Page
RISK ASSESSMENT - OVERVIEW
The Australian Standard for Waterless Composting Toilets (AS/NZS1546.2:2008) requires that a Risk
Management Plan be provided to inform Rota-Loo Operators and Users how to cope with unusual or
emergency situations.
Most of these issues are dealt with in the Operations Manual. This Risk Management Plan contains
additional information and refers to the Operations Manual to demonstrate that a Risk Management
Analysis has been carried out and to provide additional support to operators and users if required.
Design and Operation of Rota-Loo
Inherent in the design of the Rota-Loo are factors that mitigate many of the risks, however it is essential
to understand that some care and maintenance is required. The design of the Rota-Loo intends to ensure
effective composting occurs in most environments with little operator effort (see Page 2 - The Composting
Process for greater understanding), however some occurrences may render the Rota-Loo ineffective.
PLEASE READ THIS OPERATION MANUAL CAREFULLY
IT IS IMPORTANT THAT YOU MAINTAIN THE ROTA-LOO PROPERLY
17
RISK ASSESSMENT
This assessment is based on the criteria set out in AS/NZS 1546.2:2008 Appendix J for WCT deemed to be
acceptable risk.
Inspections by Authorities
The Rota-Loo is a fully contained WCT system that has no need for inspection or maintenance by any
outside agent or authority for safe operation. The design cycle time for waste composting is 12 months so
should an authority require regular inspection, 12 monthly or greater is sufficient.
The Operations Manual contains sufficient information for the operator / user to carry out all servicing and
maintenance tasks and includes a Trouble-Shooting guide to address most unusual situations. The
manufacturers contact details are included on the serial number plate for contact in unknown situations.
Storage of, and access to Uncomposted Material
Being fully self contained, all uncomposted waste is retained inside the Rota-Loo in the controlled aeration
and drainage system until fully composted. All material is held inside the bin / bucket into which it is
deposited and moved only by rotating the turntable, which does not require operator contact with the
waste. The Operations Manual includes instruction to wear gloves when rotating to ensure random
contact with skin is not possible.
Service and maintenance access is by a door on the Rota-Loo. The door is securely fitted with catches
and note is made in the Installation Manual that the installer should consider security of access against
unauthorised persons (e.g., small children) in the placement of and access to the Rota-Loo.
Waste is only removed from the Rota-Loo when fully composted and is removed by removing the entire
bin and emptying (instruction to bury as per Regulatory requirements) - with instruction to wear gloves,
even the composted material does not come into contact with persons.
An option noted in the Operation Manual is for the possibility in very high use situations for
additional bins to be purchased to extend the composting time outside the Rota-Loo. In these cases
the first part of the composting (approx 6 months) will occur in the Rota-Loo controlled environment.
Instruction in the Operations Manual includes the need to store extra bins outside the Rota-Loo for
additional composting time in a flat, safe place.
End Product Quality
Rota-Loos have been operating in diverse climates from cold and alpine to tropical for many years
achieving effective composting results and safe end product quality. Records of testing date back to 1975
showing end product quality conforming to AS/NZS 1546.2:2008 standards.
