 HVAC / DUCTING
FABRICATION OF DUCTING SUPPORT
INSTALLATION OF DUCTING SUPPORT
HVAC DUCTING FABRICATION AND INSTALLATION
FABRICATION OF ELECTRICAL / INSTRUMENT
SUPPORT
INSTALLATION OF ELECTRICAL / INSTRUMENT
SUPPORT
TUBING TRAY/ CABLE TRAY/ LADDER
INSTALLATION
FIELD HVAC DEVICE INSTALLATION
HVAC EQUIPMENT INSTALLATION
CALIBRATE HVAC EQUIPMENT
DRESSING, GLANDING, TAGGING AND
TERMINATION
1.4.4.9 BLAST AND PAINTING
EQUIPMENT PAINTING
PIPE BLASTING AND PAINTING
1.4.4.10 INSULATION EQUIPMENT INSULATION
PIPE INSULATION
1.4.5 TESTING AND COMMISSIONING
1.4.5.1 ELECTRICAL *NUMBER OF SYSTEMS
1.4.5.2 INSTRUMENT AND COMMUNICATION *NUMBER OF SYSTEMS
1.4.5.3 PIPING AND PLUMBING *NUMBER OF SYSTEMS
1.4.5.4 PIPELINE *NUMBER OF SYSTEMS
1.4.5.5 MECHANICAL *NUMBER OF SYSTEMS
1.4.5.6 HVAC *NUMBER OF SYSTEMS
1.4.5.7 SYSTEM TESTING *NUMBER OF SYSTEMS
1.4.6 LOAD-OUT AND SEA FASTEING
1.4.6.1 DRAWINGS
1.4.6.2 MATERIALS
1.4.6.3 WEIGHING
1.4.6.4 SEA FASTENING FABRICAION
1.4.6.5 LOAD-OUT AND POSITIONING
1.4.6.6 TIE-DOWN ARRANGEMENT
1.4.7 FINAL DOCUMENTATION
1.4.7.1 QA/QC DOCUMENTS
1.4.7.2 EQUIPMENT DOSSIER
1.4.7.3 MATERIAL DOCUMENTS
1.4.7.4 TESTING AND PRE-COMMISSIONING DOCUMENTS
1.4.7.5 DESIGN DATA
1.4.7.6 AS-BUILT DRAWING
1.4.7.7 NDT RECORDS AND RADIOGRAPHS
1.5 INSTALLATION
1.5.1 PRE-INSTALL ENGINEERING AND PROCUREMENT
1.5.1.1 SHOP DRAWING
1.5.1.2 PROCEDURE
1.5.1.3 PROCUREMENT OF INSTALLATION MATERIALS
1.5.2 MARINE SPREAD MOBILIZATION
1.5.2.1 PREPARATION ACTIVITIES
1.5.2.2 MOBILIZATION OF BARGE AT YARD
1.5.3 TRANSPORTATION
1.5.3.1 SAIL AWAY AND ARRIVE AT SITE
1.5.4 INSTALLATION
1.5.4.1 PREPARATION ACTIVITIES
1.5.4.2 TOPSIDE INSTALLATION (TOPSIDE AS EX)
1.5.4.3 WELD AND NDT OF TOPSIDE
1.5.5 MARINE SPREAD DEMOB
1.5.5.1 DEMOB OF MARINE SPREAD
1.5.5.2 FINAL DOCUMENTATION

5. LEVEL 5 LEVEL 6LEVEL 1 LEVEL 2 LEVEL 3 LEVEL 4
1.6
HUC (HOOK-UP AND
COMMISSIONING)
1.6.1 COMMISSIONING ENGINERING
1.6.1.1 SHOP DRAWING
1.6.1.2 PROCEDURE
1.6.2 COMMISSIONING PROCUREMENT
1.6.2.1 PROCUREMENT FOR HUC MATERIALS
1.6.3 PRE-FABRICATION
1.6.3.1 PREPARATION ACTIVITIES
1.6.3.2 PRE-FABRICATION
1.6.4 OFSHORE-HUC
PREPARATION ACTIVITIES
MOBILIZATION OF WORK BOAT
SET-UP ANCHOR
FACILITIES HOOK-UP
POST-DRILLING HOOK-UP
FLOW LINE TIE-IN
REINSTATEMENT WORKS
HOST TIE-IN
COMMISSIONING SYSTEM #1
WORKBOAT DEMOB
FINAL DOCUMENTATION
ON-SHORE COMMISSIONING
COMMISSIONING OF SYSTEM #1
DEMOBILIZATION OF EQUIPMENT
FINAL DOCUMENTATION
PRE-SHUTDOWN ACTIVITIES
STRUCTURAL AND CIVIL
PIPING
PIPELINE
MECHANICAL
ELECTRICAL
INSTRUMENT AND COMMUNICATION
HVAC AND DUCTING
ARCHITECTURAL
BLAST AND PAINTING
SHUT-DOWN ACTIVITIES
STRUCTURAL AND CIVIL
PIPING
PIPELINE
MECHANICAL
ELECTRICAL
INSTRUMENT AND COMMUNICATION
HVAC AND DUCTING
ARCHITECTURAL
BLAST AND PAINTING
POST SHUT-DOWN ACTIVITIES