Find Interview Questions for Top Companies
Ques:- What are the Safety measures in central chiller plant? Explain them?
Asked In :- british steel,
Right Answer:
1. **Personal Protective Equipment (PPE)**: Ensure all personnel wear appropriate PPE such as gloves, goggles, and hard hats.

2. **Lockout/Tagout (LOTO)**: Implement LOTO procedures to ensure equipment is properly shut off and not able to be started up again before maintenance work is completed.

3. **Regular Inspections**: Conduct routine inspections of equipment and safety systems to identify and address potential hazards.

4. **Emergency Shutdown Procedures**: Establish clear emergency shutdown procedures and ensure all staff are trained on them.

5. **Ventilation**: Maintain proper ventilation in the chiller plant to prevent the buildup of harmful gases and ensure air quality.

6. **Chemical Handling**: Follow safety protocols for handling refrigerants and other chemicals, including proper storage and spill response procedures.

7. **Fire Safety**: Install and maintain fire suppression systems and ensure access to fire extinguishers.

8. **Training and Awareness**: Provide regular safety training for all employees
Ques:- What are the plant parametres?
Asked In :- Skanska UK, a.g. coombs,
Right Answer:
Plant parameters refer to the key metrics and conditions that are monitored to ensure optimal operation and maintenance of a facility. These typically include:

1. Temperature
2. Pressure
3. Humidity
4. Flow rates
5. Equipment performance metrics
6. Energy consumption
7. Vibration levels
8. Chemical concentrations
9. Maintenance schedules
10. Safety compliance indicators
Ques:- What is HVAC?
Asked In :-
Right Answer:
HVAC stands for Heating, Ventilation, and Air Conditioning. It refers to the technology used to control the indoor climate of buildings by regulating temperature, humidity, and air quality.
Ques:- What is the difference between fermentor and bioreactor?
Asked In :- SEAT, ferchau engineering,
Right Answer:
A fermentor is specifically designed for fermentation processes, primarily for growing microorganisms to produce products like alcohol or antibiotics. A bioreactor, on the other hand, is a broader term that refers to any vessel where biological reactions occur, including fermentation, cell culture, and other processes involving living cells or enzymes.
Ques:- What are types of central ac plants?
Asked In :-
Right Answer:
The types of central AC plants include:

1. Chilled Water Systems
2. Direct Expansion (DX) Systems
3. Absorption Chillers
4. Air-Cooled Chillers
5. Water-Cooled Chillers
6. Variable Refrigerant Flow (VRF) Systems
Ques:- Why should we have to maintain excess air in furnaces andboilers while burning any fuel?
Asked In :- sydney trains,
Right Answer:
Maintaining excess air in furnaces and boilers ensures complete combustion of the fuel, reduces the formation of harmful emissions like carbon monoxide, and helps prevent soot buildup, which can improve efficiency and safety.
Ques:- How to generate steam?
Asked In :-
Right Answer:

Steam is generated by heating water in a closed container (called a boiler) until it boils and turns into vapor. This is usually done using fuels like coal, gas, oil, or electricity.

Ques:- DCS architecture of your plant?
Asked In :- Cadmaxx Solutions,
Right Answer:
The DCS (Distributed Control System) architecture of our plant consists of a centralized control room with multiple operator stations connected to field devices through communication networks. It includes redundant controllers for reliability, I/O modules for data acquisition, and a human-machine interface (HMI) for monitoring and control. The system is designed to ensure real-time data processing and control of various processes across the plant.
Ques:- How much steam is produced from 1 kg of coal?
Asked In :-
Right Answer:

On average, 1 kg of coal produces around 5 to 6.5 kg of steam, depending on the coal quality and boiler efficiency.


Ques:- Maintenace management of electrical systems in petrochemicals plant
Asked In :-
Right Answer:
Maintenance management of electrical systems in a petrochemicals plant involves regular inspections, preventive maintenance, troubleshooting, and repairs to ensure reliability and safety. It includes monitoring equipment performance, adhering to safety regulations, maintaining documentation, and implementing a maintenance schedule to minimize downtime and optimize efficiency.
Ques:- Handling of manpwer and demostration and working procedure
Asked In :-
Right Answer:
To handle manpower effectively, ensure clear communication of roles and responsibilities, provide proper training, and establish a structured work schedule. Demonstrate the working procedure through hands-on training sessions, visual aids, and regular feedback to ensure understanding and compliance with safety and operational standards.
Ques:- Plant maintenance work in steel sector
Asked In :-
Right Answer:
Plant maintenance work in the steel sector involves regular inspections, repairs, and servicing of machinery and equipment to ensure optimal performance and safety. This includes preventive maintenance, predictive maintenance, and corrective maintenance of furnaces, rolling mills, conveyors, and other critical systems to minimize downtime and enhance production efficiency.
Ques:- Thermal power plant
Asked In :-
Right Answer:
A thermal power plant generates electricity by using heat energy, typically from burning fossil fuels like coal, natural gas, or oil. The heat produces steam that drives a turbine connected to a generator, converting thermal energy into electrical energy.
Ques:- Describe the man and machine ratio for operation and maintenance at site?
Asked In :-
Right Answer:
The man and machine ratio for operation and maintenance at a site typically ranges from 1:1 to 1:3, depending on the complexity of the machinery and the operational requirements. This means for every machine, there is one to three personnel assigned for effective operation and maintenance.
Ques:- What are your plans to reduce the maintenance cost at site?
Asked In :-
Right Answer:
To reduce maintenance costs at the site, I plan to implement a proactive maintenance strategy, conduct regular training for staff, invest in predictive maintenance technologies, optimize inventory management for spare parts, and establish a thorough review process for maintenance tasks to identify and eliminate inefficiencies.
Ques:- What is Preventive Maintenence?
Asked In :-
Right Answer:
Preventive maintenance is a proactive approach to maintenance that involves regularly scheduled inspections, servicing, and repairs of equipment and facilities to prevent unexpected failures and extend their lifespan.


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