ASTM C1592/C1592M-21 PDF
Standard Guide for Making Quality Nondestructive Assay Measurements
Standard Guide for Making Quality Nondestructive Assay Measurements
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 12
- Дата публикации:
- 1 июня 2021 г.
- Издание:
- C1592/C1592M
- ICS:
- 27.120.30
SIGNIFICANCE AND USE 4.1 NDA measurement practices aimed at achieving quality results are described in this guide. The application of the material provided in this guide should be determined on a case by case basis. Not all elements are required for all applications. 4.2 Nondestructive assay measurements are typically performed when the items measured or goals of the measurement program favor or require NDA over destructive analysis. NDA is typically favored when collecting a representative sample of the item is difficult or impractical (for example, scrap and waste items), personnel exposure would be significant, spread of contamination from sampling would occur, generation of secondary waste must be minimized, the weight and/or tare weight of the item cannot easily be determined (for example, in place process equipment), rapid turn-around of the measurement results is needed, or the NDA measurement is significantly less expensive than the equivalent destructive analysis. 4.3 The principles provided in this guide should be used to determine which type of measurement is best suited to the measurement application. This determination involves consideration of the characteristics of the items to be measured, as well as the goals of the measurement program. 4.4 This guide applies to the suite of NDA instruments and measurement methods, many of which are described in detail in Refs (1) and (2) .7 A partial listing of measurement methods and applicable use references is provided in 5.5.1. It is incumbent upon the user to seek additional guidance within ASTM method-specific standards, as this guide does not take precedence. Additional information on specific methods is best found in technical meeting transactions, journals, commercial application notes, and NRC/DOE publications. 4.5 This guide may be applied to many situations spanning the range of nuclear materials from product through waste. Typical applications include: the measurement and characterization of transuranic wastes,... SCOPE 1.1 This guide is a compendium of Quality Measurement Practices for performing measurements of radioactive material using nondestructive assay (NDA) instruments. The primary purpose of the guide is to assist users in arriving at quality NDA results, that is, results that satisfy the end user’s needs. This is accomplished by providing an acceptable and uniform basis for the collection, analysis, comparison, and application of data. The recommendations are guidelines to achieving quality NDA measurements in most areas. 1.2 This guide applies to the use of NDA instrumentation for the measurement of nuclear materials by the observation of spontaneous or stimulated nuclear or atomic radiations, including photons, neutrons, or heat. Recommended calibration, operating, and assurance methods represent guiding principles based on current NDA technology. The diversity of industry-wide nuclear materials measurement applications and instrumentation precludes discussion of specific measurement situations. As a result, compliance with practices recommended in this guide must be based on a thorough understanding of contributing variables and performance requirements of the specific measurement application. 1.3 Selection of the best instrument for a given measurement application and advice on the use of this instrument must be provided by a qualified NDA professional following guidance provided in Guide C1490. This guide is to be used as a reference, and to supplement the critical thinking, professional skill, expert judgment, and experimental test and verification needed to ensure that the instrumentation and methods have been properly implemented. 1.4 The intended audience for this guide includes but is not limited to Management, Auditor Support, NDA Qualified Instrument Operators, NDA Technical Specialists, and NDA Professionals. 1.5 The values stated in either SI units or inch-pound units are to be regarded separately as...
Abstract
Overview
ASTM C1592/C1592M-21, titled "Standard Guide for Making Quality Nondestructive Assay Measurements," is an international standard developed by ASTM for ensuring quality in nondestructive assay (NDA) measurements of radioactive materials. NDA techniques provide a means of measuring nuclear material by detecting their emitted radiation-such as photons, neutrons, or heat-without altering or destroying the item being analyzed. This guide helps organizations establish reliable practices, select appropriate instruments, and achieve measurement results that meet quality objectives, all while minimizing sample handling and exposure risks.
Key Topics
-
Scope and Purpose
- Focuses on general principles for achieving high-quality NDA results
- Intended to guide users in collecting, analyzing, comparing, and applying NDA measurement data
- Relevant to measurements performed when destructive analysis is impractical, risky, or more expensive
-
Audience
- Designed for management, auditor support, instrument operators, technical specialists, and NDA professionals
-
Measurement Methods
- Covers a range of NDA instruments and techniques, including gamma spectrometry, neutron counting, calorimetry, and tomographic scanning
- Emphasizes the importance of choosing methods matched to the material, item characteristics, and measurement goals
-
Calibration and Validation
- Stresses the need for rigorous calibration and validation tailored to each application
- Notes that calibration activities must be documented and periodically verified to maintain measurement accuracy
-
Quality Assurance
- Recommends establishing quality control programs and adherence to relevant method-specific standards
- Points to detailed guidance found in other ASTM standards and industry publications
Applications
Nondestructive assay methods described in ASTM C1592/C1592M-21 are vital for a variety of nuclear industry operations, particularly where safety, representativeness, contamination, or turnaround time are concerns. Common applications include:
-
Radioactive Waste Characterization
- Measuring and characterizing transuranic, low-level, and mixed radioactive wastes
- Determining compliance with regulatory thresholds
-
Facility and Process Monitoring
- Confirming inventories of nuclear materials in storage or process equipment
- Supporting criticality safety evaluations and safeguards programs
-
Operational Support
- Assessing holdup of special nuclear material during decontamination or decommissioning of nuclear facilities
- In-situ analyses of glove boxes, hot cells, and facility environments before and after demolition
-
Program Optimization
- Ensuring rapid turnaround of measurement results for operational efficiency
- Reducing personnel exposure and minimizing secondary waste generation
Related Standards
For comprehensive quality assurance, calibration, and method selection in NDA measurements, ASTM C1592/C1592M-21 should be used together with related standards, including:
- ASTM C1490 - Guide for the Selection, Training, and Qualification of NDA Personnel
- ASTM C1133/C1133M - Test Method for Nondestructive Assay of Special Nuclear Material in Low-Density Scrap and Waste by Segmented Passive Gamma-Ray Scanning
- ASTM C1207 - Test Method for Nondestructive Assay of Plutonium in Scrap and Waste by Passive Neutron Coincidence Counting
- ASTM C1514 - Test Method for Measurement of Uranium Fraction Using Enrichment Meter Principle
- ANSI N15.36 - NDA Measurement Control and Assurance
- ANSI N15.5 - Statistical Terminology and Notation for Nuclear Materials Management
Other referenced guides cover calibration, system quality control, data analysis procedures, and training best practices. Referencing these documents ensures a robust approach to NDA measurement programs, supporting both compliance and operational excellence.
Keywords: nondestructive assay, NDA measurements, ASTM C1592/C1592M, radioactive material measurement, nuclear material assay, quality assurance, calibration, nuclear industry standards
Технические детали
- Технический комитет
- C26 - Nuclear Fuel Cycle
- SKU
- ASTM C1592/C1592M-21
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