Why this Oxford Falls escape burn should spark bushfire alarm – MASHAHER

The escape of the planned burn near Oxford Falls in Sydney’s northern beaches last Saturday threatened lives and property. It provoked a large and costly response, spreading from a small intended area to almost 150 hectares. With uncanny echoes of some of the backburning problems during our Black Summer – including in the Blue Mountains – the incident raises questions for the fire agencies, the community and the government.

Let’s be clear: lighting a new bushfire is always a risk, whether it’s done outside the fire season to reduce fuels or a backburn to contain a wildfire. Some burns do escape, to enlarge both the fire and the dangers. This risk is managed through standards, training, planning and procedures – more so with hazard reductions, which provide more time and choice compared to high-pressure wildfire situations. Most burn planning and approval is done by the paid staff of fire agencies.

Off-season planned burns close to residential areas are complex and risky, so they are carefully planned within a specific weather prescription that will achieve enough burning with a low risk of escape. This is especially important when a burn is close to an aged care or similar facility.

So what happened last Saturday? There has been no detailed explanation. Statements about blowing embers, weather and high fuel levels don’t cut it and just raise more questions. All these factors are part of the planning. It’s essential to dig deeper. Pre-emptive explanations also endanger the more considered investigation which now needs to happen. It must not look for blame but for learnings.

Fire is a tricky business, and unintended outcomes are usually the result of multiple factors. The pressure to achieve burning programs and to “get the job done” on the day is understandable. Climate change and the availability of volunteers are squeezing “windows” to do burns safely. Spring is a risky season, adding to other risks.

Burns can go wrong in planning, resourcing, approval on the day and how they are implemented. Was the northern beaches burn within the prescribed and forecast weather conditions? Was it lit to the appropriate pattern and speed? Were adopted burning guidelines followed? What did witnesses see, and exactly how did it cross the line? What contingency planning was done in the event of escape? So many details are crucial, but the key overall question is: could the breakout have been avoided, and if so, how?

Let’s not pretend that the “expanded” burn was a good outcome. Some local brigades and residents may be relieved that there is reduced risk in the area for a few summers, but breakouts are dangerous, and this one could have turned even more disastrous. The whole bush block is now scorched, making future fire management more difficult.

When things go wrong the most important response is analysis, so that future problems can be minimised. Volunteers need to be supported with the best evidence and learnings for future burns, within a rigorous risk management system. Most veteran firefighters would agree that something can be learnt from any fire.