Hyundai Heavy Industries Interview Questions, Process, and Tips

Ohm's law is used to calculate the relationship between voltage, current, and resistance in an electrical circuit.

• Ohm's law states that the current through a conductor between two points is directly proportional to the voltage across the two points.

• The formula for Ohm's law is V = IR, where V is voltage, I is current, and R is resistance.

• Ohm's law is used in electrical engineering to design and analyze circuits, and to...read more

Current and voltage vary at different circuits depending on the load and resistance.

• Current and voltage are directly proportional to each other according to Ohm's Law.

• The current and voltage can be measured using a multimeter.

• The current and voltage can be affected by the type of circuit, load, and resistance.

• In AC circuits, the current and voltage can be out of phase with each other.

• In DC circuits, the current and vol

There are several types of boilers available, including fire-tube, water-tube, electric, and biomass boilers.

• Fire-tube boilers use hot gases produced by the combustion process to heat water inside tubes

• Water-tube boilers use water inside tubes to absorb heat from hot gases produced by the combustion process

• Electric boilers use electricity to heat water or produce steam

• Biomass boilers use organic materials like wood chi

Lp dosing and HP dosing are methods of adding chemicals to water for treatment purposes.

• Lp dosing refers to low-pressure dosing, which is used to add chemicals to water at a low pressure.

• HP dosing refers to high-pressure dosing, which is used to add chemicals to water at a high pressure.

• These methods are used to add chemicals such as chlorine, coagulants, and flocculants to water for treatment purposes.

• Lp dosing is com...read more

Economicser is not a known term. There is no clear answer to this question.

• There is no known term or concept called 'economicser'

• It is possible that the interviewer misspoke or meant to ask a different question

• Without further context, it is difficult to provide a more specific answer

If water quality is bad, it can lead to equipment damage, reduced efficiency, and safety hazards.

• Bad water quality can cause scaling and corrosion in equipment, leading to damage and reduced efficiency.

• It can also cause safety hazards, such as explosions or fires.

• Regular water quality testing and treatment is necessary to prevent these issues.

• Examples of bad water quality include high levels of minerals, bacteria, or c...read more

The turbine converts steam energy into mechanical energy to generate electricity.

• Steam enters the turbine and rotates the blades

• The rotating blades turn the shaft connected to the generator

• The generator converts the mechanical energy into electrical energy

• The steam exits the turbine and is condensed back into water

1 ton steam can generate approximately 2.5 MW of power.

• The exact amount of power generated depends on the efficiency of the generator.

• 1 ton of steam is equivalent to 1 boiler horsepower or 35,000 BTU/hour.

• MW stands for megawatt, which is equal to one million watts.

• The conversion factor for steam to MW is 1:2.5.

• Therefore, 1 ton of steam can generate approximately 2.5 MW of power.

Maintaining pressure and DP in H2 gas in Generator

• H2 gas is used as a cooling medium in Generator

• Maintaining pressure ensures proper cooling and prevents overheating

• If pressure is not maintained, it can lead to overheating and damage to the Generator

• DP (Differential Pressure) is maintained to ensure proper flow of H2 gas

• If DP is not maintained, it can lead to blockages and reduced cooling efficiency

If the boiler feed pump fails, it will affect the steam generation process. The operator should take immediate action to prevent further damage.

• The steam generation process will be affected

• The operator should immediately shut down the boiler

• Check the pump for any faults or damages

• Replace or repair the pump as soon as possible

• Ensure that the water level in the boiler is maintained

• Monitor the system closely to prevent an

Maintaining drum level is crucial for safe and efficient operation of the CCR. It helps to prevent damage to the equipment and ensure quality of the product.

• Maintaining drum level helps to prevent damage to the equipment and ensure quality of the product

• Drum level can be maintained by adjusting the feed rate, adjusting the steam flow rate, and monitoring the level using instruments

• If the drum level is too high, it can ...read more

Low or high boiler drum level can cause damage to the boiler and affect its efficiency.

• Low level can cause overheating and damage to the boiler tubes.

• High level can cause water carryover into the steam lines, affecting the quality of steam and damaging equipment.

• Both situations can lead to reduced efficiency and increased maintenance costs.

• Continuous monitoring and control of the drum level is essential to prevent thes

Turbine rotates due to the force of steam or gas pushing against the blades.

• Turbine blades are designed to capture the energy of the steam or gas.

• The steam or gas enters the turbine at high pressure and high velocity.

• As the steam or gas flows over the blades, it causes them to rotate.

• The rotation of the turbine is used to generate electricity or power machinery.

• Turbines can be found in power plants, jet engines, and ot

The amount of steam required for 1 MW generation depends on the efficiency of the power plant.

• The efficiency of the power plant determines the amount of steam required for 1 MW generation

• The type of fuel used also affects the amount of steam required

• On average, a coal-fired power plant requires about 3.5 tons of steam per MW generated

• A natural gas-fired power plant requires about 1.5 tons of steam per MW generated

Maintaining water and steam quality is crucial for safe and efficient operation of the plant.

• Water quality affects the efficiency of heat transfer and can cause corrosion and scaling in the system.

• Steam quality affects the performance of turbines and can cause erosion and damage to the blades.

• Poor water and steam quality can also lead to safety hazards such as explosions and leaks.

• Regular monitoring and treatment of wa...read more

Extraction is the process of obtaining a substance or component from a mixture or solution for a specific purpose.

• Extraction involves separating a desired substance from a mixture or solution using various methods such as filtration, distillation, or chromatography.

• The purpose of extraction can vary depending on the industry or application. For example, in the pharmaceutical industry, extraction is used to isolate acti...read more

DM water is demineralized water that has had all of its minerals and salts removed through a process of ion exchange or distillation.

• DM water is used in various industrial processes such as power generation, pharmaceuticals, and electronics manufacturing.

• It is also used in laboratories for experiments and testing.

• DM water is highly pure and has a very low conductivity.

• It is produced through processes such as ion exchan...read more

DM water is demineralized water that has had its mineral ions removed.

• DM water has a low conductivity due to the absence of mineral ions.

• It is used in industries such as power plants, pharmaceuticals, and electronics.

• DM water is produced through processes such as reverse osmosis and ion exchange.

• It is also known as deionized water or distilled water.

• DM water is used in various applications such as cooling systems, labo

I have experience with both natural gas and coal-fired boilers, as well as steam and gas turbines.

• Experience with natural gas and coal-fired boilers

• Experience with steam and gas turbines

• Familiarity with boiler and turbine controls and instrumentation

• Knowledge of safety protocols and emergency procedures

• Experience with maintenance and troubleshooting

• Ability to read and interpret technical manuals and schematics

Boiler trip can cause power outage and damage to the equipment.

• Boiler trip can cause sudden loss of power.

• It can damage the equipment and cause downtime.

• The cause of the trip needs to be identified and rectified.

• Proper safety measures should be taken to prevent such incidents.

• Examples of causes include low water level, high pressure, flame failure, etc.

If turbine trips, power generation will stop and the plant will shut down.

• Turbine trip can be caused by various factors such as low oil pressure, high vibration, or overspeed.

• The control system will initiate an emergency shutdown to prevent damage to the turbine.

• Operators will need to investigate the cause of the trip and take corrective actions before restarting the turbine.

• Regular maintenance and monitoring can help ...read more

Safety valves in boilers and turbines are used to prevent overpressure and ensure safe operation.

• Safety valves are designed to open automatically when the pressure inside the boiler or turbine exceeds a certain limit.

• Their purpose is to prevent overpressure and ensure safe operation of the equipment.

• There are different types of safety valves, including spring-loaded, lever, and pilot-operated valves.

• Spring-loaded valve...read more

If boiler fuel fails, the boiler will stop working and there will be no steam generation.

• Boiler fuel is essential for generating steam in the boiler.

• Without fuel, the boiler will not be able to produce steam.

• This can lead to a shutdown of the entire plant or facility.

• Immediate action must be taken to restore fuel supply or switch to an alternative fuel source.

Economizer temperature is maintained to improve boiler efficiency and reduce fuel consumption.

• Maintaining economizer temperature helps in preheating the feedwater before it enters the boiler.

• This reduces the amount of fuel required to heat the water and improves the overall efficiency of the boiler.

• If the economizer temperature is not maintained, the feedwater will enter the boiler at a lower temperature, which will re...read more

Scale formation in turbine is the deposition of mineral deposits on the turbine blades.

• Scale formation occurs due to the presence of minerals in the water used in the turbine.

• It can cause reduced efficiency and damage to the turbine blades.

• Common minerals that cause scale formation include calcium, magnesium, and silica.

• Regular cleaning and maintenance can prevent scale formation in turbines.

Turbine will trip when there is a fault in the system or when the safety parameters are exceeded.

• Turbine trips when there is a sudden drop in steam pressure.

• Turbine trips when there is a sudden increase in steam temperature.

• Turbine trips when there is a sudden increase in vibration levels.

• Turbine trips when there is a fault in the control system.

• Turbine trips when the safety parameters are exceeded, such as high pressu...read more

Maintaining MS temperature in Ms line, turbine inlet, and boiler outlet is crucial for efficient operation.

• MS temperature in Ms line should be maintained between 250-300°C to prevent corrosion and ensure efficient operation.

• Turbine inlet temperature should be maintained between 540-565°C to ensure maximum efficiency and prevent damage to the turbine.

• Boiler outlet temperature should be maintained between 540-565°C to en...read more

Exhaust pressure and temperature must be maintained to ensure efficient operation of the CCR.

• Maintaining proper exhaust pressure and temperature ensures efficient operation of the CCR.

• Exhaust pressure and temperature can be affected by factors such as feed rate, catalyst activity, and reactor temperature.

• If exhaust pressure and temperature are not maintained, it can lead to reduced conversion efficiency and increased e...read more

Identifying problems in boiler or turbine requires thorough observation and analysis.

• Regular monitoring of equipment performance

• Analyzing data from sensors and gauges

• Checking for unusual sounds or vibrations

• Inspecting for leaks or damage

• Consulting with maintenance team or manufacturer

• Performing diagnostic tests

• Following safety protocols

• Documenting findings and reporting to supervisor

Maintaining vacuum in exhaust helps in removing unwanted gases and particles from the system.

• Vacuum in exhaust helps in removing unwanted gases and particles from the system.

• It prevents the accumulation of harmful gases in the system.

• It helps in maintaining the efficiency of the system.

• It also prevents the system from overheating.

• Examples include vacuum systems in chemical plants, power plants, and industrial processes

Maintaining proper MS temperature and pressure is crucial for efficient operation.

• Maintaining proper temperature and pressure ensures optimal performance of the equipment.

• Incorrect temperature and pressure can lead to equipment failure and safety hazards.

• Proper maintenance of MS temperature and pressure can also extend the lifespan of the equipment.

• Regular monitoring and adjustment of temperature and pressure is necess...read more

Efficiency of boiler and turbine can be increased by optimizing fuel usage, improving insulation, and regular maintenance.

• Optimize fuel usage by monitoring and adjusting combustion parameters

• Improve insulation to reduce heat loss and increase energy efficiency

• Regular maintenance of equipment to ensure optimal performance

• Use of advanced control systems to optimize operations

• Upgrade to more efficient equipment and techno...read more

Turbine bearing vibration rises due to misalignment, unbalance, or wear and tear.

• Misalignment of the shaft and bearings can cause vibration.

• Unbalance of the rotor can cause vibration.

• Wear and tear of the bearings can cause vibration.

• Vibration can lead to damage of the bearings and other components.

• Regular maintenance and monitoring can prevent excessive vibration.

Lube oil temperature and pressure are maintained for optimal equipment performance and longevity.

• Maintaining proper lube oil temperature and pressure ensures that the equipment operates efficiently and effectively.

• High temperatures can cause the oil to break down and lose its lubricating properties, leading to increased wear and tear on the equipment.

• Low temperatures can cause the oil to thicken and become less effecti...read more

Turbine glands prevent steam leakage from the turbine casing.

• Turbine glands are used to seal the shaft of the turbine where it exits the casing.

• They prevent steam from leaking out of the casing.

• The glands are made up of packing rings that are compressed against the shaft by a gland follower.

• The gland follower is tightened to maintain the correct compression of the packing rings.

• If the gland is not properly maintained, ...read more

Balancing gland is a device used in rotary kilns to prevent air leakage.

• It is a sealing device used in rotary kilns.

• It prevents air leakage and maintains pressure inside the kiln.

• It consists of a set of rotating blades that scrape off excess material from the kiln wall.

• The scraped material is then collected in a hopper and removed from the kiln.

• It helps to maintain the temperature and pressure inside the kiln, which is

A balancing piston is a device used to balance the pressure in a hydraulic system.

• It is a piston that is used to balance the pressure in a hydraulic system.

• It is typically used in reciprocating pumps and compressors.

• The piston moves in response to changes in pressure, helping to maintain a consistent pressure throughout the system.

• It helps to reduce wear and tear on the system and improve efficiency.

• Examples of applica...read more

Gland steam pressure and temperature are maintained to prevent leakage and ensure proper sealing of the turbine shaft.

• Maintaining gland steam pressure and temperature prevents leakage of steam from the turbine shaft

• Proper sealing of the turbine shaft is ensured by maintaining gland steam pressure and temperature

• Gland steam pressure and temperature also help in reducing friction and wear on the turbine shaft

• Examples of ...read more

The turbine will convert the energy from steam into mechanical energy.

• Steam will enter the turbine and cause the blades to rotate

• The rotation of the blades will generate mechanical energy

• The mechanical energy will be used to turn a generator and produce electricity

Exentrysity is not a recognized term in the field of CCR operation.

• Exentrysity is not a term used in CCR operation.

• It is important to maintain proper terminology and understanding of the field.

• There may be other terms or concepts related to CCR operation that are important to maintain.

• Examples of important concepts in CCR operation include safety protocols, equipment maintenance, and emergency procedures.

Drum safety valve and MS safety are provided for safety reasons.

• Drum safety valve is provided to prevent overpressure in the drum and protect the equipment from damage.

• MS safety is provided to prevent overpressure in the main steam line and protect the boiler from damage.

• Both safety valves are essential for safe and efficient operation of the boiler.

• They are designed to open automatically when the pressure exceeds the ...read more

High or low boiler draft affects combustion efficiency and safety. Maintaining proper draft is crucial.

• High draft can cause excessive air intake, leading to incomplete combustion and wasted fuel.

• Low draft can cause incomplete combustion and the release of dangerous gases like carbon monoxide.

• Maintaining proper draft ensures efficient combustion and safe operation of the boiler.

• Draft can be controlled by adjusting the d...read more

Wind box is a part of the preheater section in cement plants that supplies hot air to the kiln for combustion.

• It is located between the preheater cyclones and the kiln inlet.

• It is responsible for providing hot air to the kiln for fuel combustion.

• The temperature of the air supplied by the wind box is typically around 900-1000°C.

• The wind box is equipped with dampers to control the flow of air to the kiln.

• It is an importa...read more

I would immediately notify the maintenance team and follow the standard operating procedures for handling such situations.

• Notify maintenance team

• Follow standard operating procedures

• Ensure safety protocols are followed

• Document the incident for future reference

Possible problems in CCR operation

• Equipment malfunction

• Power outage

• Human error

• System overload

• Communication breakdown

Fuel composition needs to be periodically checked to ensure efficient and safe operation of the CCR.

• Fuel composition affects the efficiency of the CCR.

• Changes in fuel composition can lead to safety hazards.

• Regular checks can prevent equipment damage and downtime.

• Fuel composition can be affected by factors such as temperature and humidity.

• Examples of fuel composition checks include measuring the levels of sulfur, nitrog

Turbine trip can cause a sudden drop in pressure, leading to loss of vacuum in the condenser.

• Turbine trip causes sudden drop in pressure

• Loss of pressure leads to loss of vacuum in condenser

• Vacuum is required for efficient condensation of steam

• Loss of vacuum can lead to reduced efficiency and power output

• Proper procedures must be followed to restore vacuum after turbine trip

Disk gravity in gas turbine is the force that holds the turbine blades in place and prevents them from flying off.

• Disk gravity is a crucial factor in the safe and efficient operation of gas turbines.

• It is the force that keeps the turbine blades in place and prevents them from being thrown off by the centrifugal force generated by the spinning rotor.

• Disk gravity is affected by the size and weight of the turbine blades, ...read more

The 1st stage blade is used to convert thermal energy into mechanical energy.

• The 1st stage blade is a component of a gas turbine.

• It is responsible for converting thermal energy into mechanical energy.

• It is the first set of blades that the hot gases encounter in the turbine.

• The blade is designed to withstand high temperatures and pressures.

• The blade is typically made of high-strength materials such as nickel-based alloy...read more

Heat rate is the amount of energy required to generate one unit of electricity.

• Heat rate is calculated by dividing the total energy input to a power plant by the electricity output.

• It is measured in British thermal units (BTUs) per kilowatt-hour (kWh).

• A lower heat rate indicates a more efficient power plant.

• Factors that affect heat rate include the type of fuel used, the age and condition of the plant, and the operatin...read more

A turbine is a machine that converts the energy from a fluid into mechanical energy.

• Turbines are used in power plants to generate electricity.

• They work by using the energy from steam, water, or gas to turn a rotor.

• The rotor is connected to a shaft, which drives a generator to produce electricity.

• Turbines can be classified into different types based on their design and application, such as steam turbines, gas turbines, ...read more

Excitation is the process of activating or stimulating a system or component.

• Excitation is used in various fields such as electrical engineering, neuroscience, and physiology.

• In electrical engineering, excitation is used to generate an electromagnetic field in a generator or motor to produce power.

• In neuroscience, excitation refers to the process of stimulating neurons to generate action potentials.

• In physiology, excit...read more

Startup and shutdown are the processes of starting and stopping a plant's operations. It is done by following specific procedures.

• Startup involves checking equipment, verifying settings, and gradually increasing production.

• Shutdown involves gradually reducing production, cleaning equipment, and securing the plant.

• Both processes require following specific procedures to ensure safety and efficiency.

• Startup and shutdown p...read more