Staff at BP petrol terminals around the country have
undergone extra training to ensure an incident where petrol
was contaminated with water at a terminal in Dunedin last
month is not repeated.
This comes as an investigation confirmed the contamination
happened during ''routine pipeline testing'' on November 2 at
the industry terminal in Dunedin, which is owned by BP and
operated by New Zealand Oil Services Ltd.
As a result of the contamination, about 30 cars encountered
engine problems. They had been filled up with 91-octane
petrol at three BP sites, two in Dunedin and one in Oamaru,
and Mobil Northgate in Cumberland St.
BP communications and external affairs manager Jonty Mills
said an investigation into the contamination found it
occurred when staff were undertaking ''routine integrity
pressure testing of a pipeline'' using water. He said the
test was done once every five years.
''It is important to note that water is used as a safety
precaution, due to the nature of pressure-testing procedures.
''It's a normal procedure. It's just that there were some
deficiencies in the process around doing it,'' Mr Mills said.
Since the incident, operational and management staff from
around New Zealand had attended workshops in Wellington where
the incident and the proper way of pressure testing were
Mr Mills would not reveal the amount BP had spent repairing
damaged engines, saying it was ''commercially sensitive'' and
the claims process was continuing.