DIN EN ISO 23251:2007-12
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRIES - PRESSURE-RELIEVING AND DEPRESSURING SYSTEMS
Hardcopy , PDF
10-01-2017
01-01-2007
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Causes of overpressure
4.1 General
4.2 Overpressure protection philosophy
4.3 Potentials for overpressure
4.4 Recommended minimum relief system design content
4.5 List of items required in flare-header calculation
documentation
4.6 Guidance on vacuum relief
5 Determination of individual relieving rates
5.1 Principal sources of overpressure
5.2 Sources of overpressure
5.3 Effects of pressure, temperature, and composition
5.4 Effect of operator response
5.5 Closed outlets
5.6 Cooling or reflux failure
5.7 Absorbent flow
5.8 Accumulation of non-condensables
5.9 Entrance of volatile material into the system
5.10 Failure of process stream automatic controls
5.11 Abnormal process heat input
5.12 Internal explosion (excluding detonation)
5.13 Chemical reaction
5.14 Hydraulic expansion
5.15 External pool fires
5.16 Jet fires
5.17 Opening manual valves
5.18 Electric power failure
5.19 Heat-transfer equipment failure
5.20 Vapour depressuring
5.21 Special considerations for individual
pressure-relief devices
5.22 Dynamic simulation
6 Selection of disposal systems
6.1 General
6.2 Fluid properties that influence design
6.3 Atmospheric discharge
6.4 Disposal by flaring
6.5 Disposal to a lower-pressure system
6.6 Disposal of liquids and condensable vapours
7 Disposal systems
7.1 Definition of system design load
7.2 System arrangement
7.3 Design of disposal system components
7.4 Flare gas recovery systems
Annex A (informative) Determination of fire relief requirements
Annex B (informative) Special system design considerations
Annex C (informative) Sample calculations for sizing a subsonic
flare stack
Annex D (informative) Typical details and sketches
Annex E (informative) High integrity protection systems (HIPS)
Bibliography
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