Interview conducted for C/E&2/E candidate
1: What is the plant to ready for manoeuving and departure port?
*start the cond generator and after all checks, take it on load
*The third generator should be kept on standby condition
*Esntial steps to be noted: Turning engine indicator cocks parameters abnormal noi
*Check system FO rvice and ttling tanks diel oil rvice tank air system LO system T/C CW system checking the fuel regulating gear & starting system
* slow turning the engine
*this must be carried out to prevent damage caud by fluid in one of the cylinders and to check the reversing mechanism
阳光的英文*Before beginning the slow turning obtain permission from the bridge
2 what items to be analysis on lube oil?桑椹是什么
*Specific gravity viscosity flash point TAN(total acid number)SAN(strong acid number) alkalinity TBN( total ba number) water content Conradson carbon ash insoluble
3 what cau of exhaust temperature ris in all cylinders?
* Incread scavenge air temperature owing to inadequate air cooler function
*Fouled air and gas passages
*Inadequate fuel oil cleaning or alerted combustion characteristics of fuel
*wrong position of camshaft
4 what caus of high turbocharger speed?
*Fouled air filter(early stage of unloading the compressor)
*Fire (early stage) in the exhaust check immediately.
5 what caus of cylinder knocking?
*Fuel timing too far advanced
*fuel injector valve needle sticking at open position
*Excessive carbon built up on the crown
*Broken exhaust valve
*Mechanical damage in the3 cylinder
6 what action to be taken of crankca mist detector alarm (never cut out mist detector potentially dangerous)?
*Inform bridge and C/E
*Stay away from crankcas
*slowdown and stop
*start turning gear immediately for at least 30 minutes to cool down
*Through investigation of mist detector crankca abnormality and moving parts required
7 what caud of scavenge fire and action taken?
*Inform bridge and C/E
*Do not stand near the relief valves
*slow down engine ensure that the auxiliary blowers are off
*In ca the fire persists stop the engine gradually to prevent risk of piston izure
*Fire should be go off when all deposits burnt out
*keep turning the engine with cooling on to prevent izure of moving parts
8 what action taken when crankca explosion? (Most湖水像什么 of the cas engine will suddenly stop upon explosion)
*Inform bridge and chief engineer
*evacuate the E/R
*Every safe effort to be made to turn engine by turning gear or slow turning for 30 minutes to prevent izure of moving parts
*Thorough investigation癃清胶囊 required into the cau of the explosion before re starting
9 What will you do when boiler water level was low during normal steaming condition?
*Fist start the standby feed water pump
*Second check and wash the local water level gauge
*Third check any leakage on steam pipes or safety valves彩虹形成的原理
10 Turbo charger surging caus and preventive 左岸工社measures?
* T/C surging can be divided into three main categories
* malfunction in the fuel system
*Rapid variations in the engine load
* Fuel system fuel injection system fuel line components fuel timing
一句话学车的感悟
*exhaust system valve exhaust passage through turbocharger and gas boiler
*scavenge air system
*Miscellaneous rapid changes in load and RPM governor
*Immediate action temporarily counteracted by blowing off
Reduce engine load by taking the T/C away from the surging line
*Preventive measures regular maintenance of items mentioned above prevent load fluctuations during ballast voyage and bad weather
*Periodical check of M/E bedplate a strength member
* Cross girder under the bearing housing
*Bolt holes
* Holding down bolts of slackening
*Chocks (fretting cracks and slackness)
11 Turbo blower maintenance during operation and check to be made during maintenance
Important points for turbo charger maintenance
●Gas casing scaling and corrosion
●Water treatment is esntial
●Rotor unbalance due to improper cleaning of the air side as well as turbine side wheels
●Air side impeller usually have a film of oil on the aluminum surface
●Gas side in rvice cleaning necessary to prevent deposits from combustion products
●Improper cleaning of air side or turbine side could result in rotor unbalance and subquent operational problems
