Northern Southern and Marlin Coast Diffuser Replacement

Overview Cairns Regional Council is seeking suitably qualified and experienced contractors to complete the works associated with the diffuser replacement programme for Contract Number 3111, across three wastewater treatment plants (WWTPs) located in the Northern, Southern, and Marlin Coast areas of Cairns Regional Council, over a period of two financial years being 27/28 and 28/29. About The fine bubble membrane disc diffusers were initially installed for Council as part of the Cleaner Seas Project in 2010. The diffusers were subsequently replaced at each WWTP site as follows: Marlin Coast WWTP in 2018, Northern WWTP in 2018, and Southern WWTP in 2017. The existing fine bubble membrane disc diffusers are nine (9) inch diameter SANITAIRE® Fine Bubble SSII membrane disc diffusers. As part of its proactive maintenance program, the fine bubble membrane disc diffusers have been identified for replacement as they approach the end of their asset life. Scope The scope includes: Removal and replacement of the fine bubble membrane disc diffusers at the Northern, Southern, and Marlin Coast WWTPs Maintaining operation of the aeration tanks forming part of the bioreactor process at each WWTP throughout the removal and replacement works Lifting of grids from the aeration tanks using a crane, with crane selection at the discretion of the Contractor (previously a crane with a capacity of approximately 150 tonnes was used) Contractor Requirements Suitably qualified and experienced in completing works of this nature Contract Terms and Conditions Contract based on AS4000 conditions with separable portions Separable Portion 1 (Northern) and Separable Portion 2 (Southern) are to be completed between July 2027 and November 2027 Separable Portion 3 (Marlin Coast) is to be completed between April 2028 and June 2028 Site works are to be complete by 30 June 2029 Tenders are to remain valid for a period of 120 days from the Closing Time Instructions to Tenderers Tender enquiries, questions, or clarifications should be directed via the online forum. Cairns Regional Council officers are unable to respond to verbal enquiries in relation to the tender. The forum will close five days prior to the closing time and date, and all questions, information requests, and clarifications should be posted prior to this time. Completed responses must be lodged by uploading the submission to Tenderlink, using the response forms within the tender documentation. It is strongly recommended that tenderers begin uploading their submission files at least two hours before the tender closing time. Late, verbal, or emailed tenders may not be accepted and will be subject to Council's sole discretion. Submissions will not be opened publicly, and the lowest or any tender may not necessarily be accepted. Council reserves the right to change the specifications prior to making a decision on the submissions received in response to this invitation, and may invite all Respondents to change their submission to take into account any change in the tender specifications.