Past Design Practices

DOE-HDBK-6004-99

Past Design Practices

Activation Control Methods

The choice of materials of construction is the only known means of minimizing the activation of

materials from neutron bombardment. For metallic materials, the over riding structural and

contamination concerns require the usage of activating materials, usually stainless steel. For non-

metallic materials, if possible, materials of lower activation potential should be utilized, for greases,

elastomers, etc.

Contamination Control Methods

Tritium contamination is volumetric in nature and can not be easily eliminated. The contamination

by other materials can be minimized by surface condition induced entrapment. Smooth surfaces and

no surface coatings will both minimize contamination and simplify decontamination.

Electronics Protection Methods

The very high electrical and magnetic normal and transient fields potentially present in the fusion

facility will present a hazard to all electronics systems. Maximum protection should be provided for

all interferences that will normally occur as to not interfere with routine operation of remote handling

operations. The off normal interferences should not prevent safe retrieval of equipment for repair,

and must not introduce unwanted motions; but off normal excursions may result in discontinuation

of operation.

Internal Wiring Methods

Wiring through sections and/or modules of remote handling equipment should be provided within the

equipment. Externally deployed wiring is expected to present an undesirable hazard to operations.

The damage to or damage by externally routed cabling has historically represented an impediment to

successful operation. The wiring connectors between sections should also be internal, for operability

reasons and to address the requirements shown in the following section.

Operational Requirements

Mode of Operation

The remote handling systems may be operated in the following modes:

Fully Robotic

Telerobotic

Teleoperation

Manual

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