EPC/EPCm Model-Driven PEP Flowchart

EPC/EPCm Scope of Supply – Model Driven PEP

Lump-Sum Turn Key Execution

%%{init: {'theme': 'base', 'themeVariables': { 'fontSize': '14px'}} }%% graph TD %% === NODES === A[Feasibility
Analysis]:::phase B[Basic Engineering
Initial Estimate
Plant Design]:::eng C[Detail Engineering
Core Design & Analysis]:::eng D[Detail Checking
25% / 50% / 90% Model Review]:::check E[Procurement
Piping Deliverables]:::proc F[Detailing
AFC Drawings
Fabrication Details]:::detail G[Construction
Fabrication & Erection]:::const H[Commissioning
Punch List
As-Builts]:::comm I[Close-Out
Client Documentation]:::close %% === MILESTONES === M1[Model Setup]:::milestone M2[FEED Complete]:::milestone M3[Design Close-Out]:::milestone M4[SKID Vendor
Mobilisation]:::milestone M5[Client
Documentation]:::milestone M6[As-Builts
Handover]:::milestone %% === CONNECTIONS === A --> M1 --> B B --> M2 --> C C --> D D -->|25% Review| C D -->|50% Review| C D -->|90% Review| E E --> F F -->|AFC Issued| G G --> M3 G --> M4 G --> H H --> M5 H --> M6 --> I %% === WORKSTREAMS (Parallel) === subgraph Process_OS ["Process, OS & Operation"] direction TB P1[Process Design] --> P2[Operating Philosophy] end subgraph Design ["Process & Design"] direction TB D1[Conceptual Design] --> D2[3D Model Start] end subgraph Designers ["Designers & Fabricators"] direction TB DF1[Detail Design] --> DF2[Shop Drawings] end subgraph Procurement ["Procurement & QA/QC"] direction TB PR1[Requisitions] --> PR2[Vendor Data] end subgraph Construction ["Construction & QA/QC"] direction TB CO1[Site Mobilization] --> CO2[Mechanical Completion] end %% Link workstreams to main flow B --> Process_OS C --> Design D --> Designers E --> Procurement G --> Construction %% === RESOURCE CURVES (Bottom) === subgraph Resources ["Resource Commitment"] direction LR R1[Engineering
Peak Early]:::curve R2[Designers
Mid-Project]:::curve R3[Detailers
Detailing Phase]:::curve R4[Quality Control
Construction & Close]:::curve end A --> Resources %% === STYLING === classDef phase fill:#e3f2fd,stroke:#1a5fb4,stroke-width:2px,color:#000; classDef eng fill:#c8e6c9,stroke:#2e7d32,stroke-width:2px,color:#000; classDef check fill:#f8bbd0,stroke:#c2185b,stroke-width:2px,color:#000; classDef proc fill:#fff9c4,stroke:#f57f17,stroke-width:2px,color:#000; classDef detail fill:#d1c4e9,stroke:#6a1b9a,stroke-width:2px,color:#000; classDef const fill:#ffe0b2,stroke:#ef6c00,stroke-width:2px,color:#000; classDef comm fill:#b2dfdb,stroke:#00695c,stroke-width:2px,color:#000; classDef close fill:#ffcdd2,stroke:#c62828,stroke-width:2px,color:#000; classDef milestone fill:#ffeb3b,stroke:#f57f17,stroke-dasharray: 5 5,stroke-width:3px,color:#000,font-weight:bold; classDef curve fill:#bbdefb,stroke:#1976d2,stroke-width:1px,color:#000,font-size:11px;

Feasibility

Basic/Detail Eng

Model Review

Procurement

Detailing

Construction

Commissioning

Milestone