Site updates provide the community with information of interest outside of our formal Media Centre and Community Blog.

Aug. 10, 2017

Bruce A Update

Bruce Power is investigating the cause of the August 2, 2017, release of heat transport water in a diked area immediately adjacent to the pump inside the Bruce A station. The diked area is designed to collect leakage if it occurs.

Bruce Power investigates events such as this in order to ensure they do not reoccur and shares this operating experience with other nuclear plants around the world.

The heat transport water, which contains radionuclides, was recovered into 30 drums the same day as the release and there were no detectable releases and no impact on employees, the public or the environment.

Unit 3 remains shut down as part of a planned maintenance outage while the remaining Bruce Power units continue to operate at high power.

Aug. 2, 2017

Bruce A update

Earlier today, with Unit 3 in a planned shutdown, crews encountered an issue with a pump as they aligned the unit for an inspection program.

As a result, a quantity of water leaked in the area of the pump and contained within a diked area immediately adjacent to the pump as designed. This area is in place to collect leakage if it occurs. Crews have cleaned up the water and there are no impacts to staff, the public or the environment.

Bruce A Units 1, 2 and 4 and the four Bruce B units continue to provide electricity to the Ontario grid.

Read the Canadian Nuclear Safety Commission report.

May 24, 2017

Bruce A update

Unit 4 was returned to service.

May 19, 2017

Bruce Power Transportation Update

Bruce Power crews responded to minor transportation incidents on Thursday where loads within two trucks shifted inside their containers.

The trucks were carrying platform components in qualified containers consistent with transport regulations. The platforms, which are essentially like large tables, are carrying low levels of radioactivity. The shipments were on their way to a licensed storage facility.

There has been no spread of contamination outside of either container and no impact on employees, the environment or the public.

The drivers stopped their vehicles to inspect the load after feeling them shift and Bruce Power crews were called to inspect the containers to ensure their integrity. A small hole in one container was sealed and the loads were secured and delivered back to the Bruce Power site for further inspection.

May 18, 2017

Bruce B update

Unit 5 was safely returned to service following a brief forced outage.

May 16, 2017

Bruce B update

Unit 5 was removed from service for a forced outage.

May 14, 2017

Bruce A update

Unit 4 was removed from service ahead of a surplus baseload generation request.

May 12, 2017

Bruce B update

Unit 5 was safely returned to service this afternoon at 22 minutes past midnight after a planned outage which began on Feb. 3.

April 18, 2017

Bruce A update

Unit 4 was safely returned to service after a brief outage which was requested by the Independent Electricity System Operator (IESO) due to surplus baseload in the province.

April 17, 2017

Bruce A update

Unit 4 was safely removed from service after a brief outage which was requested by the Independent Electricity System Operator (IESO) due to surplus baseload in the province.

March 26, 2017

Bruce B Safety Update

Earlier today, a Bruce Power employee working on an electrical maintenance activity as part of the Unit 5 outage on the non-nuclear side of the plant received an electrical contact. The worker was transported to an off-site medical facility and is being treated for injuries. Throughout the response the worker’s condition remained stable.

Bruce Power takes any safety event very seriously and immediate actions have been taken to prevent reoccurrence with other workers carrying-out similar work. Any type of workplace injury that occurs on the site is viewed by Bruce Power as preventable.

The company has notified Ministry of Labour and will continue to investigate the matter to obtain all the facts with a focus on prevention and continuous improvement based on this experience.

March 16, 2017

Bruce B update

Unit 6 was safely returned to service this afternoon at 4:30 p.m. after a turbine run-back earlier in the day, which led to the unit coming offline at 10:40 a.m. Our Operations team responded to this unexpected condition, promptly and exemplary in line with their procedures and training, to manually setback the reactor to 50% reactor power. Healthy unit zone levels and the use of our adjusters prevented a longer poison outage and allowed the unit to be safely re-synchronised.

March 1, 2017

Bruce A update

​Unit 2 was returned to service at 5:26 p.m. on March 1 following a three-day forced outage to repair a section of 30-inch pipe that had been leaking.

February 28, 2017

Bruce A update

Unit 2 was removed from service on Feb.26 for a five-day forced outage to repair a section of 30-inch pipe that had been leaking between the Deaerator (D/A) and the Boiler Feed Pump suction.

February 26, 2017

Bruce B update

Unit 6 was safely returned to service Saturday evening at 10:50 p.m. after a brief forced outage to repair Emergency Cooling Injection valve MV15.

February 23, 2017

Bruce B update

Unit 6 was safely removed from service Thursday, Feb. 23, precisely at 6:00 p.m. according to plan, to repair an Emergency Coolant Injection (ECI) Motorized Valve MV-15.

February 3, 2017

Bruce B update

Unit 5 was safely removed from service today to begin its planned maintenance outage, the first major outage campaign of 2017.

The $135 million maintenance and inspection program will last about 90 days and will help extend the life of the Bruce Power site, ensuring the electricity it provides Ontario families and businesses continues to be part of the solution now and in the future by providing a source of low-cost, stable power.

February 3, 2017

Bruce A update

Unit 1 was returned to service following a four-day outage to allow for Hydro one switchyard upgrades.

February 2, 2017

Bruce B update

Unit 7 was returned to service following a short forced outage.

January 31, 2017

Bruce B update

Unit 7 was removed from service for a short forced outage/

January 31, 2017

Bruce A update

Unit 1 was removed from service to allow for Hydro one switchyard upgrades.

January 19, 2017

Bruce A update

Unit 4 was synchronized to the Independent Electricity System Operator (IESO) grid early this afternoon, bringing the forced outage in event-free and 62 hours ahead of its original target.

January 13, 2017

Bruce A update

Unit 4 was removed from service for a nine-day outage to repair one of the steam valves on the turbine.

December 20, 2016

Bruce B update

Unit 7 was safely returned to service at 6:02 p.m., 48 hours ahead of the original 10-day forced outage schedule.

December 15, 2016

Bruce A update

Unit 1 was safely returned to service after a turbine trip during a safety system test on the electrical system.

December 13, 2016

Bruce A update

Unit 2 was synchronized to the province’s electrical grid on Tuesday afternoon following a 13-day outage to improve equipment health.

December 12, 2016

Bruce B update

Unit 7 was removed from service to balance the generator rotor to reduce vibrations after a long planned outage and a complete rotor rewind. .

December 12, 2016

Bruce B update

Unit 7 was synchronized to the province’s electrical grid at 2:15 a.m. following a 94-day planned outage.

December 11, 2016

Bruce A update

Unit 1 was removed from service after experiencing a turbine trip.

December 1, 2016

Bruce A update

Unit 2 was removed from service to repair a passing valve on SDS2.

October 20, 2016

Bruce A update

Unit 4 was synchronized to the grid today after an 11-day forced outage to repair the governor control system on the unit’s generator.

Excellent teamwork from Operations, Engineering, Maintenance, Supply Chain and the vendor, using internal and external Operating Experience (OpEx), allowed us to achieve success together in working to troubleshoot, repair and return the unit to service.

October 9, 2016

Bruce A update

Unit 4 was removed from service during ramp-up activities.

The conservative decision was made to abort the unit ramp-up and investigate the cause of this issue.

September 21, 2016

Bruce B update

Unit 5 was returned to service today after a five-day outage to replace an Emergency Coolant Injection valve.

During this outage, we also used this opportunity to replace the Reactor Area Bridge brakes with upgraded equipment to prevent premature failure which has been the cause of previous forced outages.

September 16, 2016

Bruce B update

Unit 5 was safely removed from service today for a short maintenance outage.

An Emergency Coolant Injection Valve will be replaced and the outage is expected to last about 70 hours.

September 9, 2016

Bruce B update

Unit 7 was safely removed from service today to begin its planned maintenance outage, the last major outage campaign of a very busy 2016.

The maintenance and inspections we have planned for B1671 are designed to prepare the equipment for another long, safe and reliable run, through to its next planned outage. Approximately 24,000 tasks are built into a complex 92 day plan which will see maintenance performed on almost every system throughout the entire unit.

August 29, 2016

Bruce A update

Unit 4 was returned to service today after its 24-day maintenance outage was safely completed.

Strong teamwork and individual commitment to event-free execution allowed us to successfully complete a very challenging 2016 Bruce A planned outage program, which began on April 1.

August 28, 2016

Bruce A update

Unit 2 was returned to service today after a five-and-a-half day forced outage to address a heat transport leak.

Excellent teamwork led to the discovery and repair of the source of the elevated leak rate in Unit 2, and support from the entire organization allowed us to fix the instrument line issue and return the unit to service.

August 27, 2016

Bruce B update

Unit 6 was returned to service today after a short three-day forced outage.

The strong response of the Operations team is a reflection of our station training program. The diagnosis and demonstration of the Operator Fundamentals is indicative of a training program which is engaged, thorough, and always striving for excellence.

August 24, 2016

Bruce B update

Unit 6 was removed from service today to address an issue with High Pressure Service Water temperature control.

Operations made the prompt and conservative decision to remove the unit from service and followed their procedures and training to make sure this was carried out safely and event-free. Engineering and Operations are carrying out investigations into the issue, which will determine the cause of the forced outage.

The unit is currently stable at zero power cold on the approach to critical. The outage duration is expected to be approximately three days.

August 22, 2016

Bruce A update

Unit 2 was safely removed from service today to address a leak in the heat transport system.

The duration of the outage will be established based on results of our vault leak search.

August 13, 2016

Bruce B update

Unit 6 was returned to service today after Hydro One switchyard repairs were completed.

August 12, 2016

Bruce B update

Unit 6 was safely removed from service today so Hydro One could complete work in the switchyard.

The unit is not expected to be offline for long.

August 5, 2016

Bruce A update

Unit 4 was removed from service today for a forced outage to conduct Grayloc repairs. The maintenance program is expected to last until the end of August.

Units 1-3 and 6-8 are currently producing over 30 per cent of Ontario’s electricity at 30 per cent less than the average residential price of power.

July 29, 2016

Bruce A update

Unit 3 was returned to service today after a planned maintenance outage. The outage finished a few days ahead of schedule and is now producing carbon-free electricity to the people of Ontario.

June 19, 2016

Bruce A update

Unit 2 was returned to service after a planned maintenance outage, which began April 1.

Unit 3 remains in the early days of its planned maintenance outage, which is expected to be completed in early-August.

June 3, 2016

Bruce A update

Unit 1 was returned to service today, effectively ending the Station Containment Outage, which began May 5.

Units 2 and 3 remain offline for their planned maintenance outages.

May 27, 2016

Bruce B update

Unit 8 was resynchronized to Ontario’s electrical grid today 24 hours ahead of plan after a two-day forced outage to address high temperatures in the vault. A feeder cabinet panel was found partially open so it was closed and secured shut. Some insulation on a boiler leg was also adjusted.

After these items were addressed the temperature immediately began to drop back to normal.

May 25, 2016

Bruce B update

Unit 8 was safely removed from service this morning to investigate an elevated vault temperature reading.

The forced outage is projected to take three days to complete.

May 22, 2016

Bruce A update

Unit 4 was returned to service today as the Bruce A station continues to work through its Station Containment Outage program.

The SCO is expected to be complete later this week.

May 16, 2016

Bruce B update

Unit 6 was returned to service today after a short-duration outage.

All Bruce B units are currently providing nearly 20% of Ontario’s electricity while Bruce A is in the midst of its Station Containment Outage, with all four units offline.

May 14, 2016

Bruce B update

Unit 6 was safely removed from service today. Operations are currently investigating the cause.

May 5, 2016

Bruce A update

Units 1 and 4 were safely removed from service today as part of the Station Containment Outage, which is now underway at Bruce A.

The SCO is a planned outage that will confirm the integrity of Bruce A’s safety systems. It is mandated by our independent regulator, the Canadian Nuclear Safety Commission.

Units 1 and 4 will return to service later this month.

May 1, 2016

Bruce A update

Unit 3 was safely removed from service to begin a planned maintenance outage.

It joins Unit 2 in a maintenance outage, while Units 1 and 4 and all four units at Bruce B are providing carbon-free electricity to Ontario’s grid.

April 25, 2016

Bruce B update

Unit 8 was safely returned to service today after a planned maintenance outage, which began Jan. 15.

The unit is now poised to provide 822 megawatts of carbon-free electricity during the peak periods that occur during Ontario’s summer months.

March 31, 2016

Bruce A update

Unit 2 was safely removed from service due to Surplus Baseload Generation in the province over night.

The unit is scheduled to begin a planned maintenance outage on April 1 and the program will proceed as expected.

March 25, 2016

Bruce B update

Unit 6 was returned to service after a short maintenance outage repaired the brakes on the reactor bridge.

The decision to repair the bridge was both proactive and conservative to prevent the fuelling machine from becoming stranded on the reactor bridge at a later time. It demonstrates our core value of safety first with a strong focus on reactor safety.

All Bruce Power units, save for Unit 8 which is in the midst of a long planned maintenance outage, are currently in service.

March 22, 2016

Bruce B update

Unit 6 was safely removed from service today for a short-duration maintenance outage to investigate and repair the Reactor Area Bridge. The proactive choice to remove the unit from service will prevent the fuelling machine from becoming stranded on the reactor bridge at a later time.

It demonstrates our core value of safety first with a strong focus on reactor safety.

February 18, 2016

Bruce A update

Unit 3 was returned to service today after a short-duration forced outage. The unit is currently at 30% power as it prepares to provide Ontario with 750 megawatts of carbon-free electricity.

February 16, 2016

Bruce A update

Unit 3 was safely removed from service this morning. The cause is still being determined and it is currently unknown how long the outage will continue.

February 12, 2016

Bruce B update

This morning, a Bruce Power employee was injured on his way into the Bruce B station for his shift. The employee received first aid from Bruce Power emergency staff and was transported by ambulance to a local hospital for treatment for his injury. All proper notifications have been made and an investigation is being conducted.

February 10, 2016

Bruce B update

Unit 5 was returned to service today after a short-duration forced outage. Maintenance and Operations teams quickly remedied the issue on the reactor fuelling bridge, and the unit is ramping up to high power.

February 7, 2016

Bruce B update

Unit 5 was safely removed from service this evening due to an issue with the reactor fuelling bridge. It is expected to be offline for just a few days.

Units 1-4, 6 and 7 continue to provide carbon-free electricity to the people of Ontario during the winter months. Unit 8 is currently on a long planned maintenance outage.

February 2, 2016

Safety Update

On Feb. 1 a Bruce Power Employee working on a routine maintenance activity as part ‎of the Unit 8 outage was injured when some gas became ignited resulting in a burn to the worker. Bruce Power first responders transported the worker to an off-site hospital and the worker is being treated. This occurred on the non-nuclear side of the plant known as the Turbine Hall.

Bruce Power takes any safety event very seriously and immediate actions have been taken to prevent reoccurrence with other workers carrying-out similar work. Any type of workplace injury that occurs on the site is viewed by Bruce Power as preventable. The company has notified both the CNSC and Ministry of Labour and will continue to investigate the matter to obtain all the facts with a focus prevention and continuous improvement based on this experience.

January 15, 2016

Bruce B update

Unit 8 was removed from service today, signalling the start of the 100-day planned maintenance outage, which will see $116 million private dollars invested into the unit.

There are roughly 24,000 tasks built into the complex outage plan, which will see maintenance performed on almost every system throughout the entire unit.

December 30, 2015

Bruce B update

Unit 5 was returned to service after an issue with elevated vibrations in the turbine was addressed by our Operations and Maintenance crews.

December 29, 2015

Bruce B update

Unit 5 was returned to service after a short, forced outage, which began on Dec. 27.

The unit was removed from service shortly thereafter due to elevated vibrations in the turbine.

December 27, 2015

Bruce B update

Unit 5 was removed from service for a short, forced outage.

It is expected to return to service within a couple of days.

November 22, 2015

Bruce A update

Unit 2 returned to service this evening after a one-day forced outage to replace a computer board.

All Bruce Power units are now operating at full power.

November 21, 2015

Bruce A update

Unit 2 was safely removed from service tonight due to a digital control computer board issue. This ended Unit 2’s run of 282 consecutive days of operation.

It is expected to return to service within a day.

 

November 15, 2015

Bruce A update

Unit 1 was returned to service today after a short outage to make a repair to a clamp in the switchyard.

All eight units are providing carbon-free power to Ontario’s grid as we enter the cold winter season.

 

November 13, 2015

Bruce A update

Unit 1 was safely removed from service to make a minor repair in the switchyard.

The unit is expected to be offline for two days.

 

November 8, 2015

Bruce A update

Unit 4 was synched to the grid today, following a planned maintenance outage.

The return of Unit 4 to service marks the completion of a very complex and extensive outage for Bruce A and is the end of the site planned outages for 2015.

All eight Bruce Power units are now providing over 30% of Ontario’s power at 30% below the average price of electricity in the province.

 

October 23, 2015

Bruce A update

On Friday, Oct. 23, consistent with Bruce Power procedures, staff access to Bruce A was limited to monitor and manage a small amount of moderator water on the floor within the station.

Staff responded to monitor and clean-up the small amount of water, while appropriately minimizing access to the area, effectively communicating to all personnel including follow-up monitoring as needed.

Due to the actions taken consistent with our ‘Safety First’ value, there has been no impact to the public or the environment.

 

October 7, 2015

Bruce A update

Unit 3 was returned to service on Oct. 6 after repairs were made to a u-joint on the north fueling machine.

Aside from Unit 4, which is in the midst of a long, planned maintenance outage, all Bruce Power units are providing low-cost, carbon-free electricity to Ontario’s grid.

 

October 6, 2015

Bruce B update

Unit 8 was returned to service today after a short outage to repair a liquid zone control valve.

Unit 3 remains offline while repairs to the north fuelling machine are being completed, while Unit 4 is in the midst of planned maintenance outage as well.

 

October 5, 2015

Bruce Power update

Two Bruce Power units were removed from service late last week to conduct maintenance repairs.

Unit 3 was safely removed from service on Thursday, Oct. 1, to repair the north fueling machine. The repairs are expected to take less than a week.

Unit 8 was also safely removed from service on Friday, Oct. 2, to repair a valve. The unit is expected to return to Ontario’s electricity grid early this week.

Bruce Power’s Unit 4 is currently undergoing a planned maintenance outage, where thousands of tasks are being completed by our outage team to ensure Unit 4 can reliably provide low-cost, carbon-free electricity for Ontarians this winter. This is expected to be completed in the coming weeks.

 

September 23, 2015

Bruce A update

Unit 3 was returned to service today after a short maintenance outage.

Unit 4 continues with its planned maintenance outage.

 

September 11, 2015

Bruce A update

Unit 3 entered an unplanned outage on Sept. 10 to allow staff to conduct inspection and maintenance activities. The unit will return to service by the end of the month. Unit 4 is currently offline for a planned outage and Units 1, 2, 5, 6, 7 and 8 are providing electricity to Ontario’s grid.

 

June 10, 2015

Bruce B update

Unit 8 was returned to service today after a short, two-day forced outage to repair the stator cooler on Primary Heat Transport pump motor 3.

All units, except Unit 6 which is progressing through an 84-day planned maintenance outage, are providing over 30 per cent of Ontario’s electricity.

 

June 8, 2015

Bruce B update

Unit 8 was safely removed from service today due to an issue with the main heat transport pump motor.

The investigation is continuing, but the unit is expected to return to service in two days.

 

June 2, 2015

Bruce A update

Unit 3 was synchronized to Ontario’s grid today after being removed from service due to Surplus Baseload Generation on May 31.

 

May 31, 2015

Bruce A update

Around 1:30 a.m. today, Unit 3 was removed from service at the request of the electrical grid operator due to Surplus Baseload Generation (SBG) in the province.

The outage is expected to last about 48 hours.

 

May 26, 2015

Bruce B update

Unit 5 returned to service after a two-day Surplus Baseload Generation Outage, as requested by the IESO.

Seven of Bruce Power’s eight units are supplying over 25 per cent of Ontario’s power.

 

May 26, 2015

Bruce A update

Unit 3 was returned to service after repairs, modifications and testing was completed on the exciter system that forced the eight-day outage.

Unit 5 remains in an SBG outage, while Unit 6 continues its planned maintenance outage.

 

May 24, 2015

Bruce B update

Unit 5 was removed from service at the request of the IESO due to surplus baseload generation.

The unit will be offline for a minimum of 48 hours.

 

May 17, 2015

Bruce A update

Unit 3 tripped offline today after a loss of excitation.

The Operations team precisely controlled the unit, with the reactor safely shutdown and currently on approach to critical. We have engaged our site and OEM experts to troubleshoot this turbine trip.

 

May 11, 2015

Bruce B update

Units 5, 7 and 8 were safely returned to service today after a successful Vacuum Building Outage.

The synchronization of Unit 8 to the grid at 6:16 p.m.officially marked the end of the outage, which has been one the most complex evolutions in the history of Bruce B and one of the most successful, coming to a conclusion 93 hours and 44 minutes ahead of schedule.

Unit 5 was synchronized to the grid later Sunday evening at 10:32 p.m. and today at 2:17 p.m. Unit 7 also synchronized to the grid. All three units returned to service well ahead of plan.

Unit 6 remains offline for its 84-day planned maintenance outage.

 

May 7, 2015

Bruce A update

Unit 3 was successfully returned to Ontario’s grid after a short-duration forced outage.

All Bruce A units are currently operating, while Bruce B’s four units are offline for the Vacuum Building Outage.

 

May 4, 2015

Bruce A update

Unit 3 was safely removed from service today due to an issue with the excitation system.

Operations continues to investigate.

 

April 15, 2015

Bruce B update

Units 5, 7 and 8 joined Unit 6 in being safely removed from service today as Bruce B will now begin its Vacuum Building Outage (VBO), as part of its maintenance requirements with the Canadian Nuclear Safety Commission.

All four unit will remain offline while the VBO is completed. Hundreds of temporary workers have been brought in to safely and efficiently complete the outage, which is a $130 million investment by the company.

 

April 8, 2015

Bruce B update

Unit 6 was safely removed from service today to begin the planned maintenance outage.

The outage is planned to last over 80 days.

This also marks the beginning of the most complex outage evolution at Bruce B since 2004. In a week’s time, the three remaining Bruce B units will be shut down to facilitate the Station Containment Outage and the 29 day Vacuum Building Outage.

These outages represent an investment of more than $130 million dollars and an impact to the business plan of more than $350 million dollars. This investment is being made so that our equipment can run safely and reliably through their next operational cycle.

 

March 30 2015

Bruce B update

Unit 5 was synchronized to the grid today after a small hydrogen leak forced the unit offline on March 27.

The unit is expected to remain online until the Vacuum Building Outage begins in mid-April.

 

March 27 2015

Bruce B update

Unit 5 was safely removed from service today to address a small leak in a generator.

The unit is expected to return to service in the coming days.

 

March 13 2015

Bruce A update

Unit 2 was synchronized to the grid today after being safely removed from service to assist Hydro One with upgrades to its switchyard.

The unit had been offline for one day.

 

March 12 2015

Bruce A update

Unit 2 was removed from service so upgrades could be made to the Hydro One switchyard.

The outage is expected to be of short duration.

 

March 9 2015

Bruce A update

Unit 1 was returned to service ahead of schedule today, after a succesful planned maintenance outage on the unit.

Hundreds of work programs were executed safely by our professional staff and contractors. To learn more about the Unit 1 outage, click here.

 

March 2 2015

Bruce B update

Unit 5 was synchronized to the grid today after a short duration outage.

The unit was safely returned to service by our highly professional Operations staff.

 

Feb. 28 2015

Bruce B update

Unit 5 was safely removed from service. The cause of the forced outage is unknown at this time.

 

30 Jan 2015

Bruce A update

Unit 1 was removed from service for its planned maintenance outage. The unit set a post-Restart record of 99 days of consecutive production.

The outage is scheduled to continue into March.

 

25 Jan 2015

Bruce A update

Unit 3 was returned to service after a short-duration planned maintenance outage.

All four Bruce A units had run consecutively for 91 days before Unit 3 was safely removed from service.

 

22 Jan 2015

Bruce A update

Unit 3 was removed from service today for a planed maintenance outage.

The planned outage ends a post-1995 record run for all four units at Bruce A at 91 days – over triple the previous four-unit record of 28 days.

 

5 Jan 2015

Bruce B update

Unit 7 was returned to Ontario’s grid today after a short maintenance outage.

All eight Bruce Power units are producing 30 per cent of Ontario’s electricity, with zero carbon emissions.

 

28 Dec 2014

Bruce B update

Unit 7 was safely removed from service today to complete maintenance on Shutdown System 1.

It is expected to be back in service early in 2015.

 

27 Dec 2014

Bruce B update

Unit 6 was returned to service after a two-day, surplus baseload generation outage.

All eight Bruce Power units are currently online, supplying over 30 per cent of Ontario’s energy.

 

25 Dec 2014

Bruce B update

Unit 6 was removed from service today due to surplus baseload generation.

The unit had been on one of the longest runs in its history when the IESO requested it be removed from service.

 

23 Oct 2014

Bruce A update

Unit 1 was synchronized to the grid after a short maintenance outage.

All four Bruce A units are currently supplying about 15 per cent of Ontario’s power.

 

20 Oct 2014

Bruce A update

Unit 1 was removed from service today to address a turbine issue on the non-nuclear side of the plant.

The outage is expected to be offline for about three days.

 

18 Oct 2014

Bruce A update

Unit 1 was returned to service at 4 p.m. today after a seven-day maintenance outage.

 

15 Oct 2014

Bruce A update

Unit 3 synchronized to the grid today after a four-day forced outage so staff could repair a service water pipe issue.

 

12 Oct 2014

Bruce A update

Unit 2 was removed from service today after an issue was discovered during a regularly planned maintenance test on Shutdown System 2.

It is currently unknown how long the unit will remain offline.

 

11 Oct 2014

Bruce A update

Unit 3 was removed from service after a minor issue was found with a service water pipe in the Condenser Cooling Water system.

The outage is expected to last a few days.

 

3 Oct 2014

Bruce B update

Unit 5 was removed from service today to begin a planned, 50-day maintenance outage on the unit, which ended a continuous run of 516 days.

To learn more about the Unit 5 outage, read our news release.

 

22 Sept 2014

Bruce A update

Unit 2 was removed from service today due to issues with the Hydro One switchyard. The situation was quickly rectified and the unit was returned to service hours later.

 

15 Sept 2014

Bruce A update

Unit 2 was returned to service today, following issues with the Hydro One switchyard.

 

9 Sept 2014

Bruce A update

Unit 2 was removed from service today due to issues with the Hydro One switchyard.

The outage is expected to last about a week.

 

28 Aug 2014

Bruce A update

Unit 2 was returned to service today, after issues with the Hydro One switchyard were rectified.

 

26 Aug 2014

Bruce A update

Unit 2 was removed from service today due to issues with the Hydro One switchyard.

The outage is expected to last a couple of days.

 

25 Aug 2014

Bruce A update

Unit 2 was returned to service today.

 

17 Aug 2014

Bruce A update

Unit 2 was removed from service today due to an issue with the heat transport pump motors.

The unit is expected to return to service within a week.

 

1 Aug 2014

Bruce A update

Unit 3 was returned to service after a planned maintenance outage, which began in April.

 

29 July 2014

Bruce A update

Unit 2 was returned to service after a disruption in the Hydro One switchyard caused the unit to be removed from service.

 

26 July 2014

Bruce A update

Unit 2 was removed from service at the request of the electrical grid operator due to the failure of a circuit breaker in the 230kV switchyard, which is operated by Hydro One.

The outage is expected to last about two days.

 

18 July 2014

Bruce A update

Unit 4 was returned to service today after a 22-day outage to address a breaker issue in the switchyard.

Seven of eight Bruce Power units are providing about 30 per cent of Ontario’s energy during the summer months, with Unit 3 poised to return to service after a planned maintenance outage in the coming days.

 

27 June 2014

Bruce A update

Unit 4 was removed from service today to address an issue breaker issue in the switchyard.

A maintenance outage will be required.

 

24 June 2014

Bruce A update

Unit 1 was returned to service this afternoon after a short outage to address a generator issue on the non-nuclear side of the plant.

Seven of our eight units are currently providing carbon-free electricity to Ontario residents and businesses, while Unit 3 is expected to synchronize to the grid in the coming days.

 

13 June 2014

Bruce A update

Unit 1 was removed from service today to address a minor issue with the generator’s hydrogen system, on the non-nuclear side of the plant.

The outage is expected to last about 10 days.

 

19 May 2014

Bruce B update

Unit 6 was returned to service today after a short duration maintenance outage.

Units 1, 2 and 4-8 are currently providing about 30 per cent of Ontario’s energy, while Unit 3 continues its planned maintenance outage.

 

11 May 2014

Bruce B update

Unit 6 was removed from service tonight for a planned maintenance outage.

Prior to the outage, Unit 6 had spent over one calendar year online, helping Bruce B generate about 15 per cent of Ontario’s eneryg.

 

7 May 2014

Bruce A update

Unit 2 was returned to service this afternoon after a 26-day outage to make repairs to the turbine generator, on the non-nuclear side of the plant.

It joins Units 1, 4 and 5-8 in providing over 30 per cent of Ontario’s electricity, while generating zero carbon emissions. Unit 3 is currently undergoing a planned maintenance outage.

 

17 April 2014

Bruce B update

Unit 7 was safely returned to service today after a two-month planned maintenance outage.

The four Bruce B units are currently providing about 15 per cent of Ontario’s power.

 

12 April 2014

Bruce A update

Unit 2 was safely removed from service this morning to allow crews to make repairs to the turbine generator on the non-nuclear side of the station.

Maintenance is currently underway and the unit is expected to be back in service later this week. The generator converts mechanical energy into electrical energy.

 

7 April 2014

Bruce A update

Unit 3 was safely removed from service today as it begins a planned maintenance outage, which will see about $90 million invested in the unit. It is expected to last about three months.

Learn more about the outage here.

 

18 March 2014

Bruce A update

Unit 1 was returned to service today after a short-duration forced outage was required to fix an excitation issue.

Our Engineering and Maintenance teams conducted extensive hardware and software tests on the exciter system, while our Operations staff safely brought the unit back into service.

 

13 March 2014

Bruce A update

Unit 1 at Bruce A was removed from service at 11:30 p.m.

An investigation is currently underway to determine the cause.

 

10 March 2014

Bruce A update

Bruce A’s Unit 2 was returned to service after a month-long outage to make repairs on the unit’s generator, which is located on the non-nuclear side of the plant.

Bruce Power now has seven of its eight units generating electricity, while Unit 7 undergoes a planned maintenance outage.

 

11 February 2014

Bruce A update

On Saturday, Feb. 8, 2014, Unit 2 at Bruce A was removed from service to allow crews to perform maintenance on the unit’s generator which is located on the non-nuclear side of the plant. The generator converts mechanical energy into electrical energy and crews are performing maintenance on the generator’s cooling system. The 750 megawatt unit is expected to return to service later this month.

Bruce B update

Unit 7 at Bruce B was safely shut down on Monday, Feb. 10 to begin a planned maintenance outage that will last several weeks. Approximately 700 temporary workers will work alongside Bruce Power employees to complete 16,500 tasks during the investment, maintenance and inspection program which will set the unit up for yet another successful operating cycle.

 

31 January 2014

Bruce A update

On Jan. 31, Unit 1 at Bruce A was proactively taken offline in order to isolate and address a mineral oil leak that was detected in a transformer’s heat exchanger. The heat exchanger uses water to cool oil in the transformer.

A minor amount of mineral oil mixed with water was released outside the station.

Upon discovery, the leak was stopped and absorbent booms were set up across the discharge channel as a precaution.

A collection system has been set up to collect any remaining oil from the transformer.

There is no visible oil sheen at the intake or discharge channels and no oil was detected during sampling and analysis of water from the discharge channel after the event.

All regulatory reporting requirements have been met and Bruce Power checked its other units to ensure this was an isolated incident.

Further investigations are ongoing to determine the duration and amount of the release and we will update as more information becomes available.

The oil is biodegradable, has very low levels of toxicity and contains no PCBs or radioactive material. It breaks down naturally over time in sunlight and exposure to various weather conditions.

 

13 January 2014

Bruce A update

Unit 3 was safely returned to service today after a short three-day outage to make repairs to a steam transport line.

 

10 January 2014

Bruce A update

Unit 3 was removed from service today to repair a steam transport line that had recently been monitored by station staff. The Operations crew at Bruce A exhibited the proper Safety First decision-making by shutting the unit down when conditions changed.

The unit is not expected to keep be offline more than a few days.

 

5 January 2014

Bruce A update

Unit 1 was removed from service to perform maintenance on a Station Shutdown System. The outage is expected to last about 18 days.

 

30 December 2013

Bruce A update

Unit 2 was returned to service today after a five-day outage to repair a steam transport system.

 

23 December 2013

Bruce A update

Unit 2 was removed from service today to repair a steam transport system.

The unit is not expected to be offline more than a week.

 

30 November 2013

Bruce A update

Unit 2 returned to service today after a two-day outage to repair an issue with the liquid zone control system.

 

28 November 2013

Bruce A update

Unit 2 was removed from service today due to a liquid zone control issue. Investigation is currently underway as to the cause of the forced outage.

 

23 November 2013

Bruce B update

Unit 8 was briefly removed from service today due to an issue with moisture separating equipment. This issue was discovered and resolved quickly and the unit resynchronized to Ontario’s electricity grid eight hours later.

 

22 November 2013

Bruce A update

Unit 4 was returned to service today after a three-day outage to conduct maintenance to the fuelling machines.

 

21 November 2013

Bruce B update

Unit 8 was forced from service today due to an issue in the feedwater system which heats up water before it gets to the steam generators.

The unit was safely returned to Ontario’s electricity grid 10 hours later.

 

20 November 2013

Bruce A update

Unit 4 was forced from service today to begin repairs to the bridge brakes on the fuelling machines. Operations crews performed the manoeuvre flawlessly and maintenance crews are now completing the repairs.

Expected duration is three days.

 

1 November 2013

Bruce A update

Unit 2 was returned to service today, after a two-day forced outage caused by a turbine trip during a valve test.

 

30 October 2013

Bruce A update

Unit 2 was safely removed from service today during regular testing activities.

Bruce Power’s Operations crews managed the situation professionally, leveraging the Human Performance tools and training experiences.

 

27 October 2013

Bruce A update

Unit 2 was returned to service today after a six-day outage to address Hydro One switchyard issues.

 

26 October 2013

Bruce B update

Unit 8 was resynchronized the Ontario’s electricity grid after an eight-day outage to conduct maintenance.

 

21 October 2013

Bruce A update

Unit 2 was safely removed from service today at the request of the Independent Electricity System Operator (IESO) due to an issue in the Bruce A switchyard, which is operated by Hydro One.

Hydro One is currently assessing the situation and the unit will be down for a minimum of three days.

 

19 October 2013

Bruce B update

Unit 8 was removed from service tonight for a maintenance outage to locate and repair a heat transport leak.

The unit is expected to be back in service in about a week.

 

12 October 2013

Bruce A update

Unit 3 returned to service this afternoon after a short-duration maintenance outage completed repairs to a pump in the primary heat transport system.

Staff are to be commended for their commitment to safety during this time.

 

8 October 2013

Bruce A update

Unit 3 was safely removed from service today to complete repairs to the primary heat transport system.

The unit is expected to return to service in a few days.

 

6 October 2013

Bruce A update

Unit 4 returned to service on Oct. 6, after a short maintenance outage.

All eight Bruce Power units are currently providing over 38 per cent of Ontario electricity.

 

4 October 2013

Bruce A update

Unit 4 at Bruce A was shut down on Friday, Oct. 4, to allow crews to perform maintenance on a steam system pump.

The steam system transfers heat in the form of steam from the nuclear side of the plant to the non-nuclear side and the steam drives the turbine to create electricity.

This is expected to be a short-duration outage.

 

1 July 2013

Unit 8 returns to service

Unit 8 returned to service after a short maintenance outage.

All eight Bruce Power units are providing about a third of Ontario’s energy as we enter the hot summer months.

 

28 June 2013

Bruce B Update

Unit 8 was removed from service today so maintenance could be performed on the turbine generator system.

It is expected to return to service in early-July.

 

21 June 2013

Bruce B Update

During normal operations on Unit 5 at Bruce B on June 21, a small instrument line off a pressurized water system developed a leak and as a result some water used in this system was released inside the plant.

The issue was immediately isolated and the leak stopped. The water has been recovered. The company took all appropriate steps to address this issue and there were no injuries, elevated exposures or environmental impacts.

 

21 June 2013

Unit 8 returns to service after planned maintenance outage

TIVERTON, ON – June 21, 2013 – An impressive, $250 million investment in planned maintenance outages at Bruce B in 2013 concluded with the return to service of Unit 8 today.

Three back-to-back-to-back outages in the first half of the year – in Units 5, 6 and 8 – will allow Bruce B to provide about 15 per cent of Ontario’s electricity during the summer months, when demand in the province is high. With all four units at Bruce A revitalized and Bruce B’s units operating efficiently, Bruce Power provides 6,300 megawatts of clean, safe and low-cost power from its eight-unit site, the world’s largest operating facility. That’s about 30 per cent of Ontario’s power.

“When we began our aggressive 2013 outage program on Jan. 4, it brought an end to a record, 129-day run of continuous operation for all four units at Bruce B,” said Len Clewett, Executive Vice President and Chief Nuclear Officer. “By investing heavily in maintenance outages, we ensure our units are able to perform at their peak levels when the need for power is greatest. As we enter the hot summer months, Bruce Power is poised to help fulfil the energy demand in the province.”

The planned maintenance outages were completed on time and budget, Clewett added.

 

20 June 2013

Bruce A update

Unit 3 returned to service on June 20 following an outage that began on May 24  due to surplus baseload generation in the province.

When Unit 8 returns from its planned maintenance outage tomorrow, Bruce Power’s eight units will be poised to provide about 30 per cent of Ontario’s energy for the hot summer months.

 

11 June 2013

Bruce B update

On June 8, during Unit 8 outage activities, a small amount (about four tablespoons) of water, containing trace amounts of hydrazine, leaked into a floor drain. Hydrazine is a non-radioactive chemical used to reduce corrosion.

Investigation has concluded none of this water was released to the environment or Lake Huron.

 

25 April 2013

Boiler steam relief valve testing today

Bruce Power will be testing its boiler steam relief valves at Bruce B today. The tests can last between one minute and half an hour and are expected to be complete by about 6 p.m.

Neighbours of the Bruce site may notice some steam coming from Bruce B, and a low rumbling sound resembling distant rolling thunder may be audible. These are normal activities and are of no cause for concern to the public.

We apologize in advance for any inconvenience the testing may cause our neighbours.

 

22 April 2013

Unit 6 returns to service

Unit 6 returned to service today after a planned maintenance outage.

With Unit 6 now providing clean, reliable, low-cost electricity to the province, all eight units on the Bruce site are now in operation for the first time in about two decades.

 

16 April 2013

Unit 4 returns to service

On April 13, Bruce Power returned Unit 4 to service after a planned maintenance outage.

It’s the first time all four units at Bruce A have generated electricity in about two decades. 

 

2 April 2013

Unit 7 update

Unit 7 was taken off-line for about two hours on March 28 to conduct maintenance on the non-nuclear side of the plant.

Unit 7 was returned to service around 7 p.m. the same day.

 

4 March 2013

Unit 2 returns to service

Unit 2 returned to service on March 4 after an eight-day, forced maintenance outage.

Prior to the outage, Unit 2 experienced an outstanding 129-day continuous run since being returned to service for the first time since 1995.

Units 1-3, 5, 7 and 8 are operating at full power, while Units 4 and 6 continue their planned maintenance outages.

 

24 Feb 2013

Unit 2 update

Unit 2 was removed from service for a short maintenance outage on Feb. 24.

Units 1, 3, 5, 7 and 8 continue to operate at full power, while planned maintenance outages on Units 4 and 6 continue.

 

12 Feb 2013

Unit 8 returns to service

Bruce Power’s Unit 8 was safely synchronized to the electrical power grid on Monday, Feb. 11, successfully completing an eight-day forced outage.

The teamwork exhibited in the performance of all necessary work was simply exemplary.

Unit 4 continues to advance its planned maintenance outage program, while Units 1-3 and 5-8 are providing nearly 30 per cent of Ontario’s power on Tuesday morning.

 

5 Feb 2013

Unit 8 update

Unit 8 was removed from service on the weekend, as a result of issues encountered with electrical equipment being returned to service.

As a result of this, some loss of power occurred, however, back-up power provided support as per design.

All power has now been restored and Bruce Power will determine a plan to make the necessary repairs to return the unit to service.

 

7 Jan 2013

Planned maintenance outage begins on Unit 5

Unit 5 was safely removed from service on Friday, Jan. 5, for a planned maintenance outage.

The outage is planned to run into next month.

Currently, Unit 4 is also on a planned maintenance outage, while Units 1-3 and 6-8 are all operating at full power.

 

31 Dec 2012

Unit 1 returns to service

Unit 1 was returned to service on Saturday, Dec. 30, after being safely taken offline a day earlier after a month-long outage.

Unit 4 remains in a planned maintenance outage, while all Bruce B units are operating at full power.

 

29 Dec 2012

Unit 1 offline

Unit 1 was taken offline Saturday morning, after returning from a month-long outage yesterday.

The cause and duration is currently being investigated.

 

28 Dec 2012

Unit 1 returned to service

Unit 1 was resynchronized to Ontario’s electricity grid on Dec. 28 at 11:14 a.m., after a month-long planned maintenance outage.

 

17 Dec 2012

Bruce B Update

Staff took immediate action on Dec. 12 when a leak was discovered in an underground pipe that supplies back-up conventional diesel fuel to Bruce B. The leak was stopped and all the appropriate notifications were made. Consistent with past practice, Ministry of Environment and Technical Standards and Safety Authority have also been onsite to monitor activities. Bruce Power continues to monitor the shoreline with the support of external contractors with expertise in this area and is taking all action necessary to address any environmental impacts from this release. Cleanup activities are underway at Bruce B after heavy rains washed a small amount of diesel fuel to a localized area of the Lake Huron shoreline over the weekend.

 

29 Nov 2012

Unit 1 update

Unit 1 was removed from service for a short-duration, planned maintenance outage on Nov. 28.

The unit produced electricity for the first time in 15 years on Sept. 19 after a first-of-a-kind refurbishment project.

 

19 Nov 2012

Unit 3 update

Unit 3 was taken offline Saturday, Nov. 17, for a short unplanned maintenance outage.

It is expected to return to service shortly.

 

14 Nov 2012

Unit 1 returns from short outage

Bruce Power’s Unit 1 returned from a short outage around 1o p.m. Tuesday night.

The unit was offline over the weekend.

 

22 Oct 2012

Unit 4 outage update

Unit 4 is currently undergoing a planned outage to carry-out maintenance and inspections on a number of station systems.

A number of outage activities include reactor inspection work, and the company has deployed a number of radiological monitoring programs to protect worker health and safety during the execution of this work. These monitoring programs are designed to ensure worker activities are carried out in a safe manner with radiological levels kept below regulatory limits and better than Bruce Power targets, which the company sets at an even lower level than our regulator requires.

As these activities occur, personnel are dedicated to monitor this work in parallel with those who are executing the work. When carrying out inspection activities, established monitoring systems detected higher than planned levels for one activity. Each activity is planned with specific limits to ensure radiological levels remain below regulatory and internal targets.

As a precautionary measure, given the initial results of this monitoring, the company stopped some work on Friday to allow for additional testing. The results confirmed it was safe to proceed and work is now back underway.

No regulatory or internal limits were exceeded.