ДСТУ EN 12732:2022 Газова інфраструктура. Зварювання сталевих трубопроводів. Функційні вимоги (EN 12732:2021, IDT)

ДСТУ EN 12732:2022
(EN 12732:2021, IDT)

Газова інфраструктура. Зварювання сталевих трубопроводів. Функційні вимоги

 
   
 
 
     
Не є офіційним виданням.
Офіційне видання розповсюджує національний орган стандартизації
(ДП «УкрНДНЦ» http://uas.gov.ua)

Contents

European foreword

1 Scope

2 Normative references

3 Terms and definitions

4 General requirements

4.1 General

4.2 Quality system requirements

4.3 Welding contractors

4.4 Welding procedure requirements

4.5 Welders

4.6 Welding supervisory and coordination personnel

4.7 Non destructive testing (NDT)

4.8 Destructive testing (DT)

5 Production welding

5.1 General

5.2 Working area

5.3 Layout of weld joints

5.4 Types of weld joints

5.5 Joint preparation

5.6 Preheating

5.7 Tackling

5.8 Welding

5.9 Actions after welding

5.10 Repair of weld defects

5.11 Destructive testing of production welds for DP over 16 bar

6 Attachment, and in- service welding

6.1 General

6.2 Attachment of structural parts

6.3 Attachment of cathodic protection connections

6.4 Hot- tapping and other welding work on in- service pipelines

7 Inspection of the weld joint

7.1 General

7.2 Scope of inspection

7.3 Non- destructive testing, assessment levels and acceptance criteria

7.4 Time of inspection

7.5 Tie in welds for DP over 16 bar

7.6 Recording of test results

7.7 Requirements for records and documentation

8 Metering, regulating and compressor stations

Annex A (normative) Qualification of pipeline welders and operators of mechanized welding equipment for steel pipelines

A.1 General

A.2 Additional requirements to EN ISO 9606-1:2017 and EN ISO 14732:2013

A.3 Additional requirements for operators of mechanized welding equipment

Annex B (informative) Testing on lamination defects

Annex C (informative) Time- of- flight diffraction technique (TOFD)

C.1 General

C.2 Additional and substitutional requirements to EN ISO 10863:2011

Annex D (normative) Critical aspects for hot- tap welding or welding on in- service pipelines

D.1 General

D.2 procedural requirements

D.3 Supervision

D.4 Safety precautions

D.5 Welding consumables

D.6 Welding procedure specification (WPS)

D.7 Welding procedure qualification for in- service welding

D.8 Qualification of the welder

D.9 Weld preparation long seam

D.10 Weld preparation circular seam

D.11 Repairs

D.12 Non- destructive testing

D.13 Pressure test

D.14 Documentation

Annex E (normative) AUT examination of joints

E.1 Extent of this annex

E.2 General Requirements

E.3 Field Inspection

E.4 Adjustments of the AUT system

E.5 Acceptance criteria tier 1

E.6 Acceptance criteria tier 2

Annex F (informative) Manual ultrasonic testing of weld joints for wall thickness between approximately 6 mm and 8 mm

F.1 General

F.2 Setting of range

F.3 Sensitivity adjustment when using the Distance Gain Size method

Annex G (normative) EPRG acceptance criteria

G.1 General

G.2 EPRG defect acceptance levels and defect limits

G.3 Requirements

Annex H (normative) Visual acceptance criteria according to EN ISO 5817:2014

Annex I (normative) RT acceptance criteria according to EN ISO 10675 and EN ISO 5817:2014

Annex J (normative) Alternative method and acceptance criteria for UT inspection

J.1 Distance Gain Size method

J.2 Comparative Element method

J.3 General

Annex K (informative) Brazing and stud welding of connections for cathodic protection systems

K.1 Joining techniques

K.2 Procedure qualification

K.3 Operation qualification

K.4 Production joints

Annex L (informative) Significant technical changes between this European Standard and the previous edition

Bibliography