Power Plant Steam (Final Exam)
Based on Kongsberg ERS Exercise on the operation of a Steam Boiler: When Steam Drum temperature is 105 degrees centigrade what will be the next step you should do?
Open the atomizing air valves
Shut boiler vent valve and superheated steam line vent valve
Fully open the main shut off valve
Open boiler vent valve and superheated steam line vent valve
MD86; The Turbo generator should start to roll slowly. Let the turbine rotate for how many minutes at 15 percent speed?
4 minutes
3 minutes
2 minutes
5 minutes
The speed can be remotely adjusted by lower/raise signals from the electric switch board, or the manual set-point adjustment at the throttle valve
None required adjustment
Automatic adjustment
Throttle adjustment
Manual set-point adjustment
Based on Kongsberg ERS Exercise on the operation of a Steam Boiler, Set the four controllers to the manual, the master at 7, the fuel flow and oxygen controllers at?
4
10
100
7
On ERS exercise on the Operation of a Steam Boiler: Decrease the airflow controller to 10 and decrease the fuel controller to Allowing the burner to fire continuously.
10
100
4
7
In monitoring the deviation of normal operating conditions, what is the ideal boiler water level?
Between-10 to 10 mm
Between -50 to 50 mm
Between -150 to 150 mm
Between -15 to 15 mm
There is a ____________fitted for cleaning purposes which uses air as the operating medium from the service air system
Expansion valve
Refractory
Release valve
Sootblower
It is important that the turbine is started slowly. This is to reduce during start up.
Thermal shock
Thermal tension
Thermal issue
Thermal stress
The turbine is modelled realistically with torque dependent on steam flow, inlet steam pressure/temperature and condenser vacuum. The is controlled by a speed governor
Throttle valve
Exhaust valve
Expansion valve
Inlet valve
To stop the turbo alternator because of malfunction, Slowly close the emergency stop valve to 20% open for how many minutes in order to remove instability within the steam supply system?
Over 1 minute
Over 2 minutes
You can close immediately
Over 3 minutes
The Turbo generator is modelled with engine driven the Turbo alternator via a fresh water cooled cooler as well as an electric pump drawing from a LO tank and discharging to ☑
LO pump
Axial pump
Gear pump
FO pump
What is the mimic diagram when you are going to open V00367 (DO to boiler), V00327 (HO to Boiler) and V00328 (HO Service Tank shutoff valve)
MD 82
MD 80
MD 84
MD 05
Based on Kongsberg ERS Exercise on the operation of a Steam Boiler: The Aux Boiler have started Boiler Air Fan, set the four controller to manual. The master controller must be set to?
7
10
100
4
The turbo-generator is fed with ______ steam from the exhaust boiler
Wet
De-superheated
Superheated
Dry
What is the mimic diagram when steam drum temp 1050 C (drum pressure over= 0.23bar) shut Boiler Vent Valve (V05103) & Super heated steam line vent valve (V5008)?
MD 82
MD 05
MD 80
MD 84
What is the ideal Exhaust boiler water circulating flow?
Greater than 60 ton/hour
Greater than 30 ton/hour
Greater than 130 ton/hour
Greater than 160 ton/hour
To stop the turbo alternator, After the turbo-alternator has cooled down and leave for 10 minutes, what will be your next step to be done?
Close the bypass valve
Open steam line drain valve
Open sealing steam valve
Close the emergency stop valve
What is the mimic diagram when you are told to open seawater to steam condenser?
MD 01
MD 70
MD 85
MD 86
What is the ideal feedwater tank level of the exhaust boiler on ERS? Time
Between 1.0 to 2.75 m
Between 0.1 to 2.75 m
Between 0.1 to 02 m
Between 1.0 to 2.0 m
What is the mimic diagram when you are going to change the air flow should be set at 100 and the purge cycle initiated. When the purge cycle is complete (the purge indication releases) change the air flow controller value to 10?
MD 05
MD 84
MD 80
MD 82
If the turbo-generator is started with much water present in the steam line, turbine rotor, and is indicated by a turbine trip. Will occur. This can severely damage
Water strike
Water brake
Steam brake
Steam strike
What is the mimic diagram when you are instructed to engage the turning gear for about 1 minute. On disconnection reset the turbine trip?
MD 85
MD 01
MD 70
MD 86
What is the mimic diagram when you want to ensure that the turbo alternator is not supplying electrical load. If so open the circuit breaker using the procedure within the electrical section?
MD 71
MD 84
MD 86
MD 70
What is the alarm activated during your exercise on the operation of an EGB steam turbine/turbo generator?
TG sealing steam controller failure
TG steam supply low pressure failure
TG ESV failure
TG LO pressure failure
What is the ideal Steam temp outlet for Exhaust Boiler superheater?
Less than 35 degC
Less than 50 degC
Less than 350 degC
Less than 300 degC
The exhaust fired boiler produces steam of 9 bar and superheated to?
Approx. 340°C
Approx. 440°C
Approx. 140°C
Approx. 240°C
Water ingress into the lubricating oil sump is modelled. Hence the turbo-generator lube oil tank should be drained off regularly and new oil added. Very low/high lube oil temperature or very high water content will reduce the lubrication ability of the oil and cause rotor instability and possible turbine trip What trip is this?
Low lube oil pressure trip
High boiler water level trip
High vibration trip
Turbo-generator overspeed trip
MD86, Open the turbo generator emergency stop valve to how many percent?
35%
15%
25%
5%
What is the ideal feedwater tank temperature of the exhaust boiler on ERS?
Between 15 to 18 degC
Between 30 to 80 degC
Between 150 to 180 degC
Between 50 to 80 degC
On ERS exercise on the Operation of a Steam Boiler: Check the boiler water level is within normal working limits, what should you do if you observed during watchkeeping that the level of water is not in the normal level?
Be cautious for an explosion will come up soon.
Don't worry it is only normal
Refill if necessary
No action needed, because it is running in AUTO mode.
It is the lower bank of tubes section where the saturated steam from the oil fired boiler passes in via the upper header of the bank and counter to the gas flow to out of the lower header to the turbo-alternator, cargo pumps and ballast pump.
Economizer
Superheater
Evaporator
Condenser
What is the mimic diagram when the level in the steam drum drops below-10, open Boiler Main feed valve (V04807), put Feed controller in MAN and start the Main feed pump (R05630). Adjust the MAN output το 10%?
MD 80
MD 82
MD 05
MD 84
Based on Kongsberg ERS Exercise: before the gradual opening of the main shut off valve, what procedure is first action in order to remove moisture present on the steam line?
Open the vent valve first
Open the relief valve first
Crack-open the steam dump valve first
Open the steam line drain valve first
What is the mimic diagram when you are going to reset the boiler Trip - Burner management "ready" light should illuminate, so now switch it on?
MD 82
MD 84
MD 85
MD 05
What is the mimic diagram when the level in the steam drum drops below-10, open Boiler Main feed valve (V04807), put Feed controller in MAN and start the Main feed pump (R05630). Adjust the MAN output το 10%?
MD 84
MD 05
MD 82
MD 80
It is the top bank of tubes section where the feedwater passes through the tubes counter to the gas flow in an Exhaust
Evaporator
Superheater
Condenser
Economiser
MD86, Continue to open the valve very slowly, up to 40% over for how many minutes?
15 minutes
5 minutes
10 minutes
8 minutes
What is the allowable pressure before you can start a turbo generator?
7 bar
4 bar
6 bar
5 bar
What is the mimic diagram if you are going to raise the water level to + 75 and stop the pump. Monitor the water level and repeat this operation as necessary when the level drops below - 75?
MD 84
MD 82
MD 05
MD 80
What is the ideal Exhaust temperature after boiler (inlet stack)?
Less than 400 degC
Less than 450 degC
Less than 300 degC
Less than 350 degC
What is the mimic diagram when the main steam line pressure rises to 1.0, shut steam line drain (V05378)?
MD 82
MD 84
MD 80
MD 05
MD86, Check the level and water content of the turbo generator. What will you do when you see this Z.50?
Drain the fuel
Drain the lube oil
No action needed
Drain the water
MD86, What is the speed of the turbo generator when the emergency stop valve should be opened to 100% and steam line drain will be closed closed?
6100 rev/min
6400 rev/min
6000 rev/min
6200 rev/min
What is the mimic diagram when you are going check the boiler water level is within normal working limits?
MD 84
MD 80
MD 82
MD 05
When the level in the steam drum drops below -10, open Boiler Main feed valve, put Feed controller in MAN and start the Main feed pump Adjust the MAN output to ____?
10%
5%
3%
15%
On ERS exercise on the Operation of a Steam Boiler. The airflow should be set at 100 and the purge cycle initiated. When the purge cycle is complete the airflow controller value to?
10
7
4
100
What is the mimic diagram when you are instructed to start Main Condensate pump and No 1mvacuum pump?
MD 85
MD 86
MD 70
MD 71
Before start of cold turbo-generator the main steam line and turbine casing must be____ for water.
Drained
Filled
Flushed
Pressurized
When the turbo-generator is shut down, a gradual collection of ___ in the steam line/turbine casing is modelled.
Water
Oil
Steam
FO
MD86. Engage the tuming gear for about ____ On disconnection reset the turbine trip.
1 minute
3 minutes
2 minutes
5 minutes
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