SN EN 13942 : 2009 CORR 2009

Explanatory Note
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviations
   4.1 Symbols
   4.2 Abbreviations
5 Valve types and configurations
   5.1 Valve types
   5.2 Valve configurations
6 Design
   6.1 Pressure and temperature rating
   6.2 Sizes
   6.3 Face-to-face and end-to-end dimensions
   6.4 Minimum-bore full-opening valves
   6.5 Valve operation
   6.6 Pigging
   6.7 Valve ends
   6.8 Pressure relief
   6.9 Bypass, drain and vent connections
   6.10 Handwheels and wrenches (levers)
   6.11 Locking devices
   6.12 Position indicators
   6.13 Operators and stem extensions
   6.14 Sealant injection
   6.15 Lifting lugs
   6.16 Actuators
   6.17 Drive trains
   6.18 Stem retention
   6.19 Fire safety
   6.20 Anti-static device
   6.21 Design documents
   6.22 Design document review
7 Materials
   7.1 Material specification
   7.2 Service compatibility
   7.3 Forged parts
   7.4 Welding ends
   7.5 Toughness test requirements
   7.6 Bolting
   7.7 Sour service
8 Welding
   8.1 Qualifications
   8.2 Impact testing
   8.3 Hardness testing
9 Quality control
   9.1 General
   9.2 Measurement and test equipment
   9.3 Qualification of inspection and test personnel
   9.4 NDE of repair welding
10 Pressure testing
   10.1 General
   10.2 Stem backseat test
   10.3 Hydrostatic shell test
   10.4 Draining
11 Marking
   11.1 Requirements
   11.2 Marking sample
12 Storage and shipping
   12.1 Painting
   12.2 Corrosion prevention
   12.3 Openings
13 Documentation
Annex A (informative) Purchasing guidelines
Annex B (normative) Supplementary NDE requirements
Annex C (normative) Supplementary test requirements
Annex D (normative) Supplementary documentation requirements
Bibliography