cen ts 15053-non-destructive testing. recommendations for discontinuities-types in test specime

DRAFT FOR DEVELOPMENT DD CEN/TS 15053:2005

Non-destructive testing — Recommendations for discontinuities-types in test specimens for examination

ICS 19.100

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DD CEN/TS 15053:2005

This Draft for Development was published under the authority of the Standards Policy and Strategy Committee on 13 December 2005

© BSI 13 December 2005

ISBN 0 580 47080 6

National foreword

This Draft for Development is the official English language version of CEN/TS 15053:2005.

This publication is not to be regarded as a British Standard.

It is being issued in the Draft for Development series of publications and is of a provisional nature because details for these types of test specimens have not previously been covered by formal standardization. It should be applied on this provisional basis, so that information and experience of its practical application may be obtained.

Comments arising from the use of this Draft for Development are requested so that UK experience can be reported to the European organization responsible for its conversion to a European standard. A review of this publication will be initiated 2 years after its publication by the European organization so that a decision can be taken on its status at the end of its 3-year life. Notification of the start of the review period will be made in an announcement in the appropriate issue of Update Standards.

According to the replies received by the end of the review period, the responsible BSI Committee will decide whether to support the conversion into a European Standard, to extend the life of the Technical Specification or to withdraw it. Comments should be sent in writing to the Secretary of BSI Technical Committee WEE/46, Non-destructive testing, at British Standards House, 389 Chiswick High Road, London W4 4AL, giving the document reference and clause number and proposing, where possible, an appropriate revision of the text.

A list of organizations represented on this committee can be obtained on request to its secretary.

Cross-references

The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.

This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.

Summary of pages

This document comprises a front cover, an inside front cover, the CEN/TS title page, pages 2 to 15 and a back cover.

The BSI copyright notice displayed in this document indicates when the document was last issued.

Amendments issued since publication

Amd. No. Date Comments

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TECHNICAL SPECIFICATION

SPÉCIFICATION TECHNIQUE

TECHNISCHE SPEZIFIKATION

CEN/TS 15053

August 2005

ICS 19.100

English Version

Non-destructive testing - Recommendations for discontinuities-types in test specimens for examination

Essais non destructifs - Recommandations relatives auxtypes de discontinuités présentes dans les échantillons

d'essai utilisés pour les examens

Zerstörungsfreie Prüfung - Empfehlungen für Arten vonInhomogenitäten in Prüfungsstücken für Prüfungen

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 theircomments, 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 availablepromptly 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 STANDARDIZATIONC OM ITÉ EUR OP ÉEN DE NOR M ALIS AT IONEUROPÄISCHES 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 reservedworldwide for CEN national Members.

Ref. No. CEN/TS 15053:2005: E

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CEN/TS 15053:2005

2

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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CEN/TS 15053:2005

3

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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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


Plate butt welds;

Pipes and tubes;

Joints;

Nozzle welds;

Weld build-ups.


The discontinuities-types are defined in the matrix in Annex B.

4.3 Wrought test specimen (wp)

4.3.1 Configuration


Plates and strips;

Tubes and pipes;

Long products (bars, etc…).


The discontinuities-types are defined in the matrix in Annex C.

4.4 Forgings (f)

4.4.1 Configuration


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


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.


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.


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 length: 5 mm.

Volumetric indication:

Pores: 2 mm;

Cluster: 5 mm;

Inclusion: 3 mm.

5.3 Ultrasonic testing (UT)

Planar discontinuity:

Minimum length: 5 mm;

Through wall extend: 2 mm.

Volumetric discontinuity:

Minimum size: side drill hole of 2 mm.

5.4 Magnetic particle and penetrant testing (MT-PT)

Linear indication:


Rounded indication:

Isolated: 5 mm;

Cluster: 5 mm.

5.5 Eddy current testing (ET)

Linear discontinuity:


Where no product standard defines the minimum size of indication, any configuration of discontinuity for which the local signal-to-noise ratio for at least one signal component between two to three, is recommended.

5.6 Visual testing (VT)

Direct aided VT:

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Minimum length of surface discontinuity: 1 mm.

Remote VT:

Depends on the goal of the test.

6 Surface conditions

The specimen shall have a surface finished free from loose products of corrosion and/or protective finishes in such a way that it shall provide sufficient access for NDT methods to be used.

7 Number of discontinuities in each sample

Specimen shall contain, as a minimum, one planar and/or volumetric discontinuity having location and dimensions suitable for the applicable NDT method.

8 Radiographic interpretation test (radiographs)

8.1 Definition

Radiographic interpretation test is constituted by radiographs (original or copy), exhibiting a sufficient range of artefacts material/structural anomalies and densities, to provide a realistic and unambiguous test of the ability of a radiographic interpreter to read, interpret and accurately report the results of radiographs.

8.2 Conditions

Radiographs shall be in good condition for viewing (verified and attested before the beginning of each exam session, by one jury Level 3 RT who belongs to the board of examiners), and shall contain, as a minimum, one indication and should contain not more than five different types of indications.

The use of radiograph copies or digitally reproduced is not precluded if the quality of the copy is achieved in respect of density, contrast, definition and sensitivity. They have to meet the minimum requirements of the specification applied for the original radiographs.

Radiographs may be of any size providing a suitable film viewer.

Examination centres shall hold representative radiographs of the product sectors they are approved for.

For In Service Inspection industrial sector, the range of radiographs shall include those relevant of the two following product sectors: weldings (w) and castings (c).

8.3 Quality

Radiographs shall be produced in accordance with the appropriate standard and also with respect to exposure parameters, resulting optical density and processing.

Image Quality Indicators of an internationally recognized type, shall be visible on each test specimen radiograph.

To unambiguously determine indication location by a candidate, radiographs shall contain a sufficient number of marker points, at least not less than two.

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9 Master report

All the discontinuities in the test specimens, which could be relevant for the evaluation, shall be reported on a master report, which shall contain as a minimum the following:

a) name and logo of certification body;

b) test specimen identification number;

c) product;

d) material;

e) NDT method;

f) reference standard used;

g) acceptable/ unacceptable criteria level to be used, if applicable;

h) equipment and means;

i) setting up used to perform the test and tolerance, if applicable;

j) indication:

type;

position in relation to a given reference point and tolerance, if applicable;

dimensions;

orientation.

k) final acceptable / unacceptable evaluation of indication1);

l) report of salient features relevant to marking scheme;

m) any other relevant features.

Note The use of sketches to enhance information is not precluded. Sketches may be scaled.

1) Depending on the acceptance level of indication and candidate’s qualification

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Ann

ex A

(in

form

ativ

e)

D

isco

ntin

uitie

s in

cas

tings

Tabl

e A

.1 —

Dis

cont

inui

ties

in c

astin

gs

Prod

uct

form

Plan

ar d

isco

ntin

uitie

s Vo

lum

etric

dis

cont

inui

ties

Cas

tings

(c

) M

anuf

actu

ringp

roce

ss

Met

hods

S

urfa

ce

Met

hods

S

ub-s

urfa

ce

Met

hods

S

urfa

ce

Met

hods

S

ub-s

urfa

ce

Ferr

ous

mat

eria

ls

San

d ca

stin

g

Inve

stm

ent

cast

ings

MT,

P

T,

ET,

V

T,

UT,

RT

Cra

cks,

Hot

tear

s,

Inse

rts,

Col

d S

huts

Shr

inka

ge

UT,

RT

Cra

cks,

Inse

rts,

Col

d S

huts

,

Shr

inka

ge

PT,

M

T,

UT,

RT,

VT

Por

ositi

es

Sin

k,

Col

laps

ed c

ore,

Gas

cav

ities

,

Incl

usio

ns

UT,

RT

Incl

usio

ns,

Inse

rts,

Col

laps

ed c

ore,

Gas

cav

ities

,

Shrin

kage

Non

ferr

ous

& a

uste

nitic

m

ater

ials

San

d ca

stin

g

Inve

stm

ent

cast

ing

Die

cas

ting

Pres

sure

di

e ca

stin

g

PT,

E

T,

VT,

U

T,

RT

Cra

cks,

Hot

tear

s,

Inse

rts,

Col

d S

huts

,

Shr

inka

ge

UT,

RT

C

rack

s,

Inse

rts,

Col

d S

huts

,

Shr

inka

ge

PT,

UT,

RT,

V

T P

oros

ities

Sin

k,

Col

laps

ed c

ore,

Gas

cav

ities

,

Incl

usio

ns

UT,

RT

Incl

usio

ns,

Inse

rts,

Col

laps

ed c

ore,

Gas

cav

ities

,

Shrin

kage

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Ann

ex B

(in

form

ativ

e)

D

isco

ntin

uitie

s in

wel

ds

Tabl

e B

.1 —

dis

cont

inui

ties

in w

elds

Prod

uct

form

Plan

ar d

isco

ntin

uitie

s Vo

lum

etric

dis

cont

inui

ties

wel

ding

a

(w)

Wel

ding

P

roce

ssc

Met

hods

S

urfa

ce

Met

hods

S

ub-s

urfa

ce

Met

hods

S

urfa

ce

Met

hods

S

ub-s

urfa

ce

Pla

te

in li

ne b

utt

Tee

buttb

Cru

cifo

rm

Tube

s an

d pi

pes

circ

umfe

ren-

tial b

utt

linea

r but

t

nozz

le1

node

MIG

,(131

)d

MA

G (1

35)d

,

TIG

(141

)d,

MM

A (1

11)d

,

SA

W (1

21)d

MT,

PT,

E

T, V

T,

RT,

UT,

Cra

cks

(100

) e

Lack

of f

usio

n (4

01) e

Inco

mpl

ete

pene

tratio

n (4

02) e

UT,

R

T,

ET

Cra

cks

(100

) e

Lack

of

fusi

on

(401

) e

Inco

mpl

ete

pene

tratio

n (4

02)e

RT,

UT,

MT,

PT,

VT

Por

osity

(200

) e

Impe

rfect

sh

ape

incl

udin

g un

derc

ut

(500

) e

RT,

UT,

P

oros

ity (2

00)e

Incl

usio

ns

(300

)e

a Va

luab

le fo

r all

mat

eria

ls e

xcep

t whe

re m

agne

tic m

etho

d is

impo

ssib

le to

app

ly

b fu

ll an

d pa

rtial

pen

etra

tion

c O

ther

pro

cess

es m

ay b

e in

clud

ed

d Se

e EN

ISO

406

3

e Se

e EN

ISO

652

0-1

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Ann

ex C

(in

form

ativ

e)

D

isco

ntin

uitie

s in

wro

ught

pro

duct

s

Tabl

e C

.1 —

Dis

cont

inui

ties

in w

roug

ht p

rodu

cts

Prod

uct

form

Plan

ar d

isco

ntin

uitie

s Vo

lum

etric

dis

cont

inui

ties

Wro

ught

pr

oduc

ts

(wp)

Man

ufac

turin

g pr

oces

s M

etho

ds

Sur

face

M

etho

ds

Sub

-sur

face

M

etho

ds

Sur

face

M

etho

ds

Sub

-sur

face

ferr

itic

stee

ls

Hot

rollin

g C

old

rollin

g E

xtru

ding

D

raw

ing

MT,

P

T,

ET,

V

T,

UT

Cra

cks,

P

ittin

g,

Inde

ntat

ions

an

d gr

oove

s,

Scr

atch

es,

Lam

inat

ion

(flat

pr

oduc

ts),

Pip

ing

(bar

s),

Sea

ms,

St

ringe

rs

UT,

ET,

C

rack

s,

Lam

inat

ion,

P

ipin

g,

Incl

usio

ns

(Stri

nger

s)

UT,

VT

Rol

led-

in s

cale

, In

clus

ions

a U

T In

clus

ions

Pip

ing

(bar

s),

non

ferr

itic

mat

eria

ls

Hot

rollin

g C

old

rollin

g E

xtru

ding

D

raw

ing

PT,

E

T,

VT,

UT

C

rack

s,

Pitt

ing,

In

dent

atio

ns

and

groo

ves,

S

crat

ches

, La

min

atio

n (fl

at

prod

ucts

), P

ipin

g (b

ars)

, S

eam

s,

Strin

gers

UT,

ET,

C

rack

s,

Lam

inat

ion,

P

ipin

g,

Incl

usio

ns

(Stri

nger

s)

UT,

VT

Rol

led-

in s

cale

, In

clus

ions

a U

T In

clus

ions

Pip

ing

(bar

s)

a cu

tting

face

s

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Ann

ex D

(in

form

ativ

e)

D

isco

ntin

uitie

s in

forg

ings

Tabl

e D

.1 —

Dis

cont

inui

ties

in fo

rgin

gs

Prod

uct

form

Plan

ar d

isco

ntin

uitie

s Vo

lum

etric

dis

cont

inui

ties

Forg

ings

(f)

M

anuf

actu

ring

proc

ess

Met

hods

S

urfa

ce

Met

hods

S

ub-s

urfa

ce

Met

hods

S

urfa

ce

Met

hods

S

ub-s

urfa

ce

ferr

ous

mat

eria

ls

Dro

p fo

rgin

g P

ress

forg

ing

Han

d fo

rgin

g H

ot

and

cold

st

ampi

ng

MT,

P

T,

ET,

RT,

V

T,U

T

Cra

cks,

In

dent

atio

ns

and

groo

ves,

S

crat

ches

, La

ps

UT,

E

T,

RT

Cra

cks,

La

ps,

Incl

usio

ns

UT,

VT

RT

Em

bedd

ed

scal

ea ,

In

clus

ions

B

urns

UT,

RT

Incl

usio

ns

Bur

st

non

ferr

ous

mat

eria

ls

Dro

p fo

rgin

g P

ress

forg

ing

Han

d fo

rgin

g H

ot

and

cold

st

ampi

ng

PT,

E

T,

RT,

V

T,

UT

Cra

cks,

In

dent

atio

ns

and

groo

ves,

S

crat

ches

, La

ps

UT,

E

T,

RT

Cra

cks,

La

ps,

Incl

usio

ns

UT,

VT,

RT

Em

bedd

ed s

cale

, In

clus

ions

a

Bur

ns

UT,

RT

Incl

usio

ns

Bur

st

a cu

tting

face

s

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Ann

ex E

(in

form

ativ

e)

D

isco

ntin

uitie

s in

tube

s an

d pi

pes

Tabl

e E.

1 —

Dis

cont

inui

ties

in tu

bes

and

pipe

s

Prod

uct

form

Plan

ar d

isco

ntin

uitie

s Vo

lum

etric

dis

cont

inui

ties

Tube

s an

d pi

pes

(t)

Man

ufac

turin

g pr

oces

s M

etho

ds

Surfa

ce

Met

hods

Sub

-sur

face

M

etho

ds

Sur

face

M

etho

ds

Sub

-sur

face

ferr

ous

mat

eria

ls

A

ll

MT,

PT,

R

T,U

T,

VT,

ET*

Dep

endi

ng o

n

man

ufac

turin

g pr

oces

s (s

ee A

nnex

es A

, B,

C)

MT,

RT,

UT,

ET*

Dep

endi

ng o

n

man

ufac

turin

g pr

oces

s (s

ee A

nnex

es A

, B

, C

)

MT,

PT,

R

T,U

T,

VT,

ET*

Dep

endi

ng o

n

man

ufac

turin

g pr

oces

s (s

ee

Ann

exes

A

, B

, C)

MT,

RT,

U

T,ET

* D

epen

ding

on

m

anuf

actu

ring

proc

ess

(see

Ann

exes

A, B

, C

)

non

ferr

ous

mat

eria

ls

A

ll

PT,

RT,

UT,

VT,

ET*

Dep

endi

ng o

n

man

ufac

turin

g pr

oces

s (s

ee A

nnex

es A

, B

, C

)

RT,

UT,

ET*

Dep

endi

ng o

n

man

ufac

turin

g pr

oces

s (s

ee A

nnex

es A

, B

, C

)

PT,

RT,

UT,

VT,

ET*

Dep

endi

ng o

n

man

ufac

turin

g pr

oces

s (s

ee

Ann

exes

A

, B

, C)

RT,

UT,

E

T*

Dep

endi

ng o

n m

anuf

actu

ring

proc

ess

(see

Ann

exes

A, B

, C

)

* if

appl

icab

le

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Ann

ex F

(in

form

ativ

e)

D

isco

ntin

uitie

s in

in-s

ervi

ce in

spec

tion

Tabl

e F.

1 —

Dis

cont

inui

ties

in in

-ser

vice

insp

ectio

n

All

prod

ucts

Plan

ar d

isco

ntin

uitie

s Vo

lum

etric

dis

cont

inui

ties

In S

ervi

ce

Insp

ectio

n M

anuf

actu

ring

proc

ess

Met

hods

S

urfa

ce

Met

hods

S

ub-s

urfa

ce

Met

hods

S

urfa

ce

Met

hods

S

ub-s

urfa

ce

Ferr

ous

mat

eria

ls

all

MT,

P

T,

ET,

V

T,

UT,

RT

Tran

sgra

nula

r cra

cks,

In

terg

ranu

lar

crac

ks,

fatig

ue c

rack

s,

Cra

cks

indu

ced

by:

Eros

ion,

Cor

rosi

on

Impa

ct, W

ear d

amag

e

UT,

R

T,

ET

Any

ext

ende

d

disc

ontin

uity

star

ting

from

the

surfa

ce(in

tern

al

or

exte

rnal

)

MT,

PT,

ET,

V

T, U

T, R

TEr

osio

n,

Cor

rosi

on

Impa

ct, W

ear

dam

age

UT,

RT,

ET

Sub

surfa

ce

cavi

ties

(e.g

. to

be

fo

und

unde

r pa

int

and

clad

ding

due

to

corr

osio

n)

Non

ferr

ous

& a

uste

nitic

m

ater

ials

all

PT,

E

T,

VT,

U

Ta ,

RT

Tran

sgra

nula

r cra

cks,

In

terg

ranu

lar

crac

ks,

fatig

ue c

rack

s,

Cra

cks

indu

ced

by:

Eros

ion,

Cor

rosi

on

Impa

ct, W

ear d

amag

e

UT,

RT

Any

ext

ende

d

disc

ontin

uity

star

ting

from

the

surfa

ce(in

tern

al

or

exte

rnal

)

PT,

ET,

VT,

U

Ta, R

T C

orro

sion

Impa

ct, W

ear

dam

age

UT,

RT,

ET

Sub

surfa

ce

cavi

ties

(e.g

. to

be

fou

nd d

ue t

o pi

tting

cor

rosi

on)

a if

appl

icab

le

CEN/TS 15053:2005

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BS

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DD CEN/TS 15053:2005

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