ДСТУ EN 12952-2:2022 Водотрубні котли та допоміжні установки. Частина 2. Матеріали для частин, що працюють під тиском, котлів та аксесуарів (EN 12952-2:2021, IDT)

ДСТУ EN 12952-2:2022
(EN 12952-2:2021, IDT)

Водотрубні котли та допоміжні установки. Частина 2. Матеріали для частин, що працюють під тиском, котлів та аксесуарів

 
   
 
 
     
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 Selection of materials with regard to service conditions

4.2 Selection of materials with regard to fabrication

4.3 Material specification

4.3.1 General

4.3.2 European Standards

4.3.3 European approvals for materials

4.3.4 Particular material appraisals

4.4 Consideration of special materials properties

4.5 Contents of material specification

4.6 Compliance and inspection documentation of materials

5 Material for pressure parts

5.1 Materials covered by harmonized European product Standards for pressure purposes

5.1.1 Flat products, forgings, castings, tubes, fittings, flanges and valve bodies

5.1.2 Cast iron

5.1.3 Studs, bolts and nuts

5.1.4 Welding consumables

5.1.5 Requirements for plates used for heads

5.1.6 Requirements for non-destructive examination

5.1.7 Marking

5.2 Material covered by European approvals of materials for pressure equipment -- technical requirements

5.2.1 General

5.2.2 Manufacture

5.2.3 Heat treatment condition

5.2.4 Chemical composition

5.2.5 Mechanical and technological properties

5.3 Materials with particular material appraisals

6 Materials for non-pressure parts

Annex A (normative) Materials covered by European material Standards

A.1 Pressure parts

A.2 Fittings

A.3 Flanges

A.4 Valves

Annex B (normative) Establishment of creep rupture strength values for new materials

Annex C (normative) Special requirements for composite tubes

C.1 General

C.2 Special requirements for composite tubing

C.2.1 Composite tubing

C.2.2 General

C.2.3 Chemical composition

C.2.4 Mechanical and technological properties

C.2.4.1 Tensile test of ferritic pressure retaining inner core

C.2.4.2 Ring expanding test (composite tube)

C.2.5 Tolerances

C.2.5.1 Permissible variations in Outside diameter and wall thickness

C.2.5.2 Permissible variations in straightness

C.2.6 Surface finish

C.2.7 Ultrasonic testing

C.2.7.1 Ultrasonic testing of the metallurgical bond in composite tubes

C.2.7.1.1 Extent of testing

C.2.7.1.2 Reference standard

C.2.7.1.3 Acceptance criteria

C.2.7.2 Ultrasonic testing of composite tubes concerning longitudinal and transverse imperfections

C.2.7.2.1 Method of testing

C.2.7.2.2 Reference standard

C.2.7.2.3 Calibration

C.2.8 Thickness check of stainless steel component

C.2.8.1 General

C.2.8.2 Calibration

C.2.8.3 Acceptance criteria

C.2.9 Summary of tests and examinations

C.3 Marking

C.3.1 General

C.3.2 Additional marking requirements

Annex D (informative) Significant technical changes between this document and the previous edition

Annex ZA (informative) Relationship between this European Standard and the essential requirements of Directive 2014/68/EU aimed to be covered

Bibliography