SIST-TS CEN/TS 15053:2005

SLOVENSKI STANDARD
SIST-TS CEN/TS 15053:2005
01-november-2005
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Non-destructive testing - Recommendations for discontinuities-types in test specimens
for examination
Zerstörungsfreie Prüfung - Empfehlungen für Arten von Inhomogenitäten in
Prüfungsstücken für Prüfungen
Essais non destructifs - Recommandations relatives aux types de discontinuités
présentes dans les échantillons d'essai utilisés pour les examens
Ta slovenski standard je istoveten z: CEN/TS 15053:2005
ICS:
19.100 Neporušitveno preskušanje Non-destructive testing
SIST-TS CEN/TS 15053:2005 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST-TS CEN/TS 15053:2005

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SIST-TS CEN/TS 15053:2005
TECHNICAL SPECIFICATION
CEN/TS 15053
SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
August 2005
ICS 19.100

English Version
Non-destructive testing - Recommendations for discontinuities-
types in test specimens for examination
Essais non destructifs - Recommandations relatives aux Zerstörungsfreie Prüfung - Empfehlungen für Arten von
types de discontinuités présentes dans les échantillons Inhomogenitäten in Prüfungsstücken für Prüfungen
d'essai utilisés pour les examens
This Technical Specification (CEN/TS) was approved by CEN on 7 May 2005 for provisional application.
The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to submit their
comments, particularly on the question whether the CEN/TS can be converted into a European Standard.
CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS available
promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS)
until the final decision about the possible conversion of the CEN/TS into an EN is reached.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 15053:2005: E
worldwide for CEN national Members.

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SIST-TS CEN/TS 15053:2005
CEN/TS 15053:2005 (E)
Contents
Page
Foreword .3
1 Scope .4
2 Normative references .4
3 Terms and definitions.4

4 Product sectors.4
5 Minimum size of discontinuity .6
6 Surface conditions.8
7 Number of discontinuities in each sample.8
8 Radiographic interpretation test (radiographs) .8
9 Master report .9
Annex A (informative) Discontinuities in castings.10
Annex B (informative) Discontinuities in welds .11
Annex C (informative) Discontinuities in wrought products.12
Annex D (informative) Discontinuities in forgings.13
Annex E (informative) Discontinuities in tubes and pipes .14
Annex F (informative) Discontinuities in in-service inspection .15

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SIST-TS CEN/TS 15053:2005
CEN/TS 15053:2005 (E)
Foreword
This Technical Specification (CEN/TS 15053:2005) has been prepared by Technical Committee CEN/TC 138
“Non-destructive testing”, the secretariat of which is held by AFNOR.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to announce this Technical Specification: Austria, Belgium, Cyprus, Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland
and United Kingdom.
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SIST-TS CEN/TS 15053:2005
CEN/TS 15053:2005 (E)
1 Scope
This Technical Specification is established to consider and define discontinuities-types to be exhibited in test
specimens for use in practical Non Destructive Testing examinations. According to EN 473:2000, Clause
7.1.3.3, the discontinuities contains in the test specimens may be natural, artificial or implanted.
Acoustic Emission Testing, Infrared Thermography Testing and Leak Testing need not define discontinuity-
type, due to their specific approach (e.g. replaced in AT by artificial sources).
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
EN 473:2000, Non-destructive testing – Qualification and certification of NDT personnel - General principles.
EN ISO 4063, Welding and allied processes - Nomenclature of processes and reference numbers (ISO
4063:1998).
EN ISO 6520-1, Welding and allied processes - Classification of geometric imperfections in metallic materials.
Part 1: Fusion welding (ISO 6520-1:1998)
3 Terms and definitions
For the purposes of this Technical Specification, the terms and definitions given in EN 473:2000 and the
following apply.
3.1
Test area
area of a test specimen, either the whole or just a part, which is to be tested by a candidate during the
practical examination. A single test specimen can contain a number of test areas with no overlap
3.2
Minimum number of test pieces
maximum number of candidates allowed to perform simultaneously a practical examination, in an examination
centre approved by a certifying body, shall be a figure less than the total number of test specimens that the
examination centre has to hold at one’s disposal, for this examination
4 Product sectors
4.1 Castings (c)
4.1.1 Configuration
The range of test specimens held by the examination centre may include the following characteristics:
 Cylindrical section (large and small diameters);
 Flanges;
 Changes of sections;
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 Nozzles or junctions (T, L, Y and X).
The use of castings which contain both weld repairs and natural volumetric flaws are permitted.
4.1.2 Discontinuities-types
The discontinuities-types are defined in the matrix in Annex A.
4.2 Welded test specimens (w)
4.2.1 Configuration
The range of test specimens held by the examination centre may include the following characteristics:
 Plate butt welds;
 Pipes and tubes;
 Joints;
 Nozzle welds;
 Weld build-ups.
4.2.2 Discontinuities-types
The discontinuities-types are defined in the matrix in Annex B.
4.3 Wrought test specimen (wp)
4.3.1 Configuration
The range of test specimens held by the examination centre may include the following characteristics:
 Plates and strips;
 Tubes and pipes;
 Long products (bars, etc…).
4.3.2 Discontinuities-types
The discontinuities-types are defined in the matrix in Annex C.
4.4 Forgings (f)
4.4.1 Configuration
The range of test specimens held by the examination centre may include the following characteristics:
 Cylindrical section (large and small diameters);
 Flanges;
 Open die/hand forgings with simple geometry;
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 Die/drop forgings with simple and complex geometry

4.4.2 Discontinuities-types
The discontinuities-types are defined in the matrix in Annex D.
4.5 Tubes and pipes (t)
4.5.1 Configuration
The range of test specimens (seamless and welded) held by the examination centre may include the following
characteristics:
 hollow sections (large and small diameters);
 nozzles or junctions (T, L, Y and X);
 elbows;
 reductions;
 flanges.
4.5.2 Discontinuities-types
The discontinuities-types are defined in the matrix in Annex E.
4.6 In Service Inspection
4.6.1 Configuration
The minimum number of test specimens shall include the product sectors according to Table B.1 of EN
473:2000.
4.6.2 Discontinuities-types
The discontinuities-types are defined in the matrix in Annex F.
5 Minimum size of discontinuity
5.1 General
NOTE Samples may contain smaller discontinuities as those indicated below, but they are not to be taken into
consideration for examinations.
If available, threshold values are given in NDT product standard. In case there are no available standard or no
value given, the following values shall be used.
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5.2 Radiographic testing (RT)
5.2.1 For specimen examination
The test specimen need not contain any discontinuity.
5.2.2 For interpretation of radiographs indication size in the radiograph
 Planar indication:
 Minimum le
...