4.5 Optional devices4.5.1 Partition

4.5 Optional devices
4.5.1 Partitions
When installed, partitions shall:
a) shall be structurally sound and shall not diminish the integrity of the tank;
b) allow fluid to transfer while reducing or preventing the transfer of any solid matter;
c) have the top of the partition wall at least 150 mm above the top of the water level; and
d) be able to withstand pump-out during desludging (see AnnexCfor verification test).
4.5.2 Gas baffle
When installed, gas baffles shall:
a) be designed and constructed to prevent the carryover of gas borne solids through the
outlet; and
b) be fitted in accordance with the manufacturer’s instructions.
4.5.3 Filter media
When the septic tanks been designed to be fitted with filter media, the filter media shall:
a) be fitted with the septic tank during delivery;
b) be contained in a chamber;
c) be easily accessible and removable for maintenance purposes; and
d) be made of non-gradable, non-corrodible and of inert materials which may not warp
over time.