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AGU FALL MEETING 2022

AGU (American Geophysical Union) Fall Meeting is the most influential event in the world dedicated to the advancement of Earth and space sciences. Every year, AGU Fall Meeting unites the Earth and space science community to share findings, connect like-minded scientists from around the world, and advance our profession and shared passion for the impact of science.

AGU Fall Meeting 2022 will be held in Chicago and online everywhere 12 – 16 December 2022. More than 25,000 attendees from more than 100 countries will convene to explore how Science Leads the Future.

LUNITEK will exhibit at the AGU Fall Meeting 2022 and we’ll be delighted to welcome you at our stand providing information on earthquake monitoring systems and our products.

For more information about the meeting, please visit https://www.agu.org/Fall-Meeting

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COMPENG 2022 – WORKSHOP ON COMPLEXITY IN ENGINEERING (Florence, July 18-20, 2022)

On July 20, 2022 we participate in the COMPENG 2022, a workshop organized by the National Institute of Optics (CNR-INO), the Institute of Complex Systems (CNR-ISC), the University of Florence and the National Institute of Nuclear Physics (Florence) in cooperation with the IEEE Italy Section.

COMPENG is a series of international workshops founded in 2010 aimed at providing a forum for experts and professionals working on the latest developments in complexity science and its application in an engineering perspective.

Our participation in the workshop is about modern solutions for Remote SHM

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CASE STUDIES HOME

Circo Massimo monitoring during the Maneskin concert

CASE STUDIES

Circo Massimo monitoring during the Maneskin concert

The Circo Massimo is the largest building for spectacle of antiquity and one of the largest of all time (600 m long by 140 m wide) and is linked by legend to the very origins of Rome: here, in fact, the Rape of the Sabine Women took place.

On occasion of the Maneskin concert on 9 July 2022, Lunitek installed, on behalf of the Polytechnic of Turin and Fine Arts, 7 seismometers to record and assess the vibrations caused by the concert and their impact on the remains of the Circus.

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CASE STUDIES

Structural Health Monitoring System Installed in Two Skyscrapers in Medellín – Colombia

CASE STUDIES

Structural Health Monitoring System Installed in Two Skyscrapers in Medellín – Colombia​

Through our Colombian dealer we carried out SHM systems installed in two Skyscrapers in Medellín, Colombia. In total 6 Triton accelerographs were installed together with accessory devices that allow the equipment to connect to the network, and therefore the visualization and the remote acquisition of recorded data. The accelerographs were installed on the basement or lower level, on the 16th and on the 34th floor of the Towers.

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CASE STUDIES

Structural Health Monitoring System Installed in Wind Turbine Wind Farm of Daunia

CASE STUDIES

Structural Health Monitoring System Installed in Wind Turbine Wind Farm of Daunia​

Wind Turbines are one of the cleanest and most attractive options for renewable energy. Evolution in this sector has lead to larger support structures and rotor blades. Furthermore, the turbines are exposed to environmental conditions that are not always favorable, aging of the supports, or even worse to defects in the construction process.
The purpose of monitoring this turbine is to investigate cracking damage which was spotted on the support base, which is made of reinforced concrete, to estimate the progressions of the crack and the stability of the wind tower.
The monitoring system is composed of:
– 1 Poseidon Light (legacy product now ATLAS)
– 1 Trixial accelerometer true FBA 0.5g
– 1 Poseidon (legacy product now TRITON)
– 1 4G router

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CASE STUDIES

SHM Systems installed in the Sulmona and the Foligno Hospitals

CASE STUDIES

SHM Systems installed in the Sulmona and the Foligno Hospitals

Structures are subjected to progressive deterioration due to various external factors such as aging, stress, environmental condition, accidents and to internal factors such as the lack of quality controls or defects in the construction process.
The health of structures is of primary interest because it represents a potentially high risk for life and property.
The Structural Health Monitoring of the two Hospitals is part of the OSS Lunitek monitoring systems which started in 1996 with winning a contract with Civil Defence.
The wired SHM system of the Sulmona Hospital was installed in the 2009 and it’s running 24/7. The system of the Foligno Hospital covers one area of the building and it comprises of a wireless Poseidon system (our legacy product, now called TRITON). This solution saves on installation costs and it is not invasive, as cable deployment in an operational hospital it is not easy!
In the case of strong earthquake and loss of mains power, the system is backed up by batteries and keeps on recording.

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CASE STUDIES

OSS -Seismic Observatory of Structures – Department of Civil Protection (DPC)

CASE STUDIES

OSS -Seismic Observatory of Structures - Department of Civil Protection (DPC)​

Through the Italian national network of the Seismic Observatory of Structures (Osservatorio sismico delle strutture – OSS), the Department of Civil Protection (DPC) monitors the oscillations caused by earthquakes in 160 constructions of public property.

The OSS allows the damage to be estimated, occurred to the monitored structures because of an earthquake. Through the OSS, structures that are of strategic importance for the seismic emergency management can be kept under control. Moreover, original data can be supplied to the technical-scientific community, that allow to improve the understanding of the response of structures to earthquake. Finally, such data contribute a useful background for updating the technical regulations for constructions in seismic zones.

In 1996 Lunitek won a contract with Civil Defence and since then we supplied systems for 96 buildings and more than 1000 true force balance accelerometers.

Our share of the OSS (Seismic Observatory of Structure) network is now about 70% as can be seen in Figure 1.

Furthermore, every year, a maintenance contract guarantees that the systems are running correctly and we guarantee to repair malfunctioning systems in less than 3 days.

The OSS Lunitek monitoring systems are mostly wired systems, but we also have buildings running with wireless systems.

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CASE STUDIES

Lunitek Seismic Switch as an alarm system in the former nuclear plants of Caorso and Trino Vercellese

CASE STUDIES

Lunitek Seismic Switch as an alarm system in the former nuclear plants of Caorso and Trino Vercellese​

The main concern with nuclear power plants and earthquakes is the structural integrity of the plant and the temperature of the reactor core. If the temperature goes into an uncontrolled state, the reactor will overheat and melt down with conceivable consequences.
Seismic monitoring is the primary measure used to avoid and mitigate potentially dangerous situations which could be caused by an earthquake. PGA (Peak Ground Acceleration) provides an idea of the real entity of a tremor. Magnitude alone does not affect PGA since the latter depends also on the depth of the earthquake.
When PGA exceeds a preset threshold, the seismic monitoring system alerts the central control center forcing a shutdown.
Our systems have been in use at the nuclear power plant of Caorso since 2002 with our previous company name and, as of 2015 the new Lunitek models are also being used in Trino Vercellese.
Even if both Caorso and Trino are no longer active nuclear plants, they need seismic monitoring because radioactive fuels are still present and need the utmost attention.

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CASE STUDIES

Sentinel System for SHM, University Mariano Galvez – GUATEMALA

CASE STUDIES

Sentinel System for SHM, University Mariano Galvez – GUATEMALA​

One of the most interesting application of SENTINEL is the project of structural health monitoring of the University Mariano Galvez in Guatemala.
The university is located in zone 2 of Guatemala City.
The specifications of the request was for 4 buildings. The professors from University are working to retrofit the structures with seismic isolator and have wanted to set up a monitoring system for those buildings. In particular they asked to evaluate the impact of the seismic isolator retrofit on buildings, calculating the natural frequencies before and after.
The Structural Health Monitoring solution is composed of:
– 40 Sentinel Accelerographs ± 2g
– 7 Triton A160 ± 2g
– 1 SHM software Lunitek Asclepius

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CASE STUDIES

Wireless Seismic Monitoring System for Dams

CASE STUDIES

Wireless Seismic Monitoring System for Dams​

Dams represent a high-risk potential for downstream life and property.
Dams and large water reservoirs are often constructed in valleys which are usually areas with high seismicity in fact they exist because active erosion is taking place. Furthermore, the reservoirs themselves can trigger seismic events due to the fact that the weight of the water produces a change in the stress levels of the rock under the reservoirs and the pore pressure decreases its effective strength. Aging and structural changes must to be taken into account too.
For these reasons dams should be monitored with high performance seismic instrumentation and monitoring systems to provide information on the health status of the structure and send alerts in the case of potential issues.

Lunitek has supplied and installed systems for monitoring dams in Italy under the commission and control of the Italian Civil Defence.
FOTO: diga Fiastra, diga Fiastra4, diga liscione1

The monitoring system of Fiastra Dam consist of the following elements:
– 3 Poseidon Lights (datalogger legacy version, now ATLAS)
– 3 Biaxial true force balance accelerometers LTFB160
– 1 Triaxial true force balance accelerometer LTFB160
– 3 Power supply units
– 1 Router for the remote communication with central server in Rome
– 2 WiFi repeaters to extend the WiFi coverage signal.