Scintillation detectors used for regulated purposes must meet performance and quality standards. This appendix summarizes what each covers; obtain full texts from issuing bodies for compliance work.
IEEE NPSS-maintained US standards, mostly also IEC. N42.32 alarming PRDs. N42.33 portable survey/exposure-rate instruments. N42.34 RIIDs (most DHS-referenced). N42.35 portal monitors. N42.38 spectroscopic portal monitors. N42.42 XML data format (most DHS-referenced). N42.43 mobile/transportable systems. N42.48 spectroscopic PRDs. N42.49A/B PERDs, alarming/non-alarming. N42.53 backpack gamma/neutron systems with GPS. N42.55 portable X-ray imaging.
Radon/radon-decay-product instruments. 61577-1 general specs. 61577-2 radon-only. 61577-3 decay-product. 61577-4 STAR calibration-atmosphere equipment. Scintillation (alpha cells, ZnS:Ag) is a niche; electret, charcoal, and semiconductor methods dominate.
IEC 61526: active personal dosemeters for X/gamma/neutron/beta dose equivalents. 2024 edition adds Hp(3) (eye lens) to prior Hp(10)/Hp(0,07) scope; some electronic dosimeters use scintillation for energy-discriminating dose measurement.
IAEA safety/safeguards documents govern materials accountancy and facility safety. GSR Part 3 basic safety standards. Safety/Technical Reports Series application guidance. Nuclear Security Series security-context detection (ITDB reporting, border-control). SMR Technology Catalog drives advanced-reactor monitoring specs.
Governs NRC-licensed facilities. 10 CFR 20 dose limits/monitoring. 10 CFR 50 facility licensing. 10 CFR 52 SMR design certification (used by NuScale, 2023). Reg. Guide 1.97 accident-monitoring instrumentation. Reg. Guide 4.15 monitoring QA.
EU Directive 2013/59/EURATOM sets the radiation-protection framework; member states implement it variably (Germany: StrlSchG; France: ASNR; UK: ONR). IEC standards (D.2) serve multi-country deployments as the common reference.
ITRAP+10 (EC JRC, DHS DNDO, DOE, IAEA) tested nine homeland-security detector classes against N42/IEC standards (2016, EUR 27958). DHS's GRaDER program and national successors continue this as the procurement benchmark.
Sealed sources ship under US 49 CFR or international IATA/IMDG. 49 CFR 173 (subpart I) Class 7 packaging/labeling/documentation. IAEA SSR-6 international equivalent. Built-in calibration sources (e.g., Am-241 pulsers) usually ship as excepted packages; verify with manufacturer.
Calibration must trace to a metrology institute: NIST (US), NPL (UK), PTB (Germany) primary; LNHB (France), KRISS (Korea), NMIJ (Japan), and NIM (China) also major. Institutes are mutually recognized (CIPM MRA); choice is customer preference, not technical.
BNC in Practice
Specify standards by number and calibration traceability in writing; "compliant with applicable standards" alone causes problems at commissioning.
Trends to track: N42.42 XML becoming the default data-export format; cybersecurity requirements (IEC 62443, IEC 81001, NRC cyber rules) layering onto detector standards; advanced-reactor-specific instrumentation standards emerging as SMR/microreactor deployments accelerate.