Remote Maintenance

DOE-STD-6003-96

The above areas have emphasized SSCs performing a structural safety function derived

from the confinement evaluation guidelines. The testing and inspection program also applies to

safety-class SSCs performing a control, monitoring, or power function. The tests and

inspections that assess parameters related to the safety function should be identified. For

safety-class I&C components, this could include periodic or continuous testing of circuit

continuity, presence of grounds, or determination of circuit noise levels.

6.1.3.7 Remote Maintenance

The design should make provisions for appropriate accessibility, adequate shielding, and

reliable remote handling equipment to facilitate planned maintenance and conceivable repairs.

Remote maintenance requirements should be developed early in the design process taking into

account the need to keep worker exposures as low as reasonably achievable (ALARA). It is

strongly recommended that mockups or models be constructed during the detailed design

phase to confirm the feasibility of human and remote maintenance system design. More detailed

guidance is provided in Section 6.4.4.

6.1.3.8 Human Factors

Fusion facilities should consider human factors and operator-machine interfaces in the

early design and throughout the entire design process. The final design should eliminate, to the

extent practicable, the need for human interaction in the detection and mitigation of off-normal

events, including design-basis events. To the extent that human interactions are required, these

interactions should be specifically identified and justified by appropriate analysis, such as

human reliability analysis, to ensure the human interaction can be performed under the antici-

pated environmental conditions and within required time constraints at an acceptable level of

6.1.3.9 Fire Protection

The probability and effect of fires and explosions at fusion facilities should be minimized.

Safety-class SSCs should be designed and located to minimize, consistent with their intended

safety function, the probability and effect of fires and explosions. Noncombustible and heat-

resistant materials should be used whenever practical throughout the facility, particularly in

areas vital to the control of hazardous materials and maintenance of safety functions. Fire

detection and mitigation systems should be designed and provided with sufficient capacity and

capability to minimize the adverse effects of fires and explosions on safety-class SSCs. Fire

fighting systems should be designed to ensure that their rupture or operation does not signifi-

cantly impair the safety function provided by safety-class SSCs. The effect of fire suppression

systems on the facility should be considered. Current requirements for fire protection programs

are provided in DOE 1995a.