D semester

The bilge line arrangement is an important safety system that is 1. by law. The purpose of the bilge line arrangement is to pump 2. water out of the ship. Rules made up by governments and 3. Societies have to 4. with international SOLAS RULES. SOLAS states the bilge line arrangement, the ballast line arrangement and the fire fighting arrangement must be three 5. systems, each being capable of taking over the work of the other if necessary. Small amounts of water can 6. in the ship as a result of condensation, leakages of pipes, washing or rain. Condensation can 7. when warm air hits a cold surface. In the most 8. circumstances the water flows down the sides into the bilge well and can be pumped overboard. Bilge pumps keep the engine room dry. There are normally three systems. First, a small pump 9. of dealing with the normal, small, daily quantities. This small pump pumps the dirty water into a bilge holding tank. From the tank, the water is pumped by another small pump through an oil water separator overboard, only when it is 10. clean. If not, it goes to another storage tank, the sludge tank. A second bigger pump, can pump the bilge water from the engine room straight overboard, but this is only allowed in emergencies. A third possibility is to use the direct suction of the main cooling water pumps, which has huge capacity for big leaks in emergencies.