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Vessel Internal Piping and Structures for Coal Seam Gas

Vessel Internal Piping and Structures for Coal Seam Gas

Project Summary

The Australia Pacific LNG Project is a coal seam gas (CSG) to liquefied natural gas (LNG) project delivering a cleaner, greener sustainable energy source.
Australia Pacific LNG is the largest producer of CSG in Australia, supplying gas to power stations to produce lower emissions electricity. The Project will see an increase in domestic gas production to further supply gas-fired power stations, major industrial customers and residents throughout Queensland, Australia. It'll be a source of major investment through to 2020, creating around 10,000 jobs throughout the life of the Project, increasing local skills and boosting regional economies. CSG on the other hand, is not a new industry for Australia. The Project joint venture partners, has been working in regional Queensland for nearly 30 years and in the field of CSG for close to 20 years.

Want to know more about the Project? Explore the Australia Pacific LNG Project fact sheet.


Challenge
Bilfinger Water Technologies' Australia was contacted to assist on this project designing of vessel internal piping and structures for the Brine Softening Ion Exchange Units at Condabri Central and Reedy Creek water treatment facilities. The function of the BS-IX system is to soften RO reject to minimise scaling potential in the downstream thermal desalination process. The design life of equipment excluding consumables shall be 25 years and the specification and technical requirements for the design were very tight, making it challenging for the Bilfinger Water Technologies team.

Scope of Supply
The product and service provided includes the product design and documentation; fabrication and factory testing for (10) header and lateral systems; product supply against a very tight project timeline. The (10) header and lateral systems inside of the vessels were designed using materials of pressure rated plastic UPVC and Hastelloy C to be used in contact with dilute hydrochloric acid.

Bilfinger Water Technologies Solution
Product testing was only one of the many critical project criteria, a fail in this area would have jeopardised the project timeline commitments. A uniform flow distribution must be achieved over the entire filter bed during backwash and normal service operation. No greater than +/- 5% of flow variation was permitted. CFD model on our design gave us the confidence that our product design can achieve this.

Flow Distribution Efficiency Testing of the Distributor/ Collector had to be proved and the Bilfinger Water Technologies operations team had never conducted a test of this nature on this particular product before; however the support from our key technical experts at Bilfinger Water Technologies' New Brighton, USA working closely with our Brisbane based team, achieved a global success for our Bilfinger Water Technologies Industrial team.

The product could not be tested under actual working conditions, or within an actual working environment, but rather within an environment that allows analyses and observation of performance.

Test Results and Observations:
Flow meters and coloured dye was used to record the flow and distribution of the system. The results of the tests conducted indicate that the system is expected to produce even collection and rejuvenation of the bed. The layout of the laterals and distribution of the production holes have indicated even flow to the service area of each lateral. The distribution of air holes has displayed evidence of uniform agitation to be expected through the bed. The results of the dye test indicate an even and swift saturation of the bed is to be expected.

This project was extremely beneficial to the team, we now have the experience and skills to conduct this type of testing qualification on future projects. The effective and transparent collaboration of our sales and operation teams from Australia and USA over more than 12 months has made this a successful global project for Bilfinger Water Technologies.