Detect radioactive substances at an early stage — safely minimize risks.
With the right measuring devices, you can reliably protect people, systems and processes. At the same time, you ensure that legal requirements are met and follow-up costs are avoided.
If you use our Dosimeterservice, the following products are available to you.
A key advantage of our solution lies in the perfectly coordinated overall system:
The dosimeter holder developed by Seibersdorf Labor GmbH and the specially designed protective film, combined with a stable and proven evaluation algorithm, ensure particularly precise and reproducible measurement results.
This combination ensures optimal positioning of the measurement components, protects against external influences and enables reliable dose determination — even under demanding operating conditions.
With our combination of technological expertise, in-house product development and many years of experience in Austrian radiation protection, we offer you a particularly reliable and practical solution for personal dosimetry.
With our combination of technological expertise, in-house product development and many years of experience in Austrian radiation protection, we offer you a particularly reliable and practical solution for personal dosimetry.
Thanks to their robust construction, our local dosimeters are particularly durable and are suitable for both indoor and outdoor use under demanding environmental conditions. They provide reliable measurement values over long periods of time and thus support standard-compliant documentation and assessment of radiation exposure.
Our local dosimeters are the ideal solution for operators of plants, authorities and organizations that depend on reliable, continuous monitoring of local doses.
We have been developing measurement technology for ionizing radiation for over 60 years and therefore have extensive experience in this area. In addition to our role as a manufacturer, we are also a test center, distributor and training center. This combined expertise enables us to provide a tailor-made and technically optimal solution for every application. Our measurement systems are not only used for radiation protection, but also for radiometric measurements in industrial environments and in automation technology.
When radioactive substances are found, time plays a decisive role. The earlier contamination is detected, the better it is possible to protect people, plants and the environment — and the lower are the follow-up costs for recovery, identification and disposal.
Radioactive substances occur more frequently in practice than you would expect. They are found, for example, in scrap, recyclable materials or waste, but can also enter the material cycle via imported raw materials such as steel or wood.
Typical sources of radioactive contamination
In practice, the following types of radioactive substances occur in particular:
Risks can only be minimized and costs controlled if radioactive substances are identified early on.
The choice of the right measuring device depends primarily on two factors: the
size of the sample and the throughput rate.
Portal monitors are suitable for large objects such as trucks, containers or railroad cars. Despite short measurement times (e.g. passage in around 10 seconds), they offer high sensitivity and reliable detection.
The automated process — from measurement to evaluation to documentation — makes the process more efficient, reproducible and less prone to errors. At the same time, personnel costs and ongoing operating costs are reduced.
The disadvantage lies in the higher investment and installation costs.
Handheld measuring devices are particularly suitable for low material throughput or flexible application requirements. They are significantly less expensive to buy and can be used on the go.
However, measurement, evaluation and documentation are carried out manually. As a result, personnel costs and user training and experience requirements are increasing.
A suitable handheld measuring device should therefore offer at least the following functions:
Choosing the right measuring device is crucial for the early detection of radioactive substances, the protection of people and facilities, and the economic control of follow-up costs. Depending on the application, the combination of portal monitors and handheld measuring devices offers an optimal solution.
An important area of application of our radiation measurement technology is scrap monitoring, i.e. finding radiation sources in scrap metal and other recycled materials using so-called portal monitors. Orphan sources represent a significant risk for employees, plants and infrastructure in the scrap and recycling sector. Our customer service includes advice, installation and repair of portal monitors.
We also assist with incident management when a plant detects radioactive substances. In this case, we carry out radiation protection operations, identify and quantify the radiating substances and ensure proper disposal — in accordance with legal requirements and in coordination with the responsible authorities.
The PRIMAS series portal monitors are available in seven variants, which are designed for different application scenarios. The variants differ in particular in detector volume, evaluation technology (standard or spectral with NASVD), and in housing models.
The PRIMAS portal monitor is used to detect radioactive radiation sources in the load of vehicles, for example scrap, waste or recycled material. The system consists of two detector columns, which are arranged opposite each other and are often installed in the area of the vehicle scale in practice. The housings of the detector columns are made of stainless steel and are therefore suitable for long-term outdoor use.
Radiation is detected using large-volume gamma detectors, each with a detector volume of 13 liters. Two detectors are integrated into each detector column, resulting in a total detection volume of 52 liters for the standard version. Shielding integrated into the housing reduces the influence of natural ambient radiation and increases sensitivity to radiation emitted by passing vehicles.
A touch display is available for operation and monitoring, which can either be integrated directly into the column or installed in an adjacent building. It provides a clear overview of how to interact with the measurement system and to track the measurement process during the measurement. The presentation of the measurement process enables a graphical localization of the radiation source.
The light version of PRIMAS offers the same range of functions as the standard configuration, but is equipped with two detectors instead of four (one detector per detector column). The lower detector volume reduces sensitivity, but is still sufficient for many applications.
The main advantage lies in the significantly lower costs: The reduced detector equipment makes the PRIMAS Light an economical alternative, particularly for applications with moderate detection requirements. It is possible to upgrade to four detectors later at any time.
The PRIMAS Pro, developed in cooperation with the Canadian company Radiation Solutions Inc., expands the PRIMAS series with a more powerful variant with spectroscopic signal processing and evaluation. In contrast to conventional portal monitors, the system not only analyses the intensity of gamma radiation, but also its energy spectrum. This allows PRIMAS Pro to distinguish natural ambient radiation from radiation sources in the vehicle load. The core of the evaluation is the Noise Adjusted Singular Value Decomposition (NASVD) method. With NASVD, the measurement curves of the radiation background and potential radiation sources are mathematically separated (eigenvalue decomposition) and then evaluated separately. In this way, background effects can be better controlled and radiation sources in the charge can be identified more precisely.
In conventional systems, the alternating shielding of natural ambient radiation caused by the moving vehicle leads to fluctuations in the measured intensity. Inhomogeneous charges — such as cavities or “holes” in the material — shield the background less and lead to an increase in the measurement signal. This increase is then mistakenly interpreted as an alarm. PRIMAS Pro reduces these false alarms because it can distinguish the characteristic spectra of natural ambient radiation and artificial radiation sources. Reducing the false alarm rate reduces operational effort and saves costs.
The PRIMAS Pro+ variant offers the same functionality as the PRIMAS Pro, but uses a significantly larger detector. By doubling the detector volume, measurement sensitivity is significantly increased.
With conventional portal monitors, higher sensitivity often automatically leads to an increasing false alarm rate. This effect is further reinforced by inhomogeneous load distributions — which are particularly typical in rail transport. False alarms are usually clarified by a repeat measurement. However, this procedure is particularly expensive on the railways.
The spectral measurement and evaluation of the Pro series addresses this problem: It enables sensitivity to be increased without increasing the false alarm rate accordingly. The PRIMAS Pro+ is therefore particularly suitable for applications where radiation sources must be reliably detected even in alternating, unevenly loaded transports.
The compact variants of the PRIMAS offer the full functionality of the PRIMAS series while reducing the housing size. The efficient device design provides a high level of flexibility during installation: overhead installation and attachment directly to existing walls are easy.
Especially in existing driveways, classic detector columns often cannot be installed due to limited space conditions, or can only be installed with considerable effort. The PRIMAS COMPACT portal monitor is designed for these situations. The system consists of two detector housings, each of which integrates two detectors with a detection volume of 13 liters.
Depending on the installation situation, individually designed light barriers or ultrasonic sensors are installed for reliable object detection in the detection area. The measurement system was operated and monitored via a touch display in a separate control cabinet.
Only two detectors are installed in the light version. This provides sufficient measurement sensitivity for many applications and makes the system a cost-effective version. If requirements change, two additional detectors can be added to the system at any time in order to increase measurement sensitivity accordingly.
Portal monitors are the radiation measurement devices with the highest sensitivity. However, due to their size and weight, these systems are not suitable for mobile use. PRIMAS Mobile removes this limitation. Thanks to the integrated battery, autonomous, mobile operation of up to 12 hours is possible.
The PRIMAS Mobile is particularly suitable for monitoring crowds at major events in order to identify potential threat scenarios involving radioactive materials (dirty bomb) at an early stage. The high level of autonomy makes it possible to flexibly adapt the location to changing conditions.
Another field of application is mobile exploration of large areas — for example with vehicles, helicopters or drones (air sensing). In this way, following nuclear disaster scenarios (e.g. satellite crash, accident or accident in nuclear facilities), a situation picture can be quickly created, for example in the form of a radiation or contamination image.
Hand-held measuring devices are used wherever radiation needs to be measured quickly and directly on site — for example during checks in disposal and recycling companies, in industrial environments, in medical facilities or at emergency organizations. They enable the reliable recording of dose rate and contamination as well as the targeted identification of radioactive sources, even under demanding conditions. Thanks to their mobility and ease of use, they are an indispensable tool for routine checks as well as for emergency situations.
Our handheld measuring devices are particularly robust, reliable and easy to operate. This makes them ideal for use by emergency organizations and armed forces.
In order to optimally cover different requirements, we offer the basic model SSM1+ with various sensor combinations. Optional external probes can be used to specifically expand the range of applications so that all three types of radiation alpha, beta and gamma can be measured. In addition to measurement variables relevant to radiation protection, environmental equivalent dose and dose rate, our devices also make it possible to reliably detect radioactive contamination on surfaces or on people.
The SSM1+ combines an ergonomic design with high durability and is designed for reliable use under demanding conditions. Control elements are arranged and designed in such a way that safe and convenient operation remains possible even with heavy protective gloves or ABC protective equipment. At the same time, the robust design effectively protects input and display elements from mechanical influences. A custom-fit silicone case provides additional protection, which absorbs shocks and impacts and can be replaced quickly and easily if contaminated.
The SSM1+ measures both local dose rate (Sv/h) and dose (Sv) and is always delivered calibrated to ensure the legal usability of the measured values. With a measurement range of 500 NSv/h to 2 Sv/h, an energy range of 65 to 1250 keV, -20 to +50 °C temperature range and around 500 hours battery life, it is ideal for tough outdoor conditions
The highly sensitive contamination probe is designed to quickly and safely find even the slightest traces of radioactive contamination. The active measurement area of 106 cm² meets the requirements of the Radiation Protection Ordinance (Annex 11). This allows people, vehicles (car/truck) including freight and luggage to be quickly checked for freedom from contamination.
The probe is connected directly to the SSM-1+ radiation meter via the standard cable and supplied with power from the device. The acoustic display can be switched on or off directly on the probe. With an energy range of 0.03-3 MeV, IP54 housing, -20 to +50 °C and a digital display range of up to 5000 pulse/s, the probe is suitable for robust applications in the field.
The Georadis RT-30N Mk2 is a portable gamma spectrometer for second-generation isotopic determination. The device has a robust, dust-proof and water-resistant aluminum housing with an ergonomic handle. It is particularly suitable for mobile use in radiological emergency scenarios and for monitoring radiation protection. It combines high measurement precision with compact design and practice-oriented functions and quickly and reliably identifies a wide range of industrial and medical radionuclides. Typical users include radiation protection officers, safety authorities and operators of industrial plants with radiation sources. Radioactive sources are quickly identified and identified. This makes it ideal for radiation checks in hospitals, at recycling and recycling sites as well as in safety-critical areas as well as for scanning people and luggage and for detecting illegal transport of radioactive materials.
An integrated GPS receiver enables precise position assignment and temporal synchronization of all measurement values. USB-C, Ethernet, Bluetooth and Wi-Fi are available for data transmission, so that measurement values and spectra can be transferred to a PC, tablet or other devices.
It can be carried discreetly in a backpack for radiological monitoring of mass events.
Robots and drones can reach areas that are inaccessible to humans because they tolerate significantly higher doses of radiation. In order to utilize this advantage in practice, radiation sensors with a larger measurement range are required.
A central requirement is also a uniform, continuous output signal: minimal fluctuations, no interruptions and no signal jumps when switching between measurement ranges or sensors.
The new RAY-SCAN series meets this requirement by covering the entire measurement range over seven decades with just a single sensor.
The uniform signal simplifies and speeds up mathematical data processing.
In contrast to conventional systems, which evaluate the detector signal using pulse counting, RAY-SCAN probes measure the detector current directly. The electronics are highly sensitive and detect very small currents in the sub-pikoamp range.
At the same time, for the large measurement range, it must also be able to process currents that are many orders of magnitude higher. Although this approach is more electronically sophisticated than the pulse counting method, it offers an extended measurement range and a significantly more uniform signal profile.
The LMS3 meter is based on a NaI (Tl) radiation detector, which is integrated into a lead shield. The connection to a PC or laptop is via USB. The included software enables convenient operation. Automatic reminders and documentation of quality assurance measures make it significantly easier to meet the requirements of an ISO 17025 accredited laboratory.
In addition, automatic spectral evaluation and reliable recording of measurement results make the measurement process easier. The software automatically determines the measurement time required to achieve the desired detection sensitivity or to reliably detect radioactive contamination up to the legal limit. As a result, a high sample throughput can be achieved.
The samples are measured using an optimized Marinelli geometry. At the factory, the device is calibrated for a sample density corresponding to water. An automatic fill level correction also makes it possible to measure different sample volumes. Optionally, the device can also be calibrated for other densities and sample matrices using computer simulations.
The TWM3 measurement probe (3rd generation drinking water monitoring system) uses a highly sensitive scintillation detector for gamma-spectroscopic examination of drinking water.
A measurement volume of 34 liters and massive lead shielding with 55 mm wall thickness ensure very high measurement sensitivity and short response times.
Through automatic, periodic spectral evaluation, the TWM3 enables continuous online monitoring of drinking water supplies and wastewater flows.
Seibersdorf Laboratories offers tailor-made special containers for the transport and storage of radiation sources and radioactive substances.
These containers were originally developed and manufactured for personal use, as they were not available on the market in the required configuration.
The shielding containers are now also available to external customers. The focus is usually on absorbing and shielding gamma radiation. We also offer containers for neutron emitters which, in addition to gamma radiation, also effectively shield neutron radiation through appropriate moderation and absorption.
