ISO 16966:2013 PDF

Name: ISO 16966:2013 — Nuclear energy — Nuclear fuel technology — Theoretical activation calculation method to evaluate the radioactivity of activated waste generated at nuclear reactors
SKU: ISO 16966:2013
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Nuclear energy — Nuclear fuel technology — Theoretical activation calculation method to evaluate the radioactivity of activated waste generated at nuclear reactors

Название (английский):

ISO 16966:2013

Nuclear energy — Nuclear fuel technology — Theoretical activation calculation method to evaluate the radioactivity of activated waste generated at nuclear reactors

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 45
Дата публикации:: 2 декабря 2013 г.
Издание:: ISO IS 16966 edition 1 version 1
ICS:: 27.120.30

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Описание (английский):

ISO 16966:2013 gives guidelines for a common basic theoretical methodology to evaluate the activity of radionuclides in activated waste generated at nuclear reactors using neutron activation calculations.

Abstract

Похожие стандарты

Упомянутые в описании и другие стандарты ISO

Overview

ISO 16966:2013 - "Nuclear energy - Nuclear fuel technology - Theoretical activation calculation method to evaluate the radioactivity of activated waste generated at nuclear reactors" - provides standardized guidelines for performing neutron activation calculations to estimate radionuclide activities in activated reactor components. The standard defines a common theoretical methodology to plan, execute and report activation calculations for activated waste (e.g., in‑core hardware, reactor internals), excluding activity from deposited surface contamination.

Key topics and technical requirements

Methodologies: Two complementary approaches are defined:

Point method - item‑by‑item, best‑estimate calculations using specific neutron flux, material composition and operating history for representative pieces.
Range method - extends the point method to families of similar components by evaluating distributions across ranges of input parameters.

Range method variants: Conversion method, Correlation method, and Distribution evaluation method for population‑level estimates and scaling.

Input parameters: Explicit guidance to select and document:

Elemental composition (parent elements producing target radionuclides)
Neutron fluence rates (spatial/positional variations)
Irradiation history (exposure, integrated fluence, decay time)

Radionuclide concepts: Definitions and handling of target radionuclides, key nuclides (measurable gamma emitters used for scaling), and difficult‑to‑measure (DTM) nuclides.

Calculation process: Steps from context definition and method selection to calculation execution, processing (conversion/correlation factors) and reporting.

Quality controls: Recommendations for validation, uncertainty analysis, record keeping and result reporting (see informative annexes for examples and procedures).

Applications and who uses it

ISO 16966:2013 is intended for practitioners involved in nuclear waste characterization and radiological assessments:

Nuclear engineers and reactor physicists performing activation and neutron transport calculations

Waste management and decommissioning teams determining radionuclide inventories for disposal or transport

Radiological protection specialists and dose assessors estimating activity concentrations and scaling factors

Regulatory bodies and licensing organizations reviewing activation‑based declarations and safety cases

Practical uses include estimating activities for disposal acceptance, generating scaling relationships for difficult‑to‑measure nuclides, planning sampling and non‑destructive assay strategies, and producing defensible inventory reports.

Related standards

ISO 21238 (referenced for definitions and scaling concepts)

Guidance produced by ISO/TC 85 (Nuclear energy, nuclear technologies and radiological protection)

ISO 16966:2013 supports consistent, transparent and auditable neutron activation calculations to improve activated waste characterization, regulatory compliance and safe management of radioactive materials.

ISO 16966:2013 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications and who uses it

Related standards

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