Section 3 Protection against Flooding

301. Bilge water level detection

1. High bilge water level in periodically unattended machinery spaces below the assigned load line is to activate an audible and visual alarm at the locations determined in accordance with 502. 1.

2. Bilge wells are to be provided in periodically unattended machinery spaces and are to be large enough to accommodate easily the normal drainage during unattended periods. They are to be lo-

cated and monitored in such a way that the accumulation of liquids is detected

normal angles of inclination.

at preset levels, at

3. Where the bilge pumps are capable of being started automatically, alarm devices are to be provided to indicate at the locations determined in accordance with 502. 1 either one of the following con- ditions:

(1) When the influx of liquid is greater than the pump capacity.

(2) When the pump is operating more frequently than would be normally expected.

In these cases, smaller bilge wells to cover a reasonable period of time may be permitted. Where automatically controlled bilge pumps are provided, special attention should be given to oil pollution prevention requirements.