The company identified the glitch earlier in October while it was in the process of resuming operations at its nitric acid and ammonium nitrate units after annual maintenance works.
The process of restarting the two units will now continue, Neochim said in a bourse filing on Tuesday.
Additionally, the company expects to resume production of ammonia and ammonium bicarbonate as planned.
As at CEST 0955, shares in Neochim traded flat at 41 levs on the Bulgarian Stock Exchange.
(1 euro = 1.95583 levs)