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July 2019

Measuring radon in water – Radonova gets top marks in EU test

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Radonova Laboratories has achieved excellent results in the comparative EU test “REM 2018”. The test measures the incidence of radon in water and compares participating laboratories’ analytical results with a reference value. Radonova’s analysis had an average deviation of 3.1 per cent in relation to the reference value. Deviations up to 15 per cent are judged to be an acceptable result.  

“This is a large-scale international test that demonstrates that Radonova’s method of measuring radon in drinking water is reliable and very precise. Radon in water does not necessarily present a major problem. However, radon that evaporates into indoor air when, for example, we take a shower, wash up or do laundry, can be a health hazard. For this reason it is important for studies and tests of this kind to be conducted,” comments Tryggve Rönnqvist, technical manager at Radonova Laboratories.

The comparative test covers a total of 101 participating laboratories, some of which have been involved in more than one analysis. The full name of the test is “REM 2018 radon-in-water proficiency test”.

About radon gas in water     

Radon in water easily evaporates into the air. This in turn can contribute to raised radon levels in the indoor air, and leads to an increased risk of lung cancer. Radon levels of 1,000 Bq/l can add roughly another 100 Bq/m³ to the indoor air. It is primarily radon gas in drinking water from drilled wells that must be measured, in order to ensure that the water does not contain dangerous levels of radon.

For further information about radon in water, visit https://radonovalaboratories.com/questions-and-answers-about-radon-in-water/

ATMOS: New version of the world’s lightest and most sensitive radon sniffer

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Radonova Laboratories is launching a completely new version of the radon sniffer ATMOS. The new version weighs 4.5 kg , has a new design, several new features and enhanced software functionality. The new ATMOS is designed to enable even faster and more efficient radon measurements in the field. The latest version of ATMOS is now commercially available.
The instrument has been developed to meet the needs of an international market that is growing and demanding modern, user-friendly instruments for radon measurement.

Increased demand for radon measurement

The need for reliable and flexible field instruments has increased as more and more homes and workplaces show increased levels of radon.
In the case of a radon inspection, the user normally searches for the leakage of radon and therefore needs an instrument that can quickly display the correct radon content. Therefore, there is sometimes a need to measure the variation of radon every minute and in various contexts to clarify daytime variations. In this circumstance, ATMOS makes the radon consultant’s everyday life easier and more efficient.

Fast and reliable measurement reports

ATMOS is unique because it is the most sensitive and lightest instrument that can be used both in the field and in a laboratory.
– Thanks to its light compact format and general portability, ATMOS can easily be taken out for radon inspection of properties. The updated software makes it very easy to extract data and quickly create reliable measurement reports. The latest version of ATMOS enables radon consultants to conduct considerably more measurements compared to other instruments on the market in a 24 hour period, says Patrik Starck, technical physicist and Radonova’s development manager.
– Compared to previous versions, the instrument has essentially been completely redesigned. The only part that remains is the measuring chamber. That particular part is based on a proven technique and it is doubtful whether you can improve the design, continues Patrik Starck.

Growing international market

Previous versions of ATMOS have mainly been delivered and used in Sweden. With increased international demand, Radonova has scaled production at the company’s plant in Uppsala.
– It is of course gratifying when we now see clear demand outside Sweden. The new ATMOS has been launched after several years of research and development. The positive response from the market is an acknowledgment that more and more people and businesses are seeing the benefits of the instrument, comments Karl Nilsson, CEO, Radonova Laboratories.

New ATMOS specifications:

  • Light and compact, simplifying field work
  • Weight: 4.5 kg Size: 500 x 385 x 220 mm (W x H x D)
  • New software enables fast and secure measurement reports
  • The pulsation chamber has high sensitivity and a fast response time
  • Chirp function – listens to how high the content is in confined spaces
  • Communication to PC via USB
  • > 10 year history for measurement data

The basic version of ATMOS costs SEK 89,450 excluding VAT.

Risks with radon

Radon is a radioactive gas that forms naturally when the substance Uran238 decomposes. Thereafter, the radon gas, in turn, decomposes into radond daughters. Radon daughters are radioactive metal atoms that get stuck in our airways during inhalation. When this disintegration occurs, radiation is emitted from the radon daughters that can damage the cells in our airways and lungs. In the worst case, they can cause cancer. According to the World Health Organization (WHO), 3-14 percent of all lung cancer cases are caused by radon depending on where you live. Therefore, WHO recommends a radon level limit of 100 Bq/m3.

ATMOS product description

ATMOS has a built-in dehumidification to ensure that the moisture content of the air does not interfere with the measurement. The dehumidifier works in saturated moisture at temperatures up to 40ºC. 40 degrees C. ATMOS also shows a table of the 10 latest measured levels per selected integration time. To each calculated radon measurement the user is presented with the associated uncertainty in measurement. The dehumidification of the air in ATMOS takes place automatically and is fully integrated in the instrument. The atmospheric pressure, temperature and humidity of the air are shown in the display and stored together with each measurement. Due to the fact that the measurement value is displayed directly at a new measurement, the user does not have to wait for the end of the measuring cycle.
ATMOS includes software for analyzing measurement data. The display is a 3.5 ? touch screen that shows the radon content in Bq/m³, the uncertainty since the start time of the measurement, integration time, measurement time, time and date. In addition, a field storage bag with detachable lid, 24VDC mains adapter and 3 meter hose with instrument adapter are included. The readout and reporting software works in Windows and is included with the instrument. The software is used to read out stored measurement data to evaluate time variations and energy spectrum. In addition, the software is compatible with older versions of Windows.
The instrument measures the alpha decay of radon and its daughters and is completely insensitive to gamma radiation. The alpha energies of the different isotopes are detected and the radon concentration is displayed in a touch display on the instrument. The user selects the desired integration time, the longer the time the more accurate the measurement. The measurement energy spectrum is stored every 10 minutes during the measurement and always gives the user the opportunity to quality-assure the measurement data. A measurement value is displayed directly at a new measurement and the user does not have to wait.

More information about new ATMOS is available here»
More information on radon and radon measurement can be found here»

How many radon detectors are needed to measure a workplace?

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Since the EU’s new radiation protection directive (2013/59/Euratom) came into force in 2018, it is mandatory that employers should be aware of radon levels in the workplace. The new directive has entailed new national laws in member states, which has resulted in an increasing number of workplaces measuring radon levels. However, at the same time, there is a lack of knowledge about how a safe and reliable radon measurement should be conducted.

As the world’s leading radon laboratory, Radonova Laboratories has produced a “how to guide” that can help employers carry out radon measurements correctly.

First get an overview – long term measurement by an accredited laboratory

If you have never measured radon before, you should start first with a preliminary measurement by an accredited laboratory. These measurements should be carried out over a three-month period in order to obtain an annual average of the radon level. Note, this initial measurement must be performed during specific measurement seasons in some countries.

The main cost is not radon detectors – make sure you get it right from the start

When ordering a radon measurement, a common question is how many radon doses are needed. Unfortunately, many countries do not have an official methodology detailing how a measurement at a workplace should be carried out. And if there is, they are usually very difficult to interpret for most employers. Therefore, it can be hard to estimate the number of radon doses required. For this reason, we recommend that employers who measure radon levels use the international methodology recommended by The International Radon Measurement Association (IRMA). Yes, it will result in more measuring points than is suggested by a national organisation, but by following IRMA guidelines you do not risk missing certain areas of the workplace, which can result in time-consuming remeasuring.

The main cost of workplace radon measurement is in the deployment and collection of detectors and the investment in radon consultants if remeasurements are required. In the event of elevated radon levels, the commissioned radon consultant will be in a position to work more efficiently if more points have been measured at the outset. So, by following IRMA guidelines, you will have access to relevant documentation which enables you to conduct measurements which are appropriate for your business.

Rules for calculating the number of radon detectors.

The guidelines in IRMA’s method description for calculating the number of radon doses required are straightforward. By following them, you will also meet national criteria for measuring radon in workplaces.

Here’s how to calculate the number of radon detectors based on IRMA’s guidelines:

• Radon detectors should be placed in rooms where employees spend more than 4 hours per day and in basements where staff stay more than 50 hours a year

• For larger rooms and premises in the ground floor or basement, a radon detector per 150 m² should be placed

• For larger rooms and premises on other floors, a radon detector per 250 m² should be placed

• Use at least two radon detectors per building and floor

• Always measure in rooms where you and your colleagues spend the most time

If you have additional questions about the required number of radon doses and how to conduct a radon measurement, why not contact Radonova’s specialists.