Remote-Handling Systems

DOE-STD-6003-96

6.4.4 Remote-Handling Systems

Remote-handling systems may perform a number of functions to minimize personnel

exposure to radiation and other hazards during normal and off-normal conditions. In addition,

remote operations functions may be required to prevent or mitigate the consequences of off-

normal events. Potential remote operations include the following:

Erect portable radiation shielding panels.

Place or relocate experimental devices or other equipment in high radiation fields.

Test or inspect SSCs as necessary to ensure performance of safety functions.

Replace equipment or components in high radiation fields.

Decontaminate SSCs in preparation for maintenance.

Install/place diagnostic instruments.

Install consequence mitigation devices in high radiation fields or otherwise unsafe

conditions.

Remote-handling systems should be considered where it is anticipated that personnel

exposures may otherwise exceed dose or contamination guidelines.

Design guidance for remote-handling systems includes the following items:

a. General

Remote-handling systems may be operated and stored near the fusion device in an area

subject to intense magnetic, thermal, neutron, and gamma radiation environments. Persistent

low levels of hydrogen, deuterium, and tritium gases, as well as potential high levels of these

gases during off-normal events, may be present and should be considered in design. Activated

dust from plasma-facing components may be present during maintenance or off-normal condi-

tions and should be considered. The design should accommodate the following general

guidance:

1. The remote-handling system should be designed such that the operator will not be

exposed to a radiation dose rate greater than the facility ALARA exposure limits.

2. Remote-handling systems and components should not cause a collision with

safety systems or components while performing normal or abnormal plant mainte-

nance. Wiring through sections and/or modules of remote handling equipment

should be provided within the equipment.

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