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Frequently asked questions about radon testing and radon work

High levels of radon at home – how can I reduce the health risk? Where can I buy radon testing services for my home? How do I know if radon testing should be performed at my place of work? Have a look at the frequently asked questions and the answers to them, compiled on this page.

 

Frequently asked questions

Frequently asked questions about radon testing and radon work

Here are some common questions about radon.

 

Question:

We have found radon concentrations of over 1,500Bq/m3 in our home in Kouvola, Finland. What can we do to reduce the risk to our health?

Answer:

According to the Finnish Radiation and Nuclear Safety Authority, radon extractor fans and radon wells are the most efficient solutions to indoor air radon issues. The best approach is always dictated by structural solutions and soil type. Give us a call, and together we can find out the best solution for your home. We perform all types of radon work currently available throughout Finland.

Read more about our radon services here.

 

Question:

Where can I buy radon testing services for my home? I live in a detached house in Lahti, Finland.

Answer:

There are various options for getting your home tested for radon. You can easily order radon gauging jars here or in our online store at www.radontalkoot.fi. We always recommend the gauging jars as a primary method of radon testing. 

 

Question:

We have performed radon testing on our home located in Lempäälä, Finland. We discovered levels of radon well over the threshold values. We had radon work done, and now the concentrations of radon in our home measure at 62Bq/m3. I’m concerned about radon safety at my workplace, as a colleague of mine passed away from lung cancer two years ago, and he didn’t even smoke. What would be the best way to approach this issue during the next Occupational Health and Safety board meeting?

Answer:

The radon work carried out in your home helped achieve low enough levels of radon to be considered excellent. Your permanent place of work in Tampere is located in a zone where radon testing is compulsory according to section 45 of the Radiation Act (592/1991). Operators located in Tampere must assess the radiation exposure caused by radon according to the ST 12.1 guideline. After smoking, radon is the second greatest cause of lung cancer.

Read more about the legally decreed radon testing at places of work here.

 

Question:

We have detected levels of radon exceeding 1,000Bq/m3 in our apartment. The apartment is located on excavated base rock in Kotka, Finland. I’ve read that a radon well could help decrease the levels of radon. 

Answer:

Kotka and the surrounding areas are located in a high-risk radon zone. A radon well will only work for very coarse soil, and as part of a solution package it cannot be offered for all types of sites. Since your apartment is located on excavated base rock, it is probably not even feasible to install a very deep radon well in the soil. There are various other highly efficient solutions for radon extraction that will be at least as effective as a radon well.

Read more about our radon extraction solutions here.

 

Question:

We are currently conducting the legally decreed radon testing at our workplace in Kajaani, Finland. I am the head of Occupational Health and Safety at my workplace. During one of our meetings, a very eager foreman pointed out that it would be easy to perform the radon gauging ourselves. Is it true that we could do this ourselves?

Answer:

Radon exposure testing is governed by the Radiation Act, radiation regulations and the ST guidelines. It is possible for operators to carry out the testing themselves, provided that compliance with the abovementioned documents is ensured.

We perform legally decreed radon testing throughout Finland. With us, as head of Occupational Health and Safety, you can rest assured that the analysis results will be accurate and our gauging methods appropriate. We will document, fix and photograph every gauging location we implement. The price of this service throughout Finland is determined by the number of gauging points implemented. If required, we can assist you in all your radon-related issues. Most workplace radon testing is implemented by external radon experts.

 

Question:

Our family lives in a detached house in Riihimäki, Finland, and we used to have a Ramon 2.2 radon gauge on loan. After a 48 hour gauging period, the device gave a result of 382Bq/m3. Our house was built in 1986. How should we react to this result?

Answer:

The Ramon 2.2 gauge is in many cases a highly usable piece of equipment, but the results given by it can have a considerable margin of error depending on the time of the gauging period. Regionally, Riihimäki has presented high levels of radon, and it has therefore been designated a high-risk zone. A short gauging period of 48 hours does not fulfil the requirements set by the Ministry of Social Affairs and Health, and therefore we recommend that you have official radon testing performed in your home.

Read more about our official radon testing here.

 

Question:

I have been told that the Lahti region has high levels of radon. How can I reduce the levels of radon in the indoor air of our home? After taking the necessary measures, I am considering renting a quick radon gauge to ensure the safety of our home.

Answer:

The need for radon work should be assessed site-specifically, and it is hard for us to give general instructions without examining your property. Air containing radon gases typically leaks into apartments through cracks in the building’s base floor, so sufficient insulation is key. Radon work always aims to block the flow of radon gases into indoor spaces. The operation of a radon piping system installed during the construction of a building can be boosted with the attachment of an extractor fan. We would require sufficient background information prior to performing any radon work.

 

Question:

We are in the process of building a detached house, and we would like to know what kind of a radon piping system we should install beneath it. What kind of piping should we use, and how should it be installed?

Answer:

The piping used for radon piping systems is usually the same, double-cased piping used for covered drains. It is recommended that an exhaust vent is installed reaching all the way above the roof covering. A structural designer will determine the installation method best suited for your site. Further instructions can be found in the RT guideline on protection against radon RT 81-10791. The guideline provides instructions on the planning, dimensions and installation of the piping system. If levels of radon remain high, an extraction fan may be installed into the exhaust vent afterwards. We recommend that you test for radon during the winter following your home’s completion. Make sure to also adjust the possible extractor fan to ensure optimal energy consumption and radon extraction.

Read more about construction and radon here.

 

Question:

High levels of radon have been detected at my place of work, what should I do?

Answer:

At first, you should ensure that the Finnish Radiation and Nuclear Safety Authority (STUK) has been notified of the high concentrations of radon at your workplace. In case the levels of radon regularly exceed 400Bq/m3, actions should be taken to reduce the amount of radon. Radon testing should be performed again after radon work has taken place to ensure its success. In case it is not possible to reduce the amount of radon in the facilities, working hours in said facilities must be limited. Performing exposure testing during work is usually sufficient for gaining the proof required by the Finnish Radiation and Nuclear Safety Authority that threshold values are not exceeded.

Question:

I work as a school teacher. How do I know if radon testing should be performed at my place of work?

Answer:

The threshold values for radon in preschools, schools and public administration facilities is 400Bq/m³, regardless of the amount of time spent in he facilities. Radon testing is compulsory in various Finnish cities, and we highly recommend testing for radon even if it is not yet compulsory in your area. The set threshold values for radon are valid throughout Finland and all operators must be compliant with them. All operators must ensure that concentrations of radon remain below 400Bq/m³. Schools typically have basement facilities, and testing for these is always compulsory.

Read more about the legally decreed radon testing here.

Question:

We are about to buy a house in Järvenpää, Finland. How do we know the house has no issues with radon?

Answer:

Järvenpää as well as the entire Keski-uusimaa region are located in a high-risk radon zone. The only way to detect radon is to perform a radon analysis. We recommend signing the radon contract for property sales, or if the sale has already taken place, performing radon testing on the house as soon as possible. Radon results in many disagreements in property sales, and the health hazard caused by it should be taken seriously.

 

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