Pennsylvania Code › Title 25 - ENVIRONMENTAL PROTECTION › Part I - Department of Environmental Protection › Subpart D - Environmental Health and Safety › Article V - Radiological Health › Chapter 240 - RADON CERTIFICATION › Subchapter G - QA REQUIREMENTS › Section 240.605 - QA requirements for testing using secondary devices

Current through Register Vol. 54, No. 28, July 13, 2024
(a)
CRMs
						for secondary testers.
(1)
Calibration.
Each Department-listed CRM must have a current
						calibration. To have a current calibration, the CRM shall be calibrated in a
						Department-approved calibration facility within 1 year from the date of the
						previous calibration and when alterations or repairs are made to the CRM. A
						current calibration certificate shall be retained for each monitor.
(2)
Check source counting.
For a CRM with a check source, check source counting shall be documented and
						completed with that check source prior to each test.
(3)
Routine instrument
						checks.
Before and after each measurement, the CRM shall be checked
						according to the manufacturer's instructions. For each check, all of the
						following shall be verified:
(i) The correct
						input parameters and the unit's clock or timer are set properly.
(ii) The pump's flow rates are within the
						range of the manufacturer's specifications.
(4)
Data collection log.
(i) CRM data shall be tracked on a form that
						contains all of the following:
(A) The CRM
						serial number.
(B) The exposure
						dates and times.
(C) The test
						result.
(D) The address of the
						building tested.
(E) The test
						location in the building.
(F) The
						name of the tester who placed the CRM.
(G) The name of the tester who retrieved the
						CRM.
(H) The calibration, repair
						and Department listing dates.
(ii) For a CRM without a check source, the
						data collection log must also contain all of the following intercomparison
						measurement information:
(A) The
						intercomparison device serial number.
(B) The RPE value or RPD value.
(C) The intercomparison measurement
						result.
(5)
Intercomparison measurements.
An intercomparison measurement
						shall be performed for each CRM without a check source.
(i) Intercomparison measurements shall be
						made at least every tenth test with another Department-listed passive device
						that is analyzed by a Department-certified laboratory or with another CRM with
						a hard copy printout. The intercomparison measurements shall be distributed
						systematically throughout the entire population of test locations. Original
						printouts or Department-certified laboratory results, or both, shall be kept
						for each intercomparison. Each intercomparison measurement must be performed
						with the devices side by side for the measurement for at least 48
						hours.
(ii) When performing
						intercomparison measurements, the RPD shall be used to track performance. The
						RPD value shall be tracked using control charts from "Protocols for Radon and
						Radon Decay Product Measurements in Homes," EPA 402-R-92-003, May 1993,
						Appendix B, Exhibits B-2 and B-3.
(iii) If the RPD value exceeds the control
						limit, the CRM may not be used for radon measurements until the problem is
						identified and corrected. If the RPD value exceeds the warning level, the
						criteria in the "Protocols for Radon and Radon Decay Product Measurements in
						Homes," EPA 402-R-92-003, May 1993, Appendix B, Exhibit B-5, shall be
						followed.
(iv) In addition to the
						control charts, intercomparison measurements shall be documented on the CRM
						data collection log.