A6. Description of the modelling scenarios

A number of areas and phenomena were relevant to modelling within HYPER. These include:

  1. High and pressure releases;
  2. Foreseeable and catastrophic releases;
  3. Explosive atmospheres both inside and outside equipment casing;
  4. Explosive atmospheres inside a room or building;
  5. Quiescent or turbulent explosive atmospheres;
  6. Early and late ignition;
  7. Explosion or jet fire;
  8. Mitigated and non-mitigated scenarios.

A final list of the scenarios determined in WP1 is given in Table 1.


Scenario

Title

A

High pressure releases - safety distances

B

Small foreseeable releases - safety concept

C

Catastrophic failure of the system - internal primary ignition

D

Catastrophic failure of the system - external primary ignition

E

Effects of barriers and walls

F

Leak detection. Sensor and control


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