We share what we learn
Articles.
Our engineers write about the technical challenges, regulatory changes, and industrial engineering insights we encounter in our project work across mechanical, process, and structural disciplines.
Geothermal
Geothermal Supply to Pellet Plant
Natures Flame operate a wood pellet manufacturing plant in Taupo utilising waste wood from New Zealand pine, dried with up to 22MW of renewable geothermal energy purchased from Contact Energy.
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Hazardous substances
Crackdown on Hazardous Substances (HS) Regulations
Some of our clients have recently been required to provide documentation retrospectively to regain certification for HS piping and vessels designed by others. Here is what an inspector looks for.
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Safety in design
Safety in Design and at Construction Sites
Section 39 of the Health and Safety at Work Act 2015 specifically targets designers. We must design out hazards or advise others of the remaining hazards present during construction, operation, maintenance or demolition.
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Process heat
Biomass Boilers
In 2018 Dobbie were involved with three biomass steam boiler projects ranging from 4MW to 14MW output, as engineer to the contract on specification, tender evaluation and commissioning.
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Geothermal
Geothermal
This year Dobbie presented at the annual Geothermal Workshop and updated the NZ geothermal industries on recent Direct Heat projects that Dobbie have provided design expertise for.
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Decarbonisation
Energy Efficiency Funding
EECA have shown that meat and dairy plants are the biggest users of industrial heat in New Zealand. More than half of the approximately 200 plants nationwide use coal fired boilers.
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Pressure equipment
Seismic Resilience of Pressure Equipment
The required seismic loads that a new building must withstand are determined from NZ Standard NZS 1170.5. There have been issues interpreting this standard when used for pressure equipment.
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Pressure equipment
Modifying Pressure Equipment
New Zealand's pressure equipment regulations require modifications to existing pressure pipes and vessels to go through the same process that applies to new pressure equipment.
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