For each realistic deviation identified, the associated Consequences are analysed without accounting for the existing safeguards. Related hazards are listed such as: fire, explosion, release of flammable or toxic material, environmental damage, off-spec. products, loss of production, etc.

Consequences may cause hazard/risk to the following protection categories:

  • Personal safety (site personnel, off-site third parties)
  • Environment
  • Asset, Financial impact
  • Owner/Operator Reputation
  • Availability

In evaluating the consequences, it is normal to account for the design margins to assess whether a loss of containment (LOC) can occur, e.g. overpressure and LOC is typically credible when pressure can become higher than the hydraulic test pressure, rather than the simple design pressure (DP) or Maximum Incidental Pressure (MIP) of the pipe.

Category: HAZOP