System Assurance is the process a project shall adhere to ensure that its goals are delivered safely and reliably as well as meet its objectives. This involve assuring the products and the systems used as well as assuring the process followed in the system development.
Delivery levels of Assurance
Assurance is provided at various levels
Assuring the products used in the project has been developed in accordance with applicable standards, proven legacy of maturity of application
For larger projects, system is divided into subsystems functionally. Each subsystem requires a degree of Assurance deepening on its safety criticality
System Assurance is about assuring the change introduced to the railway is integrated properly and any risk arising from interface hazards has been mitigated to ALARP.
We do system assurance through various stages as discussed below:
Concept Design Assurance
Assurance provided at the stage of concept design to demonstrate that the concept design is fit for purpose and any risk introduced has been mitigated to ALARP.
Design Compliance Assurance is the assurance submission at the detailed design stage to demonstrate that the same is fit for purpose and any risk introduced has been mitigated to ALARP.
Testing Assurance is the assurance submitted during the testing stage to demonstrate that the testing activities does not introduce any risk to the operational railway.
Commissioning Assurance is the assurance at the commissioning stage to demonstrate that the proposed system has an accepted design, passed the tests and is demonstrated to be fit for purpose and any risk has been mitigated to ALARP.
Assurance for System Handover is the assurance after successful commissioning of the system and the liability period to demonstrate that the system is fit for purpose and any risk has been mitigated to ALARP.