1 The flue gas system, for incinerators where
the flue gas is led through a heat recovery device, should be designed
so that the incinerator can continue operation with the economizer
coils dry. This may be accomplished with bypass dampers if needed.
2 The incinerator unit should be equipped with
a visual and an audible alarm in case of loss of feed-water.
3 The gas-side of the heat recovery device should
have equipment for proper cleaning. Sufficient access should be provided
for adequate inspection of external heating surfaces.