This quarter has had a range of activities, with providing input to the SKAO’s cost control programme being one of the more important ones, as the organisation worked to examine a range of options to bring the project back on budget.
Some of the fundamental Infrastructure Australia (INAU) activities undertaken in the recent term have included finalising the draft Power design report and the draft INAU EMC/EMI Control Plan. For the Power design report some of the main challenges were the power system analysis for the long spiral arms and the distribution options within the Low core, due to the relatively low loads compared to the long cables.
The output of the Building workshop was used to progress the design of the CPF. In particular, options around layout and RFI shielding alternatives were examined in detail, with a focus on cost reduction – achieving the most functional building that met the requirements for the least cost. An important decision path here is the tradeoff between module size (larger means less assembly on site and more pre-installation of components off-site) and transport cost and complexity. An initial Buildings design report is presently under INAU review.
The completion of a desk-top flood study is another important milestone in the ground preparation assessment process. This combined with the high resolution contour data means we can address the detailed location of buildings and infrastructure around the site. As part of this we will examine the specific locations of Low antenna clusters and determine whether small location changes may be needed. This will be done in conjunction with the heritage surveys.
INAU continued to work with CSIRO, DIIS and the Wajarri Yamatji to progress the heritage protocol. This is required to allow early works to be performed (such as geotechnical testing, heritage surveys etc) and is nearing completion.
A significant body of work was done around integrating the Level 1 Rev 10 requirements into our system engineering database (ComplyPro, which uses the DOORS database), and further decomposition down through L2 and L3, along with issuing the compliance matrix. We have also transitioned to ProjectWise, which has been a major change for our document management and retrieval group.
Significant progress has also been made in finalising various ICDs, with a number of TBCs and TBDs addressed. In particular LFAA, SaDT, CSP and TM ICDs have all moved forward, and all documents are now ready for signing.
A site visit by the INAU team to Boolardy was also arranged to assist in the ground preparation assessments at the SKA1-low core. A key technical note was documented and issued detailing the viability for near future use.
CSIRO and Aurecon were able to convene at the June SKA Engineering meeting in Rotterdam, which presented an important opportunity to discuss interfacing and exchange knowledge with other Consortia. Opportunities to engage with the SKAO to discuss the status of the wider project was also invaluable including decisions needing to be progressed and management strategies.
INAU and INSA meet in Rotterdam to discuss the ins-and-outs of Infrastructure. Pictured here (L-R) are Craig Smith (INSA), Gideon Wiid (INSA) , Martin Austin (SKAO), Angelo Syce (INSA), James Massoud (INAU), Mark Davie (INAU), Tracy Cheetham (INSA), Rebecca Wheadon (INAU), Ant Schinckel (INAU), Sarah Pearce (CSIRO), Carol Wilson (INAU) and Shandip Abeywickrema (INAU)
Participation in the Good Ideas Group Meeting with Infrastructure South Africa (INSA) in Rotterdam also presented the chance to exchange ideas over common technical interests such as batteries, RFI shielding, new developments in PV design as well as approaches to Health & Safety in the Infrastructure domain.
Other core activities undertaken in the recent term included continual review of the ECPs in accordance with the cost reduction programme as well as the issue of the cost submission for the July 2017 Board Meeting.
With the July Board decision and imminent release of Rev 11 of the Level 1 requirements along with ICD completion, INAU will be transitioning into completing the detailed design phase of the work leading towards our CDR.