Document: NRC Regulatory Guide
Document ID: 377c2606-4b7c-4c7f-997d-37aed1680452
Document Type: regulatory_guide
Title: Performance, Testing, and Procedural Specifications for Thermoluminescence Dosimetry: Environmental Applications + HISTORY - HISTORY 10/2018 – DG-4019 , Proposed Revision 2 11/2014 – Periodic Review of Revision 1 – Revise (Rev. 2)
Source: NRC Regulatory Guide Division 4
Source URL: https://www.nrc.gov/docs/ML1808/ML18087A169.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-4.13
CFR Part: 
CFR Title: 

Content:
detected, calculate the amount of the FRD. To do so, subtract the baseline background dose from the normalized net field dose. Once a positive FRD is identified, only subtract the baseline background dose, not the 3σ standard deviation. 4. Investigate and document the source of any apparent detectable FRD. f. Determine the annual FRDs. 1. For each monitored location, first calculate the annual net field doses by summing the normalized net field doses from each monitoring period (e.g., quarterly). 2. For each monitored location, subtract the sum of the baseline background dose and the quarterly MDD from the annual normalized field dose. a. If the value is negative, there is no detectable FRD. b. If the value is positive, FRD is detected. 3. If an annual FRD is detected, calculate the amount of the FRD. To do so, subtract the baseline background dose from the normalized annual net field dose. Once a positive FRD is identified, only subtract the baseline background dose, not the 3σ standard deviation. DG-4019, Appendix A, Page A-4 3. Quality Assurance ANSI/HPS N13.37-2014 describes the following quality assurance methods that are suitable for performing quality assurance: • end-user quality assurance checks/measures • annual audits of the end user by independent assessors • annual blind spike testing • triennial audits of the processor A processor laboratory accreditation program is not necessary unless the quality assurance program routinely identifies unsatisfactory results.