Glossary

(IEEE) The period of time that begins when a system is conceived and ends when the system is no longer available for use.

The course of developmental changes through which a system passes from its conception to the termination of its use; e.g., the phases and activities associated with the analysis, acquisition, design, development, test, integration, operation, maintenance, and modification of a system.

A high-level process narrative including system boundaries based on operational/functional requirements. Generally included in the commissioning plan.

The person or organizational element having overall (primary) responsibility for a system.

The person ultimately responsible for the system performance. This person may the head of the functional unit or department using that system, or maintaining the system although the role should be based on specific knowledge of the process rather than position in the organization. The system owner is responsible for ensuring that the system and its operation is in compliance and fit for intended use with applicable Standard Operating Procedures (SOPs) throughout its useful life. Responsibility for control of system access should be agreed between process and system owner. In some cases, the process owner also may be the system owner. Note: Ownership of the data held on a system should be defined and typically belongs to the system owner.

The person ultimately responsible for the availability, and support and maintenance, of a system and for the security of the data residing on that system.

(ISO) The process to demonstrate that a system has the ability to fulfill specified requirements.

(DOD) The application of engineering and management principles, criteria, and techniques to optimize all aspects of safety within the constraints of operational effectiveness, time, and cost throughout all phases of the system lifecycle.

(ISO) Application- independent software that supports the running of application software.

(IEEE) Software designed to facilitate the operation and maintenance of a computer system and its associated programs; e.g., operating systems, assemblers, utilities.

Descriptions of how the system will meet the functional requirements.

Descriptions of how the system will meet the functional requirements.

(IEEE) Testing conducted on a complete, integrated system to evaluate the systems compliance with its specified requirements.

(IEEE) The process of testing an integrated hardware and software system to verify that the system meets its specified requirements. Such testing may be conducted in both the development environment and the target environment.

Total volume of liquid in the system, including equipment, piping, valving, and instrumentation.