Types of detector.

Detector type	Type	Tested by	Fitted in
Smoke detector	Photocell or light scattering types		at stairways, corridor, escape route within Accommodation Space
Heat detector	Bi-metal strip		Fitted in boiler room, laundry, Control Room, Galley
Flame detector	Ultra-Violet or infrared.		Fitted near fuel handling equipment
Combustible detector			Fitted in galley, ER fwd bulkhead adjacent to p/p room under floor plate