Recently the trading floor has been bathed in a new light. The old metal halide luminaires in the glass ceiling have been replaced by modern LED luminaires.
A perfect match
The choice fell on Glamox i80, a powerful industrial LED luminaire suitable for installation in large rooms with tall ceiling heights, such as factory assembly halls and warehouses. The historical glass ceiling over the trading floor is made up of multiple square compartments.
By chance, the square i80 luminaires fit exactly into this structure. The dimensions of the luminaires combined with their technical lighting properties made Glamox i80 a good choice for this project.
A total of twenty Glamox i80 LED luminaires were installed in the ceiling above the trading floor. These replaced the 28 metal halide luminaires which had lit the exchange hall for years. The twenty LED lights produce more light than the 28 metal halide luminaires. The newly installed i80 luminaires provide approximately 200 lux on the trading floor.
No easy access
The Glamox i80 luminaires were installed via a space above the glass ceiling in the old Amsterdam Stock Exchange. In order to replace the luminaires in the ceiling, the team of installers had to crawl along a route which in part passes over the roof of the historical building.
Surrounded by the beautiful park of Tokoinranta, the Helsinki City Theatre has been restored to its original glory in a two-year renovation project. The renovation of this building, designed by Timo Penttilä in 1967, was performed showing proper reverence for the original design, while fully updating its services engineering.
The modernisation provided both the 274-seat and the 923-seat stages with top-quality stagecraft and sound and lighting systems. The doors to the remodelled facilities were opened to the public in August 2017 when the musical Myrskyluodon Maija – tickets to which have been sold out far into the autumn – was shown on the large stage.
The audience is sure to enjoy their time in the theatre’s beautifully restored entrance hall, foyer and auditoriums. Another world opens up backstage where the theatre’s skilled professionals create the sets for the performances. Behind the curtain, good working lights are needed in rehearsal spaces, the stage property room, makeup and dressing rooms and in many other facilities all the way to the theatre’s large store of hats. The staff is absolutely delighted with the modernised workspaces and their lighting.
“Before the renovation, all the facilities were quite gloomy. Now it feels like the sun is shining in even windowless spaces and it feels great to work here. We are very pleased with it; it’s now easy to see what you’re doing, and the lighting has also improved occupational safety,” says Antti Rehtijärvi, the Technical Director of the Helsinki City Theatre.
Clearly better working lights
During the renovation, the entire electrical system of the building was remodelled.
“As a project under design, the building proved an exceptionally multifaceted challenge with its numerous spaces for diverse purposes. Hiding the technology was a big job and required close cooperation with various design teams and contractors. The use of a data model simplified the electrical wiring and lighting designs considerably,” says Jorma Finnberg, Project Manager at Rejlers Finland Oy, the Electrical Consulting Company.
Challenging stage lighting
The theatre stage is a swarm of activity between performances; alongside intensive rehearsals, the massive technology and staging need to be built. The black surfaces of the stage alone pose a challenge for the lighting. The measurements of the large stage are predictably sizeable: the rotating performance area facing the 923-seat auditorium is 24 metres high and, with its background space, covers an area of 600 square metres.
The old working lamps of the small and large stage were replaced with powerful LED luminaires from the Glamox i80 serie, which provide the high spaces with ample and even lighting. The luminaires’ 1–10V control units link them to the main stage-lighting control systems. Built in 1989, Studio Elsa, the extended portion of the City Theatre, also has Glamox i80 luminaires illuminating its rehearsal stage with LED lightsource of 3000 kelvin color temperature, in the future it can also be used in performances - if necessary.
“The new LED working lights are a huge step forward compared to the old halogen lighting. The colour and amount of light is now clearly better,” Rehtijärvi says happily.
The lighting is a spot on from stage set to costumes
A stage property room is a vital part of a theatre because this is where the stage set is created. Up to eight meters tall, the structures built for the large stage are true masterpieces. This precise craft requires plenty of light in the high spaces above the stage. Exceptionally good colour rendering is also needed for set painting and surface treatment. The theatre’s production areas are illuminated with the superbly efficient Glamox GIR lighting fixtures, equipped with T5 fluorescent lamps including colour rendering of Ra=90.
Even the City Theatre’s magnificent collection of costumes and hats can now bask in a light worthy of its splendour. The Glamox i20 luminaires installed in the ceiling of the theatre’s storage spaces bring out the colours and textures of the costumes in the high-quality LED light.
“We look for clothing for various plays every day in the costume and hat storerooms and have the actors try them on. It’s vital that the natural essence and colours of the textiles are easy to distinguish,” Rehtijärvi says.
Recently a major upgrade to LED lighting has been carried out, in cooperation with Glamox Luxo Lighting. The project includes a variety of key locations at the airport, such as terminals, control posts, car parks and more.
Important cost savings
This investment in the latest energy-efficient technology will contribute to improved passenger ambience, and at the same time reduce the airport’s energy and CO2 consumption.
Heathrow has set a target to reduce its absolute CO2 emissions from fixed sources by 30% on 1990 levels by March 2020. Significant savings will also be made on maintenance costs:
Heathrow, a major hub airport, has particularly high costs of access for maintenance. In all areas maintenance can only be carried out during a few hours at night. The airport’s new LED lighting solutions are virtually maintenance free, so that 100% lighting levels can be upheld without cumbersome and time consuming light source changes.
Text: Marjukka Puolakka
Pictures: Juha Tuomi
The survival training unit in Lohja has top-quality equipment, even by international standards, and offers unique conditions for comprehensive learning. The equipment includes a helicopter with a rescue hoist, self-balancing life rafts for 4-101 people and rescue chute systems. Lohja has the only facilities in Finland for Helicopter Under Water Escape Training (HUET). The hall wall has been modelled after a side of a boat and includes a net for climbing, and other authentic rescue equipment. The pool is used for training 3 000 - 5 000 seafarers every year. The nearest similar training location is in Denmark, which means that Meriturva also has many customers from abroad, mainly from Estonia and Sweden. "We train, for example, shipping company staff, rescue staff and students from maritime academies. The training is available for everyone and our customers range from canoe groups to astronauts" says the Equipment Manager Michael Blomqvist from Meriturva. The training hall was built in 2002 and renovated in summer 2018. As a part of the renovation project the lighting installation was upgraded to modern LED products.
Millions of Litres of Water
The training pool is four metres deep, 43 metres long and 27 metres wide. It's the biggest indoor pool in Finland and can take up to 4.7 million litres of water, which meant that it took ten days to empty the pool for the renovation. Water is a difficult element when it comes to designing lighting, as it absorbs light. The pool is efficiently lit with i90-P luminaires hanging from the ceiling, 15 metres above the water. The output of the three luminaires is 45 000 lumens. Of the four i90 lighting options, the medium beam luminaires were selected. The protective glass is heat-soak tested hardened glass, which has been treated on both sides in order to guarantee good light penetration. "The pool area offers various challenges for lighting, for example the humidity. The i90 lights are the most effective and durable choice for these conditions", says the Electrical Designer Pasi Tamminen from Sähköinsinööritoimisto Ahonen Ltd. Glamox provided the Meriturva pool building with all the new light fixtures. "I have used Glamox products for years and I know them to be reliable. Using only one lighting supplier also makes operating easier", Tamminen states. There are additional MACH 2 floodlights installed to offer more effective lighting for the survival training. Installed below the walking platform, they are long-lasting and can withstand the challenging conditions. The training and equipment area next to the pool is lit with the durable and efficient i80 luminaires, hanging from the dark grate ceiling.
The high-quality and glare free lighting ensures unobstructed visibility for both rescue procedures and equipment and gear testing. After each training course, which last between one and five days, the staff checks the condition of the equipment before it's used again. "Safety comes first for us and everything has to be in perfect working order. After the training course, the technical staff washes and dries the rescue overalls, pack the vests and look after the equipment", Blomqvist explains. The training is carried out in variable and realistic conditions. With a push of a button, the pool will be taken over by waves over a metre tall. The wave machine produces seven different types of waves, which is extremely rare. The wind machine will produce wind up to 30 metres per second with rain beating on your neck. While the helicopter is hoisting up the evacuated people, rotor sounds blare from the speakers. The evacuation training also includes rescue in the dark. "The old lights took a long time to regain their full power. Now the LED lights relight the space in an instance. The space is now better illuminated, and the lights don't blind even those who are floating face up on the pool", Blomqvist continues. The cool white light of the 4 000 kelvin LED luminaires is also an improvement to the slightly yellow light emitted by the discharge lamps. The robust and long-lasting LED lights make lighting maintenance easier in the tall pool building.
The lighting solution in a nutshell:
Meriturva training hall renovation, Lohja
Constructor: Senate Properties
Electrical planning: Sähköinsinööritoimisto Ahonen Ltd.
Electrical work: Uudenmaan Rakennus- ja Maalauspalvelu Ltd.
Pool area ceiling: i90-P
Pool area spotlights: MACH 2
Pool edge area: i80
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