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Radiation zones can be dangerous and often need proper checks in the form of area surveys.
An area survey is a step-by-step process to scan and check for radiation in a specific zone. It is done to check if a space has any unsafe radiation levels.
These surveys help protect workers and meet safety rules. They are almost compulsory in places like labs and nuclear sites.
But how do you do it? This guide will show you the entire process.
Tools You Need
Here is a list of tools you will require for the check:
- GM survey meter or scintillation meter
- Swipe paper – usually 100 cm²
- Protective gloves
- Radiation survey form or logsheet
- Calibrated source for instrument check
Make sure all the tools are tested and calibrated regularly.
How to Conduct a Radiation Area Survey
Start with a plan
You need to begin with a clear area, so start with mapping out the entire space. Mark common spots where contamination might be – like workbenches and storage areas. Write it down.
Scan with the meter
Now, this is where the actually scanning happens. You need to use a meter and hold it close to the surface. Move slowly and keep checking the readings. If it is more than twice the normal level, mark it.
Collect wipe samples
After that, you need to wipe all the 100 cm² areas like handles and PPE bins. Focus on areas that may hold contamination and send the samples for lab testing if needed.
Note readings
This step is very important. You need to write down all values. If a reading is more than twice the background level, mark it for clean-up.
Act if needed
If you find any level of contamination, clean the area. Repeat the survey until it shows safe results.
Keep records
And remember to document every radiation area survey with time, date, person’s name, meter readings, and actions taken.
Final Tip
Break large labs into survey zones and cover one zone at a time. It keeps things clear and manageable.
A proper Area Survey is not just paperwork. It is real protection for real people. If you are unsure where to begin – experts like INRAD can help guide your survey process with the right tools and advice.
