Successful systems integration is the integration of engineered systems to an integrated program to create a maintainable and operable system. It happens on a major infrastructure project when
all contractors and stakeholders work collaboratively to
create a system that can be operated and maintained
in all configuration states,
providing the functionality as intended,
with technical systems working in harmony.
These activities are done with the support of the stakeholders and contractors, but is executed by the Systems Integrator:
Design the configuration states required to bring the system as a whole into operational service.
Develop the systems architectures for each configuration state.
Outline the functionality required of each system for each configuration state.
Determine the effect that delays would have on overall system functionality if a subsystem is not ready for installation due to supplier issues, technology development challenges or construction challenges.
Determine how other interdependent configuration states will be effected by changes in program, technology, operational rules or maintenance procedures.
Interface management oversight
Integrated program development
Reporting to the sponsor and all contracting parties on design, construction, installation, assurance, testing and operational readiness status.
Develop the safety case and safety arguments to support configuration states and the final railway solution.
The systems integrator reports to the sponsor, who has the final responsibility for decisions relating to budget, program and scope changes.
The systems integrator deals with the effect of technical challenges. Program delays lead to technical challenges as the configuration states has to adjust, which involves difficult technical decisions. Operational and maintenance needs is realised by complex technical systems. For this reason, the integrator is a heavily technical organisation and should be lead by an individual with technical expertise.
The tools that are used to manage systems integration can include the integrated program, integration test plans, systems architectures, interface database, systems definitions and hazard logs.
The key to integration tools are the tools that enable the definition and planning for the states in which you wish to test your railway and bring your railway into service.