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RISK ASSESSMENT Cont...
As part of the Product Certification process, end product tests were carried out on an installation in a
temperate climate (monthly average temperature <12°C for 3 months and relative humidity ~80% for 2
months) under ‘worst case’ (high use, low maintenance) conditions and found end product results
conform with AS/NZS1546.2:2008 standards.
There is a high level of confidence that Rota-Loo will deliver safe end product quality in all situations,
provided some operator / user care is taken and instructions are followed.
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RISK IN UNUSUAL SITUATIONS
The following are “unusual situations” listed in AS/NZS 1546.2:2008 Appendix J that may be considered
to pose a risk to the safe operation of a WCT, together with notes on how these risks are or may be
mitigated.
Appendix J, J3, d, e and g are not relevant to the Rota-Loo design
.
Transfer of Owner / occupier
If on transfer of ownership the new owner / occupier does not receive information about how to operate
the Rota-Loo they may not attend to it’s operation properly.
Rota-Loo provide with the kit a Wall Poster to be attached near the toilet to inform users of the basic
operational needs of the system. Manufacturer contact details are also provided on the Rota-Loo access
door and serial number plate and the Operations Manual is readily available to anyone who requests it.
Should the new operator / user not learn of the need to attend to the Rota-Loo before a bin overfills,
they will need to address the issue as per “Carousel not turned” below and as addressed in the
Troubleshooting Guide on Page 15.
No Bulking Material is Fed in
While the addition of bulking material is recommended it is not essential for effective composting.
The use of toilet paper and the design to drain the compost pile of moisture is sufficient to ensure
correct composting conditions. The C/N balance may result in less efficient composting, but the design
composting time to sufficient to cope with this - test site for Product Certification verified this.
The Carousel/Turntable is not turned
If the Turntable (Carousel) is not rotated the waste bin will over-fill, which is not good.
The risk to health and safety in this event is mitigated by:
•
The top of the bin is very close to the waste chute, so overflow of waste to the turntable and ‘tank’
should be minimal before being noticed and rectified.
•
The waste chute is long enough so that even if the waste chute starts to fill, the level of waste will be
greater than the minimum required by the Standard.
• The bin is contained within the Rota-Loo so all waste will be contained within the Rota-Loo system.
Should the bin overflow, the Rota-Loo will need to be cleaned out carefully. The overflow bin will need
to be removed and excess waste can be transferred to the next bin. Any overflowed waste solids can
be cleaned out be flushing with water and pumping out the Rota-Loo base (block-off the excess liquid
outlet). It is recommended that this be done by a contracted septic clean out specialist. (This eventuality is
also addressed in the Troubleshooting Guide on Page 15).
The Compost gets too hot
The Rota-Loo design has continuous air ventilation so excess generated heat will be removed preventing
the compost pile retaining excess heat. Should the compost pile get hot, the chimney effect of the
ventilation system will increase air flow and remove more heat.
