ДСТУ EN 14917:2022 Металеві сильфонні компенсатори для застосування під тиском (EN 14917:2021, IDT)

ДСТУ EN 14917:2022
(EN 14917:2021, IDT)

Металеві сильфонні компенсатори для застосування під тиском

 
   
 
 
     
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 Classification

4.1 Classification of expansion joints

4.1.1 General

4.1.2 Axial

4.1.3 Angular

4.1.4 Lateral

4.1.5 Universal

4.1.6 Pressure balanced designs (axial or universal)

4.2 Classification of the parts of expansion joints

4.2.1 Main pressure-bearing parts (A)

4.2.2 Pressure parts other than main pressure-bearing parts (B)

4.2.3 Attachments to main pressure-bearing parts and to pressure parts (C)

4.2.4 Other parts (D)

5 Materials

5.1 General

5.1.1 Materials for pressure-bearing parts

5.1.2 Materials for parts attached to pressure-bearing parts

5.1.3 Materials for non-pressure parts

5.2 Pressure-bearing parts

5.2.1 Bellows

5.2.2 Other pressure-bearing parts

5.2.3 Ductility

5.2.4 Brittle fracture

5.3 Material documentation

6 Design

6.1 General

6.1.1 Symbols

6.1.2 Basic design criteria

6.1.3 Allowable stresses

6.1.4 Additional loadings

6.2 Bellows design

6.2.1 Purpose

6.2.2 Conditions of applicability

6.2.3 Design of U-shaped unreinforced bellows

6.2.4 Design of U-shaped reinforced bellows

6.2.5 Design of toroidal bellows

6.2.6 Fatigue

6.2.7 Bellows under the influence of movements

6.2.8 Equivalent axial displacement per corrugation

6.2.9 Forces and moments on pressurized expansion joints

6.2.10 Torsion acting on bellows (unreinforced or reinforced)

6.3 Internal sleeve

6.3.1 Scope

6.3.2 Additional symbols

6.3.3 Flow velocity

6.3.4 Design conditions

6.4 Hardware

6.4.1 General

6.4.2 Design parameters

6.4.3 Hardware parts

6.4.4 Permanent joints

7 Manufacturing

7.1 General

7.2 Materials

7.2.1 General

7.2.2 Material traceability

7.3 Permanent joints

7.3.1 General

7.3.2 Process and personal

7.3.3 Repair and rework during manufacturing

7.4 Forming of the bellows

7.4.1 Forming processes

7.4.2 Heat treatment

7.5 Tolerances

7.5.1 General

7.5.2 Bellows

7.5.3 Expansion joint

7.6 Production tests

8 Testing, inspection and documentation

8.1 General

8.2 Abbreviations

8.3 Documents

8.4 In-process inspection and testing

8.4.1 General

8.4.2 Materials

8.4.3 Permanent joints

8.4.4 Non-destructive testing of welds

8.5 NDT methods

8.5.1 Quality level

8.5.2 Acceptance levels and testing techniques

8.5.3 Non-destructive testing Personnel qualifications and approval

8.5.4 Non-destructive testing documentation

8.6 Final assessment and documentation

8.6.1 General

8.6.2 Final inspection

8.7 Documentation

8.7.1 Final documentation package

8.7.2 Declaration/certification

8.7.3 Operating instructions

9 Marking and labelling

10 Handling and installation

10.1 General instructions

10.2 Packaging and storage

10.3 Installation

10.4 Unrestrained expansion joints

10.5 Restrained expansions joints

Annex A (informative) Categories of expansion joints

Annex B (informative) Specification for materials 1.4828, 1.4876, 2.4360 and 2.4858

Annex C (informative) Incorporation of expansion joints into piping or pressure vessels

Annex D (informative) Calculation methods for systems of pipes containing expansion joints

Annex E (informative) Explanatory notes on the design of expansion bellows

Annex F (informative) Procedure for setting-up a design fatigue curve

Annex G (informative) Polynomial approximations for coefficients Cp, Cf, Ctf

Annex H (informative) Required design data and information

Annex I (informative) Expansion joints risk analyses

Annex J (informative) Additional material properties

Annex K (normative) Hardware calculation

Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 2014/68/EU

Bibliography