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November 2018

Guide to radon monitoring in the workplace

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workplace

Under the EU Radiation Protection Directive, 2013/59/Euratom, which entered into force in February 2018, employers must determine the radon concentrations in the workplace and take appropriate measures to address radon levels above the national limit for radon. With the introduction of the new Directive, questions often arise as to how radon monitoring in the workplace should be handled.

How do we measure radon in workplaces and what should we be considering?

It is basically easy to measure radon. You order radon detectors, deploy them, record data, collect the detectors and send them to the radon laboratory, which will return a report by e-mail or online. However, there are several aspects to consider, such as how many radon detectors are needed for a reliable measurement. Another question is how the work can be done as efficiently as possible. As the biggest cost of radon measurement is the time it takes to deploy the detectors, record the data, and then retrieve them again, it is vital to ensure efficiency and safety at all stages of the process.

Requirements for radon monitoring in a workplace

To make efficient use of time and arrive at a correct measurement, the person monitoring a workplace should make the following demands of the laboratory where the radon detectors were bought. This applies whether you do the job yourself or use an external consultant. Measurements should be taken with radon detectors from an accredited radon laboratory.

Ensure that:

– the laboratory is accredited according to ISO 17025 for measuring radon in indoor air
– the delivery time for detectors is within 2-3 days of ordering
– the delivery time for electronic analysis reports is within one (1) week of the detectors reaching the laboratory
– the laboratory has a web application which allows measurement details to be entered and results to be downloaded, and

  • measurements to be filtered on e.g. address, property name, order code etc.
  • consolidated reports to be downloaded in PDF format
  • can be used on a tablet or other mobile device in the field.

It is also important to make the radon measurements known to your own staff. Information material on radon and the planned measurements should therefore be distributed before monitoring starts. It is also important to inform the cleaning staff if the service is outsourced. The radon detectors need to be placed securely so they cannot be moved or otherwise interfered with during monitoring (cable ties could be used).

How many radon detectors are needed to monitor radon in the workplace?

For radon measurement in the workplace, Radonova recommends following guidelines from IRMA (the International Radon Measurement Association). You will then meet your national requirements as well. The advantage of IRMA’s guidelines is that their recommended measurement procedure helps to save time.

The following locations must be included when measuring radon:

– Rooms and locations regularly used for more than four hours per day
– All underground/basement locations or other locations used by anyone for more than 50 hours per year where there is a risk of radon leakage
– Any relevant locations/rooms at basement and ground floor level. In larger spaces, deploy at least one detector per 150 m2.
– On higher floors: At least two detectors, and at least one per 250 m2.

What happens if you are over the reference value?

If it turns out that you are over the reference value, you should start by measuring the radon concentration during working hours (a shorter period). You could do this with Radonova’s Duotrak radon detector, for example. Note: Because work premises are usually ventilated more during working hours, the radon level could be lower at this time.

If the workplace is still over the reference value, you must take steps to reduce the radon level. This is normally done by controlling the ventilation. In these cases, however, we recommend contacting a radon consultant who can investigate where the radon is coming from and suggest appropriate action.

Radonova launches brand-new vacuum packs for radon detectors

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Radonova are launching a new vacuum packaging solution.

The new packaging enables us to vacuum seal radon detectors during transit which helps us to improve quality even further. This ensures safe transit and analysis can be done without radon leakages. The packaging technique will help prevent damaging effects from external factors on the measurement results.

With radon monitoring it is crucial to be able to seal the detectors to ensure the test results are reliable.

Vacuum packs enable more efficient transport and storage

“In addition to being completely radon-tight, the new vacuum pack is smaller. This means less bulky shipments and more efficient storage. This particularly benefits our distributors and international customers. Of course the new packaging also has environmental benefits as it uses less material. Another advantage with the new packaging technique is that bags damaged in transit can easily be spotted”, explains Radonova’s laboratory manager, Oscar Wännerud.

“We have always used very high quality plastic films but by using our new machine and a more automated process it means we are now taking a further step towards the optimum packaging solution” says Wännerud.

WHO estimates that up to 14% of all lung cancer cases are caused by radon. Find out more about the risks associated with radon and how to measure it here.

Vacuum

Radonova’s radon measurements get top marks from Europe’s leading radiation protection body

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Radonova Laboratories has achieved excellent results in reference tests.

The reference tests were finally conducted by the German Federal Office For Radiation Protection (Bundesamt für Strahlenschutz – BfS). Comparative tests of four different radon samples show us that Radonova’s results in all cases differ. This with less than ten percent from the respective reference value.

The BfS is Europe’s leading player in the calibration of radon measurement equipment. One of the few accredited to calibrate based on ISO 17025 standard.

All radon doses are exposed to different levels of radon in this current reference tests. Then after that they are compared with the official reference values that are specified by BfS.

“Radonova has consequently been participating in comparative tests of this kind for many years, and we achieve consistently good results. The latest test results are also a confirmation that we are right at the forefront when it comes to reliable radon measurements”. Says the CEO of Radonova Laboratories, Karl Nilsson.

reference tests

“The comparative tests by the Bfs are probably the most demanding anywhere. They certainly set extremely high standards at all stages. It feels good to have our capacity confirmed by an actor like BfS. It is important that our customers should always associate Radonova with the highest quality and reliability”. Ads Radonova Laboratories’ radon specialist José-Luis Gutiérrez Villanueva.

For more information, contact Karl Nilsson, CEO of Radonova Laboratories AB.

Read more about radon and radon measurements here.