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Kaitaa metro station to test standby generator

Operational tests will be conducted on the Kaitaa metro station’s standby generator on 30 March, between 8 am and 4 pm. The tests may cause odour nuisance and possibly some noise in the surrounding environment.

The tests will ensure that the standby generator functions as it should. Read more about the ongoing testing phase and the progress of construction: Construction | Länsimetro (lansimetro.fi)

Every new metro station, as well as the Sammalvuori depot, will be equipped with a standby generator. A total of six standby generators will be installed in the Matinkylä–Kivenlahti section. The standby generator will start up automatically after a few seconds if the transformers serving the station’s HVAC and electricity lose power due to a defect or, for instance, a nationwide power outage. The standby generators have a rated power of 500 kilowatts. This capacity is sufficient to maintain the metro station’s key safety functions, such as lighting, the PA system, the evacuation elevator and access control. The standby generator ensures the metro station’s safe operation in the event of a power outage and people’s safe exit from the station.

Further information

24/7 phone line of the Soukka contractor, consortium YIT–ARE: +358 (0)40 628 8161

Länsimetro’s feedback line (Mon–Fri, 9 am to 1 pm): +358 (0)50 377 3700

 

 

 

 

 

 

 

 

 

 

 

 

The first test phase is point testing – is information travelling between the different functions and to the control room?

Systems testing will ensure that all of the 52 different systems installed in the West Metro function safely and as planned under all conditions. The systems are like the West Metro’s nervous system, transmitting messages from various functions to the metro’s brain, i.e. HKL’s control room in Herttoniemi. Information must also travel from the control room to the functions. The systems testing will begin with point testing on single components and progress to the testing of larger entities, such as functions, systems and stations, as well as testing between stations and testing of the entire metro infrastructure.

Kuvassa on työmiehiä työmaavaatteissa Keilaniemen metroasemalla.

In the testing phase, point testing (I/O tests) will be carried out first. These tests will ensure that all of the individual devices, meters and components of the 52 different installed systems have been installed correctly and work as planned. The tests are an important part of quality assurance, and without them, a modern public transport system could not be opened to traffic.

Point testing involves making sure that each input and output message functions properly. The signal must travel from the device to the system’s centre and from the centre to the device. The signal must be traced from the device to the device’s centre located inside the station, and from there to the local control room, and finally to HKL’s control room in Herttoniemi. There are tens of thousands of points along the Matinkylä–Kivenlahti metro section. The first point tests at a metro station were carried out at the Kaitaa station in May 2020. HVAC control equipment was the first to undergo point testing. The testing phase at the Sammalvuori depot has already been wrapped up, and construction has been completed.

Testing also monitored online

Since the spring of 2020, it has been possible to follow on the Construction web pages, from the War Room, the progress of a few key construction projects and installations at the stations and on the rail line, as well as read about some of the installations that have been completed. A new feature on the Construction pages is the possibility to keep track of the progress of the testing. Point testing of the HVAC automation system and the building technology supervision system are the first to be monitored in the War Room in terms of testing. As the testing proceeds, new entities to be monitored will be included.

Example: Point testing of the HVAC automation system

Caverion Suomi Oy is in charge of installing, testing and commissioning the HVAC automation system on the West Metro’s Matinkylä–Kivenlahti section.

“When, for example, the humidity and temperature conditions change on the metro platform, the HVAC automation will adjust the ventilation to restore the conditions. The same condition monitoring takes place in nearly all spaces of the metro station. Monitoring the conditions in underground technical spaces is critical. When temperatures are too high, the equipment in technical spaces overheat, which leads to malfunctions. With the help of the HVAC automation system, the temperatures in the metro station are continuously monitored and the spaces are cooled to within the permitted limits. The automation system monitors the operation and temperatures of the cooling equipment to ensure that the required cooling energy is continuously available and that the spaces can be cooled,” says automation expert Juha-Matti Välimaa of Caverion Suomi Oy, describing the importance of the HVAC automation system to the metro’s safety.

A total of 9,900 point tests will be carried out on the HVAC automation system. By the end of February 2021, some 5,150 tests had been performed. The point tests of the HVAC automation system will involve testing the connection between the installed devices on the Matinkylä–Kivenlahti section and the control room. For example, the functioning of the ventilation’s fire dampers will be tested, and it will be verified that when the fire damper is open/closed, the signal travels and the information is displayed correctly in the control room. When closed, the fire dampers prevent smoke from spreading through the ventilation, for instance, in the event of a fire. There are several hundred fire dampers along the Matinkylä–Kivenlahti section.

Example: Point testing of the building technology supervision system

Hitachi ABB Power Grids is in charge of the installation, testing and commissioning of the West Metro Matinkylä–Kivenlahti section’s building technology supervision system. The system will enable the real-time and remote monitoring of the metro stations, metro line and maintenance tunnels, emergency exit shafts, station doors, elevators, escalators, lighting, smoke extraction and alarms, from the control room. The system will also set off automatic alarms and measures in emergency situations.

A total of 23,000 point tests are being carried out on the building technology supervision system. By the end of February 2021, some 14,140 tests had been carried out. The point testing will ensure that the signals of the installed building technology supervision device end up in the right place in the control room’s database and monitor. At the same time, the tests will also ensure that the message travels from the control room to the device. In practice, the point testing verifies whether the temperature, flow and smoke sensor information is displayed correctly in the control room.

Testing ranges from single points to the metro’s entire infrastructure

Once the point tests are completed, operational tests will cover single functions, for instance, the operation of ventilation, and systems testing will ensure that the systems function as planned, for instance, that the ventilation can be adjusted as indicated in the plans. These tests are followed by adjustments and measurements in which, for example, air flow is adjusted, and measurements are taken to determine whether the ducts contain the correct volume of air flow. This stage is followed by station-specific test runs to see, for example, whether the building technology supervision system works with the station’s other systems. The station-specific tests are followed by tests to ensure the functions between the stations, such as the functioning of the fire-extinguishing water line at the stations and on the rail line. Finally, how the stations function in different emergency situations, such as fires, floods and power outages of different durations, is tested. Some of the tests involve the metro train’s control system, and these tests are carried out again in conjunction with the other metro systems.  We will provide more information on the different phases of the testing as the tests proceed.

The Matinkylä–Kivenlahti construction project will wrap up after testing and official inspections, when Länsimetro Oy simultaneously hands over all five stations and the rail line infrastructure to the traffic operator HKL in 2023. The joint local authority Helsinki Region Transport (HSL) will decide when metro traffic can begin.

Sneak peek at a metro worksite: ‘Wanderers’ arrive at Kivenlahti

Art will be incorporated into the architecture of every metro station along the Matinkylä–Kivenlahti section. The aim is to make the stations more attractive, inviting and recognisable. The metro stations will feature art in various forms – light, sound, paintings and sculptures. The Kivenlahti main station will be adorned by Kalle Mustonen’s Kulkijat (‘Wanderers’) sculptures. The installation of the Wanderers on the metro platform has been taking place this week. Once installed, the sculptures will be protected so that construction work in the station can be completed.

Kuvassa näkyy kaksi oranssia hahmoa metrolaiturilla, joka on vielä työmaa.
The Wanderers sculptures have arrived at their home in the Kivenlahti metro station. The sculptures were installed on the metro platform in early March 2021. Image: Kalle Mustonen

The main station’s landmark consists of two wooden figures that are approximately two and three metres high. The humorous figures, which appear to be running in the middle of the metro platform, are endearing and will stand the test of time. Created in warm wood, the sculptures contrast with the otherwise light tones of the metro station. “Surface treating the sculptures was more work than I had anticipated, but I didn’t want to make any compromises that would show on the Wanderers’ living wooden structure,” says the Wanderers’ creator, artist Kalle Mustonen.

“It is very rewarding to complete a long-term project and see the Wanderers in their right setting at the Kivenlahti metro station. Creating art for a metro station is a unique experience, as the sculptures are sitting in place, waiting to be seen by the public. Only a few construction workers have seen them in person. Creating art for a metro station is also different from other art projects in that it’s difficult to grasp the scale of the metro station. Although the metro platforms are quite long, for instance, the lighting on the platforms changes one’s impression of the space.  I am pleasantly surprised at how my handcrafted installation and the almost futuristic lighting work together. The outcome of this combination is a retrofuturistic scene,” says Mustonen, describing the atmosphere during the installation and completion of the Wanderers.

A naming competition for the artwork will be organised at a later date.

Read more about the metro station art and see the art in the other metro stations.

And watch a video on the artwork.

Soukanväylä worksite area to be landscaped from 15 March until 31 May 2021

Landscaping work on the Soukanväylä worksite area at the Soukka metro station will begin on 15 March and continue until the end of May. The area will be restored and landscaped in accordance with the environmental plan. An illuminated pedestrian and bike path will be constructed on Soukanväylä. As part of the landscaping, the barrier surrounding the worksite will be removed and a chain-link fence will be installed.

Soukanväylä’s service tunnel and exit shaft are at the West Metro’s Soukanväylä worksite area. During construction, the metro builders use them to access the worksite. Once the metro is completed, the Soukanväylä service tunnel will be used periodically for maintenance on the Soukka metro station. The exit shaft is related to the metro’s safety, serving as an emergency exit from the metro tunnel for commuters. There are nine exit shafts along the Matinkylä–Kivenlahti metro section.

Ilmakuva Soukanväylän metrotyömaasta.

Further information

24/7 phone line of the Soukka contractor, consortium YIT–ARE: +358 (0)40 628 8161
Länsimetro’s feedback line (Mon–Fri, 9 am to 1 pm): +358 (0)50 377 3700

Summary of Länsimetro’s meeting of the Board of Directors on 18 February 2021

The Project Manager submitted a status report on the construction and cost monitoring of the Matinkylä–Kivenlahti section to the Board through the war room’s monitoring view. Construction is progressing in line with the project plan’s risk-assessed schedule and budget.

The CEO presented the general plan for developing the metro’s capacity and reliability. The general plan, which was completed in December 2020, presents ways to increase commuter capacity. The general plan was drawn up by HKL, HSL, Länsimetro Oy and the City of Espoo. It outlines how the metro’s capacity can be developed in different scenarios and how the metro’s reliability can be improved. One key measure for improving the metro’s commuter capacity is to shorten headways between the trains.

More information is available on the City of Helsinki’s website: Metron matkustajamäärät kasvavat – kuljetuskapasiteettia parannetaan | Helsingin kaupunki (in Finnish).

General plan: metron_kapasiteetin_yleissuunnitelma.pdf (hel.fi) (in Finnish).

The CEO presented the situation concerning renewing the co-operation agreement between Länsimetro and HKL. The co-operation agreement between Länsimetro and HKL that was updated on 27 November 2019 is valid until the Matinkylä–Kivenlahti section is open to the public. Follow-up negotiations on the agreement have begun, and the agreement group meets regularly. The goal is to conclude the agreement in the course of 2021. As agreed, HKL reports to Länsimetro Oy on the use of the Ruoholahti–Matinkylä section rail line and stations, and on the related service and maintenance tasks.

The CEO presented the coronavirus situation on the worksites. The incidence of new virus infections on the worksites of the Matinkylä–Kivenlahti section has eased, and all worksites are currently open.

Länsimetro Oy’s CFO presented the cost monitoring for the Matinkylä-Kivenlahti section and the schedule for Länsimetro Oy’s financial statements. The plan is for the financial statements to be addressed by the City Group Divisions in April, in which case the Annual General Meeting could be held in May. Construction is progressing in line with the project plan’s budget.

The CEO presented the realisation of the project’s targets in 2020.

The next meeting of the Board of Directors will be held on 25 March 2021.

Further information:

Olli Isotalo, Chairman of the Board of Länsimetro Oy, tel. +358 (0)50 593 3359

Ville Saksi, CEO, Länsimetro Oy, tel. +358 (0)40 823 2086

Media contacts: Satu Linkola, Communications Director, tel. +358 (0)46 877 3392

Excavation work to be carried out on Yläkartanontie in the first two weeks of March – only one lane in use

Sewer repairs will be carried out at the Soukka metro station’s technical shaft on Yläkartanontie in the first two weeks of March 2021. As the repairs will involve excavation work, exceptional traffic arrangements will be made at the Yläkartanontie shaft. Only one driving lane will be in use during the excavation work. The address of the Yläkartanontie technical shaft is Yläkartanontie 30.

The technical shaft on Yläkartanontie is intended for the smoke extraction, pressure equalisation and ventilation related to the operations of the Soukka metro station. The shaft building is tall, because possible additional construction in the area was taken into account in its construction. This means that the shaft building is required to be higher than its surrounding buildings, e.g. for smoke extraction purposes. The shaft structures will be landscaped to suit the environment during the final stage of construction.

Ilmakuvassa Soukasta näkyy Länsimetron Soukan metroasemaan kuuluva Yläkartanontien tekniikkakuilu.

Further information

24/7 phone line of the Soukka contractor, consortium YIT–ARE: +358 (0)40 628 8161
Länsimetro’s feedback line (Mon–Fri, 9 am to 1 pm): +358 (0)50 377 3700

Work site barriers at Yläkartanontie removed

In the last two weeks of January, the work site barriers surrounding the technical shaft on Yläkartanontie at the Soukka metro station were removed on the forest side, and a permanent fence was installed. The barriers by the road remain in place. The dismantling and installation work does not affect circulation on Yläkartanontie.

The technical shaft on Yläkartanontie is intended for the smoke extraction, pressure equalisation and ventilation related to the operations of the Soukka metro station. The shaft building is tall, because possible additional construction in the area was taken into account in its construction. This means that the shaft building is required to be higher than its surrounding buildings, e.g. for smoke extraction purposes. The shaft structures will be landscaped to suit the environment during the final stage of construction.

 

Ilmakuvassa Soukasta näkyy Länsimetron Soukan metroasemaan kuuluva Yläkartanontien tekniikkakuilu.
Kuva: Iiro Mikola, Optivision Oy

Further information

24/7 phone line of the Soukka contractor, consortium YIT–ARE: +358 (0)40 628 8161

Länsimetro’s feedback line (Mon–Fri, 9 am to 1 pm): +358 (0)50 377 3700

Video takes you on a journey inside the West Metro’s secret spaces

Deep in the bedrock of southern Espoo, one of the most modern and safest metros in the world is being built. The video ‘A journey inside the West Metro’s secret spaces’ takes you underground to the Finnoo metro station’s construction site. Commuters only see roughly one third of the metro station’s spaces: the platform area, elevators, escalators and entrances. Two thirds of the metro station is hidden from commuters’ view. These spaces contain the HVAC and electricity and systems that a metro of today requires and make the West Metro one of the most modern and safest metros in the world. Read more about the metro we are building.

Watch the video below to see the West Metro’s secret spaces, which will always be hidden from commuters’ view. Video only in Finnish.

The video ‘A journey inside the West Metro’s secret spaces’ offers a unique peak at an underground metro construction site. The video is also available without subtitles on YouTube.

The West Metro project involves the construction of seven kilometres of rail line and five new stations: Finnoo, Kaitaa, Soukka, Espoonlahti and Kivenlahti. In addition, an underground metro depot is being built in Sammalvuori. The metro will travel entirely underground also in phase two, in two parallel tunnels.

Sneak peek at a metro worksite: Metro stations already adorned with art

Art will be incorporated into the architecture of every metro station along the Matinkylä–Kivenlahti section. The aim is to make the stations more attractive, inviting and recognisable. The metro stations will feature art in various forms – light, sound, paintings and sculptures. Read more about the metro station art.

The artwork is beginning to appear at the metro stations. Below is a glimpse of some of the artwork in the metro stations.

Kuvassa näkyy Leena Nion Haavekuvia-teos, jonka paneeleissa on mm. joutsen, kukka ja simpukka.

The Finnoo metro station will feature Leena Nio’s figurative “Haavekuvia” (Dream images), the panels for which have been installed in the metro platforms. The maritime theme runs throughout Nio’s artwork, with details inspired by the seashore. You can follow the progress of Nio’s artwork on Instagram: https://www.instagram.com/leena.nio/

Kuvassa näkyy Antti Tantun Juurtuminen-teoksen juuria metrolaiturin seinässä.

Antti Tanttu’s “Juurtuminen” (Putting down roots) is now installed in the Kaitaa metro station. The piece is a graphically stylised network of roots, spanning almost the entire length of the platform. You can follow Tanttu on Instagram: https://www.instagram.com/anttitanttu/

Kuvassa näkyy Taneli Rautiaisen Sfäärit-teoksen valaistusta.

The lights of Taneli Rautiainen’s “Sfäärit” (Spheres) art installation can be seen at the Soukka metro station. The installation consists of four different elements (spheres), which are located vertically in different parts of the metro station from the platform level to the ticket hall. The installation consists of lights and metal sheet structures reminiscent of a rock cutting. You can follow Rautiainen  on Instagram https://www.instagram.com/taneli_rautiainen/ 

Kuva on havainnekuva Espoonlahden metrolaiturilta, jossa näkyy Hans Rosenströmin Varjot veden pinnalla-teosta.

The Espoonlahti metro station will feature Hans Rosenström’s light and sound installation “Varjot veden pinnalla” (Shadows on the water). A slowly moving pattern of light, reminiscent of light reflected from the surface of water, will be projected onto the ceiling of the platform’s mid-section. The installation includes a quietly humming human voice. The sounds for Rosenström’s work were recorded at the turn of the year. You can follow Rosenström on Instagram: https://www.instagram.com/hans.rosenstrom/

Kalle Mustonen’s sculpture “Kulkijat” (Wanderers) is making its way to the Kivenlahti metro station. The creation consists of two approximately two- and three-metre-high humoristic wooden figures in the middle of the metro platform. You can follow Mustonen on Instagram: https://www.instagram.com/kmustonen/

Kuvassa näkyy kaksi oranssia osaa Kalle Mustosen Kulkijat-veistoksesta.

On the Construction pages you can follow the progress of a few key construction projects and installations at the stations and on the rail line from the War Room (in Finnish). You can also see some completed installations and the progress of testing.

Länsimetro recommends the use of masks also during breaks

As the developer, Länsimetro Oy has asked its construction contractors working on the West Metro to draw attention to the use of masks due to the Covid-19 situation. The metro worksite contractors have strongly recommended the use of masks on the worksite and also, for example, during lunch breaks or when visiting shops. On some sites, the use of masks is mandatory. Information concerning the use of masks has been communicated in several languages on the worksites.

As the developer, Länsimetro Oy can strongly recommend that all employees use masks, but neither Länsimetro nor its contractors have the means to impose mandatory mask use by individuals outside the worksite. We can increase communication on the matter and stress the importance of acting responsibly during this difficult time.

In order to prevent the spread of the virus, construction contractors on the metro worksites have also adopted other measures besides the use of masks. Contractors recommend focussing on hygiene, getting tested for the virus with even the slightest symptoms and not coming to work when sick. In addition, the times when people arrive to work and take their meals have been staggered and, for essential meetings, people work in small groups while also wearing masks and complying with social distancing rules.

With the exception of the cases at the metro station under construction at Kivenlahti during weeks 3 and 4 (18–31 Jan.), the number of positive Covid-19 cases at Länsimetro’s worksites has been very low. The main contractor working on the Kivenlahti metro station, Skanska, published a press release (in Finnish) on the coronavirus infections at Kivenlahti on 25 January 2021. Kivenlahden metrotyömaalla todettu useita koronavirustartuntoja | www.skanska.fi