BS en 1289-1998 PDF
BS en 1289-1998 PDF
BS en 1289-1998 PDF
1289:1998
Incorporating
Amendments
Nos.1 and 2
Non-destructive testing
of welds Penetrant
testing of welds
Acceptance levels
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ICS 25.160.40
12&23<,1*:,7+287%6,3(50,66,21(;&(37$63(50,77('%<&23<5,*+7/$:
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BS EN 1289:1998
National foreword
This British Standard is the English language version of EN 1289:1998,
including amendments A1:2002 and A2:2003.
The start and finish of text introduced or altered by amendment is indicated in
the text by tags !". Tags indicating changes to CEN text carry the number
of the CEN amendment. For example text altered by CEN amendment A1 is
indicated by !".
The UK participation in its preparation was entrusted to Technical Committee
WEE/46, Non-destructive examination, which has the responsibility to:
Summary of pages
This document comprises a front cover, an inside front cover, the EN title page,
pages 2 to 5 and a back cover.
The BSI copyright notice displayed in this document indicates when the
document was last issued.
This British Standard, having
been prepared under the
direction of the Engineering
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under the authority of the
Standards Board and comes
Amendments issued since publication
into effect on 15 June 1998
Amd. No. Date Comments
BSI 11 March 2004
13984 30 October 2002 See national foreword
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EUROPEAN STANDARD EN 1289
February 1998
NORME EUROPENNE
+ A1
EUROPISCHE NORM May 2002
+ A2
December 2003
ICS 25.160.40
Descriptors: Welded joints, metals, quality control, non-destructive tests, liquid penetrant tests, surface condition, weld defects,
defects tolerances, acceptability, levels: quantity
English version
CEN
European Committee for Standardization
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1 Scope
This European Standard specifies acceptance levels for indications from surface breaking imperfections in
metallic welds detected by penetrant testing.
The acceptance levels are primarily intended for use during manufacture !testing", but where
appropriate they can be used for in service inspection.
The acceptance levels in this standard are based on detection capabilities that can be expected when using
techniques specified in EN 571-1 and parameters recommended in Annex A. The acceptance levels can be
related to welding standards, application standards, specifications or codes. Such a relationship is shown
in EN 12062 or EN 25817 and EN 30042.
2 Normative references
This European Standard incorporates by dated or undated reference provisions from other publications.
These normative references are cited at the appropriate places in the text and the publications are listed
hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply
to this European Standard only when incorporated in it by amendment of revision. For undated references
the latest edition of the publication referred to applies.
EN 571-1, Non-destructive testing Penetrant testing Part 1: General principles.
prEN 1330-1, Non-destructive testing Terminology Part 1: General terms.
prEN 1330-2, Non-destructive testing Terminology Part 2: Terms common to the non-destructive
testing methods.
prEN 1330-6, Non-destructive testing Terminology Part 6: Terms used in penetrant system.
prEN ISO 3452-2, Non-destructive testing Penetrant testing Part 2: Testing of penetrant materials.
(ISO/DIS 3452-2:1996)
EN 12062, Non-destructive !testing" of welds General rules for metallic materials.
EN 25817, Arc-welded joints in steel Guidance on quality levels for imperfections. (ISO 5817:1992)
EN 30042, Arc-welded joints in aluminium and its weldable alloys Guidance on quality levels for
imperfections. (ISO 10042:1992)
3 Definitions
For the purposes of this standard, in addition to those given in prEN 1330-1, prEN 1330-2 and
prEN 1330-6 the following definitions apply:
3.1
linear indication
indication having a length greater than three times its width
3.2
non-linear indication
indication having a length less than, or equal to three times its width
4 Testing parameters
4.1 General
Many parameters, either individually or in combination, will affect the shape and size of a penetrant
indication produced by a weld imperfection.
The following items are significant factors that will affect the shape and size of indications.
4.2 Sensitivity
Penetrant materials are classified in accordance with prEN ISO 3452-2, including a sensitivity level which
relates to the ability to detect small imperfections. Generally higher sensitivity materials should be used
for the detection of small imperfections.
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5 Acceptance levels
5.1 General
The width of the test surface shall include the weld metal and the adjacent parent metal up to a distance
of 10 mm on each side.
Indications produced by penetrant testing do not usually display the same size and shape characteristics
as the imperfection causing that indication. For the purposes of this standard, it is the size of the indication
which should be assessed against the values shown in Table 1.
Acceptance levels prescribed for linear indications are those corresponding to the evaluation level.
Indications lower than this shall not be taken into account. Normally, acceptable indications shall not be
recorded.
Local grinding may be used to improve the classification of all or part of a test surface when it is required
to work to a higher detection limit than that recommended by the existing weld surface condition
in Table A.1.
Acceptance levels for welds in metallic materials are given in Table 1.
5.2 Evaluation of indications
Initial evaluation shall be carried out as described in EN 571-1 and final evaluation of indication size shall
be carried out after a designated minimum development time has elapsed, and before the indication has
degenerated such that it no longer represents the causing imperfection.
5.3 Grouped indications
Any adjacent indications separated by less than the major dimension of the smaller shall be assessed as a
single, continuous indication.
Grouped indications shall be evaluated in accordance with an application standard.
5.4 Removal of imperfections
Where the product specification permits local grinding may be used to reduce or remove imperfections
which are the cause of unacceptable indications. All such !areas" shall be re-tested and evaluated with
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4
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EN 1289:1998
Annex A (informative)
Recommended testing parameters
The recommended parameters for reliable detection of small imperfections are given in Table A.1.
Table A.1 Recommended testing parameters
Acceptance level Surface condition Type of penetrant system
1 Fine surface 1) Fluorescent penetrant system, normal sensitivity or
higher to prEN ISO 3452-2
Colour contrast penetrant, high sensitivity
to prEN ISO 3452-2
2 Smooth surface2) Any
3 General surface3) Any
1)
Fine Surface The weld cap and parent material offering smooth clean surfaces with negligible undercut, rippling and
spatter. The surface finish is typical of welds made by automatic TIG-welding, submerged arc welding
(fully mechanized) and manual metal arc welding process using iron powder electrodes
2)
Smooth Surface The weld cap and parent material offering reasonably smooth surfaces with minimal undercut, rippling
and spatter. The surface finish is typical of welds made by manual metal arc welding vertical downwards
and MAG-welding using argon !rich" gas for the capping runs.
3)
General Surface The weld cap and parent material in the as welded condition. The surface finish is typical of welds
produced by the manual metal arc and MAG welding processes in any position
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