Events Reporting: Nuclear Power Plants

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2017

New Brunswick Power (NB Power)

Date of event: August 4, 2017

Point Lepreau Generating Station, New Brunswick

The CNSC was informed by NB Power that the Point Lepreau Nuclear Generating Station (PLNGS) is temporarily offline due to an equipment issue. CNSC staff are onsite and monitoring the situation. There are no safety concerns for members of the public or workers, and no risk to the environment.

Update: The Point Lepreau Nuclear Generating Station was returned to service and reconnected to the grid on August 8, 2017.

Visit NB Power's website for more information.

Bruce Power

Date of event: August 2, 2017

Bruce A Nuclear Generating Station, Ontario

Update on Bruce Power event

The August 2, 2017 leak at the Bruce A Nuclear Generating Station involving the failure of primary heat transport pump seals has been stopped and the water recovered into drums. Onsite CNSC inspectors continue to provide regulatory oversight to determine the cause of the event. There were no detectable releases of radionuclides from the facility. The event did not require a report to the Ontario Ministry of the Environment and Climate Change (MOECC), but it will be reported at the public Commission meeting on August 16, 2017 as part of the Power Reactor Status Report. Unit 3 remains shut down as part of a planned maintenance outage.

Bruce A Nuclear Generating Station, Ontario

The CNSC was informed by Bruce Power, in accordance with its licence conditions, of a failure of the primary heat transport pump seals on a pump in Unit 3 at the Bruce A Nuclear Generating Station. This resulted in a release of tritiated water. The release was contained to the building, and cleanup is in progress. There are no safety concerns for members of the public or workers, and no releases above regulatory limits to the environment are anticipated. CNSC inspectors are onsite and investigating.

Visit Bruce Power’s website for more information on this event.

Bruce Power

Date of event: March 26, 2017

Bruce B Nuclear Generating Station, Ontario

Sunday, March 26, 2017 an electrical worker on the non-radiological side of the station received an electrical shock and was taken to hospital. The worker remains in stable condition. All electrical work was stopped until further investigation of the incident was completed.

The worker was performing maintenance on a circuit breaker in Unit 5. The engineering barrier, in place to protect workers from electrical voltage, failed to operate resulting in the worker injury.

The Ministry of Labour was notified and Bruce Power is conducting its own investigation to fully understand what happened and how to prevent similar incidents in the future.

There is no impact to the health and safety of the public or the environment due to this event.

Update: The investigation to the worker injury of March 26, 2017 is ongoing. The details of the cause have yet to be determined. CNSC staff will provide an update at the next Commission meeting in April, 2017.

Visit Bruce Power’s website for more information on this event.

Ontario Power Generation (OPG)

Date of event: February 10, 2017

Darlington Nuclear Generating Station, Ontario

The CNSC was informed by OPG that a motor sent to a third-party company for repair contained a small amount of tritiated water and surface radiation contamination. The contamination was cleaned up by OPG and the motor was returned to Darlington. Preliminary results indicate negligible impact to workers, the public and the environment. CNSC staff are monitoring OPG’s investigation of this event and corrective actions. This event will be discussed at a public Commission meeting on March 8, 2017.

Visit Ontario Power Generation’s website for more information.

2016

New Brunswick Power (NB Power)

Date of event: October 6, 2016

Point Lepreau Generating Station, New Brunswick

The CNSC was informed by NB Power that the Point Lepreau Nuclear Generating Station (PLNGS) was temporarily taken offline due to a configuration issue on the system that provides water to the station's steam generators. The issue has been corrected, and the unit is in the process of being returned to service.

The CNSC has onsite inspectors monitoring PLNGS's response to the event. CNSC staff are reviewing PLNGS's initial reports and corrective actions taken. This event will be discussed at an upcoming public Commission meeting.

There are no safety concerns for members of the public or workers.

Visit NB Power's website for more information.

Ontario Power Generation (OPG)

Date of event: August 10, 2016

Darlington Nuclear Generating Station, Ontario

The CNSC was informed by OPG that a sub-contractor at the Darlington station received a minor electrical shock from the welding equipment being used by the worker on August 10. As a precaution, the worker was transported to a nearby hospital but returned for work the next day, with no restrictions. Visit OPG's website for more information.

Ontario Power Generation (OPG)

Date of event: August 1, 2016

Pickering Nuclear Generating Station, Ontario

The CNSC was informed that there was a leak of approximately 8 litres of oil from a breathing air compressor into a station floor drain. Operators have safely shut down the compressor and initiated clean up. This spill required reporting to the Ministry of the Environment and Climate Change.
There was no impact to the health and safety of employees or the public, and there was no impact on the environment. CNSC staff are reviewing OPG's initial reports and corrective actions taken. This event will be discussed at an upcoming public Commission meeting.

Visit Ontario Power Generation's website for more information on this event.

Ontario Power Generation (OPG)

Date of event: July 6, 2016

Pickering Nuclear Generating Station, Ontario

The CNSC was informed by OPG, in accordance with its licence conditions, that there was a contained leak of liquid hydrazine within the turbine building. There was no impact to the health and safety of employees or the public and there was no impact on the environment. CNSC staff are reviewing OPG's initial reports and corrective actions taken. This event will be discussed at an upcoming public Commission meeting.

Visit OPG's website for more information on this event.

New Brunswick Power (NB Power)

Date of event: February 25, 2016

Point Lepreau Generating Station, New Brunswick

The CNSC was informed on February 25, 2016 of a fire alarm at the Point Lepreau Generating Station (PLGS) triggered by a lightning strike near a service building. PLGS is currently operating at 100 percent power in a safe and steady state. CNSC inspectors are onsite and monitoring PLGS's response to the event.
There are no safety concerns for members of the public or workers.

As per CNSC's requirements for public disclosure, NB Power has posted information about this event.

Visit NB Power's website for more information.

Bruce Power

Date of event: February 12, 2016

Bruce B Nuclear Generating Station, Ontario

The CNSC was informed by Bruce Power, in accordance with its licence conditions, that an employee was injured outside the Bruce B Nuclear Generating Station. The employee received first aid from Bruce Power emergency staff and was transported by ambulance to a local hospital for treatment for his injury.

Visit Bruce Power's website for more information on this event.

Bruce Power

Date of event: February 1, 2016

Bruce B Nuclear Generating Station, Ontario

The CNSC was informed by Bruce Power, in accordance with its licence conditions, that a worker was injured at the Bruce B Nuclear Generating Station. The individual was performing work as part of the Unit 8 planned maintenance outage when the injury occurred. This event occurred in the Turbine Hall, which is located in a non-radiological area of the station. There is no impact to the health and safety of the public or the environment due to this event. CNSC staff are reviewing Bruce Power's initial reports and corrective actions taken. This event will be discussed at an upcoming public Commission meeting.

Visit Bruce Power's website for more information on this event.

2015

Bruce Power

Date of event: October 23, 2015

Bruce A Nuclear Generating Station, Ontario

On Friday, October 23, 2015, Bruce Power informed the CNSC that staff access to Bruce A was limited in order to monitor and manage a small amount of moderator water on the floor within the station. Staff responded by monitoring and cleaning up the small amount of water, while appropriately minimizing access to the area. There was no impact on the safety of the public, employees or the environment.

Visit Bruce Power's website for more information on this event.

Bruce Power

Date of event: October 1 and 2, 2015

Bruce A and B Nuclear Generating Station, Ontario

Bruce Power informed the CNSC that Units 3 and 8 were temporarily removed from service for maintenance repairs. Both shutdowns were conducted in a controlled manner, and there was no impact on the safety of the public, employees or the environment. Unit 4 is currently undergoing a planned maintenance outage. As per CNSC's requirements for public disclosure, Bruce Power has posted information regarding these events.

Visit Bruce Power's website for more information.

Ontario Power Generating (OPG)

Date of event: September 28, 2015

Darlington Nuclear Generating Station, Ontario

The CNSC was notified by OPG that smoke, caused by an electrical short on the conventional side of the Darlington Nuclear station, activated the fire alarm system. Staff responded and resolved the electrical issue. There was no impact on the safety of the public, employees or the environment. Units 1, 2, 3 and 4 were in a planned station maintenance outage during the incident. In accordance with the CNSC's requirements for public disclosure,
OPG has posted information about this event. 

Visit OPG's special interest station updates page for more information.

New Brunswick Power (NB Power)

Date of event: September 24, 2015

Point Lepreau Generating Station, New Brunswick

The CNSC was notified by NB Power that its Point Lepreau Generating Station is temporarily offline to facilitate repairs on one of the station's stand-by safety systems. This work has no impact on nuclear safety. As per CNSC's requirements for public disclosure, NB Power has posted information about this event.  

Visit NB Power's website for more information.

Ontario Power Generating (OPG)

Date of event: September 16, 2015

Pickering Nuclear Generating Station, Ontario

The CNSC was notified by OPG that Unit 4 at the Pickering Nuclear Generating Station was brought off-line for a forced outage after experiencing a failure in the turbine governor valve trip circuit. There was no threat to the safety of the public, employees or the environment and no radioactive systems are located in this area of the station.  As per CNSC's requirements for public disclosure, OPG has posted information about this event. 

Visit OPG's special interest station updates page for more information.

New Brunswick Power (NB Power)

Date of event: May 28, 2015

Point Lepreau Generating Station, New Brunswick

On Thursday, May 28, 2015, the Canadian Nuclear Safety Commission (CNSC) was notified by NB Power that its Point Lepreau Generating Station is temporarily offline to facilitate testing and analysis of the turbine system. This work has no impact on nuclear safety. As per CNSC's requirements for public disclosure, NB Power has posted information about this event.  

Visit NB Power's website for more information.

Ontario Power Generating (OPG)

Date of event: April 14, 2015

Darlington Nuclear Generating Station, Ontario

OPG reported a leak of heavy water during planned maintenance activities on Unit 2 at the Darlington Nuclear Generating Station. The unit was safely shut down, and the heavy water was contained and recovered. There was no impact on the environment or the public.

Visit OPG's special interest station updates page for more information.

Hydro-Quebec

Date of event: April 14, 2015

Gentilly-2 Nuclear Generating Station

On Monday, April 14, 2015, the Canadian Nuclear Safety Commission (CNSC) was notified by Hydro-Québec that water had accumulated on the access road leading to the Gentilly-2 nuclear generating station (NGS). This accumulation was caused by an ice dam on the Gentilly River located nearby. There is no impact to the NGS, and the water is slowly receding.

Visit Hydro-Québec's website for more information on this event.

New Brunswick Power (NB Power)

Date of event: March 18, 2015

Point Lepreau Generating Station, New Brunswick

On Wednesday, March 18, 2015, the Canadian Nuclear Safety Commission (CNSC) was notified by NB Power that its Point Lepreau Generating Station will be shut down for approximately two weeks. The temporary shutdown is to perform repairs to a fueling machine. This maintenance work, which has no impact on nuclear safety, will be discussed at the next public Commission meeting on March 25, 2015. As per CNSC's requirements for public disclosure, NB Power has posted information about this event.

Visit NB Power's website for more information.

Ontario Power Generation (OPG)

Date of event: January 30, 2015

Darlington Nuclear Generating Station, Ontario

OPG reported that a worker was injured at its Darlington Nuclear Generating Station.

Visit OPG's special interest station updates page more information.