Radon surveys and mitigation
Radon surveys and
mitigation
in Switzerland
FOPH-recognised radon measurement serviceHave you never measured radon, or do you already have results? Robert Gaisch assesses your situation, surveys the building and, where necessary, supports you through mitigation and confirmation of the results.
Understand before acting
Radon at a glance.
Radon is a naturally occurring radioactive gas from the ground. Invisible and odourless, it can accumulate in rooms, particularly those in contact with the ground. According to the FOPH, radon exposure is the second leading cause of lung cancer in Switzerland after smoking.
An initial assessment of your building and needs helps us choose a suitable approach. A survey over approximately one week helps identify a problem and understand how radon moves through the building; passive detector measurements extend the assessment where warranted.
Sources: FOPH — Radon · Measurement protocol
Our approach
From survey
to results.
Assess
Location, building characteristics, occupancy and timeframe: together, we define a suitable approach.
Survey
Approximately one week of simultaneous measurements in all rooms in contact with the ground to understand radon entry and movement.
Mitigate
If a problem is identified, we prepare a suitable proposal and carry out the work, monitoring concentrations before and after the intervention.
Document and confirm
A report presents the work and its results. A recognised measurement using passive detectors is arranged to confirm them over a longer period.
If concentrations are low or results are intermediate, passive detectors are proposed after the survey to extend the assessment over a longer period.
One point of contact
One person,
from measurement to mitigation.
Robert Gaisch carries out radon surveys and mitigation work. Measurements in different rooms help identify likely entry points and understand how radon moves through the building, providing the basis for a suitable solution.
Concentrations are monitored before and after the work to show its effect and adjust the system if needed. A mitigation report presents the interventions and results. After the work, a passive detector campaign is arranged to confirm these results through a recognised measurement, during the applicable period.
Based in Corcelles, in the canton of Neuchâtel, Robert discusses the arrangements with you according to the municipality and your project’s needs.
Meet Robert GaischGuidance for your decisions
What the regulations require.
- The reference level of 300 Bq/m³ applies to the annual average concentration in rooms where people regularly spend several hours a day, including homes, classrooms and offices.
- For new construction or alterations, radon protection must be included in the project. Check which documents are required with the authority issuing the permit.
- Where a recognised measurement is needed, we incorporate it into the process according to the protocol applicable to the rooms and measurement period.
I have never measured radon. Where should I start?
Describe your building and what you need. We assess the situation based on the location, construction, room occupancy and your timeframe. We then suggest an in-depth survey or measurements using passive detectors.
How long does a survey take?
Electronic monitoring runs for approximately one week. The devices simultaneously record concentrations in rooms and other spaces in contact with the ground, with additional measurement points on upper floors where needed. The analysis helps us understand the situation and identify the appropriate next steps.
What happens if concentrations are low?
When concentrations are low during the survey, passive detectors can confirm the result over a longer period. They are also offered when results call for further assessment.
I already have results. Do I need to start again?
No. We start by reviewing the available results. A technical survey may then be needed to identify likely entry points and understand how radon spreads before preparing a mitigation proposal.
Does Robert also carry out the work?
Yes. Robert Gaisch plans and carries out radon mitigation work himself. Monitoring before and after the work, the mitigation report and arranging confirmation using passive detectors are part of the process. The scope of each service is set out in the quotation.
How is the effect of the work checked?
Concentrations are monitored before and after the work. The mitigation report presents the results and measurement conditions. A passive detector campaign is then arranged according to the applicable schedule to confirm the results through a recognised measurement.
An initial discussion
What about yourbuilding?
A measurement, a result, a question. Let’s start there.