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3. Method for sizing the safety device
3.1 Presentation
This section presents the information needed for sizing a safety device in any system that is to be protected. First of all, the discharge mass flow rate must be determined. Knowledge of the thermodynamic conditions upstream and downstream of the safety device is then used to determine the minimum flow cross section A of the safety device with a simple mass velocity model. The designer thus has a way to check this last calculation, which in principle is the responsibility of the manufacturer of the safety device.
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Method for sizing the safety device
Conclusion
Literature references
Literature references
Regulations
European Directive DESP/97/23/EC.
Machinery Directive 89/392/EEC and 91/368/EEC.
European Directive 2008/68/EC. inland transport of dangerous goods
Arrêté du 21 septembre 1978 du Journal officiel de la République française relative aux recipients à double paroi utilisés pour l’emmagasinage des gaz liquéfiés à basse température. Version consolidée au...
Standards
- Récipients fixes isolés sous vide - NF EN 13458 -
- Récipients transportables isolés sous vide - NF EN 1251 -
- Récipients cryogéniques, dispositifs de protection contre les surpressions. Partie 3 : détermination du débit à évacuer, capacité et dimensionnement - NF EN 13648-3 - 12-02
- Dispositifs de sécurité pour protection contre les pressions excessives. Partie 1 : Soupapes de sûreté - NF EN ISO 4126-1 -...
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