Vacuum toilets, sewage treatment plant+ vacuum piping system
Vacuum generating unit + piping system for transport of sewage + toilets, urinals, grey water interface units
Vacuum generating unit + vacuum piping system + STP
True
False
True
False
10-20 litres
30-40 litres
60-80 litres
The transport pockets of the piping system
The grey water interface units
The sewage treatment plan (STP)
A collecting tank
The vacuum level in the piping system will increase
The vacuum level in the piping system will decrease and the vacuum generating unit will start to re-build the vacuum level
The vacuum level will remain unchanged in a correctly installed piping system
Alle the way from the toilet to the STP or collecting tank
20-30 meters
5 to 15 meters
At the highest point of the vacuum system
At the lowest point
At the same height as the toilets in the system
Sewage is flowing from the toilet to the vacuum generating unit
Sewage is flowing form the vacuum generating unit to the collecting tank
Sewage from upper pipes flowing back to the rising pipe connected to the toilet
The size of the ship and the risk of varying trim and list of the ship
The speed of the ship
The waters in which the ship is designed to travel
The outside temperature
To make the dimension of the pipes as big as possible
To install bigger VacuumaratorTM pumps
To install a vacuum accumulating tank
A point in a vacuum piping system where access to the piping is gained for cleaning
A point where the pipining system is at its highest point
A point where the pipining system is at its lowest point
To prevent backflow to the toilets
To make cleaning of the piping system possible
To re-form slugs and thus secure the speed of the transport of sewage in the piping