Nuclear Safety Functions

DOE-STD-1036-93

C Related to nuclear safety (for reactors and non-reactor nuclear facilities)

C Essential for preserving environmental, safety, or health controls

C Critical to performance of the facility's designated mission.

4.1.1 Nuclear Safety Functions

Independent verification should be considered for all systems, structures, and

components performing nuclear safety functions. Facilities that handle or

process radioactive materials must determine which facility components require

independent verification, based on the reliance placed on the component for

preventing or mitigating releases of, or exposures to, radioactive materials.

The following are examples of components and systems that may have a

nuclear safety function:

Components that monitor radiation or radioactive materials (e.g., area

radiation monitor, criticality alert monitor, airborne activity monitor)

Components that prevent unintentional release of radioactive materials

(e.g., hold-up tanks, vent valves, drain valves)

Components that are essential for proper response to an emergency

(e.g., deluge systems, automatic barriers, safety injection systems).

4.1.2

Environmental, Safety, and Health (ES&H) Functions

All facilities (not just nuclear facilities) contain systems, structures, and

components that perform safety functions and/or prevent unintentional

releases of hazardous or toxic materials into the environment. Systems,

structures, and components performing these functions should be