EN ISO 22017:2020 PDF

Overview

EN ISO 22017:2020 (ISO 22017:2020) - "Water quality - Guidance for rapid radioactivity measurements in nuclear or radiological emergency situation" - provides practical guidance for testing laboratories that must perform rapid radioactivity analyses on water samples after a nuclear or radiological incident. The standard focuses on adapting routine laboratory methods to deliver reliable results quickly so decision makers can apply protective actions and minimize public radiation dose. Field screening techniques are explicitly excluded.

Key topics and technical requirements

• Objective and context: Guidance on defining the objective of rapid measurements in emergency scenarios, including potentially high contamination levels and comparison to operational intervention levels (OILs) from IAEA, EU or national authorities.
• Adaptation of routine methods: Use or modification of established radioactivity methods (with shorter turnaround) where possible; recognition that validation parameters for routine use may not fully apply and that uncertainties may increase.
• Screening strategy: First-step screening using gross-alpha/gross-beta tests (adaptations of ISO 10704 and ISO 11704) and gamma spectrometry (adaptations of ISO 20042, ISO 10703 and ISO 19581) to identify most contaminated samples and radionuclides.
• Specific radionuclide methods: When needed, adapt and apply targeted methods for radionuclides (e.g., 90Sr per ISO 13160) as outlined (see Clause 2 and Annex A).
• Sampling and sample volumes: Guidance on sampling, appropriate sample volumes and counting times related to intervention levels to achieve meaningful detection and decision thresholds.
• Laboratory preparedness and management: Requirements for sample management, staff protection, material and staffing logistics, and quality management adapted to emergency throughput.
• Result reporting and uncertainty: Reporting formats, evaluation of uncertainties, and how results are used to assess compliance with intervention levels (WHO, national, or IAEA guidance).

Practical applications and users

This standard is intended for:

• Environmental and radiological testing laboratories preparing for emergency response
• Water utilities and drinking-water laboratories needing rapid assessments of contamination
• Public health agencies, emergency response teams, and regulators who rely on fast, reliable measurements to set protective actions
• Nuclear facility operators monitoring effluents or affected water bodies during incidents

Use cases include rapid screening of drinking water supplies, prioritizing samples for detailed analysis, and producing timely data for emergency decision-making.

Related standards

EN ISO 22017 references and aligns with several ISO and national documents, including:

• ISO 10704, ISO 11704 (gross-alpha/gross-beta)
• ISO 20042, ISO 10703, ISO 19581 (gamma spectrometry)
• ISO 13160 (90Sr measurement)
• ISO 5667 series (sampling)
• ISO/IEC Guide 98-3 (uncertainty)
• WHO Codex and IAEA guidance for OILs

Keywords: EN ISO 22017:2020, ISO 22017:2020, rapid radioactivity measurements, water quality, nuclear emergency, radiological emergency, gross alpha, gross beta, gamma spectrometry, operational intervention levels, laboratory preparedness.