Fire sprinkler systems are essential for workplace safety, as there are hundreds of fire-related incidents in Australia every year. Fire tank liners must be able to store water for long periods of time without being used, so that they are ready when a fire does occur.
Many commercial properties in Greater Sydney and NSW use OSD (on-site stormwater detention) tanks to manage rainwater runoff and reduce flood risk.
These tanks collect and slowly release stormwater, preventing drainage system overloads and helping protect communities from flooding.
Australian Fire Tanks by Raven Tanks Australia inspects OSD tanks across various commercial and industrial sites, offering flexible, site-specific solutions.
Ask us about warranty coverage for stormwater detention tank inspections and maintenance.
Most OSD tank maintenance is done once or twice a year, and after major storms. However, some parts of the OSD system need to be inspected more often, such as every quarter or every five years, depending on what they are used for.
It is very important to have your OSD tank inspected regularly and thoroughly. If you don’t, the overflow system could malfunction and cause flooding, property damage, or even death.
Blockages and contamination can also happen if you don’t maintain your OSD tank properly. That’s why it’s important to have your tank inspected frequently and on time.
We recommend having your OSD tank cleaned before a period of low rainfall. This is because it is easier and less expensive to remove leaves and other organic debris when the tank is not full.
Commercial detention tanks need to be inspected regularly by a professional, even if they are small or simple. This is because it can be very expensive to replace parts or the whole tank, and if the tank fails it can cause a lot of damage.
A poorly maintained OSD tank can cause a lot of damage if it fails and causes flooding. This damage can be very expensive.
Get your OSD tank inspected regularly by Australian Fire Tanks by Raven Tanks Australia to make sure it is working properly and to prevent problems before they happen.
OSD tank owners are legally required to make sure their tank can store stormwater runoff from a 100-year ARI event. Regular inspections by a qualified professional can help you meet this requirement.
A well-maintained OSD should:
OSD tank inspections are high-risk and should only be carried out by licensed professionals with the proper training and equipment.
Neglected tanks may contain hazardous materials like decaying pests or harmful bacteria, which can release toxic gases not detectable without specialised tools.
Never attempt to access or open an OSD tank yourself—professional inspections always require proper gear and a trained safety observer.
If you’re experiencing issues with your OSD tank, contact Australian Fire Tanks by Raven Tanks Australia.
Commercial stormwater detention tanks can attract mosquitoes. They must be designed to drain quickly and completely to prevent mosquito breeding.
Regular inspections and maintenance of detention tanks help to prevent mosquito breeding. A professional maintenance and operations plan from Australian Fire Tanks by Raven Tanks Australia can help you eliminate mosquito breeding.
Have questions? Here are answers to some of the most common inquiries to help you better understand our services.
An OSD tank temporarily stores stormwater and slowly releases it to prevent flooding. Regular inspections ensure the tank remains clear of debris, structurally sound, and compliant with council regulations.
Most councils recommend inspecting OSD tanks annually or after major rainfall events. More frequent checks may be needed for high-risk or heavily used sites.
Inspections assess structural condition, inlet/outlet flow, sediment buildup, access safety, and compliance with local stormwater management guidelines.
If your tank fails, you may be required to clear blockages, repair structural issues, or upgrade components to meet regulations. Non-compliance can lead to council fines or drainage failures during storms.
