轮机英语三管轮试题 油水分离器.doc

轮机英语1591. Oil water separators are used to ensure that ships dont discharge oil whenpumping out _.A. ballast water B. boiler water C. bilge water D. sewage water1592. The bilge main is arranged to drain any watertight compartment _ballast, oil or Water tanks and to discharge the contents overboard.A. rather than B. other than C. in addition that D. except for1593. Emulsification of oil will occur when mixed with _.A. air B. black oil C. water D. ice cream1594. In an oily water separator the oil will travel _ to the oil collecting spaces.A. upwards B. downwards C. outwards D. forwards1595. When started, a complete oily water separating unit is first filled _. Theoily water mixture is then pumped through the inlet pipe into the coarse separatingcompartment.A. with dirty water B. with clean water C. by oily water D. by mixed water1596. A high rate of separation between oil and water is favored by _.A. large size of oil globule B. low temperature C. high viscosity D. high flow rate1597. If a bilge pump failed to build up discharge pressure, you should check for _.A. excessive water in the bilges B. a clogged suction strainer C. oil in the bilges D. All of the above1598. The emergency bilge suction or bilge injection valve is used to prevent _ of the ship.A. proceeding B. overloading C. collision D. flooding1599. All bilge suctions must be fitted with suitable _, which in the machineryspace would be mud boxes positioned at floor plate level for easy access.A. strangers B. relief valves C. emergency valves D. strainers1600. Coalescence is the breakdown of surface tension between oil droplets in anoil/water mixture, which causes them to join and _ in size.A. expand B. extract C. increase D. decrease1601. In a complete oil/water separator, more oil will separate out onto theunderside of these plates and travel outwards until it is flee to rise into the oilcollecting space. Whats the meaning of it in the sentence above?A. a separator B. oil C. water D. an oil collecting space1602. Oil water separators are used to ensure that ships dont discharge oil when_ bilge water.A. to pump off B. being pumped C. pumping out D. it pumping out1603. _ is the breakdown of surface tension between oil droplets in an oilwater mixture which causes them to join and increase in size.A. Wear B. Contaminating C. Coalescence D. Coarse separating1604. Here some oil in the oily water separator, as a result of its lower _, willseparate and rise into the oil collection space.A. temperature B. viscosity C. density D. velocity1605. All bilge suction must be fitted with suitable _, which in the machineryspace would be mud boxes positioned at floor-plate level for easy access.A. strainers B. valves C. elements D. separators1606. The oil _ in the discharging water from oil water separator exceeds 15PPM without alarm, because the coil was burnt out.A. filter B. hole C. pollution D. content1607. The remaining oil/water mixture now flows down into the fine separatingcompartment and moves slowly between the _ in the Turbulo separator.A. catch plates B. swash plates C. cover plates D. bedplates1608. An oil water monitor is required in order to measure _.A. the oil content in water B. the water content in fuel oilC. the water level in bilge well D. the oil level in bilge well1609. The bilge main is arranged to drain any watertight compartment _ballast, oil or water tanks and to discharge the contents overboard.A. more than B. other than C. in addition to D. except for1610. Oil water separators are used to ensure that ships dont discharge oil whenpumping out _.A. ballast water B. boiler water C. bilge water D. sewage water1611. Where an excessive level of contamination is detected an alarm is soundedand diverting valves are operated. The discharging liquid is then passed to _.A. overboard B. a bilge well C. a slop tank D. a hot well1612. If a bilge pump failed to build up discharge pressure, you should check for _.A. excessive water in the bilges B. a clogged suction strainerC. oil in the bilges D. a closed skin valve1613. The emergency bilge suction valve is typically used _.A. to inject cleaning additives when the bilges are extremely dirtyB. when the main condenser becomes fouled, in order to provide additional coolingwater circulationC. to connect the rose box to the independent bilge suctionD. if the bilges become flooded and they can not be emptied by any other means1614. A centrifugal bilge pump requires priming _.A. primarily to lubricate the shaft sealsB. due to the inability of this type of pump to lift water to cover the suction (eye) ofthe impellerC. to initially unload the pump by having its head pressure equal to discharge pressureD. in order to overcome the potential energy of water in the discharge line1615. The ability of an oil to separate cleanly from an oil and water mixture isreferred to as its _.A. precipitation number B. neutralization C. pour point D. demulsibility1616. The bilge system has been performing well; however, the aft starboardengine room bilge well suddenly fails to be pumped out. Which of the followingshould be done first to determine the cause?A. Open the bilge pump for inspection. B. Remove each of the manifold valves.C. Remove only the manifold valve to the affected bilge-well.D. Attempt to pump out another bilge well to determine if the entire system is affected.1617. Which pump installation would require an external source of sealing water?A. Main circulator pump jacket water cooling. B. Salt water service pump.C. Auxiliary condensate pump. D. Bilge pump.1618. One of the consequences in continuing to operate a centrifugal bilge pumpwith the discharge valve closed, is that the _.A. motor overload will open B. relief valve will open C. pump will overheat D. motor will overheat1619. If an operating bilge pump is developing good vacuum, but is unable todischarge any water, which of the following problems is the most probable cause?A. The wearing rings are excessively worn. B. The suction strainer is clogged.C. The discharge valve is clogged. D. The shaft is worn.1620. If a bilge pump is able to develop vacuum, but is unable to sufficiently pumpout the bilges, you would check for all of the following EXCEPT_.A. the circuit breaker B. for leaks in the suction pipingC. relief valve .is not properly seated D. the suction strainer1621. An independent bilge suction is required for _.A. ballast tanks B. sludge tanks C. machinery space bilges D. cargo hold bilges1622. If a centrifugal bilge pump were continually operated with the dischargevalve closed the _.A. motor overload would open B. relief valve would openC. pump would eventually overheat D. motor would overheat1623. To thoroughly pump out the bilges using a horizontally mounted centrifugalpump, the _.A. pump must always be primedB. volute must impart a radial and rotary motion of the water suction sideC. connection must guide the liquid to the lantern ringsD. stuffing box should not be allowed any water leakage1624. Bilges may be pumped _.A. on the outgoing tide B. overboard after dark C. overboard through an oily water separatorD. anytime in an emergency, i.e. main engine lube oil failure 1625. If it becomes necessary to pump bilges while a vessel is in port, which of the following procedures should be followed?A. Pump only if the discharge is led to a shore tank or barge.B. Pump only during the hours of darkness.C. Pump only on the outgoing tide. D. Pump only as much as is necessary.1626. A new ocean going ship of 2000 gross tons having an inoperative oily waterseparator may dispose of its bilge slops by _.A. holding its slops onboard until they can be pumped into the city sewer systemB. circulating them through the lube oil purifier to remove water and debrisC. holding its slops onboard until they can be discharged to a shore side reception facilityD. pumping them into a settling tank for separation before pumping the oily waterresidue overboard1627. An oceangoing ship of 400 gross tons and above must be fitted with a standard discharge shore connection. What is the size of the bolt circle diameter of the shore connection required to transfer oily ballast to a shore side reception facility?A. 125 mm B. 183 mm C. 215 mm D. It depends on outside pipe diameter.1628. Which of the following liquids can ordinarily be discharged overboardwithout being processed through an oily water separator?A. Cargo tank ballast. B. Segregated ballast. C. Engine room bilges. D. Cargo pump room bilges.1629. The minimum number and capacity of bilge pumps and fire pumps and theirdispersement within the ship is governed by _.A. Classification Society Rules B. National requirementsC. The IMO International Convention for the Safety of Life at Sea D. All of the above1630. The principle of separation by which all commercially available oily waterseparators function is _ differential between oil and water.A. the temperature B. the viscosity C. the gravity D. the size1631. The resistance to the movement of the globule in oily water mixture dependson its size and the _ of the fluid.A. pressure B. velocity C. gravity D. viscosity1632. Placing a filter on the _ of an oily water separator will polish thedischarge but overloading must be avoided.A. suction side B. discharge side C. by-pass pipe D. sampling pipe1633. The most suitable pump for oily water separator feed duties is_.A. a reciprocating pump B. a vane pump C. a centrifugal pump D. a triple screw pump1634. To assist separation of low viscosity oils steam coils or electric heaters arefitted _ of the oily water separator.A. in entrance B. in exit C. in the upper part D. on the outside1635. Which one of the following is not generally recognized as one constitute of bilge water? _.A. Oil leaking from tanks inside engine room B. Engine room cleaning waterC. Water leaking from the separator sludge tank D. Sewage water1636. When bilge water is heated in a holding tank, which one of the following statements is not accurate? _.A. The high temperature facilitates primary gravity separationB. Most of the oil and organic solvents are raised to the top layerC. The high the temperature is, the more the top oil will be collectedD. The high temperature has little use on the separation of emulsified oil1637. When discharging bilge water, which criteria must be observed? _.A. The requirement for the oil content of bilge water discharged is 15 ppmB. No discharge in sensitive waters C. Any disch