October is wellness & safety month. MEL places the highest importance on it’s team members and contractor’s safety and well being. This month MEL is busy reviewing all of our policies and procedures and promoting the importance of health and safety throughout all aspects of our business.
MEL was a proud sponsor for the National Woodskills Competition 2018 held in Kawerau last month. The National Woodskills Competition, New Zealand’s premier festival celebrating all things wood, runs alongside WoodFest. This year there were over 15 categories for the artistic wood workers to consider. There was a change to the college-age category, with woodcrafting of any sort being encouraged by year 9-13 students. In previous years there were good levels of junior entrants and even more were seen this year.
Mainstream Engineering Ltd (MEL) are full members of the Engineering NZ and Maintenance Engineering Society of NZ. Each year MEL attends the annual conference which has a large range of experts and hands-on engineers coming together to share their maintenance engineering journeys and latest industry insights.
The conference includes three international keynote speakers, 25 speakers from local & abroad and great networking opportunities – and it is all packed into two days. This is an opportunity to learn from the experts and take that knowledge away to improve plant and maintenance performance.
This year the Conference will be held at the Rotorua Energy Events Centre on the 13-14-15 November 2018.
MEL completed a Computational Fluid Dynamics (CFD) study to determine the dispersion of gas discharged from a 450mm diameter by 10m high stack. The stack discharge results from a rapid release of gas from a pressurised storage tank.
A transient computational fluid flow time analysis was performed as the initial discharge rate was significant but dropped progressively as the tank pressure reduced.
Various scenarios were analysed investigating the effects of different discharge rates along with ambient environmental temperatures, wind velocity and wind direction conditions.
The results of the study show gas concentration levels as it discharges from the stack and disperses into the environment over time. The results were used to investigate the environmental effects of a gas discharge.
The gas concentrations shown in the animations are visualised by iso-surfaces representing three gas concentration ranges of interest.
A short animation also shows the results over time.