SIST EN ISO 14096-2:2026

• Abstract:

  This document specifies three film-digitisation quality classes for the requirements of non-destructive testing. The user specifies one of these quality classes for the respective film digitisation task. The digitisation parameters depend on the radiation energy, the material thickness penetrated and the quality level of the original radiographic film. This document does not address signal processing, display and storage of the digitised data.; For the application of this document, ISO 14096-1 provides definitions and measurement procedures.

• Status: Not Published
• Public Enquiry End Date: 20-Nov-2025
• ICS: 19.100 - Non-destructive testing
• ICS: 37.040.25 - Radiographic films
• Technical Committee: PKG - Testing of metallic materials
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 18-Sep-2026
• Due Date: 23-Nov-2026
• Ref Project: EN ISO 14096-2:2026 - Non-destructive testing - Qualification of radiographic film digitisation systems - Part 2: Minimum requirements (ISO 14096-2:2026)

• Referred By: SIST EN 14096-1:2004 - Non-destructive testing - Qualification of radiographic film digitisation systems - Part 1: Definitions, quantitative measurements of image quality parameters, standard reference film and qualitative control
• Effective Date: 17-Sep-2026
• Referred By: SIST EN ISO 14096-1:2020 - Non-destructive testing - Qualification of radiographic film digitisation systems - Part 1: Definitions, quantitative measurements of image quality parameters, standard reference film and qualitative control (ISO 14096-1:2005)
• Effective Date: 17-Sep-2026
• Revises: SIST EN ISO 14096-2:2020 - Non-destructive testing - Qualification of radiographic film digitisation systems - Part 2: Minimum requirements (ISO 14096-2:2005)
• Effective Date: 19-Jul-2023

SIST EN ISO 14096-2:2026 is the Slovenian adoption of ISO 14096-2, published by SIST. It specifies minimum requirements for three quality classes for radiographic film digitisation systems used in non-destructive testing, so users can choose a class for a given digitisation task based on the film, radiation energy and material thickness. The standard focuses on digitisation itself; signal processing, display and storage of the digitised data are outside its scope.

What does SIST EN ISO 14096-2:2026 specify?

SIST EN ISO 14096-2:2026 specifies how radiographic film digitisation systems are classified and what minimum performance they shall meet for non-destructive testing. ISO 14096-1 provides the definitions and measurement procedures used with this document.

The standard is organized into:

• Clause 1 - Scope
• Clause 2 - Normative references
• Clause 3 - Terms and definitions
• Clause 4 - Digitisation quality classes
• Clause 5 - Minimum requirements for digitisation quality classes
  • 5.1 Density range and working ranges
  • 5.2 Minimum basic spatial resolution
  • 5.3 Class selection based on radiographic testing class

In practice, this means the user does not pick a scanner only by name or price. The user selects a digitisation quality class that fits the film and the inspection task, then checks that the system meets the matching density and resolution limits.

What are the key requirements of SIST EN ISO 14096-2:2026?

SIST EN ISO 14096-2:2026 sets three classes - DS, DB and DA - and links them to the intended use of the digitised film. DS is the highest class for archiving, while DB and DA allow some loss of image quality and are aimed at digital analysis where the original radiographic film is also kept.

Quality classes and identification

Clause 4 says each system for non-destructive testing shall be identified with all its working ranges of optical density. It shall also be classified by the quality class and by the basic spatial resolution value, rounded to 1 μm, that the system can achieve.

This matters because a scanner may work well on one film density range but not another. Buyers and users therefore need to check both the class and the usable density ranges, not just the scanner model.

Density range and digital resolution

Clause 5.1 sets minimum density ranges and a minimum density contrast sensitivity, ΔDCS, within those ranges. It also requires a minimum digital resolution, and if the digital value is based on light intensity rather than optical density, the digital resolution shall be increased by at least 2 bits.

This is important when comparing scanners: a system that cannot read the darker or lighter parts of a film may miss evaluation data. The bit-depth requirement also affects whether subtle film differences are preserved after digitisation.

Spatial resolution limits

Clause 5.2 sets minimum basic spatial resolution limits according to X-ray voltage or isotope. Smaller SR values are allowed.

The practical point is that film grain, radiation energy and scanner optics all affect how fine detail is preserved. For low-voltage radiography, the standard also notes that scanner resolution may need to be matched to the film or the original film should be archived.

Class selection for radiographic testing

Clause 5.3 ties digitisation class selection to the radiographic testing classes used in ISO 5579, ISO 17636-1 and EN 12681-1. It also links the chosen digitisation class to steel wall thickness and the testing class A or B.

That helps users decide what class of digitisation is acceptable for a given inspection record. The note in Clause 5.3 also says that for crack detection and fine imperfections, DB or better should be used.

Image quality after digitisation

After digitisation, all required image quality indicators shall remain visible in the digital image as they were on the original radiographic film. This is the practical check that the digitised record still supports evaluation.

What terms does SIST EN ISO 14096-2:2026 define?

SIST EN ISO 14096-2:2026 defines the key measurement terms used to judge scanner performance.

• Radiographic film digitisation system / digitiser - a system that detects film transmission and converts it into numerical data.
• Pixel size (P) - the centre-to-centre distance between adjacent pixels, which limits basic spatial resolution.
• Optical density - the logarithmic measure of light transmission through the film.
• Basic spatial resolution of the digitisation system (SR) - half of the measured unsharpness of the digitiser in the digital image.
• Digital resolution (N) - the number of bits from the analogue-to-digital converter used for densitometric digitisation.
• Density contrast sensitivity (ΔDCS) - the smallest film density variation the digitiser can resolve.
• Density range (R) - the range of optical densities measurable with the digitiser.
• Working range (WR) - a density range where the digitiser guarantees the required contrast sensitivity in one acquisition.

Who uses SIST EN ISO 14096-2:2026?

SIST EN ISO 14096-2:2026 is used by non-destructive testing laboratories, radiographic inspection teams, quality managers and buyers of digitisation equipment. It is relevant in industrial radiography for welds, metallic materials and castings, especially where film records from X- and gamma-ray testing are digitised for analysis or archiving.

What changed in SIST EN ISO 14096-2:2026 from the previous edition?

SIST EN ISO 14096-2:2026 cancels and replaces the first edition, ISO 14096-2:2005, as a technically revised second edition. The stated changes are updated definitions of terms 3.4 and 3.5, removal of the definitions of “spatial frequency” and “modulation transfer function,” addition of the definition of “basic spatial resolution,” updated values in Tables 1, 2 and 3, and editorial revisions.

Which standards are used with SIST EN ISO 14096-2:2026?

SIST EN ISO 14096-2:2026 refers to:

• ISO 17636-1 - radiographic testing of welds with film, which supplies one of the testing class systems used in Clause 5.3.
• EN 12681-1 - radiographic examination of castings with film techniques, also used for class selection in Clause 5.3.
• ISO 14096-1 - the companion part for definitions, quantitative measurements of image quality parameters, the standard reference film and qualitative control.
• ISO 19232-5 - the method for determining image unsharpness and basic spatial resolution using duplex wire IQIs.
• ISO 5579 - basic rules for radiographic testing of metallic materials using film and X- or gamma rays.

What does the SIST EN ISO 14096-2:2026 document contain?

SIST EN ISO 14096-2:2026 contains the class system, minimum density and resolution limits, and the mapping between radiographic testing classes and digitisation classes. It also points to the measurement methods used to verify SR, including spatial resolution targets and duplex wire IQIs.

The document includes tables that define the density range, bit depth and contrast sensitivity limits, plus the spatial resolution limits by radiation energy. It also includes the class-selection table for testing classes A and B and a note on using DB or better for crack detection and fine imperfections.

SLOVENSKI STANDARD
oSIST prEN ISO 14096-2:2025
01-november-2025
Neporušitvene preiskave - Kvalificiranje sistemov za digitaliziranje radiogramov -
2. del: Minimalne zahteve (ISO/DIS 14096-2:2025)
Non-destructive testing - Qualification of radiographic film digitisation systems - Part 2:
Minimum requirements (ISO/DIS 14096-2:2025)
Zerstörungsfreie Prüfung - Qualifizierung von Röntgenfilm-Digitalisierungssystemen -
Teil 2: Mindestanforderungen (ISO/DIS 14096-2:2025)
Essais non destructifs - Qualification des systèmes de numérisation des films
radiographiques - Partie 2: Exigences minimales (ISO/DIS 14096-2:2025)
Ta slovenski standard je istoveten z: prEN ISO 14096-2
ICS:
19.100 Neporušitveno preskušanje Non-destructive testing
37.040.25 Radiografski filmi Radiographic films
oSIST prEN ISO 14096-2:2025 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN ISO 14096-2:2025
oSIST prEN ISO 14096-2:2025
DRAFT
International
Standard
ISO/DIS 14096-2
ISO/TC 135/SC 5
Non-destructive testing —
Secretariat: DIN
Qualification of radiographic film
Voting begins on:
digitisation systems —
2025-08-29
Part 2:
Voting terminates on:
2025-11-21
Minimum requirements
Essais non destructifs — Qualification des systèmes de
numérisation des films radiographiques —
Partie 2: Exigences minimales
ICS: 37.040.25
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document has not been edited by the ISO Central Secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS.
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Reference number
ISO/DIS 14096-2:2025(en)
oSIST prEN ISO 14096-2:2025
DRAFT
ISO/DIS 14096-2:2025(en)
International
Standard
ISO/DIS 14096-2
ISO/TC 135/SC 5
Non-destructive testing —
Secretariat: DIN
Qualification of radiographic film
Voting begins on:
digitisation systems —
Part 2:
Voting terminates on:
Minimum requirements
Essais non destructifs — Qualification des systèmes de
numérisation des films radiographiques —
Partie 2: Exigences minimales
ICS: 37.040.25
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document has not been edited by the ISO Central Secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2025
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
BE CONSIDERED IN THE LIGHT OF THEIR
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
or ISO’s member body in the country of the requester.
NATIONAL REGULATIONS.
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RECIPIENTS OF THIS DRAFT ARE INVITED
CP 401 • Ch. de Blandonnet 8
TO SUBMIT, WITH THEIR COMMENTS,
CH-1214 Vernier, Geneva
NOTIFICATION OF ANY RELEVANT PATENT
Phone: [phone]
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Email: [e-mail]
Website: www.iso.org
Published in Switzerland Reference number
ISO/DIS 14096-2:2025(en)
ii
oSIST prEN ISO 14096-2:2025
ISO/DIS 14096-2:2025(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Digitisation quality classes . . 3
5 Minimum requirements for digitisation quality classes . 3
5.1 Density range and working ranges of the radiographic film digitisation system .3
5.2 Minimum basic spatial resolution of radiographic film digitisation systems .4
5.3 Digitisation quality class depending on the radiographic testing class .4

iii
oSIST prEN ISO 14096-2:2025
ISO/DIS 14096-2:2025(en)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
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in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
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rights in respect thereof. As of the date of publication of this document, ISO had not received notice of
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Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 135, Non-destructive testing, Subcommittee
SC 5, Radiation methods.
This second edition cancels and replaces the first edition (ISO 14096-2:2005), which has been technically
revised.
The main changes are as follows:
— definitions of terms 3.4 and 3.5 updated;
— definitions of terms “spatial frequency” and “modulation transfer function” removed;
— in clause 3.4, definition of term “basic spatial resolution” added;
— values in Table 1, Table 2 and Table 3 updated;
— editorial updated.
A list of all parts in the ISO 14096 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.

iv
oSIST prEN ISO 14096-2:2025
ISO/DIS 14096-2:2025(en)
Introduction
Radiographic film systems are used for industrial inspection by X- and gamma rays. To apply modern means
of computer support for analysis, transmission and storage the information stored in the radiographic film
should be converted into digital data (digitisation). This document defines minimum requirements to ensure
that the relevant information for evaluation of the digital data is preserved during the film digitisation
process.
v
oSIST prEN ISO 14096-2:2025
oSIST prEN ISO 14096-2:2025
DRAFT International Standard ISO/DIS 14096-2:2025(en)
Non-destructive testing — Qualification of radiographic fi
...