ДСТУ EN 13067:2016. Plastics welding personnel — Qualification testing of welders — Thermoplastics welded assemblies (61683)

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EN 13067:2012

Plastics welding personnel — Qualification testing of welders — Thermoplastics welded assemblies

прийнято як національний стандарт
методом «підтвердження» за позначенням

ДСТУ EN 13067:2016
(EN 13067:2012, IDT)

Персонал, який виконує зварювання пластмас. Кваліфікаційні випробування зварювальників.
Зварні термопластичні конструкції

З наданням чинності від 2016-07-01EUROPEAN STANDARD

NORME EUROPEENNE

EUROPAISCHE NORM

ICS 03.100.30; 25.160.10

EN 13067

November 2012

Supersedes EN 13067:2003

English Version

Plastics welding personnel - Qualification testing of welders -
Thermoplastics welded assemblies

Personnel en soudage des plastiques - Epreuve de KunststoffschweiBpersonal - Anerkennungspriifung von

qualification des soudeurs - Assemblages soudes SchweiBem - Thenmoplastische SchweiBverbindungen

thermoplastiques

This European Standard was approved by CEN on 22 September 2012.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION СОМІТЁ EUROPEEN DE NORMALISATION EUROPAISCHES KOMITEE FUR NORMUNG

M

Ref. No. EN 13067:2012: E

© 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members

.Contents Page

Foreword 3

Introduction 4

1. Scope 5

2. Normative references 6

3. Terms and definitions 6

4. Admission to the qualification tests 8

5. Testing of skill and knowledge 9

6. Duty of Plastics Welding Examiner and invigilator 16

7. Range of qualification 16

8. Welding of test piece 16

9. Test piece and test specimens, shapes and dimensions 16

10. Evaluation and acceptance criteria of test piece(s) and test specimens 24

11. Test result and qualification test certificate 28

12. Failed test 29

13. Period of validity 29

14. Qualification test certificate renewal 30

1. (informative) Welding recording sheet 31

2. (informative) Welders qualification tests certificate format 32

3. (informative) PWE evaluation sheet for practical test 33

Bibliography 42Foreword

This document (EN 13067:2012) has been prepared by Technical Committee CEN/TC249 “Plastics”, the secretariat of which is held by NBN.

This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 2013, and conflicting national standards shall be withdrawn at the latest by May 2013.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.

This document supersedes EN 13067:2003.

In this revision, the scope of this standards includes solvent welding: socket and covers the welding of the polypropylene (PP) lining membranes (group 9: PP).

According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.Introduction

This standard covers the principles to be observed in the qualification testing of welder performance for the welding of thermoplastic materials.

The ability of the welder to follow verbal or written instructions and testing of his skill are important factors in ensuring the quality of the welded product.

This standard is intended to provide the basis for the mutual recognition by examining bodies for qualification relating to welders competence in the various fields of application.1 Scope

This European Standard specifies the method of testing the knowledge and skill of a welder who is required to carry out welds on thermoplastics in new constructions and repair work.

The skill examination of a welder is an essential condition for the assurance of the quality of the welding work.

The application of this standard guarantees that the examination is carried out according to a uniform test procedure.

This European Standard applies when the contractor or the authorities responsible for the application require it.

Gas and water utility network industries with alternative qualification programmes are excluded from this standard.

This European Standard applies to the following welding processes:

• hot gas welding: round nozzle, high speed nozzle, wedge;

• extrusion welding;

• heated tool welding: butt, saddle, socket, wedge;

• electrofusion welding: socket, saddle;

• solvent welding: socket.

This European Standard applies to the welding of the following products:

• sheet;

• pipe;

• fittings;

• lining membrane.

This European Standard covers the welding of the following groups of materials:

1. for sheets, pipes and fittings:

1. group 1: PVC (including all kinds of PVC-U, PVC-C), ABS;

2. group 2: PP (including all kinds of PP);

3. group 3: PE (including all kinds of PE);

4. group4:PVDF;

5. group 5: ECTFE or PFA or FEP;

2. for lining membranes:

1. group 6: PVC-P;

2. group 7: PE (including all kinds of PE);

3. group 8: ECB;

4. group 9: PP.

2. Normative references

The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

EN 12814-1, Testing of welded joints of thermoplastics semi-finished products — Part 1: Bend test

EN 12814-2:2000, Testing of welded joints of thermoplastics semi-finished products —Part 2: Tensile test

EN 12814-4, Testing of welded joints of thermoplastics semi-finished products — Part 4: Peel test

EN 12814-8, Testing of welded joints of thermoplastics semi-finished products —Part 8: Requirements

EN 13100-1, Non destructive testing of welded joints of thermoplastics semi-finished products — Part 1: Visual examination

EN 14728, Imperfections in thermoplastic welds — Classification

EN ISO/IEC 17024:2003, Conformity assessment — General requirements for bodies operating certification of persons (ISO/IEC 17024:2003)

EN ISO/IEC 17025, General requirements for the competence of testing and calibration laboratories (ISO/IEC 17025)

2. Terms and definitions

For the purposes of this document, the terms and definitions from EN ISO/IEC 17024:2003 and the following apply.

AD-WLD break

failure mode in an extrusion welded membrane peel test specimen where the failure is through the weld material

certificate issuing authority

establishment responsible for approving the PWE and or the Invigilator

invigilator

qualified person approved by Certificate Issuing Authority (CIA) who can supervise the practical and theoretical tests

Note 1 to entry: 3.3 and 3.5 can be the same person.

manufacturer

company, contractor or organisation who is responsible for the welding

Plastics Welding Examiner

PWE

qualified person approved by Certificate Issuing Authority (CIA) who verifies the compliance with this standard

qualification test

theoretical and practical tests in order to verify the knowledge and the skill of the welder

range of qualification

welding processes, types of joint, materials, thicknesses and diameters for which a welder is qualified

test piece

assembly which is welded during the practical test

3.9

test specimen

part or portion cut from the test piece for the test specified

3.10

test house

establishment having all relevant test equipment to carry out the required tests and working in compliance with EN ISO/IEC 17025

3.11

training centre

educational establishment for training plastics welding personnel and/or Plastics Welding Examiner, approved by CIA

3.12

welding process

technique characterized by the method of softening to obtain permanent assembly

3.12.1

electrofusion welding

softening of fitting and pipe surfaces to be welded is obtained by means of a heating element embedded in the fitting which remain between welded joints

3.12.2

extrusion welding

welding process in which an extruder unit with a melting chamber gives the extruded material required by the thickness and shape of the joint. Hot air or inert gas heats simultaneously the parent material

3.12.3

heated tool welding

welding process in which the joint surfaces are adequately heated by exposure, through direct contact with heated elements and are welded under pressure, which includes butt fusion welding (also called hot plate welding, platen welding or mirror welding) and socket fusion welding

3.12.4

heated wedge

welding process in which the lining membrane welded is gripped by rollers which guide and propel the welding machine which uses either hot gas to heat the lining membrane and the wedge to effect the weld or electrically heated wedge to heat the lining membrane in the area being welded

high-speed nozzle

welding process in which the welding rod is suitably guided and pre-heated and the nozzle tip is provided with a profiled area to apply the welding pressure

hot gas welding

welding process in which the materials to be unified are softened by hot air or inert gas and are pressed together

round nozzle

welding process in which the pressure is applied via the welding rod or a suitable attachment such as a pressure roller

solvent welding

softening of fitting and pipe surfaces, by means of a solvent contained in the cement

Note 1 to entry: After suitable cure time, the solvent dries leaving the parent material in the interface between welded joints.

3.13

welding Procedure Specification

WPS

document providing in detail the required variables for a specific application to assure repeatability

3.14

welding record sheet

document recording in detail the variables used during the practical test

3.15

welder

person making a welded assembly by any process, whose manual skill and knowledge are two of the determining factors influencing the quality of the welded joint, or person performing a welding operation by means of mechanical or automatic equipment

4. Admission to the qualification tests

Only welders whose training and/or for whose previous activities show that they are likely to pass the planned test may be admitted. As a rule this is the case if one of the following conditions is met:

• completed apprenticeship as plastics fabricator;

• at least two years experience as a plastics welder confirmed by manufacturer’s declaration;

• completion of both a technical and practical training course in preparation for the plastic welders qualification test.

An example of a suitable training course is defined in Entry [1] in the Bibliography or may be identified in national standards.

4. Testing of skill and knowledge

   1. General

During the qualification test, the welder shall demonstrate his practical skill according to 5.2 and his theoretical knowledge according to 5.3.

2. Practical test

This test is carried out under the supervision of the PWE or Invigilator.

The welder shall complete the test piece specified by the required sub-group in Table 1 or Table 2 in accordance with the relevant WPS.

All welding equipment, materials and documents necessary to complete the test piece shall be available to the welder.

All welding shall be performed in a horizontal position.

The time taken by the welder to complete the test piece shall correspond to that taken under production conditions.

3. Theoretical test

This test is carried out under the supervision of the PWE or Invigilator.

The welder's knowledge of the practical working rules for skilful and safe working shall be evaluated in the theoretical test.

The welder shall answer a minimum of 20 multiple-choice questions relevant to the qualification testing.

Completion of the theoretical test shall not exceed one hour, be continuous without access to teaching aids.

The questions shall cover the following subjects, as appropriate:

• rules for welding of thermoplastics to which the test is designed to apply, meaning of the welding signs and symbols of the range of work;

• operation and control of the welding equipment;

• welding processes;

• knowledge concerning on-site welding;

• correct preparation of the work pieces for welding;

• knowledge concerning the characteristics of thermoplastics within the sub-groups;

• knowledge concerning the characteristics of solvents / cements within the relevant sub-group;

• preventing and correcting faults when making welds;

• knowledge concerning the types of imperfections for the applied welding process(es);

• knowledge concerning the WPS and welding record sheet;

• awareness of the consequences of misapplying welding parameters and/or procedures;

• knowledge concerning non-destructive examinations and destructive tests necessary for the applied welding process(es);

awareness of health and safety requirements for the above work.Group of material	Sub groups	Type of product S = sheet P = pipe e„ = nominal wall thickness ck = nominal pipe outside diameter SDR=d„/e„		Welding process	Weld form6	Examination and testing Type of testa	Test piece according to Figure	Range of qualification
								Dimensions	Type of joint °
1 PVC	1.1	S	e„=5	Hot gas round nozzle	V	V/ В f+r	1	All e„	v,x,±
	1.2	S	e„=5	Hot gas high speed nozzle	V	V/ В f+r	1	All en	V,X,±
	1.3	S	e„=5	Heated tool	][	V/B	1	— 3	][
	1.4	p	d„=40 and tf„=110 SDRS21	Solvent Welding	I	V/Vls	4	dn< 160	I
	1.5	p	4^160 SDR521	Solvent Welding	I	V/Vls	4	4,2160	I
2 PP	2.1	s	en=9 or 10	Hot gas high speed nozzle	X	V/ В f+r	1	All e„	y,x,±
	2.2	s	e„=9 or 10	Extrusion continuous	у	V/ В f+r	1	e„a 3	y,x,±
	2.3	s	e„=9 or 10	Heated tool	][	V/ В	1	e„23	][
	2.4	p	Л=110 SDRS17.6	Heated tool	][	V/B	2	e„S3 d„< 315	][
	2.5	p	cW>400 SDRS17.6	Heated tool	][	V/Bs	2	dn> 315	][
	2.6	p	dn=63 SDR<17,6	Heated toolc	I	V/ Pc	4	All dn	I
	2.7	p	dn=63 SDR<17,6	Electrofusion	I	V/Pc	4	Alld„	I

Dimensions in millimetres

Table 1 — Sheets, pipes and fitting details of tests (1 of 3)








Group of material

Sub groups

Type of product S = sheet P = pipe en = nominal wall thickness d„ = nominal pipe outside diameter SDR=dn/e„

Welding process

Weld formb

Examination and testing Type of test ’

Test piece according to Figure

Range of qualification

Dimensions

Type of joint °

3 PE

3.1

S

e„=10

Hot gas high speed nozzle

X

V/ В f+r

1

All e„

У.Х.1

3.2

S

e„=10

Extrusion continuous

V

V/ В f+r

1

e„>3

V,X,_L

3.3

S

e„=10

Heated tool

К

V/B

1

e„a 3

11

3.4

P

110<d„<180 SDR<17,6

Heated tool

II

V/T

2

d,< 315

][

3.5

P

t/n>400 SDR<17,6

Heated tool

II

V/T

2

dn>315

][

3.6

P

90<d„<125 SDR<17,6

Electrofusion

і

V/ Pc

4

dn<315

1

3.7

P

dp>355 SDR<17,6

Electrofusion

і

V/Pd

4

d„>315

1

3.8

P

d„<63 on 90<dn<125 SDR<17,6

Electrofusion

•t

V/Pc

5

All d„

t.

3.9

P

d„=63 SDR=11

Heated toolc

і

V/ Pc

4

All 4,

1

3.10

p

dn=32 on d„=90 SDR=11

Heated tool

•t.

V/ Pc

5

All 4,

t

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