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The focus in September has been the planned maintenance

Fact sheet September 2022 
Average wind speed (m/s)ca. 7.8 m/s
Production (GWh)ca. 23 GWh
Safety and environmental incidents0

Some content

In September, the production was mainly affected by planned outage (overlaying grid), and the broken blade at BJV13.

 

BJV13

  • The safety perimeter of 250m applies, and a temporary fence has been installed.
  • The clean up is prepared. The start date is not known yet.
  • The root cause analysis has started, and the conclusion still pending
  • The blade exchange works have started

 

The focus in September has been the planned maintenance, and preparation for the winter season

When there is planned maintenance, road blocks are installed.

Roads have been inspected, and will be made ready for the winter (snow poles mainly)

Some locals even joined the visit.

 

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Important information

Late in the evening on Thursday the 21st of July, an accident occurred in the wind farm when a blade broke on turbine Björkvattnet 13 (BJV13). No people were injured in the accident. The root cause analysis has been initiated together with the supplier of the turbines to be able to determine the reason for the failure.

We have set a temporary safety distance around the affected turbine (Björkvattnet 13 – BJV13) of 250 meters. The road leading up to that specific turbine has been blocked temporarily. We apologize for any inconvenience that this might cause.

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October 2021 Update

During October works continued to carry out any snag items, which are remedial works or items needing attention that were identified when the turbines are fully commissioned and inspected inside and out.

 

Re-instatement works continued at various locations around the site, and this month saw the completion of the removal of the stoned area, which had been used for storage of materials. Maintenance of the site roads continued with minor repairs being actioned as required.  De-mobilisation work continued with the site being cleared of materials and any remaining debris.

 

To summarise the status, main Installation is complete on all thirty-three (33) turbines; commissioning works have been completed on all thirty-three (33) turbines; and all thirty-three (33) turbines have completed their reliability run, the 8-day performance test and final stage before the turbine is considered operational. The Centre and South-East areas of the wind farm have achieved operational completion, which equates to two of the five sections of the wind farm.

 

November will see a continuation of re-instatement works and a continuation of remedial works once the required materials are delivered to site. The certification required for each turbine is targeted by the end of the year – which will see the wind farm’s remaining sections achieve operational completion.

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September 2021 Update

September saw the last turbine go through the final commissioning inspections before progressing to the 24hour check, and then successfully completing its reliability run which is an eight-day performance test.  This month work continued to carry out any snag items, which are remedial works or items needing attention that were identified when the turbines are fully commissioned and inspected inside and out.

 

Re-instatement works continued at various locations around the site, which included the dismantling and removal of the stoned area which had been used for storage of materials, and maintenance of the site roads.  De-mobilisation work also continued with areas being cleared of materials and containers from the offices were removed from site.

 

This month saw a further one (1) turbine commissioned, and one (1) complete their reliability run.

 

To summarise the status, main Installation is complete on all thirty-three (33) turbines; commissioning works have been completed on thirty-three (33) turbines; and thirty-three (33) turbines have completed their reliability run, the 8-day performance test and final stage before the turbine is considered operational. The Centre and South-East areas of the wind farm have achieved operational completion, which equates to two of the five sections of the wind farm.

 

September will see a continuation of de-mobilisation and re-instatement works and a continuation of remedial works once the required materials are delivered to site.

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Important information

Late in the evening on Tuesday the 31st of August, an accident occurred in the wind farm when a blade broke on turbine Björkvattnet 20 (BJV20). No people were injured in the accident. The root cause analysis has been initiated together with the supplier of the turbines to be able to determine the reason for the failure.

 

We have set a temporary safety distance around the affected turbine (Björkvattnet 20 – BJV20) of 250 meters. The road leading up to that specific turbine has been blocked temporarily. Please contact Jonathan Voisin on +46 733 24 38 18 if you have any questions. We apologize for any inconvenience that this might cause.

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July 2021 Update

The summer season is now underway at Björkvattnet this month.  It has brought fair weather and the holiday period in Sweden. A new single blade lifting device arrived on site at the beginning of July, and the final blades were successfully installed on the last turbine.  This concluded the main installation works for all thirty-three (33) turbines in the wind farm.

The final five (5) customer walkdowns were carried out this month, which sees the turbines inspected inside and out.  Any remedial works identified or items requiring attention are flagged up to the Contractor as ‘snags’ to be actioned in the coming weeks.

This month saw the commencement of the re-instatement works, which includes the dismantling and removal of the stoned area which had been used for storage of materials.  Works were carried out this month to prepare the turbines for a planned grid outage which started on the 27/07/21.  During the period of the grid outage, no power will be imported or exported, so 24hour tests and eight-day performance tests cannot be carried out on the turbines during this period.  The turbines were placed in a safe position prior to the outage and will remain like this for the duration, which is expected to finish 07/08/21.

 

This month saw a further one (1) turbine commissioned, and four (4) complete their reliability run.

 

To summarise the status, main Installation is complete on all thirty-three (33) turbines; commissioning works have been completed on thirty-one (31) turbines; and thirty-one (31) turbines have completed their reliability run, the 8-day performance test and final stage before the turbine is considered operational. The Centre and South-East areas of the wind farm have achieved operational completion, which equates to two of the five sections of the wind farm.

 

August will see a continuation of internal works, commissioning, and test runs as well as a continuation of the re-instatement works.

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June 2021 Update

June saw the last of the heavy fall weight testing which had been carried out throughout the thaw period.  The test results were used to assess the bearing capacity of the ground to ensure heavy machinery could continue to operate safely.  The last tests on the crane hardstand area in June, showed that all frozen water was gone from the top two metres of ground.

 

As works are coming to an end and the construction phase of the project is in its latter stage, Björkvattnet welcomed representatives from The County Administrative Board (Länsstyrelsen) who visited site in June to carry out a routine inspection.  The site visit was very well received and positive, and Björkvattnet will continue to work closely with Länsstyrelsen until the project is fully completed.

 

The de-mobilisation operation continued this month with materials, machinery and storage containers being removed from site.  The site compound and offices are also being reduced to reflect the smaller team size as less people are present on site each day.  Only the blades remain to be installed for the final turbine to be fully erected and this will be carried out once a newly manufactured single-blade lifting device is delivered to site.

 

This month saw a further two (2) turbines commissioned, and two (2) complete their reliability run.

 

To summarise the status, main Installation is complete on thirty (32) turbines; commissioning works have been completed on thirty (30) turbines; and twenty seven (27) turbines have completed their reliability run, the 8-day performance test and final stage before the turbine is considered operational. The Centre and South-East areas of the wind farm have achieved operational completion, which equates to two of the five sections of the wind farm.

 

July will see a continuation of internal works, commissioning, test runs, and installation of the blades for the last turbine.

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May 2021 Update

The thaw period has finally passed at Björkvattnet. The ground conditions were being closely monitored and inspected during the thaw period to ensure heavy machinery could continue to operate safely.  The geotechnical engineers have been monitoring the ground temperature at crane hardstands with in-ground measurement rods and the latest results of the heavy fall weight testing, supplemented by visual inspection, shows the thaw is now complete and bearing capacity is suitable.

 

The team at Björkvattnet have been busy tidying up the site this month, removing materials and machinery that are no longer required on site.  As there is now only one turbine that requires installation, two of the three main cranes (used to erect the turbines) have been dismantled and removed from site, and most of the installation team have de-mobilised from site and moved onto other projects.

 

This month saw a further two (2) turbines installed, four (4) turbines commissioned, and seven (7) complete their reliability run.

 

To summarise the status, Main Installation is complete on thirty (32) turbines; commissioning works have been completed on twenty eight (28) turbines; and twenty five (25) turbines have completed their reliability run, the 8-day performance test and final stage before the turbine is considered operational. The Centre and South East areas of the wind farm have achieved operational completion, which equates to two of the five sections of the wind farm.

 

June will see a continuation of internal works, commissioning, test runs, and installation of the final components for the last turbine. Also, operational completion of the South Centre and South West sections are expected to conclude. June should also see final civils works to leave the wind farm in its finished state, including the removal and reinstatement of the on-site storage area.

 

 

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April 2021 Update

Spring has arrived at Björkvattnet, the weather has been milder throughout April and the snow is beginning to recede.  As breeding season is now underway, the local wildlife has been spotted at the wind farm with an abundance of grouse and capercaillie roaming throughout the site.  The better weather, although positive in many aspects, also brings considerable risk when using the heavy machinery used to lift and install the turbines.  The ground conditions are being closely monitored and inspected each week by the geotechnical engineering team to ensure that work continues safely.

 

As installation works near their end at Björkvattnet, this month has seen the installation teams demobilise from site and be redeployed onto other projects.  One of the main cranes (used to erect the turbines) has left site and another is de-rigged and dismantled, ready to be taken away from site.  This leaves only one main crane in place ready to carry out the installation of the final turbines.

 

This month saw a further four (4) turbines installed, six (6) turbines commissioned, and five (5) complete their reliability run.  Operational completion was achieved for the Centre and South East sections.

 

To summarise the status, Main Installation is complete on thirty (30) turbines; commissioning works have been completed on twenty four (24) turbines by the end of the month; and eighteen (18) turbines have completed their reliability run, the 8-day performance test and final stage before the turbine is considered operational.

May will see a continuation of internal works, commissioning, test runs, and the final turbine erections. Also, operational completion of the South Centre and South West sections

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March 2021 Update

Throughout the month of March, we have seen signs of the arrival of Spring. Weather is always important during the construction of a wind farm, and although it might be obvious that wind and snow can impact construction, warming temperatures also play a role in climates similar to that of Björkvattnet. The heavy transport and lifting equipment must have a solid foundation to work upon, and as the frost begins to thaw, the ground’s capacity to withstand construction loads could potentially be compromised. To ensure that we continue to operate safely, load bearing sections of crane hardstands (where the cranes lift and install the turbine components) are being continually monitored by a third-party geotechnical engineering team. This month saw a further three (3) turbine installed, four (4) turbines commissioned, and three (3) complete their reliability run.

 

To summarise the status, Main Installation is complete on twenty-six (26) turbines; commissioning works have been completed on eighteen (18) turbines by the end of the month; and thirteen (13) turbines have completed their reliability run, the 8-day performance test and final stage before the turbine is considered operational.

 

April will see a continuation of turbine erection, internal works, commissioning and test runs. Also, operational completion of the first section.