AECL provides update on NRU activities

    CHALK RIVER, ON, Sept. 2 /CNW/ - The following information bulletin is in
accordance with Atomic Energy of Canada Limited's (AECL) ongoing commitment to
voluntary public disclosure of events related to the Chalk River Laboratories
    AECL's Non Destructive Examination (NDE) team has now completed the third
stage of examinations of the vessel wall using special tooling for vertical
inspection. NDE analysis activities remain on schedule.
    Work continues with vendors on proving repair tooling designs and
fabrication of the equipment. Qualification testing and training on the repair
tools will be required following manufacture.
    Testing of the repair processes and tools is continuing using the full
height NRU mock-up in the former NRX facility.
    Guidance on the duration of the shutdown continues to be founded on the
best evidence available, including the most up-to-date analysis of the
inspection data, progress on repair strategies, and critical path requirements
for restart after an extended shutdown.
    At this time, the application of the band weld build-up technique, and
the number of identified repair sites, indicates the NRU will return to
service during the first calendar quarter of 2010. Further guidance on a
return to service date will be provided when more information becomes
    Evidence collected to date continues to support AECL's view that the
necessary vessel repairs can be made and that NRU will be returned to service.
    AECL continues to work closely with the Canadian Nuclear Safety
Commission (CNSC), and CNSC safety inspectors are directly involved at the
Chalk River site.
    There is no threat to workers, the public, the environment or nuclear
safety related to this event.

    More information on the return to service of NRU is available at

For further information:

For further information: Dale Coffin, Director, Corporate
Communications, Atomic Energy of Canada Limited, 1-866-886-2325 (AECL)

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