2010 Chalk River Information Bulletins
- NRU resumes steady operation
(2010 September 01) AECL reports that the NRU reactor resumed steady operation this afternoon after it was temporarily taken out of service on Monday, August 30th to repair the temperature controls for a moderator heat exchanger. - NRU temporarily out of service - Isotope production maintained
(2010 August 30) AECL reports that the NRU reactor has been temporarily taken out of service to repair the temperature controls for a moderator heat exchanger. It is expected that repairs will be completed within 36 hours. - NRU Status Report #73 - AECL provides update on NRU activities
(2010 August 25) AECL reports that the NRU return to service activities are complete and that the reactor reached high power operation on August 17. The first Molybdenum-99 isotope was harvested from NRU and delivered to our customer, MDS Nordion, on August 18. Today, AECL reports that the NRU has resumed full production of medical isotopes. - NRU Status Report #72 - AECL provides update on NRU activities
(2010 August 20) AECL reports that as part of NRU return to service activities, a planned reactor shut down is scheduled for early next week. - NRU Status Report #71 - NRU Reactor Harvests First Isotopes
(2010 August 18) AECL reports that it has harvested the first Molybdenum-99 isotopes from the NRU and that the reactor is in steady operation. - NRU Status Report #70 - AECL provides update on NRU activities
(2010 August 17) AECL reports that it has concluded low-power testing on the NRU reactor. As a result, the reactor is now operating at high power and can begin to create medical isotopes. - NRU Status Report #69 - AECL provides update on NRU activities
(2010 August 11) AECL reports that progress continues with NRU return-to-service activities. - NRU Status Report #68 - AECL provides update on NRU activities
(2010 August 04) AECL reports that progress continues with NRU return-to-service activities. Replacement and testing of the reactor monitoring equipment, which contributed to a delay in the restart of NRU, was successfully completed. - NRU Status Report #67 - AECL provides update on NRU activities
(2010 July 28) AECL reports that progress continues on the NRU return-to-service activities. The return-to-service team has successfully loaded more than half the reactor fuel completing its first stage of fuel loading and has conducted the first of four assessments used to verify fuelling calculations. - NRU Status Report #66 - AECL provides update on NRU activities
(2010 July 21) AECL reports that progress continues on the NRU return-to-service activities. The return-to-service team has completed commissioning of startup instrumentation - specialized equipment required for the restart of the reactor after the extended outage. - NRU Status Report #65 - AECL provides update on NRU activities
(2010 July 14) AECL reports that progress continues on the NRU return-to-service activities. - NRU Status Report #64 - AECL provides update on NRU activities
(2010 July 07) On Monday July 5, 2010, AECL appeared before the Canadian Nuclear Safety Commission (CNSC) in a public hearing to consider AECL’s application for the restart of NRU. - NRU Status Report #63 - AECL provides update on NRU activities
(2010 June 30) AECL reports that the Technical Standards and Safety Authority (TSSA) has completed its inspections and assessments of the NRU weld repairs and the vessel’s fitness-for-service. - NRU Status Report #62 - AECL provides update on NRU activities
(2010 June 25) AECL reports that it made a request to the Canadian Nuclear Safety Commission (CNSC) to reschedule the previously announced public hearing date to consider AECL’s application for the restart of NRU. - NRU Status Report #61 - AECL provides update on NRU activities
(2010 June 23) AECL reports that restart activities for the NRU Return-to-Service project are ongoing and that the NRU vessel has been refilled to its operating level. - NRU Status Report #60 - AECL provides update on NRU activities
(2010 June 16) AECL reports that one hundred per cent (100%) of the NRU weld repairs are now complete. During the past week, the repair team completed the finishing weld and a series of non-destructive examinations (NDE) of the final repair site. - NRU Status Report #59 - AECL provides update on NRU activities
(2010 June 09) AECL reports that the NRU weld repairs remain at ninety-eight per cent complete as work continues to address a single imperfection that was identified during non-destructive examination (NDE) of the final weld repair. - NRU Status Report #58 - AECL provides update on NRU activities
(2010 June 02) AECL reports that ninety-eight per cent of the NRU weld repairs are now complete. - NRU Status Report #57 - AECL provides update on NRU activities
(2010 May 26) AECL reports that the final and most challenging weld repair was applied to the NRU vessel over the weekend. Ninety-three per cent of the NRU weld repair activities are now complete. - NRU Status Report #56 - AECL provides update on NRU activities
(2010 May 19) AECL reports that work on the final repair site has commenced and to date 77 per cent of the NRU weld repairs and associated Non-Destructive Examinations (NDE) have been completed. - Loss of waste water from transfer tank
(2010 May 14) AECL reports a loss of approximately 5,220 litres of waste water from an underground transfer tank used by the waste treatment centre located at the Chalk River site. - NRU Status Report #55 - AECL provides update on NRU activities
(2010 May 12) AECL reports that 71 per cent of the weld repairs and associated Non-Destructive Examinations (NDE) have been completed. - NRU Status Report #54 - AECL provides update on NRU activities
(2010 May 05) AECL reports that 71 per cent of the weld repairs and associated Non-Destructive Examinations (NDE) have been completed. - Information Bulletin - Loss of Refrigerant
(2010 April 30) AECL reports a loss of approximately 775 kg of R-134A refrigerant from the MR-3 Experimental Loop. - NRU Status Report #53 - AECL provides update on NRU activities
(2010 April 28) AECL reports that 71 per cent of the weld repairs and associated Non-Destructive Examinations (NDE) have been completed. - Information Bulletin - Heavy Water Spill
(2010 April 27) During activities to refill the NRU Main Heavy Water Circuit in preparation for returning the reactor to service, approximately 42 litres of new inventory of heavy water was spilled within the NRU facility. - NRU Status Report #52 - AECL provides update on NRU activities
(2010 April 21) The repair phase of the project began on December 12, 2009. AECL reports that non-destructive examination (NDE) of the most recent repair is nearing completion bringing the total per cent of repair and associated NDE completed to date to 69 per cent, up from the 65 per cent reported last week. - NRU Status Report #51 - AECL provides update on NRU activities
(2010 April 14) The repair phase of the project began on December 12, 2009. To date 65 per cent of the repair work and associated non-destructive examinations have been completed. - NRU Status Report #50 - AECL provides update on NRU activities
(2010 April 07) The repair phase of the project began on December 12, 2009. To date 65 per cent of the repair work and associated non-destructive examinations have been completed. - NRU Status Report #49 - AECL provides update on NRU activities
(2010 March 31) The repair phase of the project began on December 12, 2009. AECL has successfully completed eight of ten weld site repairs. Work on the ninth repair site is in progress and is nearing completion. - NRU Status Report #48 - AECL provides update on NRU activities
(2010 March 25) The repair phase of the project began on December 12, 2009. AECL has successfully completed eight of ten weld site repairs representing more than half (56%) of the repair work necessary in order to return the NRU to service. - NRU Status Report #47 - AECL provides update on NRU activities
(2010 March 17) AECL reports that NRU reactor vessel repair activities continue. The overall repair process began on December 12, 2009. To date, 51 per cent of the repair activities and associated post-repair examinations have been completed. - NRU Status Report #46 - AECL provides update on NRU activities
(2010 March 10) AECL reports that NRU reactor vessel repair activities continue. The overall repair process began on December 12, 2009. - NRU Status Report #45 - AECL provides update on NRU activities
(2010 March 03) AECL reports that NRU reactor vessel repair activities continue. The overall repair process began on December 12, 2009. - NRU Status Report #44 - AECL provides update on NRU activities
(2010 February 24) AECL reports that NRU reactor vessel repair activities continue. The overall repair process began on December 12, 2009. - Contamination Incidents
(2010 February 24) AECL reports that during the past week, two incidents involving AECL employees and exposure to radioactive contamination have occurred. - NRU Status Report #43 - AECL provides update on NRU activities
(2010 February 17) AECL reports that NRU reactor vessel repair activities continue. The repair team completed the non-destructive examination of the second horizontal weld repair and is preparing the vessel for the next series of repairs. - NRU Status Report #42 - AECL provides update on NRU activities
(2010 February 10) AECL reports that NRU reactor vessel repair activities continue. The repair team completed its second horizontal weld repair and is preparing the vessel for the next series of repairs. - NRU Status Report #41 - AECL provides update on NRU activities
(2010 February 03) AECL reports that NRU reactor vessel repair activities continue. The repair team completed its first horizontal weld repair and are preparing the vessel for the next series of horizontal weld repairs. - NRU Status Report #40 - AECL provides update on NRU activities
(2010 January 27) AECL reports that the NRU reactor vessel repair activities are currently focused on preparation work in advance of the next series of weld repairs. - NRU Status Report #39 - AECL provides update on NRU activities
(2010 January 20) AECL reports that the NRU reactor vessel repair activities are currently focused on preparation work in advance of the next series of weld repairs. - NRU Status Report #38 - AECL provides update on NRU activities
(2010 January 13) AECL reports that the NRU reactor vessel repair activities are currently focused on preparation work in advance of the next series of weld repairs that will use horizontal welding machines. - NRU Status Report #37 - AECL provides update on NRU activities
(2010 January 06) AECL reports that NRU reactor vessel repair activities continue to progress at the Chalk River Laboratories.
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