Remote inspection and damage inventory in concrete silos
When tall concrete silo structures needed to be inspected without risky climbing or downtime, Invator took technology to new heights. Using drones and photogrammetry, millimeter-accurate 3D models of four silos were created - a method that revealed hidden cracks, enabled precise damage mapping, and showed how remote inspection can become the future standard for safe and efficient building analysis.
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Condition assessment and monitoring – Quay 4, Port of Oxelösund
Quay 4 in the Port of Oxelösund, built in 1939, showed severe damage in the form of corrosion, cracks and erosion. Invator carried out a comprehensive condition assessment and installed an advanced SHM system to analyze the actual behavior of the quay and identify loss of stiffness.
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Carbon fiber reinforcement of chimney – Käppala, Lidingö
The chimney at Käppala wastewater treatment plant showed cracking and reduced stiffness, with a risk of overturning. Invator investigated reinforcement with carbon fiber composite as a long-term solution and presented techniques, references and workflow to increase the load-bearing capacity and service life of the structure.
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Condition assessment of railway bridge in Abiskojåkka, Abisko
The Abiskojåkka railway bridge, a key link on the Kiruna-Narvik Ore Line, showed signs of cracking along the tension cables. To understand the extent and cause, Invator carried out an advanced condition assessment using ultrasound, geo-radar and long-term wireless measurement. The results showed that the bridge has a stable behavior, but with a need for continued follow-up and in-depth analysis of the tensioning system.
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Condition assessment and proposed measures – Culvert and floor slab, Valdemarsvik
The culvert under the boiler plant in Valdemarsvik showed extensive cracks and corrosion, especially under the boilers where the load is highest. Invator carried out a detailed condition assessment using LIDAR, geo-radar, ultrasound and numerical analysis, which showed that parts of the reinforcement were depleted and that the structure did not meet safety requirements. The results formed the basis for emergency strengthening measures and long-term repair proposals.
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Precise location of rebar in the Forsmark nuclear power plant
At the Forsmark plant, Invator developed a method to precisely locate reinforcement before drilling expander bolts into existing concrete - even through the cover plate. The combination of geo-radar and ultrasound provided high precision and enabled drilling within tight tolerances without hitting any reinforcement.
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Inspection of tension cables and cracking in Frövibron
At the bridge over the Fröviforsån river, Invator carried out an advanced survey of cracks and tension cables after horizontal cracks were observed in the post-tensioned beams. The investigation showed that the damage was mainly caused by thermal stresses and small cover layers - but that the structure retains its global stiffness and function.
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Condition assessment of pools and water tanks – Leksand Sommarland
At Leksand Sommarland, Invator carried out a comprehensive condition assessment of the pool and rafting facilities following extensive cracks, voids and leaks. The results showed that several structures had reached their technical lifespan - and provided a clear basis for repairs and new construction.
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Non-destructive testing and condition assessment of the Alnö Bridge
In the condition assessment of the Alnö Bridge, Invator and Norconsult combined advanced drone technology with non-destructive testing to identify corrosion and grouting deficiencies. The results showed localized damage in the range 6-8, while the majority of the tension reinforcement was intact - an important basis for future repairs.
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Non-destructive testing and inspection of tension cables – Ölandsbron
For the condition assessment of the Ölandsbron, Invator focused on a span with previous corrosion damage. GPR, ultrasonic tomography and verification drilling confirmed the good condition of the tension cables - no voids, corrosion or elevated chloride levels were found.
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Special inspection of tension cables in Måløybrua, Norway
Following suspicions of inadequate grouting of tension cables in the Måløy Bridge, a special inspection was carried out to map the position and status of the cables. The investigation showed that one channel was completely empty with corroded wires, while the others had minor voids and separations.
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Condition assessment and evaluation of masonry chimney in Norrköping
When the over 100-year-old chimney at Norrköping's cotton mill showed signs of serious damage, Invator was called in. Using drone-based 3D modeling, ultrasound and FEM analysis, the team mapped the cracks and corrosion and developed a plan to preserve and secure the structure for the future.
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Condition assessment of concrete bridge in Kalix
When the Kalix Bridge was about to be demolished, Invator and Luleå University of Technology took the opportunity to use it as a test bed for future bridge technology. Through advanced load testing, digital twins and non-destructive testing, the researchers were able to map real load-bearing capacity, identify damage and develop methods that can extend the life of Sweden's bridges.
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Special inspection of tension cables (PT-ducts) – Gisundbrua, Norway
During the inspection of the Gisund Bridge, a 1,147-meter-long concrete bridge built in 1972, Invator discovered deficiencies in the grout in several tensioning channels. Using drones, ultrasound tomography and verification drilling, the status of the cables and areas of increased corrosion risk were mapped for targeted repair measures.
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Non-destructive testing and inspection of water towers in Söderhamn
After 50 years of operation, the water tower in Söderhamn showed cracks, delamination and suspected defects in the tension cable anchorages. Invator carried out a detailed condition assessment using drones, ultrasound and geo-radar, which showed that the global bearing capacity was intact and identified the areas that needed to be addressed for continued safe operation.
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Non-destructive testing of machine foundations with visible cracks
When vibrations and cracks began to threaten operations at LKAB's Kiruna processing plant, Invator was called in to act quickly. Through advanced vibration analysis and non-destructive testing, the team was able to confirm that the foundation was stable in the short term - but also reveal hidden design flaws that would otherwise have risked major production stoppages.
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Special inspection of casing in Gimsøystraumen bridge, Norway
A comprehensive survey of the Gimsöystraumen bridge has mapped the status of the grout in the span channels. The results show that the channels are largely intact, with only minor deviations and limited superficial corrosion on the lining pipes, with no risk of serious damage.
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Mapping of concrete floors in shopping centers
After extensive cracking and settlement were discovered in the concrete beams of the Storlien shopping center, a detailed investigation mapped the damage and its causes. The results showed significant voids under the beams, deficiencies in the concrete's frost resistance and varying amounts of steel fibers, with a high risk of further settlement and cracking.
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Full-scale testing – load to break
A full-scale test of a steel fiber reinforced concrete (SFRC) slab on piles shows that the material can withstand high loads with good crack control and ductility. The results strengthen the possibility of using SFRC as individual reinforcement in future efficient and sustainable structures.
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Advanced analysis of the altarpiece when the Kiruna church was moved
Prince Eugen's monumental altarpiece in Kiruna Church was at great risk when the church was moved. Securing this unique work of art required advanced, non-destructive testing using thermography and photogrammetry - methods that revealed hidden defects and provided safe follow-up.
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The chimney in Köping had two thirty-meter cracks
YARA's 90-meter-high concrete chimney in Köping had two continuous vertical cracks that raised concerns about the long-term durability of the structure. A comprehensive condition assessment was carried out to analyze the causes and develop proposals for repair and strengthening measures.
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Condition assessment of cracks in parking garages
During the reconstruction of a parking garage in Lidingö, an independent review of the reinforcements and cracks in the column brackets was required. Using advanced measurement methods, we were able to verify the quality of the work and ensure that the structure is safe for future loads.
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Non-destructive testing of tension cables on Herøysund Bridge in Norway
A decision to demolish the Herøy Bridge in Norway led to a major research project to map the extent of the damage in detail. Invator AB was entrusted to carry out the non-destructive testing on the bridge to identify voids and corrosion in all casings.
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Independent verification of the Big Creek Bridge in Alaska
Independent verification of Big Creek Bridge Problem solving During the casting of a new bridge on the Alaska Highway, complications arose and a large number of casting wounds were noted on the underside of the bridge deck. Were the casting wounds superficial or were there also deeper damages further into the structure?
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Non-destructive testing of tension cables in Vallbybron, Västerås
Invator Sverige AB was commissioned by SWECO to carry out a special inspection of the tension cables on Vallbybron in Västerås. Leaks and the discovery of a large amount of chlorides created doubts about the status of the tension cables.
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Inspection and permit assessment of swimming pool in Västervik
Invator Sverige AB was commissioned by the municipality of Västervik to inspect and develop a solution for the repair of a swimming pool in Västervik. The pool had extensive reinforcement corrosion and loose concrete cracking.
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Repair of cracks in chimney
Vertical cracks from the top of YARA's chimney raised concerns about its condition and load-bearing capacity. This required a comprehensive inspection and analysis to assess the severity of the cracks, identify the causes, and propose measures for the safety and long-term sustainability of the structure.
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Compilation of innovation systems for customers
The customer wanted to be able to identify customer needs and demand at earlier stages. From waiting for orders to a more active approach.
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Calculation and modeling of concrete mast foundations
It was feared that the load-bearing capacity of the mast foundation with a 240 m high mast was impaired. Would it hold or was the risk of collapse imminent?
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Monitoring stresses in a railway bridge with Structural Health Monitoring
Cost-effective monitoring of cracks and stresses in the reinforcement of a railway bridge with full data collection. This is how it was done.
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Renovation of parking garage
The parking garage had cracks in the columns and floors and corrosion deposits due to lack of maintenance. This is how we solved the problem.
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Non-destructive testing of concrete bridge
Damage to existing tension cables in concrete structures, especially rough structures, is extremely complicated to map. So we solved the problem with tomography.
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Carbon fiber reinforcement of rough concrete columns
The 40-year-old concrete columns of the industrial premises were extensively damaged due to corrosion and overloading. This is how we solved the repair with minimal disruption.
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