Controlled Emission Toilets


Modern trains are now equipped with toilet retention tanks that can be safely and hygienically emptied each night when they return to the depot via a Controlled Emission Toilet (CET) system.

Emeg has developed a CET system over many years to provide equipment and controls that enable an automated CET procedure. The automated CET system is not only easy to use but also straightforward to operate and provides operators with a clean working environment.

With the CET hoses connected to the train the operators can simply press the cycle start buttons in any order and the system will perform the CET cycle including flushing at each unit in the same sequence that the buttons were pressed.

CET System


Emeg’s most frequently installed CET system is a fixed system that comprises of a CET plantroom, spilt tanking and flushing water tank and fixed CET units that are either located to service specific points on the rolling stock or located to provide universal coverage for the servicing apron.

The CET plantroom typically houses the CET double pumping skid, the main control panel, the pump control panel and the water booster sets.

Mobile systems and standalone systems are also available.

CET Case Studies

Blackpool Depot

Blackpool Depot   Key Project Features CWM Tanking Water Automatic Sanding System Controlled Emission Toilets (CET) Automatic Sanding System CWM installation with water recycling system   Description of Project The Northern Hub programme was developed to increase...

Blackburn Depot

Blackburn Depot Key Project Features CWM CET & Tanking Water System Fuel, Oil & Coolant System Adblue System Apron Hot & Cold Water Points Lighting LV Distribution Telecoms Accommodation & Plantroom Fire Alarm Access Control Description of Project The Northern Hub...

Fuelling Facility – Croft Street, Preston Depot

The Northern Hub programme was developed to increase capacity, line speed and connectivity throughout the North West of England. Croft Street Depot, Preston is one of the f our Network Rail owned depots to be upgraded and have fuelling system installed