Reactor Raw Material Undercharge

1
Reactor Raw Material Undercharge
No cross-check with storage tanks (T-1/T-2)
Used level for storage tank (T-2) not Reactor
(R-1)
Charge calculation not made
Raw material undercharge led to an unplanned
runaway reaction and explosion because as
additional reactants were added (in correct
amounts) later in the batch there was not enough
of the initial reactant available causing the
additional reactants to react with themselves
creating the unexpected reaction.