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On a number of occasions when JET has been vented, the air in the vessel has been sampled prior to opening any flanges. Large amounts (approx.1.3 x 1.0 E23 atoms) of deuterium are found to have been released from the walls, together with a proportion of the tritium previously produced from (d-d) reactions. A far larger amount of tritium (comparable to the deuterium level above) would be released in the active phase of JET. The amount released can be greatly reduced by carbonising before venting, or by venting the vessel and re-evacuating prior to the venting for personnel access.

Additional information

Authors: COAD J P, JET Joint Undertaking, Abingdon, Oxon. (GB)
Bibliographic Reference: Report: JET-R(89)15 EN (1989)
Availability: Available from the Publications Officer, JET Joint Undertaking, Abingdon, Oxon. OX14 3EA (GB)
Record Number: 199010649 / Last updated on: 1994-12-01
Original language: en
Available languages: en
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