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Investigate the Transient Behaviour of Bolted Flanges during a Thermal Bow Event in Cryogenic Service
The objective of this project will be to investigate, by simulation, the transient behaviour of bolted flange connections (BFC) when exposed to thermal bow events such as those experienced on Liquefied Natural Gas (LNG) facilities (i.e. particularly when LNG partially fills a flare line across a BFC or during start-up operations whilst filling a cryogenic vessel and the liquid level transitions over a BFC nozzle).
Woodside Energy Ltd
5pm, Sunday 14 January 2018
Concentrations of fibrous materials are currently evaluated using an established Safe Work Australia Method that uses a phase contrast microscopy. This is a visual technique that allows the analyst to determine the quantity of fibres present on based on their aspect ratio (in micrometers). The fibre count can be used to make assumptions about fibre concentrations in soil and air.
5pm, Thursday 21 December 2017
Scope of Work
• Collect data from various sources on failure rates and reasons in last ten years.
• Compare previous project data with findings.
• Assess the effect of maintenance strategies on the reliability of the assets.
• Assess the overflow location for all pump stations and determine the sites’ regulator focus
• Develop an energy efficiency measure that covers pump stations for two categories, large pump stations and small pump stations. A measure for large pump stations already exists and is to be reviewed.
• Develop a performance measure (LOS) for wastewater pump stations
• Develop a general FMEA for a list of agreed critical pump station components
• Improve understanding of the impact of storm events on pump stations and develop rules regarding design tolerance to infiltration.
CLOSED - 5pm, Friday 3 November 2017
Ragging and obstruction of wastewater pumps and pump impellors is a significant performance issue across Water Corporation’s wastewater pump stations, incurring a substantial corrective maintenance cost to the organisation, and driving a recognised overflow risk. Root cause investigations thus far have focussed on Make and Model of sewer pumps and impellors, and is yet to be completed. Other potential root causes are not well-understood and it is believed that there is a body of work that can be done to better understand all major factors associated with the ragging and obstruction of sewer pumps and impellors. A more robust understanding of these root causes would then drive improvements to maintenance and operation strategies for sewer pumps and pump stations, driving down corrective maintenance costs and overflow risks.