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-Turbine Generator Synced to the Irish Electrical Grid-

On 22 August, the Dublin Waste to Energy Facility’s turbine generator was successfully connected and synchronized to the electrical grid.

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Facility in the News

An ‘under the hood’ look at Dublin’s First ‘waste-to-energy’ plant

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Today with Sean O'Rourke - Interview with Covanta MD John Daly

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First look inside the Poolbeg incinerator

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Covanta periodically produces and distributes newsletters to inform our neighbours about recent works at the facility.  Download the latest newsletter below. 


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On 22 August, the Dublin Waste to Energy Facility’s turbine generator was successfully connected and synchronized to the electrical grid. Initially, the turbine generator will operate at a reduced capacity, generating enough electricity to power plant operations while further testing is completed. At full output, the facility will generate approximately 60 megawatts of electricity – enough to power 80,000 area homes. Additional commissioning and testing of the facility continues to progress on schedule.

Dublin Waste to Energy will shortly commence waste firing on Line 2. This is scheduled to take place over this coming weekend. Further updates will be available in due course.

Waste processing has resumed today at the Dublin Waste to Energy Facility on Boiler 1. Further updates will be provided as testing and commissioning progresses.

Following a detailed review of safety procedures and operations at the Dublin Waste to Energy Facility, currently being commissioned by Covanta and its construction and commissioning contractor, Hitachi Zosen Inova AG (HZI), the Health and Safety Authority (HSA) has allowed the recommencement of facility testing and operations.

The review by the independent State body arose after a limited release of lime-ash in an internal room in the Poolbeg facility (on June 7th). Covanta’s investigation has concluded that the release was due to an incorrectly fitted hopper door gasket by HZI. It has been confirmed, by the Environmental Protection Agency (EPA) that there was no danger to the public arising from this incident.

Covanta wishes to re-state its absolute commitment to the safety of our workers, our contractors, and the community, and will continue to work with our neighbours and the appropriate authorities to demonstrate this enduring commitment.

After a thorough review of operating procedures related to environmental compliance, the EPA has also allowed the recommencement of hot commissioning and waste processing is anticipated to restart in the coming days.

Update 3

13 June

Covanta and our contractor responsible for construction and commissioning, Hitachi Zosen Inova, are co-operating fully with the Health and Safety Authority and other appropriate authorities to establish the factors that led to the incident at the Dublin Waste to Energy Facility on June 7th.

After investigation, it has been determined that a gasket was installed incorrectly on doors leading to the fabric filter baghouse. This led to the release of lime-ash through a small opening in the door seals which was contained inside the flue gas treatment area. The EPA has confirmed that there was no environmental impact and that there is no danger to the public as a result of this event.

At the time of the incident, there were a number of workers in an adjacent area. As a precaution, since this was a health and safety incident, contractors that were working in the area were driven to a nearby hospital for medical evaluation and they have all been released.

Covanta is committed to carry out any steps necessary that will demonstrate to the public and the appropriate authorities that the facility is safe. We are actively working to prevent an incident like this from occurring again. The safety of our employees and contractors on site is of paramount importance to Covanta.

Meanwhile, a licensed third party has completed a clean-up of the affected area and only general construction activity will proceed on the site at this time.

Update 2

9 June

Late on Wednesday night a small amount of lime-ash was inadvertently released inside the flue gas treatment area during the commissioning and testing of the Dublin Waste to Energy facility.

At the time of the incident, there were a number of workers in an adjacent area. As a precaution, they were sent to a nearby hospital for medical evaluation. The majority were released immediately after evaluation while two others underwent further observation and have since been released.

Combustion Unit No. 1, which was operating at the time, was shut down immediately. The lime was contained within the building and did not escape into the environment and the incident had no impact whatsoever outside the plant. The EPA has confirmed that there is no danger to the public.

We continue to investigate this matter in full co-operation with the appropriate authorities and will provide further updates in the coming days.

Update 1

June 8

Late on Wednesday night a small amount of lime-ash was inadvertently released inside the flue gas treatment area during the commissioning and testing of the Dublin Waste to Energy plant at Ringsend.

At the time, there were a number of workers in an adjacent area. As a precaution, eleven workers were sent to St. Vincent’s Hospital nearby for medical evaluation. Two were detained overnight.

Combustion Unit No. 1, which was operating at the time, was shut down in an orderly and controlled manner. The lime was contained within the building and did not escape into the environment and the incident had no impact whatsoever outside the plant.

Both the EPA and the Health & Safety Authority were notified of the incident, and the company is co-operating fully with them.

The safety of our employees and contractors is of utmost importance to Covanta and we are investigating the incident thoroughly.

We are investigating to understand what exactly occurred, but it appears from preliminary investigation that the release of the lime was due to a problem with a door seal in the fabric filter baghouse.

Late on Thursday 1 June 2017, the Dublin Waste to Energy facility reached the important “first fire” milestone, meaning that waste was treated for the first time. At this time, waste is only being processed in Boiler #1, with Boiler #2 to follow shortly. During this initial phase of operation the plant will start-up and shut-down on several occasions as system optimization tests are carried out. This is normal during the start-up of a plant of this nature. The plant will continue to take waste for treatment at a steady rate during this period. Over the coming months, waste volumes accepted will be increased as the facility reaches optimal performance and is synchronized to the electrical grid. Full commercial operation is expected to be achieved in the autumn of 2017.

Dublin Waste to Energy Ltd. will resume waste acceptance on Friday 26th May 2017, with first fire on waste planned in the coming days. Should you have any queries or concerns please email ENVDublin@covanta.com or call (01) 603 2100 (Dial 0 to speak with a staff member).

Steam blowing is now complete and the relevant equipment to enable part of the hot commissioning has been dismantled. Hot commissioning will continue this week using oil only to fire the burners. This will happen later today and steam will be visible emanating from the start-up vent on the roof. This will continue into Thursday and Friday. No waste will be treated this week. A further update will be posted closer to first fire of waste.

The steam blows referred to in the previous progress update have now been completed. During this part of the commissioning program only fuel oil was used for the heating of the boilers. No waste has been treated to-date. The small quantities of waste received at the site has been used for the purpose of commissioning the weighbridge and the cranes. Dublin Waste to Energy will send out a further information bulletin closer to when first fire of waste will commence.

For all enquiries concerning the plant, please call 01-6032100 (select option 0) or email ENVDublin@covanta.com

Dublin Waste to Energy Ltd would like to notify members of the public of our hot commissioning works over the coming weeks.

The works over the coming days and weeks will be as follows:

  • Dry out of Refractory bricks on the boilers using temporary oil burners. This will continue for approximately 48 hours after commencement of the process during which time steam will be emitted from the facility.
  • Following the boil outs the boiler tubes and piping will need to be cleaned out using steam. Steam will be visible from the facility and there may also be some noise associated with this operation.

During these works no waste will be delivered and/or treated at the plant.We have now put in place an email address for the public to communicate directly with the plant ENVDublin@covanta.com.