NZ Refining hydrocracker shut down after second leak

NZ Refining hydrocracker shut down after second leak
Sophie Boot
By Sophie Boot June 26 (BusinessDesk) - New Zealand Refining's hydrocracker unit has been shut down after a newly installed valve failed, lengthening delays from its scheduled refinery maintenance shutdown. A hydrocracker uses hydrogen to break down heavy oil fractions, recovered from crude oil, to produce petrol, kerosene - used as jet fuel - and diesel. NZ Refining is New Zealand's only oil refinery, and describes its hydrocracker as "the heart of the refinery." The Whangarei-based company said the unit was shut down last night "foll...