Device Performance Test (DPT)
A DPT is an exercise that proves you are proficient in using your chosen analytical device type. It requires that the measurement device be exposed to a known amount of radon gas in an NRPP-approved radon chamber facility. PLEASE NOTE: For any certified professional utilizing an analytical device (continuous monitor or electret with reader), a performance test MUST be completed prior to your INITIAL certification). Please read below under ‘Device-Specific Training’ for information on how to renew your certification with an analytical measurement device.
The device performance test process is as follows:
- Ship the analytical device(s) (only one of each model you own/use) to an NRPP-approved test chamber.
- The test chamber exposes the device to a known radon concentration for at least 48 hours and ships it back to you; the average radon concentration in chamber will not be provided.
- You analyze the data and report the result to the test chamber on their analysis reporting form.
- The test chamber compares your result to the actual average radon concentration to which your device was exposed and sends you a Performance Report detailing your accuracy.
- You must submit the Performance Report to NRPP as part of the initial certification process. Once certified by NRPP with your device(s), you can use your analytical device knowing you can provide accurate results to your customers.
NRPP-Approved Secondary Test Chambers
Please contact one of the chambers below to schedule your performance test.
Bowser-Morner, Inc. | 937.236.8805 | bowser-morner.com
KSU Radon Chamber | 785.532.6026 | ksuradonchamber.org
Radiation Safety Institute of Canada | 800.263.5803 | radiationsafety.ca
FOR CERTIFICATION RENEWAL WITH ANALYTICAL MEASUREMENT DEVICES: If you have successfully completed a Device Performance Test (DPT) for your INITIAL certification, you can fulfill your 2-year renewal requirement by completing one of the following courses for your specific device in lieu of performing another DPT. Completion of device-specific training for your specific device is only required once, not every two years.
Classroom, Home Study and Web Based Courses
Annual Device Calibrations
Each of your analytical test devices must be carefully calibrated to a known radon concentration once a year. You must submit a proof of calibration on an annual basis for EVERY device registered with NRPP, in order to apply for and maintain your certification. The calibration date will represent the anniversary date by which future calibrations are to occur.
The chamber operator or manufacturer most commonly performs the calibration without any input from the user/owner of the device(s). The device(s) are serviced and sent back to the owner with a certificate showing that calibration was completed successfully. This certificate must be submitted to NRPP for each registered device.
The proof of calibration must show:
- Manufacturer name
- Model number
- Serial number
- Date of calibration
- Name of facility performing calibration
- Calibration results