Post-modification testing documentation
Change traveler. A form used to transmit the change control package.
Comprehensive search. A process through which broad spectrums of documents that may contain design
information are identified, retrieved, and evaluated. Key steps involve locating and screening documents
that may contain design information and reviewing them to extract design information.
Cognizant system engineer. The engineer assigned technical responsibility for a particular system, who
coordinates technical activities related to the assigned system. The Cognizant System Engineer has
technical understanding of the system requirements design, operation, testing and maintenance. The
Cognizant System Engineer ensures that relevant documents, such as system design descriptions, technical
drawings, diagrams, lists, and procedures for surveillance, testing and maintenance are complete, accurate,
and up to date. The Cognizant System Engineer may also keep vendor technical information and
appropriate files concerning system history of repairs, modifications, operational problems, and other
unique conditions or circumstances. Equivalent terms include: cognizant engineer, system engineer,
system specialist, and subject matter expert.
Configuration. Configuration is the combination of the physical, functional, and operational characteristics
of the structures, systems, and components (SSCs) or parts of the existing facility, operation, or activity.
Configuration baseline. A configuration baseline consists of all approved documents that represent the
definition of the product at a specific point. (ISO 10007:1995(E))
Configuration control board or configuration board. The Configuration Control Board is a collection of
technical, management, and administrative experts assigned the authority and responsibility to make
decisions on the configuration and its management.
Configuration management (CM). Configuration management is a disciplined process that involves both
management and technical direction to establish and document the design requirements and the physical
configuration of the nuclear facility and to ensure that they remain consistent with each other and the
Configuration management structures, systems and components (CM SSCs). CM SSCs are the set of
structures, systems, and components that are managed under the configuration management process when
changes are proposed and implemented. At a minimum, the CM SSCs include the safety SSCs as identified
in the documented safety analysis, the Vital Safety System SSCs and other defense-in-depth SSCs. They
may also include SSCs related to:
Critical mission capability
Critical software capability
Adjacent SSCs that could affect safety.
Defense-in-depth. Defense-in-depth describes the multiple equipment and administrative features that
together are relied upon to provide preventive or mitigative functions to a degree proportional to the
Design assessments. Design assessments are performed to ensure that design documents have been
updated to reflect changes and accurately reflect the physical configuration of the nuclear facility.