EPC and EPCM models allocate engineering, procurement and construction responsibilities differently. Defining scope and interfaces is essential to coordinate decisions, packages and handover criteria.
Clear responsibilities and interfaces
The choice of model considers design maturity, contracting strategy and the owner's coordination capabilities. Projects do not all require the same allocation of responsibilities.
Work starts by making boundaries, deliverables and approval mechanisms explicit. Technical integration and project monitoring proceed on this agreed basis.
Service scope
The scope is defined according to asset condition, project stage and available information.
EPC scope
This model integrates engineering, procurement and construction under the project's defined contractual conditions. Packages and interfaces are coordinated to meet delivery requirements.
Integrated scope definition
Supply and construction coordination
Verification of delivery requirements
Technical capabilities
A common basis for packages and contracts
Execution plan and interfaces
The plan connects engineering deliverables, supplies and construction work fronts. The responsibility matrix identifies who provides information, who reviews it and which decisions govern progress.
Packages and supply boundaries
Milestones and dependencies
Approval criteria
Controls and handover readiness
Reports must explain progress, constraints and changes against the baseline. Handover is organised around the actual status of systems and documentation, keeping outstanding items and their owners visible.
Scope and schedule monitoring
Change assessment
Technical and document close-out
Deliverables and coordination
Information for decision-making+
Deliverables are agreed when the service is defined. The bases used, results and outstanding checks are documented so that the information can carry through to the next stage.
Definition of packages and responsibilities
Execution plan and interface control
Progress, constraint and change reports
Background information to get started+
An initial review confirms what information is available and what needs to be completed. To prepare for that discussion, it is useful to have: