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Kembla Watertech Pty Ltd is committed to minimising environmental impacts arising from company activities. To this end, it is Kembla’s policy to:
§ Identify, assess and control hazards/risks associated with activities, products and services employed by Kembla Watertech Pty Ltd that may impact on the environment
§ Adhere to all statutory, regulatory, legal and other requirements relevant to the environmental aspects of Kembla’s business practices
§ Maintain our commitment to the reduction of pollution, to minimise waste and to encourage recycling practices both on and off site.
§ Set environmental management objectives and targets and ensure they are reviewed annually as a minimum.
§ To ensure environmental management programs are implemented to ensure we meet our objectives and targets.
§ To maintain our commitment to continual improvement in all our activities.
§ Educate and train all employees in understanding of our legal and statutory obligations in environmental matters, and so that each person has a responsibility to the environment and to work in such a way that will not harm the environment.
§ To ensure this policy, our objectives and our environmental performance are communicated to all internal stakeholders and to make relevant information on environmental policy and performance available to external stakeholders and the public.
§ Continue to select, develop & implement products and processes based on their environmental stewardship
Senior Management shall ensure that appropriate resources are available to enable the company to meet the stated objectives. Kembla Watertech also recognises the need to work closely with our customers and suppliers to protect the environment, both during and after construction on sites.
Chris Meredith
Managing Director
Description of Rehabilitation Activities
Kembla Watertech’s Rehabilitation Program uses trenchless technology and is generally less disruptive to the environment than traditional rehabilitation programs as excavation is generally not required to complete the work.
Repairs are carried out inside the pipe by robotic or manual trenchless technologies. Access to the repair location is via existing access chambers, traps or inspection openings. Since there is no need to relay the whole pipe, the overall cost is generally less than the pipe replacement option.
Kembla Watertech’s Rehabilitation Program involves the cleaning, inspection, investigation and rehabilitation of the sewer pipelines, predominantly using trenchless technology including water cleaning, root cutting, closed circuit television (CCTV), sewer lining and grouting.
The use of trenchless technology represents an effective method to rehabilitate sewers, using modern technology to produce an ecologically sustainable rehabilitation program. The majority of rehabilitation activities are undertaken within the sewer pipeline using robotic devices, minimising disturbance to the surrounding environment. The pipelines are rehabilitated in sections to allow the majority of the sewerage system to remain online. As such it may be necessary to divert sewage around a particular section of the sewer to a downstream access chambers for certain activities.
Access to the sewer pipelines is gained via the network of existing access chambers, which are located at various locations on the sewerage system within roadways and private residential properties. The lining method is selected to best meet the condition and diameter of the existing pipeline and can only be determined following the condition assessment of the pipeline. Each lining technique will be undertaken internal to the pipeline and will result in similar minor environmental impacts and issues.
Minor excavation may be required at isolated sites to expose dead ends or carry out minor structural repairs to the pipeline. Excavation will be carried out within the existing asset trench with limited associated environmental impacts.
Kembla Watertech’s Rehabilitation activities will include:
§ locating all the required access chambers, boundary traps, inspection openings, pipes and dead ends;
§ initial CCTV inspection of the line to assess any major damage and determine the exact location of each connection;
§ high pressure water jetting is used to clean the pipes and remove the majority of roots from within the pipelines prior to removal with a root cutting blade;
§ roots are cut out with a portable circular root cutting blade. No herbicide or root foaming will be used to remove roots from within the pipelines;
§ where rehabilitation is necessary, the flow is controlled and / or diverted if required;
§ the appropriate lining technique and lining thickness is formulated and the liner is generally pulled into place from one access chamber to the next;
§ grout annular space at lining ends to seal sources of infiltration / exfiltration. The “cut-outs” required for cross connections are made using a remote control cutter from within the lined pipe; and
§ undertake hydraulic tests of the pipe liner.
§ post CCTV inspection to assess the quality and effectiveness of the product installed
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