99/707163 DC : DRAFT APR 99

Foreword
1 Scope
2 Normative references
3 Definitions and abbreviations
4 Limiting devices and system
   4.1 General
   4.2 Electrical equipment
5 Pressure limitation
   5.1 General requirements
       5.1.1 Operation
       5.1.2 Protection
       5.1.3 Pressure limitation
       5.1.4 Capacity
       5.1.5 Liquid applications
       5.1.6 Vacuum applications
       5.1.7 Failure of components
       5.1.8 Selection
       5.1.9 Materials
   5.2 Safety valves
       5.2.1 Design
       5.2.2 Setting
       5.2.3 Sizing
   5.3 Bursting disc safety devices
       5.3.1 Design
       5.3.2 Selection, application and installation
   5.4 Safety valves and bursting disc safety devices in
       combination
       5.4.1 Design
       5.4.2 Application
   5.5 CSPRS
   5.6 Other safety devices
6 Temperature limitation
   6.1 General
   6.2 Material and design
   6.3 Internal protection tubes
   6.4 External chambers
7 Hazard protection
   7.1 Internal
   7.2 External
   7.3 Static electricity
8 Indicators, signals and warning devices
   8.1 Pressure indicators
   8.2 Temperature indicators
   8.3 Signals and warning devices
9 Installations
   9.1 General
   9.2 Safety valves or the main valve of a CSPRS
       9.2.1 General
       9.2.2 Inlet piping to safety valves
       9.2.3 Outlet systems
   9.3 Bursting disc safety devices
   9.4 Safety valves and bursting disc safety devices
       in combination
       9.4.1 Combination
       9.4.2 Inlet piping to combination
       9.4.3 Outlet from combination
   9.5 Isolation of pressure relief devices
       9.5.1 Isolating valves
       9.5.2 Simultaneous isolation of relief device(s)
             and the pressure source from piping system
       9.5.3 Multiple pressure relief devices
       9.5.4 Locking of isolating valve
       9.5.5 Venting
10 Inspection and maintenance
11 Marking
Annex A (normative) Relationship of pressure terms
                    A.1 Safety valves
                    A.2 Bursting disc safety devices
Annex B (informative) Sizing of multiple safety valves
Annex ZA (informative) Clauses of this European standard
         Addressing essential requirements or other
         provisions of EU directives
Tables
Figures