7.9 Example: Wet Grinding of Cyanuric Chloride
195
Table 7.14
Qualitative probability analysis for the process step of grinding cyanuric chloride. The qualitative estimate of probability for each entry is shown
in italics
Process failure
Process deviation
Safeguard failure
(prevention)
Loss event
Safeguard failure
(mitigation)
Consequence
Failure in the ice supply
(medium)
Temperature too high
(medium)
Failure of temperature
alarm (medium)
Decomposition of
cyanuric chloride
(medium)
Temperature/ pH
stabilization (medium)
Thermal runaway and
thermal explosion
(medium)
Accidental injection of steam
in the reactor (low)
pH too low (medium)
Failure of pH alarm
(high)
Ice quenching
(medium)
HCl release (medium)
Failure of temperature
measurement (medium)
Temp./pH stabilization
(high)
Depressurization
(medium)
Failure in buffer supply
(medium)
Rupture disk activation
(low)
Failure of pH measurement
(high)
Failure in the electricity
supply (medium)