ДСТУ EN 12516-2:2022 Промислова арматура. Розрахункова міцність корпусу. Частина 2. Метод розрахунку сталевих корпусів клапанів (EN 12516-2:2014 + A1:2021, IDT)



ДСТУ EN 12516-2:2022
(EN 12516-2:2014 + A1:2021, IDT)

Промислова арматура. Розрахункова міцність корпусу.
Частина 2. Метод розрахунку сталевих корпусів клапанів

 
   
 
 
     
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 Symbols and units

4 General conditions for strength calculation

5 Design pressure

6 Nominal design stresses for pressure parts other than bolts

6.1 General

6.2 Steels and cast steels other than defined in 6.3, 6.4 or 6.5

6.3 Austenitic steel and austenitic cast steel with a minimum rupture elongation > 30 %

6.4 Austenitic steel and austenitic cast steel with a minimum rupture elongation > 35 %

6.5 Ferritic and martensitic cast steel

6.6 Creep conditions

7 Calculation methods for the wall thickness of valve bodies

7.1 General

7.2 Wall thickness of bodies and branches outside crotch area

7.3 Wall thickness in the crotch area

7.4 Examples of pressure-loaded areas A_p and metallic cross-sectional areas A_f

8 Calculation methods for bonnets and covers

8.1 General

8.2 Covers made of flat plates

8.3 Covers consisting of a spherically domed end and an adjoining flanged ring

8.4 Dished heads

9 Calculation method for pressure sealed bonnets and covers

10 Calculation methods for flanges

10.1 General

10.2 Circular flanges

10.3 Oval flanges

10.4 Rectangular or square flanges

10.5 Calculation of the bolt diameter

11 Calculation methods for glands

11.1 Loads

11.2 Gland bolts

11.3 Gland flanges

11.4 Other components

12 Fatigue

13 Marking

Annex A (informative) Characteristic values of gaskets and joints

Annex B (informative) Calculation procedure

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

Bibliography