20 Fire on Board – Part I.(PPT-98).ppt

Fire Hydrants – three components Give a brief description of the various operating principles of heat detectors. Label Fig.20.3. and describe the operating principle of the type of detector represented. IV . Fill in the blanks in the following sentences in order to for VERB + PREPOSITION / ADVERBAL PARTICLE collocations. ?Choose among : in, of, off, out, under, with, on ? When World War II broke ___________ my grandfather was sailing on a merchant vessel. Flooding in the engine room is being brought ________ control. Wars have always resulted ___________ heavy casualties. He doesn’t want to associate himself _____________ what has been said about the engine condition. If a fire should break out on a ship how best can it be dealt ______________ ? By making use ______________ fire-fighting appliances. This chemical gives ______________ toxic vapours. Auxiliary boilers may be operated _________ the main engine exhaust gases. FIRE FIGHTING ON BOARD SHIP Part IV. Fire control Fire control Two basically different types of equipment are available on board ship for the control of fires. These are small portable extinguishers and large fixed installations. Fire buckets, for many years recogised equipment, have been replaced on all but the smallest vessels with more effective portable extinguishers- expelling water, foam, C0¨2, Halon and dry powder. Portable extinguishers are for small fires which, by prompt on-the-spot action, can be readily extinguished or contained before they escalate. However, altough they may be highly effective, their capacity is limited. The fixed installation is used when the fire cannot be fought and restrained by portable equipment or there is perhaps a greater danger if adjacent areas were to be set on fire. A variety of different fixed fire installation exist, some of which are specially designed for certain types of ship. A sea water supply system to fire hydrants is fitted to every ship. Several pump