更多"The ()is fitted on an oily water se"的相关试题:
[单项选择]After stopping oily water separator, sea water should be permitted for () minutes,()should be closed after stopping pump to reduce oxidation corrosion of inner wall.
A. 15;inlet value
B. 15;inlet and outlet value
C. 30;inlet value
D. 30;inlet and outlet value
[单项选择]Before the oily water separator put into operation, it should be ()
A. filled with bilge water
B. filled with oil
C. filled with clean water
D. be emptied
[单项选择]When started, a complete oily water separating unit is first filled ()The oily water mixture is then pumped through the inlet pipe into the coarse separating compartment.
A. with dirty water
B. with clean water
C. by oily water
D. by mixed water
[单项选择]When oily water separator is operating, which measure () is wrong.
A. pay attention to operating parameters
B. renew and clean separating units in time
C. check oil level in separator to prevent overload
D. check separating effect, if it is bad, flush with large capacity water pump
[单项选择]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 pump
[单项选择]What’s the advantage of oily water separator that meets the requirement of MEPC 60(33) over MEPC 107(49)?()
A. more economic
B. larger capacity on oil treatment
C. less costive
D. more capable of separating emulsified oil
[单项选择]Before the oily water is installed on board ships, it must have ()
A. IOPP
B. type approval certificate
C. cargo ship safety equipment certificate
D. cargo ship safety certificate
[单项选择]Oily water separator mis-alarms, the most possible reason is ()
A. separating oil too fast
B. the sensor flushed badly
C. the discharge solenoid value out of order
D. too low heating temperature
[单项选择]In an oily water separator the oil will travel () to the oil collecting spaces.
A. upwards
B. downwards
C. outwards
D. forwards
[单项选择]Here some oil in the oily water separator, as a result of its lower (), will separate and rise into the oil collection space.
A. temperature
B. viscosity
C. density
D. velocity
[单项选择]How many PPM of the oily water can be pumped out within 12 miles along the China coast line?().
A. at least 15 PPM
B. about 15 PPM
C. up to 15 PPM
D. no less than 15 PPM
[单项选择]Placing a filter on the () of an oily water separator will "polish" the discharge but overloading must be avoided.
A. suction side
B. discharge side
C. by-pass pipe
D. sampling pipe
[单项选择]What is a lighted safe water mark fitted with to aid in its identification().
A. A spherical topmark
B. Red and white retroreflective material
C. A sequential number
D. A red and white octagon
[单项选择]Accumulations of oily rags should be().
A. kept in nonmetal containers
B. discarded as soon as possible
C. cleaned thoroughly for reuse
D. kept in the paint locker
[单项选择]Which of the following pumps will most affect oily water separator performance and give the worst result?()
A. reciprocating pump
B. vane pump
C. screw pump
D. centrifugal pump
[单项选择]During inspection of oil and oily mixtures from machinery spaces, which of the following factors should be taken into account by the PSCO? ()
A. The quantity of oil residues generated
B. The capacity of sludge and bilge water holding tank
C. The capacity of the oily water separator
D. All of the above
[单项选择]The following measures can be used to improve oily water separator’s separating effect except ()
A. overhauling every two year
B. working at intervals
C. renewing filtration material
D. pumping bilge water from different layers respectively
[单项选择]Any discharge into the sea of oil or oily mixtures from ships to which this Annex of MARPOL 73/78 applies shall be()except when special conditions are satisfied.
A. required
B. requested
C. promoted
D. prohibited